228 lines
7.7 KiB
C++
228 lines
7.7 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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*
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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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#include "nsDragService.h"
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#include "nsITransferable.h"
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#include "nsString.h"
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#include "nsClipboard.h"
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#include "nsIRegion.h"
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#include "nsVoidArray.h"
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#include "nsXPCOM.h"
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#include "nsISupportsPrimitives.h"
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#include "nsPrimitiveHelpers.h"
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#include "nsCOMPtr.h"
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#include "nsXPIDLString.h"
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#include "nsWidgetsCID.h"
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#include "nsPhWidgetLog.h"
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NS_IMPL_ADDREF_INHERITED(nsDragService, nsBaseDragService)
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NS_IMPL_RELEASE_INHERITED(nsDragService, nsBaseDragService)
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NS_IMPL_QUERY_INTERFACE2(nsDragService, nsIDragService, nsIDragSession)
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//-------------------------------------------------------------------------
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//
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// DragService constructor
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//
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//-------------------------------------------------------------------------
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nsDragService::nsDragService()
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{
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mDndWidget = nsnull;
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mDndEvent = nsnull;
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mNativeCtrl = nsnull;
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mflavorStr = nsnull;
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mData = nsnull;
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}
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//-------------------------------------------------------------------------
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//
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// DragService destructor
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//
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//-------------------------------------------------------------------------
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nsDragService::~nsDragService()
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{
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if( mNativeCtrl ) PtReleaseTransportCtrl( mNativeCtrl );
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if( mflavorStr ) free( mflavorStr );
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}
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NS_IMETHODIMP nsDragService::SetNativeDndData( PtWidget_t *widget, PhEvent_t *event ) {
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mDndWidget = widget;
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mDndEvent = event;
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return NS_OK;
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}
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NS_IMETHODIMP nsDragService::SetDropData( char *data, PRUint32 tmpDataLen, char *aflavorStr ) {
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mtmpDataLen = tmpDataLen;
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if( mData ) free( mData );
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mData = ( char * ) malloc( tmpDataLen );
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memcpy( mData, data, tmpDataLen );
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if( mflavorStr ) free( mflavorStr );
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mflavorStr = strdup( aflavorStr );
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return NS_OK;
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}
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//-------------------------------------------------------------------------
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NS_IMETHODIMP
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nsDragService::InvokeDragSession (nsIDOMNode *aDOMNode,
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nsISupportsArray * aArrayTransferables,
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nsIScriptableRegion * aRegion,
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PRUint32 aActionType)
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{
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#ifdef DEBUG
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printf( "nsDragService::InvokeDragSession\n" );
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#endif
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nsBaseDragService::InvokeDragSession (aDOMNode, aArrayTransferables, aRegion, aActionType);
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// make sure that we have an array of transferables to use
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if(!aArrayTransferables) return NS_ERROR_INVALID_ARG;
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nsresult rv;
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PRUint32 numItemsToDrag = 0;
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rv = aArrayTransferables->Count(&numItemsToDrag);
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if ( !numItemsToDrag )
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return NS_ERROR_FAILURE;
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PRUint32 tmpDataLen = 0;
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nsCOMPtr<nsISupports> genericDataWrapper;
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char aflavorStr[100];
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GetRawData( aArrayTransferables, getter_AddRefs( genericDataWrapper ), &tmpDataLen, aflavorStr );
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void *data;
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nsPrimitiveHelpers::CreateDataFromPrimitive ( aflavorStr, genericDataWrapper, &data, tmpDataLen );
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mNativeCtrl = PtCreateTransportCtrl( );
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static char * dupdata;
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if( dupdata ) free( dupdata );
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dupdata = (char*) calloc( 1, tmpDataLen + 4 + 100 );
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if( dupdata ) {
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*(int*)dupdata = tmpDataLen;
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strcpy( dupdata+4, aflavorStr );
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memcpy( dupdata+4+100, data, tmpDataLen );
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PtTransportType( mNativeCtrl, "Mozilla", "dnddata", 0, Ph_TRANSPORT_INLINE, "raw", dupdata, tmpDataLen+4+100, 0 );
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PtInitDnd( mNativeCtrl, mDndWidget, mDndEvent, NULL, 0 );
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}
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return NS_OK;
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}
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//-------------------------------------------------------------------------
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NS_IMETHODIMP nsDragService::GetNumDropItems (PRUint32 * aNumItems)
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{
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*aNumItems = 1;
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return NS_OK;
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}
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//-------------------------------------------------------------------------
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NS_IMETHODIMP nsDragService::GetData (nsITransferable * aTransferable, PRUint32 aItemIndex ) {
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nsresult rv = NS_ERROR_FAILURE;
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nsCOMPtr<nsISupports> genericDataWrapper;
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nsPrimitiveHelpers::CreatePrimitiveForData( mflavorStr, mData, mtmpDataLen, getter_AddRefs( genericDataWrapper ) );
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rv = aTransferable->SetTransferData( mflavorStr, genericDataWrapper, mtmpDataLen );
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return rv;
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}
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//-------------------------------------------------------------------------
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NS_IMETHODIMP nsDragService::GetRawData( nsISupportsArray* aArrayTransferables, nsISupports **data, PRUint32 *tmpDataLen, char *aflavorStr ) {
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int aItemIndex = 0;
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// get the item with the right index
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nsCOMPtr<nsISupports> genericItem;
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aArrayTransferables->GetElementAt(aItemIndex, getter_AddRefs(genericItem));
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nsCOMPtr<nsITransferable> aTransferable (do_QueryInterface(genericItem));
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// get flavor list that includes all acceptable flavors (including
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// ones obtained through conversion). Flavors are nsISupportsCStrings
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// so that they can be seen from JS.
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nsresult rv = NS_ERROR_FAILURE;
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nsCOMPtr<nsISupportsArray> flavorList;
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rv = aTransferable->FlavorsTransferableCanImport(getter_AddRefs(flavorList));
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if (NS_FAILED(rv))
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return rv;
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// count the number of flavors
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PRUint32 cnt;
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flavorList->Count (&cnt);
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unsigned int i;
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// Now walk down the list of flavors. When we find one that is
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// actually present, copy out the data into the transferable in that
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// format. SetTransferData() implicitly handles conversions.
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for ( i = 0; i < cnt; ++i ) {
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nsCOMPtr<nsISupports> genericWrapper;
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flavorList->GetElementAt(i,getter_AddRefs(genericWrapper));
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nsCOMPtr<nsISupportsCString> currentFlavor;
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currentFlavor = do_QueryInterface(genericWrapper);
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if (currentFlavor) {
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// find our gtk flavor
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nsXPIDLCString flavorStr;
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currentFlavor->ToString ( getter_Copies(flavorStr) );
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// get the item with the right index
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nsCOMPtr<nsISupports> genericItem;
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aArrayTransferables->GetElementAt( aItemIndex, getter_AddRefs(genericItem));
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nsCOMPtr<nsITransferable> item (do_QueryInterface(genericItem));
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if (item) {
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rv = item->GetTransferData(flavorStr, data, tmpDataLen);
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if( NS_SUCCEEDED( rv ) ) {
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strcpy( aflavorStr, flavorStr );
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break;
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}
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}
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}
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} // foreach flavor
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return NS_OK;
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}
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//-------------------------------------------------------------------------
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NS_IMETHODIMP nsDragService::IsDataFlavorSupported(const char *aDataFlavor, PRBool *_retval)
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{
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if (!aDataFlavor || !_retval)
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return NS_ERROR_FAILURE;
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*_retval = PR_TRUE;
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return NS_OK;
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}
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