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/*
* Copyright (C) 2022 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.settings.dream;
import android.annotation.LayoutRes;
import android.content.Context;
import android.graphics.drawable.Drawable;
import android.text.TextUtils;
import android.util.SparseIntArray;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.TextView;
import androidx.annotation.NonNull;
import androidx.recyclerview.widget.RecyclerView;
import com.android.settings.R;
import com.android.settingslib.utils.ColorUtil;
import java.util.List;
/**
* RecyclerView adapter which displays list of items for the user to select.
*/
public class DreamAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {
private final List<IDreamItem> mItemList;
private int mLastSelectedPos = -1;
private boolean mEnabled = true;
private SparseIntArray mLayouts = new SparseIntArray();
/**
* View holder for each {@link IDreamItem}.
*/
private class DreamViewHolder extends RecyclerView.ViewHolder {
private final TextView mTitleView;
private final TextView mSummaryView;
private final ImageView mPreviewView;
private final ImageView mPreviewPlaceholderView;
private final Button mCustomizeButton;
private final Context mContext;
private final float mDisabledAlphaValue;
DreamViewHolder(View view, Context context) {
super(view);
mContext = context;
mPreviewView = view.findViewById(R.id.preview);
mPreviewPlaceholderView = view.findViewById(R.id.preview_placeholder);
mTitleView = view.findViewById(R.id.title_text);
mSummaryView = view.findViewById(R.id.summary_text);
mCustomizeButton = view.findViewById(R.id.customize_button);
mDisabledAlphaValue = ColorUtil.getDisabledAlpha(context);
}
/**
* Bind the view at the given position, populating the view with the provided data.
*/
public void bindView(IDreamItem item, int position) {
mTitleView.setText(item.getTitle());
final CharSequence summary = item.getSummary();
if (TextUtils.isEmpty(summary)) {
mSummaryView.setVisibility(View.GONE);
} else {
mSummaryView.setText(summary);
mSummaryView.setVisibility(View.VISIBLE);
}
final Drawable icon = item.isActive()
? mContext.getDrawable(R.drawable.ic_dream_check_circle)
: item.getIcon().mutate();
final int iconSize = mContext.getResources().getDimensionPixelSize(
R.dimen.dream_item_icon_size);
icon.setBounds(0, 0, iconSize, iconSize);
mTitleView.setCompoundDrawablesRelative(icon, null, null, null);
itemView.setOnClickListener(v -> {
item.onItemClicked();
if (mLastSelectedPos > -1 && mLastSelectedPos != position) {
notifyItemChanged(mLastSelectedPos);
}
notifyItemChanged(position);
});
if (item.isActive()) {
mLastSelectedPos = position;
itemView.setSelected(true);
itemView.setClickable(false);
} else {
itemView.setSelected(false);
itemView.setClickable(true);
}
if (item.viewType() != DreamItemViewTypes.NO_DREAM_ITEM) {
final Drawable previewImage = item.getPreviewImage();
if (previewImage != null) {
mPreviewView.setImageDrawable(previewImage);
mPreviewView.setClipToOutline(true);
mPreviewPlaceholderView.setVisibility(View.GONE);
} else {
mPreviewView.setImageDrawable(null);
mPreviewPlaceholderView.setVisibility(View.VISIBLE);
}
mCustomizeButton.setOnClickListener(v -> item.onCustomizeClicked());
mCustomizeButton.setVisibility(
item.allowCustomization() && mEnabled ? View.VISIBLE : View.GONE);
// This must be called AFTER itemView.setSelected above, in order to keep the
// customize button in an unselected state.
mCustomizeButton.setSelected(false);
mCustomizeButton.setContentDescription(
mContext.getResources().getString(R.string.customize_button_description,
item.getTitle()));
}
setEnabledStateOnViews(itemView, mEnabled);
}
/**
* Makes sure the view (and any children) get the enabled state changed.
*/
private void setEnabledStateOnViews(@NonNull View v, boolean enabled) {
v.setEnabled(enabled);
if (v instanceof ViewGroup) {
final ViewGroup vg = (ViewGroup) v;
for (int i = vg.getChildCount() - 1; i >= 0; i--) {
setEnabledStateOnViews(vg.getChildAt(i), enabled);
}
} else {
v.setAlpha(enabled ? 1 : mDisabledAlphaValue);
}
}
}
public DreamAdapter(SparseIntArray layouts, List<IDreamItem> itemList) {
mItemList = itemList;
mLayouts = layouts;
}
public DreamAdapter(@LayoutRes int layoutRes, List<IDreamItem> itemList) {
mItemList = itemList;
mLayouts.append(DreamItemViewTypes.DREAM_ITEM, layoutRes);
}
@NonNull
@Override
public RecyclerView.ViewHolder onCreateViewHolder(@NonNull ViewGroup viewGroup,
@DreamItemViewTypes.ViewType int viewType) {
View view = LayoutInflater.from(viewGroup.getContext())
.inflate(mLayouts.get(viewType), viewGroup, false);
return new DreamViewHolder(view, viewGroup.getContext());
}
@Override
public void onBindViewHolder(@NonNull RecyclerView.ViewHolder viewHolder, int i) {
((DreamViewHolder) viewHolder).bindView(mItemList.get(i), i);
}
@Override
public @DreamItemViewTypes.ViewType int getItemViewType(int position) {
return mItemList.get(position).viewType();
}
@Override
public int getItemCount() {
return mItemList.size();
}
/**
* Sets the enabled state of all items.
*/
public void setEnabled(boolean enabled) {
if (mEnabled != enabled) {
mEnabled = enabled;
notifyDataSetChanged();
}
}
/**
* Gets the enabled state of all items.
*/
public boolean getEnabled() {
return mEnabled;
}
}