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// ============================================================================
// Copyright (c) 2017-2019 Nawapunth Manusitthipol (NawaMan - http://nawaman.net).
// ----------------------------------------------------------------------------
// MIT License
// 
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
// 
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
// ============================================================================
package functionalj.event;

import functionalj.function.FuncUnit1;

public class Publisher {
    
    private final Topic topic = new Topic<>();
    private final FuncUnit1> onDone;
    
    public Publisher() {
        this(null);
    }
    public Publisher(FuncUnit1> onDone) {
        this.onDone = onDone;
    }
    
    public Publisher publish(DATA data) {
        if (topic.isActive())
            topic.publish(data);
        return this;
    }
    
    public void done() {
        if (!topic.isActive())
            return;
        
        topic.done();
        if (onDone != null) {
            onDone.accept(this);
        }
    }
    
    public Topic getTopic() {
        return topic;
    }
    
    public boolean isActive() {
        return topic.isActive();
    }
    
}