kmail/managesievescriptsdialog_p.h

#ifndef __KMAIL__MANAGESIEVESCRIPTSDIALOG_P_H__
#define __KMAIL__MANAGESIEVESCRIPTSDIALOG_P_H__

#include <kdialog.h>
#include <ktextedit.h>

#include <QContextMenuEvent>
#include <QRadioButton>
#include <QTreeWidget>

namespace KMail {

class SieveEditor : public KDialog {
  Q_OBJECT
  Q_PROPERTY( QString script READ script WRITE setScript )
public:
  explicit SieveEditor( QWidget * parent=0, const char * name=0 );
  ~SieveEditor();

  QString script() const { return mTextEdit->toPlainText(); }
  void setScript( const QString & script ) { mTextEdit->setText( script ); }
private slots:
  void slotTextChanged();
private:
  KTextEdit * mTextEdit;
};

/**
 * A tree widget with an additional signal contextMenuRequested.
 */
class TreeWidgetWithContextMenu : public QTreeWidget
{
  Q_OBJECT

  public:

    TreeWidgetWithContextMenu( QWidget *parent )
      : QTreeWidget( parent )
    {}

  Q_SIGNALS:

    /**
     * Emitted when the user right-clicks an item.
     * @param item The item the user clicked on.
     * @param pos the position of the click, in global coordinates
     */
    void contextMenuRequested( QTreeWidgetItem* item, QPoint position );

  protected:

    /**
     * Reimplemented from QTreeWidget.
     */
    virtual void contextMenuEvent( QContextMenuEvent * event ) {
        emit contextMenuRequested( itemAt( event->pos() ), event->globalPos() );
    }
};

/**
 * A radio button which has an associated tree widget item, and which selectes that
 * tree widget item when receiving focus.
 */
class ItemRadioButton : public QRadioButton
{
  public:

    ItemRadioButton( QTreeWidgetItem *item )
        : QRadioButton(), mItem( item )
    {}

    ~ItemRadioButton() {
      mItem = 0;
    }

    /**
     * When calling QTreeWidget::clear() on a tree widget whose items have an
     * ItemRadioButton as item widget, focusInEvent is being called. Since
     * calling treeWidget() there would lead to a crash, as the tree widget is being
     * cleared, set this to true to prevent the crash.
     */
    static void setTreeWidgetIsBeingCleared( bool clearing ) {
      mTreeWidgetIsBeingCleared = clearing;
    }

  protected:

    /**
     * Reimplemented from QRadioButton to set the focus to the item
     */
    virtual void focusInEvent( QFocusEvent * )
    {
      if ( mItem && !mTreeWidgetIsBeingCleared ) {
        mItem->setSelected( true );
        mItem->treeWidget()->setCurrentItem( mItem );
      }
    }

  private:

    static bool mTreeWidgetIsBeingCleared;
    QTreeWidgetItem *mItem;
};

}

#endif /* __KMAIL__MANAGESIEVESCRIPTSDIALOG_P_H__ */