Chrome扩展程序 - 仅在新加载时清除WebRequest

Question

我正在尝试编写一个扩展，将所有http标头信息存储在一个数组中，以便我可以通过弹出窗口显示它。为了保持一个整洁的弹出页面，我需要在每次新加载后清除标题，但我需要一种方法来告诉它何时应该发生。

1）清除新的requestId

• 不起作用，因为每次都会更改requestId

2）在最后一次onComplete发生后，在webRequest之前清除

• 不起作用，因为每个图像，main_frame等都以onComplete结束，因此它会在每个图像或页面完成后清除

有什么建议吗？这是我到目前为止所做的（选项2）......如果你只使用main_frame但这并不理想，它会有用。

beforeRedirect = function( details )  {
    if (debug && details.tabId > 0 && typeof(tabs[details.tabId]) != 'undefined') {
        //returns all info stored in tabs array for the current tab
        log('The following data was recorded and stored', tabs[details.tabId]); 
    }
    //adds current tab to tabs array and stores header info in there
    var tabId = details.tabId;
    var url = details.url;
    details.type = 'normal';

    //if tab is null... init
    if (typeof(tabs[details.tabId]) == 'undefined') {
        tabs[tabId] = {};
        tabs[tabId].isRedirect = false;
    }

    //set Header info
    tabs[tabId].lasactive = new Date().getTime();
    if (typeof(details.redirectUrl) != 'undefined') {
        tabs[tabId].isRedirect = true;
        details.type = 'redirect';
    }

    if (typeof(tabs[tabId].requestId) == 'undefined' || tabs[tabId].completed) {
        tabs[tabId].requestId = details.requestId;
        log('clearing tab['+tabId+'] headers');
        tabs[tabId].requestHeader = []; //init or reset
    }
    tabs[tabId].requestHeader.push(details);

    log('Saved tab '+tabId+'\'s '+details.type+' header information', details);

    return;
}

completed = function( details )  {
    if (debug && details.tabId > 0 && typeof(tabs[details.tabId]) != 'undefined') {
        //returns all info stored in tabs array for the current tab
        log('The following data was recorded and stored', tabs[details.tabId]); 
    }
    //adds current tab to tabs array and stores header info in there
    var tabId = details.tabId;
    var url = details.url;
    details.type = 'normal';

    //if tab is null... init
    if (typeof(tabs[details.tabId]) == 'undefined') {
        tabs[tabId] = {};
        tabs[tabId].isRedirect = false;
    }

    //set Header info
    tabs[tabId].lasactive = new Date().getTime();
    if (typeof(details.redirectUrl) != 'undefined') {
        tabs[tabId].isRedirect = true;
        details.type = 'redirect';
    }

    if (typeof(tabs[tabId].requestId) == 'undefined' || tabs[tabId].completed) {
        log('clearing tab['+tabId+'] headers');
        tabs[tabId].requestId = details.requestId;
        tabs[tabId].requestHeader = []; //init or reset
    }
    tabs[tabId].requestHeader.push(details);
    tabs[tabId].completed = true;
    log('Saved tab '+tabId+'\'s '+details.type+' header information', details);

    return;
}