org.eclipse.php.composer.ui.wizard.DetectGroup.java Source code

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Here is the source code for org.eclipse.php.composer.ui.wizard.DetectGroup.java

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/*******************************************************************************
 * Copyright (c) 2012, 2016 PDT Extension Group 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:
 *     PDT Extension Group - initial API and implementation
 *******************************************************************************/
package org.eclipse.php.composer.ui.wizard;

import java.util.Observable;
import java.util.Observer;

import org.eclipse.core.resources.IResource;
import org.eclipse.core.resources.IWorkspace;
import org.eclipse.core.runtime.IPath;
import org.eclipse.dltk.core.DLTKCore;
import org.eclipse.dltk.core.environment.IEnvironment;
import org.eclipse.dltk.core.environment.IFileHandle;
import org.eclipse.dltk.internal.ui.wizards.NewWizardMessages;
import org.eclipse.dltk.ui.DLTKUIPlugin;
import org.eclipse.jface.dialogs.Dialog;
import org.eclipse.php.internal.ui.wizards.NameGroup;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.events.SelectionListener;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Link;

/**
 * Based on {@link org.eclipse.php.internal.ui.wizards.DetectGroup}
 * 
 * @author Robert Gruendler <r.gruendler@gmail.com>
 *
 */
@SuppressWarnings("restriction")
public class DetectGroup extends Observable implements Observer, SelectionListener {

    private final Link fHintText;
    private Label fIcon;
    private boolean fDetect;
    private LocationGroup fPHPLocationGroup;
    private NameGroup fGroupName;

    public DetectGroup(Composite parent, LocationGroup locationGroup, NameGroup nameGroup) {
        this.fPHPLocationGroup = locationGroup;
        this.fGroupName = nameGroup;

        Composite composite = new Composite(parent, SWT.None);
        composite.setLayoutData(new GridData(SWT.FILL, SWT.TOP, true, true));
        GridLayout layout = new GridLayout(2, false);
        layout.horizontalSpacing = 10;
        composite.setLayout(layout);

        fIcon = new Label(composite, SWT.LEFT);
        fIcon.setImage(Dialog.getImage(Dialog.DLG_IMG_MESSAGE_WARNING));
        GridData gridData = new GridData(SWT.LEFT, SWT.CENTER, false, false);
        fIcon.setLayoutData(gridData);
        fIcon.setVisible(false);

        fHintText = new Link(composite, SWT.WRAP);
        fHintText.setFont(composite.getFont());
        gridData = new GridData(GridData.FILL, SWT.FILL, true, true);
        gridData.widthHint = 500;
        fHintText.setLayoutData(gridData);
        fHintText.setText(NewWizardMessages.ScriptProjectWizardFirstPage_DetectGroup_message);
        fHintText.setVisible(false);
    }

    private boolean isValidProjectName(String name) {
        if (name.length() == 0) {
            return false;
        }
        final IWorkspace workspace = DLTKUIPlugin.getWorkspace();
        return workspace.validateName(name, IResource.PROJECT).isOK()
                && workspace.getRoot().findMember(name) == null;
    }

    public void update(Observable o, Object arg) {
        if (o instanceof LocationGroup) {
            boolean oldDetectState = fDetect;
            IPath location = fPHPLocationGroup.getLocation();
            if (fPHPLocationGroup.isInWorkspace()) {
                if (!isValidProjectName(fGroupName.getName())) {
                    fDetect = false;
                } else {
                    IEnvironment environment = fPHPLocationGroup.getEnvironment();
                    final IFileHandle directory = environment.getFile(location.append(fGroupName.getName()));
                    fDetect = directory.isDirectory();
                }
            } else {
                IEnvironment environment = fPHPLocationGroup.getEnvironment();
                if (location.toPortableString().length() > 0) {
                    final IFileHandle directory = environment.getFile(location);
                    fDetect = directory.isDirectory() && directory.getPath().toFile().exists();
                }
            }
            if (oldDetectState != fDetect) {
                setChanged();
                notifyObservers();
                if (fDetect) {
                    fHintText.setVisible(true);
                    fIcon.setVisible(true);
                } else {
                    fHintText.setVisible(false);
                    fIcon.setVisible(false);
                }

            }
        }
    }

    public boolean mustDetect() {
        return fDetect;
    }

    /*
     * (non-Javadoc)
     * 
     * @see org.eclipse.swt.events.SelectionListener#widgetSelected(org.eclipse
     * .swt.events.SelectionEvent)
     */
    public void widgetSelected(SelectionEvent e) {
        widgetDefaultSelected(e);
    }

    /*
     * (non-Javadoc)
     * 
     * @see org.eclipse.swt.events.SelectionListener#widgetDefaultSelected(org
     * .eclipse.swt.events.SelectionEvent)
     */
    public void widgetDefaultSelected(SelectionEvent e) {
        if (DLTKCore.DEBUG) {
            System.err.println("DetectGroup show compilancePreferencePage..."); //$NON-NLS-1$
        }

    }
}