src/com/android/settings/IconPreferenceScreen.java

/*
 * Copyright (C) 2009 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;

import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.drawable.Drawable;
import android.support.v7.preference.Preference;
import android.support.v7.preference.PreferenceViewHolder;
import android.util.AttributeSet;
import android.widget.ImageView;
import android.widget.TextView;

public class IconPreferenceScreen extends Preference {

    private Drawable mIcon;

    // Whether or not the text and icon should be highlighted (as selected)
    private boolean mHighlight;

    public IconPreferenceScreen(Context context, AttributeSet attrs) {
        this(context, attrs, 0);
    }

    public IconPreferenceScreen(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
        setLayoutResource(R.layout.preference_icon);
        TypedArray a = context.obtainStyledAttributes(attrs,
                R.styleable.IconPreferenceScreen, defStyle, 0);
        mIcon = a.getDrawable(R.styleable.IconPreferenceScreen_icon);
    }

    @Override
    public void onBindViewHolder(PreferenceViewHolder view) {
        super.onBindViewHolder(view);
        ImageView imageView = (ImageView) view.findViewById(R.id.icon);
        if (imageView != null && mIcon != null) {
            imageView.setImageDrawable(mIcon);
        }
        TextView textView = (TextView) view.findViewById(android.R.id.title);
    }

    /**
     * Sets the icon for this Preference with a Drawable.
     *
     * @param icon The icon for this Preference
     */
    public void setIcon(Drawable icon) {
        if ((icon == null && mIcon != null) || (icon != null && !icon.equals(mIcon))) {
            mIcon = icon;
            notifyChanged();
        }
    }

    /**
     * Returns the icon of this Preference.
     *
     * @return The icon.
     * @see #setIcon(Drawable)
     */
    public Drawable getIcon() {
        return mIcon;
    }

    public void setHighlighted(boolean highlight) {
        mHighlight = highlight;
        notifyChanged();
    }
}