org.eclipse.oomph.setup.internal.installer.ExtensionPage.java Source code

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Here is the source code for org.eclipse.oomph.setup.internal.installer.ExtensionPage.java

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/*
 * Copyright (c) 2014, 2015 Eike Stepper (Berlin, Germany) 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:
 *    Eike Stepper - initial API and implementation
 *    Ericsson AB (Julian Enoch) - Bug 434525 - Allow prompted variables to be pre-populated
 */
package org.eclipse.oomph.setup.internal.installer;

import org.eclipse.oomph.internal.setup.SetupPrompter;
import org.eclipse.oomph.setup.SetupTask;
import org.eclipse.oomph.setup.internal.core.SetupTaskPerformer;
import org.eclipse.oomph.setup.ui.EnablementComposite;
import org.eclipse.oomph.setup.ui.EnablementComposite.InstallHandler;
import org.eclipse.oomph.setup.ui.EnablementComposite.InstallOperation;
import org.eclipse.oomph.setup.ui.EnablementDialog;
import org.eclipse.oomph.setup.ui.wizards.SetupWizardPage;
import org.eclipse.oomph.ui.ErrorDialog;

import org.eclipse.emf.common.util.EList;

import org.eclipse.jface.dialogs.IDialogConstants;
import org.eclipse.jface.wizard.IWizardContainer;
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;

/**
 * @author Eike Stepper
 */
public class ExtensionPage extends SetupWizardPage {
    private EnablementComposite enablementComposite;

    private InstallOperation installOperation;

    protected ExtensionPage() {
        super("ExtensionPage");
        setTitle("Extensions");
        setDescription(EnablementDialog.getDescription("the installer", "Finish"));
    }

    @Override
    protected Control createUI(Composite parent) {
        enablementComposite = new EnablementComposite(parent, SWT.BORDER);
        enablementComposite.setLayoutData(new GridData(GridData.FILL_BOTH));
        return enablementComposite;
    }

    @Override
    public WizardFinisher getWizardFinisher() {
        return new WizardFinisher() {
            public boolean performFinish() {
                install();

                // The installation is asynchronous; so don't close the dialog right now.
                return false;
            }
        };
    }

    @Override
    public void enterPage(boolean forward) {
        if (forward) {
            try {
                SetupTaskPerformer performer = createPerformer(SetupPrompter.OK, false);
                EList<SetupTask> triggeredSetupTasks = performer.getTriggeredSetupTasks();

                if (enablementComposite.setInput(triggeredSetupTasks) != null) {
                    setPageComplete(false);
                } else {
                    setPageComplete(true);
                    gotoNextPage();
                }
            } catch (Throwable t) {
                ErrorDialog.open(t);
            }
        } else {
            gotoPreviousPage();
        }
    }

    @Override
    public void leavePage(boolean forward) {
        if (!forward) {
            if (installOperation != null) {
                installOperation.cancel();
            }
        }
    }

    public void install() {
        setButtonState(IDialogConstants.FINISH_ID, false);
        setButtonState(IDialogConstants.CANCEL_ID, false);

        installOperation = enablementComposite.install(new InstallHandler() {
            public void installSucceeded() {
                installOperation = null;

                IWizardContainer container = getContainer();
                if (container instanceof InstallerDialog) {
                    InstallerDialog dialog = (InstallerDialog) container;
                    dialog.restart();
                }
            }

            public void installFailed(Throwable t) {
                ErrorDialog.open(t);
                installCanceled();
            }

            public void installCanceled() {
                setButtonState(IDialogConstants.FINISH_ID, true);
                setButtonState(IDialogConstants.CANCEL_ID, true);
                installOperation = null;
            }
        });
    }
}