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/*
deferredtreeview.h
This file is part of GammaRay, the Qt application inspection and manipulation tool.
SPDX-FileCopyrightText: 2016 Klarälvdalens Datakonsult AB, a KDAB Group company <info@kdab.com>
Author: Filipe Azevedo <filipe.azevedo@kdab.com>
SPDX-License-Identifier: GPL-2.0-or-later
Contact KDAB at <info@kdab.com> for commercial licensing options.
*/
#ifndef DEFERREDTREEVIEW_H
#define DEFERREDTREEVIEW_H
#include "gammaray_ui_export.h"
#include <QTreeView>
#include <QHeaderView>
#include <QMap>
QT_BEGIN_NAMESPACE
class QTimer;
QT_END_NAMESPACE
namespace GammaRay {
/** @brief Base tree view which allow deferred configurations.
*
* If you starts using some deferred members - stick to them to avoid
* synchronization states issues.
*/
class GAMMARAY_UI_EXPORT DeferredTreeView : public QTreeView
{
Q_OBJECT
public:
explicit DeferredTreeView(QWidget *parent = nullptr);
void setModel(QAbstractItemModel *model) override;
// TODO: Move sections members into HeaderView so it can be reused by QTableView.
QHeaderView::ResizeMode deferredResizeMode(int logicalIndex) const;
void setDeferredResizeMode(int logicalIndex, QHeaderView::ResizeMode mode);
bool deferredHidden(int logicalIndex) const;
void setDeferredHidden(int logicalIndex, bool hidden);
bool expandNewContent() const;
void setExpandNewContent(bool expand);
bool stretchLastSection() const;
void setStretchLastSection(bool stretch);
signals:
void newContentExpanded();
protected:
void resetDeferredInitialized();
protected slots:
void rowsInserted(const QModelIndex &parent, int start, int end) override;
private:
struct DeferredHeaderProperties
{
DeferredHeaderProperties() = default;
bool initialized = false;
// When trying to only play with hidden, we guess the resizeMode using header->resizeMode().
// Though hidden/unexisting columns always return resize mode Fixed, which is bad.
// Also when trying to only play with resizeMode, we guess the hidden property, can be wrong too.
// Let use int with -1 meaning don't apply the property.
int resizeMode = -1;
int hidden = -1;
};
typedef QMap<int, DeferredHeaderProperties> SectionsProperties;
// This use logical indexes
SectionsProperties m_sectionsProperties;
bool m_expandNewContent;
bool m_allExpanded;
QVector<QPersistentModelIndex> m_insertedRows;
QTimer *m_timer;
private slots:
void sectionCountChanged();
void triggerExpansion(const QModelIndex &parent);
void timeout();
};
} // namespace GammaRay
#endif // DEFERREDTREEVIEW_H
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