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package io.qt.core;

import java.util.Objects;

import io.qt.NativeAccess;
import io.qt.QNoImplementationException;
import io.qt.QtObject;

/**
 * Way to store computation results to be accessed by QFuture
 * Java wrapper for Qt class QPromise
 */
public final class QPromise
{
    static {
        QtJambi_LibraryUtilities.initialize();
    }
    
    private static class NativeInstance extends QtObject{
        @NativeAccess
		private NativeInstance(QPrivateConstructor p) {
			super(p);
		}
        
        @NativeAccess
        private QPromise promise;
    }
    
    private final io.qt.core.QFutureInterfaceBase d;
    
    @NativeAccess
    private NativeInstance nativeInstance;
    
    public static QPromise createVoidPromise() {
    	return new QPromise<>(true);
    }
    
    /**
     * See QPromise::QPromise()
     */
    public QPromise(){
        super();
        d = new QFutureInterface<>();
        registerPromise(this);
    }
    
    private void registerPromise(QPromise promise) {
    	QFutureInterfaceBase d = promise.d;
        QtJambi_LibraryUtilities.internal.registerCleaner(promise, ()->{if(!d.isDisposed()){
        	d.reportFinished();
        }});
    }
    
	private QPromise(boolean isVoid){
        super();
        d = QFutureInterface.createVoidFutureInterface();
        registerPromise(this);
    }
    
    public QPromise(io.qt.core.QFutureInterface other){
    	d = other.clone();
    	registerPromise(this);
    }
    
    @NativeAccess
    private QPromise(io.qt.core.QFutureInterfaceBase other, boolean internal){
    	d = Objects.requireNonNull(other);
    }
    
    /**
     * See QPromise::finish()
     */
    @io.qt.QtUninvokable
    public final void finish(){
    	d.reportFinished();
    }
    
    /**
     * See QPromise::future()const
     */
    @io.qt.QtUninvokable
    public final io.qt.core.QFuture future(){
    	return new QFuture<>(d.clone(), true);
    }
    
    /**
     * See QPromise::isCanceled()const
     */
    @io.qt.QtUninvokable
    public final boolean isCanceled(){
    	return d.isCanceled();
    }
    
    /**
     * See QPromise::setProgressRange(int,int)
     */
    @io.qt.QtUninvokable
    public final void setProgressRange(int minimum, int maximum){
    	d.setProgressRange(minimum, maximum);
    }
    
    /**
     * See QPromise::setProgressValue(int)
     */
    @io.qt.QtUninvokable
    public final void setProgressValue(int progressValue){
    	d.setProgressValue(progressValue);
    }
    
    /**
     * See QPromise::setProgressValueAndText(int,QString)
     */
    @io.qt.QtUninvokable
    public final void setProgressValueAndText(int progressValue, java.lang.String progressText){
    	d.setProgressValueAndText(progressValue, progressText);
    }
    
    /**
     * See QPromise::start()
     */
    @io.qt.QtUninvokable
    public final void start(){
    	d.reportStarted();
    }
    
    /**
     * See QPromise::suspendIfRequested()
     */
    @io.qt.QtUninvokable
    public final void suspendIfRequested(){
    	d.suspendIfRequested();
    }
    
    /**
     * See QPromise::swap(QPromise<T>&)
     */
    @io.qt.QtUninvokable
    public final void swap(io.qt.core.QPromise other){
        java.util.Objects.requireNonNull(other, "Argument 'other': null not expected.");
        d.swap(other.d);
    }
    
    @io.qt.QtUninvokable
    public final void setException(Throwable e) {
        d.reportException(e);
    }
    
    @io.qt.QtUninvokable
    public final boolean addResult(T result) {
        try {
			return QFutureInterface.reportResult(QtJambi_LibraryUtilities.internal.nativeId(d), result, -1);
		} catch (QNoImplementationException e) {
			throw new QNoImplementationException("addResult(T) not available for QPromise.");
		}
    }
    
    @io.qt.QtUninvokable
    public final boolean addResult(T result, int index) {
    	try{
    		return QFutureInterface.reportResult(QtJambi_LibraryUtilities.internal.nativeId(d), result, index);
    	} catch (QNoImplementationException e) {
			throw new QNoImplementationException("addResult(T, int) not available for QPromise.");
		}
    }
}