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/*!
* jQuery UI Mouse @VERSION
* http://jqueryui.com
*
* Copyright jQuery Foundation and other contributors
* Released under the MIT license.
* http://jquery.org/license
*/
//>>label: Mouse
//>>group: UI Core
//>>description: Abstracts mouse-based interactions to assist in creating certain widgets.
//>>docs: http://api.jqueryui.com/mouse/
(function( factory ) {
if ( typeof define === "function" && define.amd ) {
// AMD. Register as an anonymous module.
define([
"jquery",
"../ie",
"../version",
"../widget"
], factory );
} else {
// Browser globals
factory( jQuery );
}
}(function( $ ) {
var mouseHandled = false;
$( document ).on( "mouseup", function() {
mouseHandled = false;
});
return $.widget("ui.mouse", {
version: "@VERSION",
options: {
cancel: "input, textarea, button, select, option",
distance: 1,
delay: 0
},
_mouseInit: function() {
var that = this;
this.element
.on("mousedown." + this.widgetName, function(event) {
return that._mouseDown(event);
})
.on("click." + this.widgetName, function(event) {
if (true === $.data(event.target, that.widgetName + ".preventClickEvent")) {
$.removeData(event.target, that.widgetName + ".preventClickEvent");
event.stopImmediatePropagation();
return false;
}
});
this.started = false;
},
// TODO: make sure destroying one instance of mouse doesn't mess with
// other instances of mouse
_mouseDestroy: function() {
this.element.off("." + this.widgetName);
if ( this._mouseMoveDelegate ) {
this.document
.off("mousemove." + this.widgetName, this._mouseMoveDelegate)
.off("mouseup." + this.widgetName, this._mouseUpDelegate);
}
},
_mouseDown: function(event) {
// don't let more than one widget handle mouseStart
if ( mouseHandled ) {
return;
}
this._mouseMoved = false;
// we may have missed mouseup (out of window)
(this._mouseStarted && this._mouseUp(event));
this._mouseDownEvent = event;
var that = this,
btnIsLeft = (event.which === 1),
// event.target.nodeName works around a bug in IE 8 with
// disabled inputs (#7620)
elIsCancel = (typeof this.options.cancel === "string" && event.target.nodeName ? $(event.target).closest(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() {
that.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;
}
}
// Click event may never have fired (Gecko & Opera)
if (true === $.data(event.target, this.widgetName + ".preventClickEvent")) {
$.removeData(event.target, this.widgetName + ".preventClickEvent");
}
// these delegates are required to keep context
this._mouseMoveDelegate = function(event) {
return that._mouseMove(event);
};
this._mouseUpDelegate = function(event) {
return that._mouseUp(event);
};
this.document
.on( "mousemove." + this.widgetName, this._mouseMoveDelegate )
.on( "mouseup." + this.widgetName, this._mouseUpDelegate );
event.preventDefault();
mouseHandled = true;
return true;
},
_mouseMove: function(event) {
// Only check for mouseups outside the document if you've moved inside the document
// at least once. This prevents the firing of mouseup in the case of IE<9, which will
// fire a mousemove event if content is placed under the cursor. See #7778
// Support: IE <9
if ( this._mouseMoved ) {
// IE mouseup check - mouseup happened when mouse was out of window
if ($.ui.ie && ( !document.documentMode || document.documentMode < 9 ) && !event.button) {
return this._mouseUp(event);
// Iframe mouseup check - mouseup occurred in another document
} else if ( !event.which ) {
return this._mouseUp( event );
}
}
if ( event.which || event.button ) {
this._mouseMoved = true;
}
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) {
this.document
.off( "mousemove." + this.widgetName, this._mouseMoveDelegate )
.off( "mouseup." + this.widgetName, this._mouseUpDelegate );
if (this._mouseStarted) {
this._mouseStarted = false;
if (event.target === this._mouseDownEvent.target) {
$.data(event.target, this.widgetName + ".preventClickEvent", true);
}
this._mouseStop(event);
}
mouseHandled = false;
return false;
},
_mouseDistanceMet: function(event) {
return (Math.max(
Math.abs(this._mouseDownEvent.pageX - event.pageX),
Math.abs(this._mouseDownEvent.pageY - event.pageY)
) >= this.options.distance
);
},
_mouseDelayMet: function(/* event */) {
return this.mouseDelayMet;
},
// These are placeholder methods, to be overriden by extending plugin
_mouseStart: function(/* event */) {},
_mouseDrag: function(/* event */) {},
_mouseStop: function(/* event */) {},
_mouseCapture: function(/* event */) { return true; }
});
}));
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