зеркало из https://github.com/mozilla/pjs.git
1696 строки
66 KiB
C++
1696 строки
66 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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* Christopher Blizzard <blizzard@mozilla.org>.
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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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* Christopher Blizzard <blizzard@mozilla.org>
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* Markus G. Kuhn <mkuhn@acm.org>
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* Richard Verhoeven <river@win.tue.nl>
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* Frank Tang <ftang@netscape.com> adopt into mozilla
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* Ginn Chen <ginn.chen@sun.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 "nsDragService.h"
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#include "nsIObserverService.h"
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#include "nsWidgetsCID.h"
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#include "nsWindow.h"
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#include "nsIServiceManager.h"
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#include "nsXPCOM.h"
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#include "nsISupportsPrimitives.h"
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#include "nsIIOService.h"
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#include "nsIFileURL.h"
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#include "nsNetUtil.h"
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#include "prlog.h"
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#include "nsTArray.h"
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#include "nsPrimitiveHelpers.h"
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#include "prtime.h"
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#include "prthread.h"
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#include <gtk/gtk.h>
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#include <gdk/gdkx.h>
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#include "nsCRT.h"
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#include "mozilla/Services.h"
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#include "gfxASurface.h"
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#include "gfxXlibSurface.h"
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#include "gfxContext.h"
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#include "nsImageToPixbuf.h"
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#include "nsPresContext.h"
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#include "nsIDocument.h"
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#include "nsISelection.h"
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#include "nsIFrame.h"
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// This sets how opaque the drag image is
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#define DRAG_IMAGE_ALPHA_LEVEL 0.5
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// These values are copied from GtkDragResult (rather than using GtkDragResult
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// directly) so that this code can be compiled against versions of GTK+ that
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// do not have GtkDragResult.
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// GtkDragResult is available from GTK+ version 2.12.
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enum {
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MOZ_GTK_DRAG_RESULT_SUCCESS,
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MOZ_GTK_DRAG_RESULT_NO_TARGET
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};
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// Some gobject functions expect functions for gpointer arguments.
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// gpointer is void* but C++ doesn't like casting functions to void*.
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template<class T> static inline gpointer
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FuncToGpointer(T aFunction)
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{
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return reinterpret_cast<gpointer>
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(reinterpret_cast<uintptr_t>
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// This cast just provides a warning if T is not a function.
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(reinterpret_cast<void (*)()>(aFunction)));
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}
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static PRLogModuleInfo *sDragLm = NULL;
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static guint sMotionEventTimerID;
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static const char gMimeListType[] = "application/x-moz-internal-item-list";
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static const char gMozUrlType[] = "_NETSCAPE_URL";
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static const char gTextUriListType[] = "text/uri-list";
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static const char gTextPlainUTF8Type[] = "text/plain;charset=utf-8";
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static void
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invisibleSourceDragBegin(GtkWidget *aWidget,
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GdkDragContext *aContext,
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gpointer aData);
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static void
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invisibleSourceDragEnd(GtkWidget *aWidget,
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GdkDragContext *aContext,
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gpointer aData);
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static gboolean
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invisibleSourceDragFailed(GtkWidget *aWidget,
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GdkDragContext *aContext,
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gint aResult,
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gpointer aData);
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static void
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invisibleSourceDragDataGet(GtkWidget *aWidget,
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GdkDragContext *aContext,
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GtkSelectionData *aSelectionData,
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guint aInfo,
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guint32 aTime,
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gpointer aData);
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nsDragService::nsDragService()
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{
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// We have to destroy the hidden widget before the event loop stops
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// running.
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nsCOMPtr<nsIObserverService> obsServ =
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mozilla::services::GetObserverService();
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obsServ->AddObserver(this, "quit-application", false);
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// our hidden source widget
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mHiddenWidget = gtk_invisible_new();
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// make sure that the widget is realized so that
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// we can use it as a drag source.
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gtk_widget_realize(mHiddenWidget);
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// hook up our internal signals so that we can get some feedback
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// from our drag source
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g_signal_connect(mHiddenWidget, "drag_begin",
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G_CALLBACK(invisibleSourceDragBegin), this);
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g_signal_connect(mHiddenWidget, "drag_data_get",
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G_CALLBACK(invisibleSourceDragDataGet), this);
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g_signal_connect(mHiddenWidget, "drag_end",
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G_CALLBACK(invisibleSourceDragEnd), this);
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// drag-failed is available from GTK+ version 2.12
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guint dragFailedID = g_signal_lookup("drag-failed",
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G_TYPE_FROM_INSTANCE(mHiddenWidget));
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if (dragFailedID) {
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g_signal_connect_closure_by_id(mHiddenWidget, dragFailedID, 0,
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g_cclosure_new(G_CALLBACK(invisibleSourceDragFailed),
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this, NULL),
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FALSE);
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}
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// set up our logging module
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if (!sDragLm)
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sDragLm = PR_NewLogModule("nsDragService");
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PR_LOG(sDragLm, PR_LOG_DEBUG, ("nsDragService::nsDragService"));
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mGrabWidget = 0;
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mTargetWidget = 0;
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mTargetDragContext = 0;
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mTargetTime = 0;
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mCanDrop = false;
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mTargetDragDataReceived = false;
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mTargetDragData = 0;
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mTargetDragDataLen = 0;
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}
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nsDragService::~nsDragService()
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{
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PR_LOG(sDragLm, PR_LOG_DEBUG, ("nsDragService::~nsDragService"));
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}
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NS_IMPL_ISUPPORTS_INHERITED2(nsDragService, nsBaseDragService,
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nsIDragSessionGTK, nsIObserver)
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// nsIObserver
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NS_IMETHODIMP
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nsDragService::Observe(nsISupports *aSubject, const char *aTopic,
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const PRUnichar *aData)
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{
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if (!nsCRT::strcmp(aTopic, "quit-application")) {
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PR_LOG(sDragLm, PR_LOG_DEBUG,
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("nsDragService::Observe(\"quit-application\")"));
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if (mHiddenWidget) {
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gtk_widget_destroy(mHiddenWidget);
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mHiddenWidget = 0;
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}
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TargetResetData();
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} else {
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NS_NOTREACHED("unexpected topic");
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return NS_ERROR_UNEXPECTED;
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}
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return NS_OK;
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}
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// Support for periodic drag events
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// http://www.whatwg.org/specs/web-apps/current-work/multipage/dnd.html#drag-and-drop-processing-model
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// and the Xdnd protocol both recommend that drag events are sent periodically,
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// but GTK does not normally provide this.
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//
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// Here GTK is periodically stimulated by copies of the most recent mouse
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// motion events so as to send drag position messages to the destination when
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// appropriate (after it has received a status event from the previous
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// message).
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//
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// (If events were sent only on the destination side then the destination
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// would have no message to which it could reply with a drag status. Without
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// sending a drag status to the source, the destination would not be able to
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// change its feedback re whether it could accept the drop, and so the
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// source's behavior on drop will not be consistent.)
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struct MotionEventData {
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MotionEventData(GtkWidget *aWidget, GdkEvent *aEvent)
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: mWidget(aWidget), mEvent(gdk_event_copy(aEvent))
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{
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MOZ_COUNT_CTOR(MotionEventData);
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g_object_ref(mWidget);
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}
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~MotionEventData()
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{
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MOZ_COUNT_DTOR(MotionEventData);
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g_object_unref(mWidget);
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gdk_event_free(mEvent);
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}
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GtkWidget *mWidget;
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GdkEvent *mEvent;
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};
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static void
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DestroyMotionEventData(gpointer data)
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{
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delete static_cast<MotionEventData*>(data);
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}
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static gboolean
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DispatchMotionEventCopy(gpointer aData)
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{
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MotionEventData *data = static_cast<MotionEventData*>(aData);
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// Clear the timer id before OnSourceGrabEventAfter is called during event dispatch.
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sMotionEventTimerID = 0;
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// If there is no longer a grab on the widget, then the drag is over and
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// there is no need to continue drag motion.
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if (gtk_grab_get_current() == data->mWidget) {
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gtk_propagate_event(data->mWidget, data->mEvent);
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}
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// Cancel this timer;
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// We've already started another if the motion event was dispatched.
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return FALSE;
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}
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static void
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OnSourceGrabEventAfter(GtkWidget *widget, GdkEvent *event, gpointer user_data)
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{
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if (event->type != GDK_MOTION_NOTIFY)
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return;
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if (sMotionEventTimerID) {
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g_source_remove(sMotionEventTimerID);
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sMotionEventTimerID = 0;
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}
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// If there is no longer a grab on the widget, then the drag motion is
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// over (though the data may not be fetched yet).
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if (gtk_grab_get_current() != widget)
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return;
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// Update the cursor position. The last of these recorded gets used for
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// the NS_DRAGDROP_END event.
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nsDragService *dragService = static_cast<nsDragService*>(user_data);
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dragService->
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SetDragEndPoint(nsIntPoint(event->motion.x_root, event->motion.y_root));
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MotionEventData *data = new MotionEventData(widget, event);
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// G_PRIORITY_DEFAULT_IDLE is lower priority than GDK's redraw idle source
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// and lower than GTK's idle source that sends drag position messages after
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// motion-notify signals.
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//
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// http://www.whatwg.org/specs/web-apps/current-work/multipage/dnd.html#drag-and-drop-processing-model
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// recommends an interval of 350ms +/- 200ms.
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sMotionEventTimerID =
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g_timeout_add_full(G_PRIORITY_DEFAULT_IDLE, 350,
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DispatchMotionEventCopy, data, DestroyMotionEventData);
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}
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// nsIDragService
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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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PR_LOG(sDragLm, PR_LOG_DEBUG, ("nsDragService::InvokeDragSession"));
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nsresult rv = nsBaseDragService::InvokeDragSession(aDOMNode,
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aArrayTransferables,
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aRegion, aActionType);
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NS_ENSURE_SUCCESS(rv, rv);
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// make sure that we have an array of transferables to use
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if (!aArrayTransferables)
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return NS_ERROR_INVALID_ARG;
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// set our reference to the transferables. this will also addref
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// the transferables since we're going to hang onto this beyond the
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// length of this call
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mSourceDataItems = aArrayTransferables;
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// get the list of items we offer for drags
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GtkTargetList *sourceList = GetSourceList();
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if (!sourceList)
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return NS_OK;
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// stored temporarily until the drag-begin signal has been received
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mSourceRegion = aRegion;
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// save our action type
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GdkDragAction action = GDK_ACTION_DEFAULT;
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if (aActionType & DRAGDROP_ACTION_COPY)
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action = (GdkDragAction)(action | GDK_ACTION_COPY);
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if (aActionType & DRAGDROP_ACTION_MOVE)
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action = (GdkDragAction)(action | GDK_ACTION_MOVE);
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if (aActionType & DRAGDROP_ACTION_LINK)
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action = (GdkDragAction)(action | GDK_ACTION_LINK);
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// Create a fake event for the drag so we can pass the time (so to speak).
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// If we don't do this, then, when the timestamp for the pending button
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// release event is used for the ungrab, the ungrab can fail due to the
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// timestamp being _earlier_ than CurrentTime.
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GdkEvent event;
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memset(&event, 0, sizeof(GdkEvent));
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event.type = GDK_BUTTON_PRESS;
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event.button.window = mHiddenWidget->window;
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event.button.time = nsWindow::GetLastUserInputTime();
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// start our drag.
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GdkDragContext *context = gtk_drag_begin(mHiddenWidget,
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sourceList,
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action,
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1,
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&event);
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mSourceRegion = nsnull;
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if (context) {
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StartDragSession();
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// GTK uses another hidden window for receiving mouse events.
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mGrabWidget = gtk_grab_get_current();
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if (mGrabWidget) {
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g_object_ref(mGrabWidget);
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// Only motion events are required but connect to
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// "event-after" as this is never blocked by other handlers.
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g_signal_connect(mGrabWidget, "event-after",
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G_CALLBACK(OnSourceGrabEventAfter), this);
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}
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// We don't have a drag end point yet.
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mEndDragPoint = nsIntPoint(-1, -1);
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}
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else {
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rv = NS_ERROR_FAILURE;
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}
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gtk_target_list_unref(sourceList);
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return rv;
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}
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bool
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nsDragService::SetAlphaPixmap(gfxASurface *aSurface,
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GdkDragContext *aContext,
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PRInt32 aXOffset,
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PRInt32 aYOffset,
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const nsIntRect& dragRect)
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{
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GdkScreen* screen = gtk_widget_get_screen(mHiddenWidget);
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// Transparent drag icons need, like a lot of transparency-related things,
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// a compositing X window manager
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if (!gdk_screen_is_composited(screen))
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return false;
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GdkColormap* alphaColormap = gdk_screen_get_rgba_colormap(screen);
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if (!alphaColormap)
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return false;
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GdkPixmap* pixmap = gdk_pixmap_new(NULL, dragRect.width, dragRect.height,
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gdk_colormap_get_visual(alphaColormap)->depth);
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if (!pixmap)
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return false;
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gdk_drawable_set_colormap(GDK_DRAWABLE(pixmap), alphaColormap);
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// Make a gfxXlibSurface wrapped around the pixmap to render on
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nsRefPtr<gfxASurface> xPixmapSurface =
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nsWindow::GetSurfaceForGdkDrawable(GDK_DRAWABLE(pixmap),
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dragRect.Size());
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if (!xPixmapSurface)
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return false;
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nsRefPtr<gfxContext> xPixmapCtx = new gfxContext(xPixmapSurface);
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// Clear it...
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xPixmapCtx->SetOperator(gfxContext::OPERATOR_CLEAR);
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xPixmapCtx->Paint();
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// ...and paint the drag image with translucency
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xPixmapCtx->SetOperator(gfxContext::OPERATOR_SOURCE);
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xPixmapCtx->SetSource(aSurface);
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xPixmapCtx->Paint(DRAG_IMAGE_ALPHA_LEVEL);
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// The drag transaction addrefs the pixmap, so we can just unref it from us here
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gtk_drag_set_icon_pixmap(aContext, alphaColormap, pixmap, NULL,
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aXOffset, aYOffset);
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g_object_unref(pixmap);
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return true;
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}
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NS_IMETHODIMP
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nsDragService::StartDragSession()
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{
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PR_LOG(sDragLm, PR_LOG_DEBUG, ("nsDragService::StartDragSession"));
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return nsBaseDragService::StartDragSession();
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}
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NS_IMETHODIMP
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nsDragService::EndDragSession(bool aDoneDrag)
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{
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PR_LOG(sDragLm, PR_LOG_DEBUG, ("nsDragService::EndDragSession %d",
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aDoneDrag));
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if (mGrabWidget) {
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g_signal_handlers_disconnect_by_func(mGrabWidget,
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FuncToGpointer(OnSourceGrabEventAfter), this);
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g_object_unref(mGrabWidget);
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mGrabWidget = NULL;
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if (sMotionEventTimerID) {
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g_source_remove(sMotionEventTimerID);
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sMotionEventTimerID = 0;
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}
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}
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// unset our drag action
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SetDragAction(DRAGDROP_ACTION_NONE);
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return nsBaseDragService::EndDragSession(aDoneDrag);
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}
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// nsIDragSession
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NS_IMETHODIMP
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nsDragService::SetCanDrop(bool aCanDrop)
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{
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PR_LOG(sDragLm, PR_LOG_DEBUG, ("nsDragService::SetCanDrop %d",
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aCanDrop));
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mCanDrop = aCanDrop;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsDragService::GetCanDrop(bool *aCanDrop)
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{
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PR_LOG(sDragLm, PR_LOG_DEBUG, ("nsDragService::GetCanDrop"));
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*aCanDrop = mCanDrop;
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return NS_OK;
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}
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// count the number of URIs in some text/uri-list format data.
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static PRUint32
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CountTextUriListItems(const char *data,
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PRUint32 datalen)
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{
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const char *p = data;
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const char *endPtr = p + datalen;
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PRUint32 count = 0;
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while (p < endPtr) {
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// skip whitespace (if any)
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while (p < endPtr && *p != '\0' && isspace(*p))
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p++;
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// if we aren't at the end of the line ...
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|
if (p != endPtr && *p != '\0' && *p != '\n' && *p != '\r')
|
|
count++;
|
|
// skip to the end of the line
|
|
while (p < endPtr && *p != '\0' && *p != '\n')
|
|
p++;
|
|
p++; // skip the actual newline as well.
|
|
}
|
|
return count;
|
|
}
|
|
|
|
// extract an item from text/uri-list formatted data and convert it to
|
|
// unicode.
|
|
static void
|
|
GetTextUriListItem(const char *data,
|
|
PRUint32 datalen,
|
|
PRUint32 aItemIndex,
|
|
PRUnichar **convertedText,
|
|
PRInt32 *convertedTextLen)
|
|
{
|
|
const char *p = data;
|
|
const char *endPtr = p + datalen;
|
|
unsigned int count = 0;
|
|
|
|
*convertedText = nsnull;
|
|
while (p < endPtr) {
|
|
// skip whitespace (if any)
|
|
while (p < endPtr && *p != '\0' && isspace(*p))
|
|
p++;
|
|
// if we aren't at the end of the line, we have a url
|
|
if (p != endPtr && *p != '\0' && *p != '\n' && *p != '\r')
|
|
count++;
|
|
// this is the item we are after ...
|
|
if (aItemIndex + 1 == count) {
|
|
const char *q = p;
|
|
while (q < endPtr && *q != '\0' && *q != '\n' && *q != '\r')
|
|
q++;
|
|
nsPrimitiveHelpers::ConvertPlatformPlainTextToUnicode(
|
|
p, q - p, convertedText, convertedTextLen);
|
|
break;
|
|
}
|
|
// skip to the end of the line
|
|
while (p < endPtr && *p != '\0' && *p != '\n')
|
|
p++;
|
|
p++; // skip the actual newline as well.
|
|
}
|
|
|
|
// didn't find the desired item, so just pass the whole lot
|
|
if (!*convertedText) {
|
|
nsPrimitiveHelpers::ConvertPlatformPlainTextToUnicode(
|
|
data, datalen, convertedText, convertedTextLen);
|
|
}
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsDragService::GetNumDropItems(PRUint32 * aNumItems)
|
|
{
|
|
PR_LOG(sDragLm, PR_LOG_DEBUG, ("nsDragService::GetNumDropItems"));
|
|
|
|
if (!mTargetWidget) {
|
|
PR_LOG(sDragLm, PR_LOG_DEBUG,
|
|
("*** warning: GetNumDropItems \
|
|
called without a valid target widget!\n"));
|
|
*aNumItems = 0;
|
|
return NS_OK;
|
|
}
|
|
|
|
bool isList = IsTargetContextList();
|
|
if (isList)
|
|
mSourceDataItems->Count(aNumItems);
|
|
else {
|
|
GdkAtom gdkFlavor = gdk_atom_intern(gTextUriListType, FALSE);
|
|
GetTargetDragData(gdkFlavor);
|
|
if (mTargetDragData) {
|
|
const char *data = reinterpret_cast<char*>(mTargetDragData);
|
|
*aNumItems = CountTextUriListItems(data, mTargetDragDataLen);
|
|
} else
|
|
*aNumItems = 1;
|
|
}
|
|
PR_LOG(sDragLm, PR_LOG_DEBUG, ("%d items", *aNumItems));
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsDragService::GetData(nsITransferable * aTransferable,
|
|
PRUint32 aItemIndex)
|
|
{
|
|
PR_LOG(sDragLm, PR_LOG_DEBUG, ("nsDragService::GetData %d", aItemIndex));
|
|
|
|
// make sure that we have a transferable
|
|
if (!aTransferable)
|
|
return NS_ERROR_INVALID_ARG;
|
|
|
|
if (!mTargetWidget) {
|
|
PR_LOG(sDragLm, PR_LOG_DEBUG,
|
|
("*** warning: GetData \
|
|
called without a valid target widget!\n"));
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
// get flavor list that includes all acceptable flavors (including
|
|
// ones obtained through conversion). Flavors are nsISupportsStrings
|
|
// so that they can be seen from JS.
|
|
nsCOMPtr<nsISupportsArray> flavorList;
|
|
nsresult rv = aTransferable->FlavorsTransferableCanImport(
|
|
getter_AddRefs(flavorList));
|
|
if (NS_FAILED(rv))
|
|
return rv;
|
|
|
|
// count the number of flavors
|
|
PRUint32 cnt;
|
|
flavorList->Count(&cnt);
|
|
unsigned int i;
|
|
|
|
// check to see if this is an internal list
|
|
bool isList = IsTargetContextList();
|
|
|
|
if (isList) {
|
|
PR_LOG(sDragLm, PR_LOG_DEBUG, ("it's a list..."));
|
|
// find a matching flavor
|
|
for (i = 0; i < cnt; ++i) {
|
|
nsCOMPtr<nsISupports> genericWrapper;
|
|
flavorList->GetElementAt(i, getter_AddRefs(genericWrapper));
|
|
nsCOMPtr<nsISupportsCString> currentFlavor;
|
|
currentFlavor = do_QueryInterface(genericWrapper);
|
|
if (!currentFlavor)
|
|
continue;
|
|
|
|
nsXPIDLCString flavorStr;
|
|
currentFlavor->ToString(getter_Copies(flavorStr));
|
|
PR_LOG(sDragLm,
|
|
PR_LOG_DEBUG,
|
|
("flavor is %s\n", (const char *)flavorStr));
|
|
// get the item with the right index
|
|
nsCOMPtr<nsISupports> genericItem;
|
|
mSourceDataItems->GetElementAt(aItemIndex,
|
|
getter_AddRefs(genericItem));
|
|
nsCOMPtr<nsITransferable> item(do_QueryInterface(genericItem));
|
|
if (!item)
|
|
continue;
|
|
|
|
nsCOMPtr<nsISupports> data;
|
|
PRUint32 tmpDataLen = 0;
|
|
PR_LOG(sDragLm, PR_LOG_DEBUG,
|
|
("trying to get transfer data for %s\n",
|
|
(const char *)flavorStr));
|
|
rv = item->GetTransferData(flavorStr,
|
|
getter_AddRefs(data),
|
|
&tmpDataLen);
|
|
if (NS_FAILED(rv)) {
|
|
PR_LOG(sDragLm, PR_LOG_DEBUG, ("failed.\n"));
|
|
continue;
|
|
}
|
|
PR_LOG(sDragLm, PR_LOG_DEBUG, ("succeeded.\n"));
|
|
rv = aTransferable->SetTransferData(flavorStr,data,tmpDataLen);
|
|
if (NS_FAILED(rv)) {
|
|
PR_LOG(sDragLm,
|
|
PR_LOG_DEBUG,
|
|
("fail to set transfer data into transferable!\n"));
|
|
continue;
|
|
}
|
|
// ok, we got the data
|
|
return NS_OK;
|
|
}
|
|
// if we got this far, we failed
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
// Now walk down the list of flavors. When we find one that is
|
|
// actually present, copy out the data into the transferable in that
|
|
// format. SetTransferData() implicitly handles conversions.
|
|
for ( i = 0; i < cnt; ++i ) {
|
|
nsCOMPtr<nsISupports> genericWrapper;
|
|
flavorList->GetElementAt(i,getter_AddRefs(genericWrapper));
|
|
nsCOMPtr<nsISupportsCString> currentFlavor;
|
|
currentFlavor = do_QueryInterface(genericWrapper);
|
|
if (currentFlavor) {
|
|
// find our gtk flavor
|
|
nsXPIDLCString flavorStr;
|
|
currentFlavor->ToString(getter_Copies(flavorStr));
|
|
GdkAtom gdkFlavor = gdk_atom_intern(flavorStr, FALSE);
|
|
PR_LOG(sDragLm, PR_LOG_DEBUG,
|
|
("looking for data in type %s, gdk flavor %ld\n",
|
|
static_cast<const char*>(flavorStr), gdkFlavor));
|
|
bool dataFound = false;
|
|
if (gdkFlavor) {
|
|
GetTargetDragData(gdkFlavor);
|
|
}
|
|
if (mTargetDragData) {
|
|
PR_LOG(sDragLm, PR_LOG_DEBUG, ("dataFound = true\n"));
|
|
dataFound = true;
|
|
}
|
|
else {
|
|
PR_LOG(sDragLm, PR_LOG_DEBUG, ("dataFound = false\n"));
|
|
|
|
// Dragging and dropping from the file manager would cause us
|
|
// to parse the source text as a nsILocalFile URL.
|
|
if ( strcmp(flavorStr, kFileMime) == 0 ) {
|
|
gdkFlavor = gdk_atom_intern(kTextMime, FALSE);
|
|
GetTargetDragData(gdkFlavor);
|
|
if (mTargetDragData) {
|
|
const char* text = static_cast<char*>(mTargetDragData);
|
|
PRUnichar* convertedText = nsnull;
|
|
PRInt32 convertedTextLen = 0;
|
|
|
|
GetTextUriListItem(text, mTargetDragDataLen, aItemIndex,
|
|
&convertedText, &convertedTextLen);
|
|
|
|
if (convertedText) {
|
|
nsCOMPtr<nsIIOService> ioService = do_GetIOService(&rv);
|
|
nsCOMPtr<nsIURI> fileURI;
|
|
nsresult rv = ioService->NewURI(NS_ConvertUTF16toUTF8(convertedText),
|
|
nsnull, nsnull, getter_AddRefs(fileURI));
|
|
if (NS_SUCCEEDED(rv)) {
|
|
nsCOMPtr<nsIFileURL> fileURL = do_QueryInterface(fileURI, &rv);
|
|
if (NS_SUCCEEDED(rv)) {
|
|
nsCOMPtr<nsIFile> file;
|
|
rv = fileURL->GetFile(getter_AddRefs(file));
|
|
if (NS_SUCCEEDED(rv)) {
|
|
// The common wrapping code at the end of
|
|
// this function assumes the data is text
|
|
// and calls text-specific operations.
|
|
// Make a secret hideout here for nsILocalFile
|
|
// objects and return early.
|
|
aTransferable->SetTransferData(flavorStr, file,
|
|
convertedTextLen);
|
|
g_free(convertedText);
|
|
return NS_OK;
|
|
}
|
|
}
|
|
}
|
|
g_free(convertedText);
|
|
}
|
|
continue;
|
|
}
|
|
}
|
|
|
|
// if we are looking for text/unicode and we fail to find it
|
|
// on the clipboard first, try again with text/plain. If that
|
|
// is present, convert it to unicode.
|
|
if ( strcmp(flavorStr, kUnicodeMime) == 0 ) {
|
|
PR_LOG(sDragLm, PR_LOG_DEBUG,
|
|
("we were looking for text/unicode... \
|
|
trying with text/plain;charset=utf-8\n"));
|
|
gdkFlavor = gdk_atom_intern(gTextPlainUTF8Type, FALSE);
|
|
GetTargetDragData(gdkFlavor);
|
|
if (mTargetDragData) {
|
|
PR_LOG(sDragLm, PR_LOG_DEBUG, ("Got textplain data\n"));
|
|
const char* castedText =
|
|
reinterpret_cast<char*>(mTargetDragData);
|
|
PRUnichar* convertedText = nsnull;
|
|
NS_ConvertUTF8toUTF16 ucs2string(castedText,
|
|
mTargetDragDataLen);
|
|
convertedText = ToNewUnicode(ucs2string);
|
|
if ( convertedText ) {
|
|
PR_LOG(sDragLm, PR_LOG_DEBUG,
|
|
("successfully converted plain text \
|
|
to unicode.\n"));
|
|
// out with the old, in with the new
|
|
g_free(mTargetDragData);
|
|
mTargetDragData = convertedText;
|
|
mTargetDragDataLen = ucs2string.Length() * 2;
|
|
dataFound = true;
|
|
} // if plain text data on clipboard
|
|
} else {
|
|
PR_LOG(sDragLm, PR_LOG_DEBUG,
|
|
("we were looking for text/unicode... \
|
|
trying again with text/plain\n"));
|
|
gdkFlavor = gdk_atom_intern(kTextMime, FALSE);
|
|
GetTargetDragData(gdkFlavor);
|
|
if (mTargetDragData) {
|
|
PR_LOG(sDragLm, PR_LOG_DEBUG, ("Got textplain data\n"));
|
|
const char* castedText =
|
|
reinterpret_cast<char*>(mTargetDragData);
|
|
PRUnichar* convertedText = nsnull;
|
|
PRInt32 convertedTextLen = 0;
|
|
nsPrimitiveHelpers::ConvertPlatformPlainTextToUnicode(
|
|
castedText, mTargetDragDataLen,
|
|
&convertedText, &convertedTextLen);
|
|
if ( convertedText ) {
|
|
PR_LOG(sDragLm, PR_LOG_DEBUG,
|
|
("successfully converted plain text \
|
|
to unicode.\n"));
|
|
// out with the old, in with the new
|
|
g_free(mTargetDragData);
|
|
mTargetDragData = convertedText;
|
|
mTargetDragDataLen = convertedTextLen * 2;
|
|
dataFound = true;
|
|
} // if plain text data on clipboard
|
|
} // if plain text flavor present
|
|
} // if plain text charset=utf-8 flavor present
|
|
} // if looking for text/unicode
|
|
|
|
// if we are looking for text/x-moz-url and we failed to find
|
|
// it on the clipboard, try again with text/uri-list, and then
|
|
// _NETSCAPE_URL
|
|
if (strcmp(flavorStr, kURLMime) == 0) {
|
|
PR_LOG(sDragLm, PR_LOG_DEBUG,
|
|
("we were looking for text/x-moz-url...\
|
|
trying again with text/uri-list\n"));
|
|
gdkFlavor = gdk_atom_intern(gTextUriListType, FALSE);
|
|
GetTargetDragData(gdkFlavor);
|
|
if (mTargetDragData) {
|
|
PR_LOG(sDragLm, PR_LOG_DEBUG,
|
|
("Got text/uri-list data\n"));
|
|
const char *data =
|
|
reinterpret_cast<char*>(mTargetDragData);
|
|
PRUnichar* convertedText = nsnull;
|
|
PRInt32 convertedTextLen = 0;
|
|
|
|
GetTextUriListItem(data, mTargetDragDataLen, aItemIndex,
|
|
&convertedText, &convertedTextLen);
|
|
|
|
if ( convertedText ) {
|
|
PR_LOG(sDragLm, PR_LOG_DEBUG,
|
|
("successfully converted \
|
|
_NETSCAPE_URL to unicode.\n"));
|
|
// out with the old, in with the new
|
|
g_free(mTargetDragData);
|
|
mTargetDragData = convertedText;
|
|
mTargetDragDataLen = convertedTextLen * 2;
|
|
dataFound = true;
|
|
}
|
|
}
|
|
else {
|
|
PR_LOG(sDragLm, PR_LOG_DEBUG,
|
|
("failed to get text/uri-list data\n"));
|
|
}
|
|
if (!dataFound) {
|
|
PR_LOG(sDragLm, PR_LOG_DEBUG,
|
|
("we were looking for text/x-moz-url...\
|
|
trying again with _NETSCAP_URL\n"));
|
|
gdkFlavor = gdk_atom_intern(gMozUrlType, FALSE);
|
|
GetTargetDragData(gdkFlavor);
|
|
if (mTargetDragData) {
|
|
PR_LOG(sDragLm, PR_LOG_DEBUG,
|
|
("Got _NETSCAPE_URL data\n"));
|
|
const char* castedText =
|
|
reinterpret_cast<char*>(mTargetDragData);
|
|
PRUnichar* convertedText = nsnull;
|
|
PRInt32 convertedTextLen = 0;
|
|
nsPrimitiveHelpers::ConvertPlatformPlainTextToUnicode(castedText, mTargetDragDataLen, &convertedText, &convertedTextLen);
|
|
if ( convertedText ) {
|
|
PR_LOG(sDragLm,
|
|
PR_LOG_DEBUG,
|
|
("successfully converted _NETSCAPE_URL \
|
|
to unicode.\n"));
|
|
// out with the old, in with the new
|
|
g_free(mTargetDragData);
|
|
mTargetDragData = convertedText;
|
|
mTargetDragDataLen = convertedTextLen * 2;
|
|
dataFound = true;
|
|
}
|
|
}
|
|
else {
|
|
PR_LOG(sDragLm, PR_LOG_DEBUG,
|
|
("failed to get _NETSCAPE_URL data\n"));
|
|
}
|
|
}
|
|
}
|
|
|
|
} // else we try one last ditch effort to find our data
|
|
|
|
if (dataFound) {
|
|
// the DOM only wants LF, so convert from MacOS line endings
|
|
// to DOM line endings.
|
|
nsLinebreakHelpers::ConvertPlatformToDOMLinebreaks(
|
|
flavorStr,
|
|
&mTargetDragData,
|
|
reinterpret_cast<int*>(&mTargetDragDataLen));
|
|
|
|
// put it into the transferable.
|
|
nsCOMPtr<nsISupports> genericDataWrapper;
|
|
nsPrimitiveHelpers::CreatePrimitiveForData(flavorStr,
|
|
mTargetDragData, mTargetDragDataLen,
|
|
getter_AddRefs(genericDataWrapper));
|
|
aTransferable->SetTransferData(flavorStr,
|
|
genericDataWrapper,
|
|
mTargetDragDataLen);
|
|
// we found one, get out of this loop!
|
|
PR_LOG(sDragLm, PR_LOG_DEBUG, ("dataFound and converted!\n"));
|
|
break;
|
|
}
|
|
} // if (currentFlavor)
|
|
} // foreach flavor
|
|
|
|
return NS_OK;
|
|
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsDragService::IsDataFlavorSupported(const char *aDataFlavor,
|
|
bool *_retval)
|
|
{
|
|
PR_LOG(sDragLm, PR_LOG_DEBUG, ("nsDragService::IsDataFlavorSupported %s",
|
|
aDataFlavor));
|
|
if (!_retval)
|
|
return NS_ERROR_INVALID_ARG;
|
|
|
|
// set this to no by default
|
|
*_retval = false;
|
|
|
|
// check to make sure that we have a drag object set, here
|
|
if (!mTargetWidget) {
|
|
PR_LOG(sDragLm, PR_LOG_DEBUG,
|
|
("*** warning: IsDataFlavorSupported \
|
|
called without a valid target widget!\n"));
|
|
return NS_OK;
|
|
}
|
|
|
|
// check to see if the target context is a list.
|
|
bool isList = IsTargetContextList();
|
|
// if it is, just look in the internal data since we are the source
|
|
// for it.
|
|
if (isList) {
|
|
PR_LOG(sDragLm, PR_LOG_DEBUG, ("It's a list.."));
|
|
PRUint32 numDragItems = 0;
|
|
// if we don't have mDataItems we didn't start this drag so it's
|
|
// an external client trying to fool us.
|
|
if (!mSourceDataItems)
|
|
return NS_OK;
|
|
mSourceDataItems->Count(&numDragItems);
|
|
for (PRUint32 itemIndex = 0; itemIndex < numDragItems; ++itemIndex) {
|
|
nsCOMPtr<nsISupports> genericItem;
|
|
mSourceDataItems->GetElementAt(itemIndex,
|
|
getter_AddRefs(genericItem));
|
|
nsCOMPtr<nsITransferable> currItem(do_QueryInterface(genericItem));
|
|
if (currItem) {
|
|
nsCOMPtr <nsISupportsArray> flavorList;
|
|
currItem->FlavorsTransferableCanExport(
|
|
getter_AddRefs(flavorList));
|
|
if (flavorList) {
|
|
PRUint32 numFlavors;
|
|
flavorList->Count( &numFlavors );
|
|
for ( PRUint32 flavorIndex = 0;
|
|
flavorIndex < numFlavors ;
|
|
++flavorIndex ) {
|
|
nsCOMPtr<nsISupports> genericWrapper;
|
|
flavorList->GetElementAt(flavorIndex,
|
|
getter_AddRefs(genericWrapper));
|
|
nsCOMPtr<nsISupportsCString> currentFlavor;
|
|
currentFlavor = do_QueryInterface(genericWrapper);
|
|
if (currentFlavor) {
|
|
nsXPIDLCString flavorStr;
|
|
currentFlavor->ToString(getter_Copies(flavorStr));
|
|
PR_LOG(sDragLm, PR_LOG_DEBUG,
|
|
("checking %s against %s\n",
|
|
(const char *)flavorStr, aDataFlavor));
|
|
if (strcmp(flavorStr, aDataFlavor) == 0) {
|
|
PR_LOG(sDragLm, PR_LOG_DEBUG,
|
|
("boioioioiooioioioing!\n"));
|
|
*_retval = true;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
// check the target context vs. this flavor, one at a time
|
|
GList *tmp;
|
|
for (tmp = mTargetDragContext->targets; tmp; tmp = tmp->next) {
|
|
/* Bug 331198 */
|
|
GdkAtom atom = GDK_POINTER_TO_ATOM(tmp->data);
|
|
gchar *name = NULL;
|
|
name = gdk_atom_name(atom);
|
|
PR_LOG(sDragLm, PR_LOG_DEBUG,
|
|
("checking %s against %s\n", name, aDataFlavor));
|
|
if (name && (strcmp(name, aDataFlavor) == 0)) {
|
|
PR_LOG(sDragLm, PR_LOG_DEBUG, ("good!\n"));
|
|
*_retval = true;
|
|
}
|
|
// check for automatic text/uri-list -> text/x-moz-url mapping
|
|
if (!*_retval &&
|
|
name &&
|
|
(strcmp(name, gTextUriListType) == 0) &&
|
|
(strcmp(aDataFlavor, kURLMime) == 0)) {
|
|
PR_LOG(sDragLm, PR_LOG_DEBUG,
|
|
("good! ( it's text/uri-list and \
|
|
we're checking against text/x-moz-url )\n"));
|
|
*_retval = true;
|
|
}
|
|
// check for automatic _NETSCAPE_URL -> text/x-moz-url mapping
|
|
if (!*_retval &&
|
|
name &&
|
|
(strcmp(name, gMozUrlType) == 0) &&
|
|
(strcmp(aDataFlavor, kURLMime) == 0)) {
|
|
PR_LOG(sDragLm, PR_LOG_DEBUG,
|
|
("good! ( it's _NETSCAPE_URL and \
|
|
we're checking against text/x-moz-url )\n"));
|
|
*_retval = true;
|
|
}
|
|
// check for auto text/plain -> text/unicode mapping
|
|
if (!*_retval &&
|
|
name &&
|
|
(strcmp(name, kTextMime) == 0) &&
|
|
((strcmp(aDataFlavor, kUnicodeMime) == 0) ||
|
|
(strcmp(aDataFlavor, kFileMime) == 0))) {
|
|
PR_LOG(sDragLm, PR_LOG_DEBUG,
|
|
("good! ( it's text plain and we're checking \
|
|
against text/unicode or application/x-moz-file)\n"));
|
|
*_retval = true;
|
|
}
|
|
g_free(name);
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
// nsIDragSessionGTK
|
|
|
|
NS_IMETHODIMP
|
|
nsDragService::TargetSetLastContext(GtkWidget *aWidget,
|
|
GdkDragContext *aContext,
|
|
guint aTime)
|
|
{
|
|
PR_LOG(sDragLm, PR_LOG_DEBUG, ("nsDragService::TargetSetLastContext"));
|
|
mTargetWidget = aWidget;
|
|
mTargetDragContext = aContext;
|
|
mTargetTime = aTime;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsDragService::TargetStartDragMotion(void)
|
|
{
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsDragService::TargetEndDragMotion(GtkWidget *aWidget,
|
|
GdkDragContext *aContext,
|
|
guint aTime)
|
|
{
|
|
PR_LOG(sDragLm, PR_LOG_DEBUG,
|
|
("nsDragService::TargetEndDragMotion %d", mCanDrop));
|
|
|
|
if (mCanDrop) {
|
|
GdkDragAction action;
|
|
// notify the dragger if we can drop
|
|
switch (mDragAction) {
|
|
case DRAGDROP_ACTION_COPY:
|
|
action = GDK_ACTION_COPY;
|
|
break;
|
|
case DRAGDROP_ACTION_LINK:
|
|
action = GDK_ACTION_LINK;
|
|
break;
|
|
default:
|
|
action = GDK_ACTION_MOVE;
|
|
break;
|
|
}
|
|
gdk_drag_status(aContext, action, aTime);
|
|
}
|
|
else {
|
|
gdk_drag_status(aContext, (GdkDragAction)0, aTime);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsDragService::TargetDataReceived(GtkWidget *aWidget,
|
|
GdkDragContext *aContext,
|
|
gint aX,
|
|
gint aY,
|
|
GtkSelectionData *aSelectionData,
|
|
guint aInfo,
|
|
guint32 aTime)
|
|
{
|
|
PR_LOG(sDragLm, PR_LOG_DEBUG, ("nsDragService::TargetDataReceived"));
|
|
TargetResetData();
|
|
mTargetDragDataReceived = true;
|
|
if (aSelectionData->length > 0) {
|
|
mTargetDragDataLen = aSelectionData->length;
|
|
mTargetDragData = g_malloc(mTargetDragDataLen);
|
|
memcpy(mTargetDragData, aSelectionData->data, mTargetDragDataLen);
|
|
}
|
|
else {
|
|
PR_LOG(sDragLm, PR_LOG_DEBUG,
|
|
("Failed to get data. selection data len was %d\n",
|
|
aSelectionData->length));
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsDragService::TargetSetTimeCallback(nsIDragSessionGTKTimeCB aCallback)
|
|
{
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
bool
|
|
nsDragService::IsTargetContextList(void)
|
|
{
|
|
bool retval = false;
|
|
|
|
// gMimeListType drags only work for drags within a single process.
|
|
// The gtk_drag_get_source_widget() function will return NULL if the
|
|
// source of the drag is another app, so we use it to check if a
|
|
// gMimeListType drop will work or not.
|
|
if (gtk_drag_get_source_widget(mTargetDragContext) == NULL)
|
|
return retval;
|
|
|
|
GList *tmp;
|
|
|
|
// walk the list of context targets and see if one of them is a list
|
|
// of items.
|
|
for (tmp = mTargetDragContext->targets; tmp; tmp = tmp->next) {
|
|
/* Bug 331198 */
|
|
GdkAtom atom = GDK_POINTER_TO_ATOM(tmp->data);
|
|
gchar *name = NULL;
|
|
name = gdk_atom_name(atom);
|
|
if (name && strcmp(name, gMimeListType) == 0)
|
|
retval = true;
|
|
g_free(name);
|
|
if (retval)
|
|
break;
|
|
}
|
|
return retval;
|
|
}
|
|
|
|
// Maximum time to wait for a "drag_received" arrived, in microseconds
|
|
#define NS_DND_TIMEOUT 500000
|
|
|
|
void
|
|
nsDragService::GetTargetDragData(GdkAtom aFlavor)
|
|
{
|
|
PR_LOG(sDragLm, PR_LOG_DEBUG, ("getting data flavor %d\n", aFlavor));
|
|
PR_LOG(sDragLm, PR_LOG_DEBUG, ("mLastWidget is %p and mLastContext is %p\n",
|
|
mTargetWidget, mTargetDragContext));
|
|
// reset our target data areas
|
|
TargetResetData();
|
|
gtk_drag_get_data(mTargetWidget, mTargetDragContext, aFlavor, mTargetTime);
|
|
|
|
PR_LOG(sDragLm, PR_LOG_DEBUG, ("about to start inner iteration."));
|
|
PRTime entryTime = PR_Now();
|
|
while (!mTargetDragDataReceived && mDoingDrag) {
|
|
// check the number of iterations
|
|
PR_LOG(sDragLm, PR_LOG_DEBUG, ("doing iteration...\n"));
|
|
PR_Sleep(20*PR_TicksPerSecond()/1000); /* sleep for 20 ms/iteration */
|
|
if (PR_Now()-entryTime > NS_DND_TIMEOUT) break;
|
|
gtk_main_iteration();
|
|
}
|
|
PR_LOG(sDragLm, PR_LOG_DEBUG, ("finished inner iteration\n"));
|
|
}
|
|
|
|
void
|
|
nsDragService::TargetResetData(void)
|
|
{
|
|
mTargetDragDataReceived = false;
|
|
// make sure to free old data if we have to
|
|
g_free(mTargetDragData);
|
|
mTargetDragData = 0;
|
|
mTargetDragDataLen = 0;
|
|
}
|
|
|
|
GtkTargetList *
|
|
nsDragService::GetSourceList(void)
|
|
{
|
|
if (!mSourceDataItems)
|
|
return NULL;
|
|
nsTArray<GtkTargetEntry*> targetArray;
|
|
GtkTargetEntry *targets;
|
|
GtkTargetList *targetList = 0;
|
|
PRUint32 targetCount = 0;
|
|
unsigned int numDragItems = 0;
|
|
|
|
mSourceDataItems->Count(&numDragItems);
|
|
|
|
// Check to see if we're dragging > 1 item.
|
|
if (numDragItems > 1) {
|
|
// as the Xdnd protocol only supports a single item (or is it just
|
|
// gtk's implementation?), we don't advertise all flavours listed
|
|
// in the nsITransferable.
|
|
|
|
// the application/x-moz-internal-item-list format, which preserves
|
|
// all information for drags within the same mozilla instance.
|
|
GdkAtom listAtom = gdk_atom_intern(gMimeListType, FALSE);
|
|
GtkTargetEntry *listTarget =
|
|
(GtkTargetEntry *)g_malloc(sizeof(GtkTargetEntry));
|
|
listTarget->target = g_strdup(gMimeListType);
|
|
listTarget->flags = 0;
|
|
/* Bug 331198 */
|
|
listTarget->info = NS_PTR_TO_UINT32(listAtom);
|
|
PR_LOG(sDragLm, PR_LOG_DEBUG,
|
|
("automatically adding target %s with id %ld\n",
|
|
listTarget->target, listAtom));
|
|
targetArray.AppendElement(listTarget);
|
|
|
|
// check what flavours are supported so we can decide what other
|
|
// targets to advertise.
|
|
nsCOMPtr<nsISupports> genericItem;
|
|
mSourceDataItems->GetElementAt(0, getter_AddRefs(genericItem));
|
|
nsCOMPtr<nsITransferable> currItem(do_QueryInterface(genericItem));
|
|
|
|
if (currItem) {
|
|
nsCOMPtr <nsISupportsArray> flavorList;
|
|
currItem->FlavorsTransferableCanExport(getter_AddRefs(flavorList));
|
|
if (flavorList) {
|
|
PRUint32 numFlavors;
|
|
flavorList->Count( &numFlavors );
|
|
for (PRUint32 flavorIndex = 0;
|
|
flavorIndex < numFlavors ;
|
|
++flavorIndex ) {
|
|
nsCOMPtr<nsISupports> genericWrapper;
|
|
flavorList->GetElementAt(flavorIndex,
|
|
getter_AddRefs(genericWrapper));
|
|
nsCOMPtr<nsISupportsCString> currentFlavor;
|
|
currentFlavor = do_QueryInterface(genericWrapper);
|
|
if (currentFlavor) {
|
|
nsXPIDLCString flavorStr;
|
|
currentFlavor->ToString(getter_Copies(flavorStr));
|
|
|
|
// check if text/x-moz-url is supported.
|
|
// If so, advertise
|
|
// text/uri-list.
|
|
if (strcmp(flavorStr, kURLMime) == 0) {
|
|
listAtom = gdk_atom_intern(gTextUriListType, FALSE);
|
|
listTarget =
|
|
(GtkTargetEntry *)g_malloc(sizeof(GtkTargetEntry));
|
|
listTarget->target = g_strdup(gTextUriListType);
|
|
listTarget->flags = 0;
|
|
/* Bug 331198 */
|
|
listTarget->info = NS_PTR_TO_UINT32(listAtom);
|
|
PR_LOG(sDragLm, PR_LOG_DEBUG,
|
|
("automatically adding target %s with \
|
|
id %ld\n", listTarget->target, listAtom));
|
|
targetArray.AppendElement(listTarget);
|
|
}
|
|
}
|
|
} // foreach flavor in item
|
|
} // if valid flavor list
|
|
} // if item is a transferable
|
|
} else if (numDragItems == 1) {
|
|
nsCOMPtr<nsISupports> genericItem;
|
|
mSourceDataItems->GetElementAt(0, getter_AddRefs(genericItem));
|
|
nsCOMPtr<nsITransferable> currItem(do_QueryInterface(genericItem));
|
|
if (currItem) {
|
|
nsCOMPtr <nsISupportsArray> flavorList;
|
|
currItem->FlavorsTransferableCanExport(getter_AddRefs(flavorList));
|
|
if (flavorList) {
|
|
PRUint32 numFlavors;
|
|
flavorList->Count( &numFlavors );
|
|
for (PRUint32 flavorIndex = 0;
|
|
flavorIndex < numFlavors ;
|
|
++flavorIndex ) {
|
|
nsCOMPtr<nsISupports> genericWrapper;
|
|
flavorList->GetElementAt(flavorIndex,
|
|
getter_AddRefs(genericWrapper));
|
|
nsCOMPtr<nsISupportsCString> currentFlavor;
|
|
currentFlavor = do_QueryInterface(genericWrapper);
|
|
if (currentFlavor) {
|
|
nsXPIDLCString flavorStr;
|
|
currentFlavor->ToString(getter_Copies(flavorStr));
|
|
// get the atom
|
|
GdkAtom atom = gdk_atom_intern(flavorStr, FALSE);
|
|
GtkTargetEntry *target =
|
|
(GtkTargetEntry *)g_malloc(sizeof(GtkTargetEntry));
|
|
target->target = g_strdup(flavorStr);
|
|
target->flags = 0;
|
|
/* Bug 331198 */
|
|
target->info = NS_PTR_TO_UINT32(atom);
|
|
PR_LOG(sDragLm, PR_LOG_DEBUG,
|
|
("adding target %s with id %ld\n",
|
|
target->target, atom));
|
|
targetArray.AppendElement(target);
|
|
// Check to see if this is text/unicode.
|
|
// If it is, add text/plain
|
|
// since we automatically support text/plain
|
|
// if we support text/unicode.
|
|
if (strcmp(flavorStr, kUnicodeMime) == 0) {
|
|
// get the atom for the unicode string
|
|
GdkAtom plainUTF8Atom =
|
|
gdk_atom_intern(gTextPlainUTF8Type, FALSE);
|
|
GtkTargetEntry *plainUTF8Target =
|
|
(GtkTargetEntry *)g_malloc(sizeof(GtkTargetEntry));
|
|
plainUTF8Target->target = g_strdup(gTextPlainUTF8Type);
|
|
plainUTF8Target->flags = 0;
|
|
/* Bug 331198 */
|
|
plainUTF8Target->info = NS_PTR_TO_UINT32(plainUTF8Atom);
|
|
PR_LOG(sDragLm, PR_LOG_DEBUG,
|
|
("automatically adding target %s with \
|
|
id %ld\n", plainUTF8Target->target, plainUTF8Atom));
|
|
targetArray.AppendElement(plainUTF8Target);
|
|
|
|
// get the atom for the ASCII string
|
|
GdkAtom plainAtom =
|
|
gdk_atom_intern(kTextMime, FALSE);
|
|
GtkTargetEntry *plainTarget =
|
|
(GtkTargetEntry *)g_malloc(sizeof(GtkTargetEntry));
|
|
plainTarget->target = g_strdup(kTextMime);
|
|
plainTarget->flags = 0;
|
|
/* Bug 331198 */
|
|
plainTarget->info = NS_PTR_TO_UINT32(plainAtom);
|
|
PR_LOG(sDragLm, PR_LOG_DEBUG,
|
|
("automatically adding target %s with \
|
|
id %ld\n", plainTarget->target, plainAtom));
|
|
targetArray.AppendElement(plainTarget);
|
|
}
|
|
// Check to see if this is the x-moz-url type.
|
|
// If it is, add _NETSCAPE_URL
|
|
// this is a type used by everybody.
|
|
if (strcmp(flavorStr, kURLMime) == 0) {
|
|
// get the atom name for it
|
|
GdkAtom urlAtom =
|
|
gdk_atom_intern(gMozUrlType, FALSE);
|
|
GtkTargetEntry *urlTarget =
|
|
(GtkTargetEntry *)g_malloc(sizeof(GtkTargetEntry));
|
|
urlTarget->target = g_strdup(gMozUrlType);
|
|
urlTarget->flags = 0;
|
|
/* Bug 331198 */
|
|
urlTarget->info = NS_PTR_TO_UINT32(urlAtom);
|
|
PR_LOG(sDragLm, PR_LOG_DEBUG,
|
|
("automatically adding target %s with \
|
|
id %ld\n", urlTarget->target, urlAtom));
|
|
targetArray.AppendElement(urlTarget);
|
|
}
|
|
}
|
|
} // foreach flavor in item
|
|
} // if valid flavor list
|
|
} // if item is a transferable
|
|
} // if it is a single item drag
|
|
|
|
// get all the elements that we created.
|
|
targetCount = targetArray.Length();
|
|
if (targetCount) {
|
|
// allocate space to create the list of valid targets
|
|
targets =
|
|
(GtkTargetEntry *)g_malloc(sizeof(GtkTargetEntry) * targetCount);
|
|
PRUint32 targetIndex;
|
|
for ( targetIndex = 0; targetIndex < targetCount; ++targetIndex) {
|
|
GtkTargetEntry *disEntry = targetArray.ElementAt(targetIndex);
|
|
// this is a string reference but it will be freed later.
|
|
targets[targetIndex].target = disEntry->target;
|
|
targets[targetIndex].flags = disEntry->flags;
|
|
targets[targetIndex].info = disEntry->info;
|
|
}
|
|
targetList = gtk_target_list_new(targets, targetCount);
|
|
// clean up the target list
|
|
for (PRUint32 cleanIndex = 0; cleanIndex < targetCount; ++cleanIndex) {
|
|
GtkTargetEntry *thisTarget = targetArray.ElementAt(cleanIndex);
|
|
g_free(thisTarget->target);
|
|
g_free(thisTarget);
|
|
}
|
|
g_free(targets);
|
|
}
|
|
return targetList;
|
|
}
|
|
|
|
void
|
|
nsDragService::SourceEndDragSession(GdkDragContext *aContext,
|
|
gint aResult)
|
|
{
|
|
// this just releases the list of data items that we provide
|
|
mSourceDataItems = nsnull;
|
|
|
|
if (!mDoingDrag)
|
|
return; // EndDragSession() was already called on drop or drag-failed
|
|
|
|
if (mEndDragPoint.x < 0) {
|
|
// We don't have a drag end point, so guess
|
|
gint x, y;
|
|
GdkDisplay* display = gdk_display_get_default();
|
|
if (display) {
|
|
gdk_display_get_pointer(display, NULL, &x, &y, NULL);
|
|
SetDragEndPoint(nsIntPoint(x, y));
|
|
}
|
|
}
|
|
|
|
// Either the drag was aborted or the drop occurred outside the app.
|
|
// The dropEffect of mDataTransfer is not updated for motion outside the
|
|
// app, but is needed for the dragend event, so set it now.
|
|
|
|
PRUint32 dropEffect;
|
|
|
|
if (aResult == MOZ_GTK_DRAG_RESULT_SUCCESS) {
|
|
|
|
// With GTK+ versions 2.10.x and prior the drag may have been
|
|
// cancelled (but no drag-failed signal would have been sent).
|
|
// aContext->dest_window will be non-NULL only if the drop was sent.
|
|
GdkDragAction action =
|
|
aContext->dest_window ? aContext->action : (GdkDragAction)0;
|
|
|
|
// Only one bit of action should be set, but, just in case someone
|
|
// does something funny, erring away from MOVE, and not recording
|
|
// unusual action combinations as NONE.
|
|
if (!action)
|
|
dropEffect = DRAGDROP_ACTION_NONE;
|
|
else if (action & GDK_ACTION_COPY)
|
|
dropEffect = DRAGDROP_ACTION_COPY;
|
|
else if (action & GDK_ACTION_LINK)
|
|
dropEffect = DRAGDROP_ACTION_LINK;
|
|
else if (action & GDK_ACTION_MOVE)
|
|
dropEffect = DRAGDROP_ACTION_MOVE;
|
|
else
|
|
dropEffect = DRAGDROP_ACTION_COPY;
|
|
|
|
} else {
|
|
|
|
dropEffect = DRAGDROP_ACTION_NONE;
|
|
|
|
if (aResult != MOZ_GTK_DRAG_RESULT_NO_TARGET) {
|
|
mUserCancelled = true;
|
|
}
|
|
}
|
|
|
|
if (mDataTransfer) {
|
|
mDataTransfer->SetDropEffectInt(dropEffect);
|
|
}
|
|
|
|
// Inform the drag session that we're ending the drag.
|
|
EndDragSession(true);
|
|
}
|
|
|
|
static void
|
|
CreateUriList(nsISupportsArray *items, gchar **text, gint *length)
|
|
{
|
|
PRUint32 i, count;
|
|
GString *uriList = g_string_new(NULL);
|
|
|
|
items->Count(&count);
|
|
for (i = 0; i < count; i++) {
|
|
nsCOMPtr<nsISupports> genericItem;
|
|
items->GetElementAt(i, getter_AddRefs(genericItem));
|
|
nsCOMPtr<nsITransferable> item;
|
|
item = do_QueryInterface(genericItem);
|
|
|
|
if (item) {
|
|
PRUint32 tmpDataLen = 0;
|
|
void *tmpData = NULL;
|
|
nsresult rv = 0;
|
|
nsCOMPtr<nsISupports> data;
|
|
rv = item->GetTransferData(kURLMime,
|
|
getter_AddRefs(data),
|
|
&tmpDataLen);
|
|
|
|
if (NS_SUCCEEDED(rv)) {
|
|
nsPrimitiveHelpers::CreateDataFromPrimitive(kURLMime,
|
|
data,
|
|
&tmpData,
|
|
tmpDataLen);
|
|
char* plainTextData = nsnull;
|
|
PRUnichar* castedUnicode = reinterpret_cast<PRUnichar*>
|
|
(tmpData);
|
|
PRInt32 plainTextLen = 0;
|
|
nsPrimitiveHelpers::ConvertUnicodeToPlatformPlainText(
|
|
castedUnicode,
|
|
tmpDataLen / 2,
|
|
&plainTextData,
|
|
&plainTextLen);
|
|
if (plainTextData) {
|
|
PRInt32 j;
|
|
|
|
// text/x-moz-url is of form url + "\n" + title.
|
|
// We just want the url.
|
|
for (j = 0; j < plainTextLen; j++)
|
|
if (plainTextData[j] == '\n' ||
|
|
plainTextData[j] == '\r') {
|
|
plainTextData[j] = '\0';
|
|
break;
|
|
}
|
|
g_string_append(uriList, plainTextData);
|
|
g_string_append(uriList, "\r\n");
|
|
// this wasn't allocated with glib
|
|
free(plainTextData);
|
|
}
|
|
if (tmpData) {
|
|
// this wasn't allocated with glib
|
|
free(tmpData);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
*text = uriList->str;
|
|
*length = uriList->len + 1;
|
|
g_string_free(uriList, FALSE); // don't free the data
|
|
}
|
|
|
|
|
|
void
|
|
nsDragService::SourceDataGet(GtkWidget *aWidget,
|
|
GdkDragContext *aContext,
|
|
GtkSelectionData *aSelectionData,
|
|
guint aInfo,
|
|
guint32 aTime)
|
|
{
|
|
PR_LOG(sDragLm, PR_LOG_DEBUG, ("nsDragService::SourceDataGet"));
|
|
GdkAtom atom = (GdkAtom)aInfo;
|
|
nsXPIDLCString mimeFlavor;
|
|
gchar *typeName = 0;
|
|
typeName = gdk_atom_name(atom);
|
|
if (!typeName) {
|
|
PR_LOG(sDragLm, PR_LOG_DEBUG, ("failed to get atom name.\n"));
|
|
return;
|
|
}
|
|
|
|
PR_LOG(sDragLm, PR_LOG_DEBUG, ("Type is %s\n", typeName));
|
|
// make a copy since |nsXPIDLCString| won't use |g_free|...
|
|
mimeFlavor.Adopt(nsCRT::strdup(typeName));
|
|
g_free(typeName);
|
|
// check to make sure that we have data items to return.
|
|
if (!mSourceDataItems) {
|
|
PR_LOG(sDragLm, PR_LOG_DEBUG, ("Failed to get our data items\n"));
|
|
return;
|
|
}
|
|
|
|
nsCOMPtr<nsISupports> genericItem;
|
|
mSourceDataItems->GetElementAt(0, getter_AddRefs(genericItem));
|
|
nsCOMPtr<nsITransferable> item;
|
|
item = do_QueryInterface(genericItem);
|
|
if (item) {
|
|
// if someone was asking for text/plain, lookup unicode instead so
|
|
// we can convert it.
|
|
bool needToDoConversionToPlainText = false;
|
|
const char* actualFlavor = mimeFlavor;
|
|
if (strcmp(mimeFlavor, kTextMime) == 0 ||
|
|
strcmp(mimeFlavor, gTextPlainUTF8Type) == 0) {
|
|
actualFlavor = kUnicodeMime;
|
|
needToDoConversionToPlainText = true;
|
|
}
|
|
// if someone was asking for _NETSCAPE_URL we need to convert to
|
|
// plain text but we also need to look for x-moz-url
|
|
else if (strcmp(mimeFlavor, gMozUrlType) == 0) {
|
|
actualFlavor = kURLMime;
|
|
needToDoConversionToPlainText = true;
|
|
}
|
|
// if someone was asking for text/uri-list we need to convert to
|
|
// plain text.
|
|
else if (strcmp(mimeFlavor, gTextUriListType) == 0) {
|
|
actualFlavor = gTextUriListType;
|
|
needToDoConversionToPlainText = true;
|
|
}
|
|
else
|
|
actualFlavor = mimeFlavor;
|
|
|
|
PRUint32 tmpDataLen = 0;
|
|
void *tmpData = NULL;
|
|
nsresult rv;
|
|
nsCOMPtr<nsISupports> data;
|
|
rv = item->GetTransferData(actualFlavor,
|
|
getter_AddRefs(data),
|
|
&tmpDataLen);
|
|
if (NS_SUCCEEDED(rv)) {
|
|
nsPrimitiveHelpers::CreateDataFromPrimitive (actualFlavor, data,
|
|
&tmpData, tmpDataLen);
|
|
// if required, do the extra work to convert unicode to plain
|
|
// text and replace the output values with the plain text.
|
|
if (needToDoConversionToPlainText) {
|
|
char* plainTextData = nsnull;
|
|
PRUnichar* castedUnicode = reinterpret_cast<PRUnichar*>
|
|
(tmpData);
|
|
PRInt32 plainTextLen = 0;
|
|
if (strcmp(mimeFlavor, gTextPlainUTF8Type) == 0) {
|
|
plainTextData =
|
|
ToNewUTF8String(
|
|
nsDependentString(castedUnicode, tmpDataLen / 2),
|
|
(PRUint32*)&plainTextLen);
|
|
} else {
|
|
nsPrimitiveHelpers::ConvertUnicodeToPlatformPlainText(
|
|
castedUnicode,
|
|
tmpDataLen / 2,
|
|
&plainTextData,
|
|
&plainTextLen);
|
|
}
|
|
if (tmpData) {
|
|
// this was not allocated using glib
|
|
free(tmpData);
|
|
tmpData = plainTextData;
|
|
tmpDataLen = plainTextLen;
|
|
}
|
|
}
|
|
if (tmpData) {
|
|
// this copies the data
|
|
gtk_selection_data_set(aSelectionData,
|
|
aSelectionData->target,
|
|
8,
|
|
(guchar *)tmpData, tmpDataLen);
|
|
// this wasn't allocated with glib
|
|
free(tmpData);
|
|
}
|
|
} else {
|
|
if (strcmp(mimeFlavor, gTextUriListType) == 0) {
|
|
// fall back for text/uri-list
|
|
gchar *uriList;
|
|
gint length;
|
|
CreateUriList(mSourceDataItems, &uriList, &length);
|
|
gtk_selection_data_set(aSelectionData,
|
|
aSelectionData->target,
|
|
8, (guchar *)uriList, length);
|
|
g_free(uriList);
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void nsDragService::SetDragIcon(GdkDragContext* aContext)
|
|
{
|
|
if (!mHasImage && !mSelection)
|
|
return;
|
|
|
|
nsIntRect dragRect;
|
|
nsPresContext* pc;
|
|
nsRefPtr<gfxASurface> surface;
|
|
DrawDrag(mSourceNode, mSourceRegion, mScreenX, mScreenY,
|
|
&dragRect, getter_AddRefs(surface), &pc);
|
|
if (!pc)
|
|
return;
|
|
|
|
PRInt32 sx = mScreenX, sy = mScreenY;
|
|
ConvertToUnscaledDevPixels(pc, &sx, &sy);
|
|
|
|
PRInt32 offsetX = sx - dragRect.x;
|
|
PRInt32 offsetY = sy - dragRect.y;
|
|
|
|
// If a popup is set as the drag image, use its widget. Otherwise, use
|
|
// the surface that DrawDrag created.
|
|
if (mDragPopup) {
|
|
GtkWidget* gtkWidget = nsnull;
|
|
nsIFrame* frame = mDragPopup->GetPrimaryFrame();
|
|
if (frame) {
|
|
// DrawDrag ensured that this is a popup frame.
|
|
nsCOMPtr<nsIWidget> widget = frame->GetNearestWidget();
|
|
if (widget) {
|
|
gtkWidget = (GtkWidget *)widget->GetNativeData(NS_NATIVE_SHELLWIDGET);
|
|
if (gtkWidget) {
|
|
OpenDragPopup();
|
|
gtk_drag_set_icon_widget(aContext, gtkWidget, offsetX, offsetY);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else if (surface) {
|
|
if (!SetAlphaPixmap(surface, aContext, offsetX, offsetY, dragRect)) {
|
|
GdkPixbuf* dragPixbuf =
|
|
nsImageToPixbuf::SurfaceToPixbuf(surface, dragRect.width, dragRect.height);
|
|
if (dragPixbuf) {
|
|
gtk_drag_set_icon_pixbuf(aContext, dragPixbuf, offsetX, offsetY);
|
|
g_object_unref(dragPixbuf);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
invisibleSourceDragBegin(GtkWidget *aWidget,
|
|
GdkDragContext *aContext,
|
|
gpointer aData)
|
|
{
|
|
PR_LOG(sDragLm, PR_LOG_DEBUG, ("invisibleSourceDragBegin"));
|
|
nsDragService *dragService = (nsDragService *)aData;
|
|
|
|
dragService->SetDragIcon(aContext);
|
|
}
|
|
|
|
static void
|
|
invisibleSourceDragDataGet(GtkWidget *aWidget,
|
|
GdkDragContext *aContext,
|
|
GtkSelectionData *aSelectionData,
|
|
guint aInfo,
|
|
guint32 aTime,
|
|
gpointer aData)
|
|
{
|
|
PR_LOG(sDragLm, PR_LOG_DEBUG, ("invisibleSourceDragDataGet"));
|
|
nsDragService *dragService = (nsDragService *)aData;
|
|
dragService->SourceDataGet(aWidget, aContext,
|
|
aSelectionData, aInfo, aTime);
|
|
}
|
|
|
|
static gboolean
|
|
invisibleSourceDragFailed(GtkWidget *aWidget,
|
|
GdkDragContext *aContext,
|
|
gint aResult,
|
|
gpointer aData)
|
|
{
|
|
PR_LOG(sDragLm, PR_LOG_DEBUG, ("invisibleSourceDragFailed %i", aResult));
|
|
nsDragService *dragService = (nsDragService *)aData;
|
|
// End the drag session now (rather than waiting for the drag-end signal)
|
|
// so that operations performed on dropEffect == none can start immediately
|
|
// rather than waiting for the drag-failed animation to finish.
|
|
dragService->SourceEndDragSession(aContext, aResult);
|
|
|
|
// We should return TRUE to disable the drag-failed animation iff the
|
|
// source performed an operation when dropEffect was none, but the handler
|
|
// of the dragend DOM event doesn't provide this information.
|
|
return FALSE;
|
|
}
|
|
|
|
static void
|
|
invisibleSourceDragEnd(GtkWidget *aWidget,
|
|
GdkDragContext *aContext,
|
|
gpointer aData)
|
|
{
|
|
PR_LOG(sDragLm, PR_LOG_DEBUG, ("invisibleSourceDragEnd"));
|
|
nsDragService *dragService = (nsDragService *)aData;
|
|
|
|
// The drag has ended. Release the hostages!
|
|
dragService->SourceEndDragSession(aContext, MOZ_GTK_DRAG_RESULT_SUCCESS);
|
|
}
|
|
|