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nsSidebar.js
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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
* 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.org code.
*
* The Initial Developer of the Original Code is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1999 Netscape Communications Corporation. All
* Rights Reserved.
*
* Contributor(s): Stephen Lamm <slamm@netscape.com>
* Robert John Churchill <rjc@netscape.com>
*/
/*
* No magic constructor behaviour, as is de rigeur for XPCOM.
* If you must perform some initialization, and it could possibly fail (even
* due to an out-of-memory condition), you should use an Init method, which
* can convey failure appropriately (thrown exception in JS,
* NS_FAILED(nsresult) return in C++).
*
* In JS, you can actually cheat, because a thrown exception will cause the
* CreateInstance call to fail in turn, but not all languages are so lucky.
* (Though ANSI C++ provides exceptions, they are verboten in Mozilla code
* for portability reasons -- and even when you're building completely
* platform-specific code, you can't throw across an XPCOM method boundary.)
*/
const DEBUG = false; /* set to false to suppress debug messages */
const PANELS_RDF_FILE = "UPnls"; /* directory services property to find panels.rdf */
const SIDEBAR_CONTRACTID = "@mozilla.org/sidebar;1";
const SIDEBAR_CID = Components.ID("{22117140-9c6e-11d3-aaf1-00805f8a4905}");
const CONTAINER_CONTRACTID = "@mozilla.org/rdf/container;1";
const DIR_SERV_CONTRACTID = "@mozilla.org/file/directory_service;1"
const STD_URL_CONTRACTID = "@mozilla.org/network/standard-url;1"
const NETSEARCH_CONTRACTID = "@mozilla.org/rdf/datasource;1?name=internetsearch"
const nsISupports = Components.interfaces.nsISupports;
const nsIFactory = Components.interfaces.nsIFactory;
const nsISidebar = Components.interfaces.nsISidebar;
const nsIRDFContainer = Components.interfaces.nsIRDFContainer;
const nsIProperties = Components.interfaces.nsIProperties;
const nsIFileURL = Components.interfaces.nsIFileURL;
const nsIRDFRemoteDataSource = Components.interfaces.nsIRDFRemoteDataSource;
const nsIInternetSearchService = Components.interfaces.nsIInternetSearchService;
const nsISecurityCheckedComponent = Components.interfaces.nsISecurityCheckedComponent;
function nsSidebar()
{
const RDF_CONTRACTID = "@mozilla.org/rdf/rdf-service;1";
const nsIRDFService = Components.interfaces.nsIRDFService;
this.rdf = Components.classes[RDF_CONTRACTID].getService(nsIRDFService);
this.datasource_uri = getSidebarDatasourceURI(PANELS_RDF_FILE);
debug('datasource_uri is ' + this.datasource_uri);
this.resource = 'urn:sidebar:current-panel-list';
this.datasource = this.rdf.GetDataSource(this.datasource_uri);
}
nsSidebar.prototype.nc = "http://home.netscape.com/NC-rdf#";
nsSidebar.prototype.setWindow =
function (aWindow)
{
this.window = aWindow;
}
nsSidebar.prototype.isPanel =
function (aContentURL)
{
var container =
Components.classes[CONTAINER_CONTRACTID].createInstance(nsIRDFContainer);
container.Init(this.datasource, this.rdf.GetResource(this.resource));
/* Create a resource for the new panel and add it to the list */
var panel_resource =
this.rdf.GetResource("urn:sidebar:3rdparty-panel:" + aContentURL);
return (container.IndexOf(panel_resource) != -1);
}
/* decorate prototype to provide ``class'' methods and property accessors */
nsSidebar.prototype.addPanel =
function (aTitle, aContentURL, aCustomizeURL)
{
debug("addPanel(" + aTitle + ", " + aContentURL + ", " +
aCustomizeURL + ")");
if (!this.window)
{
debug ("no window object set, bailing out.");
throw Components.results.NS_ERROR_NOT_INITIALIZED;
}
// Create a "container" wrapper around the current panels to
// manipulate the RDF:Seq more easily.
var panel_list = this.datasource.GetTarget(this.rdf.GetResource(this.resource), this.rdf.GetResource(nsSidebar.prototype.nc+"panel-list"), true);
if (panel_list) {
panel_list.QueryInterface(Components.interfaces.nsIRDFResource);
} else {
// Datasource is busted. Start over.
debug("Sidebar datasource is busted\n");
}
var container = Components.classes[CONTAINER_CONTRACTID].createInstance(nsIRDFContainer);
container.Init(this.datasource, panel_list);
/* Create a resource for the new panel and add it to the list */
var panel_resource =
this.rdf.GetResource("urn:sidebar:3rdparty-panel:" + aContentURL);
var panel_index = container.IndexOf(panel_resource);
if (panel_index != -1)
{
var titleMessage, dialogMessage;
try {
var stringBundle = getStringBundle("chrome://communicator/locale/sidebar/sidebar.properties");
if (stringBundle) {
titleMessage = stringBundle.GetStringFromName("dupePanelAlertTitle");
dialogMessage = stringBundle.GetStringFromName("dupePanelAlertMessage");
dialogMessage = dialogMessage.replace(/%url%/, aContentURL);
}
}
catch (e) {
titleMessage = "My Sidebar";
dialogMessage = aContentURL + " already exists in My Sidebar.";
}
var cDlgService = Components.classes["@mozilla.org/appshell/commonDialogs;1"].getService();
if (cDlgService)
cDlgService = cDlgService.QueryInterface(Components.interfaces.nsICommonDialogs);
cDlgService.Alert(this.window, titleMessage, dialogMessage);
return;
}
var titleMessage, dialogMessage;
try {
var stringBundle = getStringBundle("chrome://communicator/locale/sidebar/sidebar.properties");
if (stringBundle) {
titleMessage = stringBundle.GetStringFromName("addPanelConfirmTitle");
dialogMessage = stringBundle.GetStringFromName("addPanelConfirmMessage");
dialogMessage = dialogMessage.replace(/%title%/, aTitle);
dialogMessage = dialogMessage.replace(/%url%/, aContentURL);
dialogMessage = dialogMessage.replace(/#/g, "\n");
}
}
catch (e) {
titleMessage = "Add Tab to My Sidebar";
dialogMessage = "Add the Tab '" + aTitle + "' to My Sidebar?\n\n" + "Source: " + aContentURL;
}
var cDlgService = Components.classes["@mozilla.org/appshell/commonDialogs;1"].getService();
if (cDlgService)
cDlgService = cDlgService.QueryInterface(Components.interfaces.nsICommonDialogs);
var rv = cDlgService.Confirm(this.window, titleMessage, dialogMessage);
if (!rv)
return;
/* Now make some sidebar-ish assertions about it... */
this.datasource.Assert(panel_resource,
this.rdf.GetResource(this.nc + "title"),
this.rdf.GetLiteral(aTitle),
true);
this.datasource.Assert(panel_resource,
this.rdf.GetResource(this.nc + "content"),
this.rdf.GetLiteral(aContentURL),
true);
if (aCustomizeURL)
this.datasource.Assert(panel_resource,
this.rdf.GetResource(this.nc + "customize"),
this.rdf.GetLiteral(aCustomizeURL),
true);
container.AppendElement(panel_resource);
// Use an assertion to pass a "refresh" event to all the sidebars.
// They use observers to watch for this assertion (in sidebarOverlay.js).
this.datasource.Assert(this.rdf.GetResource(this.resource),
this.rdf.GetResource(this.nc + "refresh"),
this.rdf.GetLiteral("true"),
true);
this.datasource.Unassert(this.rdf.GetResource(this.resource),
this.rdf.GetResource(this.nc + "refresh"),
this.rdf.GetLiteral("true"));
/* Write the modified panels out. */
this.datasource.QueryInterface(nsIRDFRemoteDataSource).Flush();
}
/* decorate prototype to provide ``class'' methods and property accessors */
nsSidebar.prototype.addSearchEngine =
function (engineURL, iconURL, suggestedTitle, suggestedCategory)
{
debug("addSearchEngine(" + engineURL + ", " + iconURL + ", " +
suggestedCategory + ", " + suggestedTitle + ")");
if (!this.window)
{
debug ("no window object set, bailing out.");
throw Components.results.NS_ERROR_NOT_INITIALIZED;
}
try
{
// make sure using HTTP (for both engine as well as icon URLs)
if (engineURL.search(/^http:\/\//i) == -1)
{
debug ("must use HTTP to fetch search engine file");
throw Components.results.NS_ERROR_INVALID_ARG;
}
if (iconURL.search(/^http:\/\//i) == -1)
{
debug ("must use HTTP to fetch search icon file");
throw Components.results.NS_ERROR_INVALID_ARG;
}
// make sure engineURL refers to a .src file
if (engineURL.search(/\.src$/i) == -1)
{
debug ("engineURL doesn't reference a .src file");
throw Components.results.NS_ERROR_INVALID_ARG;
}
// make sure iconURL refers to a .gif/.jpg/.jpeg/.png file
if (iconURL.search(/\.(gif|jpg|jpeg|png)$/i) == -1)
{
debug ("iconURL doesn't reference a supported image file");
throw Components.results.NS_ERROR_INVALID_ARG;
}
}
catch(ex)
{
this.window.alert("Failed to add the search engine.\n");
throw Components.results.NS_ERROR_INVALID_ARG;
}
var titleMessage, dialogMessage;
try {
var stringBundle = getStringBundle("chrome://communicator/locale/sidebar/sidebar.properties");
if (stringBundle) {
titleMessage = stringBundle.GetStringFromName("addEngineConfirmTitle");
dialogMessage = stringBundle.GetStringFromName("addEngineConfirmMessage");
dialogMessage = dialogMessage.replace(/%title%/, suggestedTitle);
dialogMessage = dialogMessage.replace(/%category%/, suggestedCategory);
dialogMessage = dialogMessage.replace(/%url%/, engineURL);
dialogMessage = dialogMessage.replace(/#/g, "\n");
}
}
catch (e) {
titleMessage = "Add Search Engine";
dialogMessage = "Add the following search engine?\n\nName: " + suggestedTitle;
dialogMessage += "\nSearch Category: " + suggestedCategory;
dialogMessage += "\nSource: " + engineURL;
}
var cDlgService = Components.classes["@mozilla.org/appshell/commonDialogs;1"].getService();
if (cDlgService)
cDlgService = cDlgService.QueryInterface(Components.interfaces.nsICommonDialogs);
var rv = cDlgService.Confirm(this.window, titleMessage, dialogMessage);
if (!rv)
return;
var internetSearch = Components.classes[NETSEARCH_CONTRACTID].getService();
if (internetSearch)
internetSearch = internetSearch.QueryInterface(nsIInternetSearchService);
if (internetSearch)
{
internetSearch.AddSearchEngine(engineURL, iconURL, suggestedTitle,
suggestedCategory);
}
}
// method of nsISecurityCheckedComponent
nsSidebar.prototype.canCreateWrapper =
function (iid) {
return "NoAccess";
}
// method of nsISecurityCheckedComponent
nsSidebar.prototype.canCallMethod =
function (iid, methodName) {
if (iid.equals(nsISidebar) &&
(methodName == "setWindow" ||
methodName == "addPanel" ||
methodName == "addSearchEngine")) {
return "AllAccess";
} else {
return "NoAccess";
}
}
// method of nsISecurityCheckedComponent
nsSidebar.prototype.canGetProperty =
function (iid, propertyName) {
return "NoAccess";
}
// method of nsISecurityCheckedComponent
nsSidebar.prototype.canSetProperty =
function (iid, propertyName) {
return "NoAccess";
}
nsSidebar.prototype.QueryInterface =
function (iid) {
if (!iid.equals(nsISidebar) &&
!iid.equals(nsISecurityCheckedComponent) &&
!iid.equals(nsISupports))
throw Components.results.NS_ERROR_NO_INTERFACE;
return this;
}
var sidebarModule = new Object();
sidebarModule.registerSelf =
function (compMgr, fileSpec, location, type)
{
debug("registering (all right -- a JavaScript module!)");
compMgr.registerComponentWithType(SIDEBAR_CID, "Sidebar JS Component",
SIDEBAR_CONTRACTID, fileSpec, location,
true, true, type);
}
sidebarModule.getClassObject =
function (compMgr, cid, iid) {
if (!cid.equals(SIDEBAR_CID))
throw Components.results.NS_ERROR_NO_INTERFACE;
if (!iid.equals(Components.interfaces.nsIFactory))
throw Components.results.NS_ERROR_NOT_IMPLEMENTED;
return sidebarFactory;
}
sidebarModule.canUnload =
function(compMgr)
{
debug("Unloading component.");
return true;
}
/* factory object */
sidebarFactory = new Object();
sidebarFactory.createInstance =
function (outer, iid) {
debug("CI: " + iid);
if (outer != null)
throw Components.results.NS_ERROR_NO_AGGREGATION;
return (new nsSidebar()).QueryInterface(iid);
}
/* entrypoint */
function NSGetModule(compMgr, fileSpec) {
return sidebarModule;
}
/* static functions */
if (DEBUG)
debug = function (s) { dump("-*- sidebar component: " + s + "\n"); }
else
debug = function (s) {}
function getSidebarDatasourceURI(panels_file_id)
{
try
{
/* use the fileLocator to look in the profile directory
* to find 'panels.rdf', which is the
* database of the user's currently selected panels. */
var directory_service = Components.classes[DIR_SERV_CONTRACTID].getService();
if (directory_service)
directory_service = directory_service.QueryInterface(Components.interfaces.nsIProperties);
/* if <profile>/panels.rdf doesn't exist, get will copy
*bin/defaults/profile/panels.rdf to <profile>/panels.rdf */
var sidebar_file = directory_service.get(panels_file_id, Components.interfaces.nsIFile);
if (!sidebar_file.exists())
{
/* this should not happen, as GetFileLocation() should copy
* defaults/panels.rdf to the users profile directory */
debug("sidebar file does not exist");
return null;
}
var file_url = Components.classes[STD_URL_CONTRACTID].createInstance(Components.interfaces.nsIFileURL);
file_url.file = sidebar_file;
debug("sidebar uri is " + file_url.spec);
return file_url.spec;
}
catch (ex)
{
/* this should not happen */
debug("caught " + ex + " getting sidebar datasource uri");
return null;
}
}
function getStringBundle(aURL)
{
var stringBundleService = Components.classes["@mozilla.org/intl/stringbundle;1"].getService();
stringBundleService = stringBundleService.QueryInterface(Components.interfaces.nsIStringBundleService);
var appLocale;
var localeService = Components.classes["@mozilla.org/intl/nslocaleservice;1"].getService();
if (localeService)
localeService = localeService.QueryInterface(Components.interfaces.nsILocaleService);
if (localeService)
appLocale = localeService.GetApplicationLocale();
var stringBundle = stringBundleService.CreateBundle(aURL, appLocale);
if (stringBundle)
return stringBundle.QueryInterface(Components.interfaces.nsIStringBundle);
}