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#ifndef LineEditor_h
#define LineEditor_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 "WeakPointer.h"
#include <QContextMenuEvent>
#include <QKeyEvent>
#include <QLineEdit>
#include <QMenu>
#include <QProxyStyle>
class BaseContextMenu;
class LineEditor: public QLineEdit, private Base::Counter<LineEditor>
{
//* Qt meta object declaration
Q_OBJECT
public:
//* constructor
explicit LineEditor( QWidget* parent );
//* destructor
~LineEditor() override
{ delete proxyStyle_.data(); }
//@!name accessors
//@{
bool hasClearButton() const
{ return clearButton_ && clearButton_->isVisible(); }
//* return clear button width
int clearButtonWidth() const;
//* modification state
bool isModified() const
{ return modified_; }
//@}
//*@name modifiers
//@{
//* read-only state
void setReadOnly( bool );
//* set editor as modified
void setModified( bool value );
//* set clear button
void setHasClearButton( bool );
//* install actions in context menu
virtual void installContextMenuActions( BaseContextMenu* );
//@}
Q_SIGNALS:
//* signal emitted when the cursor changes position
void cursorPositionChanged( int position );
//* modification state changed
void modificationChanged( bool );
//* emitted when clear button is pressed
void cleared();
public Q_SLOTS:
//* set text
/** copy base class method to make it virtual */
virtual void setText( const QString& value )
{ QLineEdit::setText( value ); }
//* clear
/** copy base class method to make it virtual */
virtual void clear()
{ QLineEdit::clear(); }
//* changes selection to uppercase
void lowerCase();
//* changes selection to uppercase
void upperCase();
protected Q_SLOTS:
//* update modification state
void _modified( const QString& text );
//* update action status
void _updateSelectionActions();
//* update paste action
/** depends on clipboard status and editability */
void _updatePasteAction();
//* update undo/redo actions
void _updateUndoRedoActions();
protected:
//*@name event handlers
//@{
//* generic event
bool event( QEvent* ) override;
//* context menu (overloaded)
void contextMenuEvent( QContextMenuEvent* ) override;
//* overloaded key press event
void keyPressEvent( QKeyEvent* ) override;
//* paint event
void paintEvent( QPaintEvent* ) override;
//@}
//* toggle clear button
void _updateClearButton() const;
private:
//* install actions
void _installActions();
//* modification state
bool modified_ = false;
//* backup string to track modifications
QString backup_;
//*@name default actions
//@{
//* undo
QAction* undoAction_ = nullptr;
//* redo
QAction* redoAction_ = nullptr;
//* cut selection
QAction* cutAction_ = nullptr;
//* copy selection
QAction* copyAction_ = nullptr;
//* paste clipboard
QAction* pasteAction_ = nullptr;
//* clear document
QAction* clearAction_ = nullptr;
//* select all document
QAction* selectAllAction_ = nullptr;
//* convert selection to upper case
QAction* upperCaseAction_ = nullptr;
//* convert selection to lower case
QAction* lowerCaseAction_ = nullptr;
//@}
//* clear button
QWidget* clearButton_ = nullptr;
//* style proxy
Base::WeakPointer<QProxyStyle> proxyStyle_;
};
#endif
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