QmlDesigner: Escape button press clears the search boxes

Task-number: QDS-7838
Change-Id: I1ed283846ba87eb2dbd786a560aaf940cb6f8132
Reviewed-by: Henning Gründl <henning.gruendl@qt.io>

share/qtcreator/qmldesigner/propertyEditorQmlSources/imports/StudioControls/SearchBox.qml

@@ -40,6 +40,13 @@ T.TextField {
     hoverEnabled: true
     clip: true
 
+    Keys.onPressed: (event) => {
+        if (event.key === Qt.Key_Escape && event.modifiers === Qt.NoModifier) {
+            control.clear()
+            event.accepted = true
+        }
+    }
+
     Text {
         id: placeholder
         x: control.leftPadding

src/plugins/qmldesigner/components/navigator/navigatorsearchwidget.cpp

@@ -8,6 +8,7 @@
 
 #include <QAction>
 #include <QBoxLayout>
+#include <QKeyEvent>
 #include <QLabel>
 #include <QStyle>
 #include <QToolButton>
@@ -71,7 +72,7 @@ LineEdit::LineEdit(QWidget *parent)
     setFixedHeight(29);
 }
 
-void LineEdit::resizeEvent(QResizeEvent *)
+void LineEdit::resizeEvent([[maybe_unused]] QResizeEvent *event)
 {
     QSize hint = clearButton->sizeHint();
     int frameWidth = style()->pixelMetric(QStyle::PM_DefaultFrameWidth);
@@ -80,6 +81,16 @@ void LineEdit::resizeEvent(QResizeEvent *)
                       (rect().bottom() + 1 - hint.height()) / 2);
 }
 
+void LineEdit::keyPressEvent(QKeyEvent *event)
+{
+    if (event->key() == Qt::Key_Escape && event->modifiers() == Qt::NoModifier) {
+        clear();
+        event->accept();
+        return;
+    }
+    QLineEdit::keyPressEvent(event);
+}
+
 void LineEdit::updateClearButton(const QString& text)
 {
     clearButton->setVisible(!text.isEmpty());

src/plugins/qmldesigner/components/navigator/navigatorsearchwidget.h

@@ -19,7 +19,8 @@ public:
     LineEdit(QWidget *parent = nullptr);
 
 protected:
-    void resizeEvent(QResizeEvent *);
+    void resizeEvent(QResizeEvent *event) override;
+    void keyPressEvent(QKeyEvent *event) override;
 
 private slots:
     void updateClearButton(const QString &text);