uBlock/js/tab.js
2014-06-23 18:42:43 -04:00

166 lines
5.3 KiB
JavaScript

/*******************************************************************************
µBlock - a Chromium browser extension to block requests.
Copyright (C) 2014 Raymond Hill
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see {http://www.gnu.org/licenses/}.
Home: https://github.com/gorhill/uBlock
*/
/* global chrome, µBlock */
/******************************************************************************/
(function(){
function onTabCreated(tab) {
// Can this happen?
if ( tab.id < 0 || !tab.url || tab.url === '' ) {
return;
}
µBlock.bindTabToPageStats(tab.id, tab.url);
}
chrome.tabs.onCreated.addListener(onTabCreated);
function onTabUpdated(tabId, changeInfo, tab) {
// Can this happen?
if ( !tab.url || tab.url === '' ) {
return;
}
if ( changeInfo.url ) {
µBlock.bindTabToPageStats(tabId, tab.url);
µBlock.updateBadge(tabId);
}
}
chrome.tabs.onUpdated.addListener(onTabUpdated);
function onTabRemoved(tabId) {
if ( tabId < 0 ) {
return;
}
µBlock.unbindTabFromPageStats(tabId);
}
chrome.tabs.onRemoved.addListener(onTabRemoved);
function onBeforeNavigateCallback(details) {
if ( details.frameId > 0 ) {
return;
}
µBlock.bindTabToPageStats(details.tabId, details.url);
}
chrome.webNavigation.onBeforeNavigate.addListener(onBeforeNavigateCallback);
// Initialize internal state with maybe already existing tabs
chrome.tabs.query({ url: '<all_urls>' }, function(tabs) {
var i = tabs.length;
while ( i-- ) {
µBlock.bindTabToPageStats(tabs[i].id, tabs[i].url);
}
});
})();
/******************************************************************************/
/******************************************************************************/
// https://github.com/gorhill/httpswitchboard/issues/303
// Some kind of trick going on here:
// Any scheme other than 'http' and 'https' is remapped into a fake
// URL which trick the rest of µBlock into being able to process an
// otherwise unmanageable scheme. µBlock needs web page to have a proper
// hostname to work properly, so just like the 'chromium-behind-the-scene'
// fake domain name, we map unknown schemes into a fake '{scheme}-scheme'
// hostname. This way, for a specific scheme you can create scope with
// rules which will apply only to that scheme.
µBlock.normalizePageURL = function(pageURL) {
var uri = this.URI.set(pageURL);
if ( uri.scheme === 'https' || uri.scheme === 'http' ) {
return uri.normalizedURI();
}
return '';
}
/******************************************************************************/
// Create an entry for the tab if it doesn't exist.
µBlock.bindTabToPageStats = function(tabId, pageURL) {
// First unbind whatever page store is bound to the tab id.
this.unbindTabFromPageStats(tabId);
// https://github.com/gorhill/httpswitchboard/issues/303
// Normalize to a page-URL.
pageURL = this.normalizePageURL(pageURL);
// do not create stats store for urls which are of no interests
if ( pageURL === '' ) {
return null;
}
// Bring back existing page store or create new one.
var pageStore = this.pageStores[tabId];
if ( !pageStore ) {
var k = pageURL + ' ' + tabId;
pageStore = this.pageStoreDump[k];
if ( pageStore ) {
delete this.pageStoreDump[k];
}
}
if ( !pageStore ) {
pageStore = this.PageStore.factory(tabId, pageURL);
pageStore.perLoadAllowedRequestCount =
pageStore.perLoadBlockedRequestCount = 0;
}
this.pageStores[tabId] = pageStore;
return pageStore;
};
µBlock.unbindTabFromPageStats = function(tabId) {
var pageStore = this.pageStores[tabId];
if ( pageStore ) {
//pageStore.disposeTime = Date.now();
//this.pageStoreDump[pageStore.pageURL + ' ' + tabId] = pageStore;
}
delete this.pageStores[tabId];
};
/******************************************************************************/
µBlock.pageUrlFromTabId = function(tabId) {
var pageStore = this.pageStores[tabId];
return pageStore ? pageStore.pageURL : '';
};
µBlock.pageUrlFromPageStats = function(pageStats) {
if ( pageStats ) {
return pageStats.pageURL;
}
return '';
};
µBlock.pageStoreFromTabId = function(tabId) {
return this.pageStores[tabId];
};
/******************************************************************************/
µBlock.forceReload = function(pageURL) {
var tabId = this.tabIdFromPageUrl(pageURL);
if ( tabId ) {
chrome.tabs.reload(tabId, { bypassCache: true });
}
};