org.eclipse.emf.ecp.view.model.presentation.ViewModelWizardNewFileCreationPage.java Source code

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Here is the source code for org.eclipse.emf.ecp.view.model.presentation.ViewModelWizardNewFileCreationPage.java

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/*******************************************************************************
 * Copyright (c) 2011-2015 EclipseSource Muenchen GmbH 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:
 * Alexandra Buzila - initial API and implementation
 ******************************************************************************/
package org.eclipse.emf.ecp.view.model.presentation;

import java.util.Arrays;
import java.util.Collections;
import java.util.List;

import org.eclipse.core.resources.IContainer;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IFolder;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.Path;
import org.eclipse.emf.ecore.EClass;
import org.eclipse.jface.dialogs.IMessageProvider;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.ui.dialogs.WizardNewFileCreationPage;

/**
 * @author Alexandra Buzila
 *
 */
/**
 * This is the first page of the wizard. <!-- begin-user-doc --> <!--
 * end-user-doc -->
 *
 * @generated
 */
public class ViewModelWizardNewFileCreationPage extends WizardNewFileCreationPage {

    /**
     * The supported extensions for created files. <!-- begin-user-doc --> <!--
     * end-user-doc -->
     *
     * @generated
     */
    public static final List<String> FILE_EXTENSIONS = Collections.unmodifiableList(
            Arrays.asList(ViewEditorPlugin.INSTANCE.getString("_UI_ViewEditorFilenameExtensions").split( //$NON-NLS-1$
                    "\\s*,\\s*"))); //$NON-NLS-1$

    /**
     * A formatted list of supported file extensions, suitable for display. <!--
     * begin-user-doc --> <!-- end-user-doc -->
     *
     * @generated
     */
    public static final String FORMATTED_FILE_EXTENSIONS = ViewEditorPlugin.INSTANCE
            .getString("_UI_ViewEditorFilenameExtensions").replaceAll( //$NON-NLS-1$
                    "\\s*,\\s*", ", "); //$NON-NLS-1$ //$NON-NLS-2$

    private EClass eClass;
    private final IStructuredSelection selection;

    /**
     * @return the eClass
     */
    public EClass getEClass() {
        return eClass;
    }

    /**
     * @param eClass the eClass to set
     */
    public void setEClass(EClass eClass) {
        this.eClass = eClass;
    }

    /**
     * Pass in the selection. <!-- begin-user-doc --> <!-- end-user-doc -->
     *
     * @generated
     */
    public ViewModelWizardNewFileCreationPage(String pageId, IStructuredSelection selection) {
        super(pageId, selection);
        this.selection = selection;
    }

    /**
     * {@inheritDoc}
     *
     * @see org.eclipse.ui.dialogs.WizardNewFileCreationPage#setVisible(boolean)
     */
    @Override
    public void setVisible(boolean visible) {
        super.setVisible(visible);
        if (visible) {
            // Try and get the resource selection to determine a current directory
            // for the file dialog.
            if (selection != null && !selection.isEmpty()) {
                // Get the resource...
                final Object selectedElement = selection.iterator().next();
                if (selectedElement instanceof IResource) {
                    // Get the resource parent, if its a file.
                    IResource selectedResource = (IResource) selectedElement;
                    if (selectedResource.getType() == IResource.FILE) {
                        selectedResource = selectedResource.getParent();
                    }

                    // This gives us a directory...
                    if (selectedResource instanceof IFolder || selectedResource instanceof IProject) {
                        // Set this for the container.
                        setContainerFullPath(selectedResource.getFullPath());
                    }
                    // Make up a unique new name here.
                    final String defaultModelBaseFilename = eClass.getName();
                    final String defaultModelFilenameExtension = FILE_EXTENSIONS.get(0);
                    String modelFilename = defaultModelBaseFilename + "." //$NON-NLS-1$
                            + defaultModelFilenameExtension;
                    for (int i = 1; ((IContainer) selectedResource).findMember(modelFilename) != null; ++i) {
                        modelFilename = defaultModelBaseFilename + i + "." //$NON-NLS-1$
                                + defaultModelFilenameExtension;
                    }
                    setFileName(modelFilename);
                    setPageComplete(true);
                }
            }
        } else {
            setPageComplete(false);
        }

    }

    /**
     * {@inheritDoc}
     *
     * @see org.eclipse.ui.dialogs.WizardNewFileCreationPage#createControl(org.eclipse.swt.widgets.Composite)
     */
    @Override
    public void createControl(Composite parent) {
        super.createControl(parent);
    }

    /**
     * The framework calls this to see if the file is correct. <!--
     * begin-user-doc --> <!-- end-user-doc -->
     *
     * @generated
     */
    @Override
    protected boolean validatePage() {
        if (super.validatePage()) {
            // validate extension
            final String extension = new Path(getFileName()).getFileExtension();
            if (extension == null || !FILE_EXTENSIONS.contains(extension)) {
                final String key = FILE_EXTENSIONS.size() > 1 ? "_WARN_FilenameExtensions" //$NON-NLS-1$
                        : "_WARN_FilenameExtension"; //$NON-NLS-1$
                setErrorMessage(
                        ViewEditorPlugin.INSTANCE.getString(key, new Object[] { FORMATTED_FILE_EXTENSIONS }));
                return false;
            }
            // validate selected project
            checkProjectNature();

            return true;
        }
        return false;
    }

    private void checkProjectNature() {
        final IProject project = getModelFile().getProject();
        try {
            if (!project.hasNature("org.eclipse.pde.PluginNature")) { //$NON-NLS-1$
                setMessage(ViewEditorPlugin.INSTANCE.getString("_WARN_PluginProject"), IMessageProvider.WARNING); //$NON-NLS-1$
            }
        } catch (final CoreException ex) {
            // do nothing
        }
    }

    /**
     * <!-- begin-user-doc --> <!-- end-user-doc -->
     *
     * @generated
     */
    public IFile getModelFile() {
        if (getContainerFullPath() == null || getFileName() == null) {
            return null;
        }
        return ResourcesPlugin.getWorkspace().getRoot().getFile(getContainerFullPath().append(getFileName()));
    }

}