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/*
* Copyright (C) 2020 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.car.rotaryplayground;
import android.graphics.drawable.Drawable;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import androidx.annotation.Nullable;
import androidx.fragment.app.Fragment;
import com.android.car.ui.FocusArea;
/** Fragment to demo a layout with cards that are FocusArea containers. */
public class RotaryCards extends Fragment {
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container,
@Nullable Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.rotary_cards, container, false);
// This button will be removed and immediately added back after click. So the focus
// highlight will jump to another view after rotary click.
FocusArea focusArea5 = view.findViewById(R.id.focus_area5);
Button button5a = view.findViewById(R.id.button_5a);
button5a.setOnClickListener(v -> {
int index = focusArea5.indexOfChild(button5a);
focusArea5.removeView(button5a);
focusArea5.addView(button5a, index);
});
// The background of this button will be changed after click. The focus highlight will stay
// on this Button after click.
Button button5b = view.findViewById(R.id.button_5b);
boolean[] stopped = {false};
button5b.setOnClickListener(v -> {
stopped[0] = !stopped[0];
Drawable drawable = view.getContext().getDrawable(
stopped[0] ? R.drawable.ic_stop : R.drawable.ic_play_arrow);
button5b.setBackground(drawable);
});
// This button will be removed and immediately added back after click. It's not focusable
// but its container is focusable. The focus highlight will stay on the container after
// click.
ViewGroup button5cContainer = view.findViewById(R.id.button_5c_container);
Button button5c = view.findViewById(R.id.button_5c);
button5c.setFocusable(false);
button5cContainer.setOnClickListener(v -> {
button5cContainer.removeView(button5c);
button5cContainer.addView(button5c, 0);
});
// This button will be removed then added back and request focus explicitly after click.
// So the focus highlight will jump to another view then jump back after rotary click.
Button button5d = view.findViewById(R.id.button_5d);
button5d.setOnClickListener(v -> {
boolean needRestoreFocus = button5d.isFocused();
int index = focusArea5.indexOfChild(button5d);
focusArea5.removeView(button5d);
focusArea5.addView(button5d, index);
if (needRestoreFocus) {
button5d.requestFocus();
}
});
// This button will be disabled after click. So the focus highlight will jump to another
// view after rotary click.
Button button5e = view.findViewById(R.id.button_5e);
button5e.setOnClickListener(v -> button5e.setEnabled(!button5e.isEnabled()));
// This button will appear disabled but is not disabled after click. So the focus
// highlight will stay after rotary click.
CustomButton button5f = view.findViewById(R.id.button_5f);
button5f.setOnClickListener(v -> button5f.setRotaryEnabled(!button5f.isRotaryEnabled()));
return view;
}
}
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