https://www.alfredstreet.org/wp-includes/js/jquery/ui/mouse.js?ver=1.13.3

1/*!
2 * jQuery UI Mouse 1.13.3
3 * https://jqueryui.com
4 *
5 * Copyright OpenJS Foundation and other contributors
6 * Released under the MIT license.
7 * https://jquery.org/license
8 */
9
10//>>label: Mouse
11//>>group: Widgets
12//>>description: Abstracts mouse-based interactions to assist in creating certain widgets.
13//>>docs: https://api.jqueryui.com/mouse/
14
15( function( factory ) {
16	"use strict";
17
18	if ( typeof define === "function" && define.amd ) {
19
20		// AMD. Register as an anonymous module.
21		define( [
22			"jquery",
23			"../ie",
24			"../version",
25			"../widget"
26		], factory );
27	} else {
28
29		// Browser globals
30		factory( jQuery );
31	}
32} )( function( $ ) {
33"use strict";
34
35var mouseHandled = false;
36$( document ).on( "mouseup", function() {
37	mouseHandled = false;
38} );
39
40return $.widget( "ui.mouse", {
41	version: "1.13.3",
42	options: {
43		cancel: "input, textarea, button, select, option",
44		distance: 1,
45		delay: 0
46	},
47	_mouseInit: function() {
48		var that = this;
49
50		this.element
51			.on( "mousedown." + this.widgetName, function( event ) {
52				return that._mouseDown( event );
53			} )
54			.on( "click." + this.widgetName, function( event ) {
55				if ( true === $.data( event.target, that.widgetName + ".preventClickEvent" ) ) {
56					$.removeData( event.target, that.widgetName + ".preventClickEvent" );
57					event.stopImmediatePropagation();
58					return false;
59				}
60			} );
61
62		this.started = false;
63	},
64
65	// TODO: make sure destroying one instance of mouse doesn't mess with
66	// other instances of mouse
67	_mouseDestroy: function() {
68		this.element.off( "." + this.widgetName );
69		if ( this._mouseMoveDelegate ) {
70			this.document
71				.off( "mousemove." + this.widgetName, this._mouseMoveDelegate )
72				.off( "mouseup." + this.widgetName, this._mouseUpDelegate );
73		}
74	},
75
76	_mouseDown: function( event ) {
77
78		// don't let more than one widget handle mouseStart
79		if ( mouseHandled ) {
80			return;
81		}
82
83		this._mouseMoved = false;
84
85		// We may have missed mouseup (out of window)
86		if ( this._mouseStarted ) {
87			this._mouseUp( event );
88		}
89
90		this._mouseDownEvent = event;
91
92		var that = this,
93			btnIsLeft = ( event.which === 1 ),
94
95			// event.target.nodeName works around a bug in IE 8 with
96			// disabled inputs (#7620)
97			elIsCancel = ( typeof this.options.cancel === "string" && event.target.nodeName ?
98				$( event.target ).closest( this.options.cancel ).length : false );
99		if ( !btnIsLeft || elIsCancel || !this._mouseCapture( event ) ) {
100			return true;
101		}
102
103		this.mouseDelayMet = !this.options.delay;
104		if ( !this.mouseDelayMet ) {
105			this._mouseDelayTimer = setTimeout( function() {
106				that.mouseDelayMet = true;
107			}, this.options.delay );
108		}
109
110		if ( this._mouseDistanceMet( event ) && this._mouseDelayMet( event ) ) {
111			this._mouseStarted = ( this._mouseStart( event ) !== false );
112			if ( !this._mouseStarted ) {
113				event.preventDefault();
114				return true;
115			}
116		}
117
118		// Click event may never have fired (Gecko & Opera)
119		if ( true === $.data( event.target, this.widgetName + ".preventClickEvent" ) ) {
120			$.removeData( event.target, this.widgetName + ".preventClickEvent" );
121		}
122
123		// These delegates are required to keep context
124		this._mouseMoveDelegate = function( event ) {
125			return that._mouseMove( event );
126		};
127		this._mouseUpDelegate = function( event ) {
128			return that._mouseUp( event );
129		};
130
131		this.document
132			.on( "mousemove." + this.widgetName, this._mouseMoveDelegate )
133			.on( "mouseup." + this.widgetName, this._mouseUpDelegate );
134
135		event.preventDefault();
136
137		mouseHandled = true;
138		return true;
139	},
140
141	_mouseMove: function( event ) {
142
143		// Only check for mouseups outside the document if you've moved inside the document
144		// at least once. This prevents the firing of mouseup in the case of IE<9, which will
145		// fire a mousemove event if content is placed under the cursor. See #7778
146		// Support: IE <9
147		if ( this._mouseMoved ) {
148
149			// IE mouseup check - mouseup happened when mouse was out of window
150			if ( $.ui.ie && ( !document.documentMode || document.documentMode < 9 ) &&
151					!event.button ) {
152				return this._mouseUp( event );
153
154			// Iframe mouseup check - mouseup occurred in another document
155			} else if ( !event.which ) {
156
157				// Support: Safari <=8 - 9
158				// Safari sets which to 0 if you press any of the following keys
159				// during a drag (#14461)
160				if ( event.originalEvent.altKey || event.originalEvent.ctrlKey ||
161						event.originalEvent.metaKey || event.originalEvent.shiftKey ) {
162					this.ignoreMissingWhich = true;
163				} else if ( !this.ignoreMissingWhich ) {
164					return this._mouseUp( event );
165				}
166			}
167		}
168
169		if ( event.which || event.button ) {
170			this._mouseMoved = true;
171		}
172
173		if ( this._mouseStarted ) {
174			this._mouseDrag( event );
175			return event.preventDefault();
176		}
177
178		if ( this._mouseDistanceMet( event ) && this._mouseDelayMet( event ) ) {
179			this._mouseStarted =
180				( this._mouseStart( this._mouseDownEvent, event ) !== false );
181			if ( this._mouseStarted ) {
182				this._mouseDrag( event );
183			} else {
184				this._mouseUp( event );
185			}
186		}
187
188		return !this._mouseStarted;
189	},
190
191	_mouseUp: function( event ) {
192		this.document
193			.off( "mousemove." + this.widgetName, this._mouseMoveDelegate )
194			.off( "mouseup." + this.widgetName, this._mouseUpDelegate );
195
196		if ( this._mouseStarted ) {
197			this._mouseStarted = false;
198
199			if ( event.target === this._mouseDownEvent.target ) {
200				$.data( event.target, this.widgetName + ".preventClickEvent", true );
201			}
202
203			this._mouseStop( event );
204		}
205
206		if ( this._mouseDelayTimer ) {
207			clearTimeout( this._mouseDelayTimer );
208			delete this._mouseDelayTimer;
209		}
210
211		this.ignoreMissingWhich = false;
212		mouseHandled = false;
213		event.preventDefault();
214	},
215
216	_mouseDistanceMet: function( event ) {
217		return ( Math.max(
218				Math.abs( this._mouseDownEvent.pageX - event.pageX ),
219				Math.abs( this._mouseDownEvent.pageY - event.pageY )
220			) >= this.options.distance
221		);
222	},
223
224	_mouseDelayMet: function( /* event */ ) {
225		return this.mouseDelayMet;
226	},
227
228	// These are placeholder methods, to be overriden by extending plugin
229	_mouseStart: function( /* event */ ) {},
230	_mouseDrag: function( /* event */ ) {},
231	_mouseStop: function( /* event */ ) {},
232	_mouseCapture: function( /* event */ ) {
233		return true;
234	}
235} );
236
237} );