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A minimal state immediate mode graphical user interface toolkit.

There is a newer version: 3.3.4

/*
 * Copyright LWJGL. All rights reserved.
 * License terms: https://www.lwjgl.org/license
 * MACHINE GENERATED FILE, DO NOT EDIT
 */
package org.lwjgl.nuklear;

import javax.annotation.*;

import org.lwjgl.system.*;

import static org.lwjgl.system.MemoryUtil.*;

/**
 * Instances of this class may be passed to the {@link Nuklear#nk_combo_callback combo_callback} and {@link Nuklear#nk_combobox_callback combobox_callback} functions.
 * 
 * Type
 * 
 * 
 * float (*{@link #invoke}) (
 *     void *userdata,
 *     int selected,
 *     char const **item
 * )
 */
public abstract class NkItemGetter extends Callback implements NkItemGetterI {

    /**
     * Creates a {@code NkItemGetter} instance from the specified function pointer.
     *
     * @return the new {@code NkItemGetter}
     */
    public static NkItemGetter create(long functionPointer) {
        NkItemGetterI instance = Callback.get(functionPointer);
        return instance instanceof NkItemGetter
            ? (NkItemGetter)instance
            : new Container(functionPointer, instance);
    }

    /** Like {@link #create(long) create}, but returns {@code null} if {@code functionPointer} is {@code NULL}. */
    @Nullable
    public static NkItemGetter createSafe(long functionPointer) {
        return functionPointer == NULL ? null : create(functionPointer);
    }

    /** Creates a {@code NkItemGetter} instance that delegates to the specified {@code NkItemGetterI} instance. */
    public static NkItemGetter create(NkItemGetterI instance) {
        return instance instanceof NkItemGetter
            ? (NkItemGetter)instance
            : new Container(instance.address(), instance);
    }

    protected NkItemGetter() {
        super(CIF);
    }

    NkItemGetter(long functionPointer) {
        super(functionPointer);
    }

    private static final class Container extends NkItemGetter {

        private final NkItemGetterI delegate;

        Container(long functionPointer, NkItemGetterI delegate) {
            super(functionPointer);
            this.delegate = delegate;
        }

        @Override
        public float invoke(long userdata, int selected, long item) {
            return delegate.invoke(userdata, selected, item);
        }

    }

}