connectionfilterproxymodel.cpp

   1 /*
   2   connectionfilterproxymodel.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: Volker Krause <volker.krause@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 "connectionfilterproxymodel.h"
  25 #include "connectionmodel.h"
  26
  27 using namespace GammaRay;
  28
  29 ConnectionFilterProxyModel::ConnectionFilterProxyModel(QObject *parent)
  30   : QSortFilterProxyModel(parent),
  31     m_receiver(0),
  32     m_sender(0)
  33 {
  34   setDynamicSortFilter(true);
  35 }
  36
  37 void ConnectionFilterProxyModel::filterReceiver(QObject *receiver)
  38 {
  39   m_receiver = receiver;
  40   invalidateFilter();
  41 }
  42
  43 void ConnectionFilterProxyModel::filterSender(QObject *sender)
  44 {
  45   m_sender = sender;
  46   invalidateFilter();
  47 }
  48
  49 bool ConnectionFilterProxyModel::filterAcceptsRow(int source_row,
  50                                                   const QModelIndex &source_parent) const
  51 {
  52   const QModelIndex sourceIndex = sourceModel()->index(source_row, 0, source_parent);
  53   if (m_sender &&
  54       sourceIndex.data(ConnectionModel::SenderRole).value<QObject*>() != m_sender) {
  55     return false;
  56   }
  57   if (m_receiver &&
  58       sourceIndex.data(ConnectionModel::ReceiverRole).value<QObject*>() != m_receiver) {
  59     return false;
  60   }
  61   return QSortFilterProxyModel::filterAcceptsRow(source_row, source_parent);
  62 }
  63
  64 bool ConnectionFilterProxyModel::filterAcceptsColumn(int source_column,
  65                                                      const QModelIndex &source_parent) const
  66 {
  67   if (m_sender && source_column == 0) {
  68     return false;
  69   }
  70   if (m_receiver && source_column == 2) {
  71     return false;
  72   }
  73   return QSortFilterProxyModel::filterAcceptsColumn(source_column, source_parent);
  74 }
  75
  76 bool ConnectionFilterProxyModel::lessThan(const QModelIndex &left, const QModelIndex &right) const
  77 {
  78   const bool leftValid = left.data(ConnectionModel::ConnectionValidRole).toBool();
  79   const bool rightValid = right.data(ConnectionModel::ConnectionValidRole).toBool();
  80   if (leftValid == rightValid) {
  81     return QSortFilterProxyModel::lessThan(left, right);
  82   } else {
  83     return rightValid;
  84   }
  85 }
  86
  87 #include "connectionfilterproxymodel.moc"