proxydetacher.cpp

   1 /*
   2   proxydetacher.cpp
   3
   4   This file is part of GammaRay, the Qt application inspection and
   5   manipulation tool.
   6
   7   Copyright (C) 2010-2011 Klarälvdalens Datakonsult AB, a KDAB Group company, info@kdab.com
   8   Author: Milian Wolff <milian.wolff@kdab.com>
   9
  10   This program is free software; you can redistribute it and/or modify
  11   it under the terms of the GNU General Public License as published by
  12   the Free Software Foundation, either version 2 of the License, or
  13   (at your option) any later version.
  14
  15   This program is distributed in the hope that it will be useful,
  16   but WITHOUT ANY WARRANTY; without even the implied warranty of
  17   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18   GNU General Public License for more details.
  19
  20   You should have received a copy of the GNU General Public License
  21   along with this program.  If not, see <http://www.gnu.org/licenses/>.
  22 */
  23
  24 #include "proxydetacher.h"
  25
  26 #include <QWidget>
  27 #include <QAbstractProxyModel>
  28 #include <QHideEvent>
  29 #include <QDebug>
  30
  31 using namespace GammaRay;
  32
  33 ProxyDetacher::ProxyDetacher(QWidget *widget,
  34                              QAbstractProxyModel *proxyModel,
  35                              QAbstractItemModel *sourceModel)
  36   : QObject(widget),
  37     m_widget(widget),
  38     m_proxy(proxyModel),
  39     m_source(sourceModel)
  40 {
  41   widget->installEventFilter(this);
  42 }
  43
  44 bool ProxyDetacher::eventFilter(QObject *obj, QEvent *e)
  45 {
  46   Q_ASSERT(obj == m_widget);
  47
  48   if (dynamic_cast<QHideEvent*>(e)) {
  49     Q_ASSERT(m_proxy->sourceModel() == m_source);
  50     m_proxy->setSourceModel(0);
  51   } else if (dynamic_cast<QShowEvent*>(e)) {
  52     Q_ASSERT(!m_proxy->sourceModel());
  53     m_proxy->setSourceModel(m_source);
  54   }
  55
  56   return QObject::eventFilter(obj, e);
  57 }
  58
  59 #include "proxydetacher.moc"