Gui Tutorial #4

package net.minecraft.src;

import java.awt.image.BufferedImage;
import org.lwjgl.opengl.GL11;

public class GuiWhatever extends GuiScreen
{

    private BufferedImage img;
    private int imgID = 1000;
    private int page = 0;
    private GuiButton disabled;

    public void initGui()
    {
         try {
             img = ModLoader.loadImage(mc.renderEngine, "/mods/test1.png");
             mc.renderEngine.setupTexture(img, imgID);
        } catch (Exception e) {
             e.printStackTrace();
        }
            controlList.clear();
            tabs();


            switch(page){
            case 0:
                controlList.add(new GuiButton(1, width / 2 - 6, height / 2 + 20, 78, 20, "Make it Rain!"));
                controlList.add(new GuiButton(2, width / 2 - 90, height / 2 + 20, 78, 20, "Stop the Rain!"));
                break;
            case 1:
                controlList.add(disabled = new GuiButton(1, width / 2 - 90, height / 2 + 20, 160, 20, "Disabled"));
                disabled.drawButton = true;
                disabled.enabled = false;
                break;
            }
    }

    private void tabs() {
        controlList.add(new GuiButton(3, width / 2 - 91, height / 2 - 56, 40, 20, "Page 1"));
        controlList.add(new GuiButton(4, width / 2 - 51, height / 2 - 56, 40, 20, "Page 2"));
        controlList.add(new GuiButton(5, width / 2 - 11, height / 2 - 56, 40, 20, "Page 3"));
        controlList.add(new GuiButton(6, width / 2 + 29, height / 2 - 56, 40, 20, "Page 4"));



    }

    protected void actionPerformed(GuiButton guibutton)
    {
        if(guibutton.id == 1)
        {
            ModLoader.getMinecraftInstance().theWorld.setRainStrength(5F);
            ModLoader.getMinecraftInstance().thePlayer.addChatMessage("Rain Started!");
        }
        if(guibutton.id == 2)
        {
            ModLoader.getMinecraftInstance().theWorld.setRainStrength(0F);
            ModLoader.getMinecraftInstance().thePlayer.addChatMessage("Rain Stopped!");
        }
        if(guibutton.id == 3)
        {
            page = 0;
            initGui();
        }
        if(guibutton.id == 4)
        {
            page = 1;
            initGui();
        }
        if(guibutton.id == 5)
        {
            page = 2;
            initGui();
        }
        if(guibutton.id == 6)
        {
            page = 3;
            initGui();
        }
    }

    public boolean doesGuiPauseGame()
    {
        return false;
    }

    public void drawScreen(int i, int j, float f)
    {
        drawDefaultBackground();
         int x = width / 2 - 95;
         int y = height / 2 - 60;
         try{
                 int wtf = mc.renderEngine.getTexture("/mods/test1.png");
                 GL11.glColor4f(1.0F, 1.0F, 1.0F, 1.0F);
                 mc.renderEngine.bindTexture(wtf);
                 drawTexturedModalRect(x, y, 0, 0, 176, 166);
        }
        finally {
        }
        GL11.glPushMatrix();
        GL11.glScalef(2.0F, 2.0F, 2.0F);
        drawCenteredString(fontRenderer, "Weather Controller", width / 4, height / 4 - 50, 0x44ff11);
        GL11.glPopMatrix();

        switch(page){
        case 0:
            drawString(fontRenderer, "Page 1", width / 2 - 90, height / 2 - 20, 0xCCCCCC);
            break;
        case 1:
            drawString(fontRenderer, "Page 2", width / 2 - 90, height / 2 - 20, 0xCCCCCC);
            break;
        case 2:
            drawString(fontRenderer, "Page 3", width / 2 - 90, height / 2 - 20, 0xCCCCCC);
            break;
        case 3:
            drawString(fontRenderer, "Page 4", width / 2 - 90, height / 2 - 20, 0xCCCCCC);
            break;
        }
        super.drawScreen(i, j, f);
    }
}