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[redakcja.git] / redakcja / static / contextmenu / jquery.ui.position.js
1 /*!
2  * jQuery UI Position 1.8.13
3  *
4  * Copyright 2011, AUTHORS.txt (http://jqueryui.com/about)
5  * Dual licensed under the MIT or GPL Version 2 licenses.
6  * http://jquery.org/license
7  *
8  * http://docs.jquery.com/UI/Position
9  */
10 (function( $, undefined ) {
11
12 $.ui = $.ui || {};
13
14 var horizontalPositions = /left|center|right/,
15         verticalPositions = /top|center|bottom/,
16         center = "center",
17         _position = $.fn.position,
18         _offset = $.fn.offset;
19
20 $.fn.position = function( options ) {
21         if ( !options || !options.of ) {
22                 return _position.apply( this, arguments );
23         }
24
25         // make a copy, we don't want to modify arguments
26         options = $.extend( {}, options );
27
28         var target = $( options.of ),
29                 targetElem = target[0],
30                 collision = ( options.collision || "flip" ).split( " " ),
31                 offset = options.offset ? options.offset.split( " " ) : [ 0, 0 ],
32                 targetWidth,
33                 targetHeight,
34                 basePosition;
35
36         if ( targetElem.nodeType === 9 ) {
37                 targetWidth = target.width();
38                 targetHeight = target.height();
39                 basePosition = { top: 0, left: 0 };
40         // TODO: use $.isWindow() in 1.9
41         } else if ( targetElem.setTimeout ) {
42                 targetWidth = target.width();
43                 targetHeight = target.height();
44                 basePosition = { top: target.scrollTop(), left: target.scrollLeft() };
45         } else if ( targetElem.preventDefault ) {
46                 // force left top to allow flipping
47                 options.at = "left top";
48                 targetWidth = targetHeight = 0;
49                 basePosition = { top: options.of.pageY, left: options.of.pageX };
50         } else {
51                 targetWidth = target.outerWidth();
52                 targetHeight = target.outerHeight();
53                 basePosition = target.offset();
54         }
55
56         // force my and at to have valid horizontal and veritcal positions
57         // if a value is missing or invalid, it will be converted to center 
58         $.each( [ "my", "at" ], function() {
59                 var pos = ( options[this] || "" ).split( " " );
60                 if ( pos.length === 1) {
61                         pos = horizontalPositions.test( pos[0] ) ?
62                                 pos.concat( [center] ) :
63                                 verticalPositions.test( pos[0] ) ?
64                                         [ center ].concat( pos ) :
65                                         [ center, center ];
66                 }
67                 pos[ 0 ] = horizontalPositions.test( pos[0] ) ? pos[ 0 ] : center;
68                 pos[ 1 ] = verticalPositions.test( pos[1] ) ? pos[ 1 ] : center;
69                 options[ this ] = pos;
70         });
71
72         // normalize collision option
73         if ( collision.length === 1 ) {
74                 collision[ 1 ] = collision[ 0 ];
75         }
76
77         // normalize offset option
78         offset[ 0 ] = parseInt( offset[0], 10 ) || 0;
79         if ( offset.length === 1 ) {
80                 offset[ 1 ] = offset[ 0 ];
81         }
82         offset[ 1 ] = parseInt( offset[1], 10 ) || 0;
83
84         if ( options.at[0] === "right" ) {
85                 basePosition.left += targetWidth;
86         } else if ( options.at[0] === center ) {
87                 basePosition.left += targetWidth / 2;
88         }
89
90         if ( options.at[1] === "bottom" ) {
91                 basePosition.top += targetHeight;
92         } else if ( options.at[1] === center ) {
93                 basePosition.top += targetHeight / 2;
94         }
95
96         basePosition.left += offset[ 0 ];
97         basePosition.top += offset[ 1 ];
98
99         return this.each(function() {
100                 var elem = $( this ),
101                         elemWidth = elem.outerWidth(),
102                         elemHeight = elem.outerHeight(),
103                         marginLeft = parseInt( $.curCSS( this, "marginLeft", true ) ) || 0,
104                         marginTop = parseInt( $.curCSS( this, "marginTop", true ) ) || 0,
105                         collisionWidth = elemWidth + marginLeft +
106                                 ( parseInt( $.curCSS( this, "marginRight", true ) ) || 0 ),
107                         collisionHeight = elemHeight + marginTop +
108                                 ( parseInt( $.curCSS( this, "marginBottom", true ) ) || 0 ),
109                         position = $.extend( {}, basePosition ),
110                         collisionPosition;
111
112                 if ( options.my[0] === "right" ) {
113                         position.left -= elemWidth;
114                 } else if ( options.my[0] === center ) {
115                         position.left -= elemWidth / 2;
116                 }
117
118                 if ( options.my[1] === "bottom" ) {
119                         position.top -= elemHeight;
120                 } else if ( options.my[1] === center ) {
121                         position.top -= elemHeight / 2;
122                 }
123
124                 // prevent fractions (see #5280)
125                 position.left = Math.round( position.left );
126                 position.top = Math.round( position.top );
127
128                 collisionPosition = {
129                         left: position.left - marginLeft,
130                         top: position.top - marginTop
131                 };
132
133                 $.each( [ "left", "top" ], function( i, dir ) {
134                         if ( $.ui.position[ collision[i] ] ) {
135                                 $.ui.position[ collision[i] ][ dir ]( position, {
136                                         targetWidth: targetWidth,
137                                         targetHeight: targetHeight,
138                                         elemWidth: elemWidth,
139                                         elemHeight: elemHeight,
140                                         collisionPosition: collisionPosition,
141                                         collisionWidth: collisionWidth,
142                                         collisionHeight: collisionHeight,
143                                         offset: offset,
144                                         my: options.my,
145                                         at: options.at
146                                 });
147                         }
148                 });
149
150                 if ( $.fn.bgiframe ) {
151                         elem.bgiframe();
152                 }
153                 elem.offset( $.extend( position, { using: options.using } ) );
154         });
155 };
156
157 $.ui.position = {
158         fit: {
159                 left: function( position, data ) {
160                         var win = $( window ),
161                                 over = data.collisionPosition.left + data.collisionWidth - win.width() - win.scrollLeft();
162                         position.left = over > 0 ? position.left - over : Math.max( position.left - data.collisionPosition.left, position.left );
163                 },
164                 top: function( position, data ) {
165                         var win = $( window ),
166                                 over = data.collisionPosition.top + data.collisionHeight - win.height() - win.scrollTop();
167                         position.top = over > 0 ? position.top - over : Math.max( position.top - data.collisionPosition.top, position.top );
168                 }
169         },
170
171         flip: {
172                 left: function( position, data ) {
173                         if ( data.at[0] === center ) {
174                                 return;
175                         }
176                         var win = $( window ),
177                                 over = data.collisionPosition.left + data.collisionWidth - win.width() - win.scrollLeft(),
178                                 myOffset = data.my[ 0 ] === "left" ?
179                                         -data.elemWidth :
180                                         data.my[ 0 ] === "right" ?
181                                                 data.elemWidth :
182                                                 0,
183                                 atOffset = data.at[ 0 ] === "left" ?
184                                         data.targetWidth :
185                                         -data.targetWidth,
186                                 offset = -2 * data.offset[ 0 ];
187                         position.left += data.collisionPosition.left < 0 ?
188                                 myOffset + atOffset + offset :
189                                 over > 0 ?
190                                         myOffset + atOffset + offset :
191                                         0;
192                 },
193                 top: function( position, data ) {
194                         if ( data.at[1] === center ) {
195                                 return;
196                         }
197                         var win = $( window ),
198                                 over = data.collisionPosition.top + data.collisionHeight - win.height() - win.scrollTop(),
199                                 myOffset = data.my[ 1 ] === "top" ?
200                                         -data.elemHeight :
201                                         data.my[ 1 ] === "bottom" ?
202                                                 data.elemHeight :
203                                                 0,
204                                 atOffset = data.at[ 1 ] === "top" ?
205                                         data.targetHeight :
206                                         -data.targetHeight,
207                                 offset = -2 * data.offset[ 1 ];
208                         position.top += data.collisionPosition.top < 0 ?
209                                 myOffset + atOffset + offset :
210                                 over > 0 ?
211                                         myOffset + atOffset + offset :
212                                         0;
213                 }
214         }
215 };
216
217 // offset setter from jQuery 1.4
218 if ( !$.offset.setOffset ) {
219         $.offset.setOffset = function( elem, options ) {
220                 // set position first, in-case top/left are set even on static elem
221                 if ( /static/.test( $.curCSS( elem, "position" ) ) ) {
222                         elem.style.position = "relative";
223                 }
224                 var curElem   = $( elem ),
225                         curOffset = curElem.offset(),
226                         curTop    = parseInt( $.curCSS( elem, "top",  true ), 10 ) || 0,
227                         curLeft   = parseInt( $.curCSS( elem, "left", true ), 10)  || 0,
228                         props     = {
229                                 top:  (options.top  - curOffset.top)  + curTop,
230                                 left: (options.left - curOffset.left) + curLeft
231                         };
232                 
233                 if ( 'using' in options ) {
234                         options.using.call( elem, props );
235                 } else {
236                         curElem.css( props );
237                 }
238         };
239
240         $.fn.offset = function( options ) {
241                 var elem = this[ 0 ];
242                 if ( !elem || !elem.ownerDocument ) { return null; }
243                 if ( options ) { 
244                         return this.each(function() {
245                                 $.offset.setOffset( this, options );
246                         });
247                 }
248                 return _offset.call( this );
249         };
250 }
251
252 }( jQuery ));