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Test Info:
/* Any copyright is dedicated to the Public Domain.
var stateBackup = ss.getBrowserState();
var statePinned = {
windows: [
{
tabs: [
{
entries: [
],
pinned: true,
},
],
},
],
};
var state = {
windows: [
{
tabs: [
{
entries: [
],
},
{
entries: [
],
},
{
entries: [
],
},
{
entries: [
],
},
],
},
],
};
function test() {
waitForExplicitFinish();
registerCleanupFunction(function () {
TabsProgressListener.uninit();
ss.setBrowserState(stateBackup);
});
TabsProgressListener.init();
window.addEventListener(
"SSWindowStateReady",
function () {
let firstProgress = true;
TabsProgressListener.setCallback(function (needsRestore, isRestoring) {
if (firstProgress) {
firstProgress = false;
is(isRestoring, 3, "restoring 3 tabs concurrently");
} else {
Assert.lessOrEqual(
isRestoring,
3,
"restoring max. 2 tabs concurrently"
);
}
if (0 == needsRestore) {
TabsProgressListener.unsetCallback();
waitForFocus(finish);
}
});
ss.setBrowserState(JSON.stringify(state));
},
{ once: true }
);
ss.setBrowserState(JSON.stringify(statePinned));
}
function countTabs() {
let needsRestore = 0,
isRestoring = 0;
for (let window of Services.wm.getEnumerator("navigator:browser")) {
if (window.closed) {
continue;
}
for (let i = 0; i < window.gBrowser.tabs.length; i++) {
let browserState = ss.getInternalObjectState(
window.gBrowser.tabs[i].linkedBrowser
);
if (browserState == TAB_STATE_RESTORING) {
isRestoring++;
} else if (browserState == TAB_STATE_NEEDS_RESTORE) {
needsRestore++;
}
}
}
return [needsRestore, isRestoring];
}
var TabsProgressListener = {
init() {
Services.obs.addObserver(this, "sessionstore-debug-tab-restored");
},
uninit() {
Services.obs.removeObserver(this, "sessionstore-debug-tab-restored");
this.unsetCallback();
},
setCallback(callback) {
this.callback = callback;
},
unsetCallback() {
delete this.callback;
},
observe(browser) {
TabsProgressListener.onRestored(browser);
},
onRestored(browser) {
if (
this.callback &&
ss.getInternalObjectState(browser) == TAB_STATE_RESTORING
) {
this.callback.apply(null, countTabs());
}
},
};