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package io.qt.core;

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

/**
 * Convenience class that simplifies QFuture synchronization
 * Java wrapper for Qt class QFutureSynchronizer
 */
public final class QFutureSynchronizer
{
    static {
        QtJambi_LibraryUtilities.initialize();
    }
    
    
    /**
     * See QFutureSynchronizer::
     */
    public QFutureSynchronizer(){
        super();
    }
    
    /**
     * See QFutureSynchronizer::
     */
    public QFutureSynchronizer(QFuture future){
        super();
        addFuture(future);
    }
    
    /**
     * See QFutureSynchronizer::
     */
    @io.qt.QtUninvokable
    public final void addFuture(QFuture future){
        m_futures.add(future);
    }
    
    /**
     * See QFutureSynchronizer::
     */
    @io.qt.QtUninvokable
    public final boolean cancelOnWait(){
        return m_cancelOnWait;
    }
    
    /**
     * See QFutureSynchronizer::
     */
    @io.qt.QtUninvokable
    public final void clearFutures(){
    	m_futures.clear();
    }
    
    /**
     * See QFutureSynchronizer::
     */
    @io.qt.QtUninvokable
    public final void setCancelOnWait(boolean enabled){
    	this.m_cancelOnWait = enabled;
    }
    
    /**
     * See QFutureSynchronizer::
     */
    @io.qt.QtUninvokable
    public final void setFuture(QFuture future){
        waitForFinished();
        m_futures.clear();
        addFuture(future);
    }
    
    /**
     * See QFutureSynchronizer::
     */
    @io.qt.QtUninvokable
    public final void waitForFinished(){
        if (m_cancelOnWait) {
            for (int i = 0; i < m_futures.size(); ++i) {
                 m_futures.get(i).cancel();
            }
        }

        for (int i = 0; i < m_futures.size(); ++i) {
            m_futures.get(i).waitForFinished();
        }
    }
    
    /**
     * See QFutureSynchronizer::futures() const
     */
    @io.qt.QtUninvokable
    public final List> futures() {
        return Collections.unmodifiableList(m_futures);
    }
    
    private final List> m_futures = new ArrayList<>();
    private boolean m_cancelOnWait;
}