354 lines
10 KiB
C++
354 lines
10 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: NPL 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 Netscape Public License
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* Version 1.1 (the "License"); you may not use this file except in
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* compliance with the License. You may obtain a copy of the License at
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* http://www.mozilla.org/NPL/
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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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* Denis Issoupov <denis@macadamian.com>
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* John C. Griggs <johng@corel.com>
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* Dan Rosen <dr@netscape.com>
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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 NPL, 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 NPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#ifdef NDEBUG
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#define NO_DEBUG
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#endif
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#include "nsClipboard.h"
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#include "nsMime.h"
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#include "nsCOMPtr.h"
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#include "nsCRT.h"
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#include "nsString.h"
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#include "nsISupportsArray.h"
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#include "nsISupportsPrimitives.h"
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#include "nsXPIDLString.h"
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#include "nsPrimitiveHelpers.h"
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#include "nsIComponentManager.h"
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#include "nsWidgetsCID.h"
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#include <qapplication.h>
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#include <qclipboard.h>
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#include <qdragobject.h>
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// interface definitions
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static NS_DEFINE_CID(kCClipboardCID, NS_CLIPBOARD_CID);
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NS_IMPL_ISUPPORTS1(nsClipboard, nsIClipboard);
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//-------------------------------------------------------------------------
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//
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// nsClipboard constructor
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//
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//-------------------------------------------------------------------------
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nsClipboard::nsClipboard()
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{
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NS_INIT_REFCNT();
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mIgnoreEmptyNotification = PR_FALSE;
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mGlobalTransferable = nsnull;
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mSelectionTransferable = nsnull;
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mGlobalOwner = nsnull;
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mSelectionOwner = nsnull;
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}
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//-------------------------------------------------------------------------
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//
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// nsClipboard destructor
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//
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//-------------------------------------------------------------------------
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nsClipboard::~nsClipboard()
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{
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}
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NS_IMETHODIMP nsClipboard::SetNativeClipboardData(PRInt32 aWhichClipboard)
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{
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mIgnoreEmptyNotification = PR_TRUE;
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nsCOMPtr<nsITransferable> transferable(getter_AddRefs(GetTransferable(aWhichClipboard)));
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// make sure we have a good transferable
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if (nsnull == transferable) {
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#ifdef NS_DEBUG
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printf("nsClipboard::SetNativeClipboardData(): no transferable!\n");
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#endif
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return NS_ERROR_FAILURE;
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}
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// get flavor list that includes all flavors that can be written (including
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// ones obtained through conversion)
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nsCOMPtr<nsISupportsArray> flavorList;
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nsresult errCode = transferable->FlavorsTransferableCanExport(getter_AddRefs(flavorList));
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if (NS_FAILED(errCode)) {
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#ifdef NS_DEBUG
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printf("nsClipboard::SetNativeClipboardData(): no FlavorsTransferable !\n");
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#endif
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return NS_ERROR_FAILURE;
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}
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QClipboard *cb = QApplication::clipboard();
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nsMimeStore* mimeStore = new nsMimeStore();
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PRUint32 cnt;
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flavorList->Count(&cnt);
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for (PRUint32 i = 0; i < cnt; ++i) {
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nsCOMPtr<nsISupports> genericFlavor;
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flavorList->GetElementAt(i,getter_AddRefs(genericFlavor));
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nsCOMPtr<nsISupportsString> currentFlavor(do_QueryInterface(genericFlavor));
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if (currentFlavor) {
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nsXPIDLCString flavorStr;
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currentFlavor->ToString(getter_Copies(flavorStr));
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// add these types as selection targets
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PRUint32 len;
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void* data;
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nsCOMPtr<nsISupports> clip;
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transferable->GetTransferData(flavorStr,getter_AddRefs(clip),&len);
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nsPrimitiveHelpers::CreateDataFromPrimitive(flavorStr,clip,&data,len);
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mimeStore->AddFlavorData(flavorStr,data,len);
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}
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}
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cb->setData(mimeStore);
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mIgnoreEmptyNotification = PR_FALSE;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsClipboard::GetNativeClipboardData(nsITransferable *aTransferable,
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PRInt32 aWhichClipboard)
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{
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// make sure we have a good transferable
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if (nsnull == aTransferable) {
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#ifdef NS_DEBUG
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printf(" GetNativeClipboardData: Transferable is null!\n");
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#endif
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return NS_ERROR_FAILURE;
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}
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// get flavor list that includes all acceptable flavors (including
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// ones obtained through conversion)
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nsCOMPtr<nsISupportsArray> flavorList;
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nsresult errCode = aTransferable->FlavorsTransferableCanImport(getter_AddRefs(flavorList));
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if (NS_FAILED(errCode)) {
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#ifdef NS_DEBUG
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printf("nsClipboard::GetNativeClipboardData(): no FlavorsTransferable %i !\n",
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errCode);
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#endif
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return NS_ERROR_FAILURE;
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}
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QClipboard *cb = QApplication::clipboard();
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QMimeSource *ms = cb->data();
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// Walk through flavors and see which flavor matches the one being pasted:
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PRUint32 cnt;
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flavorList->Count(&cnt);
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nsCAutoString foundFlavor;
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for (PRUint32 i = 0; i < cnt; ++i) {
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nsCOMPtr<nsISupports> genericFlavor;
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flavorList->GetElementAt(i,getter_AddRefs(genericFlavor));
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nsCOMPtr<nsISupportsString> currentFlavor(do_QueryInterface(genericFlavor));
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if (currentFlavor) {
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nsXPIDLCString flavorStr;
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currentFlavor->ToString(getter_Copies(flavorStr));
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foundFlavor = nsCAutoString(flavorStr);
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if (ms->provides((const char*)flavorStr)) {
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QByteArray ba = ms->encodedData((const char*)flavorStr);
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nsCOMPtr<nsISupports> genericDataWrapper;
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PRUint32 len = (PRUint32)ba.count();
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nsPrimitiveHelpers::CreatePrimitiveForData(foundFlavor.get(),
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(void*)ba.data(),len,
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getter_AddRefs(genericDataWrapper));
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aTransferable->SetTransferData(foundFlavor.get(),genericDataWrapper,len);
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}
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}
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}
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return NS_OK;
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}
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NS_IMETHODIMP nsClipboard::ForceDataToClipboard(PRInt32 aWhichClipboard)
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{
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// make sure we have a good transferable
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nsCOMPtr<nsITransferable> transferable(getter_AddRefs(GetTransferable(aWhichClipboard)));
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if (nsnull == transferable) {
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return NS_ERROR_FAILURE;
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}
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return NS_OK;
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}
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/* inline */
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nsITransferable *nsClipboard::GetTransferable(PRInt32 aWhichClipboard)
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{
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nsITransferable *transferable = nsnull;
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switch (aWhichClipboard) {
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case kGlobalClipboard:
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transferable = mGlobalTransferable;
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break;
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case kSelectionClipboard:
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transferable = mSelectionTransferable;
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break;
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}
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NS_IF_ADDREF(transferable);
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return transferable;
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}
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//-------------------------------------------------------------------------
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NS_IMETHODIMP nsClipboard::HasDataMatchingFlavors(nsISupportsArray *aFlavorList,
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PRInt32 aWhichClipboard,
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PRBool *_retval)
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{
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*_retval = PR_FALSE;
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if (aWhichClipboard != kGlobalClipboard)
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return NS_OK;
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QClipboard *cb = QApplication::clipboard();
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QMimeSource *ms = cb->data();
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PRUint32 cnt;
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aFlavorList->Count(&cnt);
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for (PRUint32 i = 0;i < cnt; ++i) {
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nsCOMPtr<nsISupports> genericFlavor;
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aFlavorList->GetElementAt(i,getter_AddRefs(genericFlavor));
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nsCOMPtr<nsISupportsString> currentFlavor(do_QueryInterface(genericFlavor));
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if (currentFlavor) {
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nsXPIDLCString flavorStr;
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currentFlavor->ToString(getter_Copies(flavorStr));
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#ifdef NS_DEBUG
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if (strcmp(flavorStr,kTextMime) == 0)
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NS_WARNING("DO NOT USE THE text/plain DATA FLAVOR ANY MORE. USE text/unicode INSTEAD");
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#endif
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if (ms->provides((const char*)flavorStr)) {
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*_retval = PR_TRUE;
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#ifdef NS_DEBUG
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printf("GetFormat %s\n",(const char*)flavorStr);
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#endif
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break;
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}
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}
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}
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return NS_OK;
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}
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/**
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* Sets the transferable object
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*/
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NS_IMETHODIMP nsClipboard::SetData(nsITransferable *aTransferable,
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nsIClipboardOwner *anOwner,
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PRInt32 aWhichClipboard)
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{
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if ((aTransferable == mGlobalTransferable.get()
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&& anOwner == mGlobalOwner.get()
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&& aWhichClipboard == kGlobalClipboard)
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|| (aTransferable == mSelectionTransferable.get()
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&& anOwner == mSelectionOwner.get()
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&& aWhichClipboard == kSelectionClipboard)) {
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return NS_OK;
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}
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EmptyClipboard(aWhichClipboard);
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switch (aWhichClipboard) {
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case kSelectionClipboard:
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mSelectionOwner = anOwner;
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mSelectionTransferable = aTransferable;
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break;
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case kGlobalClipboard:
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mGlobalOwner = anOwner;
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mGlobalTransferable = aTransferable;
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break;
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}
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QApplication::clipboard()->clear();
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return SetNativeClipboardData(aWhichClipboard);
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}
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/**
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* Gets the transferable object
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*/
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NS_IMETHODIMP nsClipboard::GetData(nsITransferable *aTransferable,PRInt32 aWhichClipboard)
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{
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if (nsnull != aTransferable) {
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return GetNativeClipboardData(aTransferable,aWhichClipboard);
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#ifdef NS_DEBUG
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} else {
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printf(" nsClipboard::GetData(), aTransferable is NULL.\n");
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#endif
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}
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return NS_ERROR_FAILURE;
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}
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NS_IMETHODIMP nsClipboard::EmptyClipboard(PRInt32 aWhichClipboard)
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{
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if (mIgnoreEmptyNotification) {
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return NS_OK;
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}
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switch(aWhichClipboard) {
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case kSelectionClipboard:
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if (mSelectionOwner) {
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mSelectionOwner->LosingOwnership(mSelectionTransferable);
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mSelectionOwner = nsnull;
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}
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mSelectionTransferable = nsnull;
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break;
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case kGlobalClipboard:
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if (mGlobalOwner) {
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mGlobalOwner->LosingOwnership(mGlobalTransferable);
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mGlobalOwner = nsnull;
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}
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mGlobalTransferable = nsnull;
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break;
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}
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return NS_OK;
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}
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NS_IMETHODIMP nsClipboard::SupportsSelectionClipboard(PRBool *_retval)
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{
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NS_ENSURE_ARG_POINTER(_retval);
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*_retval = PR_TRUE; // we support the selection clipboard on unix.
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return NS_OK;
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}
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