icon.js

function tabExists(tabId, onExists, onNotExists) {
  chrome.windows.getAll({
    populate: true
  }, function(windows) {
    for (var i = 0, window; window = windows[i]; i++) {
      for (var j = 0, tab; tab = window.tabs[j]; j++) {
        if (tab.id == tabId) {
          onExists && onExists(tab);
          return;
        }
      }
    }
    onNotExists && onNotExists();
  });
}
/**
 * 设置icon状态
 * @param {*} tabId 
 */
function setIconStatus(tabId) {
  var badgeText = "";
  var badgeColor = [255, 255, 255, 255];
  var iconPath = {
    '32': 'icon/icon32b.png'
  };
  if (GLOBAL.blockTabs[tabId] && GLOBAL.blockTabs[tabId].length !== 0) {
    badgeText = GLOBAL.blockTabs[tabId].length.toString();
    badgeColor = [255, 0, 0, 255];
    iconPath = {
      '32': 'icon/icon32.png'
    };
  }
  tabExists(tabId, function() {
    setTimeout((tabId)=>{
        if (!GLOBAL.blockTabs[tabId] || GLOBAL.blockTabs[tabId].length <= 1) {
          chrome.browserAction.setIcon({
            path: iconPath,
            tabId: tabId
          });
        }
        chrome.browserAction.setBadgeBackgroundColor({
          color: badgeColor,
          tabId: tabId
        });
        chrome.browserAction.setBadgeText({
          text: badgeText,
          tabId: tabId
        });
    },100);
  });
}

/**
 * 标签激活
 * @param {*} activeInfo 
 */
function tabActived(activeInfo) {
  setIconStatus(activeInfo.tabId);
}

/**
 * 标签关闭
 * @param {*} tabId 
 * @param {*} removeInfo 
 */
function tabRemoved(tabId, removeInfo) {
  if (GLOBAL.blockTabs[tabId]) {
    delete GLOBAL.blockTabs[tabId];
  }
  if (GLOBAL.fingerPrints[tabId]) {
    delete GLOBAL.fingerPrints[tabId];
  }
}

/**
 * 标签重载
 * @param {*} details 
 */
function beforeNavigate(details) {
  if (details.frameId == 0) {
    if (GLOBAL.blockTabs[details.tabId]) {
      delete GLOBAL.blockTabs[details.tabId];
    }
    if (GLOBAL.fingerPrints[details.tabId]) {
      delete GLOBAL.fingerPrints[details.tabId];
    }
  }
  setIconStatus(details.tabId);
}

chrome.tabs.onRemoved.addListener(tabRemoved);
chrome.tabs.onActivated.addListener(tabActived);
chrome.webNavigation.onBeforeNavigate.addListener(beforeNavigate);