393 lines
11 KiB
Java
393 lines
11 KiB
Java
package org.gcube.portlets.user.workspaceexplorerapp.client.view;
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.List;
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import java.util.Set;
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import org.gcube.portlets.user.workspaceexplorerapp.client.Util;
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import org.gcube.portlets.user.workspaceexplorerapp.client.WorkspaceExplorerApp;
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import org.gcube.portlets.user.workspaceexplorerapp.client.WorkspaceExplorerAppConstants;
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import org.gcube.portlets.user.workspaceexplorerapp.client.event.LoadFolderEvent;
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import org.gcube.portlets.user.workspaceexplorerapp.client.event.RootLoadedEvent;
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import org.gcube.portlets.user.workspaceexplorerapp.client.grid.DisplayField;
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import org.gcube.portlets.user.workspaceexplorerapp.client.grid.ItemsTable;
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import org.gcube.portlets.user.workspaceexplorerapp.client.resources.newres.WorkspaceExplorerAppResources;
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import org.gcube.portlets.user.workspaceexplorerapp.shared.FilterCriteria;
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import org.gcube.portlets.user.workspaceexplorerapp.shared.Item;
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import org.gcube.portlets.user.workspaceexplorerapp.shared.ItemType;
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import com.github.gwtbootstrap.client.ui.Alert;
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import com.github.gwtbootstrap.client.ui.Button;
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import com.github.gwtbootstrap.client.ui.constants.AlertType;
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import com.github.gwtbootstrap.client.ui.constants.ButtonType;
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import com.google.gwt.core.client.GWT;
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import com.google.gwt.dom.client.Style.Unit;
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import com.google.gwt.event.dom.client.ClickEvent;
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import com.google.gwt.event.dom.client.ClickHandler;
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import com.google.gwt.event.shared.HandlerManager;
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import com.google.gwt.user.client.rpc.AsyncCallback;
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import com.google.gwt.user.client.ui.HTML;
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import com.google.gwt.user.client.ui.HorizontalPanel;
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import com.google.gwt.user.client.ui.Image;
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import com.google.gwt.user.client.ui.ScrollPanel;
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/**
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* The Class WorkspaceExplorer.
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*
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* @author Francesco Mangiacrapa francesco.mangiacrapa@isti.cnr.it
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* Aug 4, 2015
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*/
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public class WorkspaceExplorer implements ShowableTypes, SelectableTypes{
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protected static final HorizontalPanel LOADING_PANEL = new HorizontalPanel();
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protected static final Image LOADING_IMAGE = WorkspaceExplorerAppResources.getIconLoading().createImage();
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static {
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LOADING_PANEL.setWidth("95%");
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LOADING_PANEL.getElement().getStyle().setPadding(5.0, Unit.PX);
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// LOADING_PANEL.setSpacing(3);
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LOADING_PANEL.add(LOADING_IMAGE);
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HTML loading = new HTML("Loading...");
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loading.getElement().getStyle().setPaddingLeft(5.0, Unit.PX);
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LOADING_PANEL.add(loading);
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}
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protected Alert alert = new Alert();
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protected List<ItemType> selectableTypes = new ArrayList<ItemType>();
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protected List<ItemType> showableTypes = new ArrayList<ItemType>();
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protected FilterCriteria filterCriteria = null;
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protected boolean showEmptyFolders = true;
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protected ScrollPanel explorerPanel;
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private ItemsTable itTables;
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private DisplayField[] displayFields;
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private HandlerManager eventBus;
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private Item baseFolder;
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/**
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* Instantiates a new workspace explorer.
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*
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* @param eventBus the event bus
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* @param showableTypes the showable types
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* @param selectableTypes the selectable types
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* @param fields the fields
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*/
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public WorkspaceExplorer(HandlerManager eventBus, ItemType[] showableTypes, ItemType[] selectableTypes, DisplayField...fields) {
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this.eventBus = eventBus;
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setShowableTypes(showableTypes);
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setSelectableTypes(selectableTypes);
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itTables = new ItemsTable(eventBus, true, fields);
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explorerPanel = new ScrollPanel();
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explorerPanel.getElement().setId("explorer_panel_we");
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explorerPanel.getElement().setPropertyString("id", "explorer_panel_we");
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}
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/**
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* Instantiates a new workspace explorer.
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*
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* @param eventBus the event bus
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* @param filterCriteria the filter criteria
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* @param showableTypes the showable types
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* @param selectableTypes the selectable types
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* @param fields the fields
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*/
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public WorkspaceExplorer(HandlerManager eventBus, FilterCriteria filterCriteria, ItemType[] showableTypes, ItemType[] selectableTypes, DisplayField...fields) {
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this(eventBus, showableTypes, selectableTypes, fields);
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this.filterCriteria = filterCriteria;
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}
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/**
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* Sets the alert.
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*
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* @param html the html
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* @param type the type
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* @param goToFolder the go to folder
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*/
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public void setAlert(String html, AlertType type, final Item goToFolder){
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explorerPanel.clear();
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alert.setHTML(html);
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alert.setType(type);
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if(goToFolder!=null) {
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Button buttGoToHome = new Button("Go to Home");
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buttGoToHome.setType(ButtonType.LINK);
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buttGoToHome.addClickHandler(new ClickHandler() {
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@Override
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public void onClick(ClickEvent event) {
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eventBus.fireEvent(new LoadFolderEvent(goToFolder));
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}
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});
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alert.add(buttGoToHome);
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}
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alert.setClose(false);
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explorerPanel.add(alert);
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}
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/**
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* Set the panel in loading mode.
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*/
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protected void setLoading() {
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explorerPanel.clear();
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explorerPanel.add(LOADING_PANEL);
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}
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/**
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* Load the Workspace Tree.
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*/
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public void loadRoot() {
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GWT.log("loading tree data");
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setLoading();
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// we make a copy of showable types
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List<ItemType> showableTypesParam = new ArrayList<ItemType>(showableTypes);
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// we get sure that folders are displayed
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for (ItemType folder : Util.FOLDERS) {
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if (!showableTypesParam.contains(folder))
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showableTypesParam.add(folder);
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}
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boolean purgeEmpyFolders = !showEmptyFolders;
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GWT.log("loading workspace tree from server");
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WorkspaceExplorerAppConstants.workspaceNavigatorService.getRoot(showableTypesParam, purgeEmpyFolders, filterCriteria, new AsyncCallback<Item>() {
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public void onFailure(Throwable caught) {
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//Window.alert(caught.getMessage());
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GWT.log("Error loading workspace tree from server",caught);
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setAlert(caught.getMessage(), AlertType.ERROR, null);
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}
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public void onSuccess(Item item) {
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eventBus.fireEvent(new RootLoadedEvent(item));
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updateExplorer(item.getChildren());
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}
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});
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}
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/**
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* Load folder.
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*
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* @param item the item
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* @throws Exception the exception
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*/
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public void loadFolder(final Item item) throws Exception {
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GWT.log("loading folder data");
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setLoading();
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if(!item.isFolder())
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throw new Exception("Item is not a folder");
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if(item.getId()==null || item.getId().isEmpty())
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throw new Exception("Item id is null or empty");
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// we make a copy of showable types
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List<ItemType> showableTypesParam = new ArrayList<ItemType>(showableTypes);
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// we get sure that folders are displayed
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for (ItemType folder : Util.FOLDERS) {
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if (!showableTypesParam.contains(folder))
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showableTypesParam.add(folder);
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}
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boolean purgeEmpyFolders = !showEmptyFolders;
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// FilterCriteria filterCriteria = new FilterCriteria(allowedMimeTypes,requiredProperties, allowedFileExtensions);
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GWT.log("loading workspace folder by item id from server: "+item.getId());
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WorkspaceExplorerAppConstants.workspaceNavigatorService.getFolder(item, showableTypesParam, purgeEmpyFolders, filterCriteria, new AsyncCallback<Item>() {
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@Override
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public void onFailure(Throwable caught) {
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//Window.alert(caught.getMessage());
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GWT.log("Error loading workspace folder from server",caught);
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setAlert(caught.getMessage(), AlertType.ERROR, null);
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}
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@Override
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public void onSuccess(Item result) {
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if(item.getName()==null || item.getName().isEmpty())
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item.setName(result.getName());
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updateExplorer(result.getChildren());
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}
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});
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}
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/**
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* Load the Workspace Tree.
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*/
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public void loadMySpecialFolder() {
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GWT.log("loading folder data");
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setLoading();
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// we make a copy of showable types
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List<ItemType> showableTypesParam = new ArrayList<ItemType>(showableTypes);
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// we get sure that folders are displayed
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for (ItemType folder : Util.FOLDERS) {
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if (!showableTypesParam.contains(folder))
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showableTypesParam.add(folder);
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}
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boolean purgeEmpyFolders = !showEmptyFolders;
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// FilterCriteria filterCriteria = new FilterCriteria(allowedMimeTypes,requiredProperties, allowedFileExtensions);
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GWT.log("loading workspace tree from server");
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WorkspaceExplorerAppConstants.workspaceNavigatorService.getMySpecialFolder(showableTypesParam, purgeEmpyFolders, filterCriteria, new AsyncCallback<Item>() {
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@Override
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public void onFailure(Throwable caught) {
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//Window.alert(caught.getMessage());
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GWT.log("Error loading workspace folder from server",caught);
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setAlert(caught.getMessage(), AlertType.ERROR, null);
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}
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@Override
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public void onSuccess(Item items) {
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updateExplorer(items.getChildren());
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}
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});
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}
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/**
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* Update explorer.
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*
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* @param items the items
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*/
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public void updateExplorer(ArrayList<Item> items){
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GWT.log("workspace explorer updating..");
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explorerPanel.clear();
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// itTables = new ItemsTable(true, displayFields);
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itTables.updateItems(items, true);
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explorerPanel.add(itTables.getCellTable());
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GWT.log("workspace explorer updated");
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WorkspaceExplorerApp.updateSize();
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}
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/**
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* Adds the item to explorer.
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*
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* @param item the item
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*/
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public void addItemToExplorer(Item item){
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GWT.log("workspace explorer add item.."+item);
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// itTables = new ItemsTable(true, displayFields);
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// explorerPanel.clear();
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itTables.addItems(Arrays.asList(item));
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// explorerPanel.add(itTables.getCellTable());
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GWT.log("added item: "+item.getName() +", to Explorer");
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}
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/**
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* Sets the base folder.
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*
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* @param item the new base folder
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*/
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public void setBaseFolder(Item baseFolder) {
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this.baseFolder = baseFolder;
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}
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/**
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* Gets the panel.
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*
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* @return the explorerPanel
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*/
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public ScrollPanel getPanel() {
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return explorerPanel;
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}
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/**
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* Gets the display fields.
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*
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* @return the displayFields
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*/
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public DisplayField[] getDisplayFields() {
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return displayFields;
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}
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/**
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* Sets the display fields.
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*
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* @param displayFields the displayFields to set
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*/
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public void setDisplayFields(DisplayField[] displayFields) {
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this.displayFields = displayFields;
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itTables.setDisplayFields(displayFields);
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}
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/**
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* Gets the it tables.
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*
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* @return the itTables
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*/
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public ItemsTable getItTables() {
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return itTables;
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}
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/**
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* Gets the items selected.
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*
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* @return the items selected
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*/
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public Set<Item> getItemsSelected(){
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return itTables.getSelectedItems();
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}
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/**
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* Gets the selectable types.
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*
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* @return the selectableTypes
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*/
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@Override
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public List<ItemType> getSelectableTypes() {
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return selectableTypes;
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}
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/**
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* Sets the selectable types.
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*
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* @param selectableTypes the selectableTypes to set
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*/
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@Override
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public void setSelectableTypes(ItemType ... selectableTypes) {
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this.selectableTypes.clear();
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if (selectableTypes!=null) for (ItemType type:selectableTypes) this.selectableTypes.add(type);
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}
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/**
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* Gets the showable types.
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*
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* @return the showableTypes
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*/
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@Override
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public List<ItemType> getShowableTypes() {
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return showableTypes;
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}
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/**
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* Sets the showable types.
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*
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* @param showableTypes the showableTypes to set
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*/
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@Override
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public void setShowableTypes(ItemType ... showableTypes) {
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this.showableTypes.clear();
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if (showableTypes!=null) for (ItemType type:showableTypes) this.showableTypes.add(type);
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}
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}
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