from kivy.app import App
from kivy.lang import Builder
from kivy.uix.screenmanager import ScreenManager, Screen
from kivy.properties import StringProperty

kv = """
#: import NoTransition kivy.uix.screenmanager.NoTransition

<Label>
    size_hint: (None, None)
    width: 200
    height: 50

<TextInput>
    size_hint: (None, None)
    width: 200
    height: 50
    multiline: False
    write_tab: False

<MainMenu>
    GridLayout:
        Button:
            text: "Add to Database"
            size: root.width * .2, root.height * .05
            pos: root.width * .05, root.height * .8
            font_size: root.height * .035
            on_release:
                root.manager.transition = NoTransition()
                root.manager.current = "DatabaseAdd"
        Button:
            text: "Search Database"
            size: root.width * .2, root.height * .05
            pos: root.width * .05, root.height * .7
            font_size: root.height * .035
            on_release:
                root.manager.transition = NoTransition()
                root.manager.current = "SearchDatabase"  # change to root.manager.current

<DatabaseAdd>
    name: "DatabaseAdd"
    name_first: id1
    name_last: id2
    #id3: id3
    #id4: id4
    #id5: id5
    #id6: id6
    #id7: id7
    #id8: id8
    AnchorLayout:
        width: root.width
        height: root.height
        ScrollView:
            do_scroll_y: True
            do_scroll_x: False
            size_hint: (None, None)
            size: (root.width * .8, root.height * .8)
            #width: root.width * .80
            #height: root.height * .8
            anchor_x: "center"
            anchor_y: "center"
            GridLayout:
                cols: 1
                GridLayout:
                    cols: 4
                    size_hint_y: None
                    height: self.minimum_height
                    Label:
                        #text: "First Name"
                        text: root.id1Label  # changed to root, and moved property
                    TextInput:
                        id: id1
                    Label:
                        text: "Last Name"
                    TextInput:
                        id: id2
                    #Label:
                        #text: "Value 3"
                    #TextInput:
                        #id: id3
                    #Label:
                        #text: "Value 4"
                    #TextInput:
                        #id: id4
                    #Label:
                        #text: "Value 5"
                    #TextInput:
                        #id: id5
                    #Label:
                        #text: "Value 6"
                    #TextInput:
                        #id: id6
                    #Label:
                        #text: "Value 7"
                    #TextInput:
                        #id: id7
                    #Label:
                        #text: "Value 8"
                    #TextInput:
                        #id: id8
                BoxLayout:
                    size_hint: None, None
                    size: self.minimum_size
                    Label:
                        width: (root.width * .8)/5
                    Button:
                        text: "Submit"
                        width: (root.width * .8)/5
                        on_press: root.press()
                    Label:
                        width: (root.width * .8)/5
                    Button:
                        text: "Clear"
                        width: (root.width * .8)/5
                        on_press: root.clear()
                    Label:
                        width: (root.width * .8)/5

<SearchDatabase>:
    Label:
        size_hint: 1, 1
        text: 'Placeholder for search database'

WindowManager:
    MainMenu:
    DatabaseAdd:
    SearchDatabase:
        name: "SearchDatabase"

"""


class WindowManager(ScreenManager):
    pass

class MainMenu(Screen):
    pass

class DatabaseAdd(Screen):
    id1Label = StringProperty('First Name')

    # def __init__(self, **kwargs):  # __init__ ? Not sure what you want to do here
    #     super().__init__(**kwargs)
    #     self.id1Label = StringProperty("First Name")  Property must be at class level
    #
    def press(self):
        name_first = self.name_first.text
        name_last = self.name_last.text
        print(name_first, name_last)
        self.clear()

    def clear(self):
        self.name_first.text = ""
        self.name_last.text = ""

class SearchDatabase(Screen):
    pass

class MainApp(App):
    def build(self):
        return Builder.load_string(kv)

if __name__ == "__main__":
    MainApp().run()