/*
Yaaic - Yet Another Android IRC Client

Copyright 2009-2011 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 java.util.Collection;

import org.yaaic.model.Conversation;
import org.yaaic.model.Server;

import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.util.AttributeSet;
import android.view.View;

/**
 * The ConversationSwitcher - The small funny dots at the top ;)
 * 
 * @author Sebastian Kaspari <sebastian@yaaic.org>
 */
public class ConversationSwitcher extends View
{
    private Server server;
    private final Paint paint;

    /**
     * Create a new ConversationSwitcher
     * 
     * @param context The Context the view is running in, through which it can access the current theme, resources, etc.
     */
    public ConversationSwitcher(Context context, AttributeSet attributes)
    {
        super(context, attributes);

        paint = new Paint();
        paint.setStyle(Paint.Style.STROKE);
    }

    /**
     * Set the server whos conversations should be displayed
     * 
     * @param server
     */
    public void setServer(Server server)
    {
        this.server = server;
    }

    /**
     * Measure the size of the view
     * 
     * @param widthMeasureSpec
     * @param heightMeasureSpec
     */
    @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec)
    {
        setMeasuredDimension(MeasureSpec.getSize(widthMeasureSpec),    16);
    }

    /**
     * On draw
     */
    @Override
    protected void onDraw(Canvas canvas)
    {
        super.onDraw(canvas);

        if (server == null) {
            return;
        }

        Collection<Conversation> conversations = server.getConversations();

        int i       = 0;
        int width   = getWidth();
        int height  = getHeight();
        int circles = conversations.size();
        int startX  = (width / 2) - (((circles + 1) / 2) * 12);

        for (Conversation conversation : conversations) {
            switch (conversation.getStatus()) {
                case Conversation.STATUS_DEFAULT:
                    paint.setColor(0xFF888888);
                    break;
                case Conversation.STATUS_HIGHLIGHT:
                    paint.setColor(0xFF880000);
                    break;
                case Conversation.STATUS_MESSAGE:
                    paint.setColor(0xFF008800);
                    break;
                case Conversation.STATUS_SELECTED:
                    paint.setColor(0xFFFFFFFF);
                    break;
            }

            canvas.drawCircle(startX + 12 * i, height / 2, 4, paint);
            i++;
        }

    }
}