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/*
* This file is part of KDevelop
*
* Copyright 2008 Vladimir Prus <ghost@cs.msu.su>
*
* 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, write to the
* Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#ifndef KDEVPLATFORM_TREEITEM_H
#define KDEVPLATFORM_TREEITEM_H
#include <QVariant>
#include <QVector>
#include <QIcon>
#include <iostream>
#include <debugger/debuggerexport.h>
namespace KDevelop {
class TreeModel;
class KDEVPLATFORMDEBUGGER_EXPORT TreeItem: public QObject
{
Q_OBJECT
public:
~TreeItem() override;
// FIXME: should be protected
public: // Methods that the derived classes should implement
/** Fetches more children, and adds them by calling appendChild.
The amount of children to fetch is up to the implementation.
After fetching, should call setHasMore. */
virtual void fetchMoreChildren()=0;
virtual void setColumn(int index, const QVariant& data) { Q_UNUSED(index); Q_UNUSED(data); }
void emitAllChildrenFetched();
protected: // Interface for derived classes
/** Creates a tree item with the specified data.
FIXME: do we actually have to have the model
pointer.
*/
explicit TreeItem(TreeModel* model, TreeItem *parent = nullptr);
/** Set the data to be shown for the item itself. */
void setData(const QVector<QVariant> &data);
/** Adds a new child and notifies the interested parties.
Clears the "hasMore" flag. */
void appendChild(TreeItem *child, bool initial = false);
void insertChild(int position, TreeItem *child, bool initial = false);
void removeChild(int index);
void removeSelf();
void deleteChildren();
/** Report change in data of this item. */
void reportChange();
void reportChange(int column);
/** Clears all children. */
void clear();
/** Sets a flag that tells if we have some more children that are
not fetched yet. */
void setHasMore(bool more);
void setHasMoreInitial(bool more);
TreeModel* model() { return model_; }
bool isExpanded() const { return expanded_; }
Q_SIGNALS:
void expanded();
void collapsed();
void allChildrenFetched();
protected: // Backend implementation of Model/View
friend class TreeModel;
TreeItem *child(int row);
int childCount() const;
int columnCount() const;
virtual QVariant data(int column, int role) const;
int row() const;
TreeItem *parent();
bool hasMore() const { return more_; }
void setExpanded(bool b);
virtual void clicked() {}
virtual QVariant icon(int column) const;
protected:
QVector<TreeItem*> childItems;
QVector<QVariant> itemData;
TreeItem *parentItem;
TreeModel *model_;
bool more_;
TreeItem *ellipsis_;
bool expanded_;
};
}
#endif
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