Theme.java

/*
 * Copyright 2000-2017 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 org.jetbrains.idea.devkit.icons;

import com.intellij.openapi.project.Project;
import com.intellij.openapi.util.io.FileUtil;
import com.intellij.openapi.vfs.VirtualFile;
import org.intellij.images.thumbnail.ThumbnailView;
import org.intellij.images.thumbnail.actions.ThemeFilter;

public enum Theme implements ThemeFilter{
  WHITE(null, "Default") {
    @Override
    public boolean accepts(VirtualFile fileName) {
      String nameWithoutExtension = FileUtil.getNameWithoutExtension(fileName.getName());
      for (Theme theme : values()) {
        String extension = theme.getExtension();
        if (extension != null && nameWithoutExtension.endsWith(extension)) {
          return false;
        }
      }

      return true;
    }
  },
  HIGH_DPI_WHITE("@2x", "Default HiDPI") {
    @Override
    public boolean accepts(VirtualFile fileName) {
      return FileUtil.getNameWithoutExtension(fileName.getName()).endsWith(getExtension());
    }
  }, 
  DARK("_dark", "Darcula") {
    @Override
    public boolean accepts(VirtualFile file) {
      String name = FileUtil.getNameWithoutExtension(file.getName());
      if (name.endsWith(getExtension()) && !name.endsWith(HIGH_DPI_DARK.getExtension())) {
        return true;
      }
      VirtualFile parent = file.getParent();
      if (parent != null && parent.findChild(name + "_dark.png") != null) {
        return false;
      }
      return WHITE.accepts(file);
    }
  }, 
  HIGH_DPI_DARK("@2x_dark", "Darcula HiDPI") {
    @Override
    public boolean accepts(VirtualFile file) {
      String name = FileUtil.getNameWithoutExtension(file.getName());
      if (name.endsWith(getExtension())) {
        return true;
      }
      VirtualFile parent = file.getParent();
      if (parent != null && parent.findChild(name + "_dark.png") != null) {
        return false;
      }
      return HIGH_DPI_WHITE.accepts(file);
    }
  };
  private final String myExtension;
  private final String myDisplayName;

  Theme(String extension, String displayName) {
    myExtension = extension;
    myDisplayName = displayName;
  }

  public String getExtension() {
    return myExtension;
  }

  public String getDisplayName() {
    return myDisplayName;
  }

  @Override
  public boolean isApplicableToProject(Project project) {
    return true;
  }

  @Override
  public void setFilter(ThumbnailView view) {
    view.setFilter(this);
  }

}