| /* |
| * Copyright 2000-2012 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.components; |
| |
| import com.intellij.openapi.util.Pair; |
| import com.intellij.openapi.vfs.VirtualFile; |
| import com.intellij.openapi.vfs.VirtualFileEvent; |
| import com.intellij.util.messages.Topic; |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.annotations.Nullable; |
| |
| import java.io.File; |
| import java.util.Collection; |
| import java.util.List; |
| import java.util.Set; |
| |
| public interface StateStorage { |
| Topic<Listener> STORAGE_TOPIC = new Topic<Listener>("STORAGE_LISTENER", Listener.class, Topic.BroadcastDirection.TO_PARENT); |
| |
| @Nullable |
| <T> T getState(final Object component, @NotNull String componentName, Class<T> stateClass, @Nullable T mergeInto) throws StateStorageException; |
| |
| boolean hasState(final Object component, @NotNull String componentName, final Class<?> aClass, final boolean reloadData) throws StateStorageException; |
| |
| @NotNull |
| ExternalizationSession startExternalization(); |
| |
| @NotNull |
| SaveSession startSave(@NotNull ExternalizationSession externalizationSession); |
| |
| void finishSave(@NotNull SaveSession saveSession); |
| |
| void reload(@NotNull Set<String> changedComponents) throws StateStorageException; |
| |
| interface ExternalizationSession { |
| void setState(@NotNull Object component, final String componentName, @NotNull Object state, @Nullable final Storage storageSpec) throws StateStorageException; |
| } |
| |
| interface SaveSession { |
| void save() throws StateStorageException; |
| |
| @Nullable |
| Set<String> analyzeExternalChanges(@NotNull Set<Pair<VirtualFile, StateStorage>> changedFiles); |
| |
| @NotNull |
| Collection<File> getStorageFilesToSave() throws StateStorageException; |
| |
| @NotNull |
| List<File> getAllStorageFiles(); |
| } |
| |
| interface Listener { |
| void storageFileChanged(@NotNull VirtualFileEvent event, @NotNull StateStorage storage); |
| } |
| } |