Package net.minecraft.screen

Class LecternScreenHandler

java.lang.Object

net.minecraft.screen.ScreenHandler

net.minecraft.screen.LecternScreenHandler

public class LecternScreenHandler
extends ScreenHandler

Mappings:

Namespace	Name
named	net/minecraft/screen/LecternScreenHandler
intermediary	net/minecraft/class_3916
official	cqn

Field Summary

Fields

Modifier and Type	Field	Description
static final int	BASE_JUMP_TO_PAGE_BUTTON_ID
private static final int	field_30824
private static final int	field_30825
private final Inventory	inventory
static final int	NEXT_PAGE_BUTTON_ID
static final int	PREVIOUS_PAGE_BUTTON_ID
private final PropertyDelegate	propertyDelegate
static final int	TAKE_BOOK_BUTTON_ID

Fields inherited from class net.minecraft.screen.ScreenHandler

EMPTY_SPACE_SLOT_INDEX, field_30731, field_30732, field_30733, field_30734, field_30735, field_30736, field_30737, slots, syncId

Constructor Summary

Constructors

Constructor	Description
LecternScreenHandler(int syncId)
LecternScreenHandler(int syncId, Inventory inventory, PropertyDelegate propertyDelegate)

Method Summary

Modifier and Type	Method	Description
boolean	canUse(PlayerEntity player)	Returns whether the screen handler can be used.
ItemStack	getBookItem()
int	getPage()
boolean	onButtonClick(PlayerEntity player, int id)	Called when player clicks a button with id.
ItemStack	quickMove(PlayerEntity player, int slot)	Quick-moves the stack at slot to other slots of the screen handler that belong to a different inventory or another section of the same inventory.
void	setProperty(int id, int value)	Sets the property with ID id to value.

Methods inherited from class net.minecraft.screen.ScreenHandler

addListener, addProperties, addProperty, addSlot, calculateComparatorOutput, calculateComparatorOutput, calculateStackSize, canInsertIntoSlot, canInsertIntoSlot, canInsertItemIntoSlot, canUse, checkDataCount, checkSize, copySharedSlots, disableSyncing, dropInventory, enableSyncing, endQuickCraft, getCursorStack, getRevision, getSlot, getSlotIndex, getStacks, getType, insertItem, isValid, nextRevision, onClosed, onContentChanged, onSlotClick, packQuickCraftData, removeListener, sendContentUpdates, setCursorStack, setPreviousCursorStack, setPreviousTrackedSlot, setPreviousTrackedSlotMutable, setStackInSlot, shouldQuickCraftContinue, syncState, unpackQuickCraftButton, unpackQuickCraftStage, updateSlotStacks, updateSyncHandler, updateToClient

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

field_30824

private static final int field_30824

See Also:

• Constant Field Values

Mappings:

Namespace	Name	Mixin selector
named	field_30824	Lnet/minecraft/screen/LecternScreenHandler;field_30824:I
intermediary	field_30824	Lnet/minecraft/class_3916;field_30824:I
official	o	Lcqn;o:I

field_30825

private static final int field_30825

See Also:

• Constant Field Values

Mappings:

Namespace	Name	Mixin selector
named	field_30825	Lnet/minecraft/screen/LecternScreenHandler;field_30825:I
intermediary	field_30825	Lnet/minecraft/class_3916;field_30825:I
official	p	Lcqn;p:I

PREVIOUS_PAGE_BUTTON_ID

public static final int PREVIOUS_PAGE_BUTTON_ID

See Also:

• Constant Field Values

Mappings:

Namespace	Name	Mixin selector
named	PREVIOUS_PAGE_BUTTON_ID	Lnet/minecraft/screen/LecternScreenHandler;PREVIOUS_PAGE_BUTTON_ID:I
intermediary	field_30820	Lnet/minecraft/class_3916;field_30820:I
official	k	Lcqn;k:I

NEXT_PAGE_BUTTON_ID

public static final int NEXT_PAGE_BUTTON_ID

See Also:

• Constant Field Values

Mappings:

Namespace	Name	Mixin selector
named	NEXT_PAGE_BUTTON_ID	Lnet/minecraft/screen/LecternScreenHandler;NEXT_PAGE_BUTTON_ID:I
intermediary	field_30821	Lnet/minecraft/class_3916;field_30821:I
official	l	Lcqn;l:I

TAKE_BOOK_BUTTON_ID

public static final int TAKE_BOOK_BUTTON_ID

See Also:

• Constant Field Values

Mappings:

Namespace	Name	Mixin selector
named	TAKE_BOOK_BUTTON_ID	Lnet/minecraft/screen/LecternScreenHandler;TAKE_BOOK_BUTTON_ID:I
intermediary	field_30822	Lnet/minecraft/class_3916;field_30822:I
official	m	Lcqn;m:I

BASE_JUMP_TO_PAGE_BUTTON_ID

public static final int BASE_JUMP_TO_PAGE_BUTTON_ID

See Also:

• Constant Field Values

Mappings:

Namespace	Name	Mixin selector
named	BASE_JUMP_TO_PAGE_BUTTON_ID	Lnet/minecraft/screen/LecternScreenHandler;BASE_JUMP_TO_PAGE_BUTTON_ID:I
intermediary	field_30823	Lnet/minecraft/class_3916;field_30823:I
official	n	Lcqn;n:I

inventory

private final Inventory inventory

Mappings:

Namespace	Name	Mixin selector
named	inventory	Lnet/minecraft/screen/LecternScreenHandler;inventory:Lnet/minecraft/inventory/Inventory;
intermediary	field_17313	Lnet/minecraft/class_3916;field_17313:Lnet/minecraft/class_1263;
official	q	Lcqn;q:Lbqa;

propertyDelegate

private final PropertyDelegate propertyDelegate

Mappings:

Namespace	Name	Mixin selector
named	propertyDelegate	Lnet/minecraft/screen/LecternScreenHandler;propertyDelegate:Lnet/minecraft/screen/PropertyDelegate;
intermediary	field_17314	Lnet/minecraft/class_3916;field_17314:Lnet/minecraft/class_3913;
official	r	Lcqn;r:Lcpt;

Constructor Details

LecternScreenHandler

public LecternScreenHandler(int syncId)

Mappings:

Namespace	Name	Mixin selector
named	<init>	Lnet/minecraft/screen/LecternScreenHandler;<init>(I)V
intermediary	<init>	Lnet/minecraft/class_3916;<init>(I)V
official	<init>	Lcqn;<init>(I)V

LecternScreenHandler

public LecternScreenHandler(int syncId,
 Inventory inventory,
 PropertyDelegate propertyDelegate)

Mappings:

Namespace	Name	Mixin selector
named	<init>	Lnet/minecraft/screen/LecternScreenHandler;<init>(ILnet/minecraft/inventory/Inventory;Lnet/minecraft/screen/PropertyDelegate;)V
intermediary	<init>	Lnet/minecraft/class_3916;<init>(ILnet/minecraft/class_1263;Lnet/minecraft/class_3913;)V
official	<init>	Lcqn;<init>(ILbqa;Lcpt;)V

Method Details

onButtonClick

public boolean onButtonClick(PlayerEntity player,
 int id)

Called when player clicks a button with id.

"Button click" is an abstract concept; it does not have to be triggered by a button. Examples of button clicks include selecting a recipe for a stonecutter, turning a page of a lectern's book, or selecting an enchantment on an enchanting table. Buttons are identified by an integer.

Overrides:

onButtonClick in class ScreenHandler

Returns:

whether the button click is handled successfully

Implementation Note:

This is normally only called by the server; however, screens that use buttons can call this on the client.

Mappings:

Namespace	Name	Mixin selector
named	onButtonClick	Lnet/minecraft/screen/ScreenHandler;onButtonClick(Lnet/minecraft/entity/player/PlayerEntity;I)Z
intermediary	method_7604	Lnet/minecraft/class_1703;method_7604(Lnet/minecraft/class_1657;I)Z
official	a	Lcpi;a(Lcml;I)Z

quickMove

public ItemStack quickMove(PlayerEntity player,
 int slot)

Quick-moves the stack at slot to other slots of the screen handler that belong to a different inventory or another section of the same inventory. For example, items can be quick-moved between a chest's slots and the player inventory or between the main player inventory and the hotbar.

Subclasses should call ScreenHandler.insertItem(net.minecraft.item.ItemStack, int, int, boolean), and if the insertion was successful, clear the slot (if the stack is exhausted) or mark it as dirty. See the vanilla subclasses for basic implementation.

Quick-moving is also known as "shift-clicking" since it's usually triggered using Shift+left click.

Specified by:

quickMove in class ScreenHandler

Parameters:

slot - the index of the slot to quick-move from

Returns:

ItemStack.EMPTY when no stack can be transferred, otherwise the original stack

See Also:

• ScreenHandler.insertItem(net.minecraft.item.ItemStack, int, int, boolean)

Mappings:

Namespace	Name	Mixin selector
named	quickMove	Lnet/minecraft/screen/ScreenHandler;quickMove(Lnet/minecraft/entity/player/PlayerEntity;I)Lnet/minecraft/item/ItemStack;
intermediary	method_7601	Lnet/minecraft/class_1703;method_7601(Lnet/minecraft/class_1657;I)Lnet/minecraft/class_1799;
official	b	Lcpi;b(Lcml;I)Lcud;

setProperty

public void setProperty(int id,
 int value)

Sets the property with ID id to value.

Subclasses can call ScreenHandler.sendContentUpdates() to manually sync the change to the client.

Overrides:

setProperty in class ScreenHandler

Mappings:

Namespace	Name	Mixin selector
named	setProperty	Lnet/minecraft/screen/ScreenHandler;setProperty(II)V
intermediary	method_7606	Lnet/minecraft/class_1703;method_7606(II)V
official	a	Lcpi;a(II)V

canUse

public boolean canUse(PlayerEntity player)

Returns whether the screen handler can be used.

Subclasses should call #canUse(ScreenHandlerContext, PlayerEntity, Block)} or implement the check itself. The implementation should check that the player is near the screen handler's source position (e.g. block position) and that the source (e.g. block) is not destroyed.

Specified by:

canUse in class ScreenHandler

Returns:

whether the screen handler can be used

Mappings:

Namespace	Name	Mixin selector
named	canUse	Lnet/minecraft/screen/ScreenHandler;canUse(Lnet/minecraft/entity/player/PlayerEntity;)Z
intermediary	method_7597	Lnet/minecraft/class_1703;method_7597(Lnet/minecraft/class_1657;)Z
official	b	Lcpi;b(Lcml;)Z

getBookItem

public ItemStack getBookItem()

Mappings:

Namespace	Name	Mixin selector
named	getBookItem	Lnet/minecraft/screen/LecternScreenHandler;getBookItem()Lnet/minecraft/item/ItemStack;
intermediary	method_17418	Lnet/minecraft/class_3916;method_17418()Lnet/minecraft/class_1799;
official	l	Lcqn;l()Lcud;

getPage

public int getPage()

Mappings:

Namespace	Name	Mixin selector
named	getPage	Lnet/minecraft/screen/LecternScreenHandler;getPage()I
intermediary	method_17419	Lnet/minecraft/class_3916;method_17419()I
official	m	Lcqn;m()I