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unity8/plugins/Unity/Indicators/unitymenumodelcache.cpp
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1/*
2 * Copyright 2013 Canonical Ltd.
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU Lesser General Public License as published by
6 * the Free Software Foundation; version 3.
7 *
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU Lesser General Public License for more details.
12 *
13 * You should have received a copy of the GNU Lesser General Public License
14 * along with this program. If not, see <http://www.gnu.org/licenses/>.
15 *
16 * Authors:
17 * Nick Dedekind <nick.dedekind@canonical.com>
18 */
20#include "unitymenumodelcache.h"
21#include <unitymenumodel.h>
23#include <QQmlEngine>
25UnityMenuModelCache* UnityMenuModelCache::theCache = nullptr;
27UnityMenuModelCache* UnityMenuModelCache::singleton()
29 if (!theCache) {
30 theCache = new UnityMenuModelCache();
31 }
32 return theCache;
35UnityMenuModelCache::UnityMenuModelCache(QObject* parent)
36 : QObject(parent)
40QSharedPointer<UnityMenuModel> UnityMenuModelCache::model(const QByteArray& path)
42 if (m_registry.contains(path))
43 return m_registry[path];
45 UnityMenuModel* model = new UnityMenuModel;
46 QQmlEngine::setObjectOwnership(model, QQmlEngine::CppOwnership);
48 QSharedPointer<UnityMenuModel> menuModel(model);
49 connect(model, &QObject::destroyed, this, [this] {
50 QMutableHashIterator<QByteArray, QWeakPointer<UnityMenuModel>> iter(m_registry);
51 while(iter.hasNext()) {
52 auto keyVal = iter.next();
53 if (keyVal.value().toStrongRef().isNull()) {
54 iter.remove();
55 }
56 }
57 });
58 m_registry[path] = menuModel.toWeakRef();
60 menuModel->setMenuObjectPath(path);
61 return menuModel;
64bool UnityMenuModelCache::contains(const QByteArray& path)
66 return m_registry.contains(path);