chao
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mini_cocopi


			
				
					
						
						
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							<!DOCTYPE html>
<html>
<!--
Copyright 2008 The Closure Library Authors. All Rights Reserved.

Use of this source code is governed by the Apache License, Version 2.0.
See the COPYING file for details.
-->
<!--
Author:  attila@google.com (Attila Bodis)
-->
<head>
<meta http-equiv="X-UA-Compatible" content="IE=edge">
  <title>Closure Performance Tests - goog.ui.Control</title>
  <link rel="stylesheet" type="text/css" href="../testing/performancetable.css" />
  <script src="../base.js"></script>
  <script>
    goog.require('goog.dom');
    goog.require('goog.testing.PerformanceTable');
    goog.require('goog.testing.jsunit');
    goog.require('goog.ui.Control');
    goog.require('goog.dom.TagName');
  </script>
</head>
<body>
  <h1>goog.ui.Control Performance Tests</h1>
  <p>
    <b>User-agent:</b> <script>document.write(navigator.userAgent);</script>
  </p>
  <div id="perfTable"></div>
  <hr>
  <div id="renderSandbox"></div>
  <div id="decorateSandbox"></div>
  <script>
    // The sandboxen.
    var renderSandbox = goog.dom.getElement('renderSandbox');
    var decorateSandbox = goog.dom.getElement('decorateSandbox');

    // Arrays of rendered/decorated controls (so we can dispose of them).
    var renderedControls;
    var decoratedControls;

    // 0-based index of the control currently being rendered/decorated.
    var renderIndex;
    var decorateIndex;

    // Element currently being decorated.
    var elementToDecorate;

    // Number of controls to create/decorate per test run.
    var SAMPLES_PER_RUN = 100;

    // The performance table.
    var table;

    // Sets up a render test.
    function setUpRenderTest() {
      renderedControls = [];
      renderIndex = 0;
    }

    // Cleans up after a render test.
    function cleanUpAfterRenderTest() {
      for (var i = 0, count = renderedControls.length; i < count; i++) {
        renderedControls[i].dispose();
      }
      renderedControls = null;
      goog.dom.removeChildren(renderSandbox);
    }

    // Sets up a decorate test.
    function setUpDecorateTest(opt_count) {
      var count = opt_count || 1000;
      for (var i = 0; i < count; i++) {
        decorateSandbox.appendChild(goog.dom.createDom(goog.dom.TagName.DIV, 'goog-control',
            'W00t!'));
      }
      elementToDecorate = decorateSandbox.firstChild;
      decoratedControls = [];
      decorateIndex = 0;
    }

    // Cleans up after a decorate test.
    function cleanUpAfterDecorateTest() {
      for (var i = 0, count = decoratedControls.length; i < count; i++) {
        decoratedControls[i].dispose();
      }
      decoratedControls = null;
      goog.dom.removeChildren(decorateSandbox);
    }

    // Renders the given number of controls.  Since children are appended to
    // the same parent element in each performance test run, we keep track of
    // the current index via the global renderIndex variable.
    function renderControls(count, autoDetectBiDi) {
      for (var i = 0; i < count; i++) {
        var control = new goog.ui.Control('W00t!');
        if (!autoDetectBiDi) {
          control.setRightToLeft(false);
        }
        control.render(renderSandbox);
        renderedControls[renderIndex++] = control;
      }
    }

    // Decorates "count" controls.  The decorate sandbox contains enough child
    // elements for the whole test, but we only decorate up to "count" elements
    // per test run, so we need to keep track of where we are via the global
    // decorateIndex and elementToDecorate variables.
    function decorateControls(count, autoDetectBiDi) {
      for (var i = 0; i < count; i++) {
        var next = elementToDecorate.nextSibling;
        var control = new goog.ui.Control();
        if (!autoDetectBiDi) {
          control.setRightToLeft(false);
        }
        control.decorate(elementToDecorate);
        decoratedControls[decorateIndex++] = control;
        elementToDecorate = next;
      }
    }

    function setUpPage() {
      table = new goog.testing.PerformanceTable(
          goog.dom.getElement('perfTable'));
    }

    function testRender() {
      setUpRenderTest();
      table.run(goog.partial(renderControls, SAMPLES_PER_RUN, true),
          'Render ' + SAMPLES_PER_RUN + ' controls (default)');
      cleanUpAfterRenderTest();
      assertEquals('The expected number of controls must have been rendered',
          SAMPLES_PER_RUN * table.getTimer().getNumSamples(), renderIndex);
    }

    function testDecorate() {
      setUpDecorateTest(SAMPLES_PER_RUN * table.getTimer().getNumSamples());
      table.run(goog.partial(decorateControls, SAMPLES_PER_RUN, true),
          'Decorate ' + SAMPLES_PER_RUN + ' controls (default)');
      cleanUpAfterDecorateTest();
      assertEquals('The expected number of controls must have been decorated',
          SAMPLES_PER_RUN * table.getTimer().getNumSamples(), decorateIndex);
      assertNull('All controls must have been decorated', elementToDecorate);
    }

    function testRenderNoBiDiAutoDetect() {
      setUpRenderTest();
      table.run(goog.partial(renderControls, SAMPLES_PER_RUN, false),
          'Render ' + SAMPLES_PER_RUN + ' controls (no BiDi auto-detect)');
      cleanUpAfterRenderTest();
      assertEquals('The expected number of controls must have been rendered',
          SAMPLES_PER_RUN * table.getTimer().getNumSamples(), renderIndex);
    }

    function testDecorateNoBiDiAutoDetect() {
      setUpDecorateTest(SAMPLES_PER_RUN * table.getTimer().getNumSamples());
      table.run(goog.partial(decorateControls, SAMPLES_PER_RUN, false),
          'Decorate ' + SAMPLES_PER_RUN + ' controls (no BiDi auto-detect)');
      cleanUpAfterDecorateTest();
      assertEquals('The expected number of controls must have been decorated',
          SAMPLES_PER_RUN * table.getTimer().getNumSamples(), decorateIndex);
      assertNull('All controls must have been decorated', elementToDecorate);
    }
  </script>
</body>
</html>