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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.systemui.accessibility.floatingmenu;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import androidx.annotation.IntDef;
import androidx.annotation.NonNull;
import androidx.core.view.ViewCompat;
import androidx.core.view.accessibility.AccessibilityNodeInfoCompat;
import androidx.recyclerview.widget.RecyclerView;
import androidx.recyclerview.widget.RecyclerView.Adapter;
import com.android.internal.accessibility.common.ShortcutConstants.AccessibilityFragmentType;
import com.android.internal.accessibility.dialog.AccessibilityTarget;
import com.android.systemui.R;
import com.android.systemui.accessibility.floatingmenu.AccessibilityTargetAdapter.ViewHolder;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.util.List;
/**
* An adapter which shows the set of accessibility targets that can be performed.
*/
public class AccessibilityTargetAdapter extends Adapter<ViewHolder> {
private int mIconWidthHeight;
private int mItemPadding;
private final List<AccessibilityTarget> mTargets;
@IntDef({
ItemType.FIRST_ITEM,
ItemType.REGULAR_ITEM,
ItemType.LAST_ITEM
})
@Retention(RetentionPolicy.SOURCE)
@interface ItemType {
int FIRST_ITEM = 0;
int REGULAR_ITEM = 1;
int LAST_ITEM = 2;
}
public AccessibilityTargetAdapter(List<AccessibilityTarget> targets) {
mTargets = targets;
}
@NonNull
@Override
public ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, @ItemType int itemType) {
final View root = LayoutInflater.from(parent.getContext()).inflate(
R.layout.accessibility_floating_menu_item, parent,
/* attachToRoot= */ false);
if (itemType == ItemType.FIRST_ITEM) {
return new TopViewHolder(root);
}
if (itemType == ItemType.LAST_ITEM) {
return new BottomViewHolder(root);
}
return new ViewHolder(root);
}
@Override
public void onBindViewHolder(@NonNull ViewHolder holder, int position) {
final AccessibilityTarget target = mTargets.get(position);
holder.mIconView.setBackground(target.getIcon());
holder.updateIconWidthHeight(mIconWidthHeight);
holder.updateItemPadding(mItemPadding, getItemCount());
holder.itemView.setOnClickListener((v) -> target.onSelected());
holder.itemView.setStateDescription(target.getStateDescription());
holder.itemView.setContentDescription(target.getLabel());
final String clickHint = target.getFragmentType() == AccessibilityFragmentType.TOGGLE
? holder.itemView.getResources().getString(
R.string.accessibility_floating_button_action_double_tap_to_toggle)
: null;
ViewCompat.replaceAccessibilityAction(holder.itemView,
AccessibilityNodeInfoCompat.AccessibilityActionCompat.ACTION_CLICK,
clickHint, /* command= */ null);
}
@ItemType
@Override
public int getItemViewType(int position) {
if (position == 0) {
return ItemType.FIRST_ITEM;
}
if (position == (getItemCount() - 1)) {
return ItemType.LAST_ITEM;
}
return ItemType.REGULAR_ITEM;
}
@Override
public int getItemCount() {
return mTargets.size();
}
public void setIconWidthHeight(int iconWidthHeight) {
mIconWidthHeight = iconWidthHeight;
}
public void setItemPadding(int itemPadding) {
mItemPadding = itemPadding;
}
static class ViewHolder extends RecyclerView.ViewHolder {
final View mIconView;
ViewHolder(View itemView) {
super(itemView);
mIconView = itemView.findViewById(R.id.icon_view);
}
void updateIconWidthHeight(int newValue) {
final ViewGroup.LayoutParams layoutParams = mIconView.getLayoutParams();
if (layoutParams.width == newValue) {
return;
}
layoutParams.width = newValue;
layoutParams.height = newValue;
mIconView.setLayoutParams(layoutParams);
}
void updateItemPadding(int padding, int size) {
itemView.setPaddingRelative(padding, padding, padding, 0);
}
}
static class TopViewHolder extends ViewHolder {
TopViewHolder(View itemView) {
super(itemView);
}
@Override
void updateItemPadding(int padding, int size) {
final int paddingBottom = size <= 1 ? padding : 0;
itemView.setPaddingRelative(padding, padding, padding, paddingBottom);
}
}
static class BottomViewHolder extends ViewHolder {
BottomViewHolder(View itemView) {
super(itemView);
}
@Override
void updateItemPadding(int padding, int size) {
itemView.setPaddingRelative(padding, padding, padding, padding);
}
}
}
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