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99 lines
2.7 KiB
99 lines
2.7 KiB
/*
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* Copyright (c) 2003-2007 André Wöbbeking <Woebbeking@kde.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#include "updateview_visitors.h"
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#include "updateview.h"
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#include "updateview_items.h"
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using Cervisia::Entry;
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ApplyFilterVisitor::ApplyFilterVisitor(UpdateView::Filter filter)
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: m_filter(filter)
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{
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}
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void ApplyFilterVisitor::preVisit(UpdateDirItem* item)
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{
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// as TQListViewItem::setVisible() is recursive we have to make
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// this UpdateDirItem visible first and later we can make it invisible
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item->setVisible(true);
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// assume that this item is invisible and correct it later
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// (see markAllParentsAsVisible())
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m_invisibleDirItems.insert(item);
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}
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void ApplyFilterVisitor::postVisit(UpdateDirItem* item)
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{
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// a UpdateDirItem is visible if
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// - it has visible children
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// - it is not opened
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// - empty directories are not hidden
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// - it has no parent (top level item)
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const bool visible(!m_invisibleDirItems.count(item)
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|| !item->wasScanned()
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|| !(m_filter & UpdateView::NoEmptyDirectories)
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|| !item->parent());
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// only set invisible as TQListViewItem::setVisible() is recursive
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// and so maybe overrides the state applied by the filter
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if (visible)
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{
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markAllParentsAsVisible(item);
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}
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else
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{
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item->setVisible(false);
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}
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}
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void ApplyFilterVisitor::visit(UpdateFileItem* item)
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{
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const bool visible(item->applyFilter(m_filter));
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if (visible)
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{
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markAllParentsAsVisible(item);
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}
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}
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void ApplyFilterVisitor::markAllParentsAsVisible(UpdateItem* item)
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{
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while ((item = static_cast<UpdateDirItem*>(item->parent())))
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{
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TItemSet::iterator it = m_invisibleDirItems.find(item);
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if (it != m_invisibleDirItems.end())
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{
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m_invisibleDirItems.erase(it);
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}
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else
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{
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// if this item isn't in the map anymore all parents
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// are already removed too
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break;
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}
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}
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}
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