mirror of
https://github.com/mozilla/gecko-dev.git
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345 lines
10 KiB
C++
345 lines
10 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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*/
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#include "nsCOMPtr.h"
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#include "nsIServiceManager.h"
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#include "nsIComponentManager.h"
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#include "nsEditorCID.h"
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#include "nsEditorShell.h" // for the CID
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#include "nsEditor.h" // for gInstanceCount
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#include "nsIModule.h"
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#include "nsIGenericFactory.h"
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#ifdef ENABLE_EDITOR_API_LOG
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#include "nsHTMLEditorLog.h"
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#endif // ENABLE_EDITOR_API_LOG
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static NS_DEFINE_CID(kHTMLEditorCID, NS_HTMLEDITOR_CID);
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static NS_DEFINE_CID(kEditorShellCID, NS_EDITORSHELL_CID);
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// Module implementation
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class nsEditorModule : public nsIModule
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{
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public:
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nsEditorModule();
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virtual ~nsEditorModule();
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NS_DECL_ISUPPORTS
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NS_DECL_NSIMODULE
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protected:
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nsresult Initialize();
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void Shutdown();
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PRBool mInitialized;
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nsCOMPtr<nsIGenericFactory> mEditorFactory;
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nsCOMPtr<nsIGenericFactory> mEditorShellFactory;
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};
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//----------------------------------------------------------------------
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nsEditorModule::nsEditorModule()
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: mInitialized(PR_FALSE)
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{
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NS_INIT_ISUPPORTS();
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}
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nsEditorModule::~nsEditorModule()
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{
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Shutdown();
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}
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NS_IMPL_ISUPPORTS(nsEditorModule, NS_GET_IID(nsIModule))
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// Perform our one-time intialization for this module
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nsresult
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nsEditorModule::Initialize()
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{
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if (mInitialized) {
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return NS_OK;
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}
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mInitialized = PR_TRUE;
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return NS_OK;
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}
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// Shutdown this module, releasing all of the module resources
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void
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nsEditorModule::Shutdown()
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{
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// Release the factory objects
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mEditorFactory = nsnull;
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mEditorShellFactory = nsnull;
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}
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static NS_IMETHODIMP
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CreateNewEditor(nsISupports* aOuter, REFNSIID aIID, void **aResult)
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{
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if (!aResult) {
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return NS_ERROR_INVALID_POINTER;
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}
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if (aOuter) {
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*aResult = nsnull;
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return NS_ERROR_NO_AGGREGATION;
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}
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// XXX Fix me.
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// XXX Need to cast to interface first to avoid "ambiguous conversion..." error
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// XXX because of multiple nsISupports in the class hierarchy
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nsISupports *inst;
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#ifdef ENABLE_EDITOR_API_LOG
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inst = (nsISupports *)(nsIHTMLEditor*)new nsHTMLEditorLog();
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#else
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inst = (nsISupports *)(nsIHTMLEditor*)new nsHTMLEditor();
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#endif // ENABLE_EDITOR_API_LOG
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if (inst == NULL) {
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*aResult = nsnull;
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return NS_ERROR_OUT_OF_MEMORY;
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}
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NS_ADDREF(inst);
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nsresult rv = inst->QueryInterface(aIID, aResult);
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if (NS_FAILED(rv)) {
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*aResult = nsnull;
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}
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NS_RELEASE(inst); /* get rid of extra refcnt */
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return rv;
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}
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static NS_IMETHODIMP
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CreateNewEditorShell(nsISupports* aOuter, REFNSIID aIID, void **aResult)
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{
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if (!aResult) {
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return NS_ERROR_INVALID_POINTER;
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}
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if (aOuter) {
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*aResult = nsnull;
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return NS_ERROR_NO_AGGREGATION;
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}
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nsIEditorShell* inst = nsnull;
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nsresult rv = NS_NewEditorShell(&inst);
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if (NS_FAILED(rv)) {
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*aResult = nsnull;
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return rv;
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}
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rv = inst->QueryInterface(aIID, aResult);
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if (NS_FAILED(rv)) {
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*aResult = nsnull;
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}
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NS_RELEASE(inst); /* get rid of extra refcnt */
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return rv;
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}
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// Create a factory object for creating instances of aClass.
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NS_IMETHODIMP
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nsEditorModule::GetClassObject(nsIComponentManager *aCompMgr,
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const nsCID& aClass,
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const nsIID& aIID,
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void** r_classObj)
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{
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nsresult rv;
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// Defensive programming: Initialize *r_classObj in case of error below
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if (!r_classObj) {
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return NS_ERROR_INVALID_POINTER;
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}
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*r_classObj = NULL;
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// Do one-time-only initialization if necessary
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if (!mInitialized) {
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rv = Initialize();
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if (NS_FAILED(rv)) {
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// Initialization failed! yikes!
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return rv;
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}
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}
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// Choose the appropriate factory, based on the desired instance
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// class type (aClass).
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nsCOMPtr<nsIGenericFactory> fact;
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if (aClass.Equals(kHTMLEditorCID)) {
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if (!mEditorFactory) {
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// Create and save away the factory object for creating
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// new instances of EditorFactory. This way if we are called
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// again for the factory, we won't need to create a new
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// one.
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rv = NS_NewGenericFactory(getter_AddRefs(mEditorFactory),
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CreateNewEditor);
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}
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fact = mEditorFactory;
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}
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else if (aClass.Equals(kEditorShellCID)) {
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if (!mEditorShellFactory) {
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// Create and save away the factory object for creating
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// new instances of EditorShellFactory. This way if we are called
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// again for the factory, we won't need to create a new
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// one.
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rv = NS_NewGenericFactory(getter_AddRefs(mEditorShellFactory),
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CreateNewEditorShell);
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}
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fact = mEditorShellFactory;
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}
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else {
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rv = NS_ERROR_FACTORY_NOT_REGISTERED;
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#ifdef DEBUG
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char* cs = aClass.ToString();
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printf("+++ nsEditorModule: unable to create factory for %s\n", cs);
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nsCRT::free(cs);
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#endif
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}
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if (fact) {
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rv = fact->QueryInterface(aIID, r_classObj);
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}
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return rv;
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}
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//----------------------------------------
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struct Components {
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const char* mDescription;
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const nsID* mCID;
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const char* mProgID;
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};
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// The list of components we register
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static Components gComponents[] = {
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{ "HTML Editor", &kHTMLEditorCID,
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"component://netscape/editor/htmleditor", },
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{ "Editor Shell Component", &kEditorShellCID,
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"component://netscape/editor/editorshell", },
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{ "Editor Shell Spell Checker", &kEditorShellCID,
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"component://netscape/editor/editorspellcheck", },
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};
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#define NUM_COMPONENTS (sizeof(gComponents) / sizeof(gComponents[0]))
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NS_IMETHODIMP
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nsEditorModule::RegisterSelf(nsIComponentManager *aCompMgr,
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nsIFileSpec* aPath,
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const char* registryLocation,
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const char* componentType)
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{
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nsresult rv = NS_OK;
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#ifdef DEBUG
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printf("*** Registering Editor components\n");
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#endif
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Components* cp = gComponents;
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Components* end = cp + NUM_COMPONENTS;
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while (cp < end) {
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rv = aCompMgr->RegisterComponentSpec(*cp->mCID, cp->mDescription,
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cp->mProgID, aPath, PR_TRUE,
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PR_TRUE);
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if (NS_FAILED(rv)) {
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#ifdef DEBUG
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printf("nsEditorModule: unable to register %s component => %x\n",
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cp->mDescription, rv);
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#endif
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break;
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}
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cp++;
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}
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return rv;
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}
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NS_IMETHODIMP
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nsEditorModule::UnregisterSelf(nsIComponentManager* aCompMgr,
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nsIFileSpec* aPath,
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const char* registryLocation)
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{
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#ifdef DEBUG
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printf("*** Unregistering Editor components\n");
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#endif
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Components* cp = gComponents;
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Components* end = cp + NUM_COMPONENTS;
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while (cp < end) {
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nsresult rv = aCompMgr->UnregisterComponentSpec(*cp->mCID, aPath);
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if (NS_FAILED(rv)) {
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#ifdef DEBUG
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printf("nsEditorModule: unable to unregister %s component => %x\n",
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cp->mDescription, rv);
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#endif
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}
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cp++;
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}
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return NS_OK;
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}
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NS_IMETHODIMP
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nsEditorModule::CanUnload(nsIComponentManager *aCompMgr, PRBool *okToUnload)
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{
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if (!okToUnload) {
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return NS_ERROR_INVALID_POINTER;
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}
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// we might want to check nsEditor::gInstanceCount == 0 and count
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// factory locks here one day.
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*okToUnload = PR_FALSE;
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return NS_ERROR_FAILURE;
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}
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//----------------------------------------------------------------------
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static nsEditorModule *gModule = NULL;
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extern "C" NS_EXPORT nsresult NSGetModule(nsIComponentManager *servMgr,
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nsIFileSpec* location,
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nsIModule** return_cobj)
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{
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nsresult rv = NS_OK;
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NS_ENSURE_ARG_POINTER(return_cobj);
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NS_ENSURE_FALSE(gModule, NS_ERROR_FAILURE);
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// Create and initialize the module instance
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nsEditorModule *m = new nsEditorModule();
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if (!m) {
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return NS_ERROR_OUT_OF_MEMORY;
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}
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// Increase refcnt and store away nsIModule interface to m in return_cobj
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rv = m->QueryInterface(NS_GET_IID(nsIModule), (void**)return_cobj);
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if (NS_FAILED(rv)) {
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delete m;
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m = nsnull;
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}
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gModule = m; // WARNING: Weak Reference
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return rv;
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}
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