BackendTasksDialog.java example

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OneSwarm-master
package edu.washington.cs.oneswarm.ui.gwt.client.newui;

import com.google.gwt.user.client.rpc.AsyncCallback;
import com.google.gwt.user.client.ui.Button;
import com.google.gwt.user.client.ui.ClickListener;
import com.google.gwt.user.client.ui.HorizontalPanel;
import com.google.gwt.user.client.ui.Label;
import com.google.gwt.user.client.ui.VerticalPanel;
import com.google.gwt.user.client.ui.Widget;

import edu.washington.cs.oneswarm.ui.gwt.client.OneSwarmDialogBox;
import edu.washington.cs.oneswarm.ui.gwt.client.OneSwarmRPCClient;
import edu.washington.cs.oneswarm.ui.gwt.rpc.BackendTask;

public class BackendTasksDialog extends OneSwarmDialogBox {

    public static final int WIDTH = 500;

    public BackendTasksDialog(BackendTask[] inTasks) {
        super();

        setText("Tasks");

        VerticalPanel mainPanel = new VerticalPanel();

        Label selectLabel = new Label("Cancel running tasks.");
        selectLabel.addStyleName(CSS_DIALOG_HEADER);
        selectLabel.setWidth(WIDTH + "px");
        mainPanel.add(selectLabel);
        mainPanel.setCellVerticalAlignment(selectLabel, VerticalPanel.ALIGN_TOP);
        mainPanel.setWidth(WIDTH + "px");

        for (BackendTask t : inTasks) {
            mainPanel.add(taskPanel(t));
        }

        Button hideButton = new Button("Hide");
        HorizontalPanel hideButtonHP = new HorizontalPanel();
        hideButtonHP.add(hideButton);
        mainPanel.add(hideButtonHP);
        mainPanel.setCellHorizontalAlignment(hideButtonHP, HorizontalPanel.ALIGN_RIGHT);
        hideButton.addClickListener(new ClickListener() {
            public void onClick(Widget sender) {
                hide();
            }
        });

        mainPanel.setWidth("100%");

        this.setWidget(mainPanel);
    }

    private VerticalPanel taskPanel(final BackendTask inTask) {
        final VerticalPanel outPanel = new VerticalPanel();

        outPanel.setWidth("100%");

        outPanel.add(new Label(inTask.getShortname()));
        outPanel.add(new Label(inTask.getSummary()));

        Button cancelButton = new Button("Cancel");
        cancelButton.addClickListener(new ClickListener() {
            public void onClick(Widget sender) {
                OneSwarmRPCClient.getService().cancelBackendTask(OneSwarmRPCClient.getSessionID(),
                        inTask.getTaskID(), new AsyncCallback<Void>() {
                            public void onFailure(Throwable caught) {
                                caught.printStackTrace();
                            }

                            public void onSuccess(Void result) {
                                System.out.println("cancelled");
                                outPanel.removeFromParent();
                            }
                        });
            }
        });

        outPanel.add(cancelButton);
        outPanel.setSpacing(3);
        outPanel.setCellHorizontalAlignment(cancelButton, HorizontalPanel.ALIGN_LEFT);

        return outPanel;
    }
}