package org.gcube.portlets.user.td.columnwidget.client.custom;

import com.google.gwt.core.client.GWT;
import com.google.gwt.resources.client.ImageResource;
import com.google.gwt.safehtml.shared.SafeHtmlBuilder;
import com.sencha.gxt.core.client.dom.XElement;
import com.sencha.gxt.widget.core.client.Dialog;
import com.sencha.gxt.widget.core.client.container.BoxLayoutContainer.BoxLayoutPack;

public class ErrorMessageDialog extends Dialog {

	public interface ErrorMessageDialogAppearance {

		XElement getMessageElement(XElement parent);

		XElement getExtendedElement(XElement parent);
		
		ImageResource getWindowIcon();

		void render(SafeHtmlBuilder sb);
	}

	protected ImageResource icon;
	protected ErrorMessageDialogAppearance contentAppearance;

	public ErrorMessageDialog(String headingHtml, String messageHtml,
			String extendedHtml) {
		this(headingHtml, messageHtml, extendedHtml, (WindowAppearance) GWT
				.create(WindowAppearance.class),
				(ErrorMessageDialogAppearance) GWT
						.create(DefaultErrorMessageDialogApperance.class));
	}

	/**
	 * Creates a message box with the specified heading HTML, message HTML and
	 * appearance. It is the caller's responsibility to ensure the HTML is CSS
	 * safe.
	 * 
	 * @param headingHtml
	 *            the HTML to display for the message box heading
	 * @param messageHtml
	 *            the HTML to display in the message box
	 * @param extendedHtml
	 *            the HTML to display in the extended box
	 * @param appearance
	 *            the message box window appearance
	 * @param contentAppearance
	 *            the message box content appearance
	 */
	public ErrorMessageDialog(String headingHtml, String messageHtml,
			String extendedHtml, WindowAppearance appearance,
			ErrorMessageDialogAppearance contentAppearance) {
		super(appearance);

		setWidth(650);
		//setHeight(350);
		getHeader().setIcon(contentAppearance.getWindowIcon());
		
		setResizable(false);
		
		this.contentAppearance = contentAppearance;

		setHeadingHtml(headingHtml);

		init();

		SafeHtmlBuilder sb = new SafeHtmlBuilder();
		contentAppearance.render(sb);

		appearance.getContentElem(getElement()).setInnerHTML(
				sb.toSafeHtml().asString());

		contentAppearance.getMessageElement(getElement()).setId(
				getId() + "-content");

		if (messageHtml != null) {
			contentAppearance.getMessageElement(getElement()).setInnerHTML(
					messageHtml);
		}

		if (extendedHtml != null) {
			contentAppearance.getExtendedElement(getElement()).setInnerHTML(
					extendedHtml);
		}
	}

	/**
	 * Sets the message.
	 * 
	 * @param message
	 *            the message
	 */
	public void setMessage(String message) {
		contentAppearance.getMessageElement(getElement()).setInnerHTML(message);
	}

	private void init() {
		setData("errorMessageDialog", true);
		setResizable(false);
		setConstrain(true);
		setMinimizable(false);
		setMaximizable(false);
		setClosable(false);
		setModal(true);
		setButtonAlign(BoxLayoutPack.CENTER);
		setPredefinedButtons(PredefinedButton.OK);
		setHideOnButtonClick(true);
	}

}