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authortoma <toma@283d02a7-25f6-0310-bc7c-ecb5cbfe19da>2009-11-25 17:56:58 +0000
committertoma <toma@283d02a7-25f6-0310-bc7c-ecb5cbfe19da>2009-11-25 17:56:58 +0000
commitbd9e6617827818fd043452c08c606f07b78014a0 (patch)
tree425bb4c3168f9c02f10150f235d2cb998dcc6108 /cervisia/updateview_visitors.cpp
downloadtdesdk-bd9e6617827818fd043452c08c606f07b78014a0.tar.gz
tdesdk-bd9e6617827818fd043452c08c606f07b78014a0.zip
Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.
BUG:215923 git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdesdk@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da
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+/*
+ * Copyright (c) 2003-2007 André Wöbbeking <Woebbeking@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.
+ */
+
+
+#include "updateview_visitors.h"
+
+#include "updateview.h"
+#include "updateview_items.h"
+
+
+using Cervisia::Entry;
+
+
+ApplyFilterVisitor::ApplyFilterVisitor(UpdateView::Filter filter)
+ : m_filter(filter)
+{
+}
+
+
+void ApplyFilterVisitor::preVisit(UpdateDirItem* item)
+{
+ // as QListViewItem::setVisible() is recursive we have to make
+ // this UpdateDirItem visible first and later we can make it invisible
+ item->setVisible(true);
+
+ // assume that this item is invisible and correct it later
+ // (see markAllParentsAsVisible())
+ m_invisibleDirItems.insert(item);
+}
+
+
+void ApplyFilterVisitor::postVisit(UpdateDirItem* item)
+{
+ // a UpdateDirItem is visible if
+ // - it has visible children
+ // - it is not opened
+ // - empty directories are not hidden
+ // - it has no parent (top level item)
+ const bool visible(!m_invisibleDirItems.count(item)
+ || !item->wasScanned()
+ || !(m_filter & UpdateView::NoEmptyDirectories)
+ || !item->parent());
+
+ // only set invisible as QListViewItem::setVisible() is recursive
+ // and so maybe overrides the state applied by the filter
+ if (visible)
+ {
+ markAllParentsAsVisible(item);
+ }
+ else
+ {
+ item->setVisible(false);
+ }
+}
+
+
+void ApplyFilterVisitor::visit(UpdateFileItem* item)
+{
+ const bool visible(item->applyFilter(m_filter));
+ if (visible)
+ {
+ markAllParentsAsVisible(item);
+ }
+}
+
+
+void ApplyFilterVisitor::markAllParentsAsVisible(UpdateItem* item)
+{
+ while ((item = static_cast<UpdateDirItem*>(item->parent())))
+ {
+ TItemSet::iterator it = m_invisibleDirItems.find(item);
+ if (it != m_invisibleDirItems.end())
+ {
+ m_invisibleDirItems.erase(it);
+ }
+ else
+ {
+ // if this item isn't in the map anymore all parents
+ // are already removed too
+ break;
+ }
+ }
+}