/*
 * This file is part of Applied Energistics 2.
 * Copyright (c) 2013 - 2015, 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;


import appeng.api.storage.data.IAEFluidStack;
import appeng.api.storage.data.IAEItemStack;
import appeng.client.gui.widgets.GuiCustomSlot;
import appeng.client.gui.widgets.GuiScrollbar;
import appeng.client.gui.widgets.ITooltip;
import appeng.client.me.InternalSlotME;
import appeng.client.me.SlotDisconnected;
import appeng.client.me.SlotME;
import appeng.client.render.StackSizeRenderer;
import appeng.container.AEBaseContainer;
import appeng.container.slot.*;
import appeng.container.slot.AppEngSlot.hasCalculatedValidness;
import appeng.core.AELog;
import appeng.core.AppEng;
import appeng.core.sync.network.NetworkHandler;
import appeng.core.sync.packets.PacketInventoryAction;
import appeng.core.sync.packets.PacketSwapSlots;
import appeng.fluids.client.render.FluidStackSizeRenderer;
import appeng.fluids.container.slots.IMEFluidSlot;
import appeng.helpers.InventoryAction;
import appeng.items.misc.ItemEncodedPattern;
import appeng.util.Platform;
import appeng.util.item.AEItemStack;
import com.google.common.base.Joiner;
import com.google.common.base.Stopwatch;
import com.google.common.collect.Lists;
import mezz.jei.api.gui.IGhostIngredientHandler;
import net.minecraft.client.Minecraft;
import net.minecraft.client.gui.Gui;
import net.minecraft.client.gui.GuiButton;
import net.minecraft.client.gui.inventory.GuiContainer;
import net.minecraft.client.renderer.BufferBuilder;
import net.minecraft.client.renderer.GlStateManager;
import net.minecraft.client.renderer.RenderHelper;
import net.minecraft.client.renderer.Tessellator;
import net.minecraft.client.renderer.texture.TextureAtlasSprite;
import net.minecraft.client.renderer.texture.TextureMap;
import net.minecraft.client.renderer.vertex.DefaultVertexFormats;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.inventory.ClickType;
import net.minecraft.inventory.Container;
import net.minecraft.inventory.Slot;
import net.minecraft.item.ItemStack;
import net.minecraft.util.ResourceLocation;
import net.minecraft.util.text.TextFormatting;
import net.minecraftforge.fluids.Fluid;
import net.minecraftforge.fluids.FluidStack;
import net.minecraftforge.fluids.FluidUtil;
import net.minecraftforge.fml.common.Optional;
import net.minecraftforge.items.SlotItemHandler;
import org.lwjgl.input.Keyboard;
import org.lwjgl.input.Mouse;
import org.lwjgl.opengl.GL11;
import yalter.mousetweaks.api.IMTModGuiContainer2;

import javax.annotation.Nonnull;
import java.awt.*;
import java.io.IOException;
import java.text.DecimalFormat;
import java.text.ParseException;
import java.util.List;
import java.util.*;
import java.util.concurrent.TimeUnit;

import static appeng.integration.modules.jei.JEIPlugin.aeGuiHandler;
import static appeng.integration.modules.jei.JEIPlugin.runtime;


@Optional.Interface(iface = "yalter.mousetweaks.api.IMTModGuiContainer2", modid = "mousetweaks")
public abstract class AEBaseGui extends GuiContainer implements IMTModGuiContainer2 {
    private final List<InternalSlotME> meSlots = new ArrayList<>();
    // drag y
    private final Set<Slot> drag_click = new HashSet<>();
    private final StackSizeRenderer stackSizeRenderer = new StackSizeRenderer();
    private final FluidStackSizeRenderer fluidStackSizeRenderer = new FluidStackSizeRenderer();
    private GuiScrollbar myScrollBar = null;
    private boolean disableShiftClick = false;
    private Stopwatch dbl_clickTimer = Stopwatch.createStarted();
    private ItemStack dbl_whichItem = ItemStack.EMPTY;
    private Slot bl_clicked;
    private Stopwatch lastClicked = Stopwatch.createStarted();
    private List<IGhostIngredientHandler.Target<Object>> hoveredIngredientTargets = new ArrayList<>();
    private Object bookmarkedIngredient;
    private boolean isDraggingJeiGhostItem;
    private boolean haltDragging = false;

    public void setJeiGhostItem(boolean jeiGhostItem) {
        isJeiGhostItem = jeiGhostItem;
    }

    private boolean isJeiGhostItem;

    public Object getBookmarkedIngredient() {
        return bookmarkedIngredient;
    }

    public List<GuiCustomSlot> getGuiSlots() {
        return guiSlots;
    }

    protected final List<GuiCustomSlot> guiSlots = new ArrayList<>();

    public AEBaseGui(final Container container) {
        super(container);
    }

    protected static String join(final Collection<String> toolTip, final String delimiter) {
        final Joiner joiner = Joiner.on(delimiter);

        return joiner.join(toolTip);
    }

    protected int getQty(final GuiButton btn) {
        try {
            final DecimalFormat df = new DecimalFormat("+#;-#");
            return df.parse(btn.displayString).intValue();
        } catch (final ParseException e) {
            return 0;
        }
    }

    @Override
    public void initGui() {
        super.initGui();

        final List<Slot> slots = this.getInventorySlots();
        final Iterator<Slot> i = slots.iterator();
        while (i.hasNext()) {
            if (i.next() instanceof SlotME) {
                i.remove();
            }
        }

        for (final InternalSlotME me : this.meSlots) {
            slots.add(new SlotME(me));
        }
    }

    private List<Slot> getInventorySlots() {
        return this.inventorySlots.inventorySlots;
    }

    @Override
    public void drawScreen(final int mouseX, final int mouseY, final float partialTicks) {
        super.drawDefaultBackground();
        super.drawScreen(mouseX, mouseY, partialTicks);

        GlStateManager.pushMatrix();
        GlStateManager.translate(this.guiLeft, this.guiTop, 0.0F);
        GlStateManager.enableDepth();
        for (final GuiCustomSlot c : this.guiSlots) {
            this.drawGuiSlot(c, mouseX, mouseY, partialTicks);
        }
        GlStateManager.disableDepth();
        for (final GuiCustomSlot c : this.guiSlots) {
            this.drawTooltip(c, mouseX - this.guiLeft, mouseY - this.guiTop);
        }
        GlStateManager.popMatrix();

        this.renderHoveredToolTip(mouseX, mouseY);

        for (final Object c : this.buttonList) {
            if (c instanceof ITooltip) {
                this.drawTooltip((ITooltip) c, mouseX, mouseY);
            }
        }
        GlStateManager.enableDepth();
        if (Platform.isModLoaded("jei")) {
            bookmarkedJEIghostItem(mouseX, mouseY);
        }
        GlStateManager.disableDepth();
    }

    public List<Rectangle> getJEIExclusionArea() {
        return Collections.emptyList();
    }

    @Optional.Method(modid = "jei")
    void bookmarkedJEIghostItem(final int mouseX, final int mouseY) {
        if (!isJeiGhostItem) {
            bookmarkedIngredient = runtime.getBookmarkOverlay().getIngredientUnderMouse();
        }

        if (bookmarkedIngredient != null) {
            hoveredIngredientTargets = aeGuiHandler.getTargets(this, bookmarkedIngredient, false);
            ItemStack dragItem = ItemStack.EMPTY;
            if (hoveredIngredientTargets.size() > 0) {
                if (isShiftKeyDown() && Mouse.isButtonDown(0) && this.lastClicked.elapsed(TimeUnit.MILLISECONDS) > 200) {
                    this.lastClicked = Stopwatch.createStarted();
                    aeGuiHandler.getTargets(this, bookmarkedIngredient, true);
                } else if (Mouse.isButtonDown(0) && this.lastClicked.elapsed(TimeUnit.MILLISECONDS) > 200) {
                    this.lastClicked = Stopwatch.createStarted();
                    if (bookmarkedIngredient instanceof ItemStack) {
                        dragItem = ((ItemStack) bookmarkedIngredient);
                    } else if (bookmarkedIngredient instanceof FluidStack) {
                        dragItem = FluidUtil.getFilledBucket(((FluidStack) bookmarkedIngredient));
                    }
                    mc.player.inventory.setItemStack(dragItem.copy());
                    this.isJeiGhostItem = true;
                }
                drawTargets(mouseX, mouseY);
            }
        }
    }

    private void drawTargets(int mouseX, int mouseY) {
        GlStateManager.disableLighting();
        for (IGhostIngredientHandler.Target target : hoveredIngredientTargets) {
            Rectangle area = target.getArea();
            Color color;
            if (area.contains(mouseX, mouseY)) {
                color = new Color(76, 201, 25, 128);
            } else {
                color = new Color(19, 201, 10, 64);
            }
            Gui.drawRect(area.x, area.y, area.x + area.width, area.y + area.height, color.getRGB());
        }
        GlStateManager.color(1f, 1f, 1f, 1f);
        GlStateManager.enableDepth();
    }

    protected void drawGuiSlot(GuiCustomSlot slot, int mouseX, int mouseY, float partialTicks) {
        if (slot.isSlotEnabled()) {
            final int left = slot.xPos();
            final int top = slot.yPos();
            final int right = left + slot.getWidth();
            final int bottom = top + slot.getHeight();

            slot.drawContent(this.mc, mouseX, mouseY, partialTicks);

            if (this.isPointInRegion(left, top, slot.getWidth(), slot.getHeight(), mouseX, mouseY) && slot.canClick(this.mc.player)) {
                GlStateManager.disableLighting();
                GlStateManager.colorMask(true, true, true, false);
                this.drawGradientRect(left, top, right, bottom, -2130706433, -2130706433);
                GlStateManager.colorMask(true, true, true, true);
                GlStateManager.enableLighting();
            }
        }
    }

    private void drawTooltip(ITooltip tooltip, int mouseX, int mouseY) {
        final int x = tooltip.xPos(); // ((GuiImgButton) c).x;
        int y = tooltip.yPos(); // ((GuiImgButton) c).y;

        if (x < mouseX && x + tooltip.getWidth() > mouseX && tooltip.isVisible()) {
            if (y < mouseY && y + tooltip.getHeight() > mouseY) {
                if (y < 15) {
                    y = 15;
                }

                final String msg = tooltip.getMessage();
                if (msg != null) {
                    this.drawTooltip(x + 11, y + 4, msg);
                }
            }
        }
    }

    protected void drawTooltip(int x, int y, String message) {
        String[] lines = message.split("\n");
        this.drawTooltip(x, y, Arrays.asList(lines));
    }

    protected void drawTooltip(int x, int y, List<String> lines) {
        if (lines.isEmpty()) {
            return;
        }

        // For an explanation of the formatting codes, see http://minecraft.gamepedia.com/Formatting_codes
        lines = Lists.newArrayList(lines); // Make a copy

        // Make the first line white
        lines.set(0, TextFormatting.WHITE + lines.get(0));

        // All lines after the first are colored gray
        for (int i = 1; i < lines.size(); i++) {
            lines.set(i, TextFormatting.GRAY + lines.get(i));
        }

        this.drawHoveringText(lines, x, y, this.fontRenderer);
    }

    @Override
    protected final void drawGuiContainerForegroundLayer(final int x, final int y) {
        final int ox = this.guiLeft; // (width - xSize) / 2;
        final int oy = this.guiTop; // (height - ySize) / 2;
        GlStateManager.color(1.0F, 1.0F, 1.0F, 1.0F);

        if (this.getScrollBar() != null) {
            this.getScrollBar().draw(this);
        }

        this.drawFG(ox, oy, x, y);
    }

    public abstract void drawFG(int offsetX, int offsetY, int mouseX, int mouseY);

    @Override
    protected final void drawGuiContainerBackgroundLayer(final float f, final int x, final int y) {
        final int ox = this.guiLeft; // (width - xSize) / 2;
        final int oy = this.guiTop; // (height - ySize) / 2;
        GlStateManager.color(1.0F, 1.0F, 1.0F, 1.0F);
        this.drawBG(ox, oy, x, y);

        final List<Slot> slots = this.getInventorySlots();
        for (final Slot slot : slots) {
            if (slot instanceof IOptionalSlot) {
                final IOptionalSlot optionalSlot = (IOptionalSlot) slot;
                if (optionalSlot.isRenderDisabled()) {
                    final AppEngSlot aeSlot = (AppEngSlot) slot;
                    if (aeSlot.isSlotEnabled()) {
                        this.drawTexturedModalRect(ox + aeSlot.xPos - 1, oy + aeSlot.yPos - 1, optionalSlot.getSourceX() - 1, optionalSlot.getSourceY() - 1, 18, 18);
                    } else {
                        GlStateManager.color(1.0F, 1.0F, 1.0F, 0.4F);
                        GlStateManager.enableBlend();
                        this.drawTexturedModalRect(ox + aeSlot.xPos - 1, oy + aeSlot.yPos - 1, optionalSlot.getSourceX() - 1, optionalSlot.getSourceY() - 1, 18, 18);
                        GlStateManager.color(1.0F, 1.0F, 1.0F, 1.0F);
                    }
                }
            }
        }

        for (final GuiCustomSlot slot : this.guiSlots) {
            slot.drawBackground(ox, oy);
        }
    }

    @Override
    protected void mouseClicked(final int xCoord, final int yCoord, final int btn) throws IOException {
        this.drag_click.clear();

        if (btn == 1) {
            for (final Object o : this.buttonList) {
                final GuiButton guibutton = (GuiButton) o;
                if (guibutton.mousePressed(this.mc, xCoord, yCoord)) {
                    super.mouseClicked(xCoord, yCoord, 0);
                    return;
                }
            }
        }

        for (GuiCustomSlot slot : this.guiSlots) {
            if (this.isPointInRegion(slot.xPos(), slot.yPos(), slot.getWidth(), slot.getHeight(), xCoord, yCoord) && slot.canClick(this.mc.player)) {
                slot.slotClicked(this.mc.player.inventory.getItemStack(), btn);
            }
        }

        if (this.getScrollBar() != null) {
            this.getScrollBar().click(this, xCoord - this.guiLeft, yCoord - this.guiTop);
        }

        super.mouseClicked(xCoord, yCoord, btn);
    }

    @Override
    protected void mouseReleased(int mouseX, int mouseY, int state) {
        this.drag_click.clear();
        this.haltDragging = false;

        super.mouseReleased(mouseX, mouseY, state);
    }

    @Override
    protected void mouseClickMove(final int x, final int y, final int c, final long d) {
        final Slot slot = this.getSlot(x, y);
        final ItemStack itemstack = this.mc.player.inventory.getItemStack();

        if (this.getScrollBar() != null) {
            this.getScrollBar().click(this, x - this.guiLeft, y - this.guiTop);
        }

        if (slot instanceof SlotFake && !itemstack.isEmpty()) {
            if (this.drag_click.add(slot)) {
                final PacketInventoryAction p = new PacketInventoryAction(c == 0 ? InventoryAction.PICKUP_OR_SET_DOWN : InventoryAction.PLACE_SINGLE, slot.slotNumber, 0);
                NetworkHandler.instance().sendToServer(p);
            }
        } else if (slot instanceof SlotDisconnected) {
            if (!haltDragging && this.drag_click.add(slot)) {
                if (!itemstack.isEmpty()) {
                    if (slot.getStack().isEmpty()) {
                        InventoryAction action;
                        if (slot.getSlotStackLimit() == 1) {
                            action = InventoryAction.SPLIT_OR_PLACE_SINGLE;
                        } else {
                            action = InventoryAction.PICKUP_OR_SET_DOWN;
                        }
                        final PacketInventoryAction p = new PacketInventoryAction(action, slot.getSlotIndex(), ((SlotDisconnected) slot).getSlot().getId());
                        NetworkHandler.instance().sendToServer(p);
                    }
                }
            } else if (isShiftKeyDown()) {
                for (final Slot dr : this.drag_click) {
                    InventoryAction action = null;
                    if (!slot.getStack().isEmpty()) {
                        action = InventoryAction.SHIFT_CLICK;
                    }
                    if (action != null) {
                        final PacketInventoryAction p = new PacketInventoryAction(action, dr.getSlotIndex(), ((SlotDisconnected) slot).getSlot().getId());
                        NetworkHandler.instance().sendToServer(p);
                    }
                }
            }
        } else {
            super.mouseClickMove(x, y, c, d);
        }
    }

    // TODO 1.9.4 aftermath - Whole ClickType thing, to be checked.
    @Override
    protected void handleMouseClick(final Slot slot, final int slotIdx, final int mouseButton, final ClickType clickType) {
        final EntityPlayer player = Minecraft.getMinecraft().player;

        if (this.isJeiGhostItem && isDraggingJeiGhostItem) {
            for (IGhostIngredientHandler.Target target : hoveredIngredientTargets) {
                Rectangle area = target.getArea();
                final int x = Mouse.getEventX() * this.width / this.mc.displayWidth;
                final int y = this.height - Mouse.getEventY() * this.height / this.mc.displayHeight - 1;

                if (area.contains(x, y)) {
                    target.accept(bookmarkedIngredient);
                    break;
                }
            }
            this.isJeiGhostItem = false;
            this.isDraggingJeiGhostItem = false;

            ItemStack dragItem = ItemStack.EMPTY;
            if (runtime.getBookmarkOverlay().getIngredientUnderMouse() != null) {
                bookmarkedJEIghostItem(Mouse.getX(), this.mc.displayHeight - Mouse.getY());
                if (bookmarkedIngredient instanceof ItemStack) {
                    dragItem = ((ItemStack) bookmarkedIngredient);
                } else if (bookmarkedIngredient instanceof FluidStack) {
                    dragItem = FluidUtil.getFilledBucket(((FluidStack) bookmarkedIngredient));
                }
                mc.player.inventory.setItemStack(dragItem.copy());
                this.isJeiGhostItem = true;
            } else {
                mc.player.inventory.setItemStack(dragItem);
            }
        } else if (slot instanceof SlotFake) {
            final InventoryAction action;
            action = mouseButton == 1 ? InventoryAction.SPLIT_OR_PLACE_SINGLE : InventoryAction.PICKUP_OR_SET_DOWN;

            if (this.drag_click.size() > 1) {
                return;
            }

            PacketInventoryAction p = new PacketInventoryAction(action, slotIdx, 0);
            NetworkHandler.instance().sendToServer(p);
            return;
        }

        if (slot instanceof SlotPatternTerm) {
            if (mouseButton == 6) {
                return; // prevent weird double clicks..
            }

            try {
                NetworkHandler.instance().sendToServer(((SlotPatternTerm) slot).getRequest(isShiftKeyDown()));
            } catch (final IOException e) {
                AELog.debug(e);
            }
        } else if (slot instanceof SlotCraftingTerm) {
            if (mouseButton == 6) {
                return; // prevent weird double clicks..
            }

            InventoryAction action = null;
            if (isShiftKeyDown()) {
                action = InventoryAction.CRAFT_SHIFT;
            } else {
                // Craft stack on right-click, craft single on left-click
                action = (mouseButton == 1) ? InventoryAction.CRAFT_STACK : InventoryAction.CRAFT_ITEM;
            }

            final PacketInventoryAction p = new PacketInventoryAction(action, slotIdx, 0);
            NetworkHandler.instance().sendToServer(p);

            return;
        }

        if (Keyboard.isKeyDown(Keyboard.KEY_SPACE)) {
            if (this.enableSpaceClicking()) {
                IAEItemStack stack = null;
                if (slot instanceof SlotME) {
                    stack = ((SlotME) slot).getAEStack();
                }

                int slotNum = this.getInventorySlots().size();

                if (!(slot instanceof SlotME) && slot != null) {
                    slotNum = slot.slotNumber;
                }

                ((AEBaseContainer) this.inventorySlots).setTargetStack(stack);
                final PacketInventoryAction p = new PacketInventoryAction(InventoryAction.MOVE_REGION, slotNum, 0);
                NetworkHandler.instance().sendToServer(p);
                return;
            }
        }

        if (slot instanceof SlotDisconnected) {
            if (this.drag_click.size() >= 1) {
                return;
            }

            InventoryAction action = null;

            switch (clickType) {
                case PICKUP: // pickup / set-down.
                    if (mouseButton == 1) {
                        action = InventoryAction.SPLIT_OR_PLACE_SINGLE;
                    } else {
                        action = InventoryAction.PICKUP_OR_SET_DOWN;
                    }
                    break;
                case QUICK_MOVE:
                    action = (mouseButton == 1) ? InventoryAction.PICKUP_SINGLE : InventoryAction.SHIFT_CLICK;
                    break;

                case CLONE: // creative dupe:

                    if (player.capabilities.isCreativeMode) {
                        action = InventoryAction.CREATIVE_DUPLICATE;
                    }

                    break;

                default:
                case THROW: // drop item:
            }

            if (action != null) {
                final PacketInventoryAction p = new PacketInventoryAction(action, slot.getSlotIndex(), ((SlotDisconnected) slot).getSlot().getId());
                NetworkHandler.instance().sendToServer(p);
            }

            return;
        }

        if (slot instanceof SlotME) {
            InventoryAction action = null;
            IAEItemStack stack = null;

            switch (clickType) {
                case PICKUP: // pickup / set-down.
                    action = (mouseButton == 1) ? InventoryAction.SPLIT_OR_PLACE_SINGLE : InventoryAction.PICKUP_OR_SET_DOWN;
                    stack = ((SlotME) slot).getAEStack();

                    if (stack != null && action == InventoryAction.PICKUP_OR_SET_DOWN && stack.getStackSize() == 0 && player.inventory.getItemStack().isEmpty()) {
                        action = InventoryAction.AUTO_CRAFT;
                    }

                    break;
                case QUICK_MOVE:
                    action = (mouseButton == 1) ? InventoryAction.PICKUP_SINGLE : InventoryAction.SHIFT_CLICK;
                    stack = ((SlotME) slot).getAEStack();
                    break;

                case CLONE: // creative dupe:

                    stack = ((SlotME) slot).getAEStack();
                    if (stack != null && stack.isCraftable()) {
                        action = InventoryAction.AUTO_CRAFT;
                    } else if (player.capabilities.isCreativeMode) {
                        final IAEItemStack slotItem = ((SlotME) slot).getAEStack();
                        if (slotItem != null) {
                            action = InventoryAction.CREATIVE_DUPLICATE;
                        }
                    }
                    break;

                default:
                case THROW: // drop item:
            }

            if (action != null) {
                ((AEBaseContainer) this.inventorySlots).setTargetStack(stack);
                final PacketInventoryAction p = new PacketInventoryAction(action, this.getInventorySlots().size(), 0);
                NetworkHandler.instance().sendToServer(p);
            }

            return;
        }

        if (!this.disableShiftClick && isShiftKeyDown() && mouseButton == 0) {
            this.disableShiftClick = true;

            if (this.dbl_whichItem.isEmpty() || this.bl_clicked != slot || this.dbl_clickTimer.elapsed(TimeUnit.MILLISECONDS) > 250) {
                // some simple double click logic.
                this.bl_clicked = slot;
                this.dbl_clickTimer = Stopwatch.createStarted();
                if (slot != null) {
                    this.dbl_whichItem = slot.getHasStack() ? slot.getStack().copy() : ItemStack.EMPTY;
                } else {
                    this.dbl_whichItem = ItemStack.EMPTY;
                }
            } else if (!this.dbl_whichItem.isEmpty()) {
                // a replica of the weird broken vanilla feature.

                final List<Slot> slots = this.getInventorySlots();
                for (final Slot inventorySlot : slots) {
                    if (inventorySlot != null && inventorySlot.canTakeStack(this.mc.player) && inventorySlot.getHasStack() && inventorySlot.isSameInventory(slot) && Container.canAddItemToSlot(inventorySlot, this.dbl_whichItem, true)) {
                        this.handleMouseClick(inventorySlot, inventorySlot.slotNumber, 0, ClickType.QUICK_MOVE);
                    }
                }
                this.dbl_whichItem = ItemStack.EMPTY;
            }

            this.disableShiftClick = false;
        }

        if (clickType == ClickType.PICKUP && isJeiGhostItem && !isDraggingJeiGhostItem) {
            this.isDraggingJeiGhostItem = true;
            return;
        }

        super.handleMouseClick(slot, slotIdx, mouseButton, clickType);
    }

    @Override
    protected boolean checkHotbarKeys(final int keyCode) {
        final Slot theSlot = this.getSlotUnderMouse();

        if (this.mc.player.inventory.getItemStack().isEmpty() && theSlot != null) {
            for (int j = 0; j < 9; ++j) {
                if (keyCode == this.mc.gameSettings.keyBindsHotbar[j].getKeyCode()) {
                    final List<Slot> slots = this.getInventorySlots();
                    for (final Slot s : slots) {
                        if (s.getSlotIndex() == j && s.inventory == ((AEBaseContainer) this.inventorySlots).getPlayerInv()) {
                            if (!s.canTakeStack(((AEBaseContainer) this.inventorySlots).getPlayerInv().player)) {
                                return false;
                            }
                        }
                    }

                    if (theSlot.getSlotStackLimit() == 64) {
                        this.handleMouseClick(theSlot, theSlot.slotNumber, j, ClickType.SWAP);
                        return true;
                    } else {
                        for (final Slot s : slots) {
                            if (s.getSlotIndex() == j && s.inventory == ((AEBaseContainer) this.inventorySlots).getPlayerInv()) {
                                NetworkHandler.instance().sendToServer(new PacketSwapSlots(s.slotNumber, theSlot.slotNumber));
                                return true;
                            }
                        }
                    }
                }
            }
        }

        return false;
    }

    @Override
    public void onGuiClosed() {
        super.onGuiClosed();
    }

    protected Slot getSlot(final int mouseX, final int mouseY) {
        final List<Slot> slots = this.getInventorySlots();
        for (final Slot slot : slots) {
            // isPointInRegion
            if (this.isPointInRegion(slot.xPos, slot.yPos, 16, 16, mouseX, mouseY)) {
                return slot;
            }
        }

        return null;
    }

    public abstract void drawBG(int offsetX, int offsetY, int mouseX, int mouseY);

    @Override
    public void handleMouseInput() throws IOException {
        super.handleMouseInput();

        final int i = Mouse.getEventDWheel();
        if (i != 0 && isShiftKeyDown()) {
            final int x = Mouse.getEventX() * this.width / this.mc.displayWidth;
            final int y = this.height - Mouse.getEventY() * this.height / this.mc.displayHeight - 1;
            this.mouseWheelEvent(x, y, i / Math.abs(i));
        } else if (i != 0 && this.getScrollBar() != null) {
            this.getScrollBar().wheel(i);
        }
    }

    protected void mouseWheelEvent(final int x, final int y, final int wheel) {
        final Slot slot = this.getSlot(x, y);
        if (slot instanceof SlotME) {
            final IAEItemStack item = ((SlotME) slot).getAEStack();
            if (item != null) {
                ((AEBaseContainer) this.inventorySlots).setTargetStack(item);
                final InventoryAction direction = wheel > 0 ? InventoryAction.ROLL_DOWN : InventoryAction.ROLL_UP;
                final int times = Math.abs(wheel);
                final int inventorySize = this.getInventorySlots().size();
                for (int h = 0; h < times; h++) {
                    final PacketInventoryAction p = new PacketInventoryAction(direction, inventorySize, 0);
                    NetworkHandler.instance().sendToServer(p);
                }
            }
        }
        if (slot instanceof SlotFake) {
            final ItemStack stack = slot.getStack();
            if (stack != ItemStack.EMPTY) {
                final PacketInventoryAction p;
                if (Keyboard.isKeyDown(Keyboard.KEY_LCONTROL) || Keyboard.isKeyDown(Keyboard.KEY_RCONTROL)) {
                    InventoryAction direction = wheel > 0 ? InventoryAction.DOUBLE : InventoryAction.HALVE;
                    p = new PacketInventoryAction(direction, slot.slotNumber, 0);
                } else {
                    InventoryAction direction = wheel > 0 ? InventoryAction.PLACE_SINGLE : InventoryAction.PICKUP_SINGLE;
                    p = new PacketInventoryAction(direction, slot.slotNumber, 0);
                }
                NetworkHandler.instance().sendToServer(p);
            }
        }
    }

    protected boolean enableSpaceClicking() {
        return true;
    }

    public void bindTexture(final String base, final String file) {
        final ResourceLocation loc = new ResourceLocation(base, "textures/" + file);
        this.mc.getTextureManager().bindTexture(loc);
    }

    protected void drawItem(final int x, final int y, final ItemStack is) {
        this.zLevel = 100.0F;
        this.itemRender.zLevel = 100.0F;

        RenderHelper.enableGUIStandardItemLighting();
        GlStateManager.enableDepth();
        this.itemRender.renderItemAndEffectIntoGUI(is, x, y);
        GlStateManager.disableDepth();

        this.itemRender.zLevel = 0.0F;
        this.zLevel = 0.0F;
    }

    protected String getGuiDisplayName(final String in) {
        return this.hasCustomInventoryName() ? this.getInventoryName() : in;
    }

    private boolean hasCustomInventoryName() {
        if (this.inventorySlots instanceof AEBaseContainer) {
            return ((AEBaseContainer) this.inventorySlots).getCustomName() != null;
        }
        return false;
    }

    private String getInventoryName() {
        return ((AEBaseContainer) this.inventorySlots).getCustomName();
    }

    /**
     * This overrides the base-class method through some access transformer hackery...
     */
    @Override
    public void drawSlot(Slot s) {
        if (s instanceof SlotME) {

            try {
                this.zLevel = 100.0F;
                this.itemRender.zLevel = 100.0F;

                if (!this.isPowered()) {
                    drawRect(s.xPos, s.yPos, 16 + s.xPos, 16 + s.yPos, 0x66111111);
                }

                this.zLevel = 0.0F;
                this.itemRender.zLevel = 0.0F;

                // Annoying but easier than trying to splice into render item
                super.drawSlot(new Size1Slot((SlotME) s));

                this.stackSizeRenderer.renderStackSize(this.fontRenderer, ((SlotME) s).getAEStack(), s.xPos, s.yPos);

            } catch (final Exception err) {
                AELog.warn("[AppEng] AE prevented crash while drawing slot: " + err);
            }

            return;
        } else if (s instanceof IMEFluidSlot && ((IMEFluidSlot) s).shouldRenderAsFluid()) {
            final IMEFluidSlot slot = (IMEFluidSlot) s;
            final IAEFluidStack fs = slot.getAEFluidStack();

            if (fs != null && this.isPowered()) {
                GlStateManager.disableLighting();
                GlStateManager.disableBlend();
                final Fluid fluid = fs.getFluid();
                Minecraft.getMinecraft().getTextureManager().bindTexture(TextureMap.LOCATION_BLOCKS_TEXTURE);
                final TextureAtlasSprite sprite = Minecraft.getMinecraft().getTextureMapBlocks().getAtlasSprite(fluid.getStill().toString());

                // Set color for dynamic fluids
                // Convert int color to RGB
                float red = (fluid.getColor() >> 16 & 255) / 255.0F;
                float green = (fluid.getColor() >> 8 & 255) / 255.0F;
                float blue = (fluid.getColor() & 255) / 255.0F;
                GlStateManager.color(red, green, blue);

                this.drawTexturedModalRect(s.xPos, s.yPos, sprite, 16, 16);
                GlStateManager.enableLighting();
                GlStateManager.enableBlend();

                this.fluidStackSizeRenderer.renderStackSize(this.fontRenderer, fs, s.xPos, s.yPos);
            } else if (!this.isPowered()) {
                drawRect(s.xPos, s.yPos, 16 + s.xPos, 16 + s.yPos, 0x66111111);
            }

            return;
        } else {
            try {
                final ItemStack is = s.getStack();
                if (s instanceof AppEngSlot && (((AppEngSlot) s).renderIconWithItem() || is.isEmpty()) && (((AppEngSlot) s).shouldDisplay())) {
                    final AppEngSlot aes = (AppEngSlot) s;
                    if (aes.getIcon() >= 0) {
                        this.bindTexture("guis/states.png");

                        try {
                            final int uv_y = (int) Math.floor(aes.getIcon() / 16);
                            final int uv_x = aes.getIcon() - uv_y * 16;

                            GlStateManager.enableBlend();
                            GlStateManager.disableLighting();
                            GlStateManager.enableTexture2D();
                            GlStateManager.blendFunc(GL11.GL_SRC_ALPHA, GL11.GL_ONE_MINUS_SRC_ALPHA);
                            GlStateManager.color(1.0f, 1.0f, 1.0f, 1.0f);
                            final float par1 = aes.xPos;
                            final float par2 = aes.yPos;
                            final float par3 = uv_x * 16;
                            final float par4 = uv_y * 16;

                            final Tessellator tessellator = Tessellator.getInstance();
                            final BufferBuilder vb = tessellator.getBuffer();

                            vb.begin(GL11.GL_QUADS, DefaultVertexFormats.POSITION_TEX_COLOR);

                            final float f1 = 0.00390625F;
                            final float f = 0.00390625F;
                            final float par6 = 16;
                            vb.pos(par1 + 0, par2 + par6, this.zLevel).tex((par3 + 0) * f, (par4 + par6) * f1).color(1.0f, 1.0f, 1.0f, aes.getOpacityOfIcon()).endVertex();
                            final float par5 = 16;
                            vb.pos(par1 + par5, par2 + par6, this.zLevel).tex((par3 + par5) * f, (par4 + par6) * f1).color(1.0f, 1.0f, 1.0f, aes.getOpacityOfIcon()).endVertex();
                            vb.pos(par1 + par5, par2 + 0, this.zLevel).tex((par3 + par5) * f, (par4 + 0) * f1).color(1.0f, 1.0f, 1.0f, aes.getOpacityOfIcon()).endVertex();
                            vb.pos(par1 + 0, par2 + 0, this.zLevel).tex((par3 + 0) * f, (par4 + 0) * f1).color(1.0f, 1.0f, 1.0f, aes.getOpacityOfIcon()).endVertex();
                            tessellator.draw();

                        } catch (final Exception err) {
                        }
                    }
                }

                if (!is.isEmpty() && s instanceof AppEngSlot) {
                    if (((AppEngSlot) s).getIsValid() == hasCalculatedValidness.NotAvailable) {
                        boolean isValid = s.isItemValid(is) || s instanceof SlotOutput || s instanceof AppEngCraftingSlot || s instanceof SlotDisabled || s instanceof SlotInaccessible || s instanceof SlotFake || s instanceof SlotRestrictedInput || s instanceof SlotDisconnected;
                        if (isValid && s instanceof SlotRestrictedInput) {
                            try {
                                isValid = ((SlotRestrictedInput) s).isValid(is, this.mc.world);
                            } catch (final Exception err) {
                                AELog.debug(err);
                            }
                        }
                        ((AppEngSlot) s).setIsValid(isValid ? hasCalculatedValidness.Valid : hasCalculatedValidness.Invalid);
                    }

                    if (((AppEngSlot) s).getIsValid() == hasCalculatedValidness.Invalid) {
                        this.zLevel = 100.0F;
                        this.itemRender.zLevel = 100.0F;

                        GlStateManager.disableLighting();
                        drawRect(s.xPos, s.yPos, 16 + s.xPos, 16 + s.yPos, 0x66ff6666);
                        GlStateManager.enableLighting();

                        this.zLevel = 0.0F;
                        this.itemRender.zLevel = 0.0F;
                    }
                }
                if (s instanceof SlotPlayerInv || s instanceof SlotPlayerHotBar) {
                    if (!is.isEmpty() && is.getItem() instanceof ItemEncodedPattern) {
                        final ItemEncodedPattern iep = (ItemEncodedPattern) is.getItem();
                        final ItemStack out = iep.getOutput(is);
                        if (!out.isEmpty()) {
                            AppEngSlot appEngSlot = ((AppEngSlot) s);
                            appEngSlot.setDisplay(true);
                            appEngSlot.setReturnAsSingleStack(true);

                            this.zLevel = 100.0F;
                            this.itemRender.zLevel = 100.0F;

                            if (!this.isPowered()) {
                                drawRect(s.xPos, s.yPos, 16 + s.xPos, 16 + s.yPos, 0x66111111);
                            }

                            this.zLevel = 0.0F;
                            this.itemRender.zLevel = 0.0F;

                            // Annoying but easier than trying to splice into render item
                            super.drawSlot(s);

                            if (isShiftKeyDown()) {
                                this.stackSizeRenderer.renderStackSize(this.fontRenderer, AEItemStack.fromItemStack(out), s.xPos, s.yPos);
                            } else {
                                super.drawSlot(s);
                            }
                            return;
                        }
                    } else {
                        super.drawSlot(s);
                    }
                } else if (s instanceof AppEngSlot) {
                    AppEngSlot appEngSlot = ((AppEngSlot) s);
                    appEngSlot.setDisplay(true);
                    appEngSlot.setReturnAsSingleStack(true);

                    this.zLevel = 100.0F;
                    this.itemRender.zLevel = 100.0F;

                    if (!this.isPowered()) {
                        drawRect(s.xPos, s.yPos, 16 + s.xPos, 16 + s.yPos, 0x66111111);
                    }

                    this.zLevel = 0.0F;
                    this.itemRender.zLevel = 0.0F;

                    // Annoying but easier than trying to splice into render item
                    super.drawSlot(s);

                    this.stackSizeRenderer.renderStackSize(this.fontRenderer, AEItemStack.fromItemStack(appEngSlot.getDisplayStack()), s.xPos, s.yPos);
                    return;
                } else {
                    super.drawSlot(s);
                }

                return;
            } catch (final Exception err) {
                AELog.warn("[AppEng] AE prevented crash while drawing slot: " + err);
            }
        }
        // do the usual for non-ME Slots.
        super.drawSlot(s);
    }

    protected boolean isPowered() {
        return true;
    }

    public void bindTexture(final String file) {
        final ResourceLocation loc = new ResourceLocation(AppEng.MOD_ID, "textures/" + file);
        this.mc.getTextureManager().bindTexture(loc);
    }

    protected GuiScrollbar getScrollBar() {
        return this.myScrollBar;
    }

    protected void setScrollBar(final GuiScrollbar myScrollBar) {
        this.myScrollBar = myScrollBar;
    }

    protected List<InternalSlotME> getMeSlots() {
        return this.meSlots;
    }

    @Override
    @Optional.Method(modid = "mousetweaks")
    public boolean MT_isMouseTweaksDisabled() {
        return false;
    }

    @Override
    @Optional.Method(modid = "mousetweaks")
    public boolean MT_isWheelTweakDisabled() {
        return true;
    }

    @Override
    @Optional.Method(modid = "mousetweaks")
    public Container MT_getContainer() {
        return this.inventorySlots;
    }

    @Override
    @Optional.Method(modid = "mousetweaks")
    public Slot MT_getSlotUnderMouse() {
        return getSlotUnderMouse();
    }

    @Override
    @Optional.Method(modid = "mousetweaks")
    public boolean MT_isCraftingOutput(Slot slot) {
        return slot instanceof SlotOutput || slot instanceof AppEngCraftingSlot;
    }

    @Override
    @Optional.Method(modid = "mousetweaks")
    public boolean MT_isIgnored(Slot slot) {
        return false;
    }

    @Override
    @Optional.Method(modid = "mousetweaks")
    public boolean MT_disableRMBDraggingFunctionality() {
        return false;
    }

}