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package ars.file.office;

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

import org.w3c.dom.Element;
import org.xhtmlrenderer.render.BlockBox;
import org.xhtmlrenderer.layout.LayoutContext;
import org.xhtmlrenderer.extend.ReplacedElement;
import org.xhtmlrenderer.extend.UserAgentCallback;
import org.xhtmlrenderer.extend.ReplacedElementFactory;
import org.xhtmlrenderer.simple.extend.FormSubmissionListener;

/**
 * 连接替换元素工厂对象
 *
 * @author wuyongqiang
 */
public class ChainingReplacedElementFactory implements ReplacedElementFactory {
    private List replacedElementFactories = new ArrayList();

    public void addReplacedElementFactory(ReplacedElementFactory replacedElementFactory) {
        this.replacedElementFactories.add(0, replacedElementFactory);
    }

    @Override
    public ReplacedElement createReplacedElement(LayoutContext c, BlockBox box, UserAgentCallback uac, int cssWidth,
                                                 int cssHeight) {
        for (ReplacedElementFactory replacedElementFactory : this.replacedElementFactories) {
            ReplacedElement element = replacedElementFactory.createReplacedElement(c, box, uac, cssWidth, cssHeight);
            if (element != null) {
                return element;
            }
        }
        return null;
    }

    @Override
    public void reset() {
        for (ReplacedElementFactory replacedElementFactory : this.replacedElementFactories) {
            replacedElementFactory.reset();
        }
    }

    @Override
    public void remove(Element e) {
        for (ReplacedElementFactory replacedElementFactory : this.replacedElementFactories) {
            replacedElementFactory.remove(e);
        }
    }

    @Override
    public void setFormSubmissionListener(FormSubmissionListener listener) {
        for (ReplacedElementFactory replacedElementFactory : this.replacedElementFactories) {
            replacedElementFactory.setFormSubmissionListener(listener);
        }
    }

}