from browser import window, document
from message.message import Message, msg, delayed_msg


# click messages stuff

        
class DataChgClickMessage(Message):
    def on_event(self, event):
        event.stopPropagation()
        

class ClickMessage(DataChgClickMessage):
    def data_change(self):
        return False
    

# reset messages stuff

        
class Reset(ClickMessage):
    def update_model(self, model):
        pass
        
        
class NoReset(Reset):
    def reset(self):
        return False
    
    
class NoAction(NoReset):
    def no_action(self):
        return True
    
    
class KeyboardPress(Message):
    def on_event(self, event):
        self.add_arg(event.key)
        self.add_arg(event)
    
    def reset(self):
        key = self.get_arg(0, str)
        return key == "Escape"
    
    def data_change(self):
        return False
    
    def _handle_textarea(self):
        event = self.get_arg(1)
        if event.target["type"] == "textarea":
            event.preventDefault();
    
    def update_model(self, model):
        key = self.get_arg(0, str)
        
        # Enter when modal shown -> press ok button
        if model.modal_shown and key == "Enter":
            # handle textarea as per user wishes
            self._handle_textarea()
       
            ok_button = document.getElementById("modal-ok")
            if ok_button is not None:
                # has to be called in separate thread
                window.setTimeout(lambda: ok_button.click(), 10)


# a "hack" message for reseting modals #
# everytime a modal closes, run 100ms later model.modal = [] 
# this is done to achieve nice close animation
# after setting model.modal, do view update to actually update the DOM
class _ModalResetDelayed(Message):
    def update_model(self, model):
        model.modal_reset()
    
    def data_change(self):
        return False


class ModalNotOkClose(Reset):
    def update_model(self, model):
        # modal reset should be called a bit later for shoother transition
        delayed_msg(_ModalResetDelayed, None, 100)
    
    def data_change(self):
        return False