workspace-explorer/src/main/java/org/gcube/portlets/widgets/wsexplorer/client/view/gcubeitem/DialogShowGcubeItem.java

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

import java.util.Map;

import org.gcube.portlets.widgets.wsexplorer.client.WorkspaceExplorerConstants;
import org.gcube.portlets.widgets.wsexplorer.client.resources.WorkspaceExplorerResources;
import org.gcube.portlets.widgets.wsexplorer.shared.Item;

import com.google.gwt.dom.client.Style.Unit;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.resources.client.ImageResource;
import com.google.gwt.user.client.rpc.AsyncCallback;
import com.google.gwt.user.client.ui.Button;
import com.google.gwt.user.client.ui.DialogBox;
import com.google.gwt.user.client.ui.DockPanel;
import com.google.gwt.user.client.ui.FlexTable;
import com.google.gwt.user.client.ui.HTML;
import com.google.gwt.user.client.ui.HasHorizontalAlignment;
import com.google.gwt.user.client.ui.HorizontalPanel;
import com.google.gwt.user.client.ui.Image;
import com.google.gwt.user.client.ui.VerticalPanel;
import com.google.gwt.user.client.ui.Widget;


/**
 * The Class DialogShowGcubeItem.
 *
 * @author Francesco Mangiacrapa francesco.mangiacrapa@isti.cnr.it
 * May 17, 2016
 *
 * Shows a Dialog with gcube items related to WorkspaceItemId.
 */
public class DialogShowGcubeItem extends DialogBox implements ClickHandler {

	private DockPanel dock = new DockPanel();
	private Button yesButton;
	private VerticalPanel vpContainer;
	private ImageResource loading = WorkspaceExplorerResources.ICONS.loading();
	private HorizontalPanel hpButtons = new HorizontalPanel();


	/**
	 * Instantiates a new dialog show gcube items related to WorkspaceItemId.
	 *
	 * @param caption the caption
	 * @param text the text
	 * @param item the worksapce item id
	 */
	public DialogShowGcubeItem(String caption, String text, Item item) {
		getElement().setClassName("gwt-DialogBoxNew");
		dock.setSpacing(4);
		dock.setWidth("100%");
		setText(caption);

		yesButton = new Button("Ok");
		yesButton.addClickHandler(new ClickHandler() {

			@Override
			public void onClick(ClickEvent event) {
				hide();
			}
		});

		vpContainer = new VerticalPanel();
//		vpContainer.getElement().getStyle().setMargin(5.0, Unit.PX);
		vpContainer.add(new HTML(text));
		hpButtons = new HorizontalPanel();
		hpButtons.setHorizontalAlignment(HasHorizontalAlignment.ALIGN_CENTER);
		hpButtons.setSpacing(3);
//		yesButton.getElement().getStyle().setMarginRight(20.0, Unit.PX);
		hpButtons.add(yesButton);

		dock.add(hpButtons, DockPanel.SOUTH);
		dock.setCellHorizontalAlignment(hpButtons, DockPanel.ALIGN_CENTER);

		dock.add(vpContainer, DockPanel.CENTER);
		setWidget(dock);


		if(item.getGcubeProperties()!=null){
			FlexTable table = buildGcubeItemView(item.getGcubeProperties());
			addToCenterPanel(table);

		}else{
			addLoader("Re-loading Gcube Properties Info...");
			WorkspaceExplorerConstants.workspaceNavigatorService.getGcubePropertiesForWorspaceId(item.getId(), new AsyncCallback<Map<String,String>>() {

				@Override
				public void onSuccess(Map<String, String> result) {
					FlexTable table = buildGcubeItemView(result);
					removeLoader();
					addToCenterPanel(table);
				}

				@Override
				public void onFailure(Throwable caught) {
					removeLoader();
				}
			});
		}
	}

	/**
	 * Builds the gcube item view.
	 *
	 * @param map the map
	 * @return the flex table
	 */
	private FlexTable buildGcubeItemView(Map<String, String> map){

		FlexTable table = new FlexTable();
		table.setWidth("100%");


		if(map.size()==0){
			table.setHTML(0, 0, "No properties");
			return table;
		}

		table.addStyleName("gcube-item-table");
		table.setHTML(0, 0, "N.");
		table.setHTML(0, 1, "Key");
		table.setHTML(0, 2, "Value");
		table.getRowFormatter().getElement(0).addClassName("gcube-item-table-header");

		int i = 0;
		for (String key : map.keySet()) {
			String value = map.get(key);
			int index = i+1;
			table.setHTML(index, 0, index+"-");
			table.setHTML(index, 1, key);
			table.setHTML(index, 2, value);

		}
		return table;
	}

	/*
	 * (non-Javadoc)
	 *
	 * @see
	 * com.google.gwt.event.dom.client.ClickHandler#onClick(com.google.gwt.event
	 * .dom.client.ClickEvent)
	 */
	@Override
	public void onClick(ClickEvent event) {
//		hide();
	}


	/**
	 * Adds the loader.
	 *
	 * @param message the message
	 */
	private void addLoader(String message){
		try{
			dock.remove(hpButtons);
		}catch(Exception e){}
		vpContainer.clear();
		HorizontalPanel hpMask = new HorizontalPanel();
		hpMask.add(new Image(loading));
		HTML html = new HTML(message);
		html.getElement().getStyle().setMarginLeft(5, Unit.PX);
		hpMask.add(html);
		vpContainer.add(hpMask);
	}

	/**
	 * Removes the loader.
	 */
	private void removeLoader(){
		try{
			dock.add(hpButtons);
		}catch(Exception e){}
		vpContainer.clear();
	}

	/**
	 * Adds the to center panel.
	 *
	 * @param w the w
	 */
	public void addToCenterPanel(Widget w) {
		vpContainer.add(w);
	}

	/**
	 * Gets the dock.
	 *
	 * @return the dock
	 */
	public DockPanel getDock() {
		return dock;
	}

	/**
	 * Gets the yes button.
	 *
	 * @return the yes button
	 */
	public Button getYesButton() {
		return yesButton;
	}
}