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<?xml version="1.0"?>
<!-- This Source Code Form is subject to the terms of the Mozilla Public
   - License, v. 2.0. If a copy of the MPL was not distributed with this
   - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->


<bindings id="checkboxBindings"
   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">

  <binding id="checkbox"
    extends="chrome://global/content/bindings/general.xml#basetext">
    <content>
      <xul:image class="checkbox-check" xbl:inherits="checked,disabled"/>
      <xul:hbox class="checkbox-label-box" flex="1">
        <xul:image class="checkbox-icon" xbl:inherits="src"/>
        <xul:label class="checkbox-label" xbl:inherits="xbl:text=label,accesskey,crop" flex="1"/>
      </xul:hbox>
    </content>

    <implementation>
      <method name="setChecked">
        <parameter name="aValue"/>
        <body>
        <![CDATA[
          var change = (aValue != (this.getAttribute("checked") == "true"));
          if (aValue)
            this.setAttribute("checked", "true");
          else
            this.removeAttribute("checked");
          if (change) {
            var event = document.createEvent("Events");
            event.initEvent("CheckboxStateChange", true, true);
            this.dispatchEvent(event);
          }
          return aValue;
        ]]>
        </body>
      </method>

      <!-- public implementation -->
      <property name="checked"    onset="return this.setChecked(val);"
                                  onget="return this.getAttribute('checked') == 'true';"/>
    </implementation>

    <handlers>
      <!-- While it would seem we could do this by handling oncommand, we need can't
           because any external oncommand handlers might get called before ours, and
           then they would see the incorrect value of checked. -->
      <handler event="click" button="0" action="if (!this.disabled) this.checked = !this.checked;"/>
      <handler event="keypress" key=" ">
        <![CDATA[
          this.checked = !this.checked;
          // Prevent page from scrolling on the space key.
          event.preventDefault();
        ]]>
      </handler>
    </handlers>
  </binding>

</bindings>