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<?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"?>
<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=1048178
-->
<window title="Mozilla Bug 1048178"
  xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
  <script type="application/javascript" src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"/>
  <script type="application/javascript" src="chrome://mochikit/content/tests/SimpleTest/EventUtils.js"/>

  <!-- test results are displayed in the html:body -->
  <body xmlns="http://www.w3.org/1999/xhtml"/>
  <a href="https://bugzilla.mozilla.org/show_bug.cgi?id=1048178"
     target="_blank">Mozilla Bug 1048178</a>

  <hbox>
      <scrollbar id="scroller"
                 orient="horizontal"
                 curpos="0"
                 maxpos="500"
                 pageincrement="500"
                 width="500"
                 style="margin:0"/>
  </hbox>

  <!-- test code goes here -->
  <script type="application/javascript"><![CDATA[

/** Test for Bug 1048178 **/
var scrollbarTester = {
  scrollbar: null,
  startTest: function() {
    this.scrollbar = $("scroller");
    this.setScrollToClick(false);
    this.testThumbDragging();
    SimpleTest.finish();
  },
  testThumbDragging: function() {
    var x = 400; // on the right half of the scroolbar
    var y = 5;

    this.mousedown(x, y, 0);
    this.mousedown(x, y, 2);
    this.mouseup(x, y, 2);
    this.mouseup(x, y, 0);

    var newPos = this.getPos(); // sould be '500'

    this.mousedown(x, y, 0);
    this.mousemove(x-1, y, 0);
    this.mouseup(x-1, y, 0);

    var newPos2 = this.getPos();
    ok(newPos2 < newPos,
       "Scrollbar thumb should follow the mouse when dragged.");
  },
  setScrollToClick: function(value) {
    var prefService = Components.classes["@mozilla.org/preferences-service;1"]
                                .getService(Components.interfaces.nsIPrefService);
    var uiBranch = prefService.getBranch("ui.");
    uiBranch.setIntPref("scrollToClick", value ? 1 : 0);
  },
  getPos: function() {
    return this.scrollbar.getAttribute("curpos");
  },
  mousedown: function(x, y, button) {
    synthesizeMouse(this.scrollbar, x, y, { type: "mousedown", 'button': button });
  },
  mousemove: function(x, y, button) {
    synthesizeMouse(this.scrollbar, x, y, { type: "mousemove", 'button': button });
  },
  mouseup: function(x, y, button) {
    synthesizeMouse(this.scrollbar, x, y, { type: "mouseup", 'button': button });
  }
}

function doTest() {
  setTimeout(function() { scrollbarTester.startTest(); }, 0);
}

SimpleTest.waitForExplicitFinish();
addLoadEvent(doTest);

]]></script>
</window>