ProjectExplorer: Improve "import project" keyboard event handling

Pressing return in the path chooser used to activate the "Configure"
button, which is not what users intend.

Fixes: QTCREATORBUG-17471
Change-Id: I86bc0dd9c976da35026654c7873dc4b63e45593c
Reviewed-by: hjk <hjk@qt.io>

src/plugins/projectexplorer/importwidget.cpp

@@ -29,6 +29,7 @@
 #include <utils/pathchooser.h>
 
 #include <QPushButton>
+#include <QTimer>
 #include <QVBoxLayout>
 
 namespace ProjectExplorer {
@@ -60,6 +61,14 @@ ImportWidget::ImportWidget(QWidget *parent) :
     layout->addWidget(importButton);
 
     connect(importButton, &QAbstractButton::clicked, this, &ImportWidget::handleImportRequest);
+    connect(m_pathChooser->lineEdit(), &QLineEdit::returnPressed, this, [this] {
+        if (m_pathChooser->isValid()) {
+            handleImportRequest();
+
+            // The next return should trigger the "Configure" button.
+            QTimer::singleShot(0, this, QOverload<>::of(&QWidget::setFocus));
+        }
+    });
 
     detailsWidget->setWidget(widget);
 }
@@ -70,6 +79,11 @@ void ImportWidget::setCurrentDirectory(const Utils::FilePath &dir)
     m_pathChooser->setFileName(dir);
 }
 
+bool ImportWidget::lineEditHasFocus() const
+{
+    return m_pathChooser->lineEdit()->hasFocus();
+}
+
 void ImportWidget::handleImportRequest()
 {
     Utils::FilePath dir = m_pathChooser->fileName();