platform/editor-ui-api/src/com/intellij/openapi/editor/TextAnnotationGutterProvider.java

/*
 * Copyright 2000-2013 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.openapi.editor;

import com.intellij.openapi.actionSystem.AnAction;
import com.intellij.openapi.editor.colors.ColorKey;
import com.intellij.openapi.editor.colors.EditorFontType;
import org.jetbrains.annotations.Nullable;

import java.awt.*;
import java.util.List;

/**
 * Interface which should be implemented in order to draw custom text annotations in the
 * editor gutter.
 *
 * @author max
 * @author Konstantin Bulenkov
 * @see EditorGutter#registerTextAnnotation(TextAnnotationGutterProvider)
 */
public interface TextAnnotationGutterProvider {
  /**
   * Returns the text which should be drawn for the line with the specified number in the specified editor.
   *
   * @param line   the line for which the text is requested.
   * @param editor the editor in which the text will be drawn.
   * @return the text to draw, or null if no text should be drawn.
   */
  @Nullable
  String getLineText(int line, Editor editor);

  @Nullable
  String getToolTip(int line, Editor editor);

  EditorFontType getStyle(int line, Editor editor);

  @Nullable
  ColorKey getColor(int line, Editor editor);

  /**
   * Returns the background color for the text
   *
   * @since 9.0.2
   *
   * @param line the line for which the background color is requested.
   * @param editor the editor in which the text will be drawn.
   * @return the text to draw, or null if no text should be drawn.
   */
  @Nullable
  Color getBgColor(int line, Editor editor);

  /***
   * enables annotation view modifications
   */
  List<AnAction> getPopupActions(final int line, final Editor editor);

  /**
   * Called when the annotations are removed from the editor gutter.
   *
   * @see EditorGutter#closeAllAnnotations()
   */
  void gutterClosed();
}