/*
 * 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.android.tools.idea.rendering;

import com.intellij.icons.AllIcons;
import com.intellij.openapi.actionSystem.AnAction;
import com.intellij.openapi.actionSystem.AnActionEvent;
import com.intellij.openapi.actionSystem.CommonDataKeys;
import com.intellij.openapi.editor.Editor;
import com.intellij.openapi.fileEditor.FileEditorManager;
import com.intellij.openapi.fileEditor.OpenFileDescriptor;
import com.intellij.openapi.project.Project;
import com.intellij.openapi.vfs.LocalFileSystem;
import com.intellij.openapi.vfs.VirtualFile;
import com.intellij.psi.PsiElement;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;

import javax.swing.*;
import java.io.File;

public class GutterIconRenderer extends com.intellij.openapi.editor.markup.GutterIconRenderer {
  private final PsiElement myElement;
  private final File myFile;
  private Icon myIcon;

  public GutterIconRenderer(@NotNull PsiElement element, @NotNull File file) {
    myElement = element;
    myFile = file;
  }

  @NotNull
  @Override
  public Icon getIcon() {
    if (myIcon == null) {
      myIcon = GutterIconCache.getInstance().getIcon(myFile.getPath());
      if (myIcon == null) {
        myIcon = AllIcons.General.Error;
      }
    }

    return myIcon;
  }

  @Nullable
  @Override
  public AnAction getClickAction() {
    return new AnAction() {
      @Override
      public void actionPerformed(AnActionEvent e) {
        final Editor editor = CommonDataKeys.EDITOR.getData(e.getDataContext());
        if (editor != null) {
          Project project = editor.getProject();
          VirtualFile virtualFile = LocalFileSystem.getInstance().findFileByIoFile(myFile);
          if (project != null && virtualFile != null) {
            OpenFileDescriptor descriptor = new OpenFileDescriptor(project, virtualFile, -1);
            FileEditorManager.getInstance(project).openEditor(descriptor, true);
          }
        }
      }
    };
  }

  @Override
  public boolean equals(Object o) {
    if (this == o) return true;
    if (o == null || getClass() != o.getClass()) return false;

    GutterIconRenderer that = (GutterIconRenderer)o;

    if (!myElement.equals(that.myElement)) return false;
    if (!myFile.equals(that.myFile)) return false;

    return true;
  }

  @Override
  public int hashCode() {
    int result = myElement.hashCode();
    result = 31 * result + myFile.hashCode();
    return result;
  }
}