qlistview.h Include File

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# qlistview.h

This is the verbatim text of the qlistview.h include file. It is provided only for illustration; the copyright remains with Trolltech.

    /****************************************************************************
    ** $Id: qt/qlistview.h   3.2.1   edited May 13 09:08 $
    **
    ** Definition of QListView widget class
    **
    ** Created : 970809
    **
    ** Copyright (C) 1992-2002 Trolltech AS.  All rights reserved.
    **
    ** This file is part of the widgets module of the Qt GUI Toolkit.
    **
    ** This file may be distributed under the terms of the Q Public License
    ** as defined by Trolltech AS of Norway and appearing in the file
    ** LICENSE.QPL included in the packaging of this file.
    **
    ** This file may be distributed and/or modified under the terms of the
    ** GNU General Public License version 2 as published by the Free Software
    ** Foundation and appearing in the file LICENSE.GPL included in the
    ** packaging of this file.
    **
    ** Licensees holding valid Qt Enterprise Edition or Qt Professional Edition
    ** licenses may use this file in accordance with the Qt Commercial License
    ** Agreement provided with the Software.
    **
    ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
    ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
    **
    ** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for
    **   information about Qt Commercial License Agreements.
    ** See http://www.trolltech.com/qpl/ for QPL licensing information.
    ** See http://www.trolltech.com/gpl/ for GPL licensing information.
    **
    ** Contact info@trolltech.com if any conditions of this licensing are
    ** not clear to you.
    **
    **********************************************************************/

    #ifndef QLISTVIEW_H
    #define QLISTVIEW_H

    #ifndef QT_H
    #include "qscrollview.h"
    #endif // QT_H

    #ifndef QT_NO_LISTVIEW

    class QPixmap;
    class QFont;
    class QHeader;
    class QIconSet;

    class QListView;
    struct QListViewPrivate;
    struct QCheckListItemPrivate;
    class QListViewItemIterator;
    struct QListViewItemIteratorPrivate;
    class QDragObject;
    class QMimeSource;
    class QLineEdit;
    class QListViewToolTip;

    class Q_EXPORT QListViewItem : public Qt
    {
        friend class QListViewItemIterator;
        friend class QListViewToolTip;
    #if defined(Q_CC_MSVC)
        friend class QListViewItem;
    #endif

    public:
        QListViewItem( QListView * parent );
        QListViewItem( QListViewItem * parent );
        QListViewItem( QListView * parent, QListViewItem * after );
        QListViewItem( QListViewItem * parent, QListViewItem * after );

        QListViewItem( QListView * parent,
    		   QString,     QString = QString::null,
    		   QString = QString::null, QString = QString::null,
    		   QString = QString::null, QString = QString::null,
    		   QString = QString::null, QString = QString::null );
        QListViewItem( QListViewItem * parent,
    		   QString,     QString = QString::null,
    		   QString = QString::null, QString = QString::null,
    		   QString = QString::null, QString = QString::null,
    		   QString = QString::null, QString = QString::null );

        QListViewItem( QListView * parent, QListViewItem * after,
    		   QString,     QString = QString::null,
    		   QString = QString::null, QString = QString::null,
    		   QString = QString::null, QString = QString::null,
    		   QString = QString::null, QString = QString::null );
        QListViewItem( QListViewItem * parent, QListViewItem * after,
    		   QString,     QString = QString::null,
    		   QString = QString::null, QString = QString::null,
    		   QString = QString::null, QString = QString::null,
    		   QString = QString::null, QString = QString::null );
        virtual ~QListViewItem();

        virtual void insertItem( QListViewItem * );
        virtual void takeItem( QListViewItem * );
        virtual void removeItem( QListViewItem *item ) { takeItem( item ); } //obsolete, use takeItem instead

        int height() const;
        virtual void invalidateHeight();
        int totalHeight() const;
        virtual int width( const QFontMetrics&,
    		       const QListView*, int column) const;
        void widthChanged(int column=-1) const;
        int depth() const;

        virtual void setText( int, const QString &);
        virtual QString text( int ) const;

        virtual void setPixmap( int, const QPixmap & );
        virtual const QPixmap * pixmap( int ) const;

        virtual QString key( int, bool ) const;
        virtual int compare( QListViewItem *i, int col, bool ) const;
        virtual void sortChildItems( int, bool );

        int childCount() const { return nChildren; }

        bool isOpen() const { return open; }
        virtual void setOpen( bool );
        virtual void setup();

        virtual void setSelected( bool );
        bool isSelected() const { return selected; }

        virtual void paintCell( QPainter *, const QColorGroup & cg,
    			    int column, int width, int alignment );
        virtual void paintBranches( QPainter * p, const QColorGroup & cg,
    				int w, int y, int h );
        virtual void paintFocus( QPainter *, const QColorGroup & cg,
    			     const QRect & r );

        QListViewItem * firstChild() const;
        QListViewItem * nextSibling() const { return siblingItem; }
        QListViewItem * parent() const;

        QListViewItem * itemAbove();
        QListViewItem * itemBelow();

        int itemPos() const;

        QListView *listView() const;

        virtual void setSelectable( bool enable );
        bool isSelectable() const { return selectable && enabled; }

        virtual void setExpandable( bool );
        bool isExpandable() const { return expandable; }

        void repaint() const;

        virtual void sort();
        void moveItem( QListViewItem *after );

        virtual void setDragEnabled( bool allow );
        virtual void setDropEnabled( bool allow );
        bool dragEnabled() const;
        bool dropEnabled() const;
        virtual bool acceptDrop( const QMimeSource *mime ) const;

        void setVisible( bool b );
        bool isVisible() const;

        virtual void setRenameEnabled( int col, bool b );
        bool renameEnabled( int col ) const;
        virtual void startRename( int col );

        virtual void setEnabled( bool b );
        bool isEnabled() const;

        virtual int rtti() const;
        // ### Qt 4: make const or better use an enum
        static int RTTI;

        virtual void setMultiLinesEnabled( bool b );
        bool multiLinesEnabled() const;

    protected:
        virtual void enforceSortOrder() const;
        virtual void setHeight( int );
        virtual void activate();

        bool activatedPos( QPoint & );
    #ifndef QT_NO_DRAGANDDROP
        virtual void dropped( QDropEvent *e );
    #endif
        virtual void dragEntered();
        virtual void dragLeft();
        virtual void okRename( int col );
        virtual void cancelRename( int col );

        void ignoreDoubleClick();

    private:
        void init();
        void moveToJustAfter( QListViewItem * );
        void enforceSortOrderBackToRoot();
        void removeRenameBox();

        int ownHeight;
        int maybeTotalHeight;
        int nChildren;

        uint lsc: 14;
        uint lso: 1;
        uint open : 1;
        uint selected : 1;
        uint selectable: 1;
        uint configured: 1;
        uint expandable: 1;
        uint is_root: 1;
        uint allow_drag : 1;
        uint allow_drop : 1;
        uint visible : 1;
        uint enabled : 1;
        uint mlenabled : 1;

        QListViewItem * parentItem;
        QListViewItem * siblingItem;
        QListViewItem * childItem;
        QLineEdit *renameBox;
        int renameCol;

        void * columns;

        friend class QListView;
    };

    class QCheckListItem;

    class Q_EXPORT QListView: public QScrollView
    {
        friend class QListViewItemIterator;
        friend class QListViewItem;
        friend class QCheckListItem;
        friend class QListViewToolTip;

        Q_OBJECT
        Q_ENUMS( SelectionMode ResizeMode RenameAction )
        Q_PROPERTY( int columns READ columns )
        Q_PROPERTY( bool multiSelection READ isMultiSelection WRITE setMultiSelection DESIGNABLE false )
        Q_PROPERTY( SelectionMode selectionMode READ selectionMode WRITE setSelectionMode )
        Q_PROPERTY( int childCount READ childCount )
        Q_PROPERTY( bool allColumnsShowFocus READ allColumnsShowFocus WRITE setAllColumnsShowFocus )
        Q_PROPERTY( bool showSortIndicator READ showSortIndicator WRITE setShowSortIndicator )
        Q_PROPERTY( int itemMargin READ itemMargin WRITE setItemMargin )
        Q_PROPERTY( bool rootIsDecorated READ rootIsDecorated WRITE setRootIsDecorated )
        Q_PROPERTY( bool showToolTips READ showToolTips WRITE setShowToolTips )
        Q_PROPERTY( ResizeMode resizeMode READ resizeMode WRITE setResizeMode )
        Q_PROPERTY( int treeStepSize READ treeStepSize WRITE setTreeStepSize )
        Q_PROPERTY( RenameAction defaultRenameAction READ defaultRenameAction WRITE setDefaultRenameAction )

    public:
        QListView( QWidget* parent=0, const char* name=0, WFlags f = 0 );
        ~QListView();

        int treeStepSize() const;
        virtual void setTreeStepSize( int );

        virtual void insertItem( QListViewItem * );
        virtual void takeItem( QListViewItem * );
        virtual void removeItem( QListViewItem *item ) { takeItem( item ); } // obsolete, use takeItem instead

        QHeader * header() const;

        virtual int addColumn( const QString &label, int size = -1);
        virtual int addColumn( const QIconSet& iconset, const QString &label, int size = -1);
        virtual void removeColumn( int index );
        virtual void setColumnText( int column, const QString &label );
        virtual void setColumnText( int column, const QIconSet& iconset, const QString &label );
        QString columnText( int column ) const;
        virtual void setColumnWidth( int column, int width );
        int columnWidth( int column ) const;
        enum WidthMode { Manual, Maximum };
        virtual void setColumnWidthMode( int column, WidthMode );
        WidthMode columnWidthMode( int column ) const;
        int columns() const;

        virtual void setColumnAlignment( int, int );
        int columnAlignment( int ) const;

        void show();

        QListViewItem * itemAt( const QPoint & screenPos ) const;
        QRect itemRect( const QListViewItem * ) const;
        int itemPos( const QListViewItem * );

        void ensureItemVisible( const QListViewItem * );

        void repaintItem( const QListViewItem * ) const;

        virtual void setMultiSelection( bool enable );
        bool isMultiSelection() const;

        enum SelectionMode { Single, Multi, Extended, NoSelection  };
        void setSelectionMode( SelectionMode mode );
        SelectionMode selectionMode() const;

        virtual void clearSelection();
        virtual void setSelected( QListViewItem *, bool );
        void setSelectionAnchor( QListViewItem * );
        bool isSelected( const QListViewItem * ) const;
        QListViewItem * selectedItem() const;
        virtual void setOpen( QListViewItem *, bool );
        bool isOpen( const QListViewItem * ) const;

        virtual void setCurrentItem( QListViewItem * );
        QListViewItem * currentItem() const;

        QListViewItem * firstChild() const;
        QListViewItem * lastItem() const;

        int childCount() const;

        virtual void setAllColumnsShowFocus( bool );
        bool allColumnsShowFocus() const;

        virtual void setItemMargin( int );
        int itemMargin() const;

        virtual void setRootIsDecorated( bool );
        bool rootIsDecorated() const;

        virtual void setSorting( int column, bool ascending = TRUE );
        int sortColumn() const;
        void setSortColumn( int column );
        SortOrder sortOrder() const;
        void setSortOrder( SortOrder order );
        virtual void sort();

        virtual void setFont( const QFont & );
        virtual void setPalette( const QPalette & );

        bool eventFilter( QObject * o, QEvent * );

        QSize sizeHint() const;
        QSize minimumSizeHint() const;

        virtual void setShowSortIndicator( bool show );
        bool showSortIndicator() const;
        virtual void setShowToolTips( bool b );
        bool showToolTips() const;

        enum ResizeMode { NoColumn, AllColumns, LastColumn };
        virtual void setResizeMode( ResizeMode m );
        ResizeMode resizeMode() const;

        QListViewItem * findItem( const QString& text, int column, ComparisonFlags compare = ExactMatch | CaseSensitive ) const;

        enum RenameAction { Accept, Reject };
        virtual void setDefaultRenameAction( RenameAction a );
        RenameAction defaultRenameAction() const;
        bool isRenaming() const;

        void hideColumn( int column );

    public slots:
        virtual void clear();
        virtual void invertSelection();
        virtual void selectAll( bool select );
        void triggerUpdate();
        void setContentsPos( int x, int y );
        void adjustColumn( int col );

    signals:
        void selectionChanged();
        void selectionChanged( QListViewItem * );
        void currentChanged( QListViewItem * );
        void clicked( QListViewItem * );
        void clicked( QListViewItem *, const QPoint &, int );
        void pressed( QListViewItem * );
        void pressed( QListViewItem *, const QPoint &, int );

        void doubleClicked( QListViewItem * );
        void doubleClicked( QListViewItem *, const QPoint&, int );
        void returnPressed( QListViewItem * );
        void spacePressed( QListViewItem * );
        void rightButtonClicked( QListViewItem *, const QPoint&, int );
        void rightButtonPressed( QListViewItem *, const QPoint&, int );
        void mouseButtonPressed( int, QListViewItem *, const QPoint& , int );
        void mouseButtonClicked( int, QListViewItem *,  const QPoint&, int );

        void contextMenuRequested( QListViewItem *, const QPoint &, int );

        void onItem( QListViewItem *item );
        void onViewport();

        void expanded( QListViewItem *item );
        void collapsed( QListViewItem *item );
    #ifndef QT_NO_DRAGANDDROP
        void dropped( QDropEvent *e );
    #endif
        void itemRenamed( QListViewItem *item, int col, const QString & );
        void itemRenamed( QListViewItem *item, int col  );

    protected:
        void contentsMousePressEvent( QMouseEvent * e );
        void contentsMouseReleaseEvent( QMouseEvent * e );
        void contentsMouseMoveEvent( QMouseEvent * e );
        void contentsMouseDoubleClickEvent( QMouseEvent * e );
        void contentsContextMenuEvent( QContextMenuEvent * e );
    #ifndef QT_NO_DRAGANDDROP
        void contentsDragEnterEvent( QDragEnterEvent *e );
        void contentsDragMoveEvent( QDragMoveEvent *e );
        void contentsDragLeaveEvent( QDragLeaveEvent *e );
        void contentsDropEvent( QDropEvent *e );
        virtual QDragObject *dragObject();
        virtual void startDrag();
    #endif

        void focusInEvent( QFocusEvent * e );
        void focusOutEvent( QFocusEvent * e );

        void keyPressEvent( QKeyEvent *e );

        void resizeEvent( QResizeEvent *e );
        void viewportResizeEvent( QResizeEvent *e );

        void showEvent( QShowEvent * );

        void drawContentsOffset( QPainter *, int ox, int oy,
    			     int cx, int cy, int cw, int ch );

        virtual void paintEmptyArea( QPainter *, const QRect & );
        void styleChange( QStyle& );
        void windowActivationChange( bool );

    protected slots:
        void updateContents();
        void doAutoScroll();

    private slots:
        void changeSortColumn( int );
        void updateDirtyItems();
        void makeVisible();
        void handleSizeChange( int, int, int );
        void startRename();
        void openFocusItem();

    private:
        void contentsMousePressEventEx( QMouseEvent * e );
        void contentsMouseReleaseEventEx( QMouseEvent * e );
        void init();
        void updateGeometries();
        void buildDrawableList() const;
        void reconfigureItems();
        void widthChanged(const QListViewItem*, int c);
        void handleItemChange( QListViewItem *old, bool shift, bool control );
        void selectRange( QListViewItem *from, QListViewItem *to, bool invert, bool includeFirst, bool clearSel = FALSE );
        bool selectRange( QListViewItem *newItem, QListViewItem *oldItem, QListViewItem *anchorItem );
        bool clearRange( QListViewItem *from, QListViewItem *to, bool includeFirst = TRUE );
        void doAutoScroll( const QPoint &cursorPos );

        QListViewPrivate * d;

    private:	// Disabled copy constructor and operator=
    #if defined(Q_DISABLE_COPY)
        QListView( const QListView & );
        QListView &operator=( const QListView & );
    #endif
    };

    class Q_EXPORT QCheckListItem : public QListViewItem
    {
    public:
        enum Type { RadioButton,
    		CheckBox,
    		Controller,
    		RadioButtonController=Controller,
    		CheckBoxController };
        // ### should be integrated with qbutton in ver4 perhaps
        enum ToggleState { Off, NoChange, On };

        QCheckListItem( QCheckListItem *parent, const QString &text,
    		    Type = RadioButtonController );
        QCheckListItem( QCheckListItem *parent, QListViewItem *after,
     		    const QString &text, Type = RadioButtonController );
        QCheckListItem( QListViewItem *parent, const QString &text,
    		    Type = RadioButtonController );
        QCheckListItem( QListViewItem *parent, QListViewItem *after,
     		    const QString &text, Type = RadioButtonController );
        QCheckListItem( QListView *parent, const QString &text,
    		    Type = RadioButtonController );
        QCheckListItem( QListView *parent, QListViewItem *after,
     		    const QString &text, Type = RadioButtonController );
        QCheckListItem( QListViewItem *parent, const QString &text,
    		    const QPixmap & );
        QCheckListItem( QListView *parent, const QString &text,
    		    const QPixmap & );
        ~QCheckListItem();

        void paintCell( QPainter *,  const QColorGroup & cg,
    		    int column, int width, int alignment );
        virtual void paintFocus( QPainter *, const QColorGroup & cg,
    			     const QRect & r );
        int width( const QFontMetrics&, const QListView*, int column) const;
        void setup();

        virtual void setOn( bool ); // ### should be replaced by setChecked in ver4
        bool isOn() const { return on; }
        Type type() const { return myType; }
        QString text() const { return QListViewItem::text( 0 ); }
        QString text( int n ) const { return QListViewItem::text( n ); }

        void setTristate( bool );
        bool isTristate() const;
        ToggleState state() const;
        void setState( ToggleState s);

        int rtti() const;
        static int RTTI;

    protected:
        void activate();
        void turnOffChild();
        virtual void stateChange( bool );

    private:
        void init();
        ToggleState internalState() const;
        void setStoredState( ToggleState newState, void *key );
        ToggleState storedState( void *key ) const;
        void stateChange( ToggleState s );
        void restoreState( void *key, int depth = 0 );
        void updateController( bool update = TRUE , bool store = FALSE );
        void updateStoredState( void *key );
        void setState( ToggleState s, bool update, bool store );
        void setCurrentState( ToggleState s );

        Type myType;
        bool on; // ### remove in ver4
        QCheckListItemPrivate *d;
    };

    class Q_EXPORT QListViewItemIterator
    {
        friend struct QListViewPrivate;
        friend class QListView;
        friend class QListViewItem;

    public:
        enum IteratorFlag {
    	Visible = 		0x00000001,
    	Invisible = 		0x00000002,
    	Selected =		0x00000004,
    	Unselected = 		0x00000008,
    	Selectable =		0x00000010,
    	NotSelectable =		0x00000020,
    	DragEnabled =		0x00000040,
    	DragDisabled =		0x00000080,
    	DropEnabled =		0x00000100,
    	DropDisabled =		0x00000200,
    	Expandable =		0x00000400,
    	NotExpandable =		0x00000800,
    	Checked =		0x00001000,
    	NotChecked =		0x00002000
        };

        QListViewItemIterator();
        QListViewItemIterator( QListViewItem *item );
        QListViewItemIterator( QListViewItem *item, int iteratorFlags );

        QListViewItemIterator( const QListViewItemIterator &it );
        QListViewItemIterator( QListView *lv );
        QListViewItemIterator( QListView *lv, int iteratorFlags );

        QListViewItemIterator &operator=( const QListViewItemIterator &it );

        ~QListViewItemIterator();

        QListViewItemIterator &operator++();
        const QListViewItemIterator operator++( int );
        QListViewItemIterator &operator+=( int j );

        QListViewItemIterator &operator--();
        const QListViewItemIterator operator--( int );
        QListViewItemIterator &operator-=( int j );

        QListViewItem* operator*();
        QListViewItem *current() const;

    protected:
        QListViewItem *curr;
        QListView *listView;

    private:
        QListViewItemIteratorPrivate* d() const;
        void init( int flags );
        void addToListView();
        void currentRemoved();
        bool matchesFlags( const QListViewItem* ) const;
        bool testPair( QListViewItemIterator::IteratorFlag, QListViewItemIterator::IteratorFlag, bool ) const;
        bool isChecked( const QListViewItem* ) const;
    };

    #endif // QT_NO_LISTVIEW

    #endif // QLISTVIEW_H