Chrome扩展同步调用 - 创建窗口窗口关闭后，才 [英] Chrome Extensions synchronous calls - create window only after window closed

问题描述

结果
我有这个code：

I have this code:

function voteNewWindow(mailNum) {
    chrome.windows.create({
        url: 'http://www.google.com',
        incognito: true
    }, function (window) {
        console.log('created ' + window.id);
        chrome.tabs.query({
            active: true,
            windowId: window.id
        }, function (tabs) {
            var tab = tabs[0];
            chrome.tabs.executeScript(tab.id, {
                file: "jquery-2.1.1.min.js"
            }, function () {
                chrome.tabs.executeScript(tab.id, {
                    file: "content_script.js"
                }, function () {
                    chrome.tabs.sendMessage(tab.id, {
                        email: JSON.parse(localStorage.mailList)[mailNum]
                    }, function (response) {
                        console.log(response);
                        chrome.windows.remove(window.id);
                        console.log('window ' + window.id + " removed");
                    });
                });

            });
        });

    });
}


function execute() {

    for (var i = 0; i < JSON.parse(localStorage.mailList).length; i++) {

        voteNewWindow(i);
    }
}

的问题是，所有窗口同时打开。我想，当一个之前被关闭一个窗口只开放。我想voteNewWindow（）来完成所有它之前，另一voteNewWindow做（）执行。结果
任何帮助将是AP preciated。谢谢

The problem is that all windows open at the same time. I want a window to open only when the one before is closed. I want voteNewWindow() to finish all it has to do before another voteNewWindow() executes.
Any help would be appreciated. Thanks

推荐答案

JavaScript的诺言救援！

function voteNewWindow(mailNum) {
  return function(){
    return new Promise( function (resolve, reject){
      chrome.windows.create({
      /* ... */
                        }, function (response) {
                            console.log(response);
                            chrome.windows.remove(window.id);
                            console.log('window ' + window.id + " removed");
                            resolve(); // Proceed to the next
                        });
      /* ... */
    }
  }
}

function execute() {
  var sequence = Promise.resolve();
  for (var i = 0; i < JSON.parse(localStorage.mailList).length; i++) {
    sequence = sequence.then(voteNewWindow(i));
  }
}

请参阅本节以了解发生了什么这里。基本上，我们通过创建粘在一起承诺链然后，以确保下一个会开始只有previous一个人完成之后执行。

See this section to understand what's happening here. Basically, we're creating a chain of Promises glued together by then, which ensures the next one will start executing only after the previous one has finished.

如果您需要在做任何其他操作的execute（），把它在序列的末尾：

If you need to do any other action after execute(), put it at the end of the sequence:

function execute(callback) {
  var sequence = Promise.resolve();
  for (var i = 0; i < JSON.parse(localStorage.mailList).length; i++) {
    sequence = sequence.then(voteNewWindow(i));
  }
  sequence.then(callback);
}

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