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#ifndef TreeView_h
#define TreeView_h
/******************************************************************************
*
* Copyright (C) 2002 Hugo PEREIRA <mailto: hugo.pereira@free.fr>
*
* This 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 software 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, see <http://www.gnu.org/licenses/>.
*
*******************************************************************************/
#include "Counter.h"
#include "TextSelection.h"
#include <QAbstractItemDelegate>
#include <QMenu>
#include <QTreeView>
#include <QAction>
// forward declaration
class BaseFindDialog;
class BaseFindWidget;
class ItemModel;
//* customized tree view
class TreeView: public QTreeView, private Base::Counter<TreeView>
{
//* Qt meta object declaration
Q_OBJECT
public:
//* constructor
explicit TreeView( QWidget* = nullptr );
//*@name accessors
//@{
//* TextSelection object from this selection, or clipboard
TextSelection selection() const;
//* true if given index is visible
bool isVisible( const QModelIndex& index ) const;
//* number of visible columns
int visibleColumnCount() const;
//* option name
bool hasOptionName() const
{ return !maskOptionName().isEmpty(); }
//* option name
const QString& maskOptionName() const
{ return maskOptionName_; }
//* sort column option name
const QString& sortColumnOptionName() const
{ return sortColumnOptionName_; }
//* sort order option name
const QString& sortOrderOptionName() const
{ return sortOrderOptionName_; }
//* sort order option name
const QString& showHeaderOptionName() const
{ return showHeaderOptionName_; }
//* get mask
int mask() const;
//* item margin
int itemMargin() const
{ return itemMargin_; }
//@}
//*@name modifiers
//@{
//* model
void setModel( QAbstractItemModel* ) override;
//* delegate
void setItemDelegate( QAbstractItemDelegate* );
//* delegate
void setItemDelegateForColumn( int, QAbstractItemDelegate* );
//* enable list finding
void setFindEnabled( bool value );
//* option name
bool setOptionName( const QString& );
//* lock column
void lockColumnVisibility( int index )
{ setColumnVisibilityLocked( index, true ); }
//* lock/unlock column
void setColumnVisibilityLocked( int index, bool value )
{
if( value ) lockedColumns_ |= (1<<index);
else lockedColumns_ &= ~(1<<index);
}
//* true if column visibility is locked
bool isColumnVisibilityLocked( int index ) const
{ return lockedColumns_&(1<<index); }
//* load item margin from option
void setItemMarginFromOptions( bool value )
{ itemMarginFromOptions_ = value; }
//* load icon size from option
void setIconSizeFromOptions( bool value )
{ iconSizeFromOptions_ = value; }
//* force alternating row color
void forceAlternatingRowColors()
{
forceAlternatingRowColors_ = true;
setAlternatingRowColors( true );
}
//* set item margins
void setItemMargin( int );
//* set icon size manually and disable option
void setIconSize( const QSize& size )
{
if( size != iconSize() )
{
QTreeView::setIconSize( size );
#if QT_VERSION < 0x050000
emit iconSizeChanged( size );
#endif
}
iconSizeFromOptions_ = false;
}
//* store scrollbar position
void storeScrollBarPosition();
//* restore scrollbar position
void restoreScrollBarPosition();
//* set mask manually
void setMask( int );
//@}
//*@name actions
//@{
//* select all
QAction& selectAllAction() const
{ return *selectAllAction_; }
//* find from dialog
QAction& findAction() const
{ return *findAction_; }
//* find selection again
QAction& findSelectionAction() const
{ return *findSelectionAction_; }
//* find again
QAction& findAgainAction() const
{ return *findAgainAction_; }
//* show header
QAction& showHeaderAction() const
{ return *showHeaderAction_; }
//@}
//* container class for embedded Find dialog
class Container: public QWidget, private Base::Counter<Container>
{
public:
//* constructor
explicit Container( QWidget* = nullptr );
//* constructor
explicit Container( QWidget*, TreeView* );
//*@name accessors
TreeView& treeView() const
{ return *treeView_; }
private:
//* initialize
void _initialize();
//* contained treeView
TreeView* treeView_;
};
Q_SIGNALS:
//* emitted when index is hovered
/**
this is similar to the 'entered' signal,
except that it is also sent when no index is selected,
for instance, to hide tooltips
*/
void hovered( const QModelIndex& );
//* emitted when selection could not be found
void noMatchFound();
//* emitted when selection could be found
void matchFound();
#if QT_VERSION < 0x050000
//* icon size changed signal
void iconSizeChanged( const QSize& );
#endif
public Q_SLOTS:
//* resize all visible columns to match contents
void resizeColumns()
{ resizeColumns( mask() ); }
//* resize all visible columns to match contents
void resizeColumns( int mask );
//* toggle show header
void toggleShowHeader( bool value );
//*@name column mask
//@{
//* update column mask from option, if any
void updateMask();
//* save column mask to option, if any
void saveMask();
//@}
//* sort order
void updateSortOrder();
//* sort order
void saveSortOrder();
//* find next occurence of TextSelection
void find( TextSelection selection );
//* find current selection forward
void findSelectionForward()
{ _findForward( selection(), true ); }
//* find current selection backward
void findSelectionBackward()
{ _findBackward( selection(), true ); }
//* find last search forward
void findAgainForward();
//* find last search forward
void findAgainBackward();
//* store selected indexes in model
void storeSelectedIndexes();
//* restore selected indexes from model
void restoreSelectedIndexes();
//* store expanded indexes in model
void storeExpandedIndexes();
//* restore expanded indexes from model
void restoreExpandedIndexes();
protected:
//* generic event
bool event( QEvent* ) override;
//* mouse move event
void mouseMoveEvent( QMouseEvent* ) override;
//* mouse press event
void mousePressEvent( QMouseEvent* ) override;
//* paint event
void paintEvent( QPaintEvent* ) override;
//* find dialog
void _createFindDialog();
//* find widget
void _createFindWidget( bool compact );
//* find selection in forward direction
bool _findForward( const TextSelection& selection, bool rewind );
//* find selection in backward direction
bool _findBackward( const TextSelection& selection, bool rewind );
//* set item margin
void _setItemMargin( int );
//* hover index
void _setHoverIndex( const QModelIndex& );
protected Q_SLOTS:
//* header menu
void _raiseHeaderMenu( const QPoint& );
//* find text from dialog
void _findFromDialog();
//* hover index
void _indexEntered( const QModelIndex& );
private Q_SLOTS:
//* update alternate item color
void _updateConfiguration();
private:
//* install actions
void _installActions();
//* return first index
QModelIndex _firstIndex() const;
//* return last index
QModelIndex _lastIndex() const;
//* return next index of current
QModelIndex _indexAfter( const QModelIndex& ) const;
//* return previous index
QModelIndex _indexBefore( const QModelIndex& ) const;
//* find dialog
BaseFindDialog* findDialog_ = nullptr;
//* find widget
BaseFindWidget* findWidget_ = nullptr;
//* model
ItemModel* model_ = nullptr;
//* hover index
QModelIndex hoverIndex_;
//*@name actions
//@{
//* select all items
QAction* selectAllAction_ = nullptr;
//* find from dialog
QAction* findAction_ = nullptr;
//* find selection again
QAction* findSelectionAction_ = nullptr;
//* find selection backward
QAction* findSelectionBackwardAction_ = nullptr;
//* find again
QAction* findAgainAction_ = nullptr;
//* find again backward
QAction* findAgainBackwardAction_ = nullptr;
//* show/hide header action
QAction* showHeaderAction_ = nullptr;
//@}
//* mask option name
QString maskOptionName_;
//* sort column option name
QString sortColumnOptionName_;
//* sort order option name
QString sortOrderOptionName_;
//* header visibility
QString showHeaderOptionName_;
//* true if use dialog for finding
bool useEmbeddedWidgets_ = false;
//* true if item margins are to be set from options
bool itemMarginFromOptions_ = true;
//* true if icon size is to be set from options
bool iconSizeFromOptions_ = true;
//* force alternating row colors
bool forceAlternatingRowColors_ = false;
//* item margin
int itemMargin_ = 2;
//* selected column background color
bool useSelectedColumnColor_ = false;
//* vertical scrollbar position
int vertical_ = 0;
//* horizontal scrollbar position
int horizontal_ = 0;
//* locked columns
int lockedColumns_ = 0;
friend class Container;
};
#endif
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