UI: Fix text handling for dialogs

Signal only needs to be connected once, not every keystroke.

Also commit data only when text widget focus is lost to fix cursor
moving to the end of the string after every keystroke.

UI/window-importer.cpp

@@ -92,6 +92,9 @@ QWidget *ImporterEntryPathItemDelegate::createEditor(
 					QSizePolicy::ControlType::LineEdit));
 	layout->addWidget(text);
 
+	QObject::connect(text, SIGNAL(editingFinished()), this,
+			 SLOT(updateText()));
+
 	QToolButton *browseButton = new QToolButton();
 	browseButton->setText("...");
 	browseButton->setSizePolicy(buttonSizePolicy);
@@ -121,8 +124,6 @@ void ImporterEntryPathItemDelegate::setEditorData(
 {
 	QLineEdit *text = editor->findChild<QLineEdit *>();
 	text->setText(index.data().toString());
-	QObject::connect(text, SIGNAL(textEdited(QString)), this,
-			 SLOT(updateText()));
 	editor->setProperty(PATH_LIST_PROP, QVariant());
 }
 

UI/window-remux.cpp

@@ -112,6 +112,9 @@ QWidget *RemuxEntryPathItemDelegate::createEditor(
 				    QSizePolicy::ControlType::LineEdit));
 		layout->addWidget(text);
 
+		QObject::connect(text, SIGNAL(editingFinished()), this,
+				 SLOT(updateText()));
+
 		QToolButton *browseButton = new QToolButton();
 		browseButton->setText("...");
 		browseButton->setSizePolicy(buttonSizePolicy);
@@ -143,8 +146,6 @@ void RemuxEntryPathItemDelegate::setEditorData(QWidget *editor,
 {
 	QLineEdit *text = editor->findChild<QLineEdit *>();
 	text->setText(index.data().toString());
-	QObject::connect(text, SIGNAL(textEdited(QString)), this,
-			 SLOT(updateText()));
 	editor->setProperty(PATH_LIST_PROP, QVariant());
 }