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Bug 1186774 - Scroll position (scrollX/scrollY) should be restored after popstate, not before, r=bz

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This commit is contained in:
Olli Pettay 2015-08-28 22:25:54 +03:00
parent da74c90a3f
commit 258a1d45ee
3 changed files with 59 additions and 2 deletions
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9
docshell/base/nsDocShell.cpp
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@ -9989,11 +9989,12 @@ nsDocShell::InternalLoad(nsIURI* aURI,
/* restore previous position of scroller(s), if we're moving
* back in history (bug 59774)
*/
nscoord bx, by;
bool needsScrollPosUpdate = false;
if (mOSHE && (aLoadType == LOAD_HISTORY ||
aLoadType == LOAD_RELOAD_NORMAL)) {
nscoord bx, by;
needsScrollPosUpdate = true;
mOSHE->GetScrollPosition(&bx, &by);
SetCurScrollPosEx(bx, by);
}
// Dispatch the popstate and hashchange events, as appropriate.
@ -10009,6 +10010,10 @@ nsDocShell::InternalLoad(nsIURI* aURI,
win->DispatchSyncPopState();
}
if (needsScrollPosUpdate && win->HasActiveDocument()) {
SetCurScrollPosEx(bx, by);
}
if (doHashchange) {
// Note that currentURI hasn't changed because it's on the
// stack, so we can just use it directly as the old URI.

1
docshell/test/mochitest.ini
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@ -99,6 +99,7 @@ skip-if = (buildapp == 'b2g' && toolkit != 'gonk') #Bug 931116, b2g desktop spec
skip-if = (buildapp == 'b2g' && toolkit != 'gonk') #Bug 931116, b2g desktop specific, initial triage
[test_bug797909.html]
[test_bug1045096.html]
[test_bug1186774.html]
[test_framedhistoryframes.html]
skip-if = (buildapp == 'b2g' && toolkit != 'gonk') || toolkit == 'android' #Bug 931116, b2g desktop specific, initial triage, and also bug 784321
support-files = file_framedhistoryframes.html

51
docshell/test/test_bug1186774.html Normal file
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@ -0,0 +1,51 @@
<!DOCTYPE HTML>
<html>
<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=1186774
-->
<head>
<meta charset="utf-8">
<title>Test for Bug 1186774</title>
<script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
<script type="application/javascript">
/** Test for Bug 1186774 **/
var child;
function runTest() {
child = window.open("data:text/html,<div style='height: 9000px;'></div>", "", "width=100,height=100");
child.onload = function() {
setTimeout(function() {
child.scrollTo(0, 0);
child.history.pushState({}, "initial");
child.scrollTo(0, 3000);
child.history.pushState({}, "scrolled");
child.scrollTo(0, 6000);
child.history.back();
});
}
child.onpopstate = function() {
is(child.scrollY, 6000, "Shouldn't have scrolled before popstate");
child.close();
SimpleTest.finish();
}
}
SimpleTest.waitForExplicitFinish();
addLoadEvent(runTest);
</script>
</head>
<body>
<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1186774">Mozilla Bug 1186774</a>
<p id="display"></p>
<div id="content" style="display: none">
</div>
<pre id="test">
</pre>
</body>
</html>