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/****************************************************************************
**
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: qt-info@nokia.com
**
** This software, including documentation, is protected by copyright
** controlled by Nokia Corporation. You may use this software in
** accordance with the terms and conditions contained in the Qt Phone
** Demo License Agreement.
**
****************************************************************************/
#ifndef CONTENTLIST_H
#define CONTENTLIST_H
#include <QList>
#include <QObject>
#include <QGraphicsObject>
#include <QAbstractAnimation>
#include <QPointer>
#define ITEM_TOP_PROPERTY_NAME "top"
class ContentListItem : public QObject, public QGraphicsItem
{
Q_OBJECT
Q_PROPERTY(qreal top READ getTop WRITE setTop);
Q_INTERFACES(QGraphicsItem);
public:
ContentListItem(QGraphicsItem *parent = 0);
virtual qreal contentHeight() const = 0;
QRectF boundingRect() const;
virtual QAbstractAnimation *getShowAnimation() = 0;
virtual QAbstractAnimation *getHideAnimation() = 0;
protected:
void updateGeometry();
QVariant itemChange(GraphicsItemChange change, const QVariant &value);
void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget = 0);
private:
friend class ContentList;
QRectF m_geometry;
bool m_geometryReady;
qreal getTop() { return pos().y(); }
void setTop(qreal top) { setPos(pos().x(), top); }
};
class ContentListActivity;
class RemoveActivity;
class InsertActivity;
class ContentList : public QObject, public QGraphicsItem
{
Q_OBJECT
Q_INTERFACES(QGraphicsItem);
public:
ContentList(QGraphicsItem *parent = 0);
ContentList(QList<ContentListItem*> items, QGraphicsItem *parent = 0);
~ContentList();
bool insertItem(int idx, ContentListItem*);
bool addItem(ContentListItem *item) { return insertItem(m_items.count(), item); }
bool removeItem(int idx);
bool removeItem(ContentListItem* item) { return removeItem(getItemIndex(item)); }
bool moveItem(int from, int to);
bool moveItem(ContentListItem* item, int to) { return moveItem(getItemIndex(item), to); }
void appendItems(QList<ContentListItem*> items);
int itemCount() const { return m_items.count(); }
ContentListItem* getItem(int idx) { return m_items.at(idx); }
int getItemIndex(ContentListItem* item) { return m_items.indexOf(item); }
bool busy() { return m_queue.count() > 0; }
void addActivity(ContentListActivity *);
void updateItems();
QRectF boundingRect() const;
qreal width() const;
void setWidth(qreal width);
signals:
void newContentItem(QGraphicsItem *item);
void contentItemRemoved(QGraphicsItem *item);
protected:
virtual QAbstractAnimation *getInsertAnimation(int idx, qreal height) = 0;
virtual QAbstractAnimation *getRemoveAnimation(int idx) = 0;
void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget = 0);
QList<ContentListItem*> getItems() { return m_items; }
typedef bool (*ContentListItemCompare)(const ContentListItem* s1, const ContentListItem* s2);
void sortItems(ContentListItemCompare compare);
private:
friend class ContentListActivity;
friend class RemoveActivity;
friend class InsertActivity;
friend class SortActivity;
friend class AppendItemsActivity;
QList<ContentListItem*> m_items;
QList<ContentListActivity*> m_queue;
QRectF m_boundingRect;
void updateGeometry();
void checkQueue();
void activityEnd();
void doRemoveItem(int idx, bool notify);
void doInsertItem(int idx, ContentListItem* item, bool notify);
void doAppendItems(QList<ContentListItem*> items, bool notify);
};
class ContentListActivity : public QObject
{
Q_OBJECT
public:
ContentListActivity(ContentList &list) : m_list(list), m_insertPos(0) {}
virtual bool run() = 0;
virtual bool active();
protected:
ContentList &m_list;
void addActivity(ContentListActivity*);
protected slots:
void activityEnd() { m_list.activityEnd(); }
private:
int m_insertPos;
};
class SignalActivity : public ContentListActivity
{
Q_OBJECT
public:
SignalActivity(ContentList &list) : ContentListActivity(list) {}
bool run();
signals:
void notify();
};
class SortActivity : public ContentListActivity
{
Q_OBJECT
public:
SortActivity(ContentList &list, ContentList::ContentListItemCompare compare)
: ContentListActivity(list), m_compare(compare) {}
bool run();
private:
ContentList::ContentListItemCompare m_compare;
};
class AppendItemsActivity : public ContentListActivity
{
Q_OBJECT
public:
AppendItemsActivity(ContentList &list, QList<ContentListItem*> items)
: ContentListActivity(list), m_items(items) {}
bool run();
private:
QList<ContentListItem*> m_items;
};
class AnimationActivity : public ContentListActivity
{
Q_OBJECT
public:
AnimationActivity(QAbstractAnimation *animation, ContentList &list);
~AnimationActivity();
bool run();
bool active() { return m_animation && m_animation->state() != QAbstractAnimation::Stopped; }
private slots:
void animationEnd();
private:
QAbstractAnimation *m_animation;
};
class RemoveActivity : public ContentListActivity
{
Q_OBJECT
public:
RemoveActivity(int idx, bool destroyItem, bool notify, ContentList &list);
bool run();
bool active() { return m_active; }
private slots:
void hideEnd();
private:
int m_idx;
bool m_destroyItem;
ContentListItem *m_item;
bool m_active;
const bool m_notify;
};
class InsertActivity : public ContentListActivity
{
Q_OBJECT
public:
InsertActivity(int idx, ContentListItem* item, bool notify, ContentList &list);
bool run();
bool active() { return m_active; }
private slots:
void showItem();
private:
int m_idx;
QPointer<ContentListItem> m_item;
bool m_active;
const bool m_notify;
};
class MoveActivity : public ContentListActivity
{
public:
MoveActivity(int from, int to, ContentList &list);
bool run();
private:
int m_from;
int m_to;
};
#endif // CONTENTLIST_H
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