org.eclipse.ui.examples.jobs.actions.CreateJobsAction.java Source code

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Here is the source code for org.eclipse.ui.examples.jobs.actions.CreateJobsAction.java

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/*******************************************************************************
 * Copyright (c) 2000, 2005 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.ui.examples.jobs.actions;

import org.eclipse.core.runtime.OperationCanceledException;
import org.eclipse.jface.action.IAction;
import org.eclipse.jface.dialogs.IDialogConstants;
import org.eclipse.jface.dialogs.IInputValidator;
import org.eclipse.jface.dialogs.InputDialog;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.window.Window;
import org.eclipse.ui.IWorkbenchWindow;
import org.eclipse.ui.IWorkbenchWindowActionDelegate;
import org.eclipse.ui.examples.jobs.TestJob;

/**
 * Test action that creates a number of fake jobs, and then waits until they complete.
 */
public class CreateJobsAction implements IWorkbenchWindowActionDelegate {
    static final long DELAY = 100;

    private IWorkbenchWindow window;

    private long askForDuration() {
        InputDialog dialog = new InputDialog(window.getShell(), "How long?", //$NON-NLS-1$
                "Enter the number of milliseconds per job", "1000", new IInputValidator() { //$NON-NLS-1$ //$NON-NLS-2$
                    public String isValid(String newText) {
                        try {
                            Long.parseLong(newText);
                        } catch (NumberFormatException e) {
                            return "Not a number"; //$NON-NLS-1$
                        }
                        return null;
                    }
                });
        if (dialog.open() == Window.CANCEL)
            throw new OperationCanceledException();
        return Long.parseLong(dialog.getValue());
    }

    private boolean askForExclusive() {
        MessageDialog dialog = new MessageDialog(window.getShell(), "Likes to be left alone?", //$NON-NLS-1$
                null, "Press yes if the jobs should be run one at a time, and no otherwise", //$NON-NLS-1$
                MessageDialog.QUESTION, new String[] { IDialogConstants.YES_LABEL, IDialogConstants.NO_LABEL }, 1 // no is the default
        );
        return dialog.open() == 0;
    }

    private boolean askForFailure() {
        MessageDialog dialog = new MessageDialog(window.getShell(), "Born to fail?", //$NON-NLS-1$
                null, "Should the jobs return an error status?", //$NON-NLS-1$
                MessageDialog.QUESTION, new String[] { IDialogConstants.YES_LABEL, IDialogConstants.NO_LABEL }, 1 // no is the default
        );
        return dialog.open() == 0;
    }

    private int askForJobCount() {
        InputDialog dialog = new InputDialog(window.getShell(), "How much work?", "Enter the number of jobs to run", //$NON-NLS-1$//$NON-NLS-2$
                "100", new IInputValidator() { //$NON-NLS-1$
                    public String isValid(String newText) {
                        try {
                            Integer.parseInt(newText);
                        } catch (NumberFormatException e) {
                            return "Not a number"; //$NON-NLS-1$
                        }
                        return null;
                    }
                });
        if (dialog.open() == Window.CANCEL)
            throw new OperationCanceledException();
        return Integer.parseInt(dialog.getValue());
    }

    public void dispose() {
        //do nothing
    }

    public void init(IWorkbenchWindow window) {
        this.window = window;
    }

    public void run(IAction action) {
        int jobCount = askForJobCount();
        long duration = askForDuration();
        boolean exclusive = askForExclusive();
        boolean failure = askForFailure();
        for (int i = 0; i < jobCount; i++) {
            new TestJob(duration, exclusive, failure, false, false, 0).schedule(DELAY);
        }
    }

    public void selectionChanged(IAction action, ISelection selection) {
        //do nothing
    }
}