/*******************************************************************************
* Copyright (c) 2008 Nokia Corporation and/or its subsidiary(-ies).
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Nokia Corporation - initial implementation
*******************************************************************************/
#ifndef SWT_LISTDATAMODEL_H
#define SWT_LISTDATAMODEL_H
#include <QAbstractListModel>
#include <QItemDelegate>
#include <QTextLayout>
#include <QItemSelection>
#include <QList>
#include "jniutils.h"
class QListView;
namespace Java { namespace eSWT {
class ListItem
{
public:
ListItem( const QString& aText );
virtual ~ListItem();
const QString& text() const;
virtual const QPixmap* image() const;
void setText(const QString& string);
Qt::CheckState checkState() const;
void setCheckState( Qt::CheckState state );
protected:
Qt::CheckState state;
QString txt;
};
class ListBoxItem : public ListItem
{
public:
ListBoxItem(const QString& aDetailText, const QPixmap* aDetailImages, const int aDetailImageCount,
const QString& aHeadingText, const QPixmap* aHeadingImages, const int aHeadingImageCount );
~ListBoxItem();
const QString& headingText() const;
const QList<QPixmap>& detailImages() const ;
const QList<QPixmap>& headingImages() const;
int detailImageCount() const;
int headingImageCount() const;
void setContentsToNull();
private:
QString headingTxt;
QList<QPixmap> detailImgs;
QList<QPixmap> headingImgs;
};
class ListModel : public QAbstractListModel
{
public:
ListModel( int type, int style, QListView *parent );
~ListModel();
/**
* from QAbstractListModel
*/
int rowCount(const QModelIndex& parent) const;
QVariant data(const QModelIndex& index, int role) const;
Qt::ItemFlags flags ( const QModelIndex& index ) const;
/**
* called by JNI, these calls are delegated to protected methods from QAbstractListModel
*/
void beginInsertRows( const QModelIndex& parent, int first, int last );
void endInsertRows();
void beginRemoveRows( const QModelIndex& parent, int first, int last );
void endRemoveRows();
void emitLayoutAboutToBeChanged();
void emitLayoutChanged();
/**
* called by JNI
*/
static ListModel* createDataModel( int type, int style, QListView *parent );
const QString& itemString( const int row ) const;
jobjectArray itemStrings( JNIEnv* aJniEnv );
int indexOf( const QString& string, const int start ) const;
int insertPosition(const QString& string, const bool ascent = true );
void setCheckState( const QItemSelection& selection, Qt::CheckState state );
void remove( const int row );
void appendItem( const QString& string );
void appendItem( const QString& string, const QPixmap* pixmap );
void insertItem( const int row, const QString& string );
void insertItem( const int row, const QString& string, const QPixmap* pixmap );
virtual void appendItem(const QString& aDetailText, const QPixmap* aDetailImages, const int aDetailImageCount,
const QString& aHeadingText, const QPixmap* aHeadingImages, const int aHeadingImageCount );
virtual int itemHeight();
virtual void clearList();
virtual void setItemContentsToNull( const int row );
/**
* called by other native classes
*/
int style() const;
protected:
virtual ListItem* createItem( const QString& string );
virtual ListItem* createItem( const QString& string, const QPixmap* pixmap );
virtual ListItem* createItem(const QString& aDetailText, const QPixmap* aDetailImages, const int aDetailImageCount,
const QString& aHeadingText, const QPixmap* aHeadingImages, const int aHeadingImageCount );
protected:
const int listType;
const int layoutStyle;
/**
* data body
*/
QList<ListItem*> list;
};
class ListBoxModel : public ListModel
{
public:
ListBoxModel( int type, int style, QListView *parent );
~ListBoxModel();
/**
* from ListModel
*/
void clearList();
void appendItem(const QString& aDetailText, const QPixmap* aDetailImages, const int aDetailImageCount,
const QString& aHeadingText, const QPixmap* aHeadingImages, const int aHeadingImageCount );
/**
* Below 5 methods provide item data
*/
const QString& headingText(const int row) const;
int detailImageCount( const int row ) const;
int headingImageCount( const int row ) const;
const QList<QPixmap>& detailImages(const int row ) const;
const QList<QPixmap>& headingImages( const int row ) const;
/**
* called by ListBoxDelegate to save cached layout data to ListModel
* so that the ListBoxDelegate does not have to compute layout data from scratch
* whenever drawing a list item.
*/
void updateLayoutData( const int row, const int rowHeight, const QPoint detailTxtSize,
const QPoint headingTxtSize, const int detailImgWidth, const int headingImgWidth ) const;
/**
* Below 10 methods provide cached layout data
*/
const int& detailImageWidth(const int index ) const;
const int& headingImageWidth(const int index ) const;
QPoint detailTextSize() const;
QPoint headingTextSize() const;
int detailImageCount() const;
int headingImageCount() const;
QPoint detailImageSize(const int row) const;
QPoint headingImageSize(const int row) const;
int rowWithMaxDetailTextSize() const;
int rowWithMaxHeadingTextSize() const;
void setItemContentsToNull( const int row );
protected:
/**
* from ListModel
*/
ListItem* createItem(const QString& aDetailText, const QPixmap* aDetailImages, const int aDetailImageCount,
const QString& aHeadingText, const QPixmap* aHeadingImages, const int aHeadingImageCount );
private:
/**
* layout data
*/
/**
* holds the index which item has the largest detail text size
*/
int detailTxtIndex;
/**
* holds the index which item has the largest heading text size
*/
int headingTxtIndex;
/**
* holds the largest detail text size
*/
mutable QPoint detailTxtSize;
/**
* holds the largest heading text size
*/
mutable QPoint headingTxtSize;
/**
* holds the amount of columns for detail images
*/
int detailImgCount;
/**
* holds the amount of columns for heading images
*/
int headingImgCount;
/**
* holds maximum height of images
*/
int imgHeight;
/**
* holds widths for every detail image columns
*/
int* detailImgWidths;
/**
* holds widths for every heading image columns
*/
int* headingImgWidths;
/**
* holds heights for every rows
*/
mutable int* rowHeights;
/**
* holds entire width for all of detail images.
*/
mutable int detailImgWidth;
/**
* holds entire width for all of heading images.
*/
mutable int headingImgWidth;
};
class ListBoxItemDelegate : public QItemDelegate
{
Q_OBJECT
public:
ListBoxItemDelegate( QObject* parent );
// from QItemDelegate
void paint(QPainter * painter, const QStyleOptionViewItem& option, const QModelIndex& index ) const;
QSize sizeHint(const QStyleOptionViewItem &option, const QModelIndex &index) const;
// called from JNI
void setHeadingFont( QFont* font );
private:
/**
* compute sizes of checkbox, detailtext, headingtext, detailImage and headingImage.
*/
void computeSizes( const QModelIndex& index, const QStyleOptionViewItem& option, QSize* checkSize,
QSize *headingImageSize, QSize* detailImageSize, QSize* headingTextSize, QSize* detailTextSize) const;
/**
* add margins to checkbox, detailtext, headingtext, detailImage and headingImage.
*/
void addMargins( const QStyleOptionViewItem &option, QSize* checkSize,
QSize* headingImageSize, QSize* detailImageSize, QSize* headingTextSize, QSize* detailTextSize ) const;
/**
* compute item entire size for the item
*/
QSize computeSize( const QStyleOptionViewItem &option, const QSize& check, const QSize& headingImage,
const QSize& detailImage, const QSize& headingText, const QSize& detailText ) const;
/**
* layout checkbox, detailtext, headingtext, detailImage and headingImage within a given rectangle
* and adjust sizes and positions according to alignments from option
*/
void layoutRects( const QStyleOptionViewItem &option, QRect* check, QRect *headingImage,
QRect* detailImage, QRect* headingText, QRect* detailText, bool hint ) const;
/**
* layout checkbox, detailtext, headingtext, detailImage and headingImage within a given rectangle
*/
void doLayout( const QStyleOptionViewItem &option, QRect* checkRect, QRect* headingImageRect,
QRect* detailImageRect, QRect* headingTextRect, QRect* detailTextRect ) const;
QStyleOptionViewItem setOptions(const QModelIndex &index, const QStyleOptionViewItem &option) const;
QRect textRectangle(const int width, const QFont &font, const QString &text) const;
int margin( const QStyleOptionViewItem &option ) const;
private:
void drawImages( QPainter* painter, const QStyleOptionViewItem &option,
const QRect imageRect, const QList<QPixmap>& images, const int* imageWidths, const int imageCount ) const;
private:
/**
* not own
*/
const ListBoxModel* dataModel;
mutable QTextLayout textLayout;
QFont* headingFont;
};
}}
#endif // SWT_LISTDATAMODEL_H