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   1 <html><head><title>Roo/ScrollPanel.js</title><link rel="stylesheet" type="text/css" href="../../css/highlight-js.css"/></head><body class="highlightpage"><code class="jsdoc-pretty">
   2 <span class="jsdoc-var">Roo.ScrollPanel </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">config</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">content</span><span class="jsdoc-syntax">){
   3     </span><span class="jsdoc-var">config </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">config </span><span class="jsdoc-syntax">|| {};
   4     </span><span class="jsdoc-var">config.fitToFrame </span><span class="jsdoc-syntax">= </span><span class="jsdoc-keyword">true</span><span class="jsdoc-syntax">;
   5     </span><span class="jsdoc-var">Roo.ScrollPanel.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">config</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">content</span><span class="jsdoc-syntax">);
   6
   7     </span><span class="jsdoc-var">this.el.dom.style.overflow </span><span class="jsdoc-syntax">= </span><span class="jsdoc-string">&quot;hidden&quot;</span><span class="jsdoc-syntax">;
   8     </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">wrap </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">this.el.wrap</span><span class="jsdoc-syntax">({</span><span class="jsdoc-var">cls</span><span class="jsdoc-syntax">: </span><span class="jsdoc-string">&quot;x-scroller x-layout-inactive-content&quot;</span><span class="jsdoc-syntax">});
   9     </span><span class="jsdoc-var">this.el.removeClass</span><span class="jsdoc-syntax">(</span><span class="jsdoc-string">&quot;x-layout-inactive-content&quot;</span><span class="jsdoc-syntax">);
  10     </span><span class="jsdoc-var">this.el.on</span><span class="jsdoc-syntax">(</span><span class="jsdoc-string">&quot;mousewheel&quot;</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">this.onWheel</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">this</span><span class="jsdoc-syntax">);
  11
  12     </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">up </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">wrap.createChild</span><span class="jsdoc-syntax">({</span><span class="jsdoc-var">cls</span><span class="jsdoc-syntax">: </span><span class="jsdoc-string">&quot;x-scroller-up&quot;</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">html</span><span class="jsdoc-syntax">: </span><span class="jsdoc-string">&quot;&amp;#160;&quot;</span><span class="jsdoc-syntax">}, </span><span class="jsdoc-var">this.el.dom</span><span class="jsdoc-syntax">);
  13     </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">down </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">wrap.createChild</span><span class="jsdoc-syntax">({</span><span class="jsdoc-var">cls</span><span class="jsdoc-syntax">: </span><span class="jsdoc-string">&quot;x-scroller-down&quot;</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">html</span><span class="jsdoc-syntax">: </span><span class="jsdoc-string">&quot;&amp;#160;&quot;</span><span class="jsdoc-syntax">});
  14     </span><span class="jsdoc-var">up.unselectable</span><span class="jsdoc-syntax">(); </span><span class="jsdoc-var">down.unselectable</span><span class="jsdoc-syntax">();
  15     </span><span class="jsdoc-var">up.on</span><span class="jsdoc-syntax">(</span><span class="jsdoc-string">&quot;click&quot;</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">this.scrollUp</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">this</span><span class="jsdoc-syntax">);
  16     </span><span class="jsdoc-var">down.on</span><span class="jsdoc-syntax">(</span><span class="jsdoc-string">&quot;click&quot;</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">this.scrollDown</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">this</span><span class="jsdoc-syntax">);
  17     </span><span class="jsdoc-var">up.addClassOnOver</span><span class="jsdoc-syntax">(</span><span class="jsdoc-string">&quot;x-scroller-btn-over&quot;</span><span class="jsdoc-syntax">);
  18     </span><span class="jsdoc-var">down.addClassOnOver</span><span class="jsdoc-syntax">(</span><span class="jsdoc-string">&quot;x-scroller-btn-over&quot;</span><span class="jsdoc-syntax">);
  19     </span><span class="jsdoc-var">up.addClassOnClick</span><span class="jsdoc-syntax">(</span><span class="jsdoc-string">&quot;x-scroller-btn-click&quot;</span><span class="jsdoc-syntax">);
  20     </span><span class="jsdoc-var">down.addClassOnClick</span><span class="jsdoc-syntax">(</span><span class="jsdoc-string">&quot;x-scroller-btn-click&quot;</span><span class="jsdoc-syntax">);
  21     </span><span class="jsdoc-var">this.adjustments </span><span class="jsdoc-syntax">= [0, -(</span><span class="jsdoc-var">up.getHeight</span><span class="jsdoc-syntax">() + </span><span class="jsdoc-var">down.getHeight</span><span class="jsdoc-syntax">())];
  22
  23     </span><span class="jsdoc-var">this.resizeEl </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">this.el</span><span class="jsdoc-syntax">;
  24     </span><span class="jsdoc-var">this.el </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">wrap</span><span class="jsdoc-syntax">; </span><span class="jsdoc-var">this.up </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">up</span><span class="jsdoc-syntax">; </span><span class="jsdoc-var">this.down </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">down</span><span class="jsdoc-syntax">;
  25 };
  26
  27 </span><span class="jsdoc-var">Roo.extend</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">Roo.ScrollPanel</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">Roo.panel.Content</span><span class="jsdoc-syntax">, {
  28     </span><span class="jsdoc-var">increment </span><span class="jsdoc-syntax">: 100,
  29     </span><span class="jsdoc-var">wheelIncrement </span><span class="jsdoc-syntax">: 5,
  30     </span><span class="jsdoc-var">scrollUp </span><span class="jsdoc-syntax">: </span><span class="jsdoc-keyword">function</span><span class="jsdoc-syntax">(){
  31         </span><span class="jsdoc-var">this.resizeEl.scroll</span><span class="jsdoc-syntax">(</span><span class="jsdoc-string">&quot;up&quot;</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">this.increment</span><span class="jsdoc-syntax">, {</span><span class="jsdoc-var">callback</span><span class="jsdoc-syntax">: </span><span class="jsdoc-var">this.afterScroll</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">scope</span><span class="jsdoc-syntax">: </span><span class="jsdoc-var">this</span><span class="jsdoc-syntax">});
  32     },
  33
  34     </span><span class="jsdoc-var">scrollDown </span><span class="jsdoc-syntax">: </span><span class="jsdoc-keyword">function</span><span class="jsdoc-syntax">(){
  35         </span><span class="jsdoc-var">this.resizeEl.scroll</span><span class="jsdoc-syntax">(</span><span class="jsdoc-string">&quot;down&quot;</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">this.increment</span><span class="jsdoc-syntax">, {</span><span class="jsdoc-var">callback</span><span class="jsdoc-syntax">: </span><span class="jsdoc-var">this.afterScroll</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">scope</span><span class="jsdoc-syntax">: </span><span class="jsdoc-var">this</span><span class="jsdoc-syntax">});
  36     },
  37
  38     </span><span class="jsdoc-var">afterScroll </span><span class="jsdoc-syntax">: </span><span class="jsdoc-keyword">function</span><span class="jsdoc-syntax">(){
  39         </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">el </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">this.resizeEl</span><span class="jsdoc-syntax">;
  40         </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">t </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">el.dom.scrollTop</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">h </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">el.dom.scrollHeight</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">ch </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">el.dom.clientHeight</span><span class="jsdoc-syntax">;
  41         </span><span class="jsdoc-var">this.up</span><span class="jsdoc-syntax">[</span><span class="jsdoc-var">t </span><span class="jsdoc-syntax">== 0 ? </span><span class="jsdoc-string">&quot;addClass&quot; </span><span class="jsdoc-syntax">: </span><span class="jsdoc-string">&quot;removeClass&quot;</span><span class="jsdoc-syntax">](</span><span class="jsdoc-string">&quot;x-scroller-btn-disabled&quot;</span><span class="jsdoc-syntax">);
  42         </span><span class="jsdoc-var">this.down</span><span class="jsdoc-syntax">[</span><span class="jsdoc-var">h </span><span class="jsdoc-syntax">- </span><span class="jsdoc-var">t </span><span class="jsdoc-syntax">&lt;= </span><span class="jsdoc-var">ch </span><span class="jsdoc-syntax">? </span><span class="jsdoc-string">&quot;addClass&quot; </span><span class="jsdoc-syntax">: </span><span class="jsdoc-string">&quot;removeClass&quot;</span><span class="jsdoc-syntax">](</span><span class="jsdoc-string">&quot;x-scroller-btn-disabled&quot;</span><span class="jsdoc-syntax">);
  43     },
  44
  45     </span><span class="jsdoc-var">setSize </span><span class="jsdoc-syntax">: </span><span class="jsdoc-keyword">function</span><span class="jsdoc-syntax">(){
  46         </span><span class="jsdoc-var">Roo.ScrollPanel.superclass.setSize.apply</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">this</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">arguments</span><span class="jsdoc-syntax">);
  47         </span><span class="jsdoc-var">this.afterScroll</span><span class="jsdoc-syntax">();
  48     },
  49
  50     </span><span class="jsdoc-var">onWheel </span><span class="jsdoc-syntax">: </span><span class="jsdoc-keyword">function</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">e</span><span class="jsdoc-syntax">){
  51         </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">d </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">e.getWheelDelta</span><span class="jsdoc-syntax">();
  52         </span><span class="jsdoc-var">this.resizeEl.dom.scrollTop </span><span class="jsdoc-syntax">-= (</span><span class="jsdoc-var">d</span><span class="jsdoc-syntax">*</span><span class="jsdoc-var">this.wheelIncrement</span><span class="jsdoc-syntax">);
  53         </span><span class="jsdoc-var">this.afterScroll</span><span class="jsdoc-syntax">();
  54         </span><span class="jsdoc-var">e.stopEvent</span><span class="jsdoc-syntax">();
  55     },
  56
  57     </span><span class="jsdoc-var">setContent </span><span class="jsdoc-syntax">: </span><span class="jsdoc-keyword">function</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">content</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">loadScripts</span><span class="jsdoc-syntax">){
  58         </span><span class="jsdoc-var">this.resizeEl.update</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">content</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">loadScripts</span><span class="jsdoc-syntax">);
  59     }
  60
  61 });
  62 </span></code></body></html>