Source code for enamlnative.android.android_radio_group

"""
Copyright (c) 2017-2022, CodeLV.

Distributed under the terms of the MIT License.

The full license is in the file LICENSE, distributed with this software.

Created on May 20, 2017


"""
from atom.api import Typed
from enamlnative.widgets.radio_group import ProxyRadioGroup
from .android_linear_layout import AndroidLinearLayout, LinearLayout
from .bridge import JavaCallback, JavaMethod


class RadioGroup(LinearLayout):
    __nativeclass__ = "android.widget.RadioGroup"
    __signature__ = ["android.content.Context"]

    check = JavaMethod(int)
    clearCheck = JavaMethod()
    setOnCheckedChangeListener = JavaMethod(
        "android.widget.RadioGroup$OnCheckedChangeListener"
    )
    onCheckedChanged = JavaCallback("android.widget.RadioGroup", int)


[docs]class AndroidRadioGroup(AndroidLinearLayout, ProxyRadioGroup):
    """An Android implementation of an Enaml ProxyLinearLayout."""

    #: A reference to the widget created by the proxy.
    widget = Typed(RadioGroup)

    # -------------------------------------------------------------------------
    # Initialization API
    # -------------------------------------------------------------------------
[docs]    def create_widget(self):
        """Create the underlying widget."""
        self.widget = RadioGroup(self.get_context())

[docs]    def init_layout(self):
        """Set the checked state after all children have
        been populated.

        """
        super().init_layout()
        d = self.declaration
        w = self.widget
        if d.checked:
            self.set_checked(d.checked)
        else:
            #: Check if any of the children have "checked = True"
            for c in d.children:
                if c.checked:
                    d.checked = c

        w.setOnCheckedChangeListener(w.getId())
        w.onCheckedChanged.connect(self.on_checked_changed)

    # -------------------------------------------------------------------------
    # OnCheckedChangeListener API
    # -------------------------------------------------------------------------
[docs]    def on_checked_changed(self, group, checked_id):
        """Set the checked property based on the checked state
        of all the children

        """
        d = self.declaration
        if checked_id < 0:
            with self.widget.clearCheck.suppressed():
                d.checked = None
            return
        else:
            for c in self.children():
                if c.widget.getId() == checked_id:
                    with self.widget.check.suppressed():
                        d.checked = c.declaration
                    return

    # -------------------------------------------------------------------------
    # ProxyRadioGroup API
    # -------------------------------------------------------------------------
[docs]    def set_checked(self, checked):
        """Properly check the correct radio button."""
        if not checked:
            self.widget.clearCheck()
        else:
            #: Checked is a reference to the radio declaration
            #: so we need to get the ID of it
            rb = checked.proxy.widget
            if not rb:
                return
            self.widget.check(rb.getId())