/*
 * Copyright 2009 Google Inc.
 *
 * 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.google.jstestdriver.idea.ui;

import com.google.inject.Inject;
import com.google.jstestdriver.CapturedBrowsers;
import com.google.jstestdriver.JsTestDriverServer;

import java.awt.Color;
import java.util.Observable;
import java.util.Observer;
import java.util.ResourceBundle;

import javax.swing.JLabel;
import javax.swing.JPanel;

/**
 * @author alexeagle@google.com (Alex Eagle)
 */
public class StatusBar extends JPanel implements Observer {

  private static final long serialVersionUID = 8729866568493622493L;

  public enum Status {
    NOT_RUNNING {

      @Override
      public Color getColor() {
        return Color.decode("#FF6666");
      }
    },
    NO_BROWSERS {

      @Override
      public Color getColor() {
        return Color.decode("#FFFF66");
      }
    },
    READY {

      @Override
      public Color getColor() {
        return Color.decode("#66CC66");
      }
    };

    public abstract Color getColor();
  }

  private JLabel label;
  private final ResourceBundle messageBundle;

  @Inject
  public StatusBar(Status status, ResourceBundle messageBundle) {
    label = new JLabel();
    add(label);
    this.messageBundle = messageBundle;
    this.setStatus(status);
  }

  private void setStatus(Status status) {
    this.setBackground(status.getColor());
    label.setText(messageBundle.getString(status.name()));
  }

  public void update(Observable observable, Object event) {
    if (observable instanceof JsTestDriverServer) {
      switch ((JsTestDriverServer.Event) event) {
        case STARTED:
          setStatus(Status.NO_BROWSERS);
          break;
        case STOPPED:
          setStatus(Status.NOT_RUNNING);
          break;
      }
    } else if (observable instanceof CapturedBrowsers) {
      if (((CapturedBrowsers)observable).getBrowsers().isEmpty()) {
        setStatus(Status.NO_BROWSERS);
      } else {
        setStatus(Status.READY);
      }
    }
  }
}