Copyright (c) 2008, 2012 IBM Corporation and others.
This program and the accompanying materials
are made available under the terms of the Eclipse Public License 2.0
which accompanies this distribution, and is available at
https://www.eclipse.org/legal/epl-2.0/
SPDX-License-Identifier: EPL-2.0
Contributors:
    IBM Corporation - initial API and implementation
/*******************************************************************************
 * Copyright (c) 2008, 2012 IBM Corporation and others.
 *
 * This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License 2.0
 * which accompanies this distribution, and is available at
 * https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.jdt.internal.launching;

import org.eclipse.core.runtime.preferences.AbstractPreferenceInitializer;
import org.eclipse.core.runtime.preferences.DefaultScope;
import org.eclipse.core.runtime.preferences.IEclipsePreferences;
import org.eclipse.debug.core.ILaunchConfiguration;
import org.eclipse.jdt.core.JavaCore;
import org.eclipse.jdt.launching.JavaRuntime;
import org.osgi.service.prefs.BackingStoreException;

Initializes preferences for the JDT launching plug-in.
Since:
3.5/**
 * Initializes preferences for the JDT launching plug-in.
 *
 * @since 3.5
 */
public class LaunchingPreferenceInitializer extends AbstractPreferenceInitializer {

	/* (non-Javadoc)
	 * @see org.eclipse.core.runtime.preferences.AbstractPreferenceInitializer#initializeDefaultPreferences()
	 */
	@Override
	public void initializeDefaultPreferences() {
		IEclipsePreferences dnode = DefaultScope.INSTANCE.getNode(LaunchingPlugin.ID_PLUGIN);
		if(dnode == null) {
			return;
		}
		dnode.putInt(JavaRuntime.PREF_CONNECT_TIMEOUT, JavaRuntime.DEF_CONNECT_TIMEOUT);
		dnode.put(JavaRuntime.PREF_STRICTLY_COMPATIBLE_JRE_NOT_AVAILABLE, JavaCore.WARNING);
		dnode.put(JavaRuntime.PREF_COMPILER_COMPLIANCE_DOES_NOT_MATCH_JRE, JavaCore.WARNING);
		dnode.putBoolean(JavaRuntime.PREF_ONLY_INCLUDE_EXPORTED_CLASSPATH_ENTRIES, false);
		try {
			dnode.flush();
		} catch (BackingStoreException e) {
			LaunchingPlugin.log(e);
		}

		// https://bugs.eclipse.org/bugs/show_bug.cgi?id=255381
		// NOTE: only the pref's default value is initialized to avoid deadlock (we don't set the
		// associated JavaCore options, as this can trigger a job to touch the project (see
		// bug https://bugs.eclipse.org/bugs/show_bug.cgi?id=260445)
		String launchFilter = "*." + ILaunchConfiguration.LAUNCH_CONFIGURATION_FILE_EXTENSION; //$NON-NLS-1$
		dnode = DefaultScope.INSTANCE.getNode(JavaCore.PLUGIN_ID);
		if(dnode == null) {
			return;
		}
		//check to see if another plug-in has contributed to these defaults as well
		//https://bugs.eclipse.org/bugs/show_bug.cgi?id=395366
		String val = dnode.get(JavaCore.CORE_JAVA_BUILD_RESOURCE_COPY_FILTER, (String)null);
		if(val != null && !"".equals(val)) { //$NON-NLS-1$
			String[] filters = val.split(","); //$NON-NLS-1$
			StringBuilder buff = new StringBuilder();
			boolean found = false;
			for (int i = 0; i < filters.length; i++) {
				if(launchFilter.equals(val)) {
					found = true;
					break;
				}
				String filter = filters[i].trim();
				buff.append(filter);
				if(i < filters.length-1) {
					buff.append(',');
				}
			}
			if(!found) {
				launchFilter = buff.append(',').append(launchFilter).toString();
				dnode.put(JavaCore.CORE_JAVA_BUILD_RESOURCE_COPY_FILTER, launchFilter);
			}
		}
		else {
			dnode.put(JavaCore.CORE_JAVA_BUILD_RESOURCE_COPY_FILTER, launchFilter);
		}

		try {
			dnode.flush();
		} catch (BackingStoreException e) {
			LaunchingPlugin.log(e);
		}
	}
}