/*
 *     Created by Angel Leon (@gubatron), Alden Torres (aldenml)
 *     Copyright (c) 2011-2026, FrostWire(R). All rights reserved.
 * 
 *     This program is free software: you can redistribute it and/or modify
 *     it under the terms of the GNU General Public License as published by
 *     the Free Software Foundation, either version 3 of the License, or
 *     (at your option) any later version.
 * 
 *     This program is distributed in the hope that it will be useful,
 *     but WITHOUT ANY WARRANTY; without even the implied warranty of
 *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *     GNU General Public License for more details.
 * 
 *     You should have received a copy of the GNU General Public License
 *     along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */

package org.team_hermes.wireshare.android.gui.views;

import android.content.Context;
import android.util.AttributeSet;
import android.widget.Checkable;
import android.widget.LinearLayout;

/**
 * This is a simple wrapper for {@link android.widget.LinearLayout} that implements
 * the {@link android.widget.Checkable} interface by keeping an internal 'checked'
 * state flag.
 * <p>
 * This can be used as the root view for a custom list item layout for
 * {@link android.widget.AbsListView} elements with a
 * {@link android.widget.AbsListView#setChoiceMode(int) choiceMode} set.
 */
public final class CheckableLinearLayout extends LinearLayout implements Checkable {

    private static final int[] CHECKED_STATE_SET = {android.R.attr.state_checked};

    private boolean mChecked = false;

    public CheckableLinearLayout(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    @Override
    public boolean isChecked() {
        return mChecked;
    }

    @Override
    public void setChecked(boolean b) {
        if (b != mChecked) {
            mChecked = b;
            refreshDrawableState();
        }
    }

    @Override
    public void toggle() {
        setChecked(!mChecked);
    }

    @Override
    public int[] onCreateDrawableState(int extraSpace) {
        final int[] drawableState = super.onCreateDrawableState(extraSpace + 1);
        if (isChecked()) {
            mergeDrawableStates(drawableState, CHECKED_STATE_SET);
        }
        return drawableState;
    }
}
