gecko/accessible/tests/mochitest/test_events_tree.xul

<?xml version="1.0"?>
<?xml-stylesheet href="chrome://global/skin" type="text/css"?>
<?xml-stylesheet href="chrome://mochikit/content/tests/SimpleTest/test.css"
                 type="text/css"?>

<!--
  Bug 368835 - fire TreeViewChanged/TreeRowCountChanged events.
  Bug 308564 - no accessibility events when data in a tree row changes.
-->

<window xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
        title="DOM TreeViewChanged/TreeRowCountChanged and a11y name change events.">

  <script type="application/javascript" 
          src="chrome://mochikit/content/MochiKit/packed.js" />
  <script type="application/javascript"
          src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js" />

  <script type="application/javascript"
          src="chrome://mochikit/content/a11y/accessible/treeview.js" />

  <script type="application/javascript"
          src="chrome://mochikit/content/a11y/accessible/common.js" />
  <script type="application/javascript"
          src="chrome://mochikit/content/a11y/accessible/events.js" />

  <script type="application/javascript">
  <![CDATA[

    ////////////////////////////////////////////////////////////////////////////
    // Invoker's checkers

    /**
     * Check TreeRowCountChanged event.
     */
    function rowCountChangedChecker(aMsg, aIdx, aCount)
    {
      this.type = "TreeRowCountChanged";
      this.target = gTree;
      this.check = function check(aEvent)
      {
        var index = aEvent.getData("index");
        is(index, aIdx, "Wrong 'index' data of 'treeRowCountChanged' event.");

        var count = aEvent.getData("count");
        is(count, aCount, "Wrong 'count' data of 'treeRowCountChanged' event.");
      }
      this.getID = function getID()
      {
        return aMsg + "TreeRowCountChanged";
      }
    }

    /**
     * Check TreeInvalidated event.
     */
    function treeInvalidatedChecker(aMsg, aStartRow, aEndRow, aStartCol, aEndCol)
    {
      this.type = "TreeInvalidated";
      this.target = gTree;
      this.check = function check(aEvent)
      {
        var startRow = aEvent.getData("startrow");
        is(startRow, aStartRow,
           "Wrong 'startrow' of 'treeInvalidated' event on " + aMsg);

        var endRow = aEvent.getData("endrow");
        is(endRow, aEndRow,
           "Wrong 'endrow' of 'treeInvalidated' event on " + aMsg);

        var startCol = aEvent.getData("startcolumn");
        is(startCol, aStartCol,
           "Wrong 'startcolumn' of 'treeInvalidated' event on " + aMsg);

        var endCol = aEvent.getData("endcolumn");
        is(endCol, aEndCol,
           "Wrong 'endcolumn' of 'treeInvalidated' event on " + aMsg);
      }
      this.getID = function getID()
      {
        return "TreeInvalidated on " + aMsg;
      }
    }

    /**
     * Check name changed a11y event.
     */
    function nameChangeChecker(aMsg, aRow, aCol)
    {
      this.type = EVENT_NAME_CHANGE;

      this.target getter = function()
      {
        var acc = getAccessible(gTree);

        var tableAcc = getAccessible(acc, [nsIAccessibleTable], null,
                                     DONOTFAIL_IF_NO_INTERFACE);

        if (tableAcc)
          return tableAcc.cellRefAt(aRow, aCol);

        return acc.getChildAt(aRow + 1);
      }
      this.getID = function getID()
      {
        return aMsg + "name changed";
      }
    }

    ////////////////////////////////////////////////////////////////////////////
    // Invokers

    /**
     * Set tree view and process TreeViewChanged handler.
     */
    function setTreeView()
    {
      this.invoke = function setTreeView_invoke()
      {
        gTreeBox.view = gView;
      }

      this.getID = function setTreeView_getID() { return "TreeViewChanged"; }

      this.eventSeq = [["TreeViewChanged", gTree]];
    };

    /**
     * Insert row at 0 index and checks TreeRowCountChanged and TreeInvalidated
     * event.
     */
    function insertRow()
    {
      this.invoke = function insertRow_invoke()
      {
        ++gView.mRowCount;
        gTreeBox.rowCountChanged(0, 1);
      }

      this.eventSeq =
      [
        new rowCountChangedChecker("insertRow: ", 0, 1),
        new treeInvalidatedChecker("insertRow", 0, 5, null, null)
      ];
    }

    /**
     * Invalidates first column and checks six name changed events for each
     * treeitem plus TreeInvalidated event.
     */
    function invalidateColumn()
    {
      this.invoke = function()
      {
        // Make sure accessibles for the tree is created because it makes
        // sure accessible events will be fired.
        var treeAcc = getAccessible(gTree);

        // Makes sure tree children accessibles are created otherwise they won't
        // be a cause of name changed events.
        var children = treeAcc.children;

        // Fire 'TreeInvalidated' event by InvalidateColumn()
        var firstCol = gTree.columns.getFirstColumn();
        for (var i = 0; i < gView.mRowCount; i++) {
          var key = String(i) + firstCol.id;
          gView.mData[key] = key + "_col";
        }

        gTreeBox.invalidateColumn(firstCol);
      }

      this.eventSeq =
      [
        new nameChangeChecker("invalidateColumn: ", 0, 0),
        new nameChangeChecker("invalidateColumn: ", 1, 0),
        new nameChangeChecker("invalidateColumn: ", 2, 0),
        new nameChangeChecker("invalidateColumn: ", 3, 0),
        new nameChangeChecker("invalidateColumn: ", 4, 0),
        new nameChangeChecker("invalidateColumn: ", 5, 0),
        new treeInvalidatedChecker("invalidateColumn", null, null, 0, 0)
      ];
    }

    /**
     * Invalidates second row and checks name changed event for first treeitem
     * (note, there are two name changed events on linux due to different
     * accessible tree for xul:tree element) plus TreeInvalidated event.
     */
    function invalidateRow()
    {
      this.invoke = function()
      {
        // Fire 'TreeInvalidated' event by InvalidateRow()
        var colCount = gTree.columns.count;
        for (var i = 0; i < colCount; i++) {
          var key = "1" + gTree.columns.getColumnAt(i).id;
          gView.mData[key] = key + "_row";
        }

        gTreeBox.invalidateRow(1);
      }

      this.eventSeq =
      [
        new nameChangeChecker("invalidateColumn: ", 1, 0),
        new treeInvalidatedChecker("invalidateColumn", 1, 1, null, null)
      ];
    }

    ////////////////////////////////////////////////////////////////////////////
    // Test

    var gTree = null;
    var gTreeBox = null;
    var gTreeView = null;
    var gQueue = null;

    // gA11yEventDumpID = "debug";

    function doTest()
    {
      // Initialize the tree
      gTree = document.getElementById("tree");
      gTreeBox = gTree.treeBoxObject;

      gView = new inTreeView();
      gView.mRowCount = 5;

      // Perform actions
      gQueue = new eventQueue();

      gQueue.push(new setTreeView());
      gQueue.push(new insertRow());
      gQueue.push(new invalidateColumn());
      gQueue.push(new invalidateRow());

      gQueue.invoke();
    }

    SimpleTest.waitForExplicitFinish();
    addA11yLoadEvent(doTest);
  ]]>
  </script>

  <hbox flex="1" style="overflow: auto;">
    <body xmlns="http://www.w3.org/1999/xhtml">
      <a target="_blank"
         href="https://bugzilla.mozilla.org/show_bug.cgi?id=368835"
         title="Fire TreeViewChanged/TreeRowCountChanged events.">
        Mozilla Bug 368835
      </a><br/>
      <a target="_blank"
         href="https://bugzilla.mozilla.org/show_bug.cgi?id=308564"
         title="No accessibility events when data in a tree row changes.">
        Mozilla Bug 308564
      </a>
      <p id="display"></p>
      <div id="content" style="display: none">
      </div>
      <pre id="test">
      </pre>
    </body>

    <vbox id="debug"/>
    <tree id="tree" flex="1">
      <treecols>
        <treecol id="col" flex="1" primary="true" label="column"/>
        <treecol id="scol" flex="1" label="column 2"/>
      </treecols>
      <treechildren id="treechildren"/>
    </tree>
  </hbox>

</window>