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/* 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";
const { Cc, Ci } = require('chrome'),
{ setTimeout } = require("../timer"),
{ Trait } = require('../traits'),
WM = Cc['@mozilla.org/appshell/window-mediator;1'].
getService(Ci.nsIWindowMediator),
URI_BROWSER = 'chrome://browser/content/browser.xul',
NAME = '_blank',
FEATURES = 'chrome,all,dialog=no',
PARAMS = [ URI_BROWSER, NAME, FEATURES ],
ON_LOAD = 'load',
ON_UNLOAD = 'unload',
STATE_LOADED = 'complete',
BROWSER = 'navigator:browser';
/**
* Trait provides private `_window` property and requires `_onLoad` property
* that will be called when `_window` is loaded. If `_window` property value
* is changed with already loaded window `_onLoad` still will be called.
*/
const WindowLoader = Trait.compose({
/**
* Internal listener that is called when window is loaded.
* Please keep in mind that this trait will not handle exceptions that may
* be thrown by this method so method itself should take care of
* handling them.
* @param {nsIWindow} window
*/
_onLoad: Trait.required,
_tabOptions: Trait.required,
/**
* Internal listener that is called when `_window`'s DOM 'unload' event
* is dispatched. Please note that this trait will not handle exceptions that
* may be thrown by this method so method itself should take care of
* handling them.
*/
_onUnload: Trait.required,
_load: function _load() {
if (this.__window) return;
let params = PARAMS.slice()
params.push(this._tabOptions.map(function(options) options.url).join("|"))
let browser = WM.getMostRecentWindow(BROWSER);
this._window = browser.openDialog.apply(browser, params);
},
/**
* Private window who's load event is being tracked. Once window is loaded
* `_onLoad` is called.
* @type {nsIWindow}
*/
get _window() this.__window,
set _window(window) {
let _window = this.__window;
if (!window) window = null;
if (window !== _window) {
if (_window) {
_window.removeEventListener(ON_UNLOAD, this.__unloadListener, false);
_window.removeEventListener(ON_LOAD, this.__loadListener, false);
}
if (window) {
window.addEventListener(
ON_UNLOAD,
this.__unloadListener ||
(this.__unloadListener = this._unloadListener.bind(this))
,
false
);
this.__window = window;
// If window is not loaded yet setting up a listener.
if (STATE_LOADED != window.document.readyState) {
window.addEventListener(
ON_LOAD,
this.__loadListener ||
(this.__loadListener = this._loadListener.bind(this))
,
false
);
}
else { // If window is loaded calling listener next turn of event loop.
this._onLoad(window)
}
}
}
},
__window: null,
/**
* Internal method used for listening 'load' event on the `_window`.
* Method takes care of removing itself from 'load' event listeners once
* event is being handled.
*/
_loadListener: function _loadListener(event) {
let window = this._window;
if (!event.target || event.target.defaultView != window) return;
window.removeEventListener(ON_LOAD, this.__loadListener, false);
this._onLoad(window);
},
__loadListener: null,
/**
* Internal method used for listening 'unload' event on the `_window`.
* Method takes care of removing itself from 'unload' event listeners once
* event is being handled.
*/
_unloadListener: function _unloadListener(event) {
let window = this._window;
if (!event.target
|| event.target.defaultView != window
|| STATE_LOADED != window.document.readyState
) return;
window.removeEventListener(ON_UNLOAD, this.__unloadListener, false);
this._onUnload(window);
},
__unloadListener: null
});
exports.WindowLoader = WindowLoader;
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