1 files changed, 87 insertions, 0 deletions
diff --git a/src/views/dolphindetailsviewexpander.cpp b/src/views/dolphindetailsviewexpander.cpp
new file mode 100644
index 000000000..0f3d3fde1
--- /dev/null
+++ b/src/views/dolphindetailsviewexpander.cpp
@@ -0,0 +1,87 @@
+/***************************************************************************
+ *   Copyright (C) 2009 by Frank Reininghaus ([email protected])    *
+ *                                                                         *
+ *   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 "dolphindetailsviewexpander.h"
+
+#include "dolphindetailsview.h"
+#include "dolphinmodel.h"
+#include "dolphinsortfilterproxymodel.h"
+
+#include <kdirlister.h>
+#include <kdirmodel.h>
+
+DolphinDetailsViewExpander::DolphinDetailsViewExpander(DolphinDetailsView* parent,
+                                                       const QSet<KUrl>& urlsToExpand) :
+    QObject(parent),
+    m_detailsView(parent),
+    m_dirLister(0),
+    m_dolphinModel(0),
+    m_proxyModel(0)
+{
+    Q_ASSERT(parent != 0);
+
+    m_proxyModel = qobject_cast<const DolphinSortFilterProxyModel*>(parent->model());
+    Q_ASSERT(m_proxyModel != 0);
+
+    m_dolphinModel = qobject_cast<const DolphinModel*>(m_proxyModel->sourceModel());
+    Q_ASSERT(m_dolphinModel != 0);
+
+    m_dirLister = m_dolphinModel->dirLister();
+    Q_ASSERT(m_dirLister != 0);
+
+    // The URLs must be sorted. E.g. /home/user/ cannot be expanded before /home/
+    // because it is not known to the dir model before.
+    m_urlsToExpand = urlsToExpand.toList();
+    qSort(m_urlsToExpand);
+
+    // The dir lister must have completed the folder listing before a subfolder can be expanded.
+    connect(m_dirLister, SIGNAL(completed()), this, SLOT(slotDirListerCompleted()));
+}
+
+DolphinDetailsViewExpander::~DolphinDetailsViewExpander()
+{
+}
+
+void DolphinDetailsViewExpander::stop()
+{
+    disconnect(m_dirLister, SIGNAL(completed()), this, SLOT(slotDirListerCompleted()));
+    deleteLater();
+}
+
+void DolphinDetailsViewExpander::slotDirListerCompleted()
+{
+    QModelIndex dirIndex;
+
+    while(!m_urlsToExpand.isEmpty() && !dirIndex.isValid()) {
+        const KUrl url = m_urlsToExpand.takeFirst();
+        dirIndex = m_dolphinModel->indexForUrl(url);
+    }
+
+    if(dirIndex.isValid()) {
+        // A valid model index was found. Note that only one item is expanded in each call of this slot
+        // because expanding any item will trigger KDirLister::openUrl(...) via KDirModel::fetchMore(...),
+        // and we can only continue when the dir lister is done.
+        const QModelIndex proxyIndex = m_proxyModel->mapFromSource(dirIndex);
+        m_detailsView->expand(proxyIndex);
+    }
+    else {
+        emit completed();
+        stop();
+    }
+}