177 lines
4.9 KiB
C++
177 lines
4.9 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* 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
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "nsBaseClipboard.h"
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#include "nsIClipboardOwner.h"
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#include "nsString.h"
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#include "nsIWidget.h"
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#include "nsIComponentManager.h"
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#include "nsCOMPtr.h"
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#include "nsXPCOM.h"
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#include "nsISupportsPrimitives.h"
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NS_IMPL_ADDREF(nsBaseClipboard)
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NS_IMPL_RELEASE(nsBaseClipboard)
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NS_IMPL_QUERY_INTERFACE1(nsBaseClipboard, nsIClipboard)
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//-------------------------------------------------------------------------
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//
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// nsBaseClipboard constructor
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//
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//-------------------------------------------------------------------------
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nsBaseClipboard::nsBaseClipboard()
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{
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mClipboardOwner = nsnull;
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mTransferable = nsnull;
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mIgnoreEmptyNotification = PR_FALSE;
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}
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//-------------------------------------------------------------------------
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//
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// nsBaseClipboard destructor
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//
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//-------------------------------------------------------------------------
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nsBaseClipboard::~nsBaseClipboard()
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{
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EmptyClipboard(kSelectionClipboard);
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EmptyClipboard(kGlobalClipboard);
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}
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/**
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* Sets the transferable object
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*
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*/
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NS_IMETHODIMP nsBaseClipboard::SetData(nsITransferable * aTransferable, nsIClipboardOwner * anOwner,
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PRInt32 aWhichClipboard)
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{
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NS_ASSERTION ( aTransferable, "clipboard given a null transferable" );
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if (aTransferable == mTransferable && anOwner == mClipboardOwner)
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return NS_OK;
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PRBool selectClipPresent;
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SupportsSelectionClipboard(&selectClipPresent);
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if ( !selectClipPresent && aWhichClipboard != kGlobalClipboard )
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return NS_ERROR_FAILURE;
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EmptyClipboard(aWhichClipboard);
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mClipboardOwner = anOwner;
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if ( anOwner )
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NS_ADDREF(mClipboardOwner);
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mTransferable = aTransferable;
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nsresult rv = NS_ERROR_FAILURE;
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if ( mTransferable ) {
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NS_ADDREF(mTransferable);
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rv = SetNativeClipboardData(aWhichClipboard);
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}
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return rv;
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}
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/**
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* Gets the transferable object
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*
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*/
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NS_IMETHODIMP nsBaseClipboard::GetData(nsITransferable * aTransferable, PRInt32 aWhichClipboard)
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{
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NS_ASSERTION ( aTransferable, "clipboard given a null transferable" );
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PRBool selectClipPresent;
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SupportsSelectionClipboard(&selectClipPresent);
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if ( !selectClipPresent && aWhichClipboard != kGlobalClipboard )
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return NS_ERROR_FAILURE;
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if ( aTransferable )
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return GetNativeClipboardData(aTransferable, aWhichClipboard);
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return NS_ERROR_FAILURE;
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}
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/**
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*
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*
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*/
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NS_IMETHODIMP nsBaseClipboard::EmptyClipboard(PRInt32 aWhichClipboard)
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{
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PRBool selectClipPresent;
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SupportsSelectionClipboard(&selectClipPresent);
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if ( !selectClipPresent && aWhichClipboard != kGlobalClipboard )
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return NS_ERROR_FAILURE;
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if (mIgnoreEmptyNotification)
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return NS_OK;
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if ( mClipboardOwner ) {
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mClipboardOwner->LosingOwnership(mTransferable);
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NS_RELEASE(mClipboardOwner);
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}
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NS_IF_RELEASE(mTransferable);
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return NS_OK;
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}
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/**
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*
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*
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*/
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NS_IMETHODIMP
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nsBaseClipboard :: HasDataMatchingFlavors ( nsISupportsArray* aFlavorList, PRInt32 aWhichClipboard, PRBool * outResult )
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{
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*outResult = PR_TRUE; // say we always do.
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return NS_OK;
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}
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NS_IMETHODIMP
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nsBaseClipboard :: SupportsSelectionClipboard ( PRBool *_retval )
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{
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*_retval = PR_FALSE; // we don't support the selection clipboard by default.
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return NS_OK;
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}
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