274 lines
9.1 KiB
JavaScript
274 lines
9.1 KiB
JavaScript
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
"use strict";
|
|
|
|
module.metadata = {
|
|
"stability": "stable"
|
|
};
|
|
|
|
const observers = require('./deprecated/observer-service');
|
|
const { Loader, validationAttributes } = require('./content/loader');
|
|
const { Worker } = require('./content/worker');
|
|
const { Registry } = require('./util/registry');
|
|
const { EventEmitter } = require('./deprecated/events');
|
|
const { on, emit } = require('./event/core');
|
|
const { validateOptions : validate } = require('./deprecated/api-utils');
|
|
const { Cc, Ci } = require('chrome');
|
|
const { merge } = require('./util/object');
|
|
const { readURISync } = require('./net/url');
|
|
const { windowIterator } = require('./deprecated/window-utils');
|
|
const { isBrowser, getFrames } = require('./window/utils');
|
|
const { getTabs, getTabContentWindow, getTabForContentWindow,
|
|
getURI: getTabURI } = require('./tabs/utils');
|
|
const { ignoreWindow } = require('sdk/private-browsing/utils');
|
|
const { Style } = require("./stylesheet/style");
|
|
const { attach, detach } = require("./content/mod");
|
|
const { has, hasAny } = require("./util/array");
|
|
const { Rules } = require("./util/rules");
|
|
|
|
// Valid values for `attachTo` option
|
|
const VALID_ATTACHTO_OPTIONS = ['existing', 'top', 'frame'];
|
|
|
|
const mods = new WeakMap();
|
|
|
|
// contentStyle* / contentScript* are sharing the same validation constraints,
|
|
// so they can be mostly reused, except for the messages.
|
|
const validStyleOptions = {
|
|
contentStyle: merge(Object.create(validationAttributes.contentScript), {
|
|
msg: 'The `contentStyle` option must be a string or an array of strings.'
|
|
}),
|
|
contentStyleFile: merge(Object.create(validationAttributes.contentScriptFile), {
|
|
msg: 'The `contentStyleFile` option must be a local URL or an array of URLs'
|
|
})
|
|
};
|
|
|
|
/**
|
|
* PageMod constructor (exported below).
|
|
* @constructor
|
|
*/
|
|
const PageMod = Loader.compose(EventEmitter, {
|
|
on: EventEmitter.required,
|
|
_listeners: EventEmitter.required,
|
|
attachTo: [],
|
|
contentScript: Loader.required,
|
|
contentScriptFile: Loader.required,
|
|
contentScriptWhen: Loader.required,
|
|
contentScriptOptions: Loader.required,
|
|
include: null,
|
|
constructor: function PageMod(options) {
|
|
this._onContent = this._onContent.bind(this);
|
|
options = options || {};
|
|
|
|
let { contentStyle, contentStyleFile } = validate(options, validStyleOptions);
|
|
|
|
if ('contentScript' in options)
|
|
this.contentScript = options.contentScript;
|
|
if ('contentScriptFile' in options)
|
|
this.contentScriptFile = options.contentScriptFile;
|
|
if ('contentScriptOptions' in options)
|
|
this.contentScriptOptions = options.contentScriptOptions;
|
|
if ('contentScriptWhen' in options)
|
|
this.contentScriptWhen = options.contentScriptWhen;
|
|
if ('onAttach' in options)
|
|
this.on('attach', options.onAttach);
|
|
if ('onError' in options)
|
|
this.on('error', options.onError);
|
|
if ('attachTo' in options) {
|
|
if (typeof options.attachTo == 'string')
|
|
this.attachTo = [options.attachTo];
|
|
else if (Array.isArray(options.attachTo))
|
|
this.attachTo = options.attachTo;
|
|
else
|
|
throw new Error('The `attachTo` option must be a string or an array ' +
|
|
'of strings.');
|
|
|
|
let isValidAttachToItem = function isValidAttachToItem(item) {
|
|
return typeof item === 'string' &&
|
|
VALID_ATTACHTO_OPTIONS.indexOf(item) !== -1;
|
|
}
|
|
if (!this.attachTo.every(isValidAttachToItem))
|
|
throw new Error('The `attachTo` option valid accept only following ' +
|
|
'values: '+ VALID_ATTACHTO_OPTIONS.join(', '));
|
|
if (!hasAny(this.attachTo, ["top", "frame"]))
|
|
throw new Error('The `attachTo` option must always contain at least' +
|
|
' `top` or `frame` value');
|
|
}
|
|
else {
|
|
this.attachTo = ["top", "frame"];
|
|
}
|
|
|
|
let include = options.include;
|
|
let rules = this.include = Rules();
|
|
|
|
if (!include)
|
|
throw new Error('The `include` option must always contain atleast one rule');
|
|
|
|
rules.add.apply(rules, [].concat(include));
|
|
|
|
if (contentStyle || contentStyleFile) {
|
|
this._style = Style({
|
|
uri: contentStyleFile,
|
|
source: contentStyle
|
|
});
|
|
}
|
|
|
|
this.on('error', this._onUncaughtError = this._onUncaughtError.bind(this));
|
|
pageModManager.add(this._public);
|
|
mods.set(this._public, this);
|
|
|
|
// `_applyOnExistingDocuments` has to be called after `pageModManager.add()`
|
|
// otherwise its calls to `_onContent` method won't do anything.
|
|
if ('attachTo' in options && has(options.attachTo, 'existing'))
|
|
this._applyOnExistingDocuments();
|
|
},
|
|
|
|
destroy: function destroy() {
|
|
if (this._style)
|
|
detach(this._style);
|
|
|
|
for (let i in this.include)
|
|
this.include.remove(this.include[i]);
|
|
|
|
mods.delete(this._public);
|
|
pageModManager.remove(this._public);
|
|
},
|
|
|
|
_applyOnExistingDocuments: function _applyOnExistingDocuments() {
|
|
let mod = this;
|
|
// Returns true if the tab match one rule
|
|
let tabs = getAllTabs().filter(function (tab) {
|
|
return mod.include.matchesAny(getTabURI(tab));
|
|
});
|
|
|
|
tabs.forEach(function (tab) {
|
|
// Fake a newly created document
|
|
let window = getTabContentWindow(tab);
|
|
if (has(mod.attachTo, "top"))
|
|
mod._onContent(window);
|
|
if (has(mod.attachTo, "frame"))
|
|
getFrames(window).forEach(mod._onContent);
|
|
});
|
|
},
|
|
|
|
_onContent: function _onContent(window) {
|
|
// not registered yet
|
|
if (!pageModManager.has(this))
|
|
return;
|
|
|
|
let isTopDocument = window.top === window;
|
|
// Is a top level document and `top` is not set, ignore
|
|
if (isTopDocument && !has(this.attachTo, "top"))
|
|
return;
|
|
// Is a frame document and `frame` is not set, ignore
|
|
if (!isTopDocument && !has(this.attachTo, "frame"))
|
|
return;
|
|
|
|
if (this._style)
|
|
attach(this._style, window);
|
|
|
|
// Immediatly evaluate content script if the document state is already
|
|
// matching contentScriptWhen expectations
|
|
let state = window.document.readyState;
|
|
if ('start' === this.contentScriptWhen ||
|
|
// Is `load` event already dispatched?
|
|
'complete' === state ||
|
|
// Is DOMContentLoaded already dispatched and waiting for it?
|
|
('ready' === this.contentScriptWhen && state === 'interactive') ) {
|
|
this._createWorker(window);
|
|
return;
|
|
}
|
|
|
|
let eventName = 'end' == this.contentScriptWhen ? 'load' : 'DOMContentLoaded';
|
|
let self = this;
|
|
window.addEventListener(eventName, function onReady(event) {
|
|
if (event.target.defaultView != window)
|
|
return;
|
|
window.removeEventListener(eventName, onReady, true);
|
|
|
|
self._createWorker(window);
|
|
}, true);
|
|
},
|
|
_createWorker: function _createWorker(window) {
|
|
let worker = Worker({
|
|
window: window,
|
|
contentScript: this.contentScript,
|
|
contentScriptFile: this.contentScriptFile,
|
|
contentScriptOptions: this.contentScriptOptions,
|
|
onError: this._onUncaughtError
|
|
});
|
|
this._emit('attach', worker);
|
|
let self = this;
|
|
worker.once('detach', function detach() {
|
|
worker.destroy();
|
|
});
|
|
},
|
|
_onUncaughtError: function _onUncaughtError(e) {
|
|
if (this._listeners('error').length == 1)
|
|
console.exception(e);
|
|
}
|
|
});
|
|
exports.PageMod = function(options) PageMod(options)
|
|
exports.PageMod.prototype = PageMod.prototype;
|
|
|
|
const PageModManager = Registry.resolve({
|
|
constructor: '_init',
|
|
_destructor: '_registryDestructor'
|
|
}).compose({
|
|
constructor: function PageModRegistry(constructor) {
|
|
this._init(PageMod);
|
|
observers.add(
|
|
'document-element-inserted',
|
|
this._onContentWindow = this._onContentWindow.bind(this)
|
|
);
|
|
},
|
|
_destructor: function _destructor() {
|
|
observers.remove('document-element-inserted', this._onContentWindow);
|
|
this._removeAllListeners();
|
|
|
|
// We need to do some cleaning er PageMods, like unregistering any
|
|
// `contentStyle*`
|
|
this._registry.forEach(function(pageMod) {
|
|
pageMod.destroy();
|
|
});
|
|
|
|
this._registryDestructor();
|
|
},
|
|
_onContentWindow: function _onContentWindow(document) {
|
|
let window = document.defaultView;
|
|
// XML documents don't have windows, and we don't yet support them.
|
|
if (!window)
|
|
return;
|
|
// We apply only on documents in tabs of Firefox
|
|
if (!getTabForContentWindow(window))
|
|
return;
|
|
|
|
// When the tab is private, only addons with 'private-browsing' flag in
|
|
// their package.json can apply content script to private documents
|
|
if (ignoreWindow(window)) {
|
|
return;
|
|
}
|
|
|
|
this._registry.forEach(function(mod) {
|
|
if (mod.include.matchesAny(document.URL))
|
|
mods.get(mod)._onContent(window);
|
|
});
|
|
},
|
|
off: function off(topic, listener) {
|
|
this.removeListener(topic, listener);
|
|
}
|
|
});
|
|
const pageModManager = PageModManager();
|
|
|
|
// Returns all tabs on all currently opened windows
|
|
function getAllTabs() {
|
|
let tabs = [];
|
|
// Iterate over all chrome windows
|
|
for (let window in windowIterator()) {
|
|
if (!isBrowser(window))
|
|
continue;
|
|
tabs = tabs.concat(getTabs(window));
|
|
}
|
|
return tabs;
|
|
}
|