/**
* This class constructs and positions the menu buttons and assigns the handlers defined in MenuButtons.
*/
class Menu
{
constructor(pauseControl, playerViewControl, chat)
{
this.menuButton = Engine.GetGUIObjectByName("menuButton");
this.menuButton.onPress = this.toggle.bind(this);
registerHotkeyChangeHandler(this.rebuild.bind(this));
this.isOpen = false;
this.lastTick = undefined;
this.menuButtonPanel = Engine.GetGUIObjectByName("menuButtonPanel");
let menuButtons = this.menuButtonPanel.children;
this.margin = menuButtons[0].size.top;
this.buttonHeight = menuButtons[0].size.bottom;
let handlerNames = this.getHandlerNames();
if (handlerNames.length > menuButtons.length)
throw new Error(
"There are " + handlerNames.length + " menu buttons defined, " +
"but only " + menuButtons.length + " objects!");
this.buttons = handlerNames.map((handlerName, i) => {
let handler = new MenuButtons.prototype[handlerName](menuButtons[i], pauseControl, playerViewControl, chat);
this.initButton(handler, menuButtons[i], i);
return handler;
});
this.endPosition = this.margin + this.buttonHeight * (1 + handlerNames.length);
let size = this.menuButtonPanel.size;
size.top = -this.endPosition;
size.bottom = 0;
this.menuButtonPanel.size = size;
}
rebuild()
{
this.menuButton.tooltip = sprintf(translate("Press %(hotkey)s to toggle this menu."), {
"hotkey": colorizeHotkey("%(hotkey)s", this.menuButton.hotkey),
});
}
/**
* This function may be overwritten to change the button order.
*/
getHandlerNames()
{
return Object.keys(MenuButtons.prototype);
}
toggle()
{
this.isOpen = !this.isOpen;
this.startAnimation();
}
close()
{
this.isOpen = false;
this.startAnimation();
}
initButton(handler, button, i)
{
button.onPress = () => {
this.close();
handler.onPress();
};
let size = button.size;
size.top = this.buttonHeight * (i + 1) + this.margin;
size.bottom = this.buttonHeight * (i + 2);
button.size = size;
button.hidden = false;
}
startAnimation()
{
this.lastTick = Date.now();
this.menuButtonPanel.onTick = this.onTick.bind(this);
}
/**
* Animate menu panel.
*/
onTick()
{
let tickLength = Date.now() - this.lastTick;
this.lastTick = Date.now();
let maxOffset =
this.endPosition + (
this.isOpen ?
-this.menuButtonPanel.size.bottom :
+this.menuButtonPanel.size.top);
if (maxOffset <= 0)
{
delete this.menuButtonPanel.onTick;
return;
}
let offset = Math.min(this.Speed * tickLength, maxOffset) * (this.isOpen ? +1 : -1);
let size = this.menuButtonPanel.size;
size.top += offset;
size.bottom += offset;
this.menuButtonPanel.size = size;
}
}
/**
* Number of pixels per millisecond to move.
*/
Menu.prototype.Speed = 1.2;