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libfm-qt-packaging/src/cachedfoldermodel.cpp

75 lines
2.0 KiB

/*
* Copyright (C) 2013 - 2015 Hong Jen Yee (PCMan) <pcman.tw@gmail.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#include "cachedfoldermodel.h"
namespace Fm {
static GQuark data_id = 0;
CachedFolderModel::CachedFolderModel(FmFolder* folder):
FolderModel(),
refCount(1) {
FolderModel::setFolder(folder);
}
CachedFolderModel::~CachedFolderModel() {
}
CachedFolderModel* CachedFolderModel::modelFromFolder(FmFolder* folder) {
CachedFolderModel* model = NULL;
if(!data_id)
data_id = g_quark_from_static_string("CachedFolderModel");
gpointer qdata = g_object_get_qdata(G_OBJECT(folder), data_id);
model = reinterpret_cast<CachedFolderModel*>(qdata);
if(model) {
// qDebug("cache found!!");
model->ref();
}
else {
model = new CachedFolderModel(folder);
g_object_set_qdata(G_OBJECT(folder), data_id, model);
}
return model;
}
CachedFolderModel* CachedFolderModel::modelFromPath(FmPath* path) {
FmFolder* folder = fm_folder_from_path(path);
if(folder) {
CachedFolderModel* model = modelFromFolder(folder);
g_object_unref(folder);
return model;
}
return NULL;
}
void CachedFolderModel::unref() {
// qDebug("unref cache");
--refCount;
if(refCount <= 0) {
g_object_set_qdata(G_OBJECT(folder()), data_id, NULL);
deleteLater();
}
}
} // namespace Fm