Add OnReturnPressed signal to sfg::Entry

Author: victorlevasseur

include/SFGUI/Entry.hpp

@@ -89,6 +89,7 @@ class SFGUI_API Entry : public Widget {
 
 		// Signals.
 		static Signal::SignalID OnTextChanged; //!< Fired when the text changes.
+		static Signal::SignalID OnReturnPressed; //!< Fired when enter is pressed.
 
 	protected:
 		/** Ctor.

src/SFGUI/Entry.cpp

@@ -10,6 +10,7 @@ namespace sfg {
 
 // Signals.
 Signal::SignalID Entry::OnTextChanged = 0;
+Signal::SignalID Entry::OnReturnPressed = 0;
 
 Entry::Entry() :
 	m_string(),
@@ -242,6 +243,9 @@ void Entry::HandleKeyEvent( sf::Keyboard::Key key, bool press ) {
 	case sf::Keyboard::Right: {
 		MoveCursor( 1 );
 	} break;
+	case sf::Keyboard::Return: {
+		GetSignals().Emit( OnReturnPressed );
+	} break;
 	default: break;
 	}
 }