1 | /* |
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2 | * FCKeditor - The text editor for Internet - http://www.fckeditor.net |
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3 | * Copyright (C) 2003-2009 Frederico Caldeira Knabben |
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4 | * |
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5 | * == BEGIN LICENSE == |
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6 | * |
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7 | * Licensed under the terms of any of the following licenses at your |
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8 | * choice: |
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9 | * |
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10 | * - GNU General Public License Version 2 or later (the "GPL") |
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11 | * http://www.gnu.org/licenses/gpl.html |
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12 | * |
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13 | * - GNU Lesser General Public License Version 2.1 or later (the "LGPL") |
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14 | * http://www.gnu.org/licenses/lgpl.html |
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15 | * |
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16 | * - Mozilla Public License Version 1.1 or later (the "MPL") |
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17 | * http://www.mozilla.org/MPL/MPL-1.1.html |
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18 | * |
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19 | * == END LICENSE == |
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20 | * |
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21 | * Plugin: automatically resizes the editor until a configurable maximun |
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22 | * height (FCKConfig.AutoGrowMax), based on its contents. |
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23 | */ |
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24 | |
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25 | var FCKAutoGrow = { |
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26 | MIN_HEIGHT : window.frameElement.offsetHeight, |
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27 | |
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28 | Check : function() |
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29 | { |
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30 | var delta = FCKAutoGrow.GetHeightDelta() ; |
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31 | if ( delta != 0 ) |
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32 | { |
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33 | var newHeight = window.frameElement.offsetHeight + delta ; |
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34 | |
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35 | newHeight = FCKAutoGrow.GetEffectiveHeight( newHeight ) ; |
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36 | |
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37 | if ( newHeight != window.frameElement.height ) |
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38 | { |
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39 | window.frameElement.style.height = newHeight + "px" ; |
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40 | |
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41 | // Gecko browsers use an onresize handler to update the innermost |
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42 | // IFRAME's height. If the document is modified before the onresize |
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43 | // is triggered, the plugin will miscalculate the new height. Thus, |
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44 | // forcibly trigger onresize. #1336 |
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45 | if ( typeof window.onresize == 'function' ) |
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46 | { |
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47 | window.onresize() ; |
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48 | } |
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49 | } |
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50 | } |
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51 | }, |
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52 | |
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53 | CheckEditorStatus : function( sender, status ) |
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54 | { |
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55 | if ( status == FCK_STATUS_COMPLETE ) |
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56 | FCKAutoGrow.Check() ; |
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57 | }, |
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58 | |
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59 | GetEffectiveHeight : function( height ) |
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60 | { |
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61 | if ( height < FCKAutoGrow.MIN_HEIGHT ) |
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62 | height = FCKAutoGrow.MIN_HEIGHT; |
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63 | else |
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64 | { |
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65 | var max = FCKConfig.AutoGrowMax; |
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66 | if ( max && max > 0 && height > max ) |
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67 | height = max; |
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68 | } |
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69 | |
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70 | return height; |
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71 | }, |
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72 | |
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73 | GetHeightDelta : function() |
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74 | { |
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75 | var oInnerDoc = FCK.EditorDocument ; |
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76 | |
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77 | var iFrameHeight ; |
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78 | var iInnerHeight ; |
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79 | |
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80 | if ( FCKBrowserInfo.IsIE ) |
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81 | { |
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82 | iFrameHeight = FCK.EditorWindow.frameElement.offsetHeight ; |
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83 | iInnerHeight = oInnerDoc.body.scrollHeight ; |
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84 | } |
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85 | else |
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86 | { |
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87 | iFrameHeight = FCK.EditorWindow.innerHeight ; |
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88 | iInnerHeight = oInnerDoc.body.offsetHeight + |
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89 | ( parseInt( FCKDomTools.GetCurrentElementStyle( oInnerDoc.body, 'margin-top' ), 10 ) || 0 ) + |
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90 | ( parseInt( FCKDomTools.GetCurrentElementStyle( oInnerDoc.body, 'margin-bottom' ), 10 ) || 0 ) ; |
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91 | } |
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92 | |
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93 | return iInnerHeight - iFrameHeight ; |
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94 | }, |
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95 | |
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96 | SetListeners : function() |
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97 | { |
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98 | if ( FCK.EditMode != FCK_EDITMODE_WYSIWYG ) |
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99 | return ; |
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100 | |
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101 | FCK.EditorWindow.attachEvent( 'onscroll', FCKAutoGrow.Check ) ; |
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102 | FCK.EditorDocument.attachEvent( 'onkeyup', FCKAutoGrow.Check ) ; |
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103 | } |
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104 | }; |
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105 | |
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106 | FCK.AttachToOnSelectionChange( FCKAutoGrow.Check ) ; |
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107 | |
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108 | if ( FCKBrowserInfo.IsIE ) |
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109 | FCK.Events.AttachEvent( 'OnAfterSetHTML', FCKAutoGrow.SetListeners ) ; |
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110 | |
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111 | FCK.Events.AttachEvent( 'OnStatusChange', FCKAutoGrow.CheckEditorStatus ) ; |
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