package org.gcube.portlets.user.reportgenerator.client.targets;


import org.gcube.portlets.user.reportgenerator.client.Presenter.Presenter;

import com.google.gwt.core.client.GWT;
import com.google.gwt.user.client.Window;
import com.google.gwt.user.client.ui.Composite;
import com.google.gwt.user.client.ui.Image;
import com.google.gwt.user.client.ui.VerticalPanel;
/**
 * <code> ImageArea </code> class is the Widget that goes into the workspace
 *
 * @author Massimiliano Assante, ISTI-CNR - massimiliano.assante@isti.cnr.it
 * @version October 2008 (0.2) 
 */
public class ImageArea extends Composite {

	private String templateName;
	private String imageName;
	
	private String currentUser;
	private String currentScope;
	
	VerticalPanel myPanel;
	Image myImage = new Image();

	/**
	 * Creates an image with a specified URL. The load event will be fired once
	 * the image at the given URL has been retrieved by the browser.
	 * 
	 * @param presenter .
	 * @param param the imageName of the image to be displayed or the URL to be displayed depending on the isURL param
	 * @param myTemplate the template name that owns the image, useful when template it's saved with another name 
	 * 					to eventually copy the images in the new template images folder
	 *  @param isURL true if passing a URL, false is passing image name 
	 *  @param w width
	 *  @param h height
	 */
	public ImageArea(Presenter presenter, String param, String myTemplate, boolean isURL, int w, int h) {
		myPanel = new VerticalPanel();
		currentUser = presenter.getCurrentUser();
		currentScope = presenter.getCurrentScope();
		//Window.alert("Image Area");
			
		if (isURL) {
			//need to get the name from the URL
			int lastSlash = param.lastIndexOf("/");
			if (lastSlash > -1) {
				imageName = param.substring(lastSlash+1, param.length());
			}
			else 
				imageName = param;
			this.templateName = "CURRENT_OPEN";
			//Window.alert(param);
			myImage.setUrl(param);	
			
		} else {
			imageName = param;
			this.templateName = myTemplate;

			String imgURL = getImageURL(imageName, "CURRENT_OPEN");

			
			myImage.setUrl(imgURL);	
		}
		myImage.setPixelSize(w, h);
		myPanel.setStyleName("d4sFrame");
		myPanel.add(myImage);
		initWidget(myPanel);
	}
	
	/**
	 * 
	 * @return .
	 */
	public String getUrl() {
		return myImage.getUrl();
	}
	
	/**
	 * return a URL which is lookable for on the web
	 * @param imageName .
	 * @param templateName .
	 * @return .
	 */
	public String getImageURL(String imageName, String templateName) {
	
		
		/**
		 * Images will be stored under webapps/usersArea...
		 * GWT.getModuleBaseURL() returns 	 * e.g. http://dlib28.isti.cnr.it/templatecreator/html/
		 * need to get just http://dlib28.isti.cnr.it/
		 */
		//remove "/html/" and get e.g. http://dlib28.isti.cnr.it/templatecreator
		String host = GWT.getModuleBaseURL().substring(0, GWT.getModuleBaseURL().length()-6);

		//loog for last slash
		int lastSlash = host.lastIndexOf("/");
		
		//get what i need : e.g. http://dlib28.isti.cnr.it/ or  host = "http://localhost:8080/";
		host = host.substring(0, lastSlash +1 );
		//host = "http://localhost:8080/";
		
		String imgURL = host + "usersArea/"	+ currentScope + "/templates/" 
							+ currentUser + "/" + "CURRENT_OPEN" + "/images/" + imageName;
		GWT.log(imgURL);
		return imgURL;
	}	
	/**
	 * 
	 * @return a string containing the owner template name
	 */
	public String getTemplateName() {
		return templateName;
	}

	/**
	 * 
	 * @param myTemplate the template owner
	 */
	public void setTemplateName(String myTemplate) {
		this.templateName = myTemplate;
	}

	/**
	 * 
	 * @return .
	 */
	public String getImageName() {
		return imageName;
	}

	/**
	 * 
	 * @param imageName .
	 */
	public void setImageName(String imageName) {
		this.imageName = imageName;
	}
	/**
	 * 
	 * @return the scope in which the application is running on
	 */
	public String getCurrentScope() {
		return currentScope;
	}

	/**
	 * 
	 * @return the user username who is using the application 
	 */
	public String getCurrentUser() {
		return currentUser;
	}
	

}