toolkit/content/widgets/findbar.xml
author Justin Wood <Callek@gmail.com>
Fri, 04 Jun 2010 21:59:40 -0400
changeset 43112 28086cf6ede84358c8d4a05be6596594a0853e5f
parent 43111 ba82b6ecb9ce7211536377aadd5754bdf37d4854
child 43313 33760547ecf7edc099b4ca4abc5cb475d9dfb86a
permissions -rw-r--r--
Backout |Bug 567306 - Find command(ctrl+F) does not start looking for it with a selected text on the actual page.| due to Linux Mo(oth) and Linux64 Mo(oth) test failures.

<?xml version="1.0"?>

<!-- ***** BEGIN LICENSE BLOCK *****
   - Version: MPL 1.1/GPL 2.0/LGPL 2.1
   -
   - The contents of this file are subject to the Mozilla Public License Version
   - 1.1 (the "License"); you may not use this file except in compliance with
   - the License. You may obtain a copy of the License at
   - http://www.mozilla.org/MPL/
   -
   - Software distributed under the License is distributed on an "AS IS" basis,
   - WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
   - for the specific language governing rights and limitations under the
   - License.
   -
   - The Original Code is mozilla.org viewsource frontend.
   -
   - The Initial Developer of the Original Code is
   - Netscape Communications Corporation.
   - Portions created by the Initial Developer are Copyright (C) 2003
   - the Initial Developer. All Rights Reserved.
   -
   - Contributor(s):
   -     Blake Ross <blake@cs.stanford.edu> (Original Author)
   -     Masayuki Nakano <masayuki@d-toybox.com>
   -     Ben Basson <contact@cusser.net>
   -     Jason Barnabe <jason_barnabe@fastmail.fm>
   -     Asaf Romano <mano@mozilla.com>
   -     Ehsan Akhgari <ehsan.akhgari@gmail.com>
   -     Graeme McCutcheon <graememcc_firefox@graeme-online.co.uk>
   -
   - Alternatively, the contents of this file may be used under the terms of
   - either the GNU General Public License Version 2 or later (the "GPL"), or
   - the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
   - in which case the provisions of the GPL or the LGPL are applicable instead
   - of those above. If you wish to allow use of your version of this file only
   - under the terms of either the GPL or the LGPL, and not to allow others to
   - use your version of this file under the terms of the MPL, indicate your
   - decision by deleting the provisions above and replace them with the notice
   - and other provisions required by the GPL or the LGPL. If you do not delete
   - the provisions above, a recipient may use your version of this file under
   - the terms of any one of the MPL, the GPL or the LGPL.
   -
   - ***** END LICENSE BLOCK ***** -->

<!DOCTYPE bindings [
<!ENTITY % findBarDTD SYSTEM "chrome://global/locale/findbar.dtd" >
%findBarDTD;
]>

<bindings id="findbarBindings"
   xmlns="http://www.mozilla.org/xbl"
   xmlns:xul="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
   xmlns:xbl="http://www.mozilla.org/xbl">

  <!-- Private binding -->
  <binding id="findbar-textbox"
           extends="chrome://global/content/bindings/textbox.xml#textbox">
    <implementation>

      <field name="_findbar">null</field>
      <property name="findbar" readonly="true">
        <getter>
          return this._findbar ?
                 this._findbar : this._findbar = document.getBindingParent(this);
        </getter>
      </property>

      <method name="_handleEnter">
        <parameter name="aEvent"/>
        <body><![CDATA[
          if (this.findbar._findMode == this.findbar.FIND_NORMAL) {
            var findString = this.findbar._findField;
            if (!findString.value)
              return;
#ifdef XP_MACOSX
            if (aEvent.metaKey) {
#else
            if (aEvent.ctrlKey) {
#endif
              this.findbar.getElement("highlight").click();
              return;
            }

            this.findbar.onFindAgainCommand(aEvent.shiftKey);
          }
          else {
            // We need to keep a reference to _foundLink because
            // _finishFAYT resets it to null.
            var tmpLink = this._findbar._foundLink;
            if (tmpLink && this.findbar._finishFAYT(aEvent))
              this.findbar._dispatchKeypressEvent(tmpLink, aEvent);
          }
        ]]></body>
      </method>

      <method name="_handleTab">
        <parameter name="aEvent"/>
        <body><![CDATA[
          var shouldHandle = !aEvent.altKey && !aEvent.ctrlKey &&
                             !aEvent.metaKey;
          if (shouldHandle &&
              this.findbar._findMode != this.findbar.FIND_NORMAL &&
              this.findbar._finishFAYT(aEvent)) {
            if (aEvent.shiftKey)
              document.commandDispatcher.rewindFocus();
            else
              document.commandDispatcher.advanceFocus();
          }
        ]]></body>
      </method>
    </implementation>

    <handlers>
      <handler event="input"><![CDATA[
        this.findbar._find(this.value);
      ]]></handler>

      <handler event="keypress"><![CDATA[
        var win = this.findbar._currentWindow ||
                  this.findbar.browser.contentWindow;

        var shouldHandle = !event.altKey && !event.ctrlKey &&
                           !event.metaKey && !event.shiftKey;

        switch (event.keyCode) {
          case KeyEvent.DOM_VK_RETURN:
            this._handleEnter(event);
            break;
          case KeyEvent.DOM_VK_TAB:
            this._handleTab(event);
            break;
          case KeyEvent.DOM_VK_PAGE_UP:
            if (shouldHandle) {
              win.scrollByPages(-1);
              event.preventDefault();
            }
            break;
          case KeyEvent.DOM_VK_PAGE_DOWN:
            if (shouldHandle) {
              win.scrollByPages(1);
              event.preventDefault();
            }
            break;
          case KeyEvent.DOM_VK_UP:
            win.scrollByLines(-1);
            event.preventDefault();
            break;
          case KeyEvent.DOM_VK_DOWN:
            win.scrollByLines(1);
            event.preventDefault();
            break;
        }
      ]]></handler>

      <handler event="blur"><![CDATA[
        var findbar = this.findbar;
        var fastFind = findbar.browser.fastFind;
        if (findbar._foundEditable)
          fastFind.collapseSelection();
        else {
          fastFind.setSelectionModeAndRepaint
            (findbar.nsISelectionController.SELECTION_ON);
        }
        findbar._setFoundLink(null);
        findbar._foundEditable = null;
        findbar._currentWindow = null;
      ]]></handler>

      <handler event="compositionstart"><![CDATA[
        // Don't close the find toolbar while IME is composing.
        var findbar = this.findbar;
        findbar._isIMEComposing = true;
        if (findbar._quickFindTimeout) {
          clearTimeout(findbar._quickFindTimeout);
          findbar._quickFindTimeout = null;
        }
      ]]></handler>

      <handler event="compositionend"><![CDATA[
        var findbar = this.findbar;
        findbar._isIMEComposing = false;
        if (findbar._findMode != findbar.FIND_NORMAL &&
            !findbar.hidden)
          findbar._setFindCloseTimeout();
      ]]></handler>

      <handler event="dragover"><![CDATA[
        if (event.dataTransfer.types.contains("text/plain"))
          event.preventDefault();
      ]]></handler>

      <handler event="drop"><![CDATA[
        var value = event.dataTransfer.getData("text/plain");
        this.value = value;
        this.findbar._find(value);
        event.stopPropagation();
        event.preventDefault();
      ]]></handler>
    </handlers>
  </binding>

  <binding id="findbar"
           extends="chrome://global/content/bindings/toolbar.xml#toolbar">
    <resources>
      <stylesheet src="chrome://global/skin/findBar.css"/>
    </resources>

    <content hidden="true">
    <xul:hbox anonid="findbar-container" class="findbar-container" flex="1" align="center">
      <xul:toolbarbutton anonid="find-closebutton"
                         class="findbar-closebutton"
                         tooltiptext="&findCloseButton.tooltip;"
                         oncommand="close();"/>
      <xul:label anonid="find-label" class="findbar-find-fast" control="findbar-textbox"/>
      <xul:textbox class="findbar-textbox findbar-find-fast" anonid="findbar-textbox"
                   xbl:inherits="flash"/>
#ifdef MOZ_WIDGET_GTK2
      <xul:toolbarbutton anonid="find-previous"
                         class="findbar-find-previous tabbable"
                         label="&previous.label;"
                         accesskey="&previous.accesskey;"
                         tooltiptext="&previous.tooltip;"
                         oncommand="onFindAgainCommand(true);"
                         disabled="true"
                         xbl:inherits="accesskey=findpreviousaccesskey"/>
#endif
      <xul:toolbarbutton anonid="find-next"
                         class="findbar-find-next tabbable"
                         label="&next.label;"
                         accesskey="&next.accesskey;"
                         tooltiptext="&next.tooltip;"
                         oncommand="onFindAgainCommand(false);"
                         disabled="true"
                         xbl:inherits="accesskey=findnextaccesskey"/>
#ifndef MOZ_WIDGET_GTK2
      <xul:toolbarbutton anonid="find-previous"
                         class="findbar-find-previous tabbable"
                         label="&previous.label;"
                         accesskey="&previous.accesskey;"
                         tooltiptext="&previous.tooltip;"
                         oncommand="onFindAgainCommand(true);"
                         disabled="true"
                         xbl:inherits="accesskey=findpreviousaccesskey"/>
#endif
      <xul:toolbarbutton anonid="highlight"
                         class="findbar-highlight tabbable"
                         label="&highlight.label;"
                         accesskey="&highlight.accesskey;"
                         tooltiptext="&highlight.tooltiptext;"
                         oncommand="toggleHighlight(this.checked);"
                         type="checkbox"
                         disabled="true"
                         xbl:inherits="accesskey=highlightaccesskey"/>
      <xul:checkbox anonid="find-case-sensitive"
                    oncommand="_setCaseSensitivity(this.checked);"
                    label="&caseSensitiveCheckbox.label;"
                    accesskey="&caseSensitiveCheckbox.accesskey;"
                    xbl:inherits="accesskey=matchcaseaccesskey"/>
      <xul:label anonid="match-case-status" class="findbar-find-fast"/>
      <xul:image anonid="find-status-icon" class="findbar-find-fast find-status-icon"/>
      <xul:description anonid="find-status" class="findbar-find-fast findbar-find-status"
                       control="findbar-textbox">
      <!-- Do not use value, first child is used because it provides a11y with text change events -->
      </xul:description>
    </xul:hbox>
    </content>

    <implementation implements="nsIDOMEventListener, nsIEditActionListener">
      <field name="FIND_NORMAL">0</field>
      <field name="FIND_TYPEAHEAD">1</field>
      <field name="FIND_LINKS">2</field>

      <field name="_findMode">0</field>
      <field name="_tmpOutline">null</field>
      <field name="_tmpOutlineOffset">"0"</field>
      <field name="_drawOutline">false</field>
      <field name="_foundLink">null</field>
      <field name="_editors">null</field>
      <field name="_stateListeners">null</field>

      <field name="_flashFindBar">0</field>
      <field name="_initialFlashFindBarCount">6</field>

      <property name="prefillWithSelection"
                onget="return this.getAttribute('prefillwithselection') != 'false'"
                onset="this.setAttribute('prefillwithselection', val); return val;"/>
      <field name="_selectionMaxLen">150</field>

      <method name="getElement">
        <parameter name="aAnonymousID"/>
        <body><![CDATA[
          return document.getAnonymousElementByAttribute(this,
                                                         "anonid",
                                                         aAnonymousID)
        ]]></body>
      </method>

      <property name="findMode"
                readonly="true"
                onget="return this._findMode;"/>

      <field name="_browser">null</field>
      <property name="browser">
        <getter><![CDATA[
          if (!this._browser) {
            this._browser =
              document.getElementById(this.getAttribute("browserid"));
          }
          return this._browser;
        ]]></getter>
        <setter><![CDATA[
          if (this._browser) {
            this._browser.removeEventListener("keypress", this, false);
            this._browser.removeEventListener("mouseup", this, false);
            this._foundLink = null;
            this._foundEditable = null;
            this._currentWindow = null;
          }

          this._browser = val;
          if (this._browser) {
            this._browser.addEventListener("keypress", this, false);
            this._browser.addEventListener("mouseup", this, false);
            this._findField.value = this._browser.fastFind.searchString;
          }
          return val;
        ]]></setter>
      </property>

      <field name="_observer"><![CDATA[({
        _self: this,

        QueryInterface: function(aIID) {
          if (aIID.equals(Components.interfaces.nsIObserver) ||
              aIID.equals(Components.interfaces.nsISupportsWeakReference) ||
              aIID.equals(Components.interfaces.nsISupports))
            return this;

          throw Components.results.NS_ERROR_NO_INTERFACE;
        },

        observe: function(aSubject, aTopic, aPrefName) {
          if (aTopic != "nsPref:changed")
            return;

          var prefsvc =
            aSubject.QueryInterface(Components.interfaces.nsIPrefBranch2);

          switch (aPrefName) {
            case "accessibility.typeaheadfind":
              this._self._useTypeAheadFind = prefsvc.getBoolPref(aPrefName);
              break;
            case "accessibility.typeaheadfind.linksonly":
              this._self._typeAheadLinksOnly = prefsvc.getBoolPref(aPrefName);
              break;
            case "accessibility.typeaheadfind.casesensitive":
              this._self._typeAheadCaseSensitive = prefsvc.getIntPref(aPrefName);
              this._self._updateCaseSensitivity();
              if (this._self.getElement("highlight").checked)
                this._self._setHighlightTimeout();
              break;
          }
        }
      })]]></field>

      <field name="_destroyed">false</field>

      <constructor><![CDATA[
        // These elements are accessed frequently and are therefore cached
        this._findField = this.getElement("findbar-textbox");
        this._findStatusIcon = this.getElement("find-status-icon");
        this._findStatusDesc = this.getElement("find-status");

        var prefsvc =
          Components.classes["@mozilla.org/preferences-service;1"]
                    .getService(Components.interfaces.nsIPrefBranch2);

        this._quickFindTimeoutLength =
          prefsvc.getIntPref("accessibility.typeaheadfind.timeout");
        this._flashFindBar =
          prefsvc.getIntPref("accessibility.typeaheadfind.flashBar");

        prefsvc.addObserver("accessibility.typeaheadfind",
                            this._observer, false);
        prefsvc.addObserver("accessibility.typeaheadfind.linksonly",
                            this._observer, false);
        prefsvc.addObserver("accessibility.typeaheadfind.casesensitive",
                            this._observer, false);

        this._useTypeAheadFind =
          prefsvc.getBoolPref("accessibility.typeaheadfind");
        this._typeAheadLinksOnly =
          prefsvc.getBoolPref("accessibility.typeaheadfind.linksonly");
        this._typeAheadCaseSensitive =
          prefsvc.getIntPref("accessibility.typeaheadfind.casesensitive");

        // Convenience
        this.nsITypeAheadFind = Components.interfaces.nsITypeAheadFind;
        this.nsISelectionController = Components.interfaces.nsISelectionController;
        this._findSelection = this.nsISelectionController.SELECTION_FIND;

        this._findResetTimeout = -1;

        // Make sure the FAYT keypress listener is attached by initializing the
        // browser property
        setTimeout(function(aSelf) { aSelf.browser = aSelf.browser; }, 0, this);
      ]]></constructor>

      <destructor><![CDATA[
        this.destroy();
      ]]></destructor>

      <!-- This is necessary because the destructor isn't called when
           we are removed from a document that is not destroyed. This
           needs to be explicitly called in this case -->
      <method name="destroy">
        <body><![CDATA[
          if (this._destroyed)
            return;
          this._destroyed = true;

          // It is possible that the findbar may be destroyed before any
          // documents it is listening to (see nsIEditActionListener code below).
          // Thus, to avoid leaking, if we are listening to any editors, unhook
          // ourselves now, and remove our cached copies
          if (this._editors) {
            for (var x = this._editors.length - 1; x >= 0; --x)
              this._unhookListenersAtIndex(x);
          }

          this.browser = null;

          var prefsvc =
            Components.classes["@mozilla.org/preferences-service;1"]
                      .getService(Components.interfaces.nsIPrefBranch2);
          prefsvc.removeObserver("accessibility.typeaheadfind",
                                 this._observer);
          prefsvc.removeObserver("accessibility.typeaheadfind.linksonly",
                                 this._observer);
          prefsvc.removeObserver("accessibility.typeaheadfind.casesensitive",
                                 this._observer);
        ]]></body>
      </method>

      <method name="_setFindCloseTimeout">
        <body><![CDATA[
          if (this._quickFindTimeout)
            clearTimeout(this._quickFindTimeout);

          // Don't close the find toolbar while IME is composing.
          if (this._isIMEComposing) {
            this._quickFindTimeout = null;
            return;
          }

          this._quickFindTimeout =
            setTimeout(function(aSelf) {
                         if (aSelf._findMode != aSelf.FIND_NORMAL)
                           aSelf.close();
                       }, this._quickFindTimeoutLength, this);
        ]]></body>
      </method>

      <!--
        - Gets the selection controller for the current browser
        -->
      <method name="_getSelectionController">
        <parameter name="aWindow"/>
        <body><![CDATA[
          // display: none iframes don't have a selection controller, see bug 493658
          if (!aWindow.innerWidth || !aWindow.innerHeight)
            return null;

          // Yuck. See bug 138068.
          var Ci = Components.interfaces;
          var docShell = aWindow.QueryInterface(Ci.nsIInterfaceRequestor)
                                .getInterface(Ci.nsIWebNavigation)
                                .QueryInterface(Ci.nsIDocShell);

          var controller = docShell.QueryInterface(Ci.nsIInterfaceRequestor)
                                   .getInterface(Ci.nsISelectionDisplay)
                                   .QueryInterface(Ci.nsISelectionController);
          return controller;
        ]]></body>
      </method>

      <!--
        - For a given node, walk up it's parent chain, to try and find an
        - editable node.
        -
        - @param aNode the node we want to check
        - @returns the first node in the parent chain that is editable,
        -          null if there is no such node
        -->
      <method name="_getEditableNode">
        <parameter name="aNode"/>
        <body><![CDATA[
          while (aNode) {
            if (aNode instanceof Components.interfaces.nsIDOMNSEditableElement) {
              return aNode.editor ? aNode : null;
            }
            aNode = aNode.parentNode;
          }
          return null;
        ]]></body>
      </method>

      <!--
        - Helper method to unhook listeners, remove cached editors
        - and keep the relevant arrays in sync
        -
        - @param aIndex the index into the array of editors/state listeners
        -        we wish to remove
        -->
      <method name="_unhookListenersAtIndex">
        <parameter name="aIndex"/>
        <body><![CDATA[
          this._editors[aIndex].removeEditActionListener(this);
          this._editors[aIndex]
              .removeDocumentStateListener(this._stateListeners[aIndex]);
          this._editors.splice(aIndex, 1);
          this._stateListeners.splice(aIndex, 1);
          if (this._editors.length == 0) {
            delete this._editors;
            delete this._stateListeners;
          }
        ]]></body>
      </method>

      <!--
        - Remove ourselves as an nsIEditActionListener and
        - nsIDocumentStateListener from a given cached editor
        -
        - @param aEditor the editor we no longer wish to listen to
        -->
      <method name="_removeEditorListeners">
        <parameter name="aEditor"/>
        <body><![CDATA[
          // aEditor is an editor that we listen to, so therefore must be
          // cached. Find the index of this editor
          var idx = 0;
          while (this._editors[idx] != aEditor)
            idx++;

          // Now unhook ourselves, and remove our cached copy
          this._unhookListenersAtIndex(idx);
        ]]></body>
      </method>

      <!--
        - nsIEditActionListener logic follows
        -
        - We implement this interface to allow us to catch the case where
        - the findbar found a match in a HTML <input> or <textarea>. If the
        - user adjusts the text in some way, it will no longer match, so we
        - want to remove the highlight, rather than have it expand/contract
        - when letters are added or removed.
        -->

      <!--
        - Helper method used to check whether a selection intersects with
        - some highlighting
        -
        - @param aSelectionRange the range from the selection to check
        - @param aFindRange the highlighted range to check against
        - @returns true if they intersect, false otherwise
        -->
      <method name="_checkOverlap">
        <parameter name="aSelectionRange"/>
        <parameter name="aFindRange"/>
        <body><![CDATA[
          // The ranges overlap if one of the following is true:
          // 1) At least one of the endpoints of the deleted selection
          //    is in the find selection
          // 2) At least one of the endpoints of the find selection
          //    is in the deleted selection
          if (aFindRange.isPointInRange(aSelectionRange.startContainer,
                                        aSelectionRange.startOffset))
            return true;
          if (aFindRange.isPointInRange(aSelectionRange.endContainer,
                                        aSelectionRange.endOffset))
            return true;
          if (aSelectionRange.isPointInRange(aFindRange.startContainer,
                                             aFindRange.startOffset))
            return true;
          if (aSelectionRange.isPointInRange(aFindRange.endContainer,
                                             aFindRange.endOffset))
            return true;

          return false;
        ]]></body>
      </method>

      <!--
        - Helper method to determine if an edit occurred within a highlight
        -
        - @param aSelection the selection we wish to check
        - @param aNode the node we want to check is contained in aSelection
        - @param aOffset the offset into aNode that we want to check
        - @returns the range containing (aNode, aOffset) or null if no ranges
        -          in the selection contain it
        -->
      <method name="_findRange">
        <parameter name="aSelection"/>
        <parameter name="aNode"/>
        <parameter name="aOffset"/>
        <body><![CDATA[
          var rangeCount = aSelection.rangeCount;
          var rangeidx = 0;
          var foundContainingRange = false;
          var range = null;

          // Check to see if this node is inside one of the selection's ranges
          while (!foundContainingRange && rangeidx < rangeCount) {
            range = aSelection.getRangeAt(rangeidx);
            if (range.isPointInRange(aNode, aOffset)) {
              foundContainingRange = true;
              break;
            }
            rangeidx++;
          }

          if (foundContainingRange)
            return range;

          return null;
        ]]></body>
      </method>

      <!-- Start of nsIEditActionListener implementations -->

      <method name="WillDeleteText">
        <parameter name="aTextNode"/>
        <parameter name="aOffset"/>
        <parameter name="aLength"/>
        <body><![CDATA[
          var editor = this._getEditableNode(aTextNode).editor;
          var controller = editor.selectionController;
          var fSelection = controller.getSelection(this._findSelection);
          var range = this._findRange(fSelection, aTextNode, aOffset);

          if (range) {
            // Don't remove the highlighting if the deleted text is at the
            // end of the range
            if (aTextNode != range.endContainer ||
                aOffset != range.endOffset) {
              // Text within the highlight is being removed - the text can
              // no longer be a match, so remove the highlighting
              fSelection.removeRange(range);
              if (fSelection.rangeCount == 0)
                this._removeEditorListeners(editor);
            }
          }
        ]]></body>
      </method>

      <method name="DidInsertText">
        <parameter name="aTextNode"/>
        <parameter name="aOffset"/>
        <parameter name="aString"/>
        <body><![CDATA[
          var editor = this._getEditableNode(aTextNode).editor;
          var controller = editor.selectionController;
          var fSelection = controller.getSelection(this._findSelection);
          var range = this._findRange(fSelection, aTextNode, aOffset);

          if (range) {
            // If the text was inserted before the highlight
            // adjust the highlight's bounds accordingly
            if (aTextNode == range.startContainer &&
                       aOffset == range.startOffset)
              range.setStart(range.startContainer,
                             range.startOffset+aString.length);
            else if (aTextNode != range.endContainer ||
                     aOffset != range.endOffset) {
              // The edit occurred within the highlight - any addition of text
              // will result in the text no longer being a match,
              // so remove the highlighting
              fSelection.removeRange(range);
              if (fSelection.rangeCount == 0)
                this._removeEditorListeners(editor);
            }
          }
        ]]></body>
      </method>

      <method name="WillDeleteSelection">
        <parameter name="aSelection"/>
        <body><![CDATA[
          var editor = this._getEditableNode(aSelection.getRangeAt(0)
                                                       .startContainer).editor;
          var controller = editor.selectionController;
          var fSelection = controller.getSelection(this._findSelection);

          var selectionIndex = 0;
          var findSelectionIndex = 0;
          var shouldDelete = {};
          var numberOfDeletedSelections = 0;
          var numberOfMatches = fSelection.rangeCount;

          // We need to test if any ranges in the deleted selection (aSelection)
          // are in any of the ranges of the find selection
          // Usually both selections will only contain one range, however
          // either may contain more than one.

          for (var fIndex = 0; fIndex < numberOfMatches; fIndex++) {
            shouldDelete[fIndex] = false;
            var fRange = fSelection.getRangeAt(fIndex);

            for (var index = 0; index < aSelection.rangeCount; index++) {
              if (!shouldDelete[fIndex]) {
                var selRange = aSelection.getRangeAt(index);
                var doesOverlap = this._checkOverlap(selRange, fRange);
                if (doesOverlap) {
                  shouldDelete[fIndex] = true;
                  numberOfDeletedSelections++;
                }
              }
            }
          }

          // OK, so now we know what matches (if any) are in the selection
          // that is being deleted. Time to remove them.
          if (numberOfDeletedSelections == 0)
            return;

          for (var i = numberOfMatches - 1; i >= 0; i--) {
            if (shouldDelete[i]) {
              var r = fSelection.getRangeAt(i);
              fSelection.removeRange(r);
            }
          }

          // Remove listeners if no more highlights left
          if (fSelection.rangeCount == 0)
            this._removeEditorListeners(editor);
        ]]></body>
      </method>

      <method name="WillInsertText">
        <body><![CDATA[
          // Unimplemented
        ]]></body>
      </method>

      <method name="DidCreateNode">
        <body><![CDATA[
          // Unimplemented
        ]]></body>
      </method>

      <method name="DidDeleteNode">
        <body><![CDATA[
          // Unimplemented
        ]]></body>
      </method>

      <method name="DidDeleteSelection">
        <body><![CDATA[
          // Unimplemented
        ]]></body>
      </method>

      <method name="DidDeleteText">
        <body><![CDATA[
          // Unimplemented
        ]]></body>
      </method>

      <method name="DidInsertNode">
        <body><![CDATA[
          // Unimplemented
        ]]></body>
      </method>

      <method name="DidJoinNodes">
        <body><![CDATA[
          // Unimplemented
        ]]></body>
      </method>

      <method name="DidSplitNode">
        <body><![CDATA[
          // Unimplemented
        ]]></body>
      </method>

      <method name="WillCreateNode">
        <body><![CDATA[
          // Unimplemented
        ]]></body>
      </method>

      <method name="WillDeleteNode">
        <body><![CDATA[
          // Unimplemented
        ]]></body>
      </method>

      <method name="WillInsertNode">
        <body><![CDATA[
          // Unimplemented
        ]]></body>
      </method>

      <method name="WillJoinNodes">
        <body><![CDATA[
          // Unimplemented
        ]]></body>
      </method>

      <method name="WillSplitNode">
        <body><![CDATA[
          // Unimplemented
        ]]></body>
      </method>

      <!-- End of nsIEditActionListener implementations -->

      <!--
        - nsIDocumentStateListener logic follows
        -
        - When attaching nsIEditActionListeners, there are no guarantees
        - as to whether the findbar or the documents in the browser will get
        - destructed first. This leads to the potential to either leak, or to
        - hold on to a reference an editable element's editor for too long,
        - preventing it from being destructed.
        -
        - However, when an editor's owning node is being destroyed, the editor
        - sends out a DocumentWillBeDestroyed notification. We can use this to
        - clean up our references to the object, to allow it to be destroyed in a
        - timely fashion.
        -->

      <!--
        - Unhook ourselves when one of our state listeners has been called.
        - This can happen in 4 cases:
        -  1) The document the editor belongs to is navigated away from, and
        -     the document is not being cached
        -
        -  2) The document the editor belongs to is expired from the cache
        -
        -  3) The tab containing the owning document is closed
        -
        -  4) The <input> or <textarea> that owns the editor is explicitly
        -     removed from the DOM
        -
        - @param the listener that was invoked
        -->
      <method name="_onEditorDestruction">
        <parameter name="aListener"/>
        <body><![CDATA[
          // First find the index of the editor the given listener listens to.
          // The listeners and editors arrays must always be in sync.
          // The listener will be in our array of cached listeners, as this
          // method could not have been called otherwise.
          var idx = 0;
          while (this._stateListeners[idx] != aListener)
            idx++;

          // Unhook both listeners
          this._unhookListenersAtIndex(idx);
        ]]></body>
      </method>

      <!--
        - Creates a unique document state listener for an editor.
        -
        - It is not possible to simply have the findbar implement the
        - listener interface itself, as it wouldn't have sufficient information
        - to work out which editor was being destroyed. Therefore, we create new
        - listeners on the fly, and cache them in sync with the editors they
        - listen to.
        -->
      <method name="_createStateListener">
        <body><![CDATA[
          return ({
            findbar: this,

            QueryInterface: function(aIID) {
              if (aIID.equals(Components.interfaces.nsIDocumentStateListener) ||
                  aIID.equals(Components.interfaces.nsISupports))
                return this;

              throw Components.results.NS_ERROR_NO_INTERFACE;
            },

            NotifyDocumentWillBeDestroyed: function() {
              this.findbar._onEditorDestruction(this);
            },

            // Unimplemented
            notifyDocumentCreated: function() {},
            notifyDocumentStateChanged: function(aDirty) {}
          });
        ]]></body>
      </method>

      <!--
        - Turns highlight on or off.
        - @param aHighlight (boolean)
        -        Whether to turn the highlight on or off
        -->
      <method name="toggleHighlight">
        <parameter name="aHighlight"/>
        <body><![CDATA[
          var word = this._findField.value;

          // Bug 429723. Don't attempt to highlight ""
          if (aHighlight && !word)
            return;

          // We have to update the status because we might still have the status
          // of another tab
          if (this._highlightDoc(aHighlight, word))
            this._updateStatusUI(this.nsITypeAheadFind.FIND_FOUND);
          else
            this._updateStatusUI(this.nsITypeAheadFind.FIND_NOTFOUND);
        ]]></body>
      </method>

      <!--
        - (Un)highlights each instance of the searched word in the passed
        - window's content.
        - @param aHighlight (boolean)
        -        Whether to turn on highlight
        - @param aWord
        -        the word to search for
        - @param aWindow
        -        the window to search in. Passing undefined will search the
        -        current content window.
        - @returns true if aWord was found
        -->
      <method name="_highlightDoc">
        <parameter name="aHighlight"/>
        <parameter name="aWord"/>
        <parameter name="aWindow"/>
        <body><![CDATA[
          var win = aWindow || this.browser.contentWindow;

          var textFound = false;

          for (var i = 0; win.frames && i < win.frames.length; i++) {
            if (this._highlightDoc(aHighlight, aWord, win.frames[i]))
              textFound = true;
          }

          var controller = this._getSelectionController(win);
          if (!controller) {
            // Without the selection controller,
            // we are unable to (un)highlight any matches
            return textFound;
          }

          var doc = win.document;
          if (!doc || !(doc instanceof HTMLDocument))
            return textFound;

          if (aHighlight) {
            this._searchRange = doc.createRange();
            this._searchRange.selectNodeContents(doc.body);

            this._startPt = this._searchRange.cloneRange();
            this._startPt.collapse(true);

            this._endPt = this._searchRange.cloneRange();
            this._endPt.collapse(false);

            var retRange = null;
            var finder = Components.classes["@mozilla.org/embedcomp/rangefind;1"]
                                   .createInstance()
                                   .QueryInterface(Components.interfaces.nsIFind);

            finder.caseSensitive = this._shouldBeCaseSensitive(aWord);

            while ((retRange = finder.Find(aWord, this._searchRange,
                                          this._startPt, this._endPt))) {
              this._highlight(retRange, controller);
              this._startPt = retRange.cloneRange();
              this._startPt.collapse(false);

              textFound = true;
            }
          } else {
            // First, attempt to remove highlighting from main document
            var sel = controller.getSelection(this._findSelection);
            sel.removeAllRanges();

            // Next, check our editor cache, for editors belonging to this
            // document
            if (this._editors) {
              for (var x = this._editors.length - 1; x >= 0; --x) {
                if (this._editors[x].document == doc) {
                  sel = this._editors[x].selectionController
                                        .getSelection(this._findSelection);
                  sel.removeAllRanges();
                  // We don't need to listen to this editor any more
                  this._unhookListenersAtIndex(x);
                }
              }
            }
            return true;
          }

          return textFound;
        ]]></body>
      </method>

     <!--
       - Highlights the word in the passed range.
       -
       - @param aRange
       -        the range that contains the word to highlight
       - @param aController
       -        the current document's selection controller
       -->
      <method name="_highlight">
        <parameter name="aRange"/>
        <parameter name="aController"/>
        <body><![CDATA[
          var node = aRange.startContainer;
          var controller = aController;
          var editableNode = this._getEditableNode(node);
          if (editableNode)
            controller = editableNode.editor.selectionController;

          var findSelection = controller.getSelection(this._findSelection);
          findSelection.addRange(aRange);

          if (editableNode) {
            // Highlighting added, so cache this editor, and hook up listeners
            // to ensure we deal properly with edits within the highlighting
            if (!this._editors) {
              this._editors = [];
              this._stateListeners = [];
            }

            var existingIndex = this._editors.indexOf(editableNode.editor);
            if (existingIndex == -1) {
              var x = this._editors.length;
              this._editors[x] = editableNode.editor;
              this._stateListeners[x] = this._createStateListener();
              this._editors[x].addEditActionListener(this);
              this._editors[x].addDocumentStateListener(this._stateListeners[x]);
            }
          }
        ]]></body>
      </method>

      <!--
        - Updates the case-sensitivity mode of the findbar and its UI.
        - @param [optional] aString
        -        The string for which case sensitivity might be turned on.
        -        This only used when case-sensitivity is in auto mode,
        -        @see _shouldBeCaseSensitive. The default value for this
        -        parameter is the find-field value.
        -->
      <method name="_updateCaseSensitivity">
        <parameter name="aString"/>
        <body><![CDATA[
          var val = aString || this._findField.value;

          var caseSensitive = this._shouldBeCaseSensitive(val);
          var checkbox = this.getElement("find-case-sensitive");
          var statusLabel = this.getElement("match-case-status");
          checkbox.checked = caseSensitive;

          statusLabel.value = caseSensitive ? this._caseSensitiveStr : "";

          // Show the checkbox on the full Find bar in non-auto mode.
          // Show the label in all other cases.
          var hideCheckbox = this._findMode != this.FIND_NORMAL ||
            (this._typeAheadCaseSensitive != 0 &&
             this._typeAheadCaseSensitive != 1);
          checkbox.hidden = hideCheckbox;
          statusLabel.hidden = !hideCheckbox;

          var fastFind = this.browser.fastFind;
          fastFind.caseSensitive = caseSensitive;
        ]]></body>
      </method>

      <!--
        - Sets the findbar case-sensitivity mode
        - @param aCaseSensitive (boolean)
        -        Whether or not case-sensitivity should be turned on.
        -->
      <method name="_setCaseSensitivity">
        <parameter name="aCaseSensitive"/>
        <body><![CDATA[
          var prefsvc =
            Components.classes["@mozilla.org/preferences-service;1"]
                      .getService(Components.interfaces.nsIPrefBranch2);

          // Just set the pref; our observer will change the find bar behavior
          prefsvc.setIntPref("accessibility.typeaheadfind.casesensitive",
                             aCaseSensitive ? 1 : 0);
        ]]></body>
      </method>

      <!--
        - Opens and displays the find bar.
        -
        - @param aMode
        -        the find mode to be used, which is either FIND_NORMAL,
        -        FIND_TYPEAHEAD or FIND_LINKS. If not passed, the last
        -        find mode if any or FIND_NORMAL.
        - @returns true if the find bar wasn't previously open, false otherwise.
        -->
      <method name="open">
        <parameter name="aMode"/>
        <body><![CDATA[
          if (aMode != undefined)
            this._findMode = aMode;

          if (!this._notFoundStr) {
            var stringsBundle =
              Components.classes["@mozilla.org/intl/stringbundle;1"]
                        .getService(Components.interfaces.nsIStringBundleService)
                        .createBundle("chrome://global/locale/findbar.properties");
            this._notFoundStr = stringsBundle.GetStringFromName("NotFound");
            this._wrappedToTopStr =
              stringsBundle.GetStringFromName("WrappedToTop");
            this._wrappedToBottomStr =
              stringsBundle.GetStringFromName("WrappedToBottom");
            this._normalFindStr =
              stringsBundle.GetStringFromName("NormalFindLabel");
            this._fastFindStr =
              stringsBundle.GetStringFromName("FastFindLabel");
            this._fastFindLinksStr =
              stringsBundle.GetStringFromName("FastFindLinksLabel");
            this._caseSensitiveStr =
              stringsBundle.GetStringFromName("CaseSensitive");
          }

          this._findFailedString = null;

          this._updateFindUI();
          if (this.hidden) {
            this.hidden = false;

            this._updateStatusUI(this.nsITypeAheadFind.FIND_FOUND);
            return true;
          }
          return false;
        ]]></body>
      </method>

      <!--
        - Closes the findbar.
        -->
      <method name="close">
        <body><![CDATA[
          var fm =
            Components.classes["@mozilla.org/focus-manager;1"]
                      .getService(Components.interfaces.nsIFocusManager);
          if (window == fm.focusedWindow) {
            var focusedElement = fm.focusedElement;
            if (focusedElement) {
              var bindingParent = document.getBindingParent(focusedElement);
              if (bindingParent == this || bindingParent == this._findField) {
                // block scrolling on focus since find already scrolls, further
                // scrolling is due to user action, so don't override this
                var element = this._foundLink || this._foundEditable;
                if (element)
                  fm.setFocus(element, fm.FLAG_NOSCROLL);
                else if (this._currentWindow)
                    this._currentWindow.focus();
                else
                  this.browser.contentWindow.focus();
              }
            }
          }

          this.hidden = true;
          var fastFind = this.browser.fastFind;
          fastFind.setSelectionModeAndRepaint
            (this.nsISelectionController.SELECTION_ON);
          this._setFoundLink(null);
          this._foundEditable = null;
          this._currentWindow = null;
          if (this._quickFindTimeout) {
            clearTimeout(this._quickFindTimeout);
            this._quickFindTimeout = null;
          }

          this._findFailedString = null;
        ]]></body>
      </method>

      <method name="_dispatchKeypressEvent">
        <parameter name="aTarget"/>
        <parameter name="aEvent"/>
        <body><![CDATA[
          if (!aTarget)
            return;

          var event = document.createEvent("KeyEvents");
          event.initKeyEvent(aEvent.type, aEvent.bubbles, aEvent.cancelable,
                             aEvent.view, aEvent.ctrlKey, aEvent.altKey,
                             aEvent.shiftKey, aEvent.metaKey, aEvent.keyCode,
                             aEvent.charCode);
          aTarget.dispatchEvent(event);
        ]]></body>
      </method>

      <field name="_xulBrowserWindow">null</field>
      <method name="_updateStatusUIBar">
        <body><![CDATA[
          if (!this._xulBrowserWindow) {
            try {
              this._xulBrowserWindow =
                window.QueryInterface(Components.interfaces.nsIInterfaceRequestor)
                      .getInterface(Components.interfaces.nsIWebNavigation)
                      .QueryInterface(Components.interfaces.nsIDocShellTreeItem)
                      .treeOwner
                      .QueryInterface(Components.interfaces.nsIInterfaceRequestor)
                      .getInterface(Components.interfaces.nsIXULWindow)
                      .XULBrowserWindow;
            }
            catch(ex) { }
            if (!this._xulBrowserWindow)
              return false;
          }

          if (!this._foundLink || !this._foundLink.href ||
              this._foundLink.href == "") {
            this._xulBrowserWindow.setOverLink("", null);
            return true;
          }

          var docCharset = "";
          var ownerDoc = this._foundLink.ownerDocument;
          if (ownerDoc)
            docCharset = ownerDoc.characterSet;

          if (!this._textToSubURIService) {
            this._textToSubURIService =
              Components.classes["@mozilla.org/intl/texttosuburi;1"]
                        .getService(Components.interfaces.nsITextToSubURI);
          }
          var url =
            this._textToSubURIService.unEscapeURIForUI(docCharset,
                                                       this._foundLink.href);
          this._xulBrowserWindow.setOverLink(url, null);

          return true;
        ]]></body>
      </method>

      <method name="_setFoundLink">
        <parameter name="aFoundLink"/>
        <body><![CDATA[
          if (this._foundLink == aFoundLink)
            return;

          if (this._foundLink && this._drawOutline) {
            // restore original outline
            this._foundLink.style.outline = this._tmpOutline;
            this._foundLink.style.outlineOffset = this._tmpOutlineOffset;
          }
          this._drawOutline = (aFoundLink && this._findMode != this.FIND_NORMAL);
          if (this._drawOutline) {
            // backup original outline
            this._tmpOutline = aFoundLink.style.outline;
            this._tmpOutlineOffset = aFoundLink.style.outlineOffset;

            // draw pseudo focus rect
            // XXX Should we change the following style for FAYT pseudo focus?
            // XXX Shouldn't we change default design if outline is visible
            //     already?
            // Don't set the outline-color, we should always use initial value.
            aFoundLink.style.outline = "1px dotted";
            aFoundLink.style.outlineOffset = "0";
          }

          this._foundLink = aFoundLink;

          // If the mouse cursor is on the document, the status bar text is
          // changed by a mouse event which is dispatched by a scroll event.
          // Thus we should change it only after the mouse event is dispatched.
          if (this._findMode != this.FIND_NORMAL)
            setTimeout(function(aSelf) { aSelf._updateStatusUIBar(); }, 0, this);
        ]]></body>
      </method>

      <method name="_finishFAYT">
        <parameter name="aKeypressEvent"/>
        <body><![CDATA[
          try {
            if (this._foundLink)
              this._foundLink.focus();
            else if (this._foundEditable) {
              this._foundEditable.focus();
              var fastFind = this.browser.fastFind;
              fastFind.collapseSelection();
            }
            else if (this._currentWindow)
              this._currentWindow.focus();
            else
              return false;
          }
          catch(e) {
            return false;
          }

          if (aKeypressEvent)
            aKeypressEvent.preventDefault();

          this.close();
          return true;
        ]]></body>
      </method>

      <!--
        - Returns true if |aMimeType| is text-based, or false otherwise.
        -
        - @param aMimeType
        -        The MIME type to check.
        -
        - if adding types to this function, please see the similar function
        - in browser/base/content/browser.js
        -->
      <method name="_mimeTypeIsTextBased">
        <parameter name="aMimeType"/>
        <body><![CDATA[
          return /^text\/|\+xml$/.test(aMimeType) ||
                 aMimeType == "application/x-javascript" ||
                 aMimeType == "application/javascript" ||
                 aMimeType == "application/xml";
        ]]></body>
      </method>

      <!--
        - Returns whether FAYT can be used for the given event in
        - the current content state.
        -->
      <method name="_shouldFastFind">
        <parameter name="aEvent"/>
        <body><![CDATA[
          if (aEvent.ctrlKey || aEvent.altKey || aEvent.metaKey ||
              aEvent.getPreventDefault())
            return false;

          var win = document.commandDispatcher.focusedWindow;
          if (win)
            if (!this._mimeTypeIsTextBased(win.document.contentType))
              return false;

          var elt = document.commandDispatcher.focusedElement;
          if (elt) {
            if (elt instanceof HTMLInputElement) {
              // block FAYT when an <input> textfield element is focused
              var inputType = elt.type;
              switch (inputType) {
                case "text":
                case "password":
                case "file":
                  return false;
              }
            }
            else if (elt instanceof HTMLTextAreaElement ||
                     elt instanceof HTMLSelectElement ||
                     elt instanceof HTMLIsIndexElement ||
                     elt instanceof HTMLObjectElement ||
                     elt instanceof HTMLEmbedElement)
              return false;
          }

          // disable FAYT in about:config and about:blank to prevent FAYT
          // opening unexpectedly - to fix bugs 264562, 267150, 269712
          var url = this.browser.currentURI.spec;
          if (url == "about:blank" || url == "about:config")
            return false;

          if (win) {
            try {
              var editingSession = win.QueryInterface(Components.interfaces.nsIInterfaceRequestor)
                                   .getInterface(Components.interfaces.nsIWebNavigation)
                                   .QueryInterface(Components.interfaces.nsIInterfaceRequestor)
                                   .getInterface(Components.interfaces.nsIEditingSession);
              if (editingSession.windowIsEditable(win))
                return false;
            }
            catch (e) {
              // If someone built with composer disabled, we can't get an editing session.
            }
         }

          return true;
        ]]></body>
      </method>

      <method name="_shouldBeCaseSensitive">
        <parameter name="aString"/>
        <body><![CDATA[
          if (this._typeAheadCaseSensitive == 0)
            return false;
          if (this._typeAheadCaseSensitive == 1)
            return true;

          return aString != aString.toLowerCase();
        ]]></body>
      </method>

      <method name="_onBrowserKeypress">
        <parameter name="aEvent"/>
        <body><![CDATA[
          const TAF_LINKS_KEY = "'";
          const TAF_TEXT_KEY = "/";

          if (!this._shouldFastFind(aEvent))
            return;

          if (this._findMode != this.FIND_NORMAL && this._quickFindTimeout) {
            if (!aEvent.charCode)
              return;

            this._findField.select();
            this._findField.focus();
            this._dispatchKeypressEvent(this._findField.inputField, aEvent);
            aEvent.preventDefault();
            return;
          }

          var key = aEvent.charCode ? String.fromCharCode(aEvent.charCode) : null;
          var manualstartFAYT = (key == TAF_LINKS_KEY || key == TAF_TEXT_KEY);
          var autostartFAYT = !manualstartFAYT && this._useTypeAheadFind &&
                              key && key != " ";
          if (manualstartFAYT || autostartFAYT) {
            var mode = (key == TAF_LINKS_KEY ||
                        (autostartFAYT && this._typeAheadLinksOnly)) ?
              this.FIND_LINKS : this.FIND_TYPEAHEAD;

            // Clear bar first, so that when openFindBar() calls setCaseSensitivity()
            // it doesn't get confused by a lingering value
            this._findField.value = "";

            this.open(mode);
            this._setFindCloseTimeout();
            this._findField.select();
            this._findField.focus();

            if (autostartFAYT)
              this._dispatchKeypressEvent(this._findField.inputField, aEvent);
            else
              this._updateStatusUI(this.nsITypeAheadFind.FIND_FOUND);

            aEvent.preventDefault();
          }
        ]]></body>
      </method>

      <!-- See nsIDOMEventListener -->
      <method name="handleEvent">
        <parameter name="aEvent"/>
        <body><![CDATA[
          switch (aEvent.type) {
            case "mouseup":
              if (!this.hidden && this._findMode != this.FIND_NORMAL)
                this.close();

              break;
            case "keypress":
              this._onBrowserKeypress(aEvent);
              break;
          }
        ]]></body>
      </method>

      <method name="_enableFindButtons">
        <parameter name="aEnable"/>
        <body><![CDATA[
          this.getElement("find-next").disabled =
            this.getElement("find-previous").disabled =
            this.getElement("highlight").disabled = !aEnable;
        ]]></body>
      </method>

      <!--
        - Determines whether minimalist or general-purpose search UI is to be
        - displayed when the find bar is activated.
        -->
      <method name="_updateFindUI">
        <body><![CDATA[
          var showMinimalUI = this._findMode != this.FIND_NORMAL;

          var nodes = this.getElement("findbar-container").childNodes;
          for (var i = 0; i < nodes.length; i++) {
            if (nodes[i].className.indexOf("findbar-find-fast") != -1)
               continue;

            nodes[i].hidden = showMinimalUI;
          }
          this._updateCaseSensitivity();

          if (this._findMode == this.FIND_TYPEAHEAD)
            this.getElement("find-label").value = this._fastFindStr;
          else if (this._findMode == this.FIND_LINKS)
            this.getElement("find-label").value = this._fastFindLinksStr;
          else
            this.getElement("find-label").value = this._normalFindStr;
        ]]></body>
      </method>

      <method name="_updateFoundLink">
        <parameter name="res"/>
        <body><![CDATA[
          var val = this._findField.value;
          if (res == this.nsITypeAheadFind.FIND_NOTFOUND || !val) {
            this._setFoundLink(null);
            this._foundEditable = null;
            this._currentWindow = null;
          }
          else {
            this._setFoundLink(this.browser.fastFind.foundLink);
            this._foundEditable = this.browser.fastFind.foundEditable;
            this._currentWindow = this.browser.fastFind.currentWindow;
          }
        ]]></body>
      </method>

      <method name="_find">
        <parameter name="aValue"/>
        <body><![CDATA[
          var val = aValue || this._findField.value;
          var res = this.nsITypeAheadFind.FIND_NOTFOUND;

          // Only search on input if we don't have a last-failed string,
          // or if the current search string doesn't start with it.
          if (this._findFailedString == null ||
              val.indexOf(this._findFailedString) != 0)
          {
            this._enableFindButtons(val);
            if (this.getElement("highlight").checked)
              this._setHighlightTimeout();

            this._updateCaseSensitivity(val);

            var fastFind = this.browser.fastFind;
            res = fastFind.find(val, this._findMode == this.FIND_LINKS);

            this._updateFoundLink(res);
            this._updateStatusUI(res, false);

            if (res == this.nsITypeAheadFind.FIND_NOTFOUND)
              this._findFailedString = val;
            else
              this._findFailedString = null;
          }

          if (this._findMode != this.FIND_NORMAL)
            this._setFindCloseTimeout();

          if (this._findResetTimeout != -1)
            clearTimeout(this._findResetTimeout);

          // allow a search to happen on input again after a second has
          // expired since the previous input, to allow for dynamic
          // content and/or page loading
          this._findResetTimeout = setTimeout(function(self) {
						  self._findFailedString = null;
						  self._findResetTimeout = -1; },
					      1000, this);

          return res;
        ]]></body>
      </method>

      <method name="_flash">
        <body><![CDATA[
          if (this._flashFindBarCount === undefined)
            this._flashFindBarCount = this._initialFlashFindBarCount;

          if (this._flashFindBarCount-- == 0) {
            clearInterval(this._flashFindBarTimeout);
            this.removeAttribute("flash");
            this._flashFindBarCount = 6;
            return;
          }

          this.setAttribute("flash",
                            (this._flashFindBarCount % 2 == 0) ?
                            "false" : "true");
        ]]></body>
      </method>

      <method name="_setHighlightTimeout">
        <body><![CDATA[
          if (this._highlightTimeout)
            clearTimeout(this._highlightTimeout);
          this._highlightTimeout =
            setTimeout(function(aSelf) {
                         aSelf.toggleHighlight(false);
                         aSelf.toggleHighlight(true);
                       }, 500, this);
        ]]></body>
      </method>

      <method name="_findAgain">
        <parameter name="aFindPrevious"/>
        <body><![CDATA[
          var fastFind = this.browser.fastFind;
          var res = fastFind.findAgain(aFindPrevious,
                                       this._findMode == this.FIND_LINKS);
          this._updateFoundLink(res);
          this._updateStatusUI(res, aFindPrevious);

          if (this._findMode != this.FIND_NORMAL && !this.hidden)
            this._setFindCloseTimeout();

          return res;
        ]]></body>
      </method>

      <method name="_updateStatusUI">
        <parameter name="res"/>
        <parameter name="aFindPrevious"/>
        <body><![CDATA[
          switch (res) {
            case this.nsITypeAheadFind.FIND_WRAPPED:
              this._findStatusIcon.setAttribute("status", "wrapped");
              this._findStatusDesc.textContent =
                aFindPrevious ? this._wrappedToBottomStr : this._wrappedToTopStr;
              this._findField.removeAttribute("status");
              break;
            case this.nsITypeAheadFind.FIND_NOTFOUND:
              this._findStatusIcon.setAttribute("status", "notfound");
              this._findStatusDesc.textContent = this._notFoundStr;
              this._findField.setAttribute("status", "notfound");
              break;
            case this.nsITypeAheadFind.FIND_FOUND:
            default:
              this._findStatusIcon.removeAttribute("status");
              this._findStatusDesc.textContent = "";
              this._findField.removeAttribute("status");
              break;
          }
        ]]></body>
      </method>

      <method name="_getInitialSelection">
        <body><![CDATA[
          var focusedElement = document.commandDispatcher.focusedElement;
          var selText;

          if (focusedElement instanceof Components.interfaces.nsIDOMNSEditableElement &&
              focusedElement.editor &&
              focusedElement.ownerDocument.defaultView.top == this._browser.contentWindow)
          {
            // The user may have a selection in an input or textarea
            selText = focusedElement.editor.selectionController
              .getSelection(Components.interfaces.nsISelectionController.SELECTION_NORMAL)
              .toString();
          }
          else {
            // Look for any selected text on the actual page
            var focusedWindow = document.commandDispatcher.focusedWindow;
            if (focusedWindow.top == this._browser.contentWindow)
              selText = focusedWindow.getSelection().toString();
          }

          if (!selText)
            return "";

          // Process our text to get rid of unwanted characters
          if (selText.length > this._selectionMaxLen) {
            var pattern = new RegExp("^(?:\\s*.){0," + this._selectionMaxLen + "}");
            pattern.test(selText);
            selText = RegExp.lastMatch;
          }
          return selText.replace(/^\s+/, "")
                        .replace(/\s+$/, "")
                        .replace(/\s+/g, " ")
                        .substr(0, this._selectionMaxLen);
        ]]></body>
      </method>

      <!--
        - Opens the findbar, focuses the findfield and selects its contents.
        - Also flashes the findbar the first time it's used.
        - @param aMode
        -        the find mode to be used, which is either FIND_NORMAL,
        -        FIND_TYPEAHEAD or FIND_LINKS. If not passed, the last
        -        find mode if any or FIND_NORMAL.
        -->
      <method name="startFind">
        <parameter name="aMode"/>
        <body><![CDATA[
          var prefsvc =
            Components.classes["@mozilla.org/preferences-service;1"]
                      .getService(Components.interfaces.nsIPrefBranch2);
          var userWantsPrefill = true;
          this.open(aMode);

          if (this._flashFindBar) {
            this._flashFindBarTimeout =
              setInterval(function(aSelf) { aSelf._flash(); }, 500, this);
            prefsvc.setIntPref("accessibility.typeaheadfind.flashBar",
                               --this._flashFindBar);
          }

          if (this.prefillWithSelection)
            userWantsPrefill =
              prefsvc.getBoolPref("accessibility.typeaheadfind.prefillwithselection");

          var initialString = (this.prefillWithSelection && userWantsPrefill) ?
                              this._getInitialSelection() : null;
          if (initialString) {
            this._findField.value = initialString;
            this._enableFindButtons(true);
          }
          else if (!this._findField.value)
            this._enableFindButtons(false);

          this._findField.select();
          this._findField.focus();
        ]]></body>
      </method>

      <!--
        - Convenient alias to startFind(gFindBar.FIND_NORMAL);
        -
        - You should generally map the window's find command to this method.
        -   e.g. <command name="cmd_find" oncommand="gFindBar.onFindCommand();"/>
        -->
      <method name="onFindCommand">
        <body><![CDATA[
          this.startFind(this.FIND_NORMAL);
        ]]></body>
      </method>

      <!--
        - Stub for find-next and find-previous commands
        - @param aFindPrevious
        -        true for find-previous, false otherwise.
        -->
      <method name="onFindAgainCommand">
        <parameter name="aFindPrevious"/>
        <body><![CDATA[
          var findString = this._browser.fastFind.searchString || this._findField.value;
          if (!findString) {
            this.startFind();
            return;
          }

          // user explicitly requested another search, so do it even if we think it'll fail
          this._findFailedString = null;

          var res;
          // Ensure the stored SearchString is in sync with what we want to find
          if (this._findField.value != this._browser.fastFind.searchString)
            res = this._find(this._findField.value);
          else
            res = this._findAgain(aFindPrevious);

          if (res == this.nsITypeAheadFind.FIND_NOTFOUND) {
            if (this.open()) {
              if (this._findMode != this.FIND_NORMAL)
                this._setFindCloseTimeout();
              this._findField.focus();
              this._findField.focus();
              this._updateStatusUI(res, aFindPrevious);
            }
          }
        ]]></body>
      </method>
    </implementation>

    <handlers>
      <handler event="keypress" keycode="VK_ESCAPE" phase="capturing" action="this.close();" preventdefault="true"/>
    </handlers>
  </binding>
</bindings>