pjs/extensions/xmlterm/ui/xmlterm-service.js

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JavaScript

/*
* 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):
* Seth Spitzer <sspitzer@netscape.com>
* Robert Ginda <rginda@netscape.com>
* R. Saravanan <svn@xmlterm.org>
*/
/*
* This file contains the following xmlterm related components:
* 1. Command line handler service, for responding to the -terminal command line
* option. (XMLTermCLineHandler)
* 2. Content handler for responding to content of type x-application-terminal
* (XMLTermContentHandler)
* 3. Protocol handler for supplying a channel to the browser when an terminal://
* link is clicked. (XMLTermProtocolHandler)
* 4. A (nearly empty) imeplementation of nsIChannel for telling the browser
* that terminal:// links have the content type x-application-terminal (BogusChannel)
*/
/* components defined in this file */
const XMLTERMCLINE_SERVICE_CONTRACTID =
"@mozilla.org/commandlinehandler/general-startup;1?type=terminal";
const XMLTERMCLINE_SERVICE_CID =
Components.ID("{0eb82bE0-43a2-11d3-8e76-006008948af5}");
const XMLTERMCNT_HANDLER_CONTRACTID =
"@mozilla.org/uriloader/content-handler;1?type=x-application-terminal";
const XMLTERMCNT_HANDLER_CID =
Components.ID("{0eb82bE1-43a2-11d3-8e76-006008948af5}");
const XMLTERMPROT_HANDLER_CONTRACTID =
"@mozilla.org/network/protocol;1?name=terminal";
const XMLTERMPROT_HANDLER_CID =
Components.ID("{0eb82bE2-43a2-11d3-8e76-006008948af5}");
/* components used in this file */
const MEDIATOR_CONTRACTID =
"@mozilla.org/appshell/window-mediator;1"
const SIMPLEURI_CONTRACTID =
"@mozilla.org/network/simple-uri;1";
const ASS_CONTRACTID =
"@mozilla.org/appshell/appShellService;1";
const SCRIPTSECURITYMANAGER_CONTRACTID =
"@mozilla.org/scriptsecuritymanager;1";
const NS_IOSERVICE_CID_STR =
"{9ac9e770-18bc-11d3-9337-00104ba0fd40}";
/* interfaces used in this file */
const nsIWindowMediator = Components.interfaces.nsIWindowMediator;
const nsICmdLineHandler = Components.interfaces.nsICmdLineHandler;
const nsICategoryManager = Components.interfaces.nsICategoryManager;
const nsIContentHandler = Components.interfaces.nsIContentHandler;
const nsIProtocolHandler = Components.interfaces.nsIProtocolHandler;
const nsIURI = Components.interfaces.nsIURI;
const nsIChannel = Components.interfaces.nsIChannel;
const nsIRequest = Components.interfaces.nsIRequest;
const nsIAppShellService = Components.interfaces.nsIAppShellService;
const nsIIOService = Components.interfaces.nsIIOService;
const nsIScriptSecurityManager = Components.interfaces.nsIScriptSecurityManager;
const nsISupports = Components.interfaces.nsISupports;
/* Command Line handler service */
function XMLTermCLineService()
{}
XMLTermCLineService.prototype.commandLineArgument = "-terminal";
XMLTermCLineService.prototype.prefNameForStartup = "general.startup.terminal";
XMLTermCLineService.prototype.chromeUrlForTask="chrome://xmlterm/content";
XMLTermCLineService.prototype.helpText = "Start with a command line terminal";
XMLTermCLineService.prototype.handlesArgs=false;
XMLTermCLineService.prototype.defaultArgs ="";
XMLTermCLineService.prototype.openWindowWithArgs=false;
/* factory for command line handler service (XMLTermCLineService) */
XMLTermCLineFactory = new Object();
XMLTermCLineFactory.createInstance =
function (outer, iid) {
if (outer != null)
throw Components.results.NS_ERROR_NO_AGGREGATION;
if (!iid.equals(nsICmdLineHandler) && !iid.equals(nsISupports))
throw Components.results.NS_ERROR_INVALID_ARG;
return new XMLTermCLineService();
}
/* x-application-terminal content handler */
function XMLTermContentHandler ()
{}
XMLTermContentHandler.prototype.QueryInterface =
function (iid) {
if (!iid.equals(nsIContentHandler))
throw Components.results.NS_ERROR_NO_INTERFACE;
return this;
}
XMLTermContentHandler.prototype.handleContent =
function (aContentType, aCommand, aWindowContext, aRequest)
{
var e;
var aChannel = aRequest.QueryInterface(Components.interfaces.nsIChannel);
debug("XMLTermContentHandler.handleContent (" + aContentType + ", " +
aCommand + ", " + aWindowContext + ", " +
aChannel.URI.spec + ")\n");
var xmltermChromeURL = "chrome://xmlterm/content/xmlterm.xul?"+aChannel.URI.spec;
//dump("XMLTermContentHandler:xmltermChromeURL = " + xmltermChromeURL + "\n");
// Create new XMLterm window
var appShellSvc = Components.classes[ASS_CONTRACTID].getService(nsIAppShellService);
var domWin = appShellSvc.hiddenDOMWindow;
domWin.open(xmltermChromeURL,"_blank", "chrome,menubar,toolbar,resizable");
}
/* content handler factory object (XMLTermContentHandler) */
XMLTermContentHandlerFactory = new Object();
XMLTermContentHandlerFactory.createInstance =
function (outer, iid) {
if (outer != null)
throw Components.results.NS_ERROR_NO_AGGREGATION;
if (!iid.equals(nsIContentHandler) && !iid.equals(nsISupports))
throw Components.results.NS_ERROR_INVALID_ARG;
return new XMLTermContentHandler();
}
/* xmlterm protocol handler component */
function XMLTermProtocolHandler()
{
}
XMLTermProtocolHandler.prototype.scheme = "terminal";
XMLTermProtocolHandler.prototype.defaultPort = -1;
XMLTermProtocolHandler.prototype.URIType =
Components.interfaces.nsIProtocolHandler.URI_NORELATIVE;
XMLTermProtocolHandler.prototype.newURI =
function (aSpec, aCharset, aBaseURI)
{
if (aBaseURI)
{
debug("XMLTermProtocolHandler: aBaseURI passed to newURI, bailing.\n");
return null;
}
var uri = Components.classes[SIMPLEURI_CONTRACTID].createInstance(nsIURI);
uri.spec = aSpec;
return uri;
}
// "Global" variable
var gSystemPrincipal = null;
XMLTermProtocolHandler.prototype.newChannel =
function (aURI)
{
var uriSpec = aURI.spec
//dump("XMLTermProtocolHandler.newChannel: uriSpec="+uriSpec+"\n");
if (uriSpec != "terminal:xmlterm")
return new BogusChannel(aURI);
// Re-direct to chrome HTML document, but with system principal
var ioServ = Components.classesByID[NS_IOSERVICE_CID_STR].getService();
ioServ = ioServ.QueryInterface(nsIIOService);
// Open temporary XUL channel
var xulURI = ioServ.newURI("chrome://xmlterm/content/xmltermDummy.xul",
null, null);
var temChannel = ioServ.newChannelFromURI(xulURI);
// Get owner of XUL channel
var xulOwner = temChannel.owner;
if (!gSystemPrincipal) {
if (!xulOwner) {
debug("XMLTermProtocolHandler: Internal error; unable to obtain system principal\n");
throw Components.results.NS_ERROR_FAILURE;
}
gSystemPrincipal = xulOwner;
}
//dump("gSystemPrincipal="+gSystemPrincipal+"\n");
// Cancel XUL request and release channel
// why are you canceling here?! you have not even opened anything yet - dougt.
// temChannel.cancel(Components.results.NS_BINDING_ABORTED);
temChannel = null;
// Get current process directory
var dscontractid = "@mozilla.org/file/directory_service;1";
var ds = Components.classes[dscontractid].getService();
var dsprops = ds.QueryInterface(Components.interfaces.nsIProperties);
var file = dsprops.get("CurProcD", Components.interfaces.nsIFile);
file.append("chrome");
file.append("xmlterm.jar");
//dump("file="+file.path+"\n");
// Contruct JAR URI spec for xmlterm.html
// Use file: rather than resource: or chrome: scheme to allow
// xmlterm to load other file URLs without failing the security check
var jarURI = "jar:file:"+file.path+"!/content/xmlterm/xmlterm.html";
var newChannel = ioServ.newChannel(jarURI, null, null);
// Make new channel owned by system principal
newChannel.owner = gSystemPrincipal;
return newChannel;
}
/* protocol handler factory object (XMLTermProtocolHandler) */
XMLTermProtocolHandlerFactory = new Object();
XMLTermProtocolHandlerFactory.createInstance =
function (outer, iid) {
if (outer != null)
throw Components.results.NS_ERROR_NO_AGGREGATION;
if (!iid.equals(nsIProtocolHandler) && !iid.equals(nsISupports))
throw Components.results.NS_ERROR_INVALID_ARG;
return new XMLTermProtocolHandler();
}
/* bogus XMLTerm channel used by the XMLTermProtocolHandler */
function BogusChannel (aURI)
{
this.URI = aURI;
this.originalURI = aURI;
}
BogusChannel.prototype.QueryInterface =
function (iid) {
if (!iid.equals(nsIChannel) && !iid.equals(nsIRequest) &&
!iid.equals(nsISupports))
throw Components.results.NS_ERROR_NO_INTERFACE;
return this;
}
/* nsIChannel */
BogusChannel.prototype.loadAttributes = null;
BogusChannel.prototype.contentType = "x-application-terminal";
BogusChannel.prototype.contentLength = 0;
BogusChannel.prototype.owner = null;
BogusChannel.prototype.loadGroup = null;
BogusChannel.prototype.notificationCallbacks = null;
BogusChannel.prototype.securityInfo = null;
BogusChannel.prototype.shouldCache = false;
BogusChannel.prototype.open =
BogusChannel.prototype.asyncOpen =
function ()
{
throw Components.results.NS_ERROR_NOT_IMPLEMENTED;
}
BogusChannel.prototype.asyncOpen =
function (observer, ctxt)
{
observer.onStartRequest (this, ctxt);
}
/* nsIRequest */
BogusChannel.prototype.isPending =
function ()
{
return true;
}
BogusChannel.prototype.status = Components.results.NS_OK;
BogusChannel.prototype.cancel =
function (aStatus)
{
this.status = aStatus;
}
BogusChannel.prototype.parent =
BogusChannel.prototype.suspend =
BogusChannel.prototype.resume =
function ()
{
throw Components.results.NS_ERROR_NOT_IMPLEMENTED;
}
var XMLtermModule = new Object();
XMLtermModule.registerSelf =
function (compMgr, fileSpec, location, type)
{
debug("*** Registering -terminal handler.\n");
compMgr = compMgr.QueryInterface(Components.interfaces.nsIComponentRegistrar);
compMgr.registerFactoryLocation(XMLTERMCLINE_SERVICE_CID,
"XMLterm CommandLine Service",
XMLTERMCLINE_SERVICE_CONTRACTID,
fileSpec,
location,
type);
catman = Components.classes["@mozilla.org/categorymanager;1"]
.getService(nsICategoryManager);
catman.addCategoryEntry("command-line-argument-handlers",
"terminal command line handler",
XMLTERMCLINE_SERVICE_CONTRACTID, true, true);
debug("*** Registering x-application-terminal handler.\n");
compMgr.registerFactoryLocation(XMLTERMCNT_HANDLER_CID,
"XMLTerm Content Handler",
XMLTERMCNT_HANDLER_CONTRACTID,
fileSpec,
location,
type);
debug("*** Registering terminal protocol handler.\n");
compMgr.registerFactoryLocation(XMLTERMPROT_HANDLER_CID,
"XMLTerm protocol handler",
XMLTERMPROT_HANDLER_CONTRACTID,
fileSpec,
location,
type);
}
XMLtermModule.unregisterSelf =
function(compMgr, fileSpec, location)
{
compMgr = compMgr.QueryInterface(Components.interfaces.nsIComponentRegistrar);
compMgr.unregisterFactoryLocation(XMLTERMCLINE_SERVICE_CID, fileSpec);
catman = Components.classes["@mozilla.org/categorymanager;1"]
.getService(nsICategoryManager);
catman.deleteCategoryEntry("command-line-argument-handlers",
XMLTERMCLINE_SERVICE_CONTRACTID, true);
}
XMLtermModule.getClassObject =
function (compMgr, cid, iid) {
if (cid.equals(XMLTERMCLINE_SERVICE_CID))
return XMLTermCLineFactory;
if (cid.equals(XMLTERMCNT_HANDLER_CID))
return XMLTermContentHandlerFactory;
if (cid.equals(XMLTERMPROT_HANDLER_CID))
return XMLTermProtocolHandlerFactory;
if (!iid.equals(Components.interfaces.nsIFactory))
throw Components.results.NS_ERROR_NOT_IMPLEMENTED;
throw Components.results.NS_ERROR_NO_INTERFACE;
}
XMLtermModule.canUnload =
function(compMgr)
{
return true;
}
/* entrypoint */
function NSGetModule(compMgr, fileSpec) {
return XMLtermModule;
}