/**
 * Copyright 2012 Facebook
 *
 * 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.facebook.scrumptious;

import android.content.Context;
import android.graphics.Rect;
import android.util.AttributeSet;
import android.view.View;
import android.widget.ListAdapter;
import android.widget.ListView;

/**
 * A subclass of ListView that will always show the full list of elements.
 * This allows a ListView to be embedded inside a ScrollView.
 */
public class FullListView extends ListView {

    public FullListView(Context context) {
        super(context);
    }

    public FullListView(Context context, AttributeSet attributeSet) {
        super(context, attributeSet);
    }

    public FullListView(Context context, AttributeSet attributeSet, int defStyle) {
        super(context, attributeSet, defStyle);
    }

    @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
        int width = getMeasuredWidth();
        int height = 0;
        ListAdapter adapter = getAdapter();
        int count = adapter.getCount();
        for (int i = 0; i < count; i++) {
            View childView = adapter.getView(i, null, this);
            childView.measure(MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED),
                    MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED));
            height += childView.getMeasuredHeight();
        }
        Rect bgPadding = new Rect();
        getBackground().getPadding(bgPadding);
        height += (count - 1) * getDividerHeight() + bgPadding.top + bgPadding.bottom;
        setMeasuredDimension(width, height);
    }
}