/*
 * contactlistview.h - base contact list widget class
 * Copyright (C) 2008-2010  Yandex LLC (Michail Pishchagin)
 *
 * 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 library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 *
 */

#ifndef CONTACTLISTVIEW_H
#define CONTACTLISTVIEW_H

#include "hoverabletreeview.h"

#include <QPointer>

class QWidget;
class ContactListItem;
class ContactListItemMenu;
class ContactListItemProxy;
class QLineEdit;

class ContactListView : public HoverableTreeView
{
	Q_OBJECT

public:
	ContactListView(QWidget* parent = 0);

	QAbstractItemModel* realModel() const;
	QModelIndexList realIndexes(const QModelIndexList& indexes) const;
	QModelIndex realIndex(const QModelIndex& index) const;
	QModelIndexList proxyIndexes(const QModelIndexList& indexes) const;
	QModelIndex proxyIndex(const QModelIndex& index) const;
	ContactListItemProxy* itemProxy(const QModelIndex& index) const;
	void setEditingIndex(const QModelIndex& index, bool editing) const;

	void activate(const QModelIndex& index);
	void toggleExpandedState(const QModelIndex& index);
	void ensureVisible(const QModelIndex& index);

	// reimplemented
	void setModel(QAbstractItemModel* model);

public slots:
	virtual void rename();

signals:
	void realExpanded(const QModelIndex&);
	void realCollapsed(const QModelIndex&);

protected:
	// reimplemented
	bool viewportEvent(QEvent* event);
	void commitData(QWidget* editor);
	void closeEditor(QWidget* editor, QAbstractItemDelegate::EndEditHint hint);

	virtual void showToolTip(const QModelIndex& index, const QPoint& globalPos) const;

protected slots:
	virtual void itemActivated(const QModelIndex& index);

	virtual void showOfflineChanged();
	void updateGroupExpandedState();
	virtual void itemExpanded(const QModelIndex&);
	virtual void itemCollapsed(const QModelIndex&);

	// reimplamented
	virtual void selectionChanged(const QItemSelection& selected, const QItemSelection& deselected);
	virtual void focusInEvent(QFocusEvent* event);
	virtual void focusOutEvent(QFocusEvent* event);

protected:
	// reimplamented
	void contextMenuEvent(QContextMenuEvent*);
	virtual void doItemsLayout();
	void drawBranches(QPainter*, const QRect&, const QModelIndex&) const;
	void keyPressEvent(QKeyEvent*);
	void resizeEvent(QResizeEvent*);

	QLineEdit* currentEditor() const;

	bool isContextMenuVisible();
	virtual ContactListItemMenu* createContextMenuFor(ContactListItem* item) const;

	virtual void addContextMenuActions();
	virtual void removeContextMenuActions();
	virtual void addContextMenuAction(QAction* action);
	virtual void updateContextMenu();
	void saveCurrentGroupOrder(const QModelIndex& parent);

private:
	QPointer<ContactListItemMenu> contextMenu_;
	bool contextMenuActive_;
};

#endif
