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

134 lines
3.8 KiB
Java

package org.gcube.portlets.widgets.wsexplorer.client.view;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.gcube.portlets.widgets.wsexplorer.client.Util;
import org.gcube.portlets.widgets.wsexplorer.client.grid.ItemsTable;
import org.gcube.portlets.widgets.wsexplorer.client.rpc.WorkspaceExplorerService;
import org.gcube.portlets.widgets.wsexplorer.client.rpc.WorkspaceExplorerServiceAsync;
import org.gcube.portlets.widgets.wsexplorer.shared.FilterCriteria;
import org.gcube.portlets.widgets.wsexplorer.shared.Item;
import org.gcube.portlets.widgets.wsexplorer.shared.ItemType;
import com.google.gwt.core.client.GWT;
import com.google.gwt.user.client.rpc.AsyncCallback;
import com.google.gwt.user.client.ui.HTML;
import com.google.gwt.user.client.ui.HorizontalPanel;
import com.google.gwt.user.client.ui.ScrollPanel;
/**
* Entry point classes define <code>onModuleLoad()</code>.
*/
public class WorkspaceNavigator {
private final WorkspaceExplorerServiceAsync workspaceNavigatorService = GWT.create(WorkspaceExplorerService.class);
protected static final HorizontalPanel LOADING_PANEL = new HorizontalPanel();
static {
LOADING_PANEL.setSpacing(3);
// LOADING_PANEL.add(LOADING_IMAGE);
LOADING_PANEL.add(new HTML("Loading..."));
}
protected List<ItemType> selectableTypes = new ArrayList<ItemType>();
protected List<ItemType> showableTypes = new ArrayList<ItemType>();
protected List<String> allowedMimeTypes = new ArrayList<String>();
protected boolean showEmptyFolders = true;
protected Map<String, String> requiredProperties = new HashMap<String, String>();
/**
* Create a remote service proxy to talk to the server-side Greeting
* service.
*/
protected ScrollPanel explorerPanel;
public WorkspaceNavigator() {
// as default all items are showable and selectable
for (ItemType type : ItemType.values()) {
showableTypes.add(type);
selectableTypes.add(type);
}
explorerPanel = new ScrollPanel();
// sp.setWidth(width+"px");
// sp.setHeight(height+"px");
loadTree();
}
/**
* Set the panel in loading mode.
*/
protected void setLoading() {
explorerPanel.clear();
explorerPanel.add(LOADING_PANEL);
}
/**
* Load the Workspace Tree.
*/
public void loadTree() {
GWT.log("loading tree data");
setLoading();
// we make a copy of showable types
List<ItemType> showableTypesParam = new ArrayList<ItemType>(
showableTypes);
// we get sure that folders are displayed
for (ItemType folder : Util.FOLDERS) {
if (!showableTypesParam.contains(folder))
showableTypesParam.add(folder);
}
boolean purgeEmpyFolders = !showEmptyFolders;
FilterCriteria filterCriteria = new FilterCriteria(allowedMimeTypes,
requiredProperties);
GWT.log("loading workspace tree from server");
workspaceNavigatorService.getRoot(showableTypesParam, purgeEmpyFolders,
filterCriteria, new AsyncCallback<Item>() {
public void onFailure(Throwable caught) {
GWT.log("Error loading workspace tree from server",
caught);
// showErrorPanel(caught);
// DataLoadEvent.fireLoadDataFailed(WorkspaceLightTreePanel.this,
// caught);
}
public void onSuccess(Item root) {
GWT.log("workspace tree retrieved.");
// tree.setRootItem(root);
// we select the root
// tree.selectItem(root.getId());
// then we remove the loading icon
explorerPanel.clear();
ItemsTable itTables = new ItemsTable(false);
itTables.addItems(root.getChildren());
explorerPanel.add(itTables.getCellTable());
GWT.log("workspace tree loaded");
// DataLoadEvent.fireLoadDataSuccess(WorkspaceLightTreePanel.this);
}
});
}
/**
* @return the explorerPanel
*/
public ScrollPanel getExplorerPanel() {
return explorerPanel;
}
}