DolphinStatusbar: Fix background and margins for non-Breeze styles

[dolphin.git] / src / views / draganddrophelper.h

diff --git a/src/views/draganddrophelper.h b/src/views/draganddrophelper.h
index 8838648a05a9d2fdd27276c238e9a5fea99f5fd4..73043febc2ee91d70766179197c732e16af4a3ee 100644 (file)
--- a/src/views/draganddrophelper.h
+++ b/src/views/draganddrophelper.h
@@ -1,56 +1,94 @@
-/***************************************************************************
- *   Copyright (C) 2007-2011 by Peter Penz <peter.penz19@gmail.com>        *
- *   Copyright (C) 2007 by David Faure <faure@kde.org>                     *
- *                                                                         *
- *   This program is free software; you can redistribute it and/or modify  *
- *   it under the terms of the GNU General Public License as published by  *
- *   the Free Software Foundation; either version 2 of the License, or     *
- *   (at your option) any later version.                                   *
- *                                                                         *
- *   This program is distributed in the hope that it will be useful,       *
- *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
- *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
- *   GNU General Public License for more details.                          *
- *                                                                         *
- *   You should have received a copy of the GNU General Public License     *
- *   along with this program; if not, write to the                         *
- *   Free Software Foundation, Inc.,                                       *
- *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA            *
- ***************************************************************************/
+/*
+ * SPDX-FileCopyrightText: 2007-2011 Peter Penz <peter.penz19@gmail.com>
+ * SPDX-FileCopyrightText: 2007 David Faure <faure@kde.org>
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
 
 #ifndef DRAGANDDROPHELPER_H
 #define DRAGANDDROPHELPER_H
 
-#include "libdolphin_export.h"
+#include "dolphin_export.h"
 
+#include <KFileItem>
+
+#include <QList>
 #include <QString>
+#include <QUrl>
 
-class KFileItem;
-class KUrl;
 class QDropEvent;
+class QMimeData;
 class QWidget;
+namespace KIO
+{
+class DropJob;
+}
 
-class LIBDOLPHINPRIVATE_EXPORT DragAndDropHelper
+class DOLPHIN_EXPORT DragAndDropHelper
 {
 public:
     /**
-     * Handles the dropping of URLs to the given
-     * destination. A context menu with the options
-     * 'Move Here', 'Copy Here', 'Link Here' and
-     * 'Cancel' is offered to the user.
-     * @param destItem  Item of the destination. Can be 0 (KFileItem::isNull()) if
-     *                  no file-item is available for the destination. In this case
-     *                  destUrl is used as fallback. For performance reasons it is
-     *                  recommended to pass a file-item if available.
+     * Handles the dropping of URLs to the given destination. A context menu
+     * with the options 'Move Here', 'Copy Here', 'Link Here' and 'Cancel' is
+     * offered to the user. The drag destination must represent a directory or
+     * a desktop-file, otherwise the dropping gets ignored.
+     *
      * @param destUrl   URL of the item destination. Is used only if destItem::isNull()
      *                  is true.
      * @param event     Drop event.
-     * @return          Error message if dropping is not possible. If an empty string
-     *                  is returned, the dropping has been successful.
+     * @param window    Widget where the drop happened, will be used as parent of the drop menu.
+     * @return          KIO::DropJob pointer or null in case the destUrl is contained
+     *                  in the mimeData url list.
+     */
+    static KIO::DropJob *dropUrls(const QUrl &destUrl, QDropEvent *event, QWidget *window);
+
+    /**
+     * Checks if the destination supports dropping.
+     *
+     * @param destItem  The item destination.
+     * @return          True if the destination is a directory and is writable, or it's a desktop file.
+     *                  False otherwise.
+     */
+    static bool supportsDropping(const KFileItem &destItem);
+
+    /**
+     * Updates the drop action according to whether the destination supports dropping.
+     * If supportsDropping(destUrl), set dropAction = proposedAction. Otherwise, set
+     * dropAction = Qt::IgnoreAction.
+     *
+     * @param event     Drop event.
+     * @param destUrl   Destination URL.
+     */
+    static void updateDropAction(QDropEvent *event, const QUrl &destUrl);
+
+    /**
+     * @return True if destUrl is contained in the urls parameter.
+     */
+    static bool urlListMatchesUrl(const QList<QUrl> &urls, const QUrl &destUrl);
+
+    /**
+     * @return True if mimeData contains Ark's drag and drop mime types.
+     */
+    static bool isArkDndMimeType(const QMimeData *mimeData);
+    static QString arkDndServiceMimeType()
+    {
+        return QStringLiteral("application/x-kde-ark-dndextract-service");
+    }
+    static QString arkDndPathMimeType()
+    {
+        return QStringLiteral("application/x-kde-ark-dndextract-path");
+    }
+
+    /**
+     * clear the internal cache.
+     */
+    static void clearUrlListMatchesUrlCache();
+
+private:
+    /**
+     * Stores the results of the expensive checks made in urlListMatchesUrl.
      */
-    static QString dropUrls(const KFileItem& destItem,
-                            const KUrl& destUrl,
-                            QDropEvent* event);
+    static QHash<QUrl, bool> m_urlListMatchesUrlCache;
 };
 
 #endif