library/main/src/com/android/setupwizardlib/template/ColoredHeaderMixin.java

/*
 * Copyright (C) 2017 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.template;

import android.content.res.ColorStateList;
import android.content.res.TypedArray;
import android.util.AttributeSet;
import android.widget.TextView;
import com.android.setupwizardlib.R;
import com.android.setupwizardlib.TemplateLayout;

/**
 * A {@link Mixin} displaying a header text that can be set to different colors. This Mixin is
 * registered to the template using HeaderMixin.class, and can be retrieved using: {@code
 * (ColoredHeaderMixin) templateLayout.getMixin(HeaderMixin.class}.
 */
public class ColoredHeaderMixin extends HeaderMixin {

  /** {@inheritDoc} */
  public ColoredHeaderMixin(TemplateLayout layout, AttributeSet attrs, int defStyleAttr) {
    super(layout, attrs, defStyleAttr);

    final TypedArray a =
        layout
            .getContext()
            .obtainStyledAttributes(attrs, R.styleable.SuwColoredHeaderMixin, defStyleAttr, 0);

    // Set the header color
    final ColorStateList headerColor =
        a.getColorStateList(R.styleable.SuwColoredHeaderMixin_suwHeaderColor);
    if (headerColor != null) {
      setColor(headerColor);
    }

    a.recycle();
  }

  /**
   * Sets the color of the header text. This can also be set via XML using {@code
   * app:suwHeaderColor}.
   *
   * @param color The text color of the header.
   */
  public void setColor(ColorStateList color) {
    final TextView titleView = getTextView();
    if (titleView != null) {
      titleView.setTextColor(color);
    }
  }

  /** @return The current text color of the header. */
  public ColorStateList getColor() {
    final TextView titleView = getTextView();
    return titleView != null ? titleView.getTextColors() : null;
  }
}