gecko/toolkit/content/tests/chrome/window_browser_drop.xul

<?xml version="1.0"?>
<?xml-stylesheet href="chrome://global/skin" type="text/css"?>

<window title="Browser Drop Tests"
        onload="loaded()"
        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"/>
  <script type="application/javascript"
          src="chrome://mochikit/content/tests/SimpleTest/ChromeUtils.js"/>

<script>
<![CDATA[

var link = null, name = null;
function handleLink(event, uri, linkname) { link = uri; name = linkname; }

function runTest()
{
  function expectLink(element, expectedLink, expectedName, data, testid)
  {
    link = "";
    name = "";
    synthesizeDrop(element, element, data, "", element.ownerDocument.defaultView);

    is(link, expectedLink, testid + " link");
    is(name, expectedName, testid + " name");
  }

  ["chrome", "content"].forEach(function (type) {
    var child = document.getElementById(type + "child");
    child.droppedLinkHandler = handleLink;

    expectLink(child, "http://www.mozilla.org", "http://www.mozilla.org",
               [ [ { type: "text/plain", data: "http://www.mozilla.org" } ] ],
               "text/plain drop on browser " + type);
    expectLink(child, "", "",
               [ [ { type: "text/link", data: "http://www.mozilla.org" } ] ],
               "text/link drop on browser " + type);
    expectLink(child, "http://www.example.com", "http://www.example.com",
               [ [ { type: "text/uri-list", data: "http://www.example.com\nhttp://www.mozilla.org" } ] ],
               "text/uri-list drop on browser " + type);
    expectLink(child, "http://www.example.com", "Example.com",
               [ [ { type: "text/x-moz-url", data: "http://www.example.com\nExample.com" } ] ],
               "text/x-moz-url drop on browser " + type);
    // dropping a chrome url should fail as we don't have a source node set,
    // defaulting to a source of file:///
    expectLink(child, "", "",
               [ [ { type: "text/x-moz-url", data: "chrome://browser/content/browser.xul" } ] ],
               "text/x-moz-url chrome url drop on browser " + type);
  });

  // stopPropagation should not prevent the browser link handling from occuring
  frames[1].wrappedJSObject.stopMode = true;
  var body = document.getElementById("contentchild").contentDocument.body;
  expectLink(body, "http://www.mozilla.org", "http://www.mozilla.org",
             [ [ { type: "text/uri-list", data: "http://www.mozilla.org" } ] ],
             "text/x-moz-url drop on browser with stopPropagation drop event");

  // canceling the event, however, should prevent the link from being handled
  frames[1].wrappedJSObject.cancelMode = true;
  expectLink(body, "", "",
             [ [ { type: "text/uri-list", data: "http://www.example.org" } ] ],
             "text/x-moz-url drop on browser with cancelled drop event");

  window.close();
  window.opener.wrappedJSObject.SimpleTest.finish();
}

function is(l, r, n) { window.opener.wrappedJSObject.SimpleTest.is(l,r,n); }
function ok(v, n) { window.opener.wrappedJSObject.SimpleTest.ok(v,n); }

function loaded()
{
  SimpleTest.waitForFocus(runTest);
}

]]>
</script>

<browser id="chromechild" src="about:blank"/>
<browser id="contentchild" type="content" width="100" height="100"
         src="data:text/html,&lt;html draggable='true'&gt;&lt;body draggable='true' style='width: 100px; height: 100px;' ondrop='if (window.stopMode) event.stopPropagation(); if (window.cancelMode) event.preventDefault();'&gt;&lt;/body&gt;&lt;/html&gt;"/>

</window>