mirror of
https://github.com/gorhill/uBlock.git
synced 2024-11-11 09:31:01 +01:00
1032 lines
30 KiB
JavaScript
1032 lines
30 KiB
JavaScript
/*******************************************************************************
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µBlock - a Chromium browser extension to block requests.
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Copyright (C) 2014 Raymond Hill
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see {http://www.gnu.org/licenses/}.
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Home: https://github.com/gorhill/uBlock
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*/
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/* global CSS, chrome */
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/******************************************************************************/
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/******************************************************************************/
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/*! http://mths.be/cssescape v0.2.1 by @mathias | MIT license */
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;(function(root) {
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if (!root.CSS) {
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root.CSS = {};
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}
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var CSS = root.CSS;
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var InvalidCharacterError = function(message) {
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this.message = message;
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};
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InvalidCharacterError.prototype = new Error();
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InvalidCharacterError.prototype.name = 'InvalidCharacterError';
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if (!CSS.escape) {
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// http://dev.w3.org/csswg/cssom/#serialize-an-identifier
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CSS.escape = function(value) {
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var string = String(value);
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var length = string.length;
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var index = -1;
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var codeUnit;
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var result = '';
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var firstCodeUnit = string.charCodeAt(0);
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while (++index < length) {
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codeUnit = string.charCodeAt(index);
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// Note: there’s no need to special-case astral symbols, surrogate
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// pairs, or lone surrogates.
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// If the character is NULL (U+0000), then throw an
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// `InvalidCharacterError` exception and terminate these steps.
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if (codeUnit === 0x0000) {
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throw new InvalidCharacterError(
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'Invalid character: the input contains U+0000.'
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);
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}
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if (
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// If the character is in the range [\1-\1F] (U+0001 to U+001F) or is
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// U+007F, […]
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(codeUnit >= 0x0001 && codeUnit <= 0x001F) || codeUnit == 0x007F ||
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// If the character is the first character and is in the range [0-9]
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// (U+0030 to U+0039), […]
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(index === 0 && codeUnit >= 0x0030 && codeUnit <= 0x0039) ||
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// If the character is the second character and is in the range [0-9]
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// (U+0030 to U+0039) and the first character is a `-` (U+002D), […]
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(
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index == 1 &&
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codeUnit >= 0x0030 && codeUnit <= 0x0039 &&
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firstCodeUnit == 0x002D
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)
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) {
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// http://dev.w3.org/csswg/cssom/#escape-a-character-as-code-point
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result += '\\' + codeUnit.toString(16) + ' ';
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continue;
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}
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// If the character is not handled by one of the above rules and is
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// greater than or equal to U+0080, is `-` (U+002D) or `_` (U+005F), or
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// is in one of the ranges [0-9] (U+0030 to U+0039), [A-Z] (U+0041 to
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// U+005A), or [a-z] (U+0061 to U+007A), […]
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if (
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codeUnit >= 0x0080 ||
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codeUnit == 0x002D ||
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codeUnit == 0x005F ||
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codeUnit >= 0x0030 && codeUnit <= 0x0039 ||
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codeUnit >= 0x0041 && codeUnit <= 0x005A ||
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codeUnit >= 0x0061 && codeUnit <= 0x007A
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) {
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// the character itself
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result += string.charAt(index);
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continue;
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}
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// Otherwise, the escaped character.
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// http://dev.w3.org/csswg/cssom/#escape-a-character
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result += '\\' + string.charAt(index);
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}
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return result;
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};
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}
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}(typeof global != 'undefined' ? global : this));
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/******************************************************************************/
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/******************************************************************************/
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// Cut & pasted here from reference implementation in messaging-client.js
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// because this is an injected script.
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var messaging = (function(name){
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var port = null;
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var requestId = 1;
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var requestIdToCallbackMap = {};
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var listenCallback = null;
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var onPortMessage = function(details) {
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if ( typeof details.id !== 'number' ) {
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return;
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}
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// Announcement?
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if ( details.id < 0 ) {
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if ( listenCallback ) {
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listenCallback(details.msg);
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}
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return;
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}
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var callback = requestIdToCallbackMap[details.id];
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if ( !callback ) {
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return;
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}
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// Must be removed before calling client to be sure to not execute
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// callback again if the client stops the messaging service.
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delete requestIdToCallbackMap[details.id];
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callback(details.msg);
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};
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var start = function(name) {
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port = chrome.runtime.connect({ name: name });
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port.onMessage.addListener(onPortMessage);
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// https://github.com/gorhill/uBlock/issues/193
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port.onDisconnect.addListener(stop);
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};
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var stop = function() {
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listenCallback = null;
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port.disconnect();
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port = null;
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flushCallbacks();
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};
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if ( typeof name === 'string' && name !== '' ) {
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start(name);
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}
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var ask = function(msg, callback) {
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if ( port === null ) {
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if ( typeof callback === 'function' ) {
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callback();
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}
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return;
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}
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if ( callback === undefined ) {
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tell(msg);
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return;
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}
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var id = requestId++;
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port.postMessage({ id: id, msg: msg });
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requestIdToCallbackMap[id] = callback;
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};
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var tell = function(msg) {
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if ( port !== null ) {
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port.postMessage({ id: 0, msg: msg });
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}
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};
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var listen = function(callback) {
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listenCallback = callback;
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};
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var flushCallbacks = function() {
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var callback;
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for ( var id in requestIdToCallbackMap ) {
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if ( requestIdToCallbackMap.hasOwnProperty(id) === false ) {
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continue;
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}
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callback = requestIdToCallbackMap[id];
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if ( !callback ) {
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continue;
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}
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// Must be removed before calling client to be sure to not execute
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// callback again if the client stops the messaging service.
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delete requestIdToCallbackMap[id];
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callback();
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}
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};
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return {
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start: start,
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stop: stop,
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ask: ask,
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tell: tell,
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listen: listen
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};
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})('element-picker.js');
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/******************************************************************************/
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/******************************************************************************/
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(function() {
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/******************************************************************************/
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var µBlockClassName = CSS.escape('µBlock');
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var svgns = 'http://www.w3.org/2000/svg';
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var pickerRoot = null;
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var svgRoot = null;
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var svgOcean = null;
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var svgIslands = null;
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var divDialog = null;
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var taCandidate = null;
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var urlNormalizer = null;
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var netFilterCandidates = [];
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var cosmeticFilterCandidates = [];
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var targetElements = [];
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var svgWidth = 0;
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var svgHeight = 0;
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/******************************************************************************/
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var pickerPaused = function() {
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return /(^| )paused( |$)/.test(pickerRoot.className);
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};
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/******************************************************************************/
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var pausePicker = function() {
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pickerRoot.className += ' paused';
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};
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/******************************************************************************/
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var unpausePicker = function() {
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pickerRoot.className = pickerRoot.className.replace(/(^| )paused( |$)/g, '').trim();
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};
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/******************************************************************************/
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var pickerRootDistance = function(elem) {
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var distance = 0;
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while ( elem ) {
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if ( elem === pickerRoot ) {
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return distance;
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}
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elem = elem.parentNode;
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distance += 1;
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}
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return -1;
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};
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/******************************************************************************/
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var highlightElements = function(elems, force) {
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// To make mouse move handler more efficient
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if ( !force && elems.length === targetElements.length ) {
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if ( elems.length === 0 || elems[0] === targetElements[0] ) {
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return;
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}
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}
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targetElements = elems;
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var offx = window.pageXOffset;
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var offy = window.pageYOffset;
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var ow = svgRoot.getAttribute('width');
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var ocean = [
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'M0 0',
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'h', ow,
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'v', svgRoot.getAttribute('height'),
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'h-', ow,
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'z'
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];
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var islands = [];
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var elem, r;
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for ( var i = 0; i < elems.length; i++ ) {
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elem = elems[i];
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if ( typeof elem.getBoundingClientRect !== 'function' ) {
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continue;
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}
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r = elem.getBoundingClientRect();
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ocean.push(
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'M', r.left + offx, ' ', r.top + offy,
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'h', r.width,
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'v', r.height,
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'h-', r.width,
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'z'
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);
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islands.push(
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'M', r.left + offx, ' ', r.top + offy,
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'h', r.width,
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'v', r.height,
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'h-', r.width,
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'z'
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);
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}
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svgOcean.setAttribute('d', ocean.join(''));
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svgIslands.setAttribute('d', islands.join(''));
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};
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/******************************************************************************/
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var removeElements = function(elems) {
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var i = elems.length, elem;
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while ( i-- ) {
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elem = elems[i];
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if ( elem.parentNode ) {
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elem.parentNode.removeChild(elem);
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}
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}
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};
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/******************************************************************************/
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// Extract the best possible net filter, i.e. as specific as possible.
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var netFilterFromElement = function(elem, out) {
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if ( elem === null ) {
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return;
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}
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if ( elem.nodeType !== 1 ) {
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return;
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}
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var tagName = elem.tagName.toLowerCase();
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if ( tagName !== 'img' && tagName !== 'iframe' ) {
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return;
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}
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var src = elem.getAttribute('src');
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if ( typeof src !== 'string' || src.length === 0 ) {
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return;
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}
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// Remove fragment
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var pos = src.indexOf('#');
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if ( pos !== -1 ) {
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src = src.slice(0, pos);
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}
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// Feed the attribute to a link element, then retrieve back: this
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// should normalize it.
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urlNormalizer.href = src;
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src = urlNormalizer.href;
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// Anchor absolute filter to hostname
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src = src.replace(/^https?:\/\//, '||');
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out.push(src);
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// Suggest a less narrow filter if possible
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pos = src.indexOf('?');
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if ( pos !== -1 ) {
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src = src.slice(0, pos);
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out.push(src);
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}
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};
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/******************************************************************************/
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// Extract the best possible cosmetic filter, i.e. as specific as possible.
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var cosmeticFilterFromElement = function(elem, out) {
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if ( elem === null ) {
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return;
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}
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if ( elem.nodeType !== 1 ) {
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return;
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}
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var tagName = elem.tagName.toLowerCase();
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var prefix = '';
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var suffix = [];
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var v;
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// Id
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v = typeof elem.id === 'string' && CSS.escape(elem.id);
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if ( v ) {
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suffix.push('#', v);
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}
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// Class(es)
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v = typeof elem.className === 'string' && elem.className.trim();
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if ( v.length ) {
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v = v.split(/\s+/);
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var i = v.length;
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while ( i-- ) {
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v[i] = CSS.escape(v[i]);
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}
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suffix.push('.', v.join('.'));
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}
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if ( suffix.length === 0 ) {
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prefix = tagName;
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}
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// Attributes (depends on tag name)
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var attributes = [], attr;
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switch ( tagName ) {
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case 'a':
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v = elem.getAttribute('href');
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if ( v ) {
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v = v.replace(/\?.*$/, '');
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}
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attributes.push({ k: 'href', v: v });
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break;
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case 'img':
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v = elem.getAttribute('alt');
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if ( v && v.length !== 0 ) {
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attributes.push({ k: 'alt', v: v });
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}
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break;
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default:
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break;
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}
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while ( attr = attributes.pop() ) {
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if ( attr.v.length === 0 ) {
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continue;
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}
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v = elem.getAttribute(attr.k);
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if ( attr.v === v ) {
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suffix.push('[', attr.k, '="', attr.v, '"]');
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} else if ( v.indexOf(attr.v) === 0 ) {
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suffix.push('[', attr.k, '^="', attr.v, '"]');
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||
} else {
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suffix.push('[', attr.k, '*="', attr.v, '"]');
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||
}
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}
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out.push('##' + prefix + suffix.join(''));
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};
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/******************************************************************************/
|
||
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var filtersFromElement = function(elem) {
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netFilterCandidates.length = 0;
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cosmeticFilterCandidates.length = 0;
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while ( elem && elem !== document.body ) {
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netFilterFromElement(elem, netFilterCandidates);
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cosmeticFilterFromElement(elem, cosmeticFilterCandidates);
|
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elem = elem.parentNode;
|
||
}
|
||
};
|
||
|
||
/******************************************************************************/
|
||
|
||
var elementsFromFilter = function(filter) {
|
||
var out = [];
|
||
|
||
// Cosmetic filters: these are straight CSS selectors
|
||
// TODO: This is still not working well for a[href], because there are
|
||
// many ways to compose a valid href to the same effective URL.
|
||
// One idea is to normalize all a[href] on the page, but for now I will
|
||
// wait and see, as I prefer to refrain from tampering with the page
|
||
// content if I can avoid it.
|
||
if ( filter.slice(0, 2) === '##' ) {
|
||
try {
|
||
out = document.querySelectorAll(filter.replace('##', ''));
|
||
}
|
||
catch (e) {
|
||
}
|
||
return out;
|
||
}
|
||
|
||
// Net filters: we need to lookup manually -- translating into a
|
||
// foolproof CSS selector is just not possible
|
||
if ( filter.slice(0, 2) === '||' ) {
|
||
filter = filter.replace('||', '');
|
||
}
|
||
var elems = document.querySelectorAll('[src]');
|
||
var i = elems.length;
|
||
var elem;
|
||
while ( i-- ) {
|
||
elem = elems[i];
|
||
if ( typeof elem.src !== 'string' ) {
|
||
continue;
|
||
}
|
||
if ( elem.src.indexOf(filter) !== -1 ) {
|
||
out.push(elem);
|
||
}
|
||
}
|
||
return out;
|
||
};
|
||
|
||
// https://www.youtube.com/watch?v=YI2XuIOW3gM
|
||
|
||
/******************************************************************************/
|
||
|
||
var userFilterFromCandidate = function() {
|
||
var v = taCandidate.value;
|
||
|
||
var elems = elementsFromFilter(v);
|
||
if ( elems.length === 0 ) {
|
||
return false;
|
||
}
|
||
|
||
// Cosmetic filter?
|
||
if ( v.slice(0, 2) === '##' ) {
|
||
return window.location.hostname + v;
|
||
}
|
||
|
||
// If domain included in filter, no need for domain option
|
||
if ( v.slice(0, 2) === '||' ) {
|
||
return v;
|
||
}
|
||
// Assume net filter
|
||
return v + '$domain=' + window.location.hostname;
|
||
};
|
||
|
||
/******************************************************************************/
|
||
|
||
var onCandidateChanged = function() {
|
||
var elems = elementsFromFilter(taCandidate.value);
|
||
divDialog.querySelector('#create').disabled = elems.length === 0;
|
||
highlightElements(elems);
|
||
};
|
||
|
||
/******************************************************************************/
|
||
|
||
var candidateFromFilterChoice = function(filterChoice) {
|
||
var slot = filterChoice.slot;
|
||
var filters = filterChoice.filters;
|
||
var filter = filters[slot];
|
||
|
||
if ( filter === undefined ) {
|
||
return '';
|
||
}
|
||
|
||
// For net filters there no such thing as a path
|
||
if ( filterChoice.type === 'net' || filterChoice.modifier ) {
|
||
return filter;
|
||
}
|
||
|
||
// Return path: the target element, then all siblings prepended
|
||
var selector = [];
|
||
for ( ; slot < filters.length; slot++ ) {
|
||
filter = filters[slot];
|
||
selector.unshift(filter.replace(/^##/, ''));
|
||
// Stop at any element with an id: these are unique in a web page
|
||
if ( filter.slice(0, 3) === '###' ) {
|
||
break;
|
||
}
|
||
}
|
||
return '##' + selector.join(' > ');
|
||
};
|
||
|
||
/******************************************************************************/
|
||
|
||
var filterChoiceFromEvent = function(ev) {
|
||
var li = ev.target;
|
||
var isNetFilter = li.textContent.slice(0, 2) !== '##';
|
||
var r = {
|
||
type: isNetFilter ? 'net' : 'cosmetic',
|
||
filters: isNetFilter ? netFilterCandidates : cosmeticFilterCandidates,
|
||
slot: 0,
|
||
modifier: ev.ctrlKey || ev.metaKey
|
||
};
|
||
while ( li.previousSibling !== null ) {
|
||
li = li.previousSibling;
|
||
r.slot += 1;
|
||
}
|
||
return r;
|
||
};
|
||
|
||
/******************************************************************************/
|
||
|
||
var onDialogClicked = function(ev) {
|
||
if ( ev.target === null ) {
|
||
/* do nothing */
|
||
}
|
||
|
||
else if ( ev.target.id === 'create' ) {
|
||
var filter = userFilterFromCandidate();
|
||
if ( filter ) {
|
||
messaging.tell({ what: 'createUserFilter', filters: filter });
|
||
removeElements(elementsFromFilter(taCandidate.value));
|
||
stopPicker();
|
||
}
|
||
}
|
||
|
||
else if ( ev.target.id === 'pick' ) {
|
||
unpausePicker();
|
||
}
|
||
|
||
else if ( ev.target.id === 'quit' ) {
|
||
stopPicker();
|
||
}
|
||
|
||
else if ( ev.target.tagName.toLowerCase() === 'li' && pickerRootDistance(ev.target) === 5 ) {
|
||
taCandidate.value = candidateFromFilterChoice(filterChoiceFromEvent(ev));
|
||
onCandidateChanged();
|
||
}
|
||
|
||
ev.stopPropagation();
|
||
ev.preventDefault();
|
||
};
|
||
|
||
/******************************************************************************/
|
||
|
||
var removeAllChildren = function(parent) {
|
||
while ( parent.firstChild ) {
|
||
parent.removeChild(parent.firstChild);
|
||
}
|
||
};
|
||
|
||
/******************************************************************************/
|
||
|
||
// TODO: for convenience I could provide a small set of net filters instead
|
||
// of just a single one. Truncating the right-most part of the path etc.
|
||
|
||
var showDialog = function(options) {
|
||
pausePicker();
|
||
|
||
options = options || {};
|
||
|
||
// Create lists of candidate filters
|
||
var populate = function(src, des) {
|
||
var root = divDialog.querySelector(des);
|
||
var ul = root.querySelector('ul');
|
||
removeAllChildren(ul);
|
||
var li;
|
||
for ( var i = 0; i < src.length; i++ ) {
|
||
li = document.createElement('li');
|
||
li.textContent = src[i];
|
||
ul.appendChild(li);
|
||
}
|
||
root.style.display = src.length !== 0 ? '' : 'none';
|
||
};
|
||
|
||
populate(netFilterCandidates, 'ul > li:nth-of-type(1)');
|
||
populate(cosmeticFilterCandidates, 'ul > li:nth-of-type(2)');
|
||
|
||
divDialog.querySelector('ul').style.display = netFilterCandidates.length || cosmeticFilterCandidates.length ? '' : 'none';
|
||
divDialog.querySelector('#create').disabled = true;
|
||
|
||
// Auto-select a candidate filter
|
||
var filterChoice = {
|
||
type: '',
|
||
filters: [],
|
||
slot: 0,
|
||
modifier: options.modifier || false
|
||
};
|
||
if ( netFilterCandidates.length ) {
|
||
filterChoice.type = 'net';
|
||
filterChoice.filters = netFilterCandidates;
|
||
} else if ( cosmeticFilterCandidates.length ) {
|
||
filterChoice.type = 'cosmetic';
|
||
filterChoice.filters = cosmeticFilterCandidates;
|
||
}
|
||
|
||
taCandidate.value = '';
|
||
if ( filterChoice.type !== '' ) {
|
||
taCandidate.value = candidateFromFilterChoice(filterChoice);
|
||
onCandidateChanged();
|
||
}
|
||
};
|
||
|
||
/******************************************************************************/
|
||
|
||
var elementFromPoint = function(x, y) {
|
||
svgRoot.style.pointerEvents = 'none';
|
||
var elem = document.elementFromPoint(x, y);
|
||
if ( elem === document.body || elem === document.documentElement ) {
|
||
elem = null;
|
||
}
|
||
svgRoot.style.pointerEvents = 'auto';
|
||
return elem;
|
||
};
|
||
|
||
/******************************************************************************/
|
||
|
||
var onSvgHovered = function(ev) {
|
||
if ( pickerPaused() ) {
|
||
return;
|
||
}
|
||
var elem = elementFromPoint(ev.clientX, ev.clientY);
|
||
highlightElements(elem ? [elem] : []);
|
||
};
|
||
|
||
/******************************************************************************/
|
||
|
||
var onSvgClicked = function(ev) {
|
||
if ( pickerPaused() ) {
|
||
return;
|
||
}
|
||
var elem = elementFromPoint(ev.clientX, ev.clientY);
|
||
if ( elem === null ) {
|
||
return;
|
||
}
|
||
filtersFromElement(elem);
|
||
showDialog();
|
||
};
|
||
|
||
/******************************************************************************/
|
||
|
||
var onKeyPressed = function(ev) {
|
||
if ( ev.key === 27 || ev.keyCode === 27 ) {
|
||
ev.stopPropagation();
|
||
ev.preventDefault();
|
||
stopPicker();
|
||
}
|
||
};
|
||
|
||
/******************************************************************************/
|
||
|
||
// https://github.com/gorhill/uBlock/issues/190
|
||
// May need to dynamically adjust the height of the overlay + new position
|
||
// of highlighted elements.
|
||
|
||
var onScrolled = function() {
|
||
var newHeight = this.scrollY + this.innerHeight;
|
||
if ( newHeight > svgHeight ) {
|
||
svgHeight = newHeight;
|
||
svgRoot.setAttribute('height', svgHeight);
|
||
svgRoot.setAttribute("viewBox", '0 0 ' + svgWidth + ' ' + svgHeight);
|
||
}
|
||
highlightElements(targetElements, true);
|
||
};
|
||
|
||
/******************************************************************************/
|
||
|
||
// Let's have the element picker code flushed from memory when no longer
|
||
// in use: to ensure this, release all local references.
|
||
|
||
var stopPicker = function() {
|
||
if ( pickerRoot !== null ) {
|
||
document.removeEventListener('keydown', onKeyPressed);
|
||
window.removeEventListener('scroll', onScrolled);
|
||
taCandidate.removeEventListener('input', onCandidateChanged);
|
||
divDialog.removeEventListener('click', onDialogClicked);
|
||
svgRoot.removeEventListener('mousemove', onSvgHovered);
|
||
svgRoot.removeEventListener('click', onSvgClicked);
|
||
document.body.removeChild(pickerRoot);
|
||
pickerRoot =
|
||
divDialog =
|
||
svgRoot = svgOcean = svgIslands =
|
||
taCandidate =
|
||
urlNormalizer = null;
|
||
messaging.stop();
|
||
}
|
||
targetElements = [];
|
||
};
|
||
|
||
/******************************************************************************/
|
||
|
||
var startPicker = function() {
|
||
pickerRoot = document.querySelector('.' + µBlockClassName);
|
||
if ( pickerRoot !== null ) {
|
||
return;
|
||
}
|
||
pickerRoot = document.createElement('div');
|
||
pickerRoot.className = µBlockClassName;
|
||
|
||
var pickerStyle = document.createElement('style');
|
||
pickerStyle.setAttribute('scoped', '');
|
||
pickerStyle.textContent = [
|
||
'.µBlock {',
|
||
'position: absolute;',
|
||
'top: 0;',
|
||
'left: 0;',
|
||
'}',
|
||
'.µBlock, .µBlock * {',
|
||
'background: transparent;',
|
||
'border: 0;',
|
||
'color: #000;',
|
||
'font: 12px sans-serif;',
|
||
'margin: 0;',
|
||
'max-width: none;',
|
||
'outline: 0;',
|
||
'overflow: visible;',
|
||
'padding: 0;',
|
||
'text-transform: none;',
|
||
'vertical-align: baseline;',
|
||
'}',
|
||
'.µBlock button {',
|
||
'border: 1px solid #aaa;',
|
||
'padding: 6px 8px 4px 8px;',
|
||
'box-sizing: border-box;',
|
||
'box-shadow: none;',
|
||
'border-radius: 3px;',
|
||
'display: inline;',
|
||
'line-height: 1;',
|
||
'color: #444;',
|
||
'background-color: #ccc;',
|
||
'cursor: pointer;',
|
||
'}',
|
||
'.µBlock button:hover {',
|
||
'background-color: #eee;',
|
||
'}',
|
||
'.µBlock button:disabled {',
|
||
'color: #999;',
|
||
'background-color: #ccc;',
|
||
'}',
|
||
'.µBlock button#create:not(:disabled) {',
|
||
'background-color: #ffdca8;',
|
||
'}',
|
||
'.µBlock > svg {',
|
||
'position: absolute;',
|
||
'top: 0;',
|
||
'left: 0;',
|
||
'pointer-events: auto;',
|
||
'cursor: crosshair;',
|
||
'z-index: 4999999999;',
|
||
'}',
|
||
'.µBlock.paused > svg {',
|
||
'cursor: wait;',
|
||
'}',
|
||
'.µBlock > svg > path:first-child {',
|
||
'fill: rgba(0,0,0,0.75);',
|
||
'fill-rule: evenodd;',
|
||
'}',
|
||
'.µBlock > svg > path + path {',
|
||
'stroke: #F00;',
|
||
'stroke-width: 0.5px;',
|
||
'fill: rgba(255,0,0,0.25);',
|
||
'}',
|
||
'.µBlock > div {',
|
||
'padding: 4px;',
|
||
'display: none;',
|
||
'position: fixed;',
|
||
'right: 4px;',
|
||
'bottom: 4px;',
|
||
'width: 30em;',
|
||
'font: 12px sans-serif;',
|
||
'background-color: rgba(255,255,255,0.9);',
|
||
'z-index: 5999999999;',
|
||
'}',
|
||
'.µBlock.paused > div {',
|
||
'display: initial;',
|
||
'}',
|
||
'.µBlock > div > div {',
|
||
'padding: 0;',
|
||
'box-sizing: border-box;',
|
||
'width: 100%;',
|
||
'height: 8em;',
|
||
'position: relative;',
|
||
'}',
|
||
'.µBlock > div > div > textarea {',
|
||
'border: 1px solid #ccc;',
|
||
'padding: 2px;',
|
||
'box-sizing: border-box;',
|
||
'width: 100%;',
|
||
'height: 100%;',
|
||
'overflow: hidden;',
|
||
'resize: none;',
|
||
'background-color: white;',
|
||
'font: 11px monospace;',
|
||
'}',
|
||
'.µBlock > div > div > div {',
|
||
'position: absolute;',
|
||
'right: 2px;',
|
||
'bottom: 2px;',
|
||
'opacity: 0.2;',
|
||
'}',
|
||
'.µBlock > div > div > div:hover {',
|
||
'opacity: 1;',
|
||
'}',
|
||
'.µBlock > div > div > div > * {',
|
||
'margin-left: 3px;',
|
||
'}',
|
||
'.µBlock > div > ul {',
|
||
'margin: 0;',
|
||
'border: 1px solid #ccc;',
|
||
'padding: 3px;',
|
||
'list-style-type: none;',
|
||
'text-align: left;',
|
||
'overflow: hidden;',
|
||
'}',
|
||
'.µBlock > div > ul > li:not(:first-child) {',
|
||
'margin-top: 0.5em;',
|
||
'}',
|
||
'.µBlock > div > ul > li > span:nth-of-type(1) {',
|
||
'font-weight: bold;',
|
||
'}',
|
||
'.µBlock > div > ul > li > span:nth-of-type(2) {',
|
||
'margin: 0 0 0 1em;',
|
||
'font-size: smaller;',
|
||
'color: gray;',
|
||
'}',
|
||
'.µBlock > div > ul > li > ul {',
|
||
'margin: 0 0 0 1em;',
|
||
'list-style-type: none;',
|
||
'text-align: left;',
|
||
'background-color: #eee;',
|
||
'overflow: hidden;',
|
||
'}',
|
||
'.µBlock > div > ul > li > ul > li {',
|
||
'font: 11px monospace;',
|
||
'white-space: nowrap;',
|
||
'cursor: pointer;',
|
||
'}',
|
||
'.µBlock > div > ul > li > ul > li:hover {',
|
||
'background-color: rgba(255,255,255,1.0);',
|
||
'}',
|
||
''
|
||
].join('\n');
|
||
pickerRoot.appendChild(pickerStyle);
|
||
|
||
svgRoot = document.createElementNS(svgns, 'svg');
|
||
svgRoot.innerHTML = '<path /><path />';
|
||
svgWidth = document.documentElement.scrollWidth;
|
||
svgHeight = Math.max(
|
||
document.documentElement.scrollHeight,
|
||
window.scrollY + window.innerHeight
|
||
);
|
||
svgRoot.setAttribute('x', 0);
|
||
svgRoot.setAttribute('y', 0);
|
||
svgRoot.setAttribute('width', svgWidth);
|
||
svgRoot.setAttribute('height', svgHeight);
|
||
svgRoot.setAttribute("viewBox", '0 0 ' + svgWidth + ' ' + svgHeight);
|
||
svgOcean = svgRoot.querySelector('path:first-child');
|
||
svgIslands = svgRoot.querySelector('path + path');
|
||
pickerRoot.appendChild(svgRoot);
|
||
|
||
// TODO: do not rely on element ids, they could collide with whatever
|
||
// is used in the page. Just use built-in hierarchy of elements as
|
||
// selectors.
|
||
|
||
divDialog = document.createElement('div');
|
||
divDialog.innerHTML = [
|
||
'<div>',
|
||
'<textarea spellcheck="false"></textarea>',
|
||
'<div>',
|
||
'<button id="create" type="button" disabled>.</button>',
|
||
'<button id="pick" type="button">.</button>',
|
||
'<button id="quit" type="button">.</button>',
|
||
'</div>',
|
||
'</div>',
|
||
'<ul>',
|
||
'<li><span>.</span><ul></ul>',
|
||
'<li><span>.</span><span>.</span><ul></ul>',
|
||
'</ul>',
|
||
''
|
||
].join('');
|
||
pickerRoot.appendChild(divDialog);
|
||
|
||
document.body.appendChild(pickerRoot);
|
||
svgRoot.addEventListener('click', onSvgClicked);
|
||
svgRoot.addEventListener('mousemove', onSvgHovered);
|
||
divDialog.addEventListener('click', onDialogClicked);
|
||
taCandidate = divDialog.querySelector('textarea');
|
||
taCandidate.addEventListener('input', onCandidateChanged);
|
||
urlNormalizer = document.createElement('a');
|
||
window.addEventListener('scroll', onScrolled);
|
||
document.addEventListener('keydown', onKeyPressed);
|
||
};
|
||
|
||
/******************************************************************************/
|
||
|
||
startPicker();
|
||
|
||
/******************************************************************************/
|
||
|
||
messaging.ask({ what: 'elementPickerArguments' }, function(details) {
|
||
var i18nMap = {
|
||
'#create': 'create',
|
||
'#pick': 'pick',
|
||
'#quit': 'quit',
|
||
'ul > li:nth-of-type(1) > span:nth-of-type(1)': 'netFilters',
|
||
'ul > li:nth-of-type(2) > span:nth-of-type(1)': 'cosmeticFilters',
|
||
'ul > li:nth-of-type(2) > span:nth-of-type(2)': 'cosmeticFiltersHint'
|
||
|
||
};
|
||
for ( var k in i18nMap ) {
|
||
if ( i18nMap.hasOwnProperty(k) === false ) {
|
||
continue;
|
||
}
|
||
divDialog.querySelector(k).firstChild.nodeValue = details.i18n[i18nMap[k]];
|
||
}
|
||
|
||
// Auto-select a specific target, if any, and if possible
|
||
var elem;
|
||
|
||
// Try using mouse position
|
||
if ( details.clientX !== -1 ) {
|
||
elem = elementFromPoint(details.clientX, details.clientY);
|
||
filtersFromElement(elem);
|
||
showDialog();
|
||
return;
|
||
}
|
||
|
||
// No mouse position available, use suggested target
|
||
var target = details.target || '';
|
||
var pos = target.indexOf('\t');
|
||
if ( pos === -1 ) {
|
||
return;
|
||
}
|
||
var srcAttrMap = {
|
||
'a': 'href',
|
||
'img': 'src',
|
||
'iframe': 'src',
|
||
'video': 'src',
|
||
'audio': 'src'
|
||
};
|
||
var tagName = target.slice(0, pos);
|
||
var url = target.slice(pos + 1);
|
||
var attr = srcAttrMap[tagName];
|
||
if ( attr === undefined ) {
|
||
return;
|
||
}
|
||
var elems = document.querySelectorAll(tagName + '[' + attr + ']');
|
||
var i = elems.length;
|
||
var src;
|
||
while ( i-- ) {
|
||
elem = elems[i];
|
||
src = elem[attr];
|
||
if ( typeof src !== 'string' || src === '' ) {
|
||
continue;
|
||
}
|
||
if ( src !== url ) {
|
||
continue;
|
||
}
|
||
filtersFromElement(elem);
|
||
showDialog({ modifier: true });
|
||
return;
|
||
}
|
||
});
|
||
|
||
/******************************************************************************/
|
||
|
||
})();
|