mirror of
https://github.com/mozilla/gecko-dev.git
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552 lines
14 KiB
C++
552 lines
14 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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* Pierre Phaneuf <pp@ludusdesign.com>
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*/
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#include "nsCOMPtr.h"
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#include "nsVoidArray.h"
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#include "nsIContentViewer.h"
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#include "nsIDocumentViewer.h"
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#include "nsIDocument.h"
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#include "nsIDOMDocument.h"
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#include "nsIDOMXULDocument.h"
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#include "nsIDiskDocument.h"
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#include "nsIDOMElement.h"
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#include "nsIDOMSelection.h"
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#include "nsIDOMAttr.h"
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#include "nsIDOMXULCommandDispatcher.h"
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#include "nsIScriptGlobalObject.h"
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#include "nsIDOMWindow.h"
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#include "nsITimer.h"
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#include "nsIEditor.h"
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#include "nsIHTMLEditor.h"
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#include "nsITransactionManager.h"
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#include "nsInterfaceState.h"
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nsInterfaceState::nsInterfaceState()
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: mEditor(nsnull)
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, mChromeDoc(nsnull)
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, mDOMWindow(nsnull)
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, mBoldState(eStateUninitialized)
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, mItalicState(eStateUninitialized)
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, mUnderlineState(eStateUninitialized)
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, mDirtyState(eStateUninitialized)
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, mSelectionCollapsed(eStateUninitialized)
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, mFirstDoOfFirstUndo(PR_TRUE)
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{
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NS_INIT_REFCNT();
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}
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nsInterfaceState::~nsInterfaceState()
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{
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}
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NS_IMPL_ADDREF(nsInterfaceState);
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NS_IMPL_RELEASE(nsInterfaceState);
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NS_IMPL_QUERY_INTERFACE4(nsInterfaceState, nsIDOMSelectionListener, nsIDocumentStateListener, nsITransactionListener, nsITimerCallback);
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NS_IMETHODIMP
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nsInterfaceState::Init(nsIHTMLEditor* aEditor, nsIDOMXULDocument *aChromeDoc)
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{
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if (!aEditor)
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return NS_ERROR_INVALID_ARG;
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if (!aChromeDoc)
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return NS_ERROR_INVALID_ARG;
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mEditor = aEditor; // no addreffing here
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mChromeDoc = aChromeDoc;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsInterfaceState::NotifyDocumentCreated()
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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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nsInterfaceState::TableCellNotification(nsIDOMNode* aNode, PRInt32 aOffset)
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{
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//stub
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return NS_OK;
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}
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NS_IMETHODIMP
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nsInterfaceState::NotifyDocumentWillBeDestroyed()
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{
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// cancel any outstanding udpate timer
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if (mUpdateTimer)
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mUpdateTimer->Cancel();
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return NS_OK;
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}
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NS_IMETHODIMP
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nsInterfaceState::NotifyDocumentStateChanged(PRBool aNowDirty)
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{
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// update document modified. We should have some other notifications for this too.
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return UpdateDirtyState(aNowDirty);
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}
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NS_IMETHODIMP
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nsInterfaceState::NotifySelectionChanged()
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{
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return PrimeUpdateTimer();
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}
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#ifdef XP_MAC
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#pragma mark -
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#endif
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NS_IMETHODIMP nsInterfaceState::WillDo(nsITransactionManager *aManager,
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nsITransaction *aTransaction, PRBool *aInterrupt)
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{
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*aInterrupt = PR_FALSE;
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return NS_OK;
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}
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NS_IMETHODIMP nsInterfaceState::DidDo(nsITransactionManager *aManager,
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nsITransaction *aTransaction, nsresult aDoResult)
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{
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// only need to update if the status of the Undo menu item changes.
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PRInt32 undoCount;
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aManager->GetNumberOfUndoItems(&undoCount);
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if (undoCount == 1)
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{
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if (mFirstDoOfFirstUndo)
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CallUpdateCommands(nsAutoString("undo"));
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mFirstDoOfFirstUndo = PR_FALSE;
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}
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return NS_OK;
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}
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NS_IMETHODIMP nsInterfaceState::WillUndo(nsITransactionManager *aManager,
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nsITransaction *aTransaction, PRBool *aInterrupt)
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{
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*aInterrupt = PR_FALSE;
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return NS_OK;
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}
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NS_IMETHODIMP nsInterfaceState::DidUndo(nsITransactionManager *aManager,
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nsITransaction *aTransaction, nsresult aUndoResult)
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{
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PRInt32 undoCount;
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aManager->GetNumberOfUndoItems(&undoCount);
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if (undoCount == 0)
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mFirstDoOfFirstUndo = PR_TRUE; // reset the state for the next do
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CallUpdateCommands(nsAutoString("undo"));
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return NS_OK;
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}
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NS_IMETHODIMP nsInterfaceState::WillRedo(nsITransactionManager *aManager,
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nsITransaction *aTransaction, PRBool *aInterrupt)
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{
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*aInterrupt = PR_FALSE;
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return NS_OK;
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}
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NS_IMETHODIMP nsInterfaceState::DidRedo(nsITransactionManager *aManager,
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nsITransaction *aTransaction, nsresult aRedoResult)
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{
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CallUpdateCommands(nsAutoString("undo"));
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return NS_OK;
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}
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NS_IMETHODIMP nsInterfaceState::WillBeginBatch(nsITransactionManager *aManager, PRBool *aInterrupt)
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{
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*aInterrupt = PR_FALSE;
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return NS_OK;
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}
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NS_IMETHODIMP nsInterfaceState::DidBeginBatch(nsITransactionManager *aManager, nsresult aResult)
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{
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return NS_OK;
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}
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NS_IMETHODIMP nsInterfaceState::WillEndBatch(nsITransactionManager *aManager, PRBool *aInterrupt)
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{
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*aInterrupt = PR_FALSE;
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return NS_OK;
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}
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NS_IMETHODIMP nsInterfaceState::DidEndBatch(nsITransactionManager *aManager, nsresult aResult)
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{
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return NS_OK;
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}
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NS_IMETHODIMP nsInterfaceState::WillMerge(nsITransactionManager *aManager,
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nsITransaction *aTopTransaction, nsITransaction *aTransactionToMerge, PRBool *aInterrupt)
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{
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*aInterrupt = PR_FALSE;
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return NS_OK;
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}
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NS_IMETHODIMP nsInterfaceState::DidMerge(nsITransactionManager *aManager,
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nsITransaction *aTopTransaction, nsITransaction *aTransactionToMerge,
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PRBool aDidMerge, nsresult aMergeResult)
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{
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return NS_OK;
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}
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#ifdef XP_MAC
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#pragma mark -
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#endif
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nsresult nsInterfaceState::PrimeUpdateTimer()
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{
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nsresult rv = NS_OK;
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if (mUpdateTimer)
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{
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// i'd love to be able to just call SetDelay on the existing timer, but
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// i think i have to tear it down and make a new one.
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mUpdateTimer->Cancel();
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mUpdateTimer = NULL; // free it
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}
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rv = NS_NewTimer(getter_AddRefs(mUpdateTimer));
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if (NS_FAILED(rv)) return rv;
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const PRUint32 kUpdateTimerDelay = 150;
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return mUpdateTimer->Init(NS_STATIC_CAST(nsITimerCallback*, this), kUpdateTimerDelay);
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}
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void nsInterfaceState::TimerCallback()
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{
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// if the selection state has changed, update stuff
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PRBool isCollapsed = SelectionIsCollapsed();
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if (isCollapsed != mSelectionCollapsed)
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{
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CallUpdateCommands(nsAutoString("select"));
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mSelectionCollapsed = isCollapsed;
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}
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(void)ForceUpdate();
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}
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nsresult nsInterfaceState::CallUpdateCommands(const nsString& aCommand)
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{
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if (!mDOMWindow)
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{
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nsCOMPtr<nsIEditor> editor = do_QueryInterface(mEditor);
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if (!editor) return NS_ERROR_FAILURE;
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nsCOMPtr<nsIDOMDocument> domDoc;
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editor->GetDocument(getter_AddRefs(domDoc));
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if (!domDoc) return NS_ERROR_FAILURE;
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nsCOMPtr<nsIDocument> theDoc = do_QueryInterface(domDoc);
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if (!theDoc) return NS_ERROR_FAILURE;
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nsCOMPtr<nsIScriptGlobalObject> scriptGlobalObject;
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theDoc->GetScriptGlobalObject(getter_AddRefs(scriptGlobalObject));
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nsCOMPtr<nsIDOMWindow> domWindow = do_QueryInterface(scriptGlobalObject);
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if (!domWindow) return NS_ERROR_FAILURE;
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mDOMWindow = domWindow;
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}
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return mDOMWindow->UpdateCommands(aCommand);
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}
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NS_IMETHODIMP
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nsInterfaceState::ForceUpdate()
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{
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nsresult rv;
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// we don't really care if any of these fail.
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// update bold
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rv = UpdateTextState("b", "Editor:Bold", "bold", mBoldState);
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// update italic
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rv = UpdateTextState("i", "Editor:Italic", "italic", mItalicState);
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// update underline
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rv = UpdateTextState("u", "Editor:Underline", "underline", mUnderlineState);
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// update the paragraph format popup
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rv = UpdateParagraphState("Editor:Paragraph:Format", "format", mParagraphFormat);
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// udpate the font face
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rv = UpdateFontFace("Editor:Font:Face", "font", mFontString);
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// TODO: FINISH FONT FACE AND ADD FONT SIZE ("Editor:Font:Size", "fontsize", mFontSize)
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// update the list buttons
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rv = UpdateListState("Editor:Paragraph:ListType");
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return NS_OK;
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}
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PRBool
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nsInterfaceState::SelectionIsCollapsed()
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{
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nsresult rv;
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// we don't care too much about failures here.
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nsCOMPtr<nsIEditor> editor = do_QueryInterface(mEditor, &rv);
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if (NS_SUCCEEDED(rv))
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{
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nsCOMPtr<nsIDOMSelection> domSelection;
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rv = editor->GetSelection(getter_AddRefs(domSelection));
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if (NS_SUCCEEDED(rv))
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{
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PRBool selectionCollapsed = PR_FALSE;
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rv = domSelection->GetIsCollapsed(&selectionCollapsed);
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return selectionCollapsed;
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}
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}
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return PR_FALSE;
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}
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nsresult
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nsInterfaceState::UpdateParagraphState(const char* observerName, const char* attributeName, nsString& ioParaFormat)
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{
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nsStringArray tagList;
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mEditor->GetParagraphTags(&tagList);
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PRInt32 numTags = tagList.Count();
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nsAutoString thisTag;
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//Note: If numTags == 0, we probably have a text node not in a container
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// (directly under <body>). Consider it normal
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if (numTags > 0)
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{
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// This will never show the "mixed state"
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// TODO: Scan list of tags and if any are different, set to "mixed"
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tagList.StringAt(0, thisTag);
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}
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if (thisTag != mParagraphFormat)
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{
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nsresult rv = SetNodeAttribute(observerName, attributeName, thisTag);
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if (NS_FAILED(rv)) return rv;
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mParagraphFormat = thisTag;
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}
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return NS_OK;
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}
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nsresult
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nsInterfaceState::UpdateListState(const char* observerName)
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{
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nsresult rv = NS_ERROR_NO_INTERFACE;
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nsCOMPtr<nsIDOMSelection> domSelection;
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{
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nsCOMPtr<nsIEditor> editor = do_QueryInterface(mEditor);
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editor->GetSelection(getter_AddRefs(domSelection));
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}
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nsCOMPtr<nsIDOMNode> domNode;
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if (domSelection)
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domSelection->GetAnchorNode(getter_AddRefs(domNode));
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// tagStr will hold the list state when we're done.
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nsAutoString tagStr("ol");
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nsCOMPtr<nsIDOMElement> parentElement;
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rv = mEditor->GetElementOrParentByTagName(tagStr, domNode, getter_AddRefs(parentElement));
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if (NS_FAILED(rv)) return rv;
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if (!parentElement)
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{
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tagStr = "ul";
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rv = mEditor->GetElementOrParentByTagName(tagStr, domNode, getter_AddRefs(parentElement));
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if (NS_FAILED(rv)) return rv;
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if (!parentElement)
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tagStr = "";
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}
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if (tagStr != mListTag)
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{
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rv = SetNodeAttribute(observerName, "format", tagStr);
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mListTag = tagStr;
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}
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return rv;
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}
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nsresult
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nsInterfaceState::UpdateFontFace(const char* observerName, const char* attributeName, nsString& ioFontString)
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{
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nsresult rv;
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PRBool firstOfSelectionHasProp = PR_FALSE;
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PRBool anyOfSelectionHasProp = PR_FALSE;
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PRBool allOfSelectionHasProp = PR_FALSE;
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nsCOMPtr<nsIAtom> styleAtom = getter_AddRefs(NS_NewAtom("font"));
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nsAutoString faceStr("face");
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nsAutoString thisFace;
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// Use to test for "Default Fixed Width"
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nsCOMPtr<nsIAtom> fixedStyleAtom = getter_AddRefs(NS_NewAtom("tt"));
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PRBool testBoolean;
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rv = mEditor->GetInlineProperty(styleAtom, &faceStr, &thisFace, firstOfSelectionHasProp, anyOfSelectionHasProp, allOfSelectionHasProp);
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if( !anyOfSelectionHasProp )
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{
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// No font face set -- check for "tt"
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rv = mEditor->GetInlineProperty(fixedStyleAtom, nsnull, nsnull, firstOfSelectionHasProp, anyOfSelectionHasProp, allOfSelectionHasProp);
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testBoolean = anyOfSelectionHasProp;
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if (anyOfSelectionHasProp)
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thisFace = "tt";
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}
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// TODO: HANDLE "MIXED" STATE
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if (thisFace != mFontString)
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{
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rv = SetNodeAttribute(observerName, faceStr.GetBuffer(), thisFace);
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if (NS_SUCCEEDED(rv))
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mFontString = thisFace;
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}
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return rv;
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}
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nsresult
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nsInterfaceState::UpdateTextState(const char* tagName, const char* observerName, const char* attributeName, PRInt8& ioState)
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{
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nsresult rv;
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nsCOMPtr<nsIAtom> styleAtom = getter_AddRefs(NS_NewAtom(tagName));
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PRBool testBoolean;
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PRBool firstOfSelectionHasProp = PR_FALSE;
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PRBool anyOfSelectionHasProp = PR_FALSE;
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PRBool allOfSelectionHasProp = PR_FALSE;
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rv = mEditor->GetInlineProperty(styleAtom, nsnull, nsnull, firstOfSelectionHasProp, anyOfSelectionHasProp, allOfSelectionHasProp);
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testBoolean = allOfSelectionHasProp; // change this to alter the behaviour
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if (NS_FAILED(rv)) return rv;
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if (testBoolean != ioState)
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{
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rv = SetNodeAttribute(observerName, attributeName, testBoolean ? "true" : "false");
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if (NS_FAILED(rv))
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return rv;
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ioState = testBoolean;
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}
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return rv;
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}
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nsresult
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nsInterfaceState::UpdateDirtyState(PRBool aNowDirty)
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{
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if (mDirtyState != aNowDirty)
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{
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nsresult rv; // = SetNodeAttribute("Editor:Save", "disabled", aNowDirty ? "true" : "false");
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rv = SetNodeAttribute("Editor:Save", "disabled", aNowDirty ? "false" : "true");
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if (NS_FAILED(rv)) return rv;
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mDirtyState = aNowDirty;
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}
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return NS_OK;
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}
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nsresult
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nsInterfaceState::SetNodeAttribute(const char* nodeID, const char* attributeName, const nsString& newValue)
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{
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nsresult rv = NS_OK;
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if (!mChromeDoc)
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return NS_ERROR_NOT_INITIALIZED;
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nsCOMPtr<nsIDOMElement> elem;
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rv = mChromeDoc->GetElementById( nodeID, getter_AddRefs(elem) );
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if (NS_FAILED(rv) || !elem) return rv;
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return elem->SetAttribute(attributeName, newValue);
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}
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nsresult
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nsInterfaceState::UnsetNodeAttribute(const char* nodeID, const char* attributeName)
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{
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nsresult rv = NS_OK;
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if (!mChromeDoc)
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return NS_ERROR_NOT_INITIALIZED;
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nsCOMPtr<nsIDOMElement> elem;
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rv = mChromeDoc->GetElementById( nodeID, getter_AddRefs(elem) );
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if (NS_FAILED(rv) || !elem) return rv;
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return elem->RemoveAttribute(attributeName);
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}
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#ifdef XP_MAC
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#pragma mark -
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#endif
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void
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nsInterfaceState::Notify(nsITimer *timer)
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{
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NS_ASSERTION(timer == mUpdateTimer.get(), "Hey, this ain't my timer!");
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mUpdateTimer = NULL; // release my hold
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TimerCallback();
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}
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#ifdef XP_MAC
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#pragma mark -
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#endif
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nsresult NS_NewInterfaceState(nsIHTMLEditor* aEditor, nsIDOMXULDocument* aChromeDoc, nsIDOMSelectionListener** aInstancePtrResult)
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{
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nsInterfaceState* newThang = new nsInterfaceState;
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if (!newThang)
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return NS_ERROR_OUT_OF_MEMORY;
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*aInstancePtrResult = nsnull;
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nsresult rv = newThang->Init(aEditor, aChromeDoc);
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if (NS_FAILED(rv))
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{
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delete newThang;
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return rv;
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}
|
|
|
|
return newThang->QueryInterface(NS_GET_IID(nsIDOMSelectionListener), (void **)aInstancePtrResult);
|
|
}
|