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[redakcja.git] / platforma / static / js / lib / jquery.splitter.js
1 /*
2  * jQuery.splitter.js - two-pane splitter window plugin
3  *
4  * version 1.51 (2009/01/09) 
5  * 
6  * Dual licensed under the MIT and GPL licenses: 
7  *   http://www.opensource.org/licenses/mit-license.php 
8  *   http://www.gnu.org/licenses/gpl.html 
9  */
10
11 /**
12  * The splitter() plugin implements a two-pane resizable splitter window.
13  * The selected elements in the jQuery object are converted to a splitter;
14  * each selected element should have two child elements, used for the panes
15  * of the splitter. The plugin adds a third child element for the splitbar.
16  * 
17  * For more details see: http://methvin.com/splitter/
18  *
19  *
20  * @example $('#MySplitter').splitter();
21  * @desc Create a vertical splitter with default settings 
22  *
23  * @example $('#MySplitter').splitter({type: 'h', accessKey: 'M'});
24  * @desc Create a horizontal splitter resizable via Alt+Shift+M
25  *
26  * @name splitter
27  * @type jQuery
28  * @param Object options Options for the splitter (not required)
29  * @cat Plugins/Splitter
30  * @return jQuery
31  * @author Dave Methvin (dave.methvin@gmail.com)
32  */
33  ;(function($){
34  
35  $.fn.splitter = function(args){
36         args = args || {};
37         return this.each(function() {
38                 var zombie;             // left-behind splitbar for outline resizes
39                 function startSplitMouse(evt) {
40                         if ( opts.outline )
41                                 zombie = zombie || bar.clone(false).insertAfter(A);
42                         panes.css("-webkit-user-select", "none");       // Safari selects A/B text on a move
43                         bar.addClass(opts.activeClass);
44                         A._posSplit = A[0][opts.pxSplit] - evt[opts.eventPos];
45                         $(document)
46                                 .bind("mousemove", doSplitMouse)
47                                 .bind("mouseup", endSplitMouse);
48                 }
49                 function doSplitMouse(evt) {
50                         var newPos = A._posSplit+evt[opts.eventPos];
51                         if ( opts.outline ) {
52                                 newPos = Math.max(0, Math.min(newPos, splitter._DA - bar._DA));
53                                 bar.css(opts.origin, newPos);
54                         } else 
55                                 resplit(newPos);
56                 }
57                 function endSplitMouse(evt) {
58                         bar.removeClass(opts.activeClass);
59                         var newPos = A._posSplit+evt[opts.eventPos];
60                         if ( opts.outline ) {
61                                 zombie.remove(); zombie = null;
62                                 resplit(newPos);
63                         }
64                         panes.css("-webkit-user-select", "text");       // let Safari select text again
65                         $(document)
66                                 .unbind("mousemove", doSplitMouse)
67                                 .unbind("mouseup", endSplitMouse);
68                 }
69                 function resplit(newPos) {
70                         // Constrain new splitbar position to fit pane size limits
71                         newPos = Math.max(A._min, splitter._DA - B._max, 
72                                         Math.min(newPos, A._max, splitter._DA - bar._DA - B._min));
73                         // Resize/position the two panes
74                         bar._DA = bar[0][opts.pxSplit];         // bar size may change during dock
75                         bar.css(opts.origin, newPos).css(opts.fixed, splitter._DF);
76                         A.css(opts.origin, 0).css(opts.split, newPos).css(opts.fixed,  splitter._DF);
77                         B.css(opts.origin, newPos+bar._DA)
78                                 .css(opts.split, splitter._DA-bar._DA-newPos).css(opts.fixed,  splitter._DF);
79                         // IE fires resize for us; all others pay cash
80                         if ( !$.browser.msie )
81                                 panes.trigger("resize");
82                 }
83                 function dimSum(jq, dims) {
84                         // Opera returns -1 for missing min/max width, turn into 0
85                         var sum = 0;
86                         for ( var i=1; i < arguments.length; i++ )
87                                 sum += Math.max(parseInt(jq.css(arguments[i])) || 0, 0);
88                         return sum;
89                 }
90                 
91                 // Determine settings based on incoming opts, element classes, and defaults
92                 var vh = (args.splitHorizontal? 'h' : args.splitVertical? 'v' : args.type) || 'v';
93                 var opts = $.extend({
94                         activeClass: 'active',  // class name for active splitter
95                         pxPerKey: 8,                    // splitter px moved per keypress
96                         tabIndex: 0,                    // tab order indicator
97                         accessKey: ''                   // accessKey for splitbar
98                 },{
99                         v: {                                    // Vertical splitters:
100                                 keyLeft: 39, keyRight: 37, cursor: "e-resize",
101                                 splitbarClass: "vsplitbar", outlineClass: "voutline",
102                                 type: 'v', eventPos: "pageX", origin: "left",
103                                 split: "width",  pxSplit: "offsetWidth",  side1: "Left", side2: "Right",
104                                 fixed: "height", pxFixed: "offsetHeight", side3: "Top",  side4: "Bottom"
105                         },
106                         h: {                                    // Horizontal splitters:
107                                 keyTop: 40, keyBottom: 38,  cursor: "n-resize",
108                                 splitbarClass: "hsplitbar", outlineClass: "houtline",
109                                 type: 'h', eventPos: "pageY", origin: "top",
110                                 split: "height", pxSplit: "offsetHeight", side1: "Top",  side2: "Bottom",
111                                 fixed: "width",  pxFixed: "offsetWidth",  side3: "Left", side4: "Right"
112                         }
113                 }[vh], args);
114
115                 // Create jQuery object closures for splitter and both panes
116                 var splitter = $(this).css({position: "relative"});
117                 var panes = $(">*", splitter[0]).css({
118                         position: "absolute",                   // positioned inside splitter container
119                         "z-index": "1",                                 // splitbar is positioned above
120                         "-moz-outline-style": "none"    // don't show dotted outline
121                 });
122                 var A = $(panes[0]);            // left  or top
123                 var B = $(panes[1]);            // right or bottom
124
125                 // Focuser element, provides keyboard support; title is shown by Opera accessKeys
126                 var focuser = $('<a href="javascript:void(0)"></a>')
127                         .attr({accessKey: opts.accessKey, tabIndex: opts.tabIndex, title: opts.splitbarClass})
128                         .bind($.browser.opera?"click":"focus", function(){ this.focus(); bar.addClass(opts.activeClass) })
129                         .bind("keydown", function(e){
130                                 var key = e.which || e.keyCode;
131                                 var dir = key==opts["key"+opts.side1]? 1 : key==opts["key"+opts.side2]? -1 : 0;
132                                 if ( dir )
133                                         resplit(A[0][opts.pxSplit]+dir*opts.pxPerKey, false);
134                         })
135                         .bind("blur", function(){ bar.removeClass(opts.activeClass) });
136                         
137                 // Splitbar element, can be already in the doc or we create one
138                 var bar = $(panes[2] || '<div></div>')
139                         .insertAfter(A).css("z-index", "100").append(focuser)
140                         .attr({"class": opts.splitbarClass, unselectable: "on"})
141                         .css({position: "absolute",     "user-select": "none", "-webkit-user-select": "none",
142                                 "-khtml-user-select": "none", "-moz-user-select": "none"})
143                         .bind("mousedown", startSplitMouse);
144                 // Use our cursor unless the style specifies a non-default cursor
145                 if ( /^(auto|default|)$/.test(bar.css("cursor")) )
146                         bar.css("cursor", opts.cursor);
147
148                 // Cache several dimensions for speed, rather than re-querying constantly
149                 bar._DA = bar[0][opts.pxSplit];
150                 splitter._PBF = $.boxModel? dimSum(splitter, "border"+opts.side3+"Width", "border"+opts.side4+"Width") : 0;
151                 splitter._PBA = $.boxModel? dimSum(splitter, "border"+opts.side1+"Width", "border"+opts.side2+"Width") : 0;
152                 A._pane = opts.side1;
153                 B._pane = opts.side2;
154                 $.each([A,B], function(){
155                         this._min = opts["min"+this._pane] || dimSum(this, "min-"+opts.split);
156                         this._max = opts["max"+this._pane] || dimSum(this, "max-"+opts.split) || 9999;
157                         this._init = opts["size"+this._pane]===true ?
158                                 parseInt($.curCSS(this[0],opts.split)) : opts["size"+this._pane];
159                 });
160                 
161                 // Determine initial position, get from cookie if specified
162                 var initPos = A._init;
163                 if ( !isNaN(B._init) )  // recalc initial B size as an offset from the top or left side
164                         initPos = splitter[0][opts.pxSplit] - splitter._PBA - B._init - bar._DA;
165                 if ( opts.cookie ) {
166                         if ( !$.cookie )
167                                 alert('jQuery.splitter(): jQuery cookie plugin required');
168                         var ckpos = parseInt($.cookie(opts.cookie));
169                         if ( !isNaN(ckpos) )
170                                 initPos = ckpos;
171                         $(window).bind("unload", function(){
172                                 var state = String(bar.css(opts.origin));       // current location of splitbar
173                                 $.cookie(opts.cookie, state, {expires: opts.cookieExpires || 365, 
174                                         path: opts.cookiePath || document.location.pathname});
175                         });
176                 }
177                 if ( isNaN(initPos) )   // King Solomon's algorithm
178                         initPos = Math.round((splitter[0][opts.pxSplit] - splitter._PBA - bar._DA)/2);
179
180                 // Resize event propagation and splitter sizing
181                 if ( opts.anchorToWindow ) {
182                         // Account for margin or border on the splitter container and enforce min height
183                         splitter._hadjust = dimSum(splitter, "borderTopWidth", "borderBottomWidth", "marginBottom");
184                         splitter._hmin = Math.max(dimSum(splitter, "minHeight"), 20);
185                         $(window).bind("resize", function(){
186                                 var top = splitter.offset().top;
187                                 var wh = $(window).height();
188                                 splitter.css("height", Math.max(wh-top-splitter._hadjust, splitter._hmin)+"px");
189                                 if ( !$.browser.msie ) splitter.trigger("resize");
190                         }).trigger("resize");
191                 }
192                 else if ( opts.resizeToWidth && !$.browser.msie )
193                         $(window).bind("resize", function(){
194                                 splitter.trigger("resize"); 
195                         });
196
197                 // Resize event handler; triggered immediately to set initial position
198                 splitter.bind("resize", function(e, size){
199                         // Custom events bubble in jQuery 1.3; don't Yo Dawg
200                         if ( e.target != this ) return;
201                         // Determine new width/height of splitter container
202                         splitter._DF = splitter[0][opts.pxFixed] - splitter._PBF;
203                         splitter._DA = splitter[0][opts.pxSplit] - splitter._PBA;
204                         // Bail if splitter isn't visible or content isn't there yet
205                         if ( splitter._DF <= 0 || splitter._DA <= 0 ) return;
206                         // Re-divvy the adjustable dimension; maintain size of the preferred pane
207                         resplit(!isNaN(size)? size : (!(opts.sizeRight||opts.sizeBottom)? A[0][opts.pxSplit] :
208                                 splitter._DA-B[0][opts.pxSplit]-bar._DA));
209                 }).trigger("resize" , [initPos]);
210         });
211 };
212
213 })(jQuery);