import gi
from gi.repository import Gtk, Gdk

class PromptView(Gtk.Box):
    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)

        self.prompt = Gtk.TextView(left_margin=12, top_margin=14,
                                   right_margin=12, bottom_margin=14)
        
        prompt_scroll = Gtk.ScrolledWindow(hexpand=True)
        prompt_scroll.set_propagate_natural_height(True)
        prompt_scroll.set_max_content_height(150)
        prompt_scroll.set_child(self.prompt)
        
        key_controller = Gtk.EventControllerKey()
        key_controller.connect("key-pressed", self.on_key_pressed)
        self.prompt.add_controller(key_controller)
        
        self.prompt_button = Gtk.Button(icon_name="go-next-symbolic")
        self.btn_handler = self.prompt_button.connect("clicked", self.on_send)

        self.append (prompt_scroll)
        self.append (self.prompt_button)

    @property
    def buffer(self):
        return self.prompt.get_buffer()

    def clear(self):
        self.buffer.set_text("")

    def get_text(self):
        return self.buffer.get_text(self.buffer.get_start_iter(),
                                    self.buffer.get_end_iter(), False).strip()
        
    def hold(self, *args):
        self.grab_focus()
        self.prompt.set_sensitive(False)
        self.prompt_button.set_icon_name("process-stop-symbolic")
        self.prompt_button.disconnect(self.btn_handler)
        self.btn_handler = self.prompt_button.connect("clicked", self.on_cancel)

    def unhold(self, *args):
        self.prompt.set_sensitive(True)
        self.prompt.grab_focus()
        self.prompt_button.set_icon_name("go-next-symbolic")
        self.prompt_button.disconnect(self.btn_handler)
        self.btn_handler = self.prompt_button.connect("clicked", self.on_send)
        
        
    def on_key_pressed(self, _a, keyval, _b, state):
        if keyval == Gdk.KEY_Return:
            if state & Gdk.ModifierType.SHIFT_MASK:
                return False
            self.on_send()
            return True
        return False

    def on_send(self, *args):
        pass

    def on_cancel(self, *args):
        pass