Consider the protocol and directory capabilities for file actions like Move To/Copy To (note that this is just an initial version; adjustments must also be done for the global actions like Delete, Rename etc.)

svn path=/trunk/KDE/kdebase/apps/; revision=798658

src/CMakeLists.txt

@@ -98,6 +98,7 @@ set(dolphin_SRCS
     dolphinfileplacesview.cpp
     dolphinsettingsdialog.cpp
     draganddrophelper.cpp
+    fileitemcapabilities.cpp
     filterbar.cpp
     generalsettingspage.cpp
     generalviewsettingspage.cpp

src/dolphincontextmenu.cpp

@@ -25,6 +25,7 @@
 #include "dolphinview.h"
 #include "dolphinviewcontainer.h"
 #include "dolphin_generalsettings.h"
+#include "fileitemcapabilities.h"
 
 #include <kactioncollection.h>
 #include <kfileplacesmodel.h>
@@ -54,6 +55,7 @@ DolphinContextMenu::DolphinContextMenu(DolphinMainWindow* parent,
                                        const KFileItem& fileInfo,
                                        const KUrl& baseUrl) :
     m_mainWindow(parent),
+    m_capabilities(0),
     m_fileInfo(fileInfo),
     m_baseUrl(baseUrl),
     m_context(NoContext)
@@ -67,6 +69,8 @@ DolphinContextMenu::DolphinContextMenu(DolphinMainWindow* parent,
 
 DolphinContextMenu::~DolphinContextMenu()
 {
+    delete m_capabilities;
+    m_capabilities = 0;
 }
 
 void DolphinContextMenu::open()
@@ -193,6 +197,7 @@ void DolphinContextMenu::openItemContextMenu()
     // Insert 'Copy To' and 'Move To' sub menus
     if (DolphinSettings::instance().generalSettings()->showCopyMoveMenu()) {
         m_copyToMenu.setItems(m_selectedItems);
+        m_copyToMenu.setReadOnly(!capabilities().supportsMoving());
         m_copyToMenu.addActionsTo(popup);
         popup->addSeparator();
     }
@@ -430,7 +435,7 @@ QAction* DolphinContextMenu::createPasteAction()
         action = new QAction(KIcon("edit-paste"), i18nc("@action:inmenu", "Paste Into Folder"), this);
         const QMimeData* mimeData = QApplication::clipboard()->mimeData();
         const KUrl::List pasteData = KUrl::List::fromMimeData(mimeData);
-        action->setEnabled(!pasteData.isEmpty());
+        action->setEnabled(!pasteData.isEmpty() && capabilities().supportsWriting());
         connect(action, SIGNAL(triggered()), m_mainWindow, SLOT(pasteIntoFolder()));
     } else {
         action = m_mainWindow->actionCollection()->action(KStandardAction::name(KStandardAction::Paste));
@@ -439,4 +444,12 @@ QAction* DolphinContextMenu::createPasteAction()
     return action;
 }
 
+FileItemCapabilities& DolphinContextMenu::capabilities()
+{
+    if (m_capabilities == 0) {
+        m_capabilities = new FileItemCapabilities(m_selectedItems);
+    }
+    return *m_capabilities;
+}
+
 #include "dolphincontextmenu.moc"

src/dolphincontextmenu.h

@@ -34,6 +34,7 @@ class KMenu;
 class KFileItem;
 class QAction;
 class DolphinMainWindow;
+class FileItemCapabilities;
 
 /**
  * @brief Represents the context menu which appears when doing a right
@@ -111,6 +112,9 @@ private:
 
     QAction* createPasteAction();
 
+private:
+    FileItemCapabilities& capabilities();
+
 private:
     struct Entry
     {
@@ -130,6 +134,7 @@ private:
     };
 
     DolphinMainWindow* m_mainWindow;
+    FileItemCapabilities* m_capabilities;
     KFileItem m_fileInfo;
     KUrl m_baseUrl;
     KFileItemList m_selectedItems;

src/fileitemcapabilities.cpp

@@ -0,0 +1,60 @@
+/***************************************************************************
+ *   Copyright (C) 2008 by Peter Penz <peter.penz@gmx.at>                  *
+ *                                                                         *
+ *   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            *
+ ***************************************************************************/
+
+#include "fileitemcapabilities.h"
+
+#include <kfileitem.h>
+#include <kprotocolmanager.h>
+
+#include <QFileInfo>
+
+FileItemCapabilities::FileItemCapabilities(const KFileItemList& items) :
+    m_supportsReading(true),
+    m_supportsDeleting(true),
+    m_supportsWriting(true),
+    m_supportsMoving(true),
+    m_isLocal(true)
+{
+    QFileInfo parentDirInfo;
+    foreach (KFileItem item, items) {
+        const KUrl url = item.url();
+        m_isLocal = m_isLocal && url.isLocalFile();
+        m_supportsReading  = m_supportsReading  && KProtocolManager::supportsReading(url);
+        m_supportsDeleting = m_supportsDeleting && KProtocolManager::supportsReading(url);
+        m_supportsWriting  = m_supportsWriting  && KProtocolManager::supportsWriting(url);
+        m_supportsMoving   = m_supportsMoving   && KProtocolManager::supportsMoving(url);
+
+        // The following code has been taken from kdebase/apps/lib/konq/konq_popupmenu.cpp:
+        // For local files we can do better: check if we have write permission in parent directory
+        if (m_isLocal && (m_supportsDeleting || m_supportsMoving)) {
+            const QString directory = url.directory();
+            if (parentDirInfo.filePath() != directory) {
+                parentDirInfo.setFile(directory);
+            }
+            if (!parentDirInfo.isWritable()) {
+                m_supportsDeleting = false;
+                m_supportsMoving = false;
+            }
+        }
+    }
+}
+
+FileItemCapabilities::~FileItemCapabilities()
+{
+}

src/fileitemcapabilities.h

@@ -0,0 +1,69 @@
+/***************************************************************************
+ *   Copyright (C) 2008 by Peter Penz <peter.penz@gmx.at>                  *
+ *                                                                         *
+ *   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            *
+ ***************************************************************************/
+
+#ifndef FILEITEMCAPABILITIES_H
+#define FILEITEMCAPABILITIES_H
+
+class KFileItemList;
+
+/**
+ * @brief Provides information about the access capabilities of file items.
+ *
+ * As soon as one file item does not support a specific capability, it is
+ * marked as unsupported for all items.
+ */
+class FileItemCapabilities
+{
+public:
+    FileItemCapabilities(const KFileItemList& items);
+    virtual ~FileItemCapabilities();
+    bool supportsReading() const;
+    bool supportsDeleting() const;
+    bool supportsWriting() const;
+    bool supportsMoving() const;
+
+private:
+    bool m_supportsReading : 1;
+    bool m_supportsDeleting : 1;
+    bool m_supportsWriting : 1;
+    bool m_supportsMoving : 1;
+    bool m_isLocal : 1;
+};
+
+inline bool FileItemCapabilities::supportsReading() const
+{
+    return m_supportsReading;
+}
+
+inline bool FileItemCapabilities::supportsDeleting() const
+{
+    return m_supportsDeleting;
+}
+
+inline bool FileItemCapabilities::supportsWriting() const
+{
+    return m_supportsWriting;
+}
+
+inline bool FileItemCapabilities::supportsMoving() const
+{
+    return m_supportsMoving;
+}
+
+#endif