gecko/mobile/components/WebappsSupport.js

126 lines
4.1 KiB
JavaScript

/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Mozilla Mobile Browser.
*
* The Initial Developer of the Original Code is Mozilla Foundation.
* Portions created by the Initial Developer are Copyright (C) 2011
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Fabrice Desré <fabrice@mozilla.com>
* Mark Finkle <mfinkle@mozilla.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
const Cu = Components.utils;
const Cc = Components.classes;
const Ci = Components.interfaces;
Cu.import("resource://gre/modules/XPCOMUtils.jsm");
Cu.import("resource://gre/modules/Services.jsm");
const DB_VERSION = 1;
function WebappsSupport() {
this.init();
}
WebappsSupport.prototype = {
db: null,
init: function() {
let file = Cc["@mozilla.org/file/directory_service;1"].getService(Ci.nsIProperties).get("ProfD", Ci.nsIFile);
file.append("webapps.sqlite");
this.db = Services.storage.openDatabase(file);
let version = this.db.schemaVersion;
if (version == 0) {
this.db.executeSimpleSQL("CREATE TABLE webapps (title TEXT, uri TEXT PRIMARY KEY, icon TEXT)");
this.db.schemaVersion = DB_VERSION;
}
XPCOMUtils.defineLazyGetter(this, "_installQuery", function() {
return this.db.createAsyncStatement("INSERT INTO webapps (title, uri, icon) VALUES(:title, :uri, :icon)");
});
XPCOMUtils.defineLazyGetter(this, "_findQuery", function() {
return this.db.createStatement("SELECT uri FROM webapps where uri = :uri");
});
Services.obs.addObserver(this, "quit-application-granted", false);
},
// entry point
installApplication: function(aTitle, aURI, aIconURI, aIconData) {
let stmt = this._installQuery;
stmt.params.title = aTitle;
stmt.params.uri = aURI;
stmt.params.icon = aIconData;
stmt.executeAsync();
},
isApplicationInstalled: function(aURI) {
let stmt = this._findQuery;
let found = false;
try {
stmt.params.uri = aURI;
found = stmt.executeStep();
} finally {
stmt.reset();
}
return found;
},
// nsIObserver
observe: function(aSubject, aTopic, aData) {
Services.obs.removeObserver(this, "quit-application-granted");
// Finalize the statements that we have used
let stmts = [
"_installQuery",
"_findQuery"
];
for (let i = 0; i < stmts.length; i++) {
// We do not want to create any query we haven't already created, so
// see if it is a getter first.
if (Object.getOwnPropertyDescriptor(this, stmts[i]).value !== undefined) {
this[stmts[i]].finalize();
}
}
this.db.asyncClose();
},
// QI
QueryInterface: XPCOMUtils.generateQI([Ci.nsIWebappsSupport]),
// XPCOMUtils factory
classID: Components.ID("{cb1107c1-1e15-4f11-99c8-27b9ec221a2a}")
};
const NSGetFactory = XPCOMUtils.generateNSGetFactory([WebappsSupport]);