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ItemQuantity.java
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ItemQuantity.java
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package com.denizenscript.denizen.objects.properties.item;
import com.denizenscript.denizen.objects.ItemTag;
import com.denizenscript.denizencore.objects.core.ElementTag;
import com.denizenscript.denizencore.objects.Mechanism;
import com.denizenscript.denizencore.objects.ObjectTag;
import com.denizenscript.denizencore.objects.properties.Property;
import com.denizenscript.denizencore.tags.Attribute;
public class ItemQuantity implements Property {
public static boolean describes(ObjectTag item) {
// all items can have a quantity
return item instanceof ItemTag;
}
public static ItemQuantity getFrom(ObjectTag _item) {
if (!describes(_item)) {
return null;
}
else {
return new ItemQuantity((ItemTag) _item);
}
}
public static final String[] handledTags = new String[] {
"quantity", "qty", "max_stack"
};
public static final String[] handledMechs = new String[] {
"quantity"
};
private ItemQuantity(ItemTag _item) {
item = _item;
}
ItemTag item;
@Override
public String getAttribute(Attribute attribute) {
if (attribute == null) {
return null;
}
// <--[tag]
// @attribute <ItemTag.quantity>
// @returns ElementTag(Number)
// @mechanism ItemTag.quantity
// @group properties
// @description
// Returns the number of items in the ItemTag's itemstack.
// -->
if (attribute.startsWith("quantity") || attribute.startsWith("qty")) {
return new ElementTag(item.getItemStack().getAmount())
.getAttribute(attribute.fulfill(1));
}
// <--[tag]
// @attribute <ItemTag.max_stack>
// @returns ElementTag(Number)
// @group properties
// @description
// Returns the max number of this item possible in a single stack of this type.
// For use with <@link tag ItemTag.quantity> and <@link mechanism ItemTag.quantity>.
// -->
if (attribute.startsWith("max_stack")) {
return new ElementTag(item.getItemStack().getMaxStackSize())
.getAttribute(attribute.fulfill(1));
}
return null;
}
@Override
public String getPropertyString() {
if (item.getItemStack().getAmount() > 1) {
return String.valueOf(item.getItemStack().getAmount());
}
else {
return null;
}
}
@Override
public String getPropertyId() {
return "quantity";
}
@Override
public void adjust(Mechanism mechanism) {
// <--[mechanism]
// @object ItemTag
// @name quantity
// @input Element(Number)
// @description
// Changes the number of items in this stack.
// @tags
// <ItemTag.quantity>
// <ItemTag.max_stack>
// -->
if (mechanism.matches("quantity") && mechanism.requireInteger()) {
item.setAmount(mechanism.getValue().asInt());
}
}
}