зеркало из https://github.com/mozilla/pjs.git
309 строки
10 KiB
C++
309 строки
10 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* vim:expandtab:shiftwidth=4:tabstop=4:
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*/
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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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* Oleg Romashin <romaxa@gmail.com>.
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*
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* Contributor(s):
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* Oleg Romashin <romaxa@gmail.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 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 "qmimedata.h"
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#include "qwidget.h"
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#include "nsDragService.h"
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#include "nsISupportsPrimitives.h"
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#include "nsXPIDLString.h"
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#include "nsIDOMMouseEvent.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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nsDragService::nsDragService() : mDrag(NULL), mHiddenWidget(NULL)
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{
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}
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nsDragService::~nsDragService()
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{
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/* destructor code */
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delete mHiddenWidget;
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}
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NS_IMETHODIMP
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nsDragService::SetDropActionType( PRUint32 aActionType )
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{
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mDropAction = Qt::IgnoreAction;
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if (aActionType & DRAGDROP_ACTION_COPY)
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{
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mDropAction |= Qt::CopyAction;
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}
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if (aActionType & DRAGDROP_ACTION_MOVE)
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{
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mDropAction |= Qt::MoveAction;
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}
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if (aActionType & DRAGDROP_ACTION_LINK)
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{
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mDropAction |= Qt::LinkAction;
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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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nsDragService::SetupDragSession(
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nsISupportsArray *aTransferables,
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PRUint32 aActionType)
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{
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PRUint32 itemCount = 0;
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aTransferables->Count(&itemCount);
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if (0 == itemCount)
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{
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NS_WARNING("No items to drag?");
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return NS_ERROR_FAILURE;
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}
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if (1 != itemCount)
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{
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NS_WARNING("Dragging more than one item, cannot do (yet?)");
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return NS_ERROR_NOT_IMPLEMENTED;
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}
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SetDropActionType(aActionType);
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QMimeData *mimeData = new QMimeData;
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nsCOMPtr<nsISupports> genericItem;
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aTransferables->GetElementAt(0, getter_AddRefs(genericItem));
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nsCOMPtr<nsITransferable> transferable(do_QueryInterface(genericItem));
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if (transferable)
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{
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nsCOMPtr <nsISupportsArray> flavorList;
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transferable->FlavorsTransferableCanExport(getter_AddRefs(flavorList));
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if (flavorList)
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{
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PRUint32 flavorCount;
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flavorList->Count( &flavorCount );
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for (PRUint32 flavor=0; flavor < flavorCount; flavor++)
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{
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nsCOMPtr<nsISupports> genericWrapper;
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flavorList->GetElementAt(flavor, 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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{
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nsCOMPtr<nsISupports> data;
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PRUint32 dataLen = 0;
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nsXPIDLCString flavorStr;
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currentFlavor->ToString(getter_Copies(flavorStr));
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// Is it some flavor we think we could support?
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if (!strcmp(kURLMime, flavorStr.get())
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|| !strcmp(kURLDataMime, flavorStr.get())
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|| !strcmp(kURLDescriptionMime, flavorStr.get())
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|| !strcmp(kHTMLMime, flavorStr.get())
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|| !strcmp(kUnicodeMime, flavorStr.get())
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)
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{
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transferable->GetTransferData(flavorStr,getter_AddRefs(data),&dataLen);
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nsCOMPtr<nsISupportsString> wideString;
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wideString = do_QueryInterface(data);
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if (!wideString)
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{
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return NS_ERROR_FAILURE;
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}
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nsAutoString utf16string;
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wideString->GetData(utf16string);
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QByteArray ba((const char*) utf16string.get(), dataLen);
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mimeData->setData(flavorStr.get(), ba);
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}
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}
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}
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}
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}
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if (!mHiddenWidget) {
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mHiddenWidget = new QWidget();
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}
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mDrag = new QDrag( mHiddenWidget ); // TODO: Better drag source here?
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mDrag->setMimeData(mimeData);
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// mDrag and mimeData SHOULD NOT be destroyed. They are destroyed by QT.
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return NS_OK;
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}
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/* void invokeDragSession (in nsIDOMNode aDOMNode, in nsISupportsArray aTransferables, in nsIScriptableRegion aRegion, in unsigned long aActionType); */
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NS_IMETHODIMP
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nsDragService::InvokeDragSession(
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nsIDOMNode *aDOMNode,
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nsISupportsArray *aTransferables,
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nsIScriptableRegion *aRegion,
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PRUint32 aActionType)
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{
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nsBaseDragService::InvokeDragSession(
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aDOMNode,
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aTransferables,
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aRegion,
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aActionType);
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SetupDragSession( aTransferables, aActionType);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsDragService::ExecuteDrag()
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{
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Qt::DropAction dropAction = mDrag->exec( mDropAction );
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return NS_OK;
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}
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/* void invokeDragSessionWithImage ( nsIDOMNode DOMNode , nsISupportsArray transferableArray , nsIScriptableRegion region , PRUint32 actionType , nsIDOMNode image , PRInt32 imageX , PRInt32 imageY , nsIDOMMouseEvent dragEvent ); */
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NS_IMETHODIMP
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nsDragService::InvokeDragSessionWithImage(
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nsIDOMNode *aDOMNode,
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nsISupportsArray*aTransferables,
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nsIScriptableRegion* aRegion,
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PRUint32 aActionType,
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nsIDOMNode* aImage,
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PRInt32 aImageX,
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PRInt32 aImageY,
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nsIDOMDragEvent* aDragEvent,
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nsIDOMDataTransfer* aDataTransfer)
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{
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nsBaseDragService::InvokeDragSessionWithImage(
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aDOMNode, aTransferables,
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aRegion, aActionType,
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aImage,
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aImageX, aImageY,
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aDragEvent,
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aDataTransfer);
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SetupDragSession( aTransferables, aActionType);
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// Setup Image, and other stuff
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if (aImage)
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{
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// Use the custom image
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// (aImageX,aImageY) specifies the offset "within the image where
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// the cursor would be positioned"
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// So, convert the aImage to QPixmap and X and Y to q QPoint
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// and then:
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// mDrag->setPixmap( pixmap ) or mDrag->setDragCursor( pixmap );
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// mDrad->setHotSpot( point );
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// TODO: Not implemented yet as this cannot be currently tested
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NS_WARNING("Support for drag image not implemented");
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}
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return ExecuteDrag();
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}
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NS_IMETHODIMP
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nsDragService::InvokeDragSessionWithSelection(nsISelection* aSelection,
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nsISupportsArray* aTransferableArray,
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PRUint32 aActionType,
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nsIDOMDragEvent* aDragEvent,
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nsIDOMDataTransfer* aDataTransfer)
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{
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nsBaseDragService::InvokeDragSessionWithSelection(
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aSelection,
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aTransferableArray,
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aActionType,
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aDragEvent,
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aDataTransfer);
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SetupDragSession( aTransferableArray, aActionType);
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// Setup selection related properties
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// There is however nothing that needs to be set
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return ExecuteDrag();
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}
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/* nsIDragSession getCurrentSession (); */
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NS_IMETHODIMP
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nsDragService::GetCurrentSession(nsIDragSession **_retval)
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{
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return NS_ERROR_NOT_IMPLEMENTED;
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}
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/* void startDragSession (); */
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NS_IMETHODIMP
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nsDragService::StartDragSession()
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{
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return nsBaseDragService::StartDragSession();
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}
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/* void endDragSession (in bool aDoneDrag); */
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NS_IMETHODIMP
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nsDragService::EndDragSession(bool aDoneDrag)
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{
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return nsBaseDragService::EndDragSession(aDoneDrag);
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}
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/* void fireDragEventAtSource (in unsigned long aMsg); */
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NS_IMETHODIMP
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nsDragService::FireDragEventAtSource(PRUint32 aMsg)
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{
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return nsBaseDragService::FireDragEventAtSource(aMsg);
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}
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/* TODO: What is this? */
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NS_IMETHODIMP
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nsDragService::Suppress()
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{
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return nsBaseDragService::Suppress();
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}
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/* TODO: What is this? */
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NS_IMETHODIMP
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nsDragService::Unsuppress()
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{
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return nsBaseDragService::Unsuppress();
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}
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NS_IMETHODIMP
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nsDragService::DragMoved(PRInt32 aX, PRInt32 aY)
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{
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return nsBaseDragService::DragMoved(aX, aY);
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}
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