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path: root/platform/xdebugger-impl/src/com/intellij/xdebugger/impl/XDebuggerWatchesManager.java
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/*
 * Copyright 2000-2014 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.PersistentStateComponent;
import com.intellij.util.containers.ContainerUtil;
import com.intellij.util.xmlb.annotations.AbstractCollection;
import com.intellij.util.xmlb.annotations.Attribute;
import com.intellij.util.xmlb.annotations.Property;
import com.intellij.util.xmlb.annotations.Tag;
import com.intellij.xdebugger.XExpression;
import com.intellij.xdebugger.impl.breakpoints.XExpressionState;
import org.jetbrains.annotations.NotNull;

import java.util.ArrayList;
import java.util.List;
import java.util.Map;

/**
 * @author egor
 */
public class XDebuggerWatchesManager implements PersistentStateComponent<XDebuggerWatchesManager.WatchesManagerState> {
  private final Map<String, XExpression[]> watches = ContainerUtil.newConcurrentMap();

  @NotNull
  public XExpression[] getWatches(String confName) {
    XExpression[] expressions = watches.get(confName);
    if (expressions == null) {
      return new XExpression[0];
    }
    return expressions;
  }

  public void setWatches(String configurationName, XExpression[] expressions) {
    if (expressions != null && expressions.length > 0) {
      watches.put(configurationName, expressions);
    }
    else {
      watches.remove(configurationName);
    }
  }

  @Override
  public WatchesManagerState getState() {
    WatchesManagerState state = new WatchesManagerState();
    for (Map.Entry<String, XExpression[]> entry : watches.entrySet()) {
      state.expressions.add(new ConfigurationState(entry.getKey(), entry.getValue()));
    }
    return state;
  }

  @Override
  public void loadState(WatchesManagerState state) {
    watches.clear();
    if (state != null) {
      for (ConfigurationState expressionState : state.expressions) {
        WatchState[] states = expressionState.myExpressionStates;
        XExpression[] expressions = new XExpression[states.length];
        for (int i = 0; i < states.length; i++) {
          expressions[i] = states[i].toXExpression();
        }
        watches.put(expressionState.myName, expressions);
      }
    }
  }

  @Tag("watches-manager")
  public static class WatchesManagerState {
    @Property(surroundWithTag = false)
    @AbstractCollection(surroundWithTag = false)
    public List<ConfigurationState> expressions = new ArrayList<ConfigurationState>();
  }

  @Tag("configuration")
  public static class ConfigurationState {
    @Attribute("name")
    public String myName;

    @Property(surroundWithTag = false)
    @AbstractCollection(surroundWithTag = false)
    public WatchState[] myExpressionStates;

    public ConfigurationState() {
    }

    public ConfigurationState(String name, XExpression[] expressions) {
      this.myName = name;
      myExpressionStates = new WatchState[expressions.length];
      for (int i = 0; i < expressions.length; i++) {
        myExpressionStates[i] = new WatchState(expressions[i]);
      }
    }
  }
  @Tag("watch")
  public static class WatchState extends XExpressionState {
    public WatchState() {}

    public WatchState(XExpression expression) {
      super(expression);
    }
  }
}