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package org.webswing.toolkit;

import java.awt.Image;
import java.awt.datatransfer.DataFlavor;
import java.awt.datatransfer.Transferable;
import java.awt.datatransfer.UnsupportedFlavorException;

import org.webswing.model.c2s.PasteEventMsgIn;
import org.webswing.toolkit.api.clipboard.BrowserTransferable;
import org.webswing.toolkit.util.Services;

public class WebClipboardTransferable implements BrowserTransferable {

	private Image image;
	private String text;
	private String html;

	public WebClipboardTransferable(PasteEventMsgIn paste) {
		if (paste != null) {
			if (paste.getImg() != null) {
				this.image = Services.getImageService().readFromDataUrl(paste.getImg());
			}
			this.text = paste.getText();
			this.html = paste.getHtml();
		}
	}

	public boolean isEmpty() {
		if (image == null && text == null && html == null) {
			return true;
		}
		return false;
	}

	public Object getTransferData(DataFlavor flavor) throws UnsupportedFlavorException {
		if (isDataFlavorSupported(flavor)) {
			if (DataFlavor.imageFlavor.equals(flavor)) {
				return image;
			}
			if (DataFlavor.stringFlavor.equals(flavor)) {
				return text;
			}
			if (WebClipboard.HTML_FLAVOR.equals(flavor)) {
				return html;
			}
		}
		throw new UnsupportedFlavorException(flavor);
	}

	public boolean isDataFlavorSupported(DataFlavor flavor) {
		if (DataFlavor.imageFlavor.equals(flavor)) {
			return image != null;
		}
		if (DataFlavor.stringFlavor.equals(flavor)) {
			return text != null;
		}
		if (WebClipboard.HTML_FLAVOR.equals(flavor)) {
			return html != null;
		}
		return false;
	}

	public DataFlavor[] getTransferDataFlavors() {
		return new DataFlavor[] { DataFlavor.imageFlavor, DataFlavor.stringFlavor, WebClipboard.HTML_FLAVOR };
	}

	public Image getImage() {
		return image;
	}

	public String getText() {
		return text;
	}

	public String getHtml() {
		return html;
	}
}