com.aptana.deploy.capistrano.ui.wizard.InstallCapistranoGemPage.java Source code

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Here is the source code for com.aptana.deploy.capistrano.ui.wizard.InstallCapistranoGemPage.java

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/**
 * Aptana Studio
 * Copyright (c) 2005-2011 by Appcelerator, Inc. All Rights Reserved.
 * Licensed under the terms of the GNU Public License (GPL) v3 (with exceptions).
 * Please see the license.html included with this distribution for details.
 * Any modifications to this file must keep this entire header intact.
 */
package com.aptana.deploy.capistrano.ui.wizard;

import org.eclipse.core.resources.IProject;
import org.eclipse.core.runtime.IPath;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.core.runtime.jobs.Job;
import org.eclipse.jface.dialogs.Dialog;
import org.eclipse.jface.wizard.IWizardPage;
import org.eclipse.jface.wizard.WizardPage;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Label;
import org.eclipse.ui.PlatformUI;

import com.aptana.core.util.ExecutableUtil;
import com.aptana.terminal.widget.TerminalComposite;

public class InstallCapistranoGemPage extends WizardPage {

    private static final String NAME = "InstallCapistrano"; //$NON-NLS-1$
    private TerminalComposite terminalComposite;
    private IWizardPage fNextPage;
    protected Job checkGemInstalledJob;

    protected InstallCapistranoGemPage() {
        super(NAME, Messages.InstallCapistranoGemPage_Title, null);
    }

    public void createControl(Composite parent) {
        Composite composite = new Composite(parent, SWT.NULL);
        composite.setLayout(new GridLayout());
        composite.setLayoutData(new GridData(GridData.VERTICAL_ALIGN_FILL | GridData.HORIZONTAL_ALIGN_FILL));
        setControl(composite);

        initializeDialogUnits(parent);

        // Actual contents
        Label label = new Label(composite, SWT.WRAP);
        label.setText(Messages.InstallCapistranoGemPage_Description);
        label.setLayoutData(new GridData(500, SWT.DEFAULT));

        Button generateButton = new Button(composite, SWT.PUSH);
        generateButton.setText(Messages.InstallCapistranoGemPage_InstallGemLabel);
        generateButton.setLayoutData(new GridData(SWT.CENTER, SWT.CENTER, false, false));
        generateButton.addSelectionListener(new SelectionAdapter() {
            @Override
            public void widgetSelected(SelectionEvent e) {
                if (!terminalComposite.isEmpty()) {
                    terminalComposite.clear();
                }

                // Need to check to see if we should run under sudo to install gem...
                if (!ExecutableUtil.isGemInstallable()) {
                    // Does not have permission
                    terminalComposite.sendInput("sudo "); //$NON-NLS-1$
                }

                // install gem
                terminalComposite.sendInput("gem install capistrano\n"); //$NON-NLS-1$

                // Poll to check if capistrano is installed
                if (checkGemInstalledJob == null) {
                    checkGemInstalledJob = new Job("Checking if capistrano gem is installed") //$NON-NLS-1$
                    {
                        protected IStatus run(IProgressMonitor monitor) {
                            if (monitor != null && monitor.isCanceled()) {
                                return Status.CANCEL_STATUS;
                            }
                            if (isCapistranoGemInstalled()) {
                                PlatformUI.getWorkbench().getDisplay().asyncExec(new Runnable() {

                                    public void run() {
                                        getContainer().updateButtons(); // ok update the wizard
                                    }
                                });
                            } else {
                                schedule(1000); // check again in a second
                            }
                            return Status.OK_STATUS;
                        }
                    };
                    checkGemInstalledJob.setSystem(true);
                }
                checkGemInstalledJob.cancel();
                checkGemInstalledJob.schedule(1000);
            }
        });

        // Terminal
        terminalComposite = new TerminalComposite(composite, SWT.NONE);
        terminalComposite.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));

        terminalComposite.setWorkingDirectory(getProject().getLocation());
        terminalComposite.connect();

        Dialog.applyDialogFont(composite);
    }

    @Override
    public void dispose() {
        try {
            if (checkGemInstalledJob != null) {
                checkGemInstalledJob.cancel();
                checkGemInstalledJob = null;
            }
        } finally {
            super.dispose();
        }
    }

    @Override
    public IWizardPage getNextPage() {
        if (fNextPage == null) {
            fNextPage = new CapifyProjectPage();
            fNextPage.setWizard(getWizard());
        }
        return fNextPage;
    }

    @Override
    public boolean isPageComplete() {
        return isCapistranoGemInstalled();
    }

    static boolean isCapistranoGemInstalled() {
        // Determine if capistrano is installed
        IPath path = ExecutableUtil.find("capify", false, null); //$NON-NLS-1$
        if (path != null && path.toFile().exists()) {
            return true;
        }
        return false;
    }

    protected IProject getProject() {
        return ((CapistranoDeployWizard) getWizard()).getProject();
    }
}