gecko/browser/base/content/test/general/browser_visibleLabel.js

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/* Any copyright is dedicated to the Public Domain.
* http://creativecommons.org/publicdomain/zero/1.0/ */
/* Tests:
* verify that the visibleLabel attribute works
* verify the TabLabelModified event works for both existing and new tabs
*/
function test() {
waitForExplicitFinish();
registerCleanupFunction(function() {
gBrowser.removeCurrentTab({animate: false});
});
let tab = gBrowser.selectedTab = gBrowser.addTab("about:blank",
{skipAnimation: true});
tab.linkedBrowser.addEventListener("load", function onLoad(event) {
event.currentTarget.removeEventListener("load", onLoad, true);
executeSoon(afterLoad);
}, true);
}
function afterLoad() {
let tab = gBrowser.selectedTab;
let xulLabel = document.getAnonymousElementByAttribute(tab, "anonid",
"tab-label");
// Verify we're starting out on the right foot
is(tab.label, "New Tab", "Initial tab label is default");
is(xulLabel.value, "New Tab", "Label element is default");
is(tab.visibleLabel, "New Tab", "visibleLabel is default");
// Check that a normal label setting works correctly
tab.label = "Hello, world!";
is(tab.label, "Hello, world!", "tab label attribute set via tab.label");
is(xulLabel.value, "Hello, world!", "xul:label set via tab.label");
is(tab.visibleLabel, "Hello, world!", "visibleLabel set via tab.label");
// Check that setting visibleLabel only affects the label element
tab.visibleLabel = "Goodnight, Irene";
is(tab.label, "Hello, world!", "Tab.label unaffected by visibleLabel setter");
is(xulLabel.value, "Goodnight, Irene",
"xul:label set by visibleLabel setter");
is(tab.visibleLabel, "Goodnight, Irene",
"visibleLabel attribute set by visibleLabel setter");
// Check that setting the label property hits everything
tab.label = "One more label";
is(tab.label, "One more label",
"Tab label set via label property after diverging from visibleLabel");
is(xulLabel.value, "One more label",
"xul:label set via label property after diverging from visibleLabel");
is(tab.visibleLabel, "One more label",
"visibleLabel set from label property after diverging from visibleLabel");
tab.addEventListener("TabLabelModified", overrideTabLabel, true);
tab.label = "This won't be the visibleLabel";
}
function overrideTabLabel(aEvent) {
aEvent.target.removeEventListener("TabLabelModified", overrideTabLabel, true);
aEvent.preventDefault();
aEvent.stopPropagation();
aEvent.target.visibleLabel = "Handler set this as the visible label";
executeSoon(checkTabLabelModified);
}
function checkTabLabelModified() {
let tab = gBrowser.selectedTab;
let xulLabel = document.getAnonymousElementByAttribute(tab, "anonid",
"tab-label");
is(tab.label, "This won't be the visibleLabel",
"Tab label set via label property that triggered event");
is(xulLabel.value, "Handler set this as the visible label",
"xul:label set by TabLabelModified handler");
is(tab.visibleLabel, "Handler set this as the visible label",
"visibleLabel set by TabLabelModified handler");
gBrowser.removeCurrentTab({animate: false});
executeSoon(checkTabLabelModifiedOnNewTab);
}
function checkTabLabelModifiedOnNewTab() {
gBrowser.tabContainer.addEventListener("TabLabelModified",
handleTabLabelModifiedOnNewTab, true);
let tab = gBrowser.selectedTab = gBrowser.addTab("about:blank",
{skipAnimation: true});
}
function handleTabLabelModifiedOnNewTab(aEvent) {
gBrowser.tabContainer.removeEventListener("TabLabelModified",
handleTabLabelModifiedOnNewTab, true);
ok(true, "Event received from new tab default being set");
executeSoon(finish);
}