| /* |
| * 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.xdebugger.impl; |
| |
| import com.intellij.openapi.components.ServiceManager; |
| import com.intellij.openapi.project.Project; |
| import com.intellij.openapi.util.text.StringUtil; |
| import com.intellij.xdebugger.XExpression; |
| import com.intellij.xdebugger.impl.breakpoints.XExpressionImpl; |
| import org.jetbrains.annotations.NonNls; |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.annotations.Nullable; |
| |
| import java.util.*; |
| |
| /** |
| * @author nik |
| */ |
| public class XDebuggerHistoryManager { |
| public static final int MAX_RECENT_EXPRESSIONS = 10; |
| private final Map<String, LinkedList<XExpression>> myRecentExpressions = new HashMap<String, LinkedList<XExpression>>(); |
| |
| public static XDebuggerHistoryManager getInstance(@NotNull Project project) { |
| return ServiceManager.getService(project, XDebuggerHistoryManager.class); |
| } |
| |
| public boolean addRecentExpression(@NotNull @NonNls String id, @Nullable XExpression expression) { |
| if (XDebuggerUtilImpl.isEmptyExpression(expression)) { |
| return false; |
| } |
| |
| LinkedList<XExpression> list = myRecentExpressions.get(id); |
| if (list == null) { |
| list = new LinkedList<XExpression>(); |
| myRecentExpressions.put(id, list); |
| } |
| if (list.size() == MAX_RECENT_EXPRESSIONS) { |
| list.removeLast(); |
| } |
| |
| XExpression trimmedExpression = new XExpressionImpl(expression.getExpression().trim(), expression.getLanguage(), expression.getCustomInfo()); |
| list.remove(trimmedExpression); |
| list.addFirst(trimmedExpression); |
| return true; |
| } |
| |
| public List<XExpression> getRecentExpressions(@NonNls String id) { |
| LinkedList<XExpression> list = myRecentExpressions.get(id); |
| return list != null ? list : Collections.<XExpression>emptyList(); |
| } |
| } |