replace list.count() > 0 by !list.isEmpty()

[dolphin.git] / src / draganddrophelper.cpp

diff --git a/src/draganddrophelper.cpp b/src/draganddrophelper.cpp
index ab674cd5cdb79551cd10de44a521fbd57c4b75e8..637117a2b72a3af586dcc614173271fbb9969aa1 100644 (file)
--- a/src/draganddrophelper.cpp
+++ b/src/draganddrophelper.cpp
@@ -1,5 +1,6 @@
 /***************************************************************************
  *   Copyright (C) 2007 by Peter Penz <peter.penz@gmx.at>                  *
+ *   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  *
@@ -19,23 +20,60 @@
 
 #include "draganddrophelper.h"
 #include "dolphiniconsview.h"
+#include "dolphincontroller.h"
 
 #include <kdirmodel.h>
+#include <kfileitem.h>
 #include <kicon.h>
+#include <klocale.h>
+#include <kdebug.h>
+#include <konq_operations.h>
 
 #include <QAbstractItemView>
 #include <QAbstractProxyModel>
+#include <QtDBus>
 #include <QDrag>
 
-void DragAndDropHelper::startDrag(QAbstractItemView* itemView, Qt::DropActions supportedActions)
+class DragAndDropHelperSingleton
 {
+public:
+    DragAndDropHelper instance;
+};
+K_GLOBAL_STATIC(DragAndDropHelperSingleton, s_dragAndDropHelper)
+
+DragAndDropHelper& DragAndDropHelper::instance()
+{
+    return s_dragAndDropHelper->instance;
+}
+
+bool DragAndDropHelper::isMimeDataSupported(const QMimeData* mimeData) const
+{
+    return mimeData->hasUrls() || mimeData->hasFormat("application/x-kde-dndextract");
+}
+
+void DragAndDropHelper::startDrag(QAbstractItemView* itemView,
+                                  Qt::DropActions supportedActions,
+                                  DolphinController* controller)
+{
+    // Do not start a new drag until the previous one has been finished.
+    // This is a (possibly temporary) fix for bug #187884.
+    static bool isDragging = false;
+    if (isDragging) {
+        return;
+    }
+    isDragging = true;
+
     QModelIndexList indexes = itemView->selectionModel()->selectedIndexes();
-    if (indexes.count() > 0) {
+    if (!indexes.isEmpty()) {
         QMimeData *data = itemView->model()->mimeData(indexes);
         if (data == 0) {
             return;
         }
 
+        if (controller != 0) {
+            controller->emitHideToolTip();
+        }
+
         QDrag* drag = new QDrag(itemView);
         QPixmap pixmap;
         if (indexes.count() == 1) {
@@ -50,6 +88,52 @@ void DragAndDropHelper::startDrag(QAbstractItemView* itemView, Qt::DropActions s
         }
         drag->setPixmap(pixmap);
         drag->setMimeData(data);
+
+        m_dragSource = itemView;
         drag->exec(supportedActions, Qt::IgnoreAction);
+        m_dragSource = 0;
     }
+    isDragging = false;
 }
+
+bool DragAndDropHelper::isDragSource(QAbstractItemView* itemView)
+{
+    return (m_dragSource != 0) && (m_dragSource == itemView);
+}
+
+void DragAndDropHelper::dropUrls(const KFileItem& destItem,
+                                 const KUrl& destPath,
+                                 QDropEvent* event,
+                                 QWidget* widget)
+{
+    const bool dropToItem = !destItem.isNull() && (destItem.isDir() || destItem.isDesktopFile());
+    const KUrl destination = dropToItem ? destItem.url() : destPath;
+
+    const QMimeData* mimeData = event->mimeData();
+    if (mimeData->hasFormat("application/x-kde-dndextract")) {
+        QString remoteDBusClient = mimeData->data("application/x-kde-dndextract");
+        QDBusMessage message = QDBusMessage::createMethodCall(remoteDBusClient, "/DndExtract",
+                                                              "org.kde.DndExtract", "extractSelectedFilesTo");
+        message.setArguments(QVariantList() << destination.path());
+        QDBusConnection::sessionBus().call(message);
+    } else {
+        const KUrl::List urls = KUrl::List::fromMimeData(event->mimeData());
+        const int urlsCount = urls.count();
+        if (urlsCount == 0) {
+            // TODO: handle dropping of other data
+        } else if ((urlsCount == 1) && (urls.first() == destination)) {
+            emit errorMessage(i18nc("@info:status", "A folder cannot be dropped into itself"));
+        } else if (dropToItem) {
+            KonqOperations::doDrop(destItem, destination, event, widget);
+        } else {
+            KonqOperations::doDrop(KFileItem(), destination, event, widget);
+        }
+    }
+}
+
+DragAndDropHelper::DragAndDropHelper()
+    : m_dragSource(0)
+{
+}
+
+#include "draganddrophelper.moc"