workspace-explorer/src/main/java/org/gcube/portlets/widgets/wsexplorer/client/WorkspaceExplorerController.java

/**
 * 
 */
package org.gcube.portlets.widgets.wsexplorer.client;

import java.util.List;

import org.gcube.portlets.widgets.wsexplorer.client.event.LoadFolderEvent;
import org.gcube.portlets.widgets.wsexplorer.client.event.LoadFolderEventHandler;
import org.gcube.portlets.widgets.wsexplorer.client.event.LoadMySpecialFolderEvent;
import org.gcube.portlets.widgets.wsexplorer.client.event.LoadMySpecialFolderEventHandler;
import org.gcube.portlets.widgets.wsexplorer.client.event.LoadRootEvent;
import org.gcube.portlets.widgets.wsexplorer.client.event.LoadRootEventHandler;
import org.gcube.portlets.widgets.wsexplorer.client.rpc.WorkspaceExplorerService;
import org.gcube.portlets.widgets.wsexplorer.client.rpc.WorkspaceExplorerServiceAsync;
import org.gcube.portlets.widgets.wsexplorer.client.view.Breadcrumbs;
import org.gcube.portlets.widgets.wsexplorer.client.view.Navigation;
import org.gcube.portlets.widgets.wsexplorer.client.view.WorkspaceExplorer;
import org.gcube.portlets.widgets.wsexplorer.shared.Item;
import org.gcube.portlets.widgets.wsexplorer.shared.ItemCategory;
import org.gcube.portlets.widgets.wsexplorer.shared.ItemType;

import com.github.gwtbootstrap.client.ui.constants.AlertType;
import com.google.gwt.core.client.GWT;
import com.google.gwt.event.shared.EventHandler;
import com.google.gwt.event.shared.HandlerManager;
import com.google.gwt.user.client.rpc.AsyncCallback;


/**
 * The Class WorkspaceExplorerController.
 *
 * @author Francesco Mangiacrapa francesco.mangiacrapa@isti.cnr.it
 * Jun 25, 2015
 */
public class WorkspaceExplorerController implements EventHandler {
	
	public final static HandlerManager eventBus = new HandlerManager(null);
	private WorkspaceExplorerPanel workspaceExplorerPanel;
	private WorkspaceExplorer wsExplorer;
	private Breadcrumbs breadcrumbs = new Breadcrumbs();
	private Navigation navigation = new Navigation();

	public static final WorkspaceExplorerServiceAsync workspaceNavigatorService = GWT.create(WorkspaceExplorerService.class);
	
	/**
	 * Instantiates a new workspace explorer controller.
	 */
	public WorkspaceExplorerController(){
		bindEvents();
		wsExplorer = new WorkspaceExplorer();
		workspaceExplorerPanel = new WorkspaceExplorerPanel(5, wsExplorer.getPanel(), breadcrumbs, navigation);
	}
	
//	public void loadRoot(){
//		wsExplorer.loadRoot();
//	}
	
	/**
	 * Bind events.
	 */
	private void bindEvents() {
		
		eventBus.addHandler(LoadFolderEvent.TYPE, new LoadFolderEventHandler() {
			
			@Override
			public void onLoadFolder(LoadFolderEvent loadFolderEvent) {
				
				if(loadFolderEvent.getTargetItem()!=null && loadFolderEvent.getTargetItem().isFolder()){
					wsExplorer.loadFolder(loadFolderEvent.getTargetItem());
					loadParentBreadcrumbByItemId(loadFolderEvent.getTargetItem().getId(), true);
				}
			}
		});
		
		eventBus.addHandler(LoadRootEvent.TYPE, new LoadRootEventHandler() {
			
			@Override
			public void onLoadRoot(LoadRootEvent loadRootEvent) {
				wsExplorer.loadRoot();
				
				workspaceNavigatorService.getItemByCategory(ItemCategory.HOME, new AsyncCallback<Item>() {

					@Override
					public void onFailure(Throwable caught) {
						GWT.log(caught.getMessage());
						breadcrumbs.clear();
						
					}

					@Override
					public void onSuccess(Item result) {
						result.setName(WorkspaceExplorerConstants.HOME_LABEL); //FORCE SET NAME LIKE "HOME_LABEL"
						breadcrumbs.init(result);
					}
				});
			}
		});
		
		eventBus.addHandler(LoadMySpecialFolderEvent.TYPE, new LoadMySpecialFolderEventHandler() {
			
			@Override
			public void onLoadMySpecialFolder(LoadMySpecialFolderEvent loadMySpecialFolderEvent) {
				wsExplorer.loadMySpecialFolder();

				workspaceNavigatorService.getItemByCategory(ItemCategory.VRE_FOLDER, new AsyncCallback<Item>() {

					@Override
					public void onFailure(Throwable caught) {
						GWT.log(caught.getMessage());
					}

					@Override
					public void onSuccess(Item result) {
						breadcrumbs.init(result);
					}
				});
			}
		});
	}

	/**
	 * Load parent breadcrumb by item id.
	 *
	 * @param itemIdentifier the item identifier
	 * @param includeItemAsParent the include item as parent
	 */
	protected void loadParentBreadcrumbByItemId(final String itemIdentifier, boolean includeItemAsParent){

		GWT.log("Reload Parent Breadcrumb: [Item id: "+itemIdentifier+"]");

		workspaceNavigatorService.getBreadcrumbsByItemIdentifier(itemIdentifier, includeItemAsParent, new AsyncCallback<List<Item>>() {

			@Override
			public void onFailure(Throwable caught) {
				GWT.log(caught.getMessage());
				wsExplorer.setAlert(caught.getMessage(), AlertType.ERROR);
			}

			@Override
			public void onSuccess(List<Item> result) {
				if(result!=null)
					breadcrumbs.setPath(result);
			}
		});

	}
	
	/**
	 * @return the breadcrumbs
	 */
	public Breadcrumbs getBreadcrumbs() {
		return breadcrumbs;
	}

	/**
	 * Gets the workspace explorer panel.
	 *
	 * @return the workspaceExplorerPanel
	 */
	public WorkspaceExplorerPanel getWorkspaceExplorerPanel() {
		return workspaceExplorerPanel;
	}

	/**
	 * @return the wsExplorer
	 */
	public WorkspaceExplorer getWsExplorer() {
		return wsExplorer;
	}

	/**
	 * @param selectableTypes
	 */
	public void setSelectableTypes(ItemType[] selectableTypes) {
		wsExplorer.setSelectableTypes(selectableTypes);
	}
	
	/**
	 * @return the selectableTypes
	 */
	public List<ItemType> getSelectableTypes() {
		return wsExplorer.getSelectableTypes();
	}

	/**
	 * @return
	 */
	public List<ItemType> getShowableTypes() {
		return wsExplorer.getShowableTypes();
	}

	/**
	 * @param showableTypes
	 */
	public void setShowableTypes(ItemType[] showableTypes) {
		wsExplorer.setShowableTypes(showableTypes);
	}
}