/*
 * Copyright 2000-2010 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.vcs.actions;

import com.intellij.openapi.actionSystem.AnAction;
import com.intellij.openapi.editor.Editor;
import com.intellij.openapi.editor.colors.ColorKey;
import com.intellij.openapi.editor.colors.EditorFontType;
import com.intellij.openapi.localVcs.UpToDateLineNumberProvider;
import com.intellij.openapi.vcs.annotate.AnnotationSource;

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

/**
 * @author Irina Chernushina
 * @author Konstantin Bulenkov
 */
public class AnnotationGutterLineConvertorProxy implements ActiveAnnotationGutter {
  private final UpToDateLineNumberProvider myGetUpToDateLineNumber;
  private final ActiveAnnotationGutter myDelegate;

  public AnnotationGutterLineConvertorProxy(final UpToDateLineNumberProvider getUpToDateLineNumber, final ActiveAnnotationGutter delegate) {
    myGetUpToDateLineNumber = getUpToDateLineNumber;
    myDelegate = delegate;
  }

  public String getLineText(int line, Editor editor) {
    int currentLine = myGetUpToDateLineNumber.getLineNumber(line);
    if (!canBeAnnotated(currentLine)) return "";
    return myDelegate.getLineText(currentLine, editor);
  }

  public String getToolTip(int line, Editor editor) {
    int currentLine = myGetUpToDateLineNumber.getLineNumber(line);
    if (!canBeAnnotated(currentLine)) return "";
    return myDelegate.getToolTip(currentLine, editor);
  }

  public EditorFontType getStyle(int line, Editor editor) {
    int currentLine = myGetUpToDateLineNumber.getLineNumber(line);
    if (!canBeAnnotated(currentLine)) return EditorFontType.PLAIN;
    return myDelegate.getStyle(currentLine, editor);
  }

  public ColorKey getColor(int line, Editor editor) {
    int currentLine = myGetUpToDateLineNumber.getLineNumber(line);
    if (!canBeAnnotated(currentLine)) return AnnotationSource.LOCAL.getColor();
    return myDelegate.getColor(currentLine, editor);
  }

  public Color getBgColor(int line, Editor editor) {
    int currentLine = myGetUpToDateLineNumber.getLineNumber(line);
    if (!canBeAnnotated(currentLine)) return null;
    return myDelegate.getBgColor(currentLine, editor);
  }

  public List<AnAction> getPopupActions(int line, Editor editor) {
    return myDelegate.getPopupActions(line, editor);
  }

  public void gutterClosed() {
    myDelegate.gutterClosed();
  }

  public void doAction(int lineNum) {
    int currentLine = myGetUpToDateLineNumber.getLineNumber(lineNum);
    if (!canBeAnnotated(currentLine)) return;
    myDelegate.doAction(currentLine);
  }

  public Cursor getCursor(int lineNum) {
    int currentLine = myGetUpToDateLineNumber.getLineNumber(lineNum);
    if (!canBeAnnotated(currentLine)) return Cursor.getDefaultCursor();
    return myDelegate.getCursor(currentLine);
  }

  private static boolean canBeAnnotated(int currentLine) {
    return currentLine >= 0;
  }
}
