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(event) {
// don’t let more than one widget handle mouseStart
// TODO: figure out why we have to use originalEvent
event.originalEvent = event.originalEvent || {};
if (event.originalEvent.mouseHandled) { return; }
// we may have missed mouseup (out of window)
(this._mouseStarted && this._mouseUp(event));
this._mouseDownEvent = event;
var self = this,
btnIsLeft = (event.which == 1),
elIsCancel = (typeof this.options.cancel == “string” ? $(event.target).parents().add(event.target).filter(this.options.cancel).length : false);
if (!btnIsLeft || elIsCancel || !this._mouseCapture(event)) {
return true;
}
this.mouseDelayMet = !this.options.delay;
if (!this.mouseDelayMet) {
this._mouseDelayTimer = setTimeout(function() {
self.mouseDelayMet = true;
}, this.options.delay);
}
if (this._mouseDistanceMet(event) && this._mouseDelayMet(event)) {
this._mouseStarted = (this._mouseStart(event) !== false);
if (!this._mouseStarted) {
event.preventDefault();
return true;
}
}
// these delegates are required to keep context
this._mouseMoveDelegate = function(event) {
return self._mouseMove(event);
};
this._mouseUpDelegate = function(event) {
return self._mouseUp(event);
};
$(document)
.bind(‘mousemove.’+this.widgetName, this._mouseMoveDelegate)
.bind(‘mouseup.’+this.widgetName, this._mouseUpDelegate);
// preventDefault() is used to prevent the selection of text here –
// however, in Safari, this causes select boxes not to be selectable
// anymore, so this fix is needed
($.browser.safari || event.preventDefault());
event.originalEvent.mouseHandled = true;
return true;
},
_mouseMove: function(event) {
// IE mouseup check – mouseup happened when mouse was out of window
if ($.browser.msie && !event.button) {
return this._mouseUp(event);
}
if (this._mouseStarted) {
this._mouseDrag(event);
return event.preventDefault();
}
if (this._mouseDistanceMet(event) && this._mouseDelayMet(event)) {
this._mouseStarted =
(this._mouseStart(this._mouseDownEvent, event) !== false);
(this._mouseStarted ? this._mouseDrag(event) : this._mouseUp(event));
}
return !this._mouseStarted;
},
_mouseUp: function(event) {
$(document)
.unbind(‘mousemove.’+this.widgetName, this._mouseMoveDelegate)
.unbind(‘mouseup.’+this.widgetName, this._mouseUpDelegate);
