import gi

gi.require_version('Gtk', '3.0')
from gi.repository import Gtk, GObject, GLib

class Main:
    def __init__(self):
        glade_file = "ui/app.glade"
        self.builder = Gtk.Builder()
        self.builder.add_from_file(glade_file)
        self.builder.connect_signals(self)

        self.mw = self.builder.get_object("main_window")
        self.stack = self.builder.get_object("mw_stack")
        self.stack_main = self.builder.get_object("box_main")
        self.stack_about = self.builder.get_object("box_about")
        self.stack_detail = self.builder.get_object("box_detail")
        self.detail_header = self.builder.get_object("box_detail_header")
        self.dlg_new = self.builder.get_object("dlg_new_file")
        self.listbox = self.builder.get_object("mw_list")
        self.dyn_btn_box = self.builder.get_object("dyn_btn_box")

        for row in ["First Button", "Second", "Third"]:
            self.add_button(row)

        # Note: the UI size request is 360x720, same resolution as
        # the Pinephone screen, but this is too big for the window to
        # be. As workaround, we reset the size request very small and maximize
        # the window.
        self.mw.set_size_request(360, 200)
        self.mw.maximize()
        self.mw.show_all()

        Gtk.main()

    def add_button(self, label):
        btn = Gtk.Button.new_with_label(label)
        btn.connect("clicked", lambda *args: self.goto_detail_screen(label))
        self.dyn_btn_box.pack_start(btn, expand=False, fill=True, padding=0)

    def goto_detail_screen(self, label):
        self.detail_header.set_text("Detail: " + label)
        self.stack.set_transition_type(Gtk.StackTransitionType.SLIDE_LEFT)
        self.stack.set_visible_child(self.stack_detail)

    ### methods below are Glade signal handlers

    def on_main_window_destroy(self, *args):
        Gtk.main_quit()

    def on_menu_new_activate(self, *args):
        print("new clicked")
        self.dlg_new.show()

    def on_menu_open_activate(self, *args):
        print("open clicked")

        print(dir(Gtk.FileChooserDialog))
        dialog = Gtk.FileChooserDialog(
            "Please choose a file",
            self.mw,
            Gtk.FileChooserAction.OPEN,
            (
                Gtk.STOCK_CANCEL,
                Gtk.ResponseType.CANCEL,
                Gtk.STOCK_OPEN,
                Gtk.ResponseType.OK,
            ),
        )

        filter = Gtk.FileFilter()
        filter.set_name("JPEG images")
        filter.add_mime_type("image/jpeg")
        dialog.add_filter(filter)

        filter_any = Gtk.FileFilter()
        filter_any.set_name("Any files")
        filter_any.add_pattern("*")
        dialog.add_filter(filter_any)

        resp = dialog.run()
        if resp == Gtk.ResponseType.OK:
            print("file chosen:", dialog.get_filename())
        elif resp == Gtk.ResponseType.CANCEL:
            print("canceled!")

        dialog.destroy()

    def on_menu_quit_activate(self, *args):
        self.mw.destroy()

    def on_btn_about_clicked(self, *args):
        print("about clicked")
        self.stack.set_transition_type(Gtk.StackTransitionType.SLIDE_LEFT)
        self.stack.set_visible_child(self.stack_about)

    def on_btn_about_back_clicked(self, *args):
        print("about back")
        self.stack.set_transition_type(Gtk.StackTransitionType.SLIDE_RIGHT)
        self.stack.set_visible_child(self.stack_main)

    def on_btn_detail_back_clicked(self, *args):
        self.on_btn_about_back_clicked(*args)

    def on_menu_save_activate(self, *args):
        pass

    def on_menu_home_activate(self, *args):
        self.on_btn_about_back_clicked(*args)

    def on_new_file_selected(self, *args):
        pass

if __name__ == "__main__":
    Main()