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/*
ViewFilter.h
This file is part of Charm, a task-based time tracking application.
Copyright (C) 2007-2018 Klarälvdalens Datakonsult AB, a KDAB Group company, info@kdab.com
Author: Mirko Boehm <mirko.boehm@kdab.com>
Author: Frank Osterfeld <frank.osterfeld@kdab.com>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 2 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef VIEWFILTER_H
#define VIEWFILTER_H
#include <QSortFilterProxyModel>
#include "Core/Configuration.h"
#include "TaskModelAdapter.h"
#include "Core/TaskModelInterface.h"
#include "Core/CommandEmitterInterface.h"
class CharmDataModel;
class CharmCommand;
// ViewFilter is implemented as a decorator to avoid accidental direct
// access to the task model with indexes of the proxy
class ViewFilter : public QSortFilterProxyModel, public TaskModelInterface,
public CommandEmitterInterface
{
Q_OBJECT
public:
explicit ViewFilter(CharmDataModel *, QObject *parent = nullptr);
~ViewFilter() override;
// implement TaskModelInterface
Task taskForIndex(const QModelIndex &) const override;
QModelIndex indexForTaskId(TaskId) const override;
bool taskIsActive(const Task &task) const override;
bool taskHasChildren(const Task &task) const override;
// filter for subscriptions:
void prefilteringModeChanged();
bool taskIdExists(TaskId taskId) const override;
void commitCommand(CharmCommand *) override;
bool filterAcceptsColumn(int source_column, const QModelIndex &source_parent) const override;
bool filterAcceptsRow(int row, const QModelIndex &parent) const override;
Q_SIGNALS:
void eventActivationNotice(EventId id) override;
void eventDeactivationNotice(EventId id) override;
private:
enum CheckFor {
HaveValidChild,
HaveSubscribedChild
};
bool checkChildren(Task task, CheckFor checkFor) const;
TaskModelAdapter m_model;
};
#endif
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