Synchronise html input with initial text of text input widgets

This way backspacing in gen level/env settings etc works properly

src/Menus.c

@@ -883,6 +883,7 @@ static void EditHotkeyScreen_Init(void* screen) {
 		ANCHOR_CENTRE, ANCHOR_CENTRE, 0, -35);
 	Menu_Back(s,  5, &s->cancel, Menu_SwitchHotkeys);
 	Window_OpenKeyboard();
+	Window_SetKeyboardText(&text);
 }
 
 static const struct ScreenVTABLE EditHotkeyScreen_VTABLE = {
@@ -1001,6 +1002,7 @@ static cc_bool GenLevelScreen_PointerDown(void* screen, int id, int x, int y) {
 	if (s->selected) s->selected->base.showCaret = false;
 	s->selected = (struct MenuInputWidget*)&s->inputs[i];
 	s->selected->base.showCaret = true;
+	Window_SetKeyboardText(&s->inputs[i].base.text);
 	return true;
 }
 
@@ -2100,6 +2102,7 @@ static void MenuOptionsScreen_Input(void* screen, void* widget) {
 
 	MenuOptionsScreen_RedrawInput(s);
 	Window_OpenKeyboard();
+	Window_SetKeyboardText(&value);
 }
 
 static void MenuOptionsScreen_OnHacksChanged(void* screen) {

src/Screens.c

@@ -233,7 +233,7 @@ static const struct ScreenVTABLE HUDScreen_VTABLE = {
 void HUDScreen_Show(void) {
 	struct HUDScreen* s = &HUDScreen_Instance;
 	s->VTABLE = &HUDScreen_VTABLE;
-	Gui_HUD   = (struct Screen*)s;
+	Gui_HUD   = s;
 	Gui_Replace((struct Screen*)s, GUI_PRIORITY_STATUS);
 }
 
@@ -822,13 +822,14 @@ void ChatScreen_Show(void) {
 	s->lastDownloadStatus = Int32_MinValue;
 
 	s->VTABLE = &ChatScreen_VTABLE;
-	Gui_Chat   = (struct Screen*)s;
+	Gui_Chat  = s;
 	Gui_Replace((struct Screen*)s, GUI_PRIORITY_HUD);
 }
 
 void ChatScreen_OpenInput(const String* text) {
-	struct ChatScreen* s  = &ChatScreen_Instance;
+	struct ChatScreen* s = &ChatScreen_Instance;
 #ifdef CC_BUILD_TOUCH
+	/* TODO: This is the wrong approach. need an event for all text input. */
 	s->suppressNextPress = !Input_TouchMode;
 #else
 	s->suppressNextPress = true;
@@ -836,6 +837,7 @@ void ChatScreen_OpenInput(const String* text) {
 	s->grabsInput        = true;
 	Camera_CheckFocus();
 	Window_OpenKeyboard();
+	Window_SetKeyboardText(text);
 
 	String_Copy(&s->input.base.text, text);
 	InputWidget_UpdateText(&s->input.base);

src/Window.c

@@ -615,6 +615,7 @@ static void Window_InitRawMouse(void) {
 }
 
 void Window_OpenKeyboard(void)  { }
+void Window_SetKeyboardText(const String* text) { }
 void Window_CloseKeyboard(void) { }
 
 void Window_EnableRawMouse(void) {
@@ -1518,6 +1519,7 @@ void Window_FreeFramebuffer(Bitmap* bmp) {
 }
 
 void Window_OpenKeyboard(void)  { }
+void Window_SetKeyboardText(const String* text) { }
 void Window_CloseKeyboard(void) { }
 void Window_EnableRawMouse(void)  { Window_DefaultEnableRawMouse();  }
 void Window_UpdateRawMouse(void)  { Window_DefaultUpdateRawMouse();  }
@@ -1788,6 +1790,7 @@ void Cursor_SetVisible(cc_bool visible) {
 }
 
 void Window_OpenKeyboard(void)  { }
+void Window_SetKeyboardText(const String* text) { }
 void Window_CloseKeyboard(void) { }
 
 void Window_EnableRawMouse(void) {
@@ -2711,12 +2714,9 @@ void Window_FreeFramebuffer(Bitmap* bmp) {
 	/* TODO: Do we still need to unlock it though? */
 }
 
-void Window_OpenKeyboard(void) { 
+void Window_OpenKeyboard(void)  { SDL_StartTextInput(); }
-	SDL_StartTextInput();
+void Window_SetKeyboardText(const String* text) { }
-}
+void Window_CloseKeyboard(void) { SDL_StopTextInput(); }
-void Window_CloseKeyboard(void) {
-	SDL_StopTextInput();
-}
 
 void Window_EnableRawMouse(void) {
 	Window_RegrabMouse();
@@ -3224,9 +3224,19 @@ void Window_OpenKeyboard(void)  {
 	});
 }
 
+void Window_SetKeyboardText(const String* text) {
+	char str[600];
+	if (!Input_TouchMode) return;
+	Platform_ConvertString(str, text);
+
+	EM_ASM_({
+		if (!window.cc_inputElem) return;
+		window.cc_inputElem.value = UTF8ToString($0);
+	}, str);
+}
+
 void Window_CloseKeyboard(void) {
 	if (!Input_TouchMode) return;
-	Platform_LogConst("CLOSE SESAME");
 	EM_ASM({
 		if (!window.cc_inputElem) return;
 		document.body.removeChild(window.cc_inputElem);
@@ -3630,6 +3640,7 @@ void Window_OpenKeyboard(void) {
 	JavaGetCurrentEnv(env);
 	JavaCallVoid(env, "openKeyboard", "()V", NULL);
 }
+void Window_SetKeyboardText(const String* text) { }
 
 void Window_CloseKeyboard(void) {
 	JNIEnv* env;

src/Window.h

@@ -126,6 +126,12 @@ void Window_FreeFramebuffer(Bitmap* bmp);
 /* Displays on-screen keyboard for platforms that lack physical keyboard input. */
 /* NOTE: On desktop platforms, this won't do anything. */
 void Window_OpenKeyboard(void);
+/* Sets the text used for keyboard input. */
+/* NOTE: This is only used for mobile on-screen keyboard input with the web client, */
+/* because it is backed by a HTML input, rather than true keyboard input events. */
+/* As such, this is necessary to ensure the HTML input is consistent with */
+/* whatever text input widget is actually being displayed on screen. */
+void Window_SetKeyboardText(const String* text);
 /* Hides/Removes the previously displayed on-screen keyboard. */
 void Window_CloseKeyboard(void);