git.roojs.org Git - roojs1/blob - docs/src/Roo_lib_Motion.js.html

   1 <html><head><title>Roo/lib/Motion.js</title><link rel="stylesheet" type="text/css" href="../../css/highlight-js.css"/></head><body class="highlightpage"><code class="jsdoc-pretty"><span class="jsdoc-comment">/*
   2  * Portions of this file are based on pieces of Yahoo User Interface Library
   3  * Copyright (c) 2007, Yahoo! Inc. All rights reserved.
   4  * YUI licensed under the BSD License:
   5  * http://developer.yahoo.net/yui/license.txt
   6  * &lt;script type=&quot;text/javascript&quot;&gt;
   7  *
   8  */
   9     </span><span class="jsdoc-syntax">(</span><span class="jsdoc-keyword">function</span><span class="jsdoc-syntax">() {
  10         </span><span class="jsdoc-var">Roo.lib.Motion </span><span class="jsdoc-syntax">= </span><span class="jsdoc-keyword">function</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">el</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">attributes</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">duration</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">method</span><span class="jsdoc-syntax">) {
  11             </span><span class="jsdoc-keyword">if </span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">el</span><span class="jsdoc-syntax">) {
  12                 </span><span class="jsdoc-var">Roo.lib.Motion.superclass.constructor.call</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">this</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">el</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">attributes</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">duration</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">method</span><span class="jsdoc-syntax">);
  13             }
  14         };
  15
  16         </span><span class="jsdoc-var">Roo.extend</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">Roo.lib.Motion</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">Roo.lib.ColorAnim</span><span class="jsdoc-syntax">);
  17
  18
  19         </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">Y </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">Roo.lib</span><span class="jsdoc-syntax">;
  20         </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">superclass </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">Y.Motion.superclass</span><span class="jsdoc-syntax">;
  21         </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">proto </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">Y.Motion.prototype</span><span class="jsdoc-syntax">;
  22
  23         </span><span class="jsdoc-var">proto.toString </span><span class="jsdoc-syntax">= </span><span class="jsdoc-keyword">function</span><span class="jsdoc-syntax">() {
  24             </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">el </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">this.getEl</span><span class="jsdoc-syntax">();
  25             </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">id </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">el.id </span><span class="jsdoc-syntax">|| </span><span class="jsdoc-var">el.tagName</span><span class="jsdoc-syntax">;
  26             </span><span class="jsdoc-keyword">return </span><span class="jsdoc-syntax">(</span><span class="jsdoc-string">&quot;Motion &quot; </span><span class="jsdoc-syntax">+ </span><span class="jsdoc-var">id</span><span class="jsdoc-syntax">);
  27         };
  28
  29         </span><span class="jsdoc-var">proto.patterns.points </span><span class="jsdoc-syntax">= /^points$/i;
  30
  31         </span><span class="jsdoc-var">proto.setAttribute </span><span class="jsdoc-syntax">= </span><span class="jsdoc-keyword">function</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">attr</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">val</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">unit</span><span class="jsdoc-syntax">) {
  32             </span><span class="jsdoc-keyword">if </span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">this.patterns.points.test</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">attr</span><span class="jsdoc-syntax">)) {
  33                 </span><span class="jsdoc-var">unit </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">unit </span><span class="jsdoc-syntax">|| </span><span class="jsdoc-string">'px'</span><span class="jsdoc-syntax">;
  34                 </span><span class="jsdoc-var">superclass.setAttribute.call</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">this</span><span class="jsdoc-syntax">, </span><span class="jsdoc-string">'left'</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">val</span><span class="jsdoc-syntax">[0], </span><span class="jsdoc-var">unit</span><span class="jsdoc-syntax">);
  35                 </span><span class="jsdoc-var">superclass.setAttribute.call</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">this</span><span class="jsdoc-syntax">, </span><span class="jsdoc-string">'top'</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">val</span><span class="jsdoc-syntax">[1], </span><span class="jsdoc-var">unit</span><span class="jsdoc-syntax">);
  36             } </span><span class="jsdoc-keyword">else </span><span class="jsdoc-syntax">{
  37                 </span><span class="jsdoc-var">superclass.setAttribute.call</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">this</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">attr</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">val</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">unit</span><span class="jsdoc-syntax">);
  38             }
  39         };
  40
  41         </span><span class="jsdoc-var">proto.getAttribute </span><span class="jsdoc-syntax">= </span><span class="jsdoc-keyword">function</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">attr</span><span class="jsdoc-syntax">) {
  42             </span><span class="jsdoc-keyword">if </span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">this.patterns.points.test</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">attr</span><span class="jsdoc-syntax">)) {
  43                 </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">val </span><span class="jsdoc-syntax">= [
  44                         </span><span class="jsdoc-var">superclass.getAttribute.call</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">this</span><span class="jsdoc-syntax">, </span><span class="jsdoc-string">'left'</span><span class="jsdoc-syntax">),
  45                         </span><span class="jsdoc-var">superclass.getAttribute.call</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">this</span><span class="jsdoc-syntax">, </span><span class="jsdoc-string">'top'</span><span class="jsdoc-syntax">)
  46                         ];
  47             } </span><span class="jsdoc-keyword">else </span><span class="jsdoc-syntax">{
  48                 </span><span class="jsdoc-var">val </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">superclass.getAttribute.call</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">this</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">attr</span><span class="jsdoc-syntax">);
  49             }
  50
  51             </span><span class="jsdoc-keyword">return </span><span class="jsdoc-var">val</span><span class="jsdoc-syntax">;
  52         };
  53
  54         </span><span class="jsdoc-var">proto.doMethod </span><span class="jsdoc-syntax">= </span><span class="jsdoc-keyword">function</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">attr</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">start</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">end</span><span class="jsdoc-syntax">) {
  55             </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">val </span><span class="jsdoc-syntax">= </span><span class="jsdoc-keyword">null</span><span class="jsdoc-syntax">;
  56
  57             </span><span class="jsdoc-keyword">if </span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">this.patterns.points.test</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">attr</span><span class="jsdoc-syntax">)) {
  58                 </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">t </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">this.method</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">this.currentFrame</span><span class="jsdoc-syntax">, 0, 100, </span><span class="jsdoc-var">this.totalFrames</span><span class="jsdoc-syntax">) / 100;
  59                 </span><span class="jsdoc-var">val </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">Y.Bezier.getPosition</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">this.runtimeAttributes</span><span class="jsdoc-syntax">[</span><span class="jsdoc-var">attr</span><span class="jsdoc-syntax">], </span><span class="jsdoc-var">t</span><span class="jsdoc-syntax">);
  60             } </span><span class="jsdoc-keyword">else </span><span class="jsdoc-syntax">{
  61                 </span><span class="jsdoc-var">val </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">superclass.doMethod.call</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">this</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">attr</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">start</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">end</span><span class="jsdoc-syntax">);
  62             }
  63             </span><span class="jsdoc-keyword">return </span><span class="jsdoc-var">val</span><span class="jsdoc-syntax">;
  64         };
  65
  66         </span><span class="jsdoc-var">proto.setRuntimeAttribute </span><span class="jsdoc-syntax">= </span><span class="jsdoc-keyword">function</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">attr</span><span class="jsdoc-syntax">) {
  67             </span><span class="jsdoc-keyword">if </span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">this.patterns.points.test</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">attr</span><span class="jsdoc-syntax">)) {
  68                 </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">el </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">this.getEl</span><span class="jsdoc-syntax">();
  69                 </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">attributes </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">this.attributes</span><span class="jsdoc-syntax">;
  70                 </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">start</span><span class="jsdoc-syntax">;
  71                 </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">control </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">attributes</span><span class="jsdoc-syntax">[</span><span class="jsdoc-string">'points'</span><span class="jsdoc-syntax">][</span><span class="jsdoc-string">'control'</span><span class="jsdoc-syntax">] || [];
  72                 </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">end</span><span class="jsdoc-syntax">;
  73                 </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">i</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">len</span><span class="jsdoc-syntax">;
  74
  75                 </span><span class="jsdoc-keyword">if </span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">control.length </span><span class="jsdoc-syntax">&gt; 0 &amp;&amp; !(</span><span class="jsdoc-var">control</span><span class="jsdoc-syntax">[0] </span><span class="jsdoc-keyword">instanceof </span><span class="jsdoc-var">Array</span><span class="jsdoc-syntax">)) {
  76                     </span><span class="jsdoc-var">control </span><span class="jsdoc-syntax">= [</span><span class="jsdoc-var">control</span><span class="jsdoc-syntax">];
  77                 } </span><span class="jsdoc-keyword">else </span><span class="jsdoc-syntax">{
  78                     </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">tmp </span><span class="jsdoc-syntax">= [];
  79                     </span><span class="jsdoc-keyword">for </span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">i </span><span class="jsdoc-syntax">= 0,</span><span class="jsdoc-var">len </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">control.length</span><span class="jsdoc-syntax">; </span><span class="jsdoc-var">i </span><span class="jsdoc-syntax">&lt; </span><span class="jsdoc-var">len</span><span class="jsdoc-syntax">; ++</span><span class="jsdoc-var">i</span><span class="jsdoc-syntax">) {
  80                         </span><span class="jsdoc-var">tmp</span><span class="jsdoc-syntax">[</span><span class="jsdoc-var">i</span><span class="jsdoc-syntax">] = </span><span class="jsdoc-var">control</span><span class="jsdoc-syntax">[</span><span class="jsdoc-var">i</span><span class="jsdoc-syntax">];
  81                     }
  82                     </span><span class="jsdoc-var">control </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">tmp</span><span class="jsdoc-syntax">;
  83                 }
  84
  85                 </span><span class="jsdoc-var">Roo.fly</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">el</span><span class="jsdoc-syntax">)</span><span class="jsdoc-var">.position</span><span class="jsdoc-syntax">();
  86
  87                 </span><span class="jsdoc-keyword">if </span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">isset</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">attributes</span><span class="jsdoc-syntax">[</span><span class="jsdoc-string">'points'</span><span class="jsdoc-syntax">][</span><span class="jsdoc-string">'from'</span><span class="jsdoc-syntax">])) {
  88                     </span><span class="jsdoc-var">Roo.lib.Dom.setXY</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">el</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">attributes</span><span class="jsdoc-syntax">[</span><span class="jsdoc-string">'points'</span><span class="jsdoc-syntax">][</span><span class="jsdoc-string">'from'</span><span class="jsdoc-syntax">]);
  89                 }
  90                 </span><span class="jsdoc-keyword">else </span><span class="jsdoc-syntax">{
  91                     </span><span class="jsdoc-var">Roo.lib.Dom.setXY</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">el</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">Roo.lib.Dom.getXY</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">el</span><span class="jsdoc-syntax">));
  92                 }
  93
  94                 </span><span class="jsdoc-var">start </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">this.getAttribute</span><span class="jsdoc-syntax">(</span><span class="jsdoc-string">'points'</span><span class="jsdoc-syntax">);
  95
  96
  97                 </span><span class="jsdoc-keyword">if </span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">isset</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">attributes</span><span class="jsdoc-syntax">[</span><span class="jsdoc-string">'points'</span><span class="jsdoc-syntax">][</span><span class="jsdoc-string">'to'</span><span class="jsdoc-syntax">])) {
  98                     </span><span class="jsdoc-var">end </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">translateValues.call</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">this</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">attributes</span><span class="jsdoc-syntax">[</span><span class="jsdoc-string">'points'</span><span class="jsdoc-syntax">][</span><span class="jsdoc-string">'to'</span><span class="jsdoc-syntax">], </span><span class="jsdoc-var">start</span><span class="jsdoc-syntax">);
  99
 100                     </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">pageXY </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">Roo.lib.Dom.getXY</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">this.getEl</span><span class="jsdoc-syntax">());
 101                     </span><span class="jsdoc-keyword">for </span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">i </span><span class="jsdoc-syntax">= 0,</span><span class="jsdoc-var">len </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">control.length</span><span class="jsdoc-syntax">; </span><span class="jsdoc-var">i </span><span class="jsdoc-syntax">&lt; </span><span class="jsdoc-var">len</span><span class="jsdoc-syntax">; ++</span><span class="jsdoc-var">i</span><span class="jsdoc-syntax">) {
 102                         </span><span class="jsdoc-var">control</span><span class="jsdoc-syntax">[</span><span class="jsdoc-var">i</span><span class="jsdoc-syntax">] = </span><span class="jsdoc-var">translateValues.call</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">this</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">control</span><span class="jsdoc-syntax">[</span><span class="jsdoc-var">i</span><span class="jsdoc-syntax">], </span><span class="jsdoc-var">start</span><span class="jsdoc-syntax">);
 103                     }
 104
 105
 106                 } </span><span class="jsdoc-keyword">else if </span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">isset</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">attributes</span><span class="jsdoc-syntax">[</span><span class="jsdoc-string">'points'</span><span class="jsdoc-syntax">][</span><span class="jsdoc-string">'by'</span><span class="jsdoc-syntax">])) {
 107                     </span><span class="jsdoc-var">end </span><span class="jsdoc-syntax">= [ </span><span class="jsdoc-var">start</span><span class="jsdoc-syntax">[0] + </span><span class="jsdoc-var">attributes</span><span class="jsdoc-syntax">[</span><span class="jsdoc-string">'points'</span><span class="jsdoc-syntax">][</span><span class="jsdoc-string">'by'</span><span class="jsdoc-syntax">][0], </span><span class="jsdoc-var">start</span><span class="jsdoc-syntax">[1] + </span><span class="jsdoc-var">attributes</span><span class="jsdoc-syntax">[</span><span class="jsdoc-string">'points'</span><span class="jsdoc-syntax">][</span><span class="jsdoc-string">'by'</span><span class="jsdoc-syntax">][1] ];
 108
 109                     </span><span class="jsdoc-keyword">for </span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">i </span><span class="jsdoc-syntax">= 0,</span><span class="jsdoc-var">len </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">control.length</span><span class="jsdoc-syntax">; </span><span class="jsdoc-var">i </span><span class="jsdoc-syntax">&lt; </span><span class="jsdoc-var">len</span><span class="jsdoc-syntax">; ++</span><span class="jsdoc-var">i</span><span class="jsdoc-syntax">) {
 110                         </span><span class="jsdoc-var">control</span><span class="jsdoc-syntax">[</span><span class="jsdoc-var">i</span><span class="jsdoc-syntax">] = [ </span><span class="jsdoc-var">start</span><span class="jsdoc-syntax">[0] + </span><span class="jsdoc-var">control</span><span class="jsdoc-syntax">[</span><span class="jsdoc-var">i</span><span class="jsdoc-syntax">][0], </span><span class="jsdoc-var">start</span><span class="jsdoc-syntax">[1] + </span><span class="jsdoc-var">control</span><span class="jsdoc-syntax">[</span><span class="jsdoc-var">i</span><span class="jsdoc-syntax">][1] ];
 111                     }
 112                 }
 113
 114                 </span><span class="jsdoc-var">this.runtimeAttributes</span><span class="jsdoc-syntax">[</span><span class="jsdoc-var">attr</span><span class="jsdoc-syntax">] = [</span><span class="jsdoc-var">start</span><span class="jsdoc-syntax">];
 115
 116                 </span><span class="jsdoc-keyword">if </span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">control.length </span><span class="jsdoc-syntax">&gt; 0) {
 117                     </span><span class="jsdoc-var">this.runtimeAttributes</span><span class="jsdoc-syntax">[</span><span class="jsdoc-var">attr</span><span class="jsdoc-syntax">] = </span><span class="jsdoc-var">this.runtimeAttributes</span><span class="jsdoc-syntax">[</span><span class="jsdoc-var">attr</span><span class="jsdoc-syntax">]</span><span class="jsdoc-var">.concat</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">control</span><span class="jsdoc-syntax">);
 118                 }
 119
 120                 </span><span class="jsdoc-var">this.runtimeAttributes</span><span class="jsdoc-syntax">[</span><span class="jsdoc-var">attr</span><span class="jsdoc-syntax">][</span><span class="jsdoc-var">this.runtimeAttributes</span><span class="jsdoc-syntax">[</span><span class="jsdoc-var">attr</span><span class="jsdoc-syntax">]</span><span class="jsdoc-var">.length</span><span class="jsdoc-syntax">] = </span><span class="jsdoc-var">end</span><span class="jsdoc-syntax">;
 121             }
 122             </span><span class="jsdoc-keyword">else </span><span class="jsdoc-syntax">{
 123                 </span><span class="jsdoc-var">superclass.setRuntimeAttribute.call</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">this</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">attr</span><span class="jsdoc-syntax">);
 124             }
 125         };
 126
 127         </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">translateValues </span><span class="jsdoc-syntax">= </span><span class="jsdoc-keyword">function</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">val</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">start</span><span class="jsdoc-syntax">) {
 128             </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">pageXY </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">Roo.lib.Dom.getXY</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">this.getEl</span><span class="jsdoc-syntax">());
 129             </span><span class="jsdoc-var">val </span><span class="jsdoc-syntax">= [ </span><span class="jsdoc-var">val</span><span class="jsdoc-syntax">[0] - </span><span class="jsdoc-var">pageXY</span><span class="jsdoc-syntax">[0] + </span><span class="jsdoc-var">start</span><span class="jsdoc-syntax">[0], </span><span class="jsdoc-var">val</span><span class="jsdoc-syntax">[1] - </span><span class="jsdoc-var">pageXY</span><span class="jsdoc-syntax">[1] + </span><span class="jsdoc-var">start</span><span class="jsdoc-syntax">[1] ];
 130
 131             </span><span class="jsdoc-keyword">return </span><span class="jsdoc-var">val</span><span class="jsdoc-syntax">;
 132         };
 133
 134         </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">isset </span><span class="jsdoc-syntax">= </span><span class="jsdoc-keyword">function</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">prop</span><span class="jsdoc-syntax">) {
 135             </span><span class="jsdoc-keyword">return </span><span class="jsdoc-syntax">(</span><span class="jsdoc-keyword">typeof </span><span class="jsdoc-var">prop </span><span class="jsdoc-syntax">!== </span><span class="jsdoc-string">'undefined'</span><span class="jsdoc-syntax">);
 136         };
 137     })();
 138 </span></code></body></html>