Added love.keyboard.setTextInput to enable/disable text input events (enabled by default.)

This fixes the issue of receiving an unwanted text input event if a key is used to bring a game's textbox into focus, since textinput events can be triggered after keypress events if the keypress generates text.

src/modules/keyboard/Keyboard.h

@@ -254,6 +254,17 @@ public:
 	 **/
 	virtual bool isDown(Key *keylist) const = 0;
 
+	/**
+	 * Sets whether text input events should be sent
+	 * @param enable Whether to send text input events.
+	 **/
+	virtual void setTextInput(bool enable) = 0;
+
+	/**
+	 * Gets whether text input events are enabled.
+	 **/
+	virtual bool hasTextInput() const = 0;
+
 	static bool getConstant(const char *in, Key &out);
 	static bool getConstant(Key in, const char  *&out);
 

src/modules/keyboard/sdl/Keyboard.cpp

@@ -64,6 +64,19 @@ bool Keyboard::isDown(Key *keylist) const
 	return false;
 }
 
+void Keyboard::setTextInput(bool enable)
+{
+	if (enable)
+		SDL_StartTextInput();
+	else
+		SDL_StopTextInput();
+}
+
+bool Keyboard::hasTextInput() const
+{
+	return SDL_IsTextInputActive();
+}
+
 std::map<Keyboard::Key, SDL_Keycode> Keyboard::createKeyMap()
 {
 	std::map<Keyboard::Key, SDL_Keycode> k;

src/modules/keyboard/sdl/Keyboard.h

@@ -51,6 +51,9 @@ public:
 	bool hasKeyRepeat() const;
 	bool isDown(Key *keylist) const;
 
+	void setTextInput(bool enable);
+	bool hasTextInput() const;
+
 private:
 
 	bool key_repeat;

src/modules/keyboard/wrap_Keyboard.cpp

@@ -62,11 +62,25 @@ int w_isDown(lua_State *L)
 	return 1;
 }
 
+int w_setTextInput(lua_State *L)
+{
+	instance->setTextInput(luax_toboolean(L, 1));
+	return 0;
+}
+
+int w_hasTextInput(lua_State *L)
+{
+	luax_pushboolean(L, instance->hasTextInput());
+	return 1;
+}
+
 // List of functions to wrap.
 static const luaL_Reg functions[] =
 {
 	{ "setKeyRepeat", w_setKeyRepeat },
 	{ "hasKeyRepeat", w_hasKeyRepeat },
+	{ "setTextInput", w_setTextInput },
+	{ "hasTextInput", w_hasTextInput },
 	{ "isDown", w_isDown },
 	{ 0, 0 }
 };

src/modules/keyboard/wrap_Keyboard.h

@@ -32,6 +32,8 @@ namespace keyboard
 int w_setKeyRepeat(lua_State *L);
 int w_hasKeyRepeat(lua_State *L);
 int w_isDown(lua_State *L);
+int w_setTextInput(lua_State *L);
+int w_hasTextInput(lua_State *L);
 extern "C" LOVE_EXPORT int luaopen_love_keyboard(lua_State *L);
 
 } // keyboard