ProcessStatusPage.java

/* (c) 2014 - 2016 Open Source Geospatial Foundation - all rights reserved
 * This code is licensed under the GPL 2.0 license, available at the root
 * application directory.
 */
package org.geoserver.wps.web;

import java.util.List;

import org.apache.wicket.Component;
import org.apache.wicket.ajax.AjaxRequestTarget;
import org.apache.wicket.ajax.markup.html.AjaxLink;
import org.apache.wicket.markup.html.basic.Label;
import org.apache.wicket.markup.html.panel.Fragment;
import org.apache.wicket.model.IModel;
import org.geoserver.web.GeoServerApplication;
import org.geoserver.web.GeoServerSecuredPage;
import org.geoserver.web.wicket.GeoServerDataProvider.Property;
import org.geoserver.web.wicket.GeoServerDialog;
import org.geoserver.web.wicket.GeoServerTablePanel;
import org.geoserver.web.wicket.ParamResourceModel;
import org.geoserver.wps.executor.ExecutionStatus;
import org.geoserver.wps.executor.WPSExecutionManager;

/**
 * Shows the status of currently running, and recently completed, processes
 * 
 * @author Andrea Aime - GeoSolutions
 */
@SuppressWarnings("serial")
public class ProcessStatusPage extends GeoServerSecuredPage {

    private GeoServerTablePanel<ExecutionStatus> table;

    private AjaxLink<Void> dismissSelected;

    private GeoServerDialog dialog;

    public ProcessStatusPage() {
        ProcessStatusProvider provider = new ProcessStatusProvider();

        table = new GeoServerTablePanel<ExecutionStatus>("table", provider, true) {

            @Override
            protected Component getComponentForProperty(String id, IModel<ExecutionStatus> itemModel,
                    Property<ExecutionStatus> property) {
                // have the base class create a label for us
                return null;
            }

            @Override
            protected void onSelectionUpdate(AjaxRequestTarget target) {
                dismissSelected.setEnabled(table.getSelection().size() > 0);
                target.add(dismissSelected);
            }

        };
        table.setOutputMarkupId(true);
        table.setSelectable(true);
        add(table);

        // the confirm dialog
        add(dialog = new GeoServerDialog("dialog"));
        setHeaderPanel(headerPanel());
    }

    protected Component headerPanel() {
        Fragment header = new Fragment(HEADER_PANEL, "header", this);

        // the removal button
        header.add(dismissSelected = new ProcessDismissLink("dismissSelected"));
        dismissSelected.setOutputMarkupId(true);
        dismissSelected.setEnabled(false);

        return header;
    }

    protected final class ProcessDismissLink extends AjaxLink<Void> {
        
        protected ProcessDismissLink(String id) {
            super(id);
        }

        @Override
        public void onClick(AjaxRequestTarget target) {
            // see if the user selected anything
            final List<ExecutionStatus> selection = table.getSelection();
            if(selection.size() == 0)
                return;
            
            dialog.setTitle(new ParamResourceModel("confirmDismissal", this));

            // if there is something to cancel, let's warn the user about what
            // could go wrong, and if the user accepts, let's delete what's needed
            dialog.showOkCancel(target, new GeoServerDialog.DialogDelegate() {

                protected Component getContents(String id) {
                    // show a confirmation panel for all the objects we have to remove
                    return new Label(id, new ParamResourceModel("confirmDismissProcesses", ProcessStatusPage.this));
                }
                
                protected boolean onSubmit(AjaxRequestTarget target, Component contents) {
                    // issue deletion on the specified processes
                    WPSExecutionManager executor = GeoServerApplication.get().getBeanOfType(
                            WPSExecutionManager.class);
                    for (ExecutionStatus status : selection) {
                        try {
                            executor.cancel(status.getExecutionId());
                        } catch (Exception e) {
                            LOGGER.severe("Failed to cancel process: " + status.getExecutionId());
                            error("Failed to cancel process: " + status.getExecutionId()
                                    + " with error: " + e.getMessage());
                        }
                    }

                    return true;
                }
                
                @Override
                public void onClose(AjaxRequestTarget target) {
                    // if the selection has been cleared out it's sign a deletion
                    // occurred, so refresh the table
                    if (table.getSelection().size() == 0) {
                        setEnabled(false);
                    }
                    target.add(ProcessDismissLink.this);
                    target.add(table);
                }
                
            });
            
        }
    }

}