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   1 <html><head><title>Roo/util/TaskRunner.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  * Based on:
   3  * Ext JS Library 1.1.1
   4  * Copyright(c) 2006-2007, Ext JS, LLC.
   5  *
   6  * Originally Released Under LGPL - original licence link has changed is not relivant.
   7  *
   8  * Fork - LGPL
   9  * &lt;script type=&quot;text/javascript&quot;&gt;
  10  */
  11
  12
  13 </span><span class="jsdoc-var">Roo.util.TaskRunner </span><span class="jsdoc-syntax">= </span><span class="jsdoc-keyword">function</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">interval</span><span class="jsdoc-syntax">){
  14     </span><span class="jsdoc-var">interval </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">interval </span><span class="jsdoc-syntax">|| 10;
  15     </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">tasks </span><span class="jsdoc-syntax">= [], </span><span class="jsdoc-var">removeQueue </span><span class="jsdoc-syntax">= [];
  16     </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">id </span><span class="jsdoc-syntax">= 0;
  17     </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">running </span><span class="jsdoc-syntax">= </span><span class="jsdoc-keyword">false</span><span class="jsdoc-syntax">;
  18
  19     </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">stopThread </span><span class="jsdoc-syntax">= </span><span class="jsdoc-keyword">function</span><span class="jsdoc-syntax">(){
  20         </span><span class="jsdoc-var">running </span><span class="jsdoc-syntax">= </span><span class="jsdoc-keyword">false</span><span class="jsdoc-syntax">;
  21         </span><span class="jsdoc-var">clearInterval</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">id</span><span class="jsdoc-syntax">);
  22         </span><span class="jsdoc-var">id </span><span class="jsdoc-syntax">= 0;
  23     };
  24
  25     </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">startThread </span><span class="jsdoc-syntax">= </span><span class="jsdoc-keyword">function</span><span class="jsdoc-syntax">(){
  26         </span><span class="jsdoc-keyword">if</span><span class="jsdoc-syntax">(!</span><span class="jsdoc-var">running</span><span class="jsdoc-syntax">){
  27             </span><span class="jsdoc-var">running </span><span class="jsdoc-syntax">= </span><span class="jsdoc-keyword">true</span><span class="jsdoc-syntax">;
  28             </span><span class="jsdoc-var">id </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">setInterval</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">runTasks</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">interval</span><span class="jsdoc-syntax">);
  29         }
  30     };
  31
  32     </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">removeTask </span><span class="jsdoc-syntax">= </span><span class="jsdoc-keyword">function</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">task</span><span class="jsdoc-syntax">){
  33         </span><span class="jsdoc-var">removeQueue.push</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">task</span><span class="jsdoc-syntax">);
  34         </span><span class="jsdoc-keyword">if</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">task.onStop</span><span class="jsdoc-syntax">){
  35             </span><span class="jsdoc-var">task.onStop</span><span class="jsdoc-syntax">();
  36         }
  37     };
  38
  39     </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">runTasks </span><span class="jsdoc-syntax">= </span><span class="jsdoc-keyword">function</span><span class="jsdoc-syntax">(){
  40         </span><span class="jsdoc-keyword">if</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">removeQueue.length </span><span class="jsdoc-syntax">&gt; 0){
  41             </span><span class="jsdoc-keyword">for</span><span class="jsdoc-syntax">(</span><span class="jsdoc-keyword">var </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">removeQueue.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">++){
  42                 </span><span class="jsdoc-var">tasks.remove</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">removeQueue</span><span class="jsdoc-syntax">[</span><span class="jsdoc-var">i</span><span class="jsdoc-syntax">]);
  43             }
  44             </span><span class="jsdoc-var">removeQueue </span><span class="jsdoc-syntax">= [];
  45             </span><span class="jsdoc-keyword">if</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">tasks.length </span><span class="jsdoc-syntax">&lt; 1){
  46                 </span><span class="jsdoc-var">stopThread</span><span class="jsdoc-syntax">();
  47                 </span><span class="jsdoc-keyword">return</span><span class="jsdoc-syntax">;
  48             }
  49         }
  50         </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">now </span><span class="jsdoc-syntax">= </span><span class="jsdoc-keyword">new </span><span class="jsdoc-var">Date</span><span class="jsdoc-syntax">()</span><span class="jsdoc-var">.getTime</span><span class="jsdoc-syntax">();
  51         </span><span class="jsdoc-keyword">for</span><span class="jsdoc-syntax">(</span><span class="jsdoc-keyword">var </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">tasks.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">){
  52             </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">t </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">tasks</span><span class="jsdoc-syntax">[</span><span class="jsdoc-var">i</span><span class="jsdoc-syntax">];
  53             </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">itime </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">now </span><span class="jsdoc-syntax">- </span><span class="jsdoc-var">t.taskRunTime</span><span class="jsdoc-syntax">;
  54             </span><span class="jsdoc-keyword">if</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">t.interval </span><span class="jsdoc-syntax">&lt;= </span><span class="jsdoc-var">itime</span><span class="jsdoc-syntax">){
  55                 </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">rt </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">t.run.apply</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">t.scope </span><span class="jsdoc-syntax">|| </span><span class="jsdoc-var">t</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">t.args </span><span class="jsdoc-syntax">|| [++</span><span class="jsdoc-var">t.taskRunCount</span><span class="jsdoc-syntax">]);
  56                 </span><span class="jsdoc-var">t.taskRunTime </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">now</span><span class="jsdoc-syntax">;
  57                 </span><span class="jsdoc-keyword">if</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">rt </span><span class="jsdoc-syntax">=== </span><span class="jsdoc-keyword">false </span><span class="jsdoc-syntax">|| </span><span class="jsdoc-var">t.taskRunCount </span><span class="jsdoc-syntax">=== </span><span class="jsdoc-var">t.repeat</span><span class="jsdoc-syntax">){
  58                     </span><span class="jsdoc-var">removeTask</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">t</span><span class="jsdoc-syntax">);
  59                     </span><span class="jsdoc-keyword">return</span><span class="jsdoc-syntax">;
  60                 }
  61             }
  62             </span><span class="jsdoc-keyword">if</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">t.duration </span><span class="jsdoc-syntax">&amp;&amp; </span><span class="jsdoc-var">t.duration </span><span class="jsdoc-syntax">&lt;= (</span><span class="jsdoc-var">now </span><span class="jsdoc-syntax">- </span><span class="jsdoc-var">t.taskStartTime</span><span class="jsdoc-syntax">)){
  63                 </span><span class="jsdoc-var">removeTask</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">t</span><span class="jsdoc-syntax">);
  64             }
  65         }
  66     };
  67
  68     </span><span class="jsdoc-comment">/**
  69      * Queues a new task.
  70      * @param {Object} task
  71      */
  72     </span><span class="jsdoc-var">this.start </span><span class="jsdoc-syntax">= </span><span class="jsdoc-keyword">function</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">task</span><span class="jsdoc-syntax">){
  73         </span><span class="jsdoc-var">tasks.push</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">task</span><span class="jsdoc-syntax">);
  74         </span><span class="jsdoc-var">task.taskStartTime </span><span class="jsdoc-syntax">= </span><span class="jsdoc-keyword">new </span><span class="jsdoc-var">Date</span><span class="jsdoc-syntax">()</span><span class="jsdoc-var">.getTime</span><span class="jsdoc-syntax">();
  75         </span><span class="jsdoc-var">task.taskRunTime </span><span class="jsdoc-syntax">= 0;
  76         </span><span class="jsdoc-var">task.taskRunCount </span><span class="jsdoc-syntax">= 0;
  77         </span><span class="jsdoc-var">startThread</span><span class="jsdoc-syntax">();
  78         </span><span class="jsdoc-keyword">return </span><span class="jsdoc-var">task</span><span class="jsdoc-syntax">;
  79     };
  80
  81     </span><span class="jsdoc-var">this.stop </span><span class="jsdoc-syntax">= </span><span class="jsdoc-keyword">function</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">task</span><span class="jsdoc-syntax">){
  82         </span><span class="jsdoc-var">removeTask</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">task</span><span class="jsdoc-syntax">);
  83         </span><span class="jsdoc-keyword">return </span><span class="jsdoc-var">task</span><span class="jsdoc-syntax">;
  84     };
  85
  86     </span><span class="jsdoc-var">this.stopAll </span><span class="jsdoc-syntax">= </span><span class="jsdoc-keyword">function</span><span class="jsdoc-syntax">(){
  87         </span><span class="jsdoc-var">stopThread</span><span class="jsdoc-syntax">();
  88         </span><span class="jsdoc-keyword">for</span><span class="jsdoc-syntax">(</span><span class="jsdoc-keyword">var </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">tasks.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">++){
  89             </span><span class="jsdoc-keyword">if</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">tasks</span><span class="jsdoc-syntax">[</span><span class="jsdoc-var">i</span><span class="jsdoc-syntax">]</span><span class="jsdoc-var">.onStop</span><span class="jsdoc-syntax">){
  90                 </span><span class="jsdoc-var">tasks</span><span class="jsdoc-syntax">[</span><span class="jsdoc-var">i</span><span class="jsdoc-syntax">]</span><span class="jsdoc-var">.onStop</span><span class="jsdoc-syntax">();
  91             }
  92         }
  93         </span><span class="jsdoc-var">tasks </span><span class="jsdoc-syntax">= [];
  94         </span><span class="jsdoc-var">removeQueue </span><span class="jsdoc-syntax">= [];
  95     };
  96 };
  97
  98 </span><span class="jsdoc-var">Roo.TaskMgr </span><span class="jsdoc-syntax">= </span><span class="jsdoc-keyword">new </span><span class="jsdoc-var">Roo.util.TaskRunner</span><span class="jsdoc-syntax">();</span></code></body></html>