git.iko.soy/unity8
on 047d782 help sign in
unity8/plugins/Unity/Indicators/unitymenumodelstack.cpp
69 lines 1.7 kB history raw
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 "unitymenumodelstack.h"
22UnityMenuModelStack::UnityMenuModelStack(QObject* parent)
23 : QObject(parent)
27UnityMenuModelStack::~UnityMenuModelStack()
31UnityMenuModel* UnityMenuModelStack::head() const
33 return !m_menuModels.isEmpty() ? m_menuModels.first() : NULL;
36void UnityMenuModelStack::setHead(UnityMenuModel* model)
38 if (head() != model) {
39 m_menuModels.clear();
40 push(model);
41 Q_EMIT headChanged(model);
42 }
45UnityMenuModel* UnityMenuModelStack::tail() const
47 return !m_menuModels.isEmpty() ? m_menuModels.last() : NULL;
50void UnityMenuModelStack::push(UnityMenuModel* model)
52 m_menuModels << model;
53 Q_EMIT tailChanged(model);
56UnityMenuModel* UnityMenuModelStack::pop()
58 if (m_menuModels.isEmpty()) {
59 return NULL;
60 }
61 UnityMenuModel* model = m_menuModels.takeLast();
63 Q_EMIT tailChanged(tail());
64 if (m_menuModels.isEmpty()) {
65 Q_EMIT headChanged(NULL);
66 }
68 return model;