/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ /* ***** BEGIN LICENSE BLOCK ***** * Version: NPL 1.1/GPL 2.0/LGPL 2.1 * * The contents of this file are subject to the Netscape 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/NPL/ * * 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 the Initial Developer are Copyright (C) 1998 * the Initial Developer. All Rights Reserved. * * Contributor(s): * * * 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 NPL, 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 NPL, the GPL or the LGPL. * * ***** END LICENSE BLOCK ***** */ #include "nsString.h" #include "nsIController.h" #include "nsIObserver.h" #include "nsIComponentManager.h" #include "nsIDOMWindow.h" #include "nsPIDOMWindow.h" #include "nsIFocusController.h" #include "nsSupportsArray.h" #include "nsCommandManager.h" nsCommandManager::nsCommandManager() : mWindow(nsnull) { NS_INIT_ISUPPORTS(); /* member initializers and constructor code */ } nsCommandManager::~nsCommandManager() { /* destructor code */ } NS_IMPL_ISUPPORTS3(nsCommandManager, nsICommandManager, nsPICommandUpdater, nsISupportsWeakReference) #if 0 #pragma mark - #endif /* void init (in nsIDOMWindow aWindow); */ NS_IMETHODIMP nsCommandManager::Init(nsIDOMWindow *aWindow) { NS_ENSURE_ARG_POINTER(aWindow); NS_ASSERTION(aWindow, "Need non-null window here"); mWindow = aWindow; // weak ptr return NS_OK; } /* void commandStatusChanged (in DOMString aCommandName, in long aChangeFlags); */ NS_IMETHODIMP nsCommandManager::CommandStatusChanged(const char * aCommandName) { nsCStringKey hashKey(aCommandName); nsresult rv = NS_OK; nsCOMPtr commandSupports = getter_AddRefs(mCommandObserversTable.Get(&hashKey)); nsCOMPtr commandObservers = do_QueryInterface(commandSupports); if (commandObservers) { PRUint32 numItems; rv = commandObservers->Count(&numItems); if (NS_FAILED(rv)) return rv; for (PRUint32 i = 0; i < numItems; i ++) { nsCOMPtr itemSupports; rv = commandObservers->GetElementAt(i, getter_AddRefs(itemSupports)); if (NS_FAILED(rv)) break; nsCOMPtr itemObserver = do_QueryInterface(itemSupports); if (itemObserver) { // should we get the command state to pass here? This might be expensive. itemObserver->Observe((nsICommandManager *)this, aCommandName,NS_LITERAL_STRING("command_status_changed").get()); } } } return NS_OK; } #if 0 #pragma mark - #endif /* void addCommandObserver (in nsIObserver aCommandObserver, in wstring aCommandToObserve); */ NS_IMETHODIMP nsCommandManager::AddCommandObserver(nsIObserver *aCommandObserver, const char *aCommandToObserve) { NS_ENSURE_ARG(aCommandObserver); nsresult rv = NS_OK; // XXX todo: handle special cases of aCommandToObserve being null, or empty // for each command in the table, we make a list of observers for that command nsCStringKey hashKey(aCommandToObserve); nsCOMPtr commandSupports = getter_AddRefs(mCommandObserversTable.Get(&hashKey)); nsCOMPtr commandObservers = do_QueryInterface(commandSupports); if (!commandObservers) { rv = NS_NewISupportsArray(getter_AddRefs(commandObservers)); if (NS_FAILED(rv)) return rv; commandSupports = do_QueryInterface(commandObservers); rv = mCommandObserversTable.Put(&hashKey, commandSupports); if (NS_FAILED(rv)) return rv; } // need to check that this command observer hasn't already been registered nsCOMPtr observerAsSupports = do_QueryInterface(aCommandObserver); PRInt32 existingIndex = commandObservers->IndexOf(observerAsSupports); if (existingIndex == -1) rv = commandObservers->AppendElement(observerAsSupports); else NS_WARNING("Registering command observer twice on the same command"); return rv; } /* void removeCommandObserver (in nsIObserver aCommandObserver, in wstring aCommandObserved); */ NS_IMETHODIMP nsCommandManager::RemoveCommandObserver(nsIObserver *aCommandObserver, const char *aCommandObserved) { NS_ENSURE_ARG(aCommandObserver); // XXX todo: handle special cases of aCommandToObserve being null, or empty nsCStringKey hashKey(aCommandObserved); nsCOMPtr commandSupports = getter_AddRefs(mCommandObserversTable.Get(&hashKey)); nsCOMPtr commandObservers = do_QueryInterface(commandSupports); if (!commandObservers) return NS_ERROR_UNEXPECTED; nsresult removed = commandObservers->RemoveElement(aCommandObserver); return (removed) ? NS_OK : NS_ERROR_FAILURE; } /* boolean isCommandSupported (in wstring aCommandName); */ NS_IMETHODIMP nsCommandManager::IsCommandSupported(const char *aCommandName, PRBool *outCommandSupported) { NS_ENSURE_ARG_POINTER(outCommandSupported); nsCOMPtr controller; nsresult rv = GetControllerForCommand(aCommandName, getter_AddRefs(controller)); *outCommandSupported = (controller.get() != nsnull); return NS_OK; } /* boolean isCommandEnabled (in wstring aCommandName); */ NS_IMETHODIMP nsCommandManager::IsCommandEnabled(const char *aCommandName, PRBool *outCommandEnabled) { NS_ENSURE_ARG_POINTER(outCommandEnabled); PRBool commandEnabled = PR_FALSE; nsCOMPtr controller; nsresult rv = GetControllerForCommand(aCommandName, getter_AddRefs(controller)); if (controller) { controller->IsCommandEnabled(aCommandName, &commandEnabled); } *outCommandEnabled = commandEnabled; return NS_OK; } /* void getCommandState (in DOMString aCommandName, inout nsICommandParams aCommandParams); */ NS_IMETHODIMP nsCommandManager::GetCommandState(const char *aCommandName, nsICommandParams *aCommandParams) { nsCOMPtr controller; nsAutoString tValue; nsresult rv = GetControllerForCommand(aCommandName, getter_AddRefs(controller)); if (!controller) return NS_ERROR_FAILURE; nsCOMPtr commandController = do_QueryInterface(controller); if (commandController) rv = commandController->GetCommandState(aCommandName,aCommandParams); else rv = NS_ERROR_NOT_IMPLEMENTED; return rv; } /* void doCommand (nsICommandParams aCommandParams); */ NS_IMETHODIMP nsCommandManager::DoCommand(const char *aCommandName, nsICommandParams *aCommandParams) { nsCOMPtr controller; nsresult rv = GetControllerForCommand(aCommandName, getter_AddRefs(controller)); if (!controller) return NS_ERROR_FAILURE; nsCOMPtr commandController = do_QueryInterface(controller); if (commandController) rv = commandController->DoCommand(aCommandName,aCommandParams); else rv = controller->DoCommand(aCommandName); return rv; } #ifdef XP_MAC #pragma mark - #endif nsresult nsCommandManager::GetControllerForCommand(const char *aCommand, nsIController** outController) { nsresult rv = NS_ERROR_FAILURE; nsCOMPtr window = do_QueryInterface(mWindow); if (!window) return NS_ERROR_FAILURE; nsCOMPtr focusController; rv = window->GetRootFocusController(getter_AddRefs(focusController)); if (!focusController) return NS_ERROR_FAILURE; return focusController->GetControllerForCommand(aCommand, outController); }