Add Qt dir-requester widget

widgets/dirrequester.cpp

@@ -0,0 +1,27 @@
+#include "dirrequester.h"
+#include <QtGui/QToolButton>
+#include <QtGui/QFileDialog>
+#include <QtGui/QHBoxLayout>
+#include <QtGui/QIcon>
+
+DirRequester::DirRequester(QWidget *parent)
+    : QWidget(parent)
+{
+    QHBoxLayout *layout=new QHBoxLayout(this);
+    layout->setContentsMargins(0, 0, 0, 0);
+    edit=new LineEdit(this);
+    QToolButton *button=new QToolButton(this);
+    layout->addWidget(edit);
+    layout->addWidget(button);
+    button->setAutoRaise(true);
+    button->setIcon(QIcon::fromTheme("document-open"));
+    connect(button, SIGNAL(clicked(bool)), SLOT(chooseDir()));
+}
+
+void DirRequester::chooseDir()
+{
+    QString dir=QFileDialog::getExistingDirectory(this, tr("Select Folder"));
+    if (!dir.isEmpty()) {
+        edit->setText(dir);
+    }
+}