Support for key_up and down in the combobox delegate.

Adds spport for key_up and key_down in the combobox
delegates, now when you press key_up or down, it will
show the list of choices instead of going one-by-one
in the lineedit.

Signed-off-by: Tomaz Canabrava <tcanabrava@kde.org>

2 files changed, 23 insertions, 0 deletions

diff --git a/qt-ui/modeldelegates.cpp b/qt-ui/modeldelegates.cpp
index 3aeaa02b5..28a6689b8 100644
--- a/qt-ui/modeldelegates.cpp
+++ b/qt-ui/modeldelegates.cpp
@@ -12,6 +12,8 @@
 #include <QComboBox>
 #include <QCompleter>
 #include <QLineEdit>
+#include <QKeyEvent>
+#include <QAbstractItemView>
 
 StarWidgetsDelegate::StarWidgetsDelegate(QWidget* parent):
 	QStyledItemDelegate(parent),
@@ -65,6 +67,7 @@ void ComboBoxDelegate::setEditorData(QWidget* editor, const QModelIndex& index)
 		c->setEditText(data);
 }
 
+QComboBox *comboEditor;
 QWidget* ComboBoxDelegate::createEditor(QWidget* parent, const QStyleOptionViewItem& option, const QModelIndex& index) const
 {
 	QComboBox *comboDelegate = new QComboBox(parent);
@@ -73,9 +76,26 @@ QWidget* ComboBoxDelegate::createEditor(QWidget* parent, const QStyleOptionViewI
 	comboDelegate->setAutoCompletion(true);
 	comboDelegate->setAutoCompletionCaseSensitivity(Qt::CaseInsensitive);
 	comboDelegate->completer()->setCompletionMode(QCompleter::PopupCompletion);
+	comboDelegate->lineEdit()->installEventFilter( const_cast<QObject*>(qobject_cast<const QObject*>(this)));
+	comboEditor = comboDelegate;
 	return comboDelegate;
 }
 
+bool ComboBoxDelegate::eventFilter(QObject* object, QEvent* event)
+{
+	// Reacts on Key_UP and Key_DOWN to show the QComboBox - list of choices.
+	if (event->type() == QEvent::KeyPress){
+		QKeyEvent *ev = static_cast<QKeyEvent*>(event);
+		if(ev->key() == Qt::Key_Up || ev->key() == Qt::Key_Down){
+			QString curr = comboEditor->currentText();
+			comboEditor->showPopup();
+			return true;
+		}
+	}
+
+    return QStyledItemDelegate::eventFilter(object, event);
+}
+
 void ComboBoxDelegate::updateEditorGeometry(QWidget* editor, const QStyleOptionViewItem& option, const QModelIndex& index) const
 {
 	QRect defaultRect = option.rect;
diff --git a/qt-ui/modeldelegates.h b/qt-ui/modeldelegates.h
index a33fc891b..e57c8729f 100644
--- a/qt-ui/modeldelegates.h
+++ b/qt-ui/modeldelegates.h
@@ -2,6 +2,7 @@
 #define MODELDELEGATES_H
 
 #include <QStyledItemDelegate>
+class QComboBox;
 
 class StarWidgetsDelegate : public QStyledItemDelegate {
 	Q_OBJECT
@@ -20,8 +21,10 @@ public:
 	virtual QWidget* createEditor(QWidget* parent, const QStyleOptionViewItem& option, const QModelIndex& index) const;
 	virtual void setEditorData(QWidget* editor, const QModelIndex& index) const;
     virtual void updateEditorGeometry(QWidget* editor, const QStyleOptionViewItem& option, const QModelIndex& index) const;
+    virtual bool eventFilter(QObject* object, QEvent* event);
 protected:
 	QAbstractItemModel *model;
+	QComboBox *comboBox; // warning - it's null everytime a edit's finished.
 };
 
 class TankInfoDelegate : public ComboBoxDelegate{