RainbowColorsInSchemeState.java

/*
 * Copyright 2000-2016 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.application.options.colors;

import com.intellij.codeHighlighting.RainbowHighlighter;
import com.intellij.codeInsight.daemon.DaemonCodeAnalyzer;
import com.intellij.lang.Language;
import com.intellij.openapi.editor.Editor;
import com.intellij.openapi.editor.EditorFactory;
import com.intellij.openapi.editor.colors.EditorColorsScheme;
import com.intellij.openapi.editor.colors.TextAttributesKey;
import com.intellij.openapi.project.Project;
import com.intellij.psi.PsiDocumentManager;
import com.intellij.psi.PsiFile;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;

import java.awt.*;

public class RainbowColorsInSchemeState {
  private final EditorColorsScheme myEditedScheme;
  private final EditorColorsScheme myOriginalScheme;

  public RainbowColorsInSchemeState(@NotNull EditorColorsScheme editedScheme,
                                    @NotNull EditorColorsScheme originalScheme) {
    myEditedScheme = editedScheme;
    myOriginalScheme = originalScheme;
  }

  public void apply(@Nullable EditorColorsScheme scheme) {
    if (scheme != null && scheme != myEditedScheme) {
      RainbowHighlighter.transferRainbowState(scheme, myEditedScheme);
      for (TextAttributesKey key : RainbowHighlighter.RAINBOW_COLOR_KEYS) {
        Color color = myEditedScheme.getAttributes(key).getForegroundColor();
        if (!color.equals(scheme.getAttributes(key).getForegroundColor()) ) {
          scheme.setAttributes(key, RainbowHighlighter.createRainbowAttribute(color));
        }
      }
      updateRainbowMarkup();
    }
  }

  private static void updateRainbowMarkup() {
    Editor[] allEditors = EditorFactory.getInstance().getAllEditors();
    for (Editor editor : allEditors) {
      final Project project = editor.getProject();
      if (project != null) {
        PsiFile file = PsiDocumentManager.getInstance(project).getPsiFile(editor.getDocument());
        if (file != null) {
          DaemonCodeAnalyzer.getInstance(project).restart(file);
        }
      }
    }
  }

  public boolean isModified(@Nullable Language language) {
    return (language == null && isRainbowColorsModified())
           || RainbowHighlighter.isRainbowEnabled(myEditedScheme, language) != RainbowHighlighter.isRainbowEnabled(myOriginalScheme, language);
  }

  private boolean isRainbowColorsModified() {
    for (TextAttributesKey key : RainbowHighlighter.RAINBOW_COLOR_KEYS) {
      if (!myEditedScheme.getAttributes(key).equals(myOriginalScheme.getAttributes(key)) ) {
        return true;
      }
    }
    return false;
  }
}