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68 lines
2.0 KiB
68 lines
2.0 KiB
/*
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* Copyright (C) 2013 - 2015 Hong Jen Yee (PCMan) <pcman.tw@gmail.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library 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 GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; 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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*/
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#include "cachedfoldermodel.h"
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namespace Fm {
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CachedFolderModel::CachedFolderModel(const std::shared_ptr<Fm::Folder>& folder):
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FolderModel(),
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refCount(1) {
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FolderModel::setFolder(folder);
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}
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CachedFolderModel::~CachedFolderModel() {
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// qDebug("delete CachedFolderModel");
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}
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CachedFolderModel* CachedFolderModel::modelFromFolder(const std::shared_ptr<Fm::Folder>& folder) {
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QVariant cache = folder->property(cacheKey);
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CachedFolderModel* model = cache.value<CachedFolderModel*>();
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if(model) {
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model->ref();
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}
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else {
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model = new CachedFolderModel(folder);
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cache = QVariant::fromValue(model);
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folder->setProperty(cacheKey, cache);
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}
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return model;
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}
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CachedFolderModel* CachedFolderModel::modelFromPath(const Fm::FilePath& path) {
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auto folder = Fm::Folder::fromPath(path);
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if(folder) {
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CachedFolderModel* model = modelFromFolder(folder);
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return model;
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}
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return nullptr;
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}
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void CachedFolderModel::unref() {
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// qDebug("unref cache");
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--refCount;
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if(refCount <= 0) {
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folder()->setProperty(cacheKey, QVariant());
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deleteLater();
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}
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}
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} // namespace Fm
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