Cocoa: Implement Drag-and-Drop.

Implement drag and drop support for drags originating
from outside Qt. Port mime and pasteboard code from
Qt 4. Use QSimpleDrag from from platform support to
implement internal Qt drags.

Change-Id: I5b664a95ebb00f48de2bd21c24dfb579af16123e
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@nokia.com>

1 files changed, 99 insertions, 0 deletions

diff --git a/src/plugins/platforms/cocoa/qcocoadrag.mm b/src/plugins/platforms/cocoa/qcocoadrag.mm
new file mode 100644
index 0000000000..c596e3fdbb
--- /dev/null
+++ b/src/plugins/platforms/cocoa/qcocoadrag.mm
@@ -0,0 +1,99 @@
+/****************************************************************************
+**
+** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/
+**
+** This file is part of the plugins of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** GNU Lesser General Public License Usage
+** This file may be used under the terms of the GNU Lesser General Public
+** License version 2.1 as published by the Free Software Foundation and
+** appearing in the file LICENSE.LGPL included in the packaging of this
+** file. Please review the following information to ensure the GNU Lesser
+** General Public License version 2.1 requirements will be met:
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights. These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU General
+** Public License version 3.0 as published by the Free Software Foundation
+** and appearing in the file LICENSE.GPL included in the packaging of this
+** file. Please review the following information to ensure the GNU General
+** Public License version 3.0 requirements will be met:
+** http://www.gnu.org/copyleft/gpl.html.
+**
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qcocoadrag.h"
+#include "qmacmime.h"
+#include "qmacclipboard.h"
+
+QT_BEGIN_NAMESPACE
+
+QCocoaDropData::QCocoaDropData(NSPasteboard *pasteboard)
+{
+    dropPasteboard = reinterpret_cast<CFStringRef>(const_cast<const NSString *>([pasteboard name]));
+    CFRetain(dropPasteboard);
+}
+
+QCocoaDropData::~QCocoaDropData()
+{
+    CFRelease(dropPasteboard);
+}
+
+QStringList QCocoaDropData::formats_sys() const
+{
+    QStringList formats;
+    PasteboardRef board;
+    if (PasteboardCreate(dropPasteboard, &board) != noErr) {
+        qDebug("DnD: Cannot get PasteBoard!");
+        return formats;
+    }
+    formats = QMacPasteboard(board, QMacPasteboardMime::MIME_DND).formats();
+    return formats;
+}
+
+QVariant QCocoaDropData::retrieveData_sys(const QString &mimeType, QVariant::Type type) const
+{
+    QVariant data;
+    PasteboardRef board;
+    if (PasteboardCreate(dropPasteboard, &board) != noErr) {
+        qDebug("DnD: Cannot get PasteBoard!");
+        return data;
+    }
+    data = QMacPasteboard(board, QMacPasteboardMime::MIME_DND).retrieveData(mimeType, type);
+    CFRelease(board);
+    return data;
+}
+
+bool QCocoaDropData::hasFormat_sys(const QString &mimeType) const
+{
+    bool has = false;
+    PasteboardRef board;
+    if (PasteboardCreate(dropPasteboard, &board) != noErr) {
+        qDebug("DnD: Cannot get PasteBoard!");
+        return has;
+    }
+    has = QMacPasteboard(board, QMacPasteboardMime::MIME_DND).hasFormat(mimeType);
+    CFRelease(board);
+    return has;
+}
+
+
+QT_END_NAMESPACE
+