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code review: adding the option buttons at launch time is not critical, this can be deferred

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gorhill 2015-12-09 13:23:16 -05:00
parent 8d41afeb7a
commit 9ce6f9eb23
1 changed files with 72 additions and 38 deletions
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110
platform/firefox/vapi-background.js
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@ -3372,55 +3372,89 @@ vAPI.contextMenu.remove = function() {
/******************************************************************************/
/******************************************************************************/
var optionsObserver = {
addonId: 'uBlock0@raymondhill.net',
var optionsObserver = (function() {
var addonId = 'uBlock0@raymondhill.net';
register: function() {
Services.obs.addObserver(this, 'addon-options-displayed', false);
cleanupTasks.push(this.unregister.bind(this));
var browser = tabWatcher.currentBrowser();
if ( !browser ) {
return;
var commandHandler = function() {
switch ( this.id ) {
case 'showDashboardButton':
vAPI.tabs.open({ url: 'dashboard.html', index: -1 });
break;
case 'showNetworkLogButton':
vAPI.tabs.open({ url: 'logger-ui.html', index: -1 });
break;
default:
break;
}
};
// https://github.com/gorhill/uBlock/issues/948
// Older versions of Firefox can throw here when looking up `currentURI`.
var currentURI;
try {
currentURI = browser.currentURI;
} catch (ex) {
}
if ( currentURI && currentURI.spec === 'about:addons' ) {
this.observe(browser.contentDocument, 'addon-enabled', this.addonId);
}
},
unregister: function() {
Services.obs.removeObserver(this, 'addon-options-displayed');
},
setupOptionsButton: function(doc, id, page) {
var setupOptionsButton = function(doc, id) {
var button = doc.getElementById(id);
if ( button === null ) {
return;
}
button.addEventListener('command', function() {
vAPI.tabs.open({ url: page, index: -1 });
});
button.addEventListener('command', commandHandler);
button.label = vAPI.i18n(id);
},
};
observe: function(doc, topic, addonId) {
if ( addonId !== this.addonId ) {
return;
var setupOptionsButtons = function(doc) {
setupOptionsButton(doc, 'showDashboardButton');
setupOptionsButton(doc, 'showNetworkLogButton');
};
var observer = {
observe: function(doc, topic, id) {
if ( id !== addonId ) {
return;
}
setupOptionsButtons(doc);
}
};
this.setupOptionsButton(doc, 'showDashboardButton', 'dashboard.html');
this.setupOptionsButton(doc, 'showNetworkLogButton', 'logger-ui.html');
}
};
// https://github.com/gorhill/uBlock/issues/948
// Older versions of Firefox can throw here when looking up `currentURI`.
var canInit = function() {
var ok;
try {
var tabBrowser = tabWatcher.currentBrowser();
ok = tabBrowser &&
tabBrowser.currentURI &&
tabBrowser.contentDocument &&
tabBrowser.contentDocument.readyState === 'complete';
} catch (ex) {
}
return ok;
};
// Manually add the buttons if the `about:addons` page is already
// opened.
var init = function() {
if ( canInit() ) {
var tabBrowser = tabWatcher.currentBrowser();
if ( tabBrowser.currentURI.spec === 'about:addons' ) {
setupOptionsButtons(tabBrowser.contentDocument);
}
}
};
var unregister = function() {
Services.obs.removeObserver(observer, 'addon-options-displayed');
};
var register = function() {
Services.obs.addObserver(observer, 'addon-options-displayed', false);
cleanupTasks.push(unregister);
deferUntil(canInit, init);
};
return {
register: register,
unregister: unregister
};
})();
optionsObserver.register();