| /* |
| * Copyright 2000-2009 JetBrains s.r.o. |
| * |
| * 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 com.intellij.openapi.vcs.impl; |
| |
| import com.intellij.lifecycle.PeriodicalTasksCloser; |
| import com.intellij.openapi.components.BaseComponent; |
| import com.intellij.openapi.diagnostic.Logger; |
| import com.intellij.openapi.extensions.AbstractExtensionPointBean; |
| import com.intellij.openapi.extensions.ExtensionPointName; |
| import com.intellij.openapi.project.Project; |
| import com.intellij.openapi.vcs.AbstractVcs; |
| import com.intellij.openapi.vcs.VcsActiveEnvironmentsProxy; |
| import com.intellij.util.xmlb.annotations.Attribute; |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.annotations.Nullable; |
| |
| /** |
| * @author yole |
| */ |
| public class VcsEP extends AbstractExtensionPointBean { |
| private static final Logger LOG = Logger.getInstance("#com.intellij.openapi.vcs.impl.VcsEP"); |
| |
| public static final ExtensionPointName<VcsEP> EP_NAME = ExtensionPointName.create("com.intellij.vcs"); |
| |
| // these must be public for scrambling compatibility |
| @Attribute("name") |
| public String name; |
| @Attribute("vcsClass") |
| public String vcsClass; |
| @Attribute("displayName") |
| public String displayName; |
| @Attribute("administrativeAreaName") |
| public String administrativeAreaName; |
| @Attribute("crawlUpToCheckUnderVcs") |
| public boolean crawlUpToCheckUnderVcs; |
| |
| private AbstractVcs myVcs; |
| private final Object LOCK = new Object(); |
| |
| @Nullable |
| public AbstractVcs getVcs(@NotNull Project project) { |
| synchronized (LOCK) { |
| if (myVcs != null) { |
| return myVcs; |
| } |
| } |
| AbstractVcs vcs = getInstance(project, vcsClass); |
| synchronized (LOCK) { |
| if (myVcs == null) { |
| myVcs = VcsActiveEnvironmentsProxy.proxyVcs(vcs); |
| } |
| return myVcs; |
| } |
| } |
| |
| @Nullable |
| private AbstractVcs getInstance(@NotNull Project project, @NotNull String vcsClass) { |
| try { |
| final Class<? extends AbstractVcs> foundClass = findClass(vcsClass); |
| final Class<?>[] interfaces = foundClass.getInterfaces(); |
| for (Class<?> anInterface : interfaces) { |
| if (BaseComponent.class.isAssignableFrom(anInterface)) { |
| return PeriodicalTasksCloser.getInstance().safeGetComponent(project, foundClass); |
| } |
| } |
| return instantiate(vcsClass, project.getPicoContainer()); |
| } |
| catch(Exception e) { |
| LOG.error(e); |
| return null; |
| } |
| } |
| |
| @NotNull |
| public VcsDescriptor createDescriptor() { |
| return new VcsDescriptor(administrativeAreaName, displayName, name, crawlUpToCheckUnderVcs); |
| } |
| } |