/*
 * This file is part of Applied Energistics 2.
 * Copyright (c) 2013 - 2014, AlgorithmX2, All rights reserved.
 *
 * Applied Energistics 2 is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Applied Energistics 2 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 Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with Applied Energistics 2.  If not, see <http://www.gnu.org/licenses/lgpl>.
 */

package appeng.client.gui.widgets;


import java.util.regex.Pattern;

import net.minecraft.client.Minecraft;
import net.minecraft.client.gui.GuiButton;
import net.minecraft.client.renderer.GlStateManager;
import net.minecraft.util.ResourceLocation;
import net.minecraft.util.text.translation.I18n;


public class GuiToggleButton extends GuiButton implements ITooltip
{
	private static final Pattern PATTERN_NEW_LINE = Pattern.compile( "\\n", Pattern.LITERAL );
	private final int iconIdxOn;
	private final int iconIdxOff;

	private final String displayName;
	private final String displayHint;

	private boolean isActive;

	public GuiToggleButton( final int x, final int y, final int on, final int off, final String displayName, final String displayHint )
	{
		super( 0, 0, 16, "" );
		this.iconIdxOn = on;
		this.iconIdxOff = off;
		this.displayName = displayName;
		this.displayHint = displayHint;
		this.xPosition = x;
		this.yPosition = y;
		this.width = 16;
		this.height = 16;
	}

	public void setState( final boolean isOn )
	{
		this.isActive = isOn;
	}

	@Override
	public void drawButton( final Minecraft par1Minecraft, final int par2, final int par3 )
	{
		if( this.visible )
		{
			final int iconIndex = this.getIconIndex();

			GlStateManager.color( 1.0f, 1.0f, 1.0f, 1.0f );
			par1Minecraft.renderEngine.bindTexture( new ResourceLocation( "appliedenergistics2", "textures/guis/states.png" ) );
			this.hovered = par2 >= this.xPosition && par3 >= this.yPosition && par2 < this.xPosition + this.width && par3 < this.yPosition + this.height;

			final int uv_y = (int) Math.floor( iconIndex / 16 );
			final int uv_x = iconIndex - uv_y * 16;

			this.drawTexturedModalRect( this.xPosition, this.yPosition, 256 - 16, 256 - 16, 16, 16 );
			this.drawTexturedModalRect( this.xPosition, this.yPosition, uv_x * 16, uv_y * 16, 16, 16 );
			this.mouseDragged( par1Minecraft, par2, par3 );
		}
	}

	private int getIconIndex()
	{
		return this.isActive ? this.iconIdxOn : this.iconIdxOff;
	}

	@Override
	public String getMessage()
	{
		if( this.displayName != null )
		{
			String name = I18n.translateToLocal( this.displayName );
			String value = I18n.translateToLocal( this.displayHint );

			if( name == null || name.isEmpty() )
			{
				name = this.displayName;
			}
			if( value == null || value.isEmpty() )
			{
				value = this.displayHint;
			}

			value = PATTERN_NEW_LINE.matcher( value ).replaceAll( "\n" );
			final StringBuilder sb = new StringBuilder( value );

			int i = sb.lastIndexOf( "\n" );
			if( i <= 0 )
			{
				i = 0;
			}
			while( i + 30 < sb.length() && ( i = sb.lastIndexOf( " ", i + 30 ) ) != -1 )
			{
				sb.replace( i, i + 1, "\n" );
			}

			return name + '\n' + sb;
		}
		return null;
	}

	@Override
	public int xPos()
	{
		return this.xPosition;
	}

	@Override
	public int yPos()
	{
		return this.yPosition;
	}

	@Override
	public int getWidth()
	{
		return 16;
	}

	@Override
	public int getHeight()
	{
		return 16;
	}

	@Override
	public boolean isVisible()
	{
		return this.visible;
	}
}