com.facebook.react.views.text.DefaultStyleValuesUtil.java Source code

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Here is the source code for com.facebook.react.views.text.DefaultStyleValuesUtil.java

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/*
 * Copyright (c) Facebook, Inc. and its affiliates.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 */

package com.facebook.react.views.text;

import android.content.Context;
import android.content.res.ColorStateList;
import android.content.res.Resources;
import android.content.res.TypedArray;

/** Utility class that access default values from style */
public final class DefaultStyleValuesUtil {

    private DefaultStyleValuesUtil() {
        throw new AssertionError("Never invoke this for an Utility class!");
    }

    /**
     * Utility method that returns the default text hint color as define by the theme
     *
     * @param context The Context
     * @return The ColorStateList for the hint text as defined in the style
     */
    public static ColorStateList getDefaultTextColorHint(Context context) {
        return getDefaultTextAttribute(context, android.R.attr.textColorHint);
    }

    /**
     * Utility method that returns the default text color as define by the theme
     *
     * @param context The Context
     * @return The ColorStateList for the text as defined in the style
     */
    public static ColorStateList getDefaultTextColor(Context context) {
        return getDefaultTextAttribute(context, android.R.attr.textColor);
    }

    /**
     * Utility method that returns the default text highlight color as define by the theme
     *
     * @param context The Context
     * @return The int for the highlight color as defined in the style
     */
    public static int getDefaultTextColorHighlight(Context context) {
        return getDefaultTextAttribute(context, android.R.attr.textColorHighlight).getDefaultColor();
    }

    private static ColorStateList getDefaultTextAttribute(Context context, int attribute) {
        Resources.Theme theme = context.getTheme();
        TypedArray textAppearances = null;
        try {
            textAppearances = theme.obtainStyledAttributes(new int[] { attribute });
            ColorStateList textColor = textAppearances.getColorStateList(0);
            return textColor;
        } finally {
            if (textAppearances != null) {
                textAppearances.recycle();
            }
        }
    }
}