content: /*
   * Copyright (C) 2015 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.setupwizardlib.items;
  
  import android.content.Context;
  import android.content.res.TypedArray;
  import androidx.appcompat.widget.SwitchCompat;
  import android.util.AttributeSet;
  import android.view.View;
  import android.widget.CompoundButton;
  import com.android.setupwizardlib.R;
  
  /**
   * An item that is displayed with a switch, with methods to manipulate and listen to the checked
   * state of the switch. Note that by default, only click on the switch will change the on-off state.
   * To change the switch state when tapping on the text, use the click handlers of list view or
   * RecyclerItemAdapter with {@link #toggle(View)}.
   */
  public class SwitchItem extends Item implements CompoundButton.OnCheckedChangeListener {
  
    /** Listener for check state changes of this switch item. */
    public interface OnCheckedChangeListener {
  
      /**
       * Callback when checked state of a {@link SwitchItem} is changed.
       *
       * @see #setOnCheckedChangeListener(OnCheckedChangeListener)
       */
      void onCheckedChange(SwitchItem item, boolean isChecked);
    }
  
    private boolean checked = false;
    private OnCheckedChangeListener listener;
  
    /** Creates a default switch item. */
    public SwitchItem() {
      super();
    }
  
    /**
     * Creates a switch item. This constructor is used for inflation from XML.
     *
     * @param context The context which this item is inflated in.
     * @param attrs The XML attributes defined on the item.
     */
    public SwitchItem(Context context, AttributeSet attrs) {
      super(context, attrs);
      final TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.SuwSwitchItem);
      checked = a.getBoolean(R.styleable.SuwSwitchItem_android_checked, false);
      a.recycle();
    }
  
    /** Sets whether this item should be checked. */
    public void setChecked(boolean checked) {
      if (this.checked != checked) {
        this.checked = checked;
        notifyItemChanged();
        if (listener != null) {
          listener.onCheckedChange(this, checked);
        }
      }
    }
  
    /** @return True if this switch item is currently checked. */
    public boolean isChecked() {
      return checked;
    }
  
    @Override
    protected int getDefaultLayoutResource() {
      return R.layout.suw_items_switch;
    }
  
    /**
     * Toggle the checked state of the switch, without invalidating the entire item.
     *
     * @param view The root view of this item, typically from the argument of onItemClick.
     */
    public void toggle(View view) {
      checked = !checked;
      final SwitchCompat switchView = (SwitchCompat) view.findViewById(R.id.suw_items_switch);
      switchView.setChecked(checked);
    }
  
    @Override
    public void onBindView(View view) {
      super.onBindView(view);
      final SwitchCompat switchView = (SwitchCompat) view.findViewById(R.id.suw_items_switch);
      switchView.setOnCheckedChangeListener(null);
      switchView.setChecked(checked);
      switchView.setOnCheckedChangeListener(this);
      switchView.setEnabled(isEnabled());
    }
  
    /**
     * Sets a listener to listen for changes in checked state. This listener is invoked in both user
     * toggling the switch and calls to {@link #setChecked(boolean)}.
     */
    public void setOnCheckedChangeListener(OnCheckedChangeListener listener) {
      this.listener = listener;
    }
  
    @Override
    public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
      checked = isChecked;
      if (listener != null) {
        listener.onCheckedChange(this, isChecked);
      }
    }
  }
  