1 | // All functions that need access to the editor's state live inside |
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2 | // the CodeMirror function. Below that, at the bottom of the file, |
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3 | // some utilities are defined. |
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4 | |
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5 | // CodeMirror is the only global var we claim |
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6 | var CodeMirror = (function() { |
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7 | // This is the function that produces an editor instance. It's |
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8 | // closure is used to store the editor state. |
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9 | function CodeMirror(place, givenOptions) { |
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10 | // Determine effective options based on given values and defaults. |
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11 | var options = {}, defaults = CodeMirror.defaults; |
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12 | for (var opt in defaults) |
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13 | if (defaults.hasOwnProperty(opt)) |
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14 | options[opt] = (givenOptions && givenOptions.hasOwnProperty(opt) ? givenOptions : defaults)[opt]; |
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15 | |
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16 | // The element in which the editor lives. Takes care of scrolling |
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17 | // (if enabled). |
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18 | var wrapper = document.createElement("div"); |
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19 | wrapper.className = "CodeMirror"; |
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20 | // This mess creates the base DOM structure for the editor. |
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21 | wrapper.innerHTML = |
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22 | '<div style="position: relative">' + // Set to the height of the text, causes scrolling |
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23 | '<pre style="position: relative; height: 0; visibility: hidden; overflow: hidden;">' + // To measure line/char size |
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24 | '<span>xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx</span></pre>' + |
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25 | '<div style="position: relative">' + // Moved around its parent to cover visible view |
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26 | '<div class="CodeMirror-gutter"><div class="CodeMirror-gutter-text"></div></div>' + |
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27 | '<div style="overflow: hidden; position: absolute; width: 0; left: 0">' + // Wraps and hides input textarea |
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28 | '<textarea style="height: 1px; position: absolute; width: 1px;" wrap="off"></textarea></div>' + |
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29 | // Provides positioning relative to (visible) text origin |
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30 | '<div class="CodeMirror-lines"><div style="position: relative">' + |
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31 | '<pre class="CodeMirror-cursor"> </pre>' + // Absolutely positioned blinky cursor |
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32 | '<div></div></div></div></div></div>'; // This DIV contains the actual code |
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33 | if (place.appendChild) place.appendChild(wrapper); else place(wrapper); |
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34 | // I've never seen more elegant code in my life. |
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35 | var code = wrapper.firstChild, measure = code.firstChild, mover = measure.nextSibling, |
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36 | gutter = mover.firstChild, gutterText = gutter.firstChild, |
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37 | inputDiv = gutter.nextSibling, input = inputDiv.firstChild, |
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38 | lineSpace = inputDiv.nextSibling.firstChild, cursor = lineSpace.firstChild, lineDiv = cursor.nextSibling; |
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39 | if (options.tabindex != null) input.tabindex = options.tabindex; |
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40 | if (!options.gutter && !options.lineNumbers) gutter.style.display = "none"; |
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41 | |
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42 | // Delayed object wrap timeouts, making sure only one is active. blinker holds an interval. |
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43 | var poll = new Delayed(), highlight = new Delayed(), blinker; |
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44 | |
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45 | // mode holds a mode API object. lines an array of Line objects |
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46 | // (see Line constructor), work an array of lines that should be |
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47 | // parsed, and history the undo history (instance of History |
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48 | // constructor). |
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49 | var mode, lines = [new Line("")], work, history = new History(), focused; |
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50 | loadMode(); |
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51 | // The selection. These are always maintained to point at valid |
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52 | // positions. Inverted is used to remember that the user is |
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53 | // selecting bottom-to-top. |
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54 | var sel = {from: {line: 0, ch: 0}, to: {line: 0, ch: 0}, inverted: false}; |
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55 | // Selection-related flags. shiftSelecting obviously tracks |
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56 | // whether the user is holding shift. reducedSelection is a hack |
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57 | // to get around the fact that we can't create inverted |
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58 | // selections. See below. |
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59 | var shiftSelecting, reducedSelection; |
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60 | // Variables used by startOperation/endOperation to track what |
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61 | // happened during the operation. |
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62 | var updateInput, changes, textChanged, selectionChanged, leaveInputAlone; |
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63 | // Current visible range (may be bigger than the view window). |
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64 | var showingFrom = 0, showingTo = 0, lastHeight = 0, curKeyId = null; |
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65 | // editing will hold an object describing the things we put in the |
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66 | // textarea, to help figure out whether something changed. |
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67 | // bracketHighlighted is used to remember that a backet has been |
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68 | // marked. |
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69 | var editing, bracketHighlighted; |
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70 | |
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71 | // Initialize the content. Somewhat hacky (delayed prepareInput) |
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72 | // to work around browser issues. |
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73 | operation(function(){setValue(options.value || ""); updateInput = false;})(); |
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74 | setTimeout(prepareInput, 20); |
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75 | |
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76 | // Register our event handlers. |
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77 | connect(wrapper, "mousedown", operation(onMouseDown)); |
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78 | // Gecko browsers fire contextmenu *after* opening the menu, at |
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79 | // which point we can't mess with it anymore. Context menu is |
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80 | // handled in onMouseDown for Gecko. |
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81 | if (!gecko) connect(wrapper, "contextmenu", operation(onContextMenu)); |
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82 | connect(code, "dblclick", operation(onDblClick)); |
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83 | connect(wrapper, "scroll", function() {updateDisplay([]); if (options.onScroll) options.onScroll(instance);}); |
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84 | connect(window, "resize", function() {updateDisplay(true);}); |
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85 | connect(input, "keyup", operation(onKeyUp)); |
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86 | connect(input, "keydown", operation(onKeyDown)); |
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87 | connect(input, "keypress", operation(onKeyPress)); |
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88 | connect(input, "focus", onFocus); |
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89 | connect(input, "blur", onBlur); |
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90 | |
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91 | connect(wrapper, "dragenter", function(e){e.stop();}); |
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92 | connect(wrapper, "dragover", function(e){e.stop();}); |
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93 | connect(wrapper, "drop", operation(onDrop)); |
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94 | connect(wrapper, "paste", function(){input.focus(); fastPoll();}); |
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95 | connect(input, "paste", function(){fastPoll();}); |
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96 | connect(input, "cut", function(){fastPoll();}); |
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97 | |
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98 | if (document.activeElement == input) onFocus(); |
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99 | else onBlur(); |
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100 | |
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101 | function isLine(l) {return l >= 0 && l < lines.length;} |
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102 | // The instance object that we'll return. Mostly calls out to |
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103 | // local functions in the CodeMirror function. Some do some extra |
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104 | // range checking and/or clipping. operation is used to wrap the |
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105 | // call so that changes it makes are tracked, and the display is |
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106 | // updated afterwards. |
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107 | var instance = { |
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108 | getValue: getValue, |
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109 | setValue: operation(setValue), |
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110 | getSelection: getSelection, |
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111 | replaceSelection: operation(replaceSelection), |
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112 | focus: function(){input.focus(); onFocus(); fastPoll();}, |
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113 | setOption: function(option, value) { |
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114 | options[option] = value; |
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115 | if (option == "lineNumbers" || option == "gutter") gutterChanged(); |
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116 | else if (option == "mode" || option == "indentUnit") loadMode(); |
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117 | }, |
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118 | getOption: function(option) {return options[option];}, |
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119 | undo: operation(undo), |
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120 | redo: operation(redo), |
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121 | indentLine: operation(function(n) {if (isLine(n)) indentLine(n, "smart");}), |
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122 | historySize: function() {return {undo: history.done.length, redo: history.undone.length};}, |
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123 | matchBrackets: operation(function(){matchBrackets(true);}), |
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124 | getTokenAt: function(pos) { |
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125 | pos = clipPos(pos); |
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126 | return lines[pos.line].getTokenAt(mode, getStateBefore(pos.line), pos.ch); |
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127 | }, |
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128 | cursorCoords: function(start){ |
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129 | if (start == null) start = sel.inverted; |
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130 | return pageCoords(start ? sel.from : sel.to); |
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131 | }, |
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132 | charCoords: function(pos){return pageCoords(clipPos(pos));}, |
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133 | coordsChar: function(coords) { |
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134 | var off = eltOffset(lineSpace); |
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135 | var line = Math.min(showingTo - 1, showingFrom + Math.floor(coords.y / lineHeight())); |
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136 | return clipPos({line: line, ch: charFromX(clipLine(line), coords.x)}); |
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137 | }, |
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138 | getSearchCursor: function(query, pos, caseFold) {return new SearchCursor(query, pos, caseFold);}, |
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139 | markText: operation(function(a, b, c){return operation(markText(a, b, c));}), |
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140 | setMarker: addGutterMarker, |
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141 | clearMarker: removeGutterMarker, |
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142 | setLineClass: operation(setLineClass), |
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143 | lineInfo: lineInfo, |
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144 | addWidget: function(pos, node, scroll) { |
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145 | var pos = localCoords(clipPos(pos), true); |
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146 | node.style.top = (showingFrom * lineHeight() + pos.yBot + paddingTop()) + "px"; |
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147 | node.style.left = (pos.x + paddingLeft()) + "px"; |
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148 | code.appendChild(node); |
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149 | if (scroll) |
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150 | scrollIntoView(pos.x, pos.yBot, pos.x + node.offsetWidth, pos.yBot + node.offsetHeight); |
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151 | }, |
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152 | |
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153 | lineCount: function() {return lines.length;}, |
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154 | getCursor: function(start) { |
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155 | if (start == null) start = sel.inverted; |
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156 | return copyPos(start ? sel.from : sel.to); |
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157 | }, |
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158 | somethingSelected: function() {return !posEq(sel.from, sel.to);}, |
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159 | setCursor: operation(function(line, ch) { |
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160 | if (ch == null && typeof line.line == "number") setCursor(line.line, line.ch); |
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161 | else setCursor(line, ch); |
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162 | }), |
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163 | setSelection: operation(function(from, to) {setSelection(clipPos(from), clipPos(to || from));}), |
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164 | getLine: function(line) {if (isLine(line)) return lines[line].text;}, |
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165 | setLine: operation(function(line, text) { |
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166 | if (isLine(line)) replaceRange(text, {line: line, ch: 0}, {line: line, ch: lines[line].text.length}); |
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167 | }), |
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168 | removeLine: operation(function(line) { |
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169 | if (isLine(line)) replaceRange("", {line: line, ch: 0}, clipPos({line: line+1, ch: 0})); |
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170 | }), |
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171 | replaceRange: operation(replaceRange), |
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172 | getRange: function(from, to) {return getRange(clipPos(from), clipPos(to));}, |
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173 | |
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174 | operation: function(f){return operation(f)();}, |
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175 | refresh: function(){updateDisplay(true);}, |
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176 | getInputField: function(){return input;}, |
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177 | getWrapperElement: function(){return wrapper;} |
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178 | }; |
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179 | |
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180 | function setValue(code) { |
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181 | history = null; |
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182 | var top = {line: 0, ch: 0}; |
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183 | updateLines(top, {line: lines.length - 1, ch: lines[lines.length-1].text.length}, |
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184 | splitLines(code), top, top); |
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185 | history = new History(); |
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186 | } |
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187 | function getValue(code) { |
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188 | var text = []; |
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189 | for (var i = 0, l = lines.length; i < l; ++i) |
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190 | text.push(lines[i].text); |
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191 | return text.join("\n"); |
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192 | } |
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193 | |
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194 | function onMouseDown(e) { |
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195 | // First, see if this is a click in the gutter |
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196 | for (var n = e.target(); n != wrapper; n = n.parentNode) |
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197 | if (n.parentNode == gutterText) { |
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198 | if (options.onGutterClick) |
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199 | options.onGutterClick(instance, indexOf(gutterText.childNodes, n) + showingFrom); |
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200 | return e.stop(); |
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201 | } |
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202 | |
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203 | if (gecko && e.button() == 3) onContextMenu(e); |
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204 | if (e.button() != 1) return; |
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205 | // For button 1, if it was clicked inside the editor |
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206 | // (posFromMouse returning non-null), we have to adjust the |
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207 | // selection. |
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208 | var start = posFromMouse(e), last = start, going; |
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209 | if (!start) {if (e.target() == wrapper) e.stop(); return;} |
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210 | setCursor(start.line, start.ch, false); |
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211 | |
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212 | if (!focused) onFocus(); |
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213 | e.stop(); |
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214 | // And then we have to see if it's a drag event, in which case |
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215 | // the dragged-over text must be selected. |
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216 | function end() { |
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217 | input.focus(); |
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218 | updateInput = true; |
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219 | move(); up(); |
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220 | } |
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221 | function extend(e) { |
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222 | var cur = posFromMouse(e, true); |
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223 | if (cur && !posEq(cur, last)) { |
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224 | if (!focused) onFocus(); |
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225 | last = cur; |
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226 | setSelection(start, cur); |
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227 | updateInput = false; |
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228 | var visible = visibleLines(); |
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229 | if (cur.line >= visible.to || cur.line < visible.from) |
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230 | going = setTimeout(operation(function(){extend(e);}), 150); |
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231 | } |
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232 | } |
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233 | |
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234 | var move = connect(document, "mousemove", operation(function(e) { |
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235 | clearTimeout(going); |
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236 | e.stop(); |
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237 | extend(e); |
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238 | }), true); |
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239 | var up = connect(document, "mouseup", operation(function(e) { |
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240 | clearTimeout(going); |
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241 | var cur = posFromMouse(e); |
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242 | if (cur) setSelection(start, cur); |
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243 | e.stop(); |
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244 | end(); |
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245 | }), true); |
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246 | } |
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247 | function onDblClick(e) { |
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248 | var pos = posFromMouse(e); |
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249 | if (!pos) return; |
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250 | selectWordAt(pos); |
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251 | e.stop(); |
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252 | } |
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253 | function onDrop(e) { |
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254 | var pos = posFromMouse(e, true), files = e.e.dataTransfer.files; |
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255 | if (!pos || options.readOnly) return; |
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256 | if (files && files.length && window.FileReader && window.File) { |
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257 | var n = files.length, text = Array(n), read = 0; |
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258 | for (var i = 0; i < n; ++i) loadFile(files[i], i); |
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259 | function loadFile(file, i) { |
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260 | var reader = new FileReader; |
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261 | reader.onload = function() { |
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262 | text[i] = reader.result; |
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263 | if (++read == n) replaceRange(text.join(""), clipPos(pos), clipPos(pos)); |
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264 | }; |
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265 | reader.readAsText(file); |
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266 | } |
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267 | } |
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268 | else { |
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269 | try { |
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270 | var text = e.e.dataTransfer.getData("Text"); |
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271 | if (text) replaceRange(text, pos, pos); |
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272 | } |
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273 | catch(e){} |
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274 | } |
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275 | } |
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276 | function onKeyDown(e) { |
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277 | if (!focused) onFocus(); |
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278 | |
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279 | var code = e.e.keyCode; |
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280 | // Tries to detect ctrl on non-mac, cmd on mac. |
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281 | var mod = (mac ? e.e.metaKey : e.e.ctrlKey) && !e.e.altKey, anyMod = e.e.ctrlKey || e.e.altKey || e.e.metaKey; |
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282 | if (code == 16 || e.e.shiftKey) shiftSelecting = shiftSelecting || (sel.inverted ? sel.to : sel.from); |
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283 | else shiftSelecting = null; |
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284 | // First give onKeyEvent option a chance to handle this. |
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285 | if (options.onKeyEvent && options.onKeyEvent(instance, addStop(e.e))) return; |
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286 | |
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287 | if (code == 33 || code == 34) {scrollPage(code == 34); return e.stop();} // page up/down |
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288 | if (mod && (code == 36 || code == 35)) {scrollEnd(code == 36); return e.stop();} // ctrl-home/end |
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289 | if (mod && code == 65) {selectAll(); return e.stop();} // ctrl-a |
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290 | if (!options.readOnly) { |
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291 | if (!anyMod && code == 13) {return;} // enter |
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292 | if (!anyMod && code == 9 && handleTab(e.e.shiftKey)) return e.stop(); // tab |
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293 | if (mod && code == 90) {undo(); return e.stop();} // ctrl-z |
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294 | if (mod && ((e.e.shiftKey && code == 90) || code == 89)) {redo(); return e.stop();} // ctrl-shift-z, ctrl-y |
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295 | } |
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296 | |
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297 | // Key id to use in the movementKeys map. We also pass it to |
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298 | // fastPoll in order to 'self learn'. We need this because |
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299 | // reducedSelection, the hack where we collapse the selection to |
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300 | // its start when it is inverted and a movement key is pressed |
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301 | // (and later restore it again), shouldn't be used for |
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302 | // non-movement keys. |
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303 | curKeyId = (mod ? "c" : "") + code; |
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304 | if (sel.inverted && movementKeys.hasOwnProperty(curKeyId)) { |
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305 | var range = selRange(input); |
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306 | if (range) { |
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307 | reducedSelection = {anchor: range.start}; |
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308 | setSelRange(input, range.start, range.start); |
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309 | } |
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310 | } |
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311 | fastPoll(curKeyId); |
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312 | } |
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313 | function onKeyUp(e) { |
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314 | if (reducedSelection) { |
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315 | reducedSelection = null; |
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316 | updateInput = true; |
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317 | } |
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318 | if (e.e.keyCode == 16) shiftSelecting = null; |
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319 | } |
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320 | function onKeyPress(e) { |
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321 | if (options.onKeyEvent && options.onKeyEvent(instance, addStop(e.e))) return; |
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322 | if (options.electricChars && mode.electricChars) { |
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323 | var ch = String.fromCharCode(e.e.charCode == null ? e.e.keyCode : e.e.charCode); |
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324 | if (mode.electricChars.indexOf(ch) > -1) |
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325 | setTimeout(operation(function() {indentLine(sel.to.line, "smart");}), 50); |
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326 | } |
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327 | var code = e.e.keyCode; |
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328 | // Re-stop tab and enter. Necessary on some browsers. |
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329 | if (code == 13) {handleEnter(); e.stop();} |
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330 | else if (code == 9 && options.tabMode != "default") e.stop(); |
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331 | else fastPoll(curKeyId); |
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332 | } |
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333 | |
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334 | function onFocus() { |
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335 | if (!focused && options.onFocus) options.onFocus(instance); |
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336 | focused = true; |
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337 | slowPoll(); |
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338 | if (wrapper.className.search(/\bCodeMirror-focused\b/) == -1) |
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339 | wrapper.className += " CodeMirror-focused"; |
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340 | restartBlink(); |
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341 | } |
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342 | function onBlur() { |
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343 | if (focused && options.onBlur) options.onBlur(instance); |
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344 | clearInterval(blinker); |
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345 | shiftSelecting = null; |
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346 | focused = false; |
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347 | wrapper.className = wrapper.className.replace(" CodeMirror-focused", ""); |
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348 | } |
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349 | |
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350 | // Replace the range from from to to by the strings in newText. |
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351 | // Afterwards, set the selection to selFrom, selTo. |
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352 | function updateLines(from, to, newText, selFrom, selTo) { |
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353 | if (history) { |
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354 | var old = []; |
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355 | for (var i = from.line, e = to.line + 1; i < e; ++i) old.push(lines[i].text); |
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356 | history.addChange(from.line, newText.length, old); |
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357 | while (history.done.length > options.undoDepth) history.done.shift(); |
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358 | } |
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359 | updateLinesNoUndo(from, to, newText, selFrom, selTo); |
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360 | } |
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361 | function unredoHelper(from, to) { |
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362 | var change = from.pop(); |
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363 | if (change) { |
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364 | var replaced = [], end = change.start + change.added; |
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365 | for (var i = change.start; i < end; ++i) replaced.push(lines[i].text); |
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366 | to.push({start: change.start, added: change.old.length, old: replaced}); |
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367 | var pos = clipPos({line: change.start + change.old.length - 1, |
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368 | ch: editEnd(replaced[replaced.length-1], change.old[change.old.length-1])}); |
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369 | updateLinesNoUndo({line: change.start, ch: 0}, {line: end - 1, ch: lines[end-1].text.length}, change.old, pos, pos); |
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370 | } |
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371 | } |
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372 | function undo() {unredoHelper(history.done, history.undone);} |
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373 | function redo() {unredoHelper(history.undone, history.done);} |
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374 | |
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375 | function updateLinesNoUndo(from, to, newText, selFrom, selTo) { |
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376 | var nlines = to.line - from.line, firstLine = lines[from.line], lastLine = lines[to.line]; |
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377 | // First adjust the line structure, taking some care to leave highlighting intact. |
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378 | if (firstLine == lastLine) { |
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379 | if (newText.length == 1) |
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380 | firstLine.replace(from.ch, to.ch, newText[0]); |
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381 | else { |
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382 | lastLine = firstLine.split(to.ch, newText[newText.length-1]); |
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383 | var spliceargs = [from.line + 1, nlines]; |
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384 | firstLine.replace(from.ch, firstLine.text.length, newText[0]); |
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385 | for (var i = 1, e = newText.length - 1; i < e; ++i) spliceargs.push(new Line(newText[i])); |
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386 | spliceargs.push(lastLine); |
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387 | lines.splice.apply(lines, spliceargs); |
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388 | } |
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389 | } |
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390 | else if (newText.length == 1) { |
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391 | firstLine.replace(from.ch, firstLine.text.length, newText[0] + lastLine.text.slice(to.ch)); |
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392 | lines.splice(from.line + 1, nlines); |
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393 | } |
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394 | else { |
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395 | var spliceargs = [from.line + 1, nlines - 1]; |
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396 | firstLine.replace(from.ch, firstLine.text.length, newText[0]); |
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397 | lastLine.replace(0, to.ch, newText[newText.length-1]); |
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398 | for (var i = 1, e = newText.length - 1; i < e; ++i) spliceargs.push(new Line(newText[i])); |
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399 | lines.splice.apply(lines, spliceargs); |
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400 | } |
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401 | |
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402 | // Add these lines to the work array, so that they will be |
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403 | // highlighted. Adjust work lines if lines were added/removed. |
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404 | var newWork = [], lendiff = newText.length - nlines - 1; |
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405 | for (var i = 0, l = work.length; i < l; ++i) { |
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406 | var task = work[i]; |
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407 | if (task < from.line) newWork.push(task); |
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408 | else if (task > to.line) newWork.push(task + lendiff); |
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409 | } |
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410 | if (newText.length) newWork.push(from.line); |
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411 | work = newWork; |
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412 | startWorker(100); |
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413 | // Remember that these lines changed, for updating the display |
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414 | changes.push({from: from.line, to: to.line + 1, diff: lendiff}); |
---|
415 | textChanged = true; |
---|
416 | |
---|
417 | // Update the selection |
---|
418 | function updateLine(n) {return n <= Math.min(to.line, to.line + lendiff) ? n : n + lendiff;} |
---|
419 | setSelection(selFrom, selTo, updateLine(sel.from.line), updateLine(sel.to.line)); |
---|
420 | |
---|
421 | // Make sure the scroll-size div has the correct height. |
---|
422 | code.style.height = (lines.length * lineHeight() + 2 * paddingTop()) + "px"; |
---|
423 | } |
---|
424 | |
---|
425 | function replaceRange(code, from, to) { |
---|
426 | from = clipPos(from); |
---|
427 | if (!to) to = from; else to = clipPos(to); |
---|
428 | code = splitLines(code); |
---|
429 | function adjustPos(pos) { |
---|
430 | if (posLess(pos, from)) return pos; |
---|
431 | if (!posLess(to, pos)) return end; |
---|
432 | var line = pos.line + code.length - (to.line - from.line) - 1; |
---|
433 | var ch = pos.ch; |
---|
434 | if (pos.line == to.line) |
---|
435 | ch += code[code.length-1].length - (to.ch - (to.line == from.line ? from.ch : 0)); |
---|
436 | return {line: line, ch: ch}; |
---|
437 | } |
---|
438 | var end; |
---|
439 | replaceRange1(code, from, to, function(end1) { |
---|
440 | end = end1; |
---|
441 | return {from: adjustPos(sel.from), to: adjustPos(sel.to)}; |
---|
442 | }); |
---|
443 | return end; |
---|
444 | } |
---|
445 | function replaceSelection(code, collapse) { |
---|
446 | replaceRange1(splitLines(code), sel.from, sel.to, function(end) { |
---|
447 | if (collapse == "end") return {from: end, to: end}; |
---|
448 | else if (collapse == "start") return {from: sel.from, to: sel.from}; |
---|
449 | else return {from: sel.from, to: end}; |
---|
450 | }); |
---|
451 | } |
---|
452 | function replaceRange1(code, from, to, computeSel) { |
---|
453 | var endch = code.length == 1 ? code[0].length + from.ch : code[code.length-1].length; |
---|
454 | var newSel = computeSel({line: from.line + code.length - 1, ch: endch}); |
---|
455 | updateLines(from, to, code, newSel.from, newSel.to); |
---|
456 | } |
---|
457 | |
---|
458 | function getRange(from, to) { |
---|
459 | var l1 = from.line, l2 = to.line; |
---|
460 | if (l1 == l2) return lines[l1].text.slice(from.ch, to.ch); |
---|
461 | var code = [lines[l1].text.slice(from.ch)]; |
---|
462 | for (var i = l1 + 1; i < l2; ++i) code.push(lines[i].text); |
---|
463 | code.push(lines[l2].text.slice(0, to.ch)); |
---|
464 | return code.join("\n"); |
---|
465 | } |
---|
466 | function getSelection() { |
---|
467 | return getRange(sel.from, sel.to); |
---|
468 | } |
---|
469 | |
---|
470 | var pollingFast = false; // Ensures slowPoll doesn't cancel fastPoll |
---|
471 | function slowPoll() { |
---|
472 | if (pollingFast) return; |
---|
473 | poll.set(2000, function() { |
---|
474 | startOperation(); |
---|
475 | readInput(); |
---|
476 | if (focused) slowPoll(); |
---|
477 | endOperation(); |
---|
478 | }); |
---|
479 | } |
---|
480 | function fastPoll(keyId) { |
---|
481 | var missed = false; |
---|
482 | pollingFast = true; |
---|
483 | function p() { |
---|
484 | startOperation(); |
---|
485 | var changed = readInput(); |
---|
486 | if (changed == "moved" && keyId) movementKeys[keyId] = true; |
---|
487 | if (!changed && !missed) {missed = true; poll.set(80, p);} |
---|
488 | else {pollingFast = false; slowPoll();} |
---|
489 | endOperation(); |
---|
490 | } |
---|
491 | poll.set(20, p); |
---|
492 | } |
---|
493 | |
---|
494 | // Inspects the textarea, compares its state (content, selection) |
---|
495 | // to the data in the editing variable, and updates the editor |
---|
496 | // content or cursor if something changed. |
---|
497 | function readInput() { |
---|
498 | var changed = false, text = input.value, sr = selRange(input); |
---|
499 | if (!sr) return false; |
---|
500 | var changed = editing.text != text, rs = reducedSelection; |
---|
501 | var moved = changed || sr.start != editing.start || sr.end != (rs ? editing.start : editing.end); |
---|
502 | if (reducedSelection && !moved && sel.from.line == 0 && sel.from.ch == 0) |
---|
503 | reducedSelection = null; |
---|
504 | else if (!moved) return false; |
---|
505 | if (changed) { |
---|
506 | shiftSelecting = reducedSelection = null; |
---|
507 | if (options.readOnly) {updateInput = true; return "changed";} |
---|
508 | } |
---|
509 | |
---|
510 | // Compute selection start and end based on start/end offsets in textarea |
---|
511 | function computeOffset(n, startLine) { |
---|
512 | var pos = 0; |
---|
513 | for (;;) { |
---|
514 | var found = text.indexOf("\n", pos); |
---|
515 | if (found == -1 || (text.charAt(found-1) == "\r" ? found - 1 : found) >= n) |
---|
516 | return {line: startLine, ch: n - pos}; |
---|
517 | ++startLine; |
---|
518 | pos = found + 1; |
---|
519 | } |
---|
520 | } |
---|
521 | var from = computeOffset(sr.start, editing.from), |
---|
522 | to = computeOffset(sr.end, editing.from); |
---|
523 | // Here we have to take the reducedSelection hack into account, |
---|
524 | // so that you can, for example, press shift-up at the start of |
---|
525 | // your selection and have the right thing happen. |
---|
526 | if (rs) { |
---|
527 | from = sr.start == rs.anchor ? to : from; |
---|
528 | to = shiftSelecting ? sel.to : sr.start == rs.anchor ? from : to; |
---|
529 | if (!posLess(from, to)) { |
---|
530 | reducedSelection = null; |
---|
531 | sel.inverted = false; |
---|
532 | var tmp = from; from = to; to = tmp; |
---|
533 | } |
---|
534 | } |
---|
535 | |
---|
536 | // In some cases (cursor on same line as before), we don't have |
---|
537 | // to update the textarea content at all. |
---|
538 | if (from.line == to.line && from.line == sel.from.line && from.line == sel.to.line && !shiftSelecting) |
---|
539 | updateInput = false; |
---|
540 | |
---|
541 | // Magic mess to extract precise edited range from the changed |
---|
542 | // string. |
---|
543 | if (changed) { |
---|
544 | var start = 0, end = text.length, len = Math.min(end, editing.text.length); |
---|
545 | var c, line = editing.from, nl = -1; |
---|
546 | while (start < len && (c = text.charAt(start)) == editing.text.charAt(start)) { |
---|
547 | ++start; |
---|
548 | if (c == "\n") {line++; nl = start;} |
---|
549 | } |
---|
550 | var ch = nl > -1 ? start - nl : start, endline = editing.to - 1, edend = editing.text.length; |
---|
551 | for (;;) { |
---|
552 | c = editing.text.charAt(edend); |
---|
553 | if (c == "\n") endline--; |
---|
554 | if (text.charAt(end) != c) {++end; ++edend; break;} |
---|
555 | if (edend <= start || end <= start) break; |
---|
556 | --end; --edend; |
---|
557 | } |
---|
558 | var nl = editing.text.lastIndexOf("\n", edend - 1), endch = nl == -1 ? edend : edend - nl - 1; |
---|
559 | updateLines({line: line, ch: ch}, {line: endline, ch: endch}, splitLines(text.slice(start, end)), from, to); |
---|
560 | if (line != endline || from.line != line) updateInput = true; |
---|
561 | } |
---|
562 | else setSelection(from, to); |
---|
563 | |
---|
564 | editing.text = text; editing.start = sr.start; editing.end = sr.end; |
---|
565 | return changed ? "changed" : moved ? "moved" : false; |
---|
566 | } |
---|
567 | |
---|
568 | // Set the textarea content and selection range to match the |
---|
569 | // editor state. |
---|
570 | function prepareInput() { |
---|
571 | var text = []; |
---|
572 | var from = Math.max(0, sel.from.line - 1), to = Math.min(lines.length, sel.to.line + 2); |
---|
573 | for (var i = from; i < to; ++i) text.push(lines[i].text); |
---|
574 | text = input.value = text.join(lineSep); |
---|
575 | var startch = sel.from.ch, endch = sel.to.ch; |
---|
576 | for (var i = from; i < sel.from.line; ++i) |
---|
577 | startch += lineSep.length + lines[i].text.length; |
---|
578 | for (var i = from; i < sel.to.line; ++i) |
---|
579 | endch += lineSep.length + lines[i].text.length; |
---|
580 | editing = {text: text, from: from, to: to, start: startch, end: endch}; |
---|
581 | setSelRange(input, startch, reducedSelection ? startch : endch); |
---|
582 | } |
---|
583 | |
---|
584 | function scrollCursorIntoView() { |
---|
585 | var cursor = localCoords(sel.inverted ? sel.from : sel.to); |
---|
586 | return scrollIntoView(cursor.x, cursor.y, cursor.x, cursor.yBot); |
---|
587 | } |
---|
588 | function scrollIntoView(x1, y1, x2, y2) { |
---|
589 | var pl = paddingLeft(), pt = paddingTop(); |
---|
590 | y1 += pt; y2 += pt; x1 += pl; x2 += pl; |
---|
591 | var screen = wrapper.clientHeight, screentop = wrapper.scrollTop, scrolled = false, result = true; |
---|
592 | if (y1 < screentop) {wrapper.scrollTop = Math.max(0, y1 - 10); scrolled = true;} |
---|
593 | else if (y2 > screentop + screen) {wrapper.scrollTop = y2 + 10 - screen; scrolled = true;} |
---|
594 | |
---|
595 | var screenw = wrapper.clientWidth, screenleft = wrapper.scrollLeft; |
---|
596 | if (x1 < screenleft) {wrapper.scrollLeft = Math.max(0, x1 - 10); scrolled = true;} |
---|
597 | else if (x2 > screenw + screenleft) { |
---|
598 | wrapper.scrollLeft = x2 + 10 - screenw; |
---|
599 | scrolled = true; |
---|
600 | if (x2 > code.clientWidth) result = false; |
---|
601 | } |
---|
602 | if (scrolled && options.onScroll) options.onScroll(instance); |
---|
603 | return result; |
---|
604 | } |
---|
605 | |
---|
606 | function visibleLines() { |
---|
607 | var lh = lineHeight(), top = wrapper.scrollTop - paddingTop(); |
---|
608 | return {from: Math.min(lines.length, Math.max(0, Math.floor(top / lh))), |
---|
609 | to: Math.min(lines.length, Math.ceil((top + wrapper.clientHeight) / lh))}; |
---|
610 | } |
---|
611 | // Uses a set of changes plus the current scroll position to |
---|
612 | // determine which DOM updates have to be made, and makes the |
---|
613 | // updates. |
---|
614 | function updateDisplay(changes) { |
---|
615 | if (!wrapper.clientWidth) { |
---|
616 | showingFrom = showingTo = 0; |
---|
617 | return; |
---|
618 | } |
---|
619 | // First create a range of theoretically intact lines, and punch |
---|
620 | // holes in that using the change info. |
---|
621 | var intact = changes === true ? [] : [{from: showingFrom, to: showingTo, domStart: 0}]; |
---|
622 | for (var i = 0, l = changes.length || 0; i < l; ++i) { |
---|
623 | var change = changes[i], intact2 = [], diff = change.diff || 0; |
---|
624 | for (var j = 0, l2 = intact.length; j < l2; ++j) { |
---|
625 | var range = intact[j]; |
---|
626 | if (change.to <= range.from) |
---|
627 | intact2.push({from: range.from + diff, to: range.to + diff, domStart: range.domStart}); |
---|
628 | else if (range.to <= change.from) |
---|
629 | intact2.push(range); |
---|
630 | else { |
---|
631 | if (change.from > range.from) |
---|
632 | intact2.push({from: range.from, to: change.from, domStart: range.domStart}) |
---|
633 | if (change.to < range.to) |
---|
634 | intact2.push({from: change.to + diff, to: range.to + diff, |
---|
635 | domStart: range.domStart + (change.to - range.from)}); |
---|
636 | } |
---|
637 | } |
---|
638 | intact = intact2; |
---|
639 | } |
---|
640 | |
---|
641 | // Then, determine which lines we'd want to see, and which |
---|
642 | // updates have to be made to get there. |
---|
643 | var visible = visibleLines(); |
---|
644 | var from = Math.min(showingFrom, Math.max(visible.from - 3, 0)), |
---|
645 | to = Math.min(lines.length, Math.max(showingTo, visible.to + 3)), |
---|
646 | updates = [], domPos = 0, domEnd = showingTo - showingFrom, pos = from, changedLines = 0; |
---|
647 | |
---|
648 | for (var i = 0, l = intact.length; i < l; ++i) { |
---|
649 | var range = intact[i]; |
---|
650 | if (range.to <= from) continue; |
---|
651 | if (range.from >= to) break; |
---|
652 | if (range.domStart > domPos || range.from > pos) { |
---|
653 | updates.push({from: pos, to: range.from, domSize: range.domStart - domPos, domStart: domPos}); |
---|
654 | changedLines += range.from - pos; |
---|
655 | } |
---|
656 | pos = range.to; |
---|
657 | domPos = range.domStart + (range.to - range.from); |
---|
658 | } |
---|
659 | if (domPos != domEnd || pos != to) { |
---|
660 | changedLines += Math.abs(to - pos); |
---|
661 | updates.push({from: pos, to: to, domSize: domEnd - domPos, domStart: domPos}); |
---|
662 | } |
---|
663 | |
---|
664 | if (!updates.length) return; |
---|
665 | lineDiv.style.display = "none"; |
---|
666 | // If more than 30% of the screen needs update, just do a full |
---|
667 | // redraw (which is quicker than patching) |
---|
668 | if (changedLines > (visible.to - visible.from) * .3) |
---|
669 | refreshDisplay(from = Math.max(visible.from - 10, 0), to = Math.min(visible.to + 7, lines.length)); |
---|
670 | // Otherwise, only update the stuff that needs updating. |
---|
671 | else |
---|
672 | patchDisplay(updates); |
---|
673 | lineDiv.style.display = ""; |
---|
674 | |
---|
675 | // Position the mover div to align with the lines it's supposed |
---|
676 | // to be showing (which will cover the visible display) |
---|
677 | var different = from != showingFrom || to != showingTo || lastHeight != wrapper.clientHeight; |
---|
678 | showingFrom = from; showingTo = to; |
---|
679 | mover.style.top = (from * lineHeight()) + "px"; |
---|
680 | if (different) { |
---|
681 | lastHeight = wrapper.clientHeight; |
---|
682 | code.style.height = (lines.length * lineHeight() + 2 * paddingTop()) + "px"; |
---|
683 | updateGutter(); |
---|
684 | } |
---|
685 | |
---|
686 | // Since this is all rather error prone, it is honoured with the |
---|
687 | // only assertion in the whole file. |
---|
688 | if (lineDiv.childNodes.length != showingTo - showingFrom) |
---|
689 | throw new Error("BAD PATCH! " + JSON.stringify(updates) + " size=" + (showingTo - showingFrom) + |
---|
690 | " nodes=" + lineDiv.childNodes.length); |
---|
691 | updateCursor(); |
---|
692 | } |
---|
693 | |
---|
694 | function refreshDisplay(from, to) { |
---|
695 | var html = [], start = {line: from, ch: 0}, inSel = posLess(sel.from, start) && !posLess(sel.to, start); |
---|
696 | for (var i = from; i < to; ++i) { |
---|
697 | var ch1 = null, ch2 = null; |
---|
698 | if (inSel) { |
---|
699 | ch1 = 0; |
---|
700 | if (sel.to.line == i) {inSel = false; ch2 = sel.to.ch;} |
---|
701 | } |
---|
702 | else if (sel.from.line == i) { |
---|
703 | if (sel.to.line == i) {ch1 = sel.from.ch; ch2 = sel.to.ch;} |
---|
704 | else {inSel = true; ch1 = sel.from.ch;} |
---|
705 | } |
---|
706 | html.push(lines[i].getHTML(ch1, ch2, true)); |
---|
707 | } |
---|
708 | lineDiv.innerHTML = html.join(""); |
---|
709 | } |
---|
710 | function patchDisplay(updates) { |
---|
711 | // Slightly different algorithm for IE (badInnerHTML), since |
---|
712 | // there .innerHTML on PRE nodes is dumb, and discards |
---|
713 | // whitespace. |
---|
714 | var sfrom = sel.from.line, sto = sel.to.line, off = 0, |
---|
715 | scratch = badInnerHTML && document.createElement("div"); |
---|
716 | for (var i = 0, e = updates.length; i < e; ++i) { |
---|
717 | var rec = updates[i]; |
---|
718 | var extra = (rec.to - rec.from) - rec.domSize; |
---|
719 | var nodeAfter = lineDiv.childNodes[rec.domStart + rec.domSize + off] || null; |
---|
720 | if (badInnerHTML) |
---|
721 | for (var j = Math.max(-extra, rec.domSize); j > 0; --j) |
---|
722 | lineDiv.removeChild(nodeAfter ? nodeAfter.previousSibling : lineDiv.lastChild); |
---|
723 | else if (extra) { |
---|
724 | for (var j = Math.max(0, extra); j > 0; --j) |
---|
725 | lineDiv.insertBefore(document.createElement("pre"), nodeAfter); |
---|
726 | for (var j = Math.max(0, -extra); j > 0; --j) |
---|
727 | lineDiv.removeChild(nodeAfter ? nodeAfter.previousSibling : lineDiv.lastChild); |
---|
728 | } |
---|
729 | var node = lineDiv.childNodes[rec.domStart + off], inSel = sfrom < rec.from && sto >= rec.from; |
---|
730 | for (var j = rec.from; j < rec.to; ++j) { |
---|
731 | var ch1 = null, ch2 = null; |
---|
732 | if (inSel) { |
---|
733 | ch1 = 0; |
---|
734 | if (sto == j) {inSel = false; ch2 = sel.to.ch;} |
---|
735 | } |
---|
736 | else if (sfrom == j) { |
---|
737 | if (sto == j) {ch1 = sel.from.ch; ch2 = sel.to.ch;} |
---|
738 | else {inSel = true; ch1 = sel.from.ch;} |
---|
739 | } |
---|
740 | if (badInnerHTML) { |
---|
741 | scratch.innerHTML = lines[j].getHTML(ch1, ch2, true); |
---|
742 | lineDiv.insertBefore(scratch.firstChild, nodeAfter); |
---|
743 | } |
---|
744 | else { |
---|
745 | node.innerHTML = lines[j].getHTML(ch1, ch2, false); |
---|
746 | node.className = lines[j].className || ""; |
---|
747 | node = node.nextSibling; |
---|
748 | } |
---|
749 | } |
---|
750 | off += extra; |
---|
751 | } |
---|
752 | } |
---|
753 | |
---|
754 | function updateGutter() { |
---|
755 | if (!options.gutter && !options.lineNumbers) return; |
---|
756 | var hText = mover.offsetHeight, hEditor = wrapper.clientHeight; |
---|
757 | gutter.style.height = (hText - hEditor < 2 ? hEditor : hText) + "px"; |
---|
758 | var html = []; |
---|
759 | for (var i = showingFrom; i < showingTo; ++i) { |
---|
760 | var marker = lines[i].gutterMarker; |
---|
761 | var text = options.lineNumbers ? i + options.firstLineNumber : null; |
---|
762 | if (marker && marker.text) |
---|
763 | text = marker.text.replace("%N%", text != null ? text : ""); |
---|
764 | else if (text == null) |
---|
765 | text = "\u00a0"; |
---|
766 | html.push((marker && marker.style ? '<pre class="' + marker.style + '">' : "<pre>"), text, "</pre>"); |
---|
767 | } |
---|
768 | gutter.style.display = "none"; |
---|
769 | gutterText.innerHTML = html.join(""); |
---|
770 | var minwidth = String(lines.length).length, firstNode = gutterText.firstChild, val = eltText(firstNode), pad = ""; |
---|
771 | while (val.length + pad.length < minwidth) pad += "\u00a0"; |
---|
772 | if (pad) firstNode.insertBefore(document.createTextNode(pad), firstNode.firstChild); |
---|
773 | gutter.style.display = ""; |
---|
774 | lineSpace.style.marginLeft = gutter.offsetWidth + "px"; |
---|
775 | } |
---|
776 | function updateCursor() { |
---|
777 | var head = sel.inverted ? sel.from : sel.to; |
---|
778 | var x = charX(head.line, head.ch) + "px", y = (head.line - showingFrom) * lineHeight() + "px"; |
---|
779 | inputDiv.style.top = y; inputDiv.style.left = x; |
---|
780 | if (posEq(sel.from, sel.to)) { |
---|
781 | cursor.style.top = y; cursor.style.left = x; |
---|
782 | cursor.style.display = ""; |
---|
783 | } |
---|
784 | else cursor.style.display = "none"; |
---|
785 | } |
---|
786 | |
---|
787 | // Update the selection. Last two args are only used by |
---|
788 | // updateLines, since they have to be expressed in the line |
---|
789 | // numbers before the update. |
---|
790 | function setSelection(from, to, oldFrom, oldTo) { |
---|
791 | if (posEq(sel.from, from) && posEq(sel.to, to)) return; |
---|
792 | var sh = shiftSelecting && clipPos(shiftSelecting); |
---|
793 | if (posLess(to, from)) {var tmp = to; to = from; from = tmp;} |
---|
794 | if (sh) { |
---|
795 | if (posLess(sh, from)) from = sh; |
---|
796 | else if (posLess(to, sh)) to = sh; |
---|
797 | } |
---|
798 | |
---|
799 | var startEq = posEq(sel.to, to), endEq = posEq(sel.from, from); |
---|
800 | if (posEq(from, to)) sel.inverted = false; |
---|
801 | else if (startEq && !endEq) sel.inverted = true; |
---|
802 | else if (endEq && !startEq) sel.inverted = false; |
---|
803 | |
---|
804 | // Some ugly logic used to only mark the lines that actually did |
---|
805 | // see a change in selection as changed, rather than the whole |
---|
806 | // selected range. |
---|
807 | if (oldFrom == null) {oldFrom = sel.from.line; oldTo = sel.to.line;} |
---|
808 | if (posEq(from, to)) { |
---|
809 | if (!posEq(sel.from, sel.to)) |
---|
810 | changes.push({from: oldFrom, to: oldTo + 1}); |
---|
811 | } |
---|
812 | else if (posEq(sel.from, sel.to)) { |
---|
813 | changes.push({from: from.line, to: to.line + 1}); |
---|
814 | } |
---|
815 | else { |
---|
816 | if (!posEq(from, sel.from)) { |
---|
817 | if (from.line < oldFrom) |
---|
818 | changes.push({from: from.line, to: Math.min(to.line, oldFrom) + 1}); |
---|
819 | else |
---|
820 | changes.push({from: oldFrom, to: Math.min(oldTo, from.line) + 1}); |
---|
821 | } |
---|
822 | if (!posEq(to, sel.to)) { |
---|
823 | if (to.line < oldTo) |
---|
824 | changes.push({from: Math.max(oldFrom, from.line), to: oldTo + 1}); |
---|
825 | else |
---|
826 | changes.push({from: Math.max(from.line, oldTo), to: to.line + 1}); |
---|
827 | } |
---|
828 | } |
---|
829 | sel.from = from; sel.to = to; |
---|
830 | selectionChanged = true; |
---|
831 | } |
---|
832 | function setCursor(line, ch) { |
---|
833 | var pos = clipPos({line: line, ch: ch || 0}); |
---|
834 | setSelection(pos, pos); |
---|
835 | } |
---|
836 | |
---|
837 | function clipLine(n) {return Math.max(0, Math.min(n, lines.length-1));} |
---|
838 | function clipPos(pos) { |
---|
839 | if (pos.line < 0) return {line: 0, ch: 0}; |
---|
840 | if (pos.line >= lines.length) return {line: lines.length-1, ch: lines[lines.length-1].text.length}; |
---|
841 | var ch = pos.ch, linelen = lines[pos.line].text.length; |
---|
842 | if (ch == null || ch > linelen) return {line: pos.line, ch: linelen}; |
---|
843 | else if (ch < 0) return {line: pos.line, ch: 0}; |
---|
844 | else return pos; |
---|
845 | } |
---|
846 | |
---|
847 | function scrollPage(down) { |
---|
848 | var linesPerPage = Math.floor(wrapper.clientHeight / lineHeight()), head = sel.inverted ? sel.from : sel.to; |
---|
849 | setCursor(head.line + (Math.max(linesPerPage - 1, 1) * (down ? 1 : -1)), head.ch); |
---|
850 | } |
---|
851 | function scrollEnd(top) { |
---|
852 | setCursor(top ? 0 : lines.length - 1); |
---|
853 | } |
---|
854 | function selectAll() { |
---|
855 | var endLine = lines.length - 1; |
---|
856 | setSelection({line: 0, ch: 0}, {line: endLine, ch: lines[endLine].text.length}); |
---|
857 | } |
---|
858 | function selectWordAt(pos) { |
---|
859 | var line = lines[pos.line].text; |
---|
860 | var start = pos.ch, end = pos.ch; |
---|
861 | while (start > 0 && /\w/.test(line.charAt(start - 1))) --start; |
---|
862 | while (end < line.length - 1 && /\w/.test(line.charAt(end))) ++end; |
---|
863 | setSelection({line: pos.line, ch: start}, {line: pos.line, ch: end}); |
---|
864 | } |
---|
865 | function handleEnter() { |
---|
866 | replaceSelection("\n", "end"); |
---|
867 | if (options.enterMode != "flat") |
---|
868 | indentLine(sel.from.line, options.enterMode == "keep" ? "prev" : "smart"); |
---|
869 | } |
---|
870 | function handleTab(shift) { |
---|
871 | shiftSelecting = null; |
---|
872 | switch (options.tabMode) { |
---|
873 | case "default": |
---|
874 | return false; |
---|
875 | case "indent": |
---|
876 | for (var i = sel.from.line, e = sel.to.line; i <= e; ++i) indentLine(i, "smart"); |
---|
877 | break; |
---|
878 | case "classic": |
---|
879 | if (posEq(sel.from, sel.to)) { |
---|
880 | if (shift) indentLine(sel.from.line, "smart"); |
---|
881 | else replaceSelection("\t", "end"); |
---|
882 | break; |
---|
883 | } |
---|
884 | case "shift": |
---|
885 | for (var i = sel.from.line, e = sel.to.line; i <= e; ++i) indentLine(i, shift ? "subtract" : "add"); |
---|
886 | break; |
---|
887 | } |
---|
888 | return true; |
---|
889 | } |
---|
890 | |
---|
891 | function indentLine(n, how) { |
---|
892 | if (how == "smart") { |
---|
893 | if (!mode.indent) how = "prev"; |
---|
894 | else var state = getStateBefore(n); |
---|
895 | } |
---|
896 | |
---|
897 | var line = lines[n], curSpace = line.indentation(), curSpaceString = line.text.match(/^\s*/)[0], indentation; |
---|
898 | if (how == "prev") { |
---|
899 | if (n) indentation = lines[n-1].indentation(); |
---|
900 | else indentation = 0; |
---|
901 | } |
---|
902 | else if (how == "smart") indentation = mode.indent(state, line.text.slice(curSpaceString.length)); |
---|
903 | else if (how == "add") indentation = curSpace + options.indentUnit; |
---|
904 | else if (how == "subtract") indentation = curSpace - options.indentUnit; |
---|
905 | indentation = Math.max(0, indentation); |
---|
906 | var diff = indentation - curSpace; |
---|
907 | |
---|
908 | if (!diff) { |
---|
909 | if (sel.from.line != n && sel.to.line != n) return; |
---|
910 | var indentString = curSpaceString; |
---|
911 | } |
---|
912 | else { |
---|
913 | var indentString = "", pos = 0; |
---|
914 | if (options.indentWithTabs) |
---|
915 | for (var i = Math.floor(indentation / tabSize); i; --i) {pos += tabSize; indentString += "\t";} |
---|
916 | while (pos < indentation) {++pos; indentString += " ";} |
---|
917 | } |
---|
918 | |
---|
919 | replaceRange(indentString, {line: n, ch: 0}, {line: n, ch: curSpaceString.length}); |
---|
920 | } |
---|
921 | |
---|
922 | function loadMode() { |
---|
923 | mode = CodeMirror.getMode(options, options.mode); |
---|
924 | for (var i = 0, l = lines.length; i < l; ++i) |
---|
925 | lines[i].stateAfter = null; |
---|
926 | work = [0]; |
---|
927 | } |
---|
928 | function gutterChanged() { |
---|
929 | var visible = options.gutter || options.lineNumbers; |
---|
930 | gutter.style.display = visible ? "" : "none"; |
---|
931 | if (visible) updateGutter(); |
---|
932 | else lineDiv.parentNode.style.marginLeft = 0; |
---|
933 | } |
---|
934 | |
---|
935 | function markText(from, to, className) { |
---|
936 | from = clipPos(from); to = clipPos(to); |
---|
937 | var accum = []; |
---|
938 | function add(line, from, to, className) { |
---|
939 | var line = lines[line], mark = line.addMark(from, to, className); |
---|
940 | mark.line = line; |
---|
941 | accum.push(mark); |
---|
942 | } |
---|
943 | if (from.line == to.line) add(from.line, from.ch, to.ch, className); |
---|
944 | else { |
---|
945 | add(from.line, from.ch, null, className); |
---|
946 | for (var i = from.line + 1, e = to.line; i < e; ++i) |
---|
947 | add(i, 0, null, className); |
---|
948 | add(to.line, 0, to.ch, className); |
---|
949 | } |
---|
950 | changes.push({from: from.line, to: to.line + 1}); |
---|
951 | return function() { |
---|
952 | var start, end; |
---|
953 | for (var i = 0; i < accum.length; ++i) { |
---|
954 | var mark = accum[i], found = indexOf(lines, mark.line); |
---|
955 | mark.line.removeMark(mark); |
---|
956 | if (found > -1) { |
---|
957 | if (start == null) start = found; |
---|
958 | end = found; |
---|
959 | } |
---|
960 | } |
---|
961 | if (start != null) changes.push({from: start, to: end + 1}); |
---|
962 | }; |
---|
963 | } |
---|
964 | |
---|
965 | function addGutterMarker(line, text, className) { |
---|
966 | if (typeof line == "number") line = lines[clipLine(line)]; |
---|
967 | line.gutterMarker = {text: text, style: className}; |
---|
968 | updateGutter(); |
---|
969 | return line; |
---|
970 | } |
---|
971 | function removeGutterMarker(line) { |
---|
972 | if (typeof line == "number") line = lines[clipLine(line)]; |
---|
973 | line.gutterMarker = null; |
---|
974 | updateGutter(); |
---|
975 | } |
---|
976 | function setLineClass(line, className) { |
---|
977 | if (typeof line == "number") { |
---|
978 | var no = line; |
---|
979 | line = lines[clipLine(line)]; |
---|
980 | } |
---|
981 | else { |
---|
982 | var no = indexOf(lines, line); |
---|
983 | if (no == -1) return null; |
---|
984 | } |
---|
985 | line.className = className; |
---|
986 | changes.push({from: no, to: no + 1}); |
---|
987 | return line; |
---|
988 | } |
---|
989 | |
---|
990 | function lineInfo(line) { |
---|
991 | if (typeof line == "number") { |
---|
992 | var n = line; |
---|
993 | line = lines[line]; |
---|
994 | if (!line) return null; |
---|
995 | } |
---|
996 | else { |
---|
997 | var n = indexOf(lines, line); |
---|
998 | if (n == -1) return null; |
---|
999 | } |
---|
1000 | var marker = line.gutterMarker; |
---|
1001 | return {line: n, text: line.text, markerText: marker && marker.text, markerClass: marker && marker.style}; |
---|
1002 | } |
---|
1003 | |
---|
1004 | // These are used to go from pixel positions to character |
---|
1005 | // positions, taking tabs into account. |
---|
1006 | function charX(line, pos) { |
---|
1007 | var text = lines[line].text, span = measure.firstChild; |
---|
1008 | if (text.lastIndexOf("\t", pos) == -1) return pos * charWidth(); |
---|
1009 | var old = span.firstChild.nodeValue; |
---|
1010 | try { |
---|
1011 | span.firstChild.nodeValue = text.slice(0, pos); |
---|
1012 | return span.offsetWidth; |
---|
1013 | } finally {span.firstChild.nodeValue = old;} |
---|
1014 | } |
---|
1015 | function charFromX(line, x) { |
---|
1016 | var text = lines[line].text, cw = charWidth(); |
---|
1017 | if (x <= 0) return 0; |
---|
1018 | if (text.indexOf("\t") == -1) return Math.min(text.length, Math.round(x / cw)); |
---|
1019 | var mspan = measure.firstChild, mtext = mspan.firstChild, old = mtext.nodeValue; |
---|
1020 | try { |
---|
1021 | mtext.nodeValue = text; |
---|
1022 | var from = 0, fromX = 0, to = text.length, toX = mspan.offsetWidth; |
---|
1023 | if (x > toX) return to; |
---|
1024 | for (;;) { |
---|
1025 | if (to - from <= 1) return (toX - x > x - fromX) ? from : to; |
---|
1026 | var middle = Math.ceil((from + to) / 2); |
---|
1027 | mtext.nodeValue = text.slice(0, middle); |
---|
1028 | var curX = mspan.offsetWidth; |
---|
1029 | if (curX > x) {to = middle; toX = curX;} |
---|
1030 | else {from = middle; fromX = curX;} |
---|
1031 | } |
---|
1032 | } finally {mtext.nodeValue = old;} |
---|
1033 | } |
---|
1034 | |
---|
1035 | function localCoords(pos, inLineWrap) { |
---|
1036 | var lh = lineHeight(), line = pos.line - (inLineWrap ? showingFrom : 0); |
---|
1037 | return {x: charX(pos.line, pos.ch), y: line * lh, yBot: (line + 1) * lh}; |
---|
1038 | } |
---|
1039 | function pageCoords(pos) { |
---|
1040 | var local = localCoords(pos, true), off = eltOffset(lineSpace); |
---|
1041 | return {x: off.left + local.x, y: off.top + local.y, yBot: off.top + local.yBot}; |
---|
1042 | } |
---|
1043 | |
---|
1044 | function lineHeight() { |
---|
1045 | var nlines = lineDiv.childNodes.length; |
---|
1046 | if (nlines) return lineDiv.offsetHeight / nlines; |
---|
1047 | else return measure.firstChild.offsetHeight || 1; |
---|
1048 | } |
---|
1049 | function charWidth() {return (measure.firstChild.offsetWidth || 320) / 40;} |
---|
1050 | function paddingTop() {return lineSpace.offsetTop;} |
---|
1051 | function paddingLeft() {return lineSpace.offsetLeft;} |
---|
1052 | |
---|
1053 | function posFromMouse(e, liberal) { |
---|
1054 | var off = eltOffset(lineSpace), |
---|
1055 | x = e.pageX() - off.left, |
---|
1056 | y = e.pageY() - off.top; |
---|
1057 | if (!liberal && e.target() != lineSpace.parentNode && !(e.target() == wrapper && y > (lines.length * lineHeight()))) |
---|
1058 | for (var n = e.target(); n != lineDiv && n != cursor; n = n.parentNode) |
---|
1059 | if (!n || n == wrapper) return null; |
---|
1060 | var line = showingFrom + Math.floor(y / lineHeight()); |
---|
1061 | return clipPos({line: line, ch: charFromX(clipLine(line), x)}); |
---|
1062 | } |
---|
1063 | function onContextMenu(e) { |
---|
1064 | var pos = posFromMouse(e); |
---|
1065 | if (!pos || window.opera) return; // Opera is difficult. |
---|
1066 | if (posEq(sel.from, sel.to) || posLess(pos, sel.from) || !posLess(pos, sel.to)) |
---|
1067 | setCursor(pos.line, pos.ch); |
---|
1068 | |
---|
1069 | var oldCSS = input.style.cssText; |
---|
1070 | input.style.cssText = "position: fixed; width: 30px; height: 30px; top: " + (e.pageY() - 1) + |
---|
1071 | "px; left: " + (e.pageX() - 1) + "px; z-index: 1000; background: white; " + |
---|
1072 | "border-width: 0; outline: none; overflow: hidden;"; |
---|
1073 | var val = input.value = getSelection(); |
---|
1074 | input.focus(); |
---|
1075 | setSelRange(input, 0, val.length); |
---|
1076 | if (gecko) e.stop(); |
---|
1077 | leaveInputAlone = true; |
---|
1078 | setTimeout(function() { |
---|
1079 | if (input.value != val) operation(replaceSelection)(input.value, "end"); |
---|
1080 | input.style.cssText = oldCSS; |
---|
1081 | leaveInputAlone = false; |
---|
1082 | prepareInput(); |
---|
1083 | slowPoll(); |
---|
1084 | }, 50); |
---|
1085 | } |
---|
1086 | |
---|
1087 | // Cursor-blinking |
---|
1088 | function restartBlink() { |
---|
1089 | clearInterval(blinker); |
---|
1090 | var on = true; |
---|
1091 | cursor.style.visibility = ""; |
---|
1092 | blinker = setInterval(function() { |
---|
1093 | cursor.style.visibility = (on = !on) ? "" : "hidden"; |
---|
1094 | }, 650); |
---|
1095 | } |
---|
1096 | |
---|
1097 | var matching = {"(": ")>", ")": "(<", "[": "]>", "]": "[<", "{": "}>", "}": "{<"}; |
---|
1098 | function matchBrackets(autoclear) { |
---|
1099 | var head = sel.inverted ? sel.from : sel.to, line = lines[head.line], pos = head.ch - 1; |
---|
1100 | var match = (pos >= 0 && matching[line.text.charAt(pos)]) || matching[line.text.charAt(++pos)]; |
---|
1101 | if (!match) return; |
---|
1102 | var ch = match.charAt(0), forward = match.charAt(1) == ">", d = forward ? 1 : -1, st = line.styles; |
---|
1103 | for (var off = pos + 1, i = 0, e = st.length; i < e; i+=2) |
---|
1104 | if ((off -= st[i].length) <= 0) {var style = st[i+1]; break;} |
---|
1105 | |
---|
1106 | var stack = [line.text.charAt(pos)], re = /[(){}[\]]/; |
---|
1107 | function scan(line, from, to) { |
---|
1108 | if (!line.text) return; |
---|
1109 | var st = line.styles, pos = forward ? 0 : line.text.length - 1, cur; |
---|
1110 | for (var i = forward ? 0 : st.length - 2, e = forward ? st.length : -2; i != e; i += 2*d) { |
---|
1111 | var text = st[i]; |
---|
1112 | if (st[i+1] != null && st[i+1] != style) {pos += d * text.length; continue;} |
---|
1113 | for (var j = forward ? 0 : text.length - 1, te = forward ? text.length : -1; j != te; j += d, pos+=d) { |
---|
1114 | if (pos >= from && pos < to && re.test(cur = text.charAt(j))) { |
---|
1115 | var match = matching[cur]; |
---|
1116 | if (match.charAt(1) == ">" == forward) stack.push(cur); |
---|
1117 | else if (stack.pop() != match.charAt(0)) return {pos: pos, match: false}; |
---|
1118 | else if (!stack.length) return {pos: pos, match: true}; |
---|
1119 | } |
---|
1120 | } |
---|
1121 | } |
---|
1122 | } |
---|
1123 | for (var i = head.line, e = forward ? Math.min(i + 50, lines.length) : Math.max(0, i - 50); i != e; i+=d) { |
---|
1124 | var line = lines[i], first = i == head.line; |
---|
1125 | var found = scan(line, first && forward ? pos + 1 : 0, first && !forward ? pos : line.text.length); |
---|
1126 | if (found) { |
---|
1127 | var style = found.match ? "CodeMirror-matchingbracket" : "CodeMirror-nonmatchingbracket"; |
---|
1128 | var one = markText({line: head.line, ch: pos}, {line: head.line, ch: pos+1}, style), |
---|
1129 | two = markText({line: i, ch: found.pos}, {line: i, ch: found.pos + 1}, style); |
---|
1130 | var clear = operation(function(){one(); two();}); |
---|
1131 | if (autoclear) setTimeout(clear, 800); |
---|
1132 | else bracketHighlighted = clear; |
---|
1133 | break; |
---|
1134 | } |
---|
1135 | } |
---|
1136 | } |
---|
1137 | |
---|
1138 | // Finds the line to start with when starting a parse. Tries to |
---|
1139 | // find a line with a stateAfter, so that it can start with a |
---|
1140 | // valid state. If that fails, it returns the line with the |
---|
1141 | // smallest indentation, which tends to need the least context to |
---|
1142 | // parse correctly. |
---|
1143 | function findStartLine(n) { |
---|
1144 | var minindent, minline; |
---|
1145 | for (var search = n, lim = n - 40; search > lim; --search) { |
---|
1146 | if (search == 0) return 0; |
---|
1147 | var line = lines[search-1]; |
---|
1148 | if (line.stateAfter) return search; |
---|
1149 | var indented = line.indentation(); |
---|
1150 | if (minline == null || minindent > indented) { |
---|
1151 | minline = search; |
---|
1152 | minindent = indented; |
---|
1153 | } |
---|
1154 | } |
---|
1155 | return minline; |
---|
1156 | } |
---|
1157 | function getStateBefore(n) { |
---|
1158 | var start = findStartLine(n), state = start && lines[start-1].stateAfter; |
---|
1159 | if (!state) state = startState(mode); |
---|
1160 | else state = copyState(mode, state); |
---|
1161 | for (var i = start; i < n; ++i) { |
---|
1162 | var line = lines[i]; |
---|
1163 | line.highlight(mode, state); |
---|
1164 | line.stateAfter = copyState(mode, state); |
---|
1165 | } |
---|
1166 | if (!lines[n].stateAfter) work.push(n); |
---|
1167 | return state; |
---|
1168 | } |
---|
1169 | function highlightWorker() { |
---|
1170 | var end = +new Date + options.workTime; |
---|
1171 | while (work.length) { |
---|
1172 | if (!lines[showingFrom].stateAfter) var task = showingFrom; |
---|
1173 | else var task = work.pop(); |
---|
1174 | if (task >= lines.length) continue; |
---|
1175 | var start = findStartLine(task), state = start && lines[start-1].stateAfter; |
---|
1176 | if (state) state = copyState(mode, state); |
---|
1177 | else state = startState(mode); |
---|
1178 | |
---|
1179 | for (var i = start, l = lines.length; i < l; ++i) { |
---|
1180 | var line = lines[i], hadState = line.stateAfter; |
---|
1181 | if (+new Date > end) { |
---|
1182 | work.push(i); |
---|
1183 | startWorker(options.workDelay); |
---|
1184 | changes.push({from: task, to: i}); |
---|
1185 | return; |
---|
1186 | } |
---|
1187 | var changed = line.highlight(mode, state); |
---|
1188 | line.stateAfter = copyState(mode, state); |
---|
1189 | if (hadState && !changed && line.text) break; |
---|
1190 | } |
---|
1191 | changes.push({from: task, to: i}); |
---|
1192 | } |
---|
1193 | } |
---|
1194 | function startWorker(time) { |
---|
1195 | if (!work.length) return; |
---|
1196 | highlight.set(time, operation(highlightWorker)); |
---|
1197 | } |
---|
1198 | |
---|
1199 | // Operations are used to wrap changes in such a way that each |
---|
1200 | // change won't have to update the cursor and display (which would |
---|
1201 | // be awkward, slow, and error-prone), but instead updates are |
---|
1202 | // batched and then all combined and executed at once. |
---|
1203 | function startOperation() { |
---|
1204 | updateInput = null; changes = []; textChanged = selectionChanged = false; |
---|
1205 | } |
---|
1206 | function endOperation() { |
---|
1207 | var reScroll = false; |
---|
1208 | if (selectionChanged) reScroll = !scrollCursorIntoView(); |
---|
1209 | if (changes.length) updateDisplay(changes); |
---|
1210 | else if (selectionChanged) updateCursor(); |
---|
1211 | if (reScroll) scrollCursorIntoView(); |
---|
1212 | if (selectionChanged) restartBlink(); |
---|
1213 | |
---|
1214 | // updateInput can be set to a boolean value to force/prevent an |
---|
1215 | // update. |
---|
1216 | if (!leaveInputAlone && (updateInput === true || (updateInput !== false && selectionChanged))) |
---|
1217 | prepareInput(); |
---|
1218 | |
---|
1219 | if (selectionChanged && options.onCursorActivity) |
---|
1220 | options.onCursorActivity(instance); |
---|
1221 | if (textChanged && options.onChange) |
---|
1222 | options.onChange(instance); |
---|
1223 | if (selectionChanged && options.matchBrackets) |
---|
1224 | setTimeout(operation(function() { |
---|
1225 | if (bracketHighlighted) {bracketHighlighted(); bracketHighlighted = null;} |
---|
1226 | matchBrackets(false); |
---|
1227 | }), 20); |
---|
1228 | } |
---|
1229 | var nestedOperation = 0; |
---|
1230 | function operation(f) { |
---|
1231 | return function() { |
---|
1232 | if (!nestedOperation++) startOperation(); |
---|
1233 | try {var result = f.apply(this, arguments);} |
---|
1234 | finally {if (!--nestedOperation) endOperation();} |
---|
1235 | return result; |
---|
1236 | }; |
---|
1237 | } |
---|
1238 | |
---|
1239 | function SearchCursor(query, pos, caseFold) { |
---|
1240 | this.atOccurrence = false; |
---|
1241 | if (caseFold == null) caseFold = typeof query == "string" && query == query.toLowerCase(); |
---|
1242 | |
---|
1243 | if (pos && typeof pos == "object") pos = clipPos(pos); |
---|
1244 | else pos = {line: 0, ch: 0}; |
---|
1245 | this.pos = {from: pos, to: pos}; |
---|
1246 | |
---|
1247 | // The matches method is filled in based on the type of query. |
---|
1248 | // It takes a position and a direction, and returns an object |
---|
1249 | // describing the next occurrence of the query, or null if no |
---|
1250 | // more matches were found. |
---|
1251 | if (typeof query != "string") // Regexp match |
---|
1252 | this.matches = function(reverse, pos) { |
---|
1253 | if (reverse) { |
---|
1254 | var line = lines[pos.line].text.slice(0, pos.ch), match = line.match(query), start = 0; |
---|
1255 | while (match) { |
---|
1256 | var ind = line.indexOf(match[0]); |
---|
1257 | start += ind; |
---|
1258 | line = line.slice(ind + 1); |
---|
1259 | var newmatch = line.match(query); |
---|
1260 | if (newmatch) match = newmatch; |
---|
1261 | else break; |
---|
1262 | } |
---|
1263 | } |
---|
1264 | else { |
---|
1265 | var line = lines[pos.line].text.slice(pos.ch), match = line.match(query), |
---|
1266 | start = match && pos.ch + line.indexOf(match[0]); |
---|
1267 | } |
---|
1268 | if (match) |
---|
1269 | return {from: {line: pos.line, ch: start}, |
---|
1270 | to: {line: pos.line, ch: start + match[0].length}, |
---|
1271 | match: match}; |
---|
1272 | }; |
---|
1273 | else { // String query |
---|
1274 | if (caseFold) query = query.toLowerCase(); |
---|
1275 | var fold = caseFold ? function(str){return str.toLowerCase();} : function(str){return str;}; |
---|
1276 | var target = query.split("\n"); |
---|
1277 | // Different methods for single-line and multi-line queries |
---|
1278 | if (target.length == 1) |
---|
1279 | this.matches = function(reverse, pos) { |
---|
1280 | var line = fold(lines[pos.line].text), len = query.length, match; |
---|
1281 | if (reverse ? (pos.ch >= len && (match = line.lastIndexOf(query, pos.ch - len)) != -1) |
---|
1282 | : (match = line.indexOf(query, pos.ch)) != -1) |
---|
1283 | return {from: {line: pos.line, ch: match}, |
---|
1284 | to: {line: pos.line, ch: match + len}}; |
---|
1285 | }; |
---|
1286 | else |
---|
1287 | this.matches = function(reverse, pos) { |
---|
1288 | var ln = pos.line, idx = (reverse ? target.length - 1 : 0), match = target[idx], line = fold(lines[ln].text); |
---|
1289 | var offsetA = (reverse ? line.indexOf(match) + match.length : line.lastIndexOf(match)); |
---|
1290 | if (reverse ? offsetA >= pos.ch || offsetA != match.length |
---|
1291 | : offsetA <= pos.ch || offsetA != line.length - match.length) |
---|
1292 | return; |
---|
1293 | for (;;) { |
---|
1294 | if (reverse ? !ln : ln == lines.length - 1) return; |
---|
1295 | line = fold(lines[ln += reverse ? -1 : 1].text); |
---|
1296 | match = target[reverse ? --idx : ++idx]; |
---|
1297 | if (idx > 0 && idx < target.length - 1) { |
---|
1298 | if (line != match) return; |
---|
1299 | else continue; |
---|
1300 | } |
---|
1301 | var offsetB = (reverse ? line.lastIndexOf(match) : line.indexOf(match) + match.length); |
---|
1302 | if (reverse ? offsetB != line.length - match.length : offsetB != match.length) |
---|
1303 | return; |
---|
1304 | var start = {line: pos.line, ch: offsetA}, end = {line: ln, ch: offsetB}; |
---|
1305 | return {from: reverse ? end : start, to: reverse ? start : end}; |
---|
1306 | } |
---|
1307 | }; |
---|
1308 | } |
---|
1309 | } |
---|
1310 | |
---|
1311 | SearchCursor.prototype = { |
---|
1312 | findNext: function() {return this.find(false);}, |
---|
1313 | findPrevious: function() {return this.find(true);}, |
---|
1314 | |
---|
1315 | find: function(reverse) { |
---|
1316 | var self = this, pos = clipPos(reverse ? this.pos.from : this.pos.to); |
---|
1317 | function savePosAndFail(line) { |
---|
1318 | var pos = {line: line, ch: 0}; |
---|
1319 | self.pos = {from: pos, to: pos}; |
---|
1320 | self.atOccurrence = false; |
---|
1321 | return false; |
---|
1322 | } |
---|
1323 | |
---|
1324 | for (;;) { |
---|
1325 | if (this.pos = this.matches(reverse, pos)) { |
---|
1326 | this.atOccurrence = true; |
---|
1327 | return this.pos.match || true; |
---|
1328 | } |
---|
1329 | if (reverse) { |
---|
1330 | if (!pos.line) return savePosAndFail(0); |
---|
1331 | pos = {line: pos.line-1, ch: lines[pos.line-1].text.length}; |
---|
1332 | } |
---|
1333 | else { |
---|
1334 | if (pos.line == lines.length - 1) return savePosAndFail(lines.length); |
---|
1335 | pos = {line: pos.line+1, ch: 0}; |
---|
1336 | } |
---|
1337 | } |
---|
1338 | }, |
---|
1339 | |
---|
1340 | from: function() {if (this.atOccurrence) return copyPos(this.pos.from);}, |
---|
1341 | to: function() {if (this.atOccurrence) return copyPos(this.pos.to);} |
---|
1342 | }; |
---|
1343 | |
---|
1344 | return instance; |
---|
1345 | } // (end of function CodeMirror) |
---|
1346 | |
---|
1347 | // The default configuration options. |
---|
1348 | CodeMirror.defaults = { |
---|
1349 | value: "", |
---|
1350 | mode: null, |
---|
1351 | indentUnit: 2, |
---|
1352 | indentWithTabs: false, |
---|
1353 | tabMode: "classic", |
---|
1354 | enterMode: "indent", |
---|
1355 | electricChars: true, |
---|
1356 | onKeyEvent: null, |
---|
1357 | lineNumbers: false, |
---|
1358 | gutter: false, |
---|
1359 | firstLineNumber: 1, |
---|
1360 | readOnly: false, |
---|
1361 | onChange: null, |
---|
1362 | onCursorActivity: null, |
---|
1363 | onGutterClick: null, |
---|
1364 | onFocus: null, onBlur: null, onScroll: null, |
---|
1365 | matchBrackets: false, |
---|
1366 | workTime: 100, |
---|
1367 | workDelay: 200, |
---|
1368 | undoDepth: 40, |
---|
1369 | tabindex: null |
---|
1370 | }; |
---|
1371 | |
---|
1372 | // Known modes, by name and by MIME |
---|
1373 | var modes = {}, mimeModes = {}; |
---|
1374 | CodeMirror.defineMode = function(name, mode) { |
---|
1375 | if (!CodeMirror.defaults.mode && name != "null") CodeMirror.defaults.mode = name; |
---|
1376 | modes[name] = mode; |
---|
1377 | }; |
---|
1378 | CodeMirror.defineMIME = function(mime, spec) { |
---|
1379 | mimeModes[mime] = spec; |
---|
1380 | }; |
---|
1381 | CodeMirror.getMode = function(options, spec) { |
---|
1382 | if (typeof spec == "string" && mimeModes.hasOwnProperty(spec)) |
---|
1383 | spec = mimeModes[spec]; |
---|
1384 | if (typeof spec == "string") |
---|
1385 | var mname = spec, config = {}; |
---|
1386 | else |
---|
1387 | var mname = spec.name, config = spec; |
---|
1388 | var mfactory = modes[mname]; |
---|
1389 | if (!mfactory) { |
---|
1390 | if (window.console) console.warn("No mode " + mname + " found, falling back to plain text."); |
---|
1391 | return CodeMirror.getMode(options, "text/plain"); |
---|
1392 | } |
---|
1393 | return mfactory(options, config); |
---|
1394 | } |
---|
1395 | CodeMirror.listModes = function() { |
---|
1396 | var list = []; |
---|
1397 | for (var m in modes) |
---|
1398 | if (modes.propertyIsEnumerable(m)) list.push(m); |
---|
1399 | return list; |
---|
1400 | }; |
---|
1401 | CodeMirror.listMIMEs = function() { |
---|
1402 | var list = []; |
---|
1403 | for (var m in mimeModes) |
---|
1404 | if (mimeModes.propertyIsEnumerable(m)) list.push(m); |
---|
1405 | return list; |
---|
1406 | }; |
---|
1407 | |
---|
1408 | CodeMirror.fromTextArea = function(textarea, options) { |
---|
1409 | if (!options) options = {}; |
---|
1410 | options.value = textarea.value; |
---|
1411 | if (!options.tabindex && textarea.tabindex) |
---|
1412 | options.tabindex = textarea.tabindex; |
---|
1413 | |
---|
1414 | function save() {textarea.value = instance.getValue();} |
---|
1415 | if (textarea.form) { |
---|
1416 | // Deplorable hack to make the submit method do the right thing. |
---|
1417 | var rmSubmit = connect(textarea.form, "submit", save, true); |
---|
1418 | if (typeof textarea.form.submit == "function") { |
---|
1419 | var realSubmit = textarea.form.submit; |
---|
1420 | function wrappedSubmit() { |
---|
1421 | save(); |
---|
1422 | textarea.form.submit = realSubmit; |
---|
1423 | textarea.form.submit(); |
---|
1424 | textarea.form.submit = wrappedSubmit; |
---|
1425 | } |
---|
1426 | textarea.form.submit = wrappedSubmit; |
---|
1427 | } |
---|
1428 | } |
---|
1429 | |
---|
1430 | textarea.style.display = "none"; |
---|
1431 | var instance = CodeMirror(function(node) { |
---|
1432 | textarea.parentNode.insertBefore(node, textarea.nextSibling); |
---|
1433 | }, options); |
---|
1434 | instance.save = save; |
---|
1435 | instance.toTextArea = function() { |
---|
1436 | save(); |
---|
1437 | textarea.parentNode.removeChild(instance.getWrapperElement()); |
---|
1438 | textarea.style.display = ""; |
---|
1439 | if (textarea.form) { |
---|
1440 | rmSubmit(); |
---|
1441 | if (typeof textarea.form.submit == "function") |
---|
1442 | textarea.form.submit = realSubmit; |
---|
1443 | } |
---|
1444 | }; |
---|
1445 | return instance; |
---|
1446 | }; |
---|
1447 | |
---|
1448 | // Utility functions for working with state. Exported because modes |
---|
1449 | // sometimes need to do this. |
---|
1450 | function copyState(mode, state) { |
---|
1451 | if (state === true) return state; |
---|
1452 | if (mode.copyState) return mode.copyState(state); |
---|
1453 | var nstate = {}; |
---|
1454 | for (var n in state) { |
---|
1455 | var val = state[n]; |
---|
1456 | if (val instanceof Array) val = val.concat([]); |
---|
1457 | nstate[n] = val; |
---|
1458 | } |
---|
1459 | return nstate; |
---|
1460 | } |
---|
1461 | CodeMirror.startState = startState; |
---|
1462 | function startState(mode, a1, a2) { |
---|
1463 | return mode.startState ? mode.startState(a1, a2) : true; |
---|
1464 | } |
---|
1465 | CodeMirror.copyState = copyState; |
---|
1466 | |
---|
1467 | // The character stream used by a mode's parser. |
---|
1468 | function StringStream(string) { |
---|
1469 | this.pos = this.start = 0; |
---|
1470 | this.string = string; |
---|
1471 | } |
---|
1472 | StringStream.prototype = { |
---|
1473 | eol: function() {return this.pos >= this.string.length;}, |
---|
1474 | sol: function() {return this.pos == 0;}, |
---|
1475 | peek: function() {return this.string.charAt(this.pos);}, |
---|
1476 | next: function() { |
---|
1477 | if (this.pos < this.string.length) |
---|
1478 | return this.string.charAt(this.pos++); |
---|
1479 | }, |
---|
1480 | eat: function(match) { |
---|
1481 | var ch = this.string.charAt(this.pos); |
---|
1482 | if (typeof match == "string") var ok = ch == match; |
---|
1483 | else var ok = ch && (match.test ? match.test(ch) : match(ch)); |
---|
1484 | if (ok) {++this.pos; return ch;} |
---|
1485 | }, |
---|
1486 | eatWhile: function(match) { |
---|
1487 | var start = this.start; |
---|
1488 | while (this.eat(match)){} |
---|
1489 | return this.pos > start; |
---|
1490 | }, |
---|
1491 | eatSpace: function() { |
---|
1492 | var start = this.pos; |
---|
1493 | while (/[\s\u00a0]/.test(this.string.charAt(this.pos))) ++this.pos; |
---|
1494 | return this.pos > start; |
---|
1495 | }, |
---|
1496 | skipToEnd: function() {this.pos = this.string.length;}, |
---|
1497 | skipTo: function(ch) { |
---|
1498 | var found = this.string.indexOf(ch, this.pos); |
---|
1499 | if (found > -1) {this.pos = found; return true;} |
---|
1500 | }, |
---|
1501 | backUp: function(n) {this.pos -= n;}, |
---|
1502 | column: function() {return countColumn(this.string, this.start);}, |
---|
1503 | indentation: function() {return countColumn(this.string);}, |
---|
1504 | match: function(pattern, consume, caseInsensitive) { |
---|
1505 | if (typeof pattern == "string") { |
---|
1506 | function cased(str) {return caseInsensitive ? str.toLowerCase() : str;} |
---|
1507 | if (cased(this.string).indexOf(cased(pattern), this.pos) == this.pos) { |
---|
1508 | if (consume !== false) this.pos += pattern.length; |
---|
1509 | return true; |
---|
1510 | } |
---|
1511 | } |
---|
1512 | else { |
---|
1513 | var match = this.string.slice(this.pos).match(pattern); |
---|
1514 | if (match && consume !== false) this.pos += match[0].length; |
---|
1515 | return match; |
---|
1516 | } |
---|
1517 | }, |
---|
1518 | current: function(){return this.string.slice(this.start, this.pos);} |
---|
1519 | }; |
---|
1520 | |
---|
1521 | // Line objects. These hold state related to a line, including |
---|
1522 | // highlighting info (the styles array). |
---|
1523 | function Line(text, styles) { |
---|
1524 | this.styles = styles || [text, null]; |
---|
1525 | this.stateAfter = null; |
---|
1526 | this.text = text; |
---|
1527 | this.marked = this.gutterMarker = this.className = null; |
---|
1528 | } |
---|
1529 | Line.prototype = { |
---|
1530 | // Replace a piece of a line, keeping the styles around it intact. |
---|
1531 | replace: function(from, to, text) { |
---|
1532 | var st = [], mk = this.marked; |
---|
1533 | copyStyles(0, from, this.styles, st); |
---|
1534 | if (text) st.push(text, null); |
---|
1535 | copyStyles(to, this.text.length, this.styles, st); |
---|
1536 | this.styles = st; |
---|
1537 | this.text = this.text.slice(0, from) + text + this.text.slice(to); |
---|
1538 | this.stateAfter = null; |
---|
1539 | if (mk) { |
---|
1540 | var diff = text.length - (to - from), end = this.text.length; |
---|
1541 | function fix(n) {return n <= Math.min(to, to + diff) ? n : n + diff;} |
---|
1542 | for (var i = 0; i < mk.length; ++i) { |
---|
1543 | var mark = mk[i], del = false; |
---|
1544 | if (mark.from >= end) del = true; |
---|
1545 | else {mark.from = fix(mark.from); if (mark.to != null) mark.to = fix(mark.to);} |
---|
1546 | if (del || mark.from >= mark.to) {mk.splice(i, 1); i--;} |
---|
1547 | } |
---|
1548 | } |
---|
1549 | }, |
---|
1550 | // Split a line in two, again keeping styles intact. |
---|
1551 | split: function(pos, textBefore) { |
---|
1552 | var st = [textBefore, null]; |
---|
1553 | copyStyles(pos, this.text.length, this.styles, st); |
---|
1554 | return new Line(textBefore + this.text.slice(pos), st); |
---|
1555 | }, |
---|
1556 | addMark: function(from, to, style) { |
---|
1557 | var mk = this.marked, mark = {from: from, to: to, style: style}; |
---|
1558 | if (this.marked == null) this.marked = []; |
---|
1559 | this.marked.push(mark); |
---|
1560 | this.marked.sort(function(a, b){return a.from - b.from;}); |
---|
1561 | return mark; |
---|
1562 | }, |
---|
1563 | removeMark: function(mark) { |
---|
1564 | var mk = this.marked; |
---|
1565 | if (!mk) return; |
---|
1566 | for (var i = 0; i < mk.length; ++i) |
---|
1567 | if (mk[i] == mark) {mk.splice(i, 1); break;} |
---|
1568 | }, |
---|
1569 | // Run the given mode's parser over a line, update the styles |
---|
1570 | // array, which contains alternating fragments of text and CSS |
---|
1571 | // classes. |
---|
1572 | highlight: function(mode, state) { |
---|
1573 | var stream = new StringStream(this.text), st = this.styles, pos = 0, changed = false; |
---|
1574 | while (!stream.eol()) { |
---|
1575 | var style = mode.token(stream, state); |
---|
1576 | var substr = this.text.slice(stream.start, stream.pos); |
---|
1577 | stream.start = stream.pos; |
---|
1578 | if (pos && st[pos-1] == style) |
---|
1579 | st[pos-2] += substr; |
---|
1580 | else if (substr) { |
---|
1581 | if (!changed && st[pos] != substr || st[pos+1] != style) changed = true; |
---|
1582 | st[pos++] = substr; st[pos++] = style; |
---|
1583 | } |
---|
1584 | // Give up when line is ridiculously long |
---|
1585 | if (stream.pos > 5000) { |
---|
1586 | st[pos++] = this.text.slice(stream.pos); st[pos++] = null; |
---|
1587 | break; |
---|
1588 | } |
---|
1589 | } |
---|
1590 | if (st.length != pos) {st.length = pos; changed = true;} |
---|
1591 | return changed; |
---|
1592 | }, |
---|
1593 | // Fetch the parser token for a given character. Useful for hacks |
---|
1594 | // that want to inspect the mode state (say, for completion). |
---|
1595 | getTokenAt: function(mode, state, ch) { |
---|
1596 | var txt = this.text, stream = new StringStream(txt); |
---|
1597 | while (stream.pos < ch && !stream.eol()) { |
---|
1598 | stream.start = stream.pos; |
---|
1599 | var style = mode.token(stream, state); |
---|
1600 | } |
---|
1601 | return {start: stream.start, |
---|
1602 | end: stream.pos, |
---|
1603 | string: stream.current(), |
---|
1604 | className: style || null, |
---|
1605 | state: state}; |
---|
1606 | }, |
---|
1607 | indentation: function() {return countColumn(this.text);}, |
---|
1608 | // Produces an HTML fragment for the line, taking selection, |
---|
1609 | // marking, and highlighting into account. |
---|
1610 | getHTML: function(sfrom, sto, includePre) { |
---|
1611 | var html = []; |
---|
1612 | if (includePre) |
---|
1613 | html.push(this.className ? '<pre class="' + this.className + '">': "<pre>"); |
---|
1614 | function span(text, style) { |
---|
1615 | if (!text) return; |
---|
1616 | if (style) html.push('<span class="', style, '">', htmlEscape(text), "</span>"); |
---|
1617 | else html.push(htmlEscape(text)); |
---|
1618 | } |
---|
1619 | var st = this.styles, allText = this.text, marked = this.marked; |
---|
1620 | if (sfrom == sto) sfrom = null; |
---|
1621 | |
---|
1622 | if (!allText) |
---|
1623 | span(" ", sfrom != null && sto == null ? "CodeMirror-selected" : null); |
---|
1624 | else if (!marked && sfrom == null) |
---|
1625 | for (var i = 0, e = st.length; i < e; i+=2) span(st[i], st[i+1]); |
---|
1626 | else { |
---|
1627 | var pos = 0, i = 0, text = "", style, sg = 0; |
---|
1628 | var markpos = -1, mark = null; |
---|
1629 | function nextMark() { |
---|
1630 | if (marked) { |
---|
1631 | markpos += 1; |
---|
1632 | mark = (markpos < marked.length) ? marked[markpos] : null; |
---|
1633 | } |
---|
1634 | } |
---|
1635 | nextMark(); |
---|
1636 | while (pos < allText.length) { |
---|
1637 | var upto = allText.length; |
---|
1638 | var extraStyle = ""; |
---|
1639 | if (sfrom != null) { |
---|
1640 | if (sfrom > pos) upto = sfrom; |
---|
1641 | else if (sto == null || sto > pos) { |
---|
1642 | extraStyle = " CodeMirror-selected"; |
---|
1643 | if (sto != null) upto = Math.min(upto, sto); |
---|
1644 | } |
---|
1645 | } |
---|
1646 | while (mark && mark.to != null && mark.to <= pos) nextMark(); |
---|
1647 | if (mark) { |
---|
1648 | if (mark.from > pos) upto = Math.min(upto, mark.from); |
---|
1649 | else { |
---|
1650 | extraStyle += " " + mark.style; |
---|
1651 | if (mark.to != null) upto = Math.min(upto, mark.to); |
---|
1652 | } |
---|
1653 | } |
---|
1654 | for (;;) { |
---|
1655 | var end = pos + text.length; |
---|
1656 | var apliedStyle = style; |
---|
1657 | if (extraStyle) apliedStyle = style ? style + extraStyle : extraStyle; |
---|
1658 | span(end > upto ? text.slice(0, upto - pos) : text, apliedStyle); |
---|
1659 | if (end >= upto) {text = text.slice(upto - pos); pos = upto; break;} |
---|
1660 | pos = end; |
---|
1661 | text = st[i++]; style = st[i++]; |
---|
1662 | } |
---|
1663 | } |
---|
1664 | if (sfrom != null && sto == null) span(" ", "CodeMirror-selected"); |
---|
1665 | } |
---|
1666 | if (includePre) html.push("</pre>"); |
---|
1667 | return html.join(""); |
---|
1668 | } |
---|
1669 | }; |
---|
1670 | // Utility used by replace and split above |
---|
1671 | function copyStyles(from, to, source, dest) { |
---|
1672 | for (var i = 0, pos = 0, state = 0; pos < to; i+=2) { |
---|
1673 | var part = source[i], end = pos + part.length; |
---|
1674 | if (state == 0) { |
---|
1675 | if (end > from) dest.push(part.slice(from - pos, Math.min(part.length, to - pos)), source[i+1]); |
---|
1676 | if (end >= from) state = 1; |
---|
1677 | } |
---|
1678 | else if (state == 1) { |
---|
1679 | if (end > to) dest.push(part.slice(0, to - pos), source[i+1]); |
---|
1680 | else dest.push(part, source[i+1]); |
---|
1681 | } |
---|
1682 | pos = end; |
---|
1683 | } |
---|
1684 | } |
---|
1685 | |
---|
1686 | // The history object 'chunks' changes that are made close together |
---|
1687 | // and at almost the same time into bigger undoable units. |
---|
1688 | function History() { |
---|
1689 | this.time = 0; |
---|
1690 | this.done = []; this.undone = []; |
---|
1691 | } |
---|
1692 | History.prototype = { |
---|
1693 | addChange: function(start, added, old) { |
---|
1694 | this.undone.length = 0; |
---|
1695 | var time = +new Date, last = this.done[this.done.length - 1]; |
---|
1696 | if (time - this.time > 400 || !last || |
---|
1697 | last.start > start + added || last.start + last.added < start - last.added + last.old.length) |
---|
1698 | this.done.push({start: start, added: added, old: old}); |
---|
1699 | else { |
---|
1700 | var oldoff = 0; |
---|
1701 | if (start < last.start) { |
---|
1702 | for (var i = last.start - start - 1; i >= 0; --i) |
---|
1703 | last.old.unshift(old[i]); |
---|
1704 | last.added += last.start - start; |
---|
1705 | last.start = start; |
---|
1706 | } |
---|
1707 | else if (last.start < start) { |
---|
1708 | oldoff = start - last.start; |
---|
1709 | added += oldoff; |
---|
1710 | } |
---|
1711 | for (var i = last.added - oldoff, e = old.length; i < e; ++i) |
---|
1712 | last.old.push(old[i]); |
---|
1713 | if (last.added < added) last.added = added; |
---|
1714 | } |
---|
1715 | this.time = time; |
---|
1716 | } |
---|
1717 | }; |
---|
1718 | |
---|
1719 | // Event stopping compatibility wrapper. |
---|
1720 | function stopEvent() { |
---|
1721 | if (this.preventDefault) {this.preventDefault(); this.stopPropagation();} |
---|
1722 | else {this.returnValue = false; this.cancelBubble = true;} |
---|
1723 | } |
---|
1724 | // Ensure an event has a stop method. |
---|
1725 | function addStop(event) { |
---|
1726 | if (!event.stop) event.stop = stopEvent; |
---|
1727 | return event; |
---|
1728 | } |
---|
1729 | |
---|
1730 | // Event wrapper, exposing the few operations we need. |
---|
1731 | function Event(orig) {this.e = orig;} |
---|
1732 | Event.prototype = { |
---|
1733 | stop: function() {stopEvent.call(this.e);}, |
---|
1734 | target: function() {return this.e.target || this.e.srcElement;}, |
---|
1735 | button: function() { |
---|
1736 | if (this.e.which) return this.e.which; |
---|
1737 | else if (this.e.button & 1) return 1; |
---|
1738 | else if (this.e.button & 2) return 3; |
---|
1739 | else if (this.e.button & 4) return 2; |
---|
1740 | }, |
---|
1741 | pageX: function() { |
---|
1742 | if (this.e.pageX != null) return this.e.pageX; |
---|
1743 | else return this.e.clientX + document.body.scrollLeft + document.documentElement.scrollLeft; |
---|
1744 | }, |
---|
1745 | pageY: function() { |
---|
1746 | if (this.e.pageY != null) return this.e.pageY; |
---|
1747 | else return this.e.clientY + document.body.scrollTop + document.documentElement.scrollTop; |
---|
1748 | } |
---|
1749 | }; |
---|
1750 | |
---|
1751 | // Event handler registration. If disconnect is true, it'll return a |
---|
1752 | // function that unregisters the handler. |
---|
1753 | function connect(node, type, handler, disconnect) { |
---|
1754 | function wrapHandler(event) {handler(new Event(event || window.event));} |
---|
1755 | if (typeof node.addEventListener == "function") { |
---|
1756 | node.addEventListener(type, wrapHandler, false); |
---|
1757 | if (disconnect) return function() {node.removeEventListener(type, wrapHandler, false);}; |
---|
1758 | } |
---|
1759 | else { |
---|
1760 | node.attachEvent("on" + type, wrapHandler); |
---|
1761 | if (disconnect) return function() {node.detachEvent("on" + type, wrapHandler);}; |
---|
1762 | } |
---|
1763 | } |
---|
1764 | |
---|
1765 | function Delayed() {this.id = null;} |
---|
1766 | Delayed.prototype = {set: function(ms, f) {clearTimeout(this.id); this.id = setTimeout(f, ms);}}; |
---|
1767 | |
---|
1768 | // Some IE versions don't preserve whitespace when setting the |
---|
1769 | // innerHTML of a PRE tag. |
---|
1770 | var badInnerHTML = (function() { |
---|
1771 | var pre = document.createElement("pre"); |
---|
1772 | pre.innerHTML = " "; return !pre.innerHTML; |
---|
1773 | })(); |
---|
1774 | |
---|
1775 | var gecko = /gecko\/\d{7}/i.test(navigator.userAgent); |
---|
1776 | |
---|
1777 | var lineSep = "\n"; |
---|
1778 | // Feature-detect whether newlines in textareas are converted to \r\n |
---|
1779 | (function () { |
---|
1780 | var te = document.createElement("textarea"); |
---|
1781 | te.value = "foo\nbar"; |
---|
1782 | if (te.value.indexOf("\r") > -1) lineSep = "\r\n"; |
---|
1783 | }()); |
---|
1784 | |
---|
1785 | var tabSize = 8; |
---|
1786 | var mac = /Mac/.test(navigator.platform); |
---|
1787 | var movementKeys = {}; |
---|
1788 | for (var i = 35; i <= 40; ++i) |
---|
1789 | movementKeys[i] = movementKeys["c" + i] = true; |
---|
1790 | |
---|
1791 | // Counts the column offset in a string, taking tabs into account. |
---|
1792 | // Used mostly to find indentation. |
---|
1793 | function countColumn(string, end) { |
---|
1794 | if (end == null) { |
---|
1795 | end = string.search(/[^\s\u00a0]/); |
---|
1796 | if (end == -1) end = string.length; |
---|
1797 | } |
---|
1798 | for (var i = 0, n = 0; i < end; ++i) { |
---|
1799 | if (string.charAt(i) == "\t") n += tabSize - (n % tabSize); |
---|
1800 | else ++n; |
---|
1801 | } |
---|
1802 | return n; |
---|
1803 | } |
---|
1804 | |
---|
1805 | // Find the position of an element by following the offsetParent chain. |
---|
1806 | function eltOffset(node) { |
---|
1807 | var x = 0, y = 0, n2 = node; |
---|
1808 | for (var n = node; n; n = n.offsetParent) {x += n.offsetLeft; y += n.offsetTop;} |
---|
1809 | for (var n = node; n != document.body; n = n.parentNode) {x -= n.scrollLeft; y -= n.scrollTop;} |
---|
1810 | return {left: x, top: y}; |
---|
1811 | } |
---|
1812 | // Get a node's text content. |
---|
1813 | function eltText(node) { |
---|
1814 | return node.textContent || node.innerText || node.nodeValue || ""; |
---|
1815 | } |
---|
1816 | |
---|
1817 | // Operations on {line, ch} objects. |
---|
1818 | function posEq(a, b) {return a.line == b.line && a.ch == b.ch;} |
---|
1819 | function posLess(a, b) {return a.line < b.line || (a.line == b.line && a.ch < b.ch);} |
---|
1820 | function copyPos(x) {return {line: x.line, ch: x.ch};} |
---|
1821 | |
---|
1822 | function htmlEscape(str) { |
---|
1823 | return str.replace(/[<&]/g, function(str) {return str == "&" ? "&" : "<";}); |
---|
1824 | } |
---|
1825 | |
---|
1826 | // Used to position the cursor after an undo/redo by finding the |
---|
1827 | // last edited character. |
---|
1828 | function editEnd(from, to) { |
---|
1829 | if (!to) return from ? from.length : 0; |
---|
1830 | if (!from) return to.length; |
---|
1831 | for (var i = from.length, j = to.length; i >= 0 && j >= 0; --i, --j) |
---|
1832 | if (from.charAt(i) != to.charAt(j)) break; |
---|
1833 | return j + 1; |
---|
1834 | } |
---|
1835 | |
---|
1836 | function indexOf(collection, elt) { |
---|
1837 | if (collection.indexOf) return collection.indexOf(elt); |
---|
1838 | for (var i = 0, e = collection.length; i < e; ++i) |
---|
1839 | if (collection[i] == elt) return i; |
---|
1840 | return -1; |
---|
1841 | } |
---|
1842 | |
---|
1843 | // See if "".split is the broken IE version, if so, provide an |
---|
1844 | // alternative way to split lines. |
---|
1845 | if ("\n\nb".split(/\n/).length != 3) |
---|
1846 | var splitLines = function(string) { |
---|
1847 | var pos = 0, nl, result = []; |
---|
1848 | while ((nl = string.indexOf("\n", pos)) > -1) { |
---|
1849 | result.push(string.slice(pos, string.charAt(nl-1) == "\r" ? nl - 1 : nl)); |
---|
1850 | pos = nl + 1; |
---|
1851 | } |
---|
1852 | result.push(string.slice(pos)); |
---|
1853 | return result; |
---|
1854 | }; |
---|
1855 | else |
---|
1856 | var splitLines = function(string){return string.split(/\r?\n/);}; |
---|
1857 | |
---|
1858 | // Sane model of finding and setting the selection in a textarea |
---|
1859 | if (window.getSelection) { |
---|
1860 | var selRange = function(te) { |
---|
1861 | try {return {start: te.selectionStart, end: te.selectionEnd};} |
---|
1862 | catch(e) {return null;} |
---|
1863 | }; |
---|
1864 | var setSelRange = function(te, start, end) { |
---|
1865 | try {te.setSelectionRange(start, end);} |
---|
1866 | catch(e) {} // Fails on Firefox when textarea isn't part of the document |
---|
1867 | }; |
---|
1868 | } |
---|
1869 | // IE model. Don't ask. |
---|
1870 | else { |
---|
1871 | var selRange = function(te) { |
---|
1872 | try {var range = document.selection.createRange();} |
---|
1873 | catch(e) {return null;} |
---|
1874 | if (!range || range.parentElement() != te) return null; |
---|
1875 | var val = te.value, len = val.length, localRange = te.createTextRange(); |
---|
1876 | localRange.moveToBookmark(range.getBookmark()); |
---|
1877 | var endRange = te.createTextRange(); |
---|
1878 | endRange.collapse(false); |
---|
1879 | |
---|
1880 | if (localRange.compareEndPoints("StartToEnd", endRange) > -1) |
---|
1881 | return {start: len, end: len}; |
---|
1882 | |
---|
1883 | var start = -localRange.moveStart("character", -len); |
---|
1884 | for (var i = val.indexOf("\r"); i > -1 && i < start; i = val.indexOf("\r", i+1), start++) {} |
---|
1885 | |
---|
1886 | if (localRange.compareEndPoints("EndToEnd", endRange) > -1) |
---|
1887 | return {start: start, end: len}; |
---|
1888 | |
---|
1889 | var end = -localRange.moveEnd("character", -len); |
---|
1890 | for (var i = val.indexOf("\r"); i > -1 && i < end; i = val.indexOf("\r", i+1), end++) {} |
---|
1891 | return {start: start, end: end}; |
---|
1892 | }; |
---|
1893 | var setSelRange = function(te, start, end) { |
---|
1894 | var range = te.createTextRange(); |
---|
1895 | range.collapse(true); |
---|
1896 | var endrange = range.duplicate(); |
---|
1897 | var newlines = 0, txt = te.value; |
---|
1898 | for (var pos = txt.indexOf("\n"); pos > -1 && pos < start; pos = txt.indexOf("\n", pos + 1)) |
---|
1899 | ++newlines; |
---|
1900 | range.move("character", start - newlines); |
---|
1901 | for (; pos > -1 && pos < end; pos = txt.indexOf("\n", pos + 1)) |
---|
1902 | ++newlines; |
---|
1903 | endrange.move("character", end - newlines); |
---|
1904 | range.setEndPoint("EndToEnd", endrange); |
---|
1905 | range.select(); |
---|
1906 | }; |
---|
1907 | } |
---|
1908 | |
---|
1909 | CodeMirror.defineMode("null", function() { |
---|
1910 | return {token: function(stream) {stream.skipToEnd();}}; |
---|
1911 | }); |
---|
1912 | CodeMirror.defineMIME("text/plain", "null"); |
---|
1913 | |
---|
1914 | return CodeMirror; |
---|
1915 | })(); |
---|