252 lines
7.9 KiB
C++
252 lines
7.9 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 License
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* Version 1.0 (the "NPL"); you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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//
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// Mike Pinkerton
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// Netscape Communications
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//
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// See header file for details.
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//
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// Remaining Work:
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// * only convert data to clipboard on an app switch.
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//
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#include "nsCOMPtr.h"
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#include "nsClipboard.h"
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#include "nsVoidArray.h"
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#include "nsIClipboardOwner.h"
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#include "nsString.h"
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#include "nsIFormatConverter.h"
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#include "nsMimeMapper.h"
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#include "nsIComponentManager.h"
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#include "nsISupportsPrimitives.h"
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#include "nsXPIDLString.h"
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#include <Scrap.h>
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//
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// nsClipboard constructor
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//
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nsClipboard::nsClipboard() : nsBaseClipboard()
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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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nsClipboard::~nsClipboard()
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{
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}
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//
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// SetNativeClipboardData
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//
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// Take data off the transferrable and put it on the clipboard in as many formats
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// as are registered.
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//
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// NOTE: This code could all live in ForceDataToClipboard() and this could be a NOOP.
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// If speed and large data sizes are an issue, we should move that code there and only
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// do it on an app switch.
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//
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NS_IMETHODIMP
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nsClipboard :: SetNativeClipboardData()
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{
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nsresult errCode = NS_OK;
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mIgnoreEmptyNotification = PR_TRUE;
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// make sure we have a good transferable
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if ( !mTransferable )
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return NS_ERROR_INVALID_ARG;
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nsMimeMapperMac theMapper;
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::ZeroScrap();
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// get flavor list that includes all flavors that can be written (including ones
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// obtained through conversion)
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nsCOMPtr<nsISupportsArray> flavorList;
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errCode = mTransferable->FlavorsTransferableCanExport ( getter_AddRefs(flavorList) );
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if ( NS_FAILED(errCode) )
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return NS_ERROR_FAILURE;
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// For each flavor present (either directly in the transferable or that its
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// converter knows about) put it on the clipboard. Luckily, GetTransferData()
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// handles conversions for us, so we really don't need to know if a conversion
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// is required or not.
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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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// find MacOS flavor
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ResType macOSFlavor = theMapper.MapMimeTypeToMacOSType(flavorStr);
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// get data. This takes converters into account. We don't own the data
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// so make sure not to delete it.
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void* data = nsnull;
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PRUint32 dataSize = 0;
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nsCOMPtr<nsISupports> genericDataWrapper;
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errCode = mTransferable->GetTransferData ( flavorStr, getter_AddRefs(genericDataWrapper), &dataSize );
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CreateDataFromPrimitive ( flavorStr, genericDataWrapper, &data, dataSize );
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#ifdef NS_DEBUG
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if ( NS_FAILED(errCode) ) printf("nsClipboard:: Error getting data from transferable\n");
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#endif
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// stash on clipboard
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long numBytes = ::PutScrap ( dataSize, macOSFlavor, data );
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if ( numBytes != dataSize )
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errCode = NS_ERROR_FAILURE;
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nsAllocator::Free ( data );
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}
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} // foreach flavor in transferable
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// write out the mapping data in a special flavor on the clipboard. |mappingLen|
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// includes the NULL terminator.
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short mappingLen = 0;
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const char* mapping = theMapper.ExportMapping(&mappingLen);
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long numBytes = ::PutScrap ( mappingLen, nsMimeMapperMac::MappingFlavor(), mapping );
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if ( numBytes != mappingLen )
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errCode = NS_ERROR_FAILURE;
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nsCRT::free ( NS_CONST_CAST(char*, mapping) );
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return errCode;
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} // SetNativeClipboardData
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//
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// GetNativeClipboardData
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//
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// Take data off the native clip and put it on the transferable.
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//
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NS_IMETHODIMP
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nsClipboard :: GetNativeClipboardData(nsITransferable * aTransferable)
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{
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nsresult errCode = NS_OK;
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// make sure we have a good transferable
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if ( !aTransferable )
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return NS_ERROR_INVALID_ARG;
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// get flavor list that includes all acceptable flavors (including ones obtained through
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// conversion)
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nsCOMPtr<nsISupportsArray> flavorList;
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errCode = aTransferable->FlavorsTransferableCanImport ( getter_AddRefs(flavorList) );
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if ( NS_FAILED(errCode) )
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return NS_ERROR_FAILURE;
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// create a mime mapper. It's ok for this to fail because the data may come from
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// another app which obviously wouldn't put our mime mapping data on the clipboard.
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char* mimeMapperData = nsnull;
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GetDataOffClipboard ( nsMimeMapperMac::MappingFlavor(), &mimeMapperData, nsnull );
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nsMimeMapperMac theMapper ( mimeMapperData );
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nsCRT::free ( mimeMapperData );
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//
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// Now walk down the list of flavors. When we find one that is actually on the
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// clipboard, copy out the data into the transferable in that format. SetTransferData()
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// implicitly handles conversions.
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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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// find MacOS flavor
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ResType macOSFlavor = theMapper.MapMimeTypeToMacOSType(flavorStr);
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char* clipboardData = nsnull;
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long dataSize = 0L;
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nsresult loadResult = GetDataOffClipboard ( macOSFlavor, &clipboardData, &dataSize );
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if ( NS_SUCCEEDED(loadResult) && clipboardData ) {
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// put it into the transferable
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nsCOMPtr<nsISupports> genericDataWrapper;
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CreatePrimitiveForData ( flavorStr, clipboardData, dataSize, getter_AddRefs(genericDataWrapper) );
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errCode = aTransferable->SetTransferData ( flavorStr, genericDataWrapper, dataSize );
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#ifdef NS_DEBUG
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if ( errCode != NS_OK ) printf("nsClipboard:: Error setting data into transferable\n");
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#endif
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nsCRT::free ( clipboardData );
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// we found one, get out of this loop!
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break;
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} // if flavor found on clipboard
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}
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} // foreach flavor
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return errCode;
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}
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//
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// GetDataOffClipboard
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//
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//
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nsresult
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nsClipboard :: GetDataOffClipboard ( ResType inMacFlavor, char** outData, long* outDataSize )
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{
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if ( !outData )
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return NS_ERROR_FAILURE;
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// check if it is on the clipboard
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long offsetUnused = 0;
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OSErr clipResult = ::GetScrap(NULL, inMacFlavor, &offsetUnused);
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if ( clipResult > 0 ) {
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Handle dataHand = ::NewHandle(0);
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if ( !dataHand )
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return NS_ERROR_OUT_OF_MEMORY;
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long dataSize = ::GetScrap ( dataHand, inMacFlavor, &offsetUnused );
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if ( dataSize > 0 ) {
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char* dataBuff = NS_REINTERPRET_CAST(char*, nsAllocator::Alloc(dataSize));
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if ( !dataBuff )
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return NS_ERROR_OUT_OF_MEMORY;
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::HLock(dataHand);
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::BlockMoveData ( *dataHand, dataBuff, dataSize );
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::HUnlock(dataHand);
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::DisposeHandle(dataHand);
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if ( outDataSize )
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*outDataSize = dataSize;
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*outData = dataBuff;
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}
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else {
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#ifdef NS_DEBUG
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printf("nsClipboard: Error getting data off the clipboard, #%d\n", dataSize);
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#endif
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return NS_ERROR_FAILURE;
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}
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}
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return NS_OK;
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} // GetDataOffClipboard
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