/*
Yaaic - Yet Another Android IRC Client

Copyright 2009-2010 Sebastian Kaspari

This file is part of Yaaic.

Yaaic 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.

Yaaic 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 Yaaic.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.yaaic.view;

import org.yaaic.adapter.MessageListAdapter;
import org.yaaic.listener.MessageClickListener;

import android.content.Context;
import android.graphics.Canvas;
import android.view.MotionEvent;
import android.view.View;
import android.widget.Gallery;
import android.widget.ListView;

/**
 * A customized ListView for Messages
 * 
 * @author Sebastian Kaspari <sebastian@yaaic.org>
 */
public class MessageListView extends ListView
{
    private boolean delegate = true;
    private final View parent;
    private int parentWidth;
    private int parentHeight;

    /**
     * Create a new MessageListView
     * 
     * @param context
     */
    public MessageListView(Context context, View parent)
    {
        super(context);

        this.parent = parent;
        this.setOnItemClickListener(MessageClickListener.getInstance());

        parentWidth = parent.getWidth();
        parentHeight = parent.getHeight();
    }

    /**
     * Should all touch events delegated?
     * 
     * @param delegate If true all touch events will be delegated, otherwise the listview will handle them
     */
    public void setDelegateTouchEvents(boolean delegate)
    {
        this.delegate = delegate;
    }

    /**
     * Handle touch screen motion events
     */
    @Override
    public boolean onTouchEvent(MotionEvent event)
    {
        if (delegate) {
            // We delegate the touch events to the underlying view
            return false;
        } else {
            return super.onTouchEvent(event);
        }
    }

    /**
     * On draw
     */
    @Override
    protected void onDraw(Canvas canvas)
    {
        if (delegate && (parent.getWidth() != parentWidth || parent.getHeight() != parentHeight)) {
            // parent size changed, resizing this child too

            parentWidth = parent.getWidth();
            parentHeight = parent.getHeight();

            this.setLayoutParams(new Gallery.LayoutParams(
                parent.getWidth() / 100 * 85,
                parent.getHeight()
            ));
        }

        super.onDraw(canvas);
    }

    /**
     * Get the adapter of this MessageListView
     * (Helper to avoid casting)
     * 
     * @return The MessageListAdapter
     */
    @Override
    public MessageListAdapter getAdapter()
    {
        return (MessageListAdapter) super.getAdapter();
    }
}