io.sarl.eclipse.wizards.newfile.NewSarlFileWizardPage.java Source code

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Here is the source code for io.sarl.eclipse.wizards.newfile.NewSarlFileWizardPage.java

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/*
 * $Id$
 *
 * SARL is an general-purpose agent programming language.
 * More details on http://www.sarl.io
 *
 * Copyright (C) 2014-2017 the original authors or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package io.sarl.eclipse.wizards.newfile;

import java.io.InputStream;

import javax.inject.Inject;

import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.IPath;
import org.eclipse.jdt.core.IClasspathEntry;
import org.eclipse.jdt.core.IJavaProject;
import org.eclipse.jdt.core.JavaCore;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.ui.dialogs.WizardNewFileCreationPage;
import org.eclipse.xtext.util.StringInputStream;
import org.eclipse.xtext.xbase.conversion.XbaseValueConverterService;

import io.sarl.eclipse.SARLEclipseConfig;
import io.sarl.eclipse.SARLEclipsePlugin;
import io.sarl.lang.services.SARLGrammarKeywordAccess;

/**
 * First page of the SARL new file wizard.
 *
 * @author $Author: ngaud$
 * @version $FullVersion$
 * @mavengroupid $GroupId$
 * @mavenartifactid $ArtifactId$
 */
public class NewSarlFileWizardPage extends WizardNewFileCreationPage {

    @Inject
    private SARLGrammarKeywordAccess grammarAccess;

    @Inject
    private XbaseValueConverterService converter;

    /**
     * @param selection - selection in the IDE.
     * @param fileExtension - the extension of the file to create.
     */
    public NewSarlFileWizardPage(IStructuredSelection selection, String fileExtension) {
        super(Messages.NewSarlFileWizardPage_1, selection);
        setTitle(Messages.NewSarlFileWizardPage_1);
        setDescription(Messages.NewSarlFileWizardPage_2);
        setFileExtension(fileExtension);
        setImageDescriptor(
                SARLEclipsePlugin.getDefault().getImageDescriptor(SARLEclipseConfig.NEW_FILE_WIZARD_DIALOG_IMAGE));
    }

    private static IPath determinePackageName(IPath path) {
        if (path != null) {
            final IProject project = ResourcesPlugin.getWorkspace().getRoot().getProject(path.segment(0));
            try {
                if (project != null && project.hasNature(JavaCore.NATURE_ID)) {
                    final IJavaProject javaProject = JavaCore.create(project);
                    for (final IClasspathEntry entry : javaProject.getRawClasspath()) {
                        if (entry.getPath().isPrefixOf(path)) {
                            return path.removeFirstSegments(entry.getPath().segmentCount());
                        }
                    }
                }
            } catch (Exception e) {
                // Ignore the exceptions since they are not useful (hopefully)
            }
        }
        return null;
    }

    @Override
    protected InputStream getInitialContents() {
        final StringBuilder content = new StringBuilder();

        final IPath folderInWorkspace = getContainerFullPath();

        final IPath packagePath = determinePackageName(folderInWorkspace);

        if (packagePath != null && packagePath.segmentCount() > 0) {
            content.append(this.grammarAccess.getPackageKeyword() + " "); //$NON-NLS-1$
            final StringBuilder packageName = new StringBuilder();
            packageName.append(packagePath.segment(0));
            for (int i = 1; i < packagePath.segmentCount(); ++i) {
                packageName.append(this.grammarAccess.getFullStopKeyword());
                packageName.append(packagePath.segment(i));
            }
            content.append(this.converter.getQualifiedNameValueConverter().toString(packageName.toString()));
            content.append("\n"); //$NON-NLS-1$
        }

        return new StringInputStream(content.toString());
    }

}