platform/lang-api/src/com/intellij/usageView/UsageTreeColorsScheme.java

/*
 * 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.usageView;

import com.intellij.openapi.components.NamedComponent;
import com.intellij.openapi.components.ServiceManager;
import com.intellij.openapi.editor.colors.EditorColorsManager;
import com.intellij.openapi.editor.colors.EditorColorsScheme;
import com.intellij.openapi.editor.colors.EditorColorsUtil;
import com.intellij.openapi.util.InvalidDataException;
import com.intellij.openapi.util.JDOMExternalizable;
import com.intellij.openapi.util.WriteExternalException;
import com.intellij.util.ui.UIUtil;
import org.jdom.Element;
import org.jetbrains.annotations.NotNull;

public class UsageTreeColorsScheme implements NamedComponent, JDOMExternalizable {
  private EditorColorsScheme myColorsScheme;

  /**
   * @noinspection UnusedParameters
   */
  public UsageTreeColorsScheme(EditorColorsManager editorColorsManager) {
  }

  public static UsageTreeColorsScheme getInstance() {
    return ServiceManager.getService(UsageTreeColorsScheme.class);
  }

  @Override
  @NotNull
  public String getComponentName() {
    return "FindViewColorsScheme";
  }

  public EditorColorsScheme getScheme() {
    return myColorsScheme;
  }

  @Override
  public void readExternal(Element element) throws InvalidDataException {
    if (myColorsScheme == null) {
      EditorColorsScheme scheme = EditorColorsUtil.getColorSchemeForBackground(UIUtil.getTreeTextBackground());
      myColorsScheme = (EditorColorsScheme)scheme.clone();
    }
    myColorsScheme.readExternal(element);
  }

  @Override
  public void writeExternal(Element element) throws WriteExternalException {
    throw new WriteExternalException();
  }
}