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142 lines
3.7 KiB
JavaScript
142 lines
3.7 KiB
JavaScript
/* vim:set ts=2 sw=2 sts=2 et tw=80:
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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"use strict";
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var EXPORTED_SYMBOLS = ["ScratchpadManager"];
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const Cc = Components.classes;
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const Ci = Components.interfaces;
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const Cu = Components.utils;
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const SCRATCHPAD_WINDOW_URL = "chrome://browser/content/scratchpad.xul";
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const SCRATCHPAD_WINDOW_FEATURES = "chrome,titlebar,toolbar,centerscreen,resizable,dialog=no";
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Cu.import("resource://gre/modules/Services.jsm");
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/**
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* The ScratchpadManager object opens new Scratchpad windows and manages the state
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* of open scratchpads for session restore. There's only one ScratchpadManager in
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* the life of the browser.
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*/
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var ScratchpadManager = {
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_scratchpads: [],
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/**
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* Get the saved states of open scratchpad windows. Called by
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* session restore.
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*
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* @return array
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* The array of scratchpad states.
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*/
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getSessionState: function SPM_getSessionState()
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{
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return this._scratchpads;
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},
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/**
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* Restore scratchpad windows from the scratchpad session store file.
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* Called by session restore.
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*
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* @param function aSession
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* The session object with scratchpad states.
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*
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* @return array
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* The restored scratchpad windows.
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*/
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restoreSession: function SPM_restoreSession(aSession)
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{
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if (!Array.isArray(aSession)) {
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return [];
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}
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let wins = [];
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aSession.forEach(function(state) {
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let win = this.openScratchpad(state);
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wins.push(win);
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}, this);
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return wins;
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},
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/**
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* Iterate through open scratchpad windows and save their states.
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*/
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saveOpenWindows: function SPM_saveOpenWindows() {
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this._scratchpads = [];
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let enumerator = Services.wm.getEnumerator("devtools:scratchpad");
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while (enumerator.hasMoreElements()) {
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let win = enumerator.getNext();
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if (!win.closed && win.Scratchpad.initialized) {
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this._scratchpads.push(win.Scratchpad.getState());
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}
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}
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},
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/**
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* Open a new scratchpad window with an optional initial state.
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*
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* @param object aState
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* Optional. The initial state of the scratchpad, an object
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* with properties filename, text, and executionContext.
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*
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* @return nsIDomWindow
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* The opened scratchpad window.
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*/
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openScratchpad: function SPM_openScratchpad(aState)
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{
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let params = null;
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if (aState) {
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if (typeof aState != 'object') {
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return;
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}
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params = Cc["@mozilla.org/embedcomp/dialogparam;1"]
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.createInstance(Ci.nsIDialogParamBlock);
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params.SetNumberStrings(1);
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params.SetString(0, JSON.stringify(aState));
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}
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let win = Services.ww.openWindow(null, SCRATCHPAD_WINDOW_URL, "_blank",
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SCRATCHPAD_WINDOW_FEATURES, params);
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// Only add the shutdown observer if we've opened a scratchpad window.
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ShutdownObserver.init();
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return win;
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}
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};
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/**
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* The ShutdownObserver listens for app shutdown and saves the current state
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* of the scratchpads for session restore.
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*/
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var ShutdownObserver = {
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_initialized: false,
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init: function SDO_init()
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{
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if (this._initialized) {
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return;
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}
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Services.obs.addObserver(this, "quit-application-granted", false);
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this._initialized = true;
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},
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observe: function SDO_observe(aMessage, aTopic, aData)
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{
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if (aTopic == "quit-application-granted") {
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ScratchpadManager.saveOpenWindows();
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this.uninit();
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}
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},
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uninit: function SDO_uninit()
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{
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Services.obs.removeObserver(this, "quit-application-granted");
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}
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};
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