[英]Listen to pin/unpin tab events in Firefox Add-on SDK
我正在编写Firefox附加SDK扩展。 我希望在固定或取消固定任何标签时收到通知。 不幸的是, sdk/tabs
模块不提供此类事件。 是否有一些低级API提供了用于固定/取消固定标签的事件?
没有Firefox附加SDK 低级API ,该API提供了一种侦听被固定或未固定的选项卡的方法。 “附加SDK低级API”是API的非常具体的列表,仅在附加SDK中定义。 您的请求不仅限于特定于附加SDK的API,而且还限于在附加SDK中起作用的所有Firefox API,几乎是所有Firefox API,但WebExtensions除外。
您可以通过侦听您感兴趣的window
的XUL <tabs>
元素上的TabPinned
和TabUnpinned
事件来获取此类事件。 您可以使用getTabContainer(window)
获得XUL <tabs>
元素。 如果要在所有浏览器窗口中获取所有此类事件,则需要将事件添加到每个浏览器窗口的tabContainer
(XUL <tabs>
元素)中。 您可以在“ MDN事件参考”页面中查看选项卡特定事件的列表。
以下是基于Firefox附加SDK的扩展,它将在所有窗口中侦听TabPinned
和TabUnpinned
事件。
index.js :
var sdkWinUtils = require('sdk/window/utils');
var sdkTabsUtils = require('sdk/tabs/utils');
var sdkWindows = require("sdk/windows");
//For testing, open the Browser Console
sdkWinUtils.getMostRecentBrowserWindow()
.document.getElementById('menu_browserConsole').doCommand();
function tabPinned(event) {
let tabId = sdkTabsUtils.getTabId(event.target);
console.log('Pinned Tab ID:',tabId);
}
function tabUnpinned(event) {
let tabId = sdkTabsUtils.getTabId(event.target);
console.log('Unpinned Tab ID:',tabId);
}
function addTabPinUnpinListenersInWindow(win){
//win can be either a browserWindow provided by the
// sdkWindows.browserWindows.on('open',);
// event, or nsIDOMWindow instances provided in the array from
// sdkWinUtils.windows()
// We can distinguish between the two by using
// sdkWinUtils.isBrowser(win)
let container;
if(sdkWinUtils.isBrowser(win)){
container = sdkTabsUtils.getTabContainer(win);
}else{
let { viewFor } = require("sdk/view/core");
container = sdkTabsUtils.getTabContainer(viewFor(win));
}
container.addEventListener("TabPinned", tabPinned, false);
container.addEventListener("TabUnpinned", tabUnpinned, false);
}
function removeTabPinUnpinListenersInWindow(win){
let container = sdkTabsUtils.getTabContainer(win);
container.removeEventListener("TabPinned", tabPinned, false);
container.removeEventListener("TabUnpinned", tabUnpinned, false);
}
function forEachOpenWindow(func){
let allWindows = sdkWinUtils.windows('navigator:browser', {includePrivate:true});
for(let win of allWindows){
func(win);
}
}
function forEachOpenWindowAndAllNewWindows(func){
forEachOpenWindow(func);
//Listen for new windows opening and add tab pin/unpin listeners:
sdkWindows.browserWindows.on('open',func);
}
function removeAllListeners(){
//To be called upon shutdown for add-on upgrade/disable/removal
//Remove new window open listener
sdkWindows.browserWindows.off('open',addTabPinUnpinListenersInWindow);
//Remove tab pin/unpin listeners
forEachOpenWindow(removeTabPinUnpinListenersInWindow);
}
//Add listeners to all open windows and all which open
forEachOpenWindowAndAllNewWindows(addTabPinUnpinListenersInWindow);
//Clean up if Firefox is not shutting down (e.g. the add-on is disabled by user).
exports.onUnload = reason => {
if(reason !== 'shutdown'){
//The add-on is being unloaded and it is not because Firefox is sutting down.
removeAllListeners();
}
};
package.json :
{
"title": "Listen to tab pin/unpin",
"name": "listen-to-tab-pin-unpin",
"version": "0.0.1",
"description": "Output to console when a tab is pinned or unpinned.",
"main": "index.js",
"author": "Makyen",
"permissions": {"private-browsing": true},
"engines": {
"firefox": ">=38.0a1",
"fennec": ">=38.0a1"
},
"license": "MIT",
"keywords": [
"jetpack"
]
}
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