javascript - Safari 扩展，直接从工具栏访问页面/内容？

Question

是否可以直接从 (Safari) 工具栏访问 Web 内容？我现在可以从上下文菜单访问它，但不知道我如何在工具栏上获得相同的功能。

这是我得到的:

// injected
document.addEventListener("contextmenu", handleMessage, false);
function handleMessage(msgEvent) {
     var sel = '';
     sel = window.parent.getSelection()+'';
     safari.self.tab.setContextMenuEventUserInfo(msgEvent, sel);
}

// global
safari.application .addEventListener("command", performCommand, false); 
function performCommand(event) {
console.log('performCommand');
     if (event.command == "abc") {
          var query = event.userInfo;
          console.log(query);
          alert(query);
     }
}

但是我如何直接从工具栏获取这些内容？？

Answer 1

好的，基本上它是这样工作的:

• 在全局调用 performCommand(通过单击工具栏)，调度事件
• 此事件在 handleGextText 中捕获
• 在 handleGextText 中，您执行需要执行的操作并调用 safari.self.tab.dispatchMessage 这会将事件分派(dispatch)回全局
• 在全局范围内，事件被 handleEvent 捕获

>

// Global Script
safari.application.addEventListener("command", performCommand, false);  
safari.application.addEventListener("message", handleEvent, false);

// send message
function performCommand(event) {
    console.log('command:' + event.command);

    if (event.command == "abc") {
        console.log("msg: my message");
        safari.application.activeBrowserWindow.activeTab.page.dispatchMessage("msg", "do-something");           
    }       
}

function handleEvent(event) {
    var messageName = event.name;
    console.log("evenname:" + event.name);      
    if (messageName === "did-something") { 

        var msg = event.message;

        // do something
    }       
}


// Injected Script
if (window.top === window) { // inject only once!
    console.log("add event listners [injected.js]");
    safari.self.addEventListener("message", handleGextText, false);
}

function handleGextText(event) {
    console.log("evenname:" + event.name);
    console.log("evenmsg :" + event.message);

    var messageName = event.name;
    var messageData = event.message;
    if (messageName === "msg") { 
        if (messageData === "do-something") {           
            console.log('msg received: ' + event.name);
            var sel = '';

            // do what you need to do and  dispatch message back to Global
            console.log("send message to toolbar");             
            safari.self.tab.dispatchMessage("did-something", sel);          
        }
     }
}