org.eclipse.xtext.xbase.ui.builder.XbaseBuilderPreferenceAccess.java Source code

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Here is the source code for org.eclipse.xtext.xbase.ui.builder.XbaseBuilderPreferenceAccess.java

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/*******************************************************************************
 * Copyright (c) 2015 itemis AG (http://www.itemis.eu) 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
 *******************************************************************************/
package org.eclipse.xtext.xbase.ui.builder;

import org.eclipse.core.resources.IProject;
import org.eclipse.jdt.core.IJavaProject;
import org.eclipse.jdt.core.JavaCore;
import org.eclipse.jface.preference.IPreferenceStore;
import org.eclipse.xtext.builder.preferences.BuilderPreferenceAccess;
import org.eclipse.xtext.ui.editor.preferences.IPreferenceStoreAccess;
import org.eclipse.xtext.util.JavaVersion;
import org.eclipse.xtext.xbase.compiler.GeneratorConfig;

import com.google.inject.Inject;

/**
 * @author Miro Spoenemann - Initial contribution and API
 */
public class XbaseBuilderPreferenceAccess {

    /**
     * Preference identifier for generating <code>@SuppressWarnings</code>.
     */
    public static final String PREF_GENERATE_SUPPRESS_WARNINGS = "generateSuppressWarnings"; //$NON-NLS-1$
    /**
     * Preference identifier for generating <code>@Generated</code>.
     */
    public static final String PREF_GENERATE_GENERATED = "generateGeneratedAnnotation"; //$NON-NLS-1$

    /**
     * Preference identifier for including the current date in <code>@Generated</code> annotations.
     */
    public static final String PREF_DATE_IN_GENERATED = "includeDateInGenerated"; //$NON-NLS-1$

    /**
     * Preference identifier for the comment to add to <code>@Generated</code> annotations.
     */
    public static final String PREF_GENERATED_COMMENT = "generatedAnnotationComment"; //$NON-NLS-1$

    /**
     * Preference identifier for the Java language version of generated code.
     */
    public static final String PREF_JAVA_VERSION = "targetJavaVersion"; //$NON-NLS-1$

    /**
     * Preference identifier for using the version from the Java compiler source compatibility level.
     */
    public static final String PREF_USE_COMPILER_SOURCE = "useJavaCompilerCompliance"; //$NON-NLS-1$

    public static class Initializer extends BuilderPreferenceAccess.Initializer {

        @Override
        protected void initializeBuilderPreferences(IPreferenceStore store) {
            super.initializeBuilderPreferences(store);
            store.setDefault(PREF_GENERATE_SUPPRESS_WARNINGS, true);
            store.setDefault(PREF_GENERATE_GENERATED, false);
            store.setDefault(PREF_DATE_IN_GENERATED, false);
            store.setDefault(PREF_JAVA_VERSION, JavaVersion.JAVA5.toString());
            store.setDefault(PREF_USE_COMPILER_SOURCE, true);
        }

    }

    @Inject
    private IPreferenceStoreAccess preferenceStoreAccess;

    public void loadBuilderPreferences(GeneratorConfig generatorConfig, Object context) {
        IPreferenceStore preferenceStore = preferenceStoreAccess.getContextPreferenceStore(context);
        generatorConfig
                .setGenerateSyntheticSuppressWarnings(preferenceStore.getBoolean(PREF_GENERATE_SUPPRESS_WARNINGS));
        generatorConfig.setGenerateGeneratedAnnotation(preferenceStore.getBoolean(PREF_GENERATE_GENERATED));
        if (generatorConfig.isGenerateGeneratedAnnotation()) {
            generatorConfig.setIncludeDateInGeneratedAnnotation(preferenceStore.getBoolean(PREF_DATE_IN_GENERATED));
            generatorConfig.setGeneratedAnnotationComment(preferenceStore.getString(PREF_GENERATED_COMMENT));
        }
        generatorConfig.setJavaSourceVersion(getJavaVersion(context, preferenceStore));
    }

    public JavaVersion getJavaVersion(Object context, IPreferenceStore preferenceStore) {
        boolean useCompilerSource = preferenceStore.getBoolean(PREF_USE_COMPILER_SOURCE);
        if (useCompilerSource) {
            IJavaProject javaProject = JavaCore.create(context instanceof IProject ? (IProject) context : null);
            String compilerSource;
            if (javaProject != null && javaProject.exists() && javaProject.getProject().isAccessible()) {
                compilerSource = javaProject.getOption(JavaCore.COMPILER_SOURCE, true);
            } else {
                compilerSource = JavaCore.getOption(JavaCore.COMPILER_SOURCE);
            }
            return fromCompilerSourceLevel(compilerSource);
        } else {
            String stringValue = preferenceStore.getString(PREF_JAVA_VERSION);
            try {
                return JavaVersion.valueOf(stringValue);
            } catch (IllegalArgumentException exception) {
                // Fall back to default value
            }
        }
        return JavaVersion.JAVA5;
    }

    public void setJavaVersion(Object context, JavaVersion version) {
        IPreferenceStore preferenceStore = preferenceStoreAccess.getWritablePreferenceStore(context);
        preferenceStore.setValue(PREF_USE_COMPILER_SOURCE, false);
        preferenceStore.setValue(PREF_JAVA_VERSION, version.toString());
    }

    public JavaVersion fromCompilerSourceLevel(String compilerSource) {
        if ("1.8".equals(compilerSource))
            return JavaVersion.JAVA8;
        else if ("1.7".equals(compilerSource))
            return JavaVersion.JAVA7;
        else if ("1.6".equals(compilerSource))
            return JavaVersion.JAVA6;
        else
            // Versions lower than 1.5 are not supported
            return JavaVersion.JAVA5;
    }

}