source: trunk/template-common/lib/ui/ui.core.js @ 3282

/*
 * jQuery UI 1.5.3
 *
 * Copyright (c) 2008 Paul Bakaus (ui.jquery.com)
 * Dual licensed under the MIT (MIT-LICENSE.txt)
 * and GPL (GPL-LICENSE.txt) licenses.
 *
 * http://docs.jquery.com/UI
 */
;(function($) {

$.ui = {
        plugin: {
                add: function(module, option, set) {
                        var proto = $.ui[module].prototype;
                        for(var i in set) {
                                proto.plugins[i] = proto.plugins[i] || [];
                                proto.plugins[i].push([option, set[i]]);
                        }
                },
                call: function(instance, name, args) {
                        var set = instance.plugins[name];
                        if(!set) { return; }
                        
                        for (var i = 0; i < set.length; i++) {
                                if (instance.options[set[i][0]]) {
                                        set[i][1].apply(instance.element, args);
                                }
                        }
                }       
        },
        cssCache: {},
        css: function(name) {
                if ($.ui.cssCache[name]) { return $.ui.cssCache[name]; }
                var tmp = $('<div class="ui-gen">').addClass(name).css({position:'absolute', top:'-5000px', left:'-5000px', display:'block'}).appendTo('body');
                
                //if (!$.browser.safari)
                        //tmp.appendTo('body'); 
                
                //Opera and Safari set width and height to 0px instead of auto
                //Safari returns rgba(0,0,0,0) when bgcolor is not set
                $.ui.cssCache[name] = !!(
                        (!(/auto|default/).test(tmp.css('cursor')) || (/^[1-9]/).test(tmp.css('height')) || (/^[1-9]/).test(tmp.css('width')) || 
                        !(/none/).test(tmp.css('backgroundImage')) || !(/transparent|rgba\(0, 0, 0, 0\)/).test(tmp.css('backgroundColor')))
                );
                try { $('body').get(0).removeChild(tmp.get(0)); } catch(e){}
                return $.ui.cssCache[name];
        },
        disableSelection: function(el) {
                $(el).attr('unselectable', 'on').css('MozUserSelect', 'none');
        },
        enableSelection: function(el) {
                $(el).attr('unselectable', 'off').css('MozUserSelect', '');
        },
        hasScroll: function(e, a) {
                var scroll = /top/.test(a||"top") ? 'scrollTop' : 'scrollLeft', has = false;
                if (e[scroll] > 0) return true; e[scroll] = 1;
                has = e[scroll] > 0 ? true : false; e[scroll] = 0;
                return has;
        }
};


/** jQuery core modifications and additions **/

var _remove = $.fn.remove;
$.fn.remove = function() {
        $("*", this).add(this).triggerHandler("remove");
        return _remove.apply(this, arguments );
};

// $.widget is a factory to create jQuery plugins
// taking some boilerplate code out of the plugin code
// created by Scott González and Jörn Zaefferer
function getter(namespace, plugin, method) {
        var methods = $[namespace][plugin].getter || [];
        methods = (typeof methods == "string" ? methods.split(/,?\s+/) : methods);
        return ($.inArray(method, methods) != -1);
}

$.widget = function(name, prototype) {
        var namespace = name.split(".")[0];
        name = name.split(".")[1];
        
        // create plugin method
        $.fn[name] = function(options) {
                var isMethodCall = (typeof options == 'string'),
                        args = Array.prototype.slice.call(arguments, 1);
                
                if (isMethodCall && getter(namespace, name, options)) {
                        var instance = $.data(this[0], name);
                        return (instance ? instance[options].apply(instance, args)
                                : undefined);
                }
                
                return this.each(function() {
                        var instance = $.data(this, name);
                        if (isMethodCall && instance && $.isFunction(instance[options])) {
                                instance[options].apply(instance, args);
                        } else if (!isMethodCall) {
                                $.data(this, name, new $[namespace][name](this, options));
                        }
                });
        };
        
        // create widget constructor
        $[namespace][name] = function(element, options) {
                var self = this;
                
                this.widgetName = name;
                this.widgetBaseClass = namespace + '-' + name;
                
                this.options = $.extend({}, $.widget.defaults, $[namespace][name].defaults, options);
                this.element = $(element)
                        .bind('setData.' + name, function(e, key, value) {
                                return self.setData(key, value);
                        })
                        .bind('getData.' + name, function(e, key) {
                                return self.getData(key);
                        })
                        .bind('remove', function() {
                                return self.destroy();
                        });
                this.init();
        };
        
        // add widget prototype
        $[namespace][name].prototype = $.extend({}, $.widget.prototype, prototype);
};

$.widget.prototype = {
        init: function() {},
        destroy: function() {
                this.element.removeData(this.widgetName);
        },
        
        getData: function(key) {
                return this.options[key];
        },
        setData: function(key, value) {
                this.options[key] = value;
                
                if (key == 'disabled') {
                        this.element[value ? 'addClass' : 'removeClass'](
                                this.widgetBaseClass + '-disabled');
                }
        },
        
        enable: function() {
                this.setData('disabled', false);
        },
        disable: function() {
                this.setData('disabled', true);
        }
};

$.widget.defaults = {
        disabled: false
};


/** Mouse Interaction Plugin **/

$.ui.mouse = {
        mouseInit: function() {
                var self = this;
        
                this.element.bind('mousedown.'+this.widgetName, function(e) {
                        return self.mouseDown(e);
                });
                
                // Prevent text selection in IE
                if ($.browser.msie) {
                        this._mouseUnselectable = this.element.attr('unselectable');
                        this.element.attr('unselectable', 'on');
                }
                
                this.started = false;
        },
        
        // TODO: make sure destroying one instance of mouse doesn't mess with
        // other instances of mouse
        mouseDestroy: function() {
                this.element.unbind('.'+this.widgetName);
                
                // Restore text selection in IE
                ($.browser.msie
                        && this.element.attr('unselectable', this._mouseUnselectable));
        },
        
        mouseDown: function(e) {
                // we may have missed mouseup (out of window)
                (this._mouseStarted && this.mouseUp(e));
                
                this._mouseDownEvent = e;
                
                var self = this,
                        btnIsLeft = (e.which == 1),
                        elIsCancel = (typeof this.options.cancel == "string" ? $(e.target).parents().add(e.target).filter(this.options.cancel).length : false);
                if (!btnIsLeft || elIsCancel || !this.mouseCapture(e)) {
                        return true;
                }
                
                this._mouseDelayMet = !this.options.delay;
                if (!this._mouseDelayMet) {
                        this._mouseDelayTimer = setTimeout(function() {
                                self._mouseDelayMet = true;
                        }, this.options.delay);
                }
                
                if (this.mouseDistanceMet(e) && this.mouseDelayMet(e)) {
                        this._mouseStarted = (this.mouseStart(e) !== false);
                        if (!this._mouseStarted) {
                                e.preventDefault();
                                return true;
                        }
                }
                
                // these delegates are required to keep context
                this._mouseMoveDelegate = function(e) {
                        return self.mouseMove(e);
                };
                this._mouseUpDelegate = function(e) {
                        return self.mouseUp(e);
                };
                $(document)
                        .bind('mousemove.'+this.widgetName, this._mouseMoveDelegate)
                        .bind('mouseup.'+this.widgetName, this._mouseUpDelegate);
                
                return false;
        },
        
        mouseMove: function(e) {
                // IE mouseup check - mouseup happened when mouse was out of window
                if ($.browser.msie && !e.button) {
                        return this.mouseUp(e);
                }
                
                if (this._mouseStarted) {
                        this.mouseDrag(e);
                        return false;
                }
                
                if (this.mouseDistanceMet(e) && this.mouseDelayMet(e)) {
                        this._mouseStarted =
                                (this.mouseStart(this._mouseDownEvent, e) !== false);
                        (this._mouseStarted ? this.mouseDrag(e) : this.mouseUp(e));
                }
                
                return !this._mouseStarted;
        },
        
        mouseUp: function(e) {
                $(document)
                        .unbind('mousemove.'+this.widgetName, this._mouseMoveDelegate)
                        .unbind('mouseup.'+this.widgetName, this._mouseUpDelegate);
                
                if (this._mouseStarted) {
                        this._mouseStarted = false;
                        this.mouseStop(e);
                }
                
                return false;
        },
        
        mouseDistanceMet: function(e) {
                return (Math.max(
                                Math.abs(this._mouseDownEvent.pageX - e.pageX),
                                Math.abs(this._mouseDownEvent.pageY - e.pageY)
                        ) >= this.options.distance
                );
        },
        
        mouseDelayMet: function(e) {
                return this._mouseDelayMet;
        },
        
        // These are placeholder methods, to be overriden by extending plugin
        mouseStart: function(e) {},
        mouseDrag: function(e) {},
        mouseStop: function(e) {},
        mouseCapture: function(e) { return true; }
};

$.ui.mouse.defaults = {
        cancel: null,
        distance: 1,
        delay: 0
};

})(jQuery);