workspace/src/main/java/org/gcube/portlets/user/workspace/client/view/toolbars/GxtBreadcrumbPathPanel.java

package org.gcube.portlets.user.workspace.client.view.toolbars;

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

import org.gcube.portlets.user.workspace.client.AppController;
import org.gcube.portlets.user.workspace.client.event.PathElementSelectedEvent;
import org.gcube.portlets.user.workspace.client.model.FileModel;
import org.gcube.portlets.user.workspace.client.resources.Resources;

import com.extjs.gxt.ui.client.event.ButtonEvent;
import com.extjs.gxt.ui.client.event.Events;
import com.extjs.gxt.ui.client.event.Listener;
import com.extjs.gxt.ui.client.widget.HorizontalPanel;
import com.extjs.gxt.ui.client.widget.Text;
import com.extjs.gxt.ui.client.widget.WidgetComponent;
import com.extjs.gxt.ui.client.widget.button.Button;
import com.google.gwt.core.shared.GWT;
import com.google.gwt.user.client.ui.Image;

/**
 * @author Francesco Mangiacrapa francesco.mangiacrapa@isti.cnr.it
 *
 */
public class GxtBreadcrumbPathPanel {

	private static final String ROOT_NAME = "Workspace";

	private HorizontalPanel hpToolBar = new HorizontalPanel();
	private Text txtPath = new Text("PATH ");
	private LinkedHashMap<String, FileModel> hashFileModel = new LinkedHashMap<String, FileModel>();// Ordered-HashMap
	boolean rootAdded = false;
	protected WidgetComponent hardDiskIcon = new WidgetComponent(new Image (Resources.getImageHardDisk()));

	private FileModel lastParent;

	public GxtBreadcrumbPathPanel() {
		hpToolBar = new HorizontalPanel();
//		hpToolBar.setScrollMode(Scroll.AUTOX);
		hpToolBar.setId("myToolbarPath");
		hpToolBar.setHeight("25px");
		initToolbar();
	}
	
	
	
	/*
	 * private void createScrollers() { int h = hpToolBar.getHeight(); El
	 * scrollLeft =
	 * hpToolBar.el().insertFirst("<div class='x-tab-scroller-left'></div>");
	 * addStyleOnOver(scrollLeft.dom, "x-tab-scroller-left-over");
	 * scrollLeft.setHeight(h);
	 * 
	 * El scrollRight =
	 * hpToolBar.el().insertFirst("<div class='x-tab-scroller-right'></div>");
	 * addStyleOnOver(scrollRight.dom, "x-tab-scroller-right-over");
	 * scrollRight.setHeight(h);
	 * 
	 * }
	 * 
	 * public El fly(Element elem) { return El.fly(elem, "component"); }
	 * 
	 * private Map<String, String> overElements;
	 * 
	 * 
	 * protected void addStyleOnOver(Element elem, String style) { if
	 * (overElements == null) { overElements = new FastMap<String>(); }
	 * overElements.put(fly(elem).getId(), style); }
	 */
	  
	public HorizontalPanel getToolBarPathPanel() {
		return hpToolBar;
	}

	public void setPath(List<FileModel> parents) {

		initToolbarWithoutFakeRoot();

//		refreshSize();
		
		if (parents != null && parents.size() > 0) {

			ArrayList<Button> listButtons = new ArrayList<Button>();

			hashFileModel = new LinkedHashMap<String, FileModel>();

			// arrayFileModel = new ArrayList<FileModel>();

			for (FileModel parent : parents) {

				Button butt = new Button(parent.getName());
				butt.setId(parent.getIdentifier());
				butt.setStyleAttribute("top", "-4px");
				butt.setStyleName("button-hyperlink");
				// butt.setHeight(12);

				hashFileModel.put(parent.getIdentifier(), parent);

				// arrayFileModel.set(parent.getIdentifier(),parent);

				butt.addListener(Events.OnClick, new Listener<ButtonEvent>() {

					@Override
					public void handleEvent(ButtonEvent be) {

						// Window.alert("Name " + be.getButton().getText() +
						// " ID: "+ be.getButton().getId());

						FileModel target = hashFileModel.get(be.getButton().getId());

						AppController.getEventBus().fireEvent(new PathElementSelectedEvent(target));
					}

				});				
				listButtons.add(butt);				
			}

			int size = listButtons.size();
			for (int i = 0; i < size - 1; i++) {
				hpToolBar.add(listButtons.get(i));
				hpToolBar.add(new WidgetComponent(new Image(Resources.getImagePathSeparator())));
//				toolBar.getWidth();
			}
			
			lastParent = parents.get(parents.size()-1);

			hpToolBar.add(listButtons.get(size - 1)); // Add last element
			hpToolBar.layout(true);
			
//			int currentWidth = hpToolBar.el().getChild(0).getRegion().right;
//			int maxWidth = hpToolBar.getWidth();

//			GWT.log("toolBar maxWidth width is: "+maxWidth);
//			GWT.log("toolBar currentWidth is: "+currentWidth);
			
		}
	}
	
	public boolean breadcrumbIsEmpty(){
		
		if(hashFileModel.size() == 0)
			return true;
		
		return false;
		
	}
	
	public FileModel getLastParent(){
		return lastParent;
	}

	private void initToolbar() {
		hpToolBar.removeAll();
		hpToolBar.setStyleName("myToolbar");
		hpToolBar.setStyleAttribute("padding-top", "5px");
		txtPath.setStyleAttribute("padding-right", "10px");
		hpToolBar.add(new WidgetComponent(new Image(Resources.getImagePathSeparator())));
		hpToolBar.layout(true);

		Button butt = new Button(ROOT_NAME);
		butt.setId("");
		butt.setStyleAttribute("top", "-4px");
		butt.setStyleName("button-hyperlink");
		hpToolBar.add(butt);
	}
	
	private void initToolbarWithoutFakeRoot() {
		hpToolBar.removeAll();
		hpToolBar.setStyleName("myToolbar");
		hpToolBar.setStyleAttribute("padding-top", "5px");
		txtPath.setStyleAttribute("padding-right", "10px");
		hpToolBar.add(new WidgetComponent(new Image(Resources.getImagePathSeparator())));
		hpToolBar.layout(true);
	}

	/**
	 * 
	 */
	public void refreshSize() {
		GWT.log("Refreshed size");
	}



}