surfer/src/qbrowserlib/buttonlineedit.hxx

/*! @file

    @id $Id$
*/
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#ifndef __BUTTONLINEEDIT_HXX__
#define __BUTTONLINEEDIT_HXX__

#include <qbrowserlib/log.hxx>
#include <QtGui/QLineEdit>
#include <QtGui/QToolButton>
#include <QtGui/QAction>
#include <QtGui/QStyle>
#include <QtCore/QDebug>

//! @addtogroup qbrowserlib
//! @{

//! A QLineEdit that may have buttons to the right within the lineedit.
class ButtonLineEdit: public QLineEdit {
    Q_OBJECT;
  public:
    ButtonLineEdit(QWidget* p=0): QLineEdit(p) {
      TRC;
    }
    QToolButton* add(QAction* a) {
      TRC;
      QToolButton* b(new QToolButton(this));
      b->setDefaultAction(a);
      add(b);
      return b;
    }
    ButtonLineEdit& add(QToolButton* b) {
      TRC;
      b->setParent(this);
      b->setStyleSheet("QToolButton { border: none; padding: 0; }");
      b->setCursor(Qt::ArrowCursor);
      _buttons.push_back(b);
      resizeEvent(0);
      return *this;
    }
    ButtonLineEdit& changeStyleSheet(QString s) {
      TRC;
      _style = s;
      resizeEvent(0);
      return *this;
    }
    static void foreachActionWidget(QAction& a, void(QWidget::*f)()) {
      QList<QWidget*> widgets(a.associatedWidgets());
      for (QList<QWidget*>::iterator w(widgets.begin()); w!=widgets.end(); ++w)
        ((*w)->*f)();
    }
  protected:
    void resizeEvent(QResizeEvent*) {
      QSize sz;
      int frameWidth = style()->pixelMetric(QStyle::PM_DefaultFrameWidth);
      for (Buttons::iterator it(_buttons.begin());
           it!=_buttons.end(); ++it) {
        if (sz.isEmpty()) sz = (*it)->sizeHint();
        else sz.setWidth(sz.width()+(*it)->sizeHint().width());
        (*it)->move(rect().right() - frameWidth - sz.width(),
                    (rect().bottom() + 1 - (*it)->sizeHint().height())/2);
      }
      setStyleSheet(QString("QLineEdit { padding-right: %1px; %2 }")
                    .arg(sz.width() + frameWidth + 1)
                    .arg(_style));
    }
  private:
    typedef QList<QToolButton*> Buttons;
    Buttons _buttons;
    QString _style;
};

//! @}
#endif