| /******************************************************************************* |
| * Copyright (c) 2001, 2004 IBM Corporation 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: |
| * IBM Corporation - initial API and implementation |
| * Jens Lukowski/Innoopract - initial renaming/restructuring |
| * |
| *******************************************************************************/ |
| package org.eclipse.wst.sse.core.internal.encoding; |
| |
| import org.eclipse.core.runtime.IPath; |
| import org.eclipse.core.runtime.Platform; |
| import org.eclipse.core.runtime.Plugin; |
| import org.eclipse.core.runtime.content.IContentType; |
| import org.eclipse.core.runtime.preferences.DefaultScope; |
| import org.eclipse.core.runtime.preferences.IEclipsePreferences; |
| import org.osgi.framework.Bundle; |
| import org.osgi.service.prefs.Preferences; |
| |
| |
| public class ContentBasedPreferenceGateway { |
| private static String DEFAULT_LOCATION = "org.eclipse.wst.sse.core"; //$NON-NLS-1$ |
| private static String RUNTIME_XML_ID = "org.eclipse.core.runtime.xml"; //$NON-NLS-1$ |
| private static String SSE_XML_ID = "org.eclipse.wst.xml.core.xmlsource"; //$NON-NLS-1$ |
| |
| /** |
| * @param pluginId |
| * @return |
| */ |
| private static boolean bundleExists(String pluginId) { |
| |
| // this just verifies there's really a plugin with this ID in "stack" |
| Bundle bundle = Platform.getBundle(pluginId); |
| return (!(bundle == null)); |
| } |
| |
| /** |
| * @param contentType |
| * @return |
| */ |
| private static String getContributorPluginId(IContentType contentType) { |
| // TODO: need to have registration info here, but for now, we'll use |
| // simple heuristic to cover the cases we know about. |
| String fullId = null; |
| if (contentType == null) { |
| fullId = DEFAULT_LOCATION; |
| } else { |
| fullId = contentType.getId(); |
| } |
| // only one known case, so far, of hard coded re-direction |
| // (not sure this is even needed, but just in case). |
| // We don't want to store/change runtime.xml preferences |
| if (RUNTIME_XML_ID.equals(fullId)) { |
| fullId = SSE_XML_ID; |
| } |
| String pluginId = inferPluginId(fullId); |
| return pluginId; |
| } |
| |
| private static Preferences getDefaultPreferences(IContentType contentType) { |
| IEclipsePreferences eclipsePreferences = Platform.getPreferencesService().getRootNode(); |
| // TODO: eventaully need extension mechanism to avoid these hard coded |
| // mechanism. |
| // The idea is to load/store based on plugin's preferences, where the |
| // content type was contributed |
| // Eventually, too, we could do more "dynamic lookup" to get parent |
| // types for defaults, etc. |
| |
| // Get default plugin preferences |
| String pluginPreferenceLocation = DefaultScope.SCOPE + IPath.SEPARATOR + getContributorPluginId(contentType); |
| Preferences pluginPreferences = eclipsePreferences.node(pluginPreferenceLocation); |
| |
| // the below code does not work at this time because content type |
| // preferences are stored in the place as plugin preferences |
| |
| // Preferences contentPreferences = null; |
| // if (contentType != null) { |
| // contentPreferences = pluginPreferences.node(contentType.getId()); |
| // } |
| // else { |
| // contentPreferences = pluginPreferences.node(DEFAULT_LOCATION ); |
| // } |
| // |
| // return contentPreferences; |
| |
| return pluginPreferences; |
| |
| } |
| |
| private static Preferences getDefaultPreferences(String contentTypeId) { |
| IContentType contentType = Platform.getContentTypeManager().getContentType(contentTypeId); |
| return getDefaultPreferences(contentType); |
| } |
| |
| public static Preferences getPreferences(IContentType contentType) { |
| IEclipsePreferences eclipsePreferences = Platform.getPreferencesService().getRootNode(); |
| // TODO: eventaully need extension mechanism to avoid these hard coded |
| // mechanism. |
| // The idea is to load/store based on plugin's preferences, where the |
| // content type was contributed |
| // Eventually, too, we could do more "dynamic lookup" to get parent |
| // types for defaults, etc. |
| |
| // Get instance plugin preferences |
| String pluginPreferenceLocation = Plugin.PLUGIN_PREFERENCE_SCOPE + IPath.SEPARATOR + getContributorPluginId(contentType); |
| Preferences pluginPreferences = eclipsePreferences.node(pluginPreferenceLocation); |
| |
| // the below code does not work at this time because content type |
| // preferences are stored in the place as plugin preferences |
| |
| // Preferences contentPreferences = null; |
| // if (contentType != null) { |
| // contentPreferences = pluginPreferences.node(contentType.getId()); |
| // } |
| // else { |
| // contentPreferences = pluginPreferences.node(DEFAULT_LOCATION ); |
| // } |
| // |
| // return contentPreferences; |
| return pluginPreferences; |
| |
| } |
| |
| public static Preferences getPreferences(String contentTypeId) { |
| IContentType contentType = Platform.getContentTypeManager().getContentType(contentTypeId); |
| return getPreferences(contentType); |
| } |
| |
| public static String getPreferencesString(IContentType contentType, String key) { |
| Preferences preferences = getPreferences(contentType); |
| String value = preferences.get(key, getDefaultPreferences(contentType).get(key, null)); |
| return value; |
| } |
| |
| public static String getPreferencesString(String contentTypeId, String key) { |
| Preferences preferences = getPreferences(contentTypeId); |
| String value = preferences.get(key, getDefaultPreferences(contentTypeId).get(key, null)); |
| return value; |
| } |
| |
| /** |
| * @param fullId |
| * @return |
| */ |
| private static String inferPluginId(String fullId) { |
| // simply trim off last "segment" from full ID. |
| int lastSegmentPos = fullId.lastIndexOf('.'); |
| String pluginId = null; |
| if (lastSegmentPos != -1) { |
| pluginId = fullId.substring(0, lastSegmentPos); |
| } else { |
| // weird case? We'll at least put/get them somewhere |
| pluginId = DEFAULT_LOCATION; |
| } |
| if (!bundleExists(pluginId)) { |
| // use default location |
| pluginId = DEFAULT_LOCATION; |
| } |
| return pluginId; |
| } |
| } |