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(function($) {
//If the UI scope is not available, add it
$.ui = $.ui || {};
//Add methods that are vital for all mouse interaction stuff (plugin registering)
$.extend($.ui, {
plugin: {
add: function(module, option, set) {
var proto = $.ui[module].prototype;
for(var i in set) {
proto.plugins[i] = proto.plugins[i] || [];
proto.plugins[i].push([option, set[i]]);
}
},
call: function(instance, name, arguments) {
var set = instance.plugins[name]; if(!set) return;
for (var i = 0; i < set.length; i++) {
if (instance.options[set[i][0]]) set[i][1].apply(instance.element, arguments);
}
}
},
cssCache: {},
css: function(name) {
if ($.ui.cssCache[name]) return $.ui.cssCache[name];
var tmp = $('<div class="ui-resizable-gen">').addClass(name).css(
{position:'absolute', top:'-5000px', left:'-5000px', display:'block'}
).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] = !!(
((/^[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(e) {
if (!e) return;
e.unselectable = "on";
e.onselectstart = function() { return false; };
if (e.style) e.style.MozUserSelect = "none";
},
enableSelection: function(e) {
if (!e) return;
e.unselectable = "off";
e.onselectstart = function() { return true; };
if (e.style) e.style.MozUserSelect = "";
}
});
/********************************************************************************************************/
$.fn.extend({
mouseInteraction: function(o) {
return this.each(function() {
new $.ui.mouseInteraction(this, o);
});
},
removeMouseInteraction: function(o) {
return this.each(function() {
if($.data(this, "ui-mouse"))
$.data(this, "ui-mouse").destroy();
});
}
});
/********************************************************************************************************/
$.ui.mouseInteraction = function(element, options) {
var self = this;
this.element = element;
$.data(this.element, "ui-mouse", this);
this.options = $.extend({}, options);
$(element).bind('mousedown.draggable', function() { return self.click.apply(self, arguments); });
if($.browser.msie) $(element).attr('unselectable', 'on'); //Prevent text selection in IE
};
$.extend($.ui.mouseInteraction.prototype, {
destroy: function() { $(this.element).unbind('mousedown.draggable'); },
trigger: function() { return this.click.apply(this, arguments); },
click: function(e) {
if(
e.which != 1 //only left click starts dragging
|| $.inArray(e.target.nodeName.toLowerCase(), this.options.dragPrevention) != -1 // Prevent execution on defined elements
|| (this.options.condition && !this.options.condition.apply(this.options.executor || this, [e, this.element])) //Prevent execution on condition
) return true;
var self = this;
var initialize = function() {
self._MP = { left: e.pageX, top: e.pageY }; // Store the click mouse position
$(document).bind('mouseup.draggable', function() { return self.stop.apply(self, arguments); });
$(document).bind('mousemove.draggable', function() { return self.drag.apply(self, arguments); });
};
if(this.options.delay) {
if(this.timer) clearInterval(this.timer);
this.timer = setTimeout(initialize, this.options.delay);
} else {
initialize();
}
return false;
},
stop: function(e) {
var o = this.options;
if(!this.initialized) return $(document).unbind('mouseup.draggable').unbind('mousemove.draggable');
if(this.options.stop) this.options.stop.call(this.options.executor || this, e, this.element);
$(document).unbind('mouseup.draggable').unbind('mousemove.draggable');
this.initialized = false;
return false;
},
drag: function(e) {
var o = this.options;
if ($.browser.msie && !e.button) return this.stop.apply(this, [e]); // IE mouseup check
if(!this.initialized && (Math.abs(this._MP.left-e.pageX) >= o.distance || Math.abs(this._MP.top-e.pageY) >= o.distance)) {
if(this.options.start) this.options.start.call(this.options.executor || this, e, this.element);
this.initialized = true;
} else {
if(!this.initialized) return false;
}
if(o.drag) o.drag.call(this.options.executor || this, e, this.element);
return false;
}
});
})(jQuery);
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