@Nullable
  @Override
  public ValidationInfo validate() {
    if (getSdkData() == null) {
      return new ValidationInfo(GoBundle.message("error.invalid.sdk.path", mySdkPath.getText()));
    }

    String goSdkPath = mySdkPath.getText();

    GoSdkType goSdk = new GoSdkType();
    if (!goSdk.isValidSdkHome(goSdkPath)) {
      return new ValidationInfo(GoBundle.message("error.invalid.sdk.path", mySdkPath.getText()));
    }

    GoSdkData goSdkData = GoSdkUtil.testGoogleGoSdk(goSdkPath);

    if (goSdkData == null) {
      return new ValidationInfo(GoBundle.message("error.invalid.sdk.path", mySdkPath.getText()));
    }

    goSdkData.GO_GOPATH_PATH = gopathPath.getText();

    labelSdkVersion.setText(goSdkData.VERSION_MAJOR);
    if (goSdkData.TARGET_OS != null && goSdkData.TARGET_ARCH != null) {
      labelSdkTarget.setText(
          String.format(
              "%s-%s (%s, %s)",
              goSdkData.TARGET_OS.getName(),
              goSdkData.TARGET_ARCH.getName(),
              GoSdkUtil.getCompilerName(goSdkData.TARGET_ARCH),
              GoSdkUtil.getLinkerName(goSdkData.TARGET_ARCH)));
    } else {
      labelSdkTarget.setText("Unknown target");
    }

    labelBinariesPath.setText(goSdkData.GO_BIN_PATH);
    return null;
  }
  @Override
  public void initComponent() {
    ProjectJdkTable jdkTable = ProjectJdkTable.getInstance();
    List<Sdk> sdkList = new ArrayList<Sdk>();

    sdkList.addAll(GoSdkUtil.getSdkOfType(GoSdkType.getInstance(), jdkTable));

    for (Sdk sdk : sdkList) {
      GoSdkData sdkData = (GoSdkData) sdk.getSdkAdditionalData();

      boolean needsUpgrade = sdkData == null;
      try {
        if (!needsUpgrade) {
          sdkData.checkValid();
        }
      } catch (ConfigurationException ex) {
        needsUpgrade = true;
      }

      if (!needsUpgrade) continue;

      needsUpgrade = false;
      GoSdkData data = GoSdkUtil.testGoogleGoSdk(sdk.getHomePath());

      if (data == null) needsUpgrade = true;

      try {
        if (data != null) {
          data.checkValid();
        }
      } catch (ConfigurationException ex) {
        needsUpgrade = true;
      }

      if (needsUpgrade) {
        Notifications.Bus.notify(
            new Notification(
                "Go SDK validator",
                "Corrupt Go SDK",
                getContent("Go", sdk.getName()),
                NotificationType.WARNING),
            myProject);
      }

      SdkModificator sdkModificator = sdk.getSdkModificator();
      sdkModificator.setSdkAdditionalData(data);
      sdkModificator.commitChanges();
    }

    sdkList.clear();
    sdkList.addAll(GoSdkUtil.getSdkOfType(GoAppEngineSdkType.getInstance(), jdkTable));

    Boolean hasGAESdk = sdkList.size() > 0;

    for (Sdk sdk : sdkList) {
      GoAppEngineSdkData sdkData = (GoAppEngineSdkData) sdk.getSdkAdditionalData();

      if (sdkData == null || sdkData.TARGET_ARCH == null || sdkData.TARGET_OS == null) {
        Notifications.Bus.notify(
            new Notification(
                "Go AppEngine SDK validator",
                "Corrupt Go App Engine SDK",
                getContent("Go App Engine", sdk.getName()),
                NotificationType.WARNING),
            myProject);

        continue;
      }

      boolean needsUpgrade = false;
      try {
        sdkData.checkValid();
      } catch (ConfigurationException ex) {
        needsUpgrade = true;
      }

      if (!needsUpgrade) continue;

      needsUpgrade = false;
      GoAppEngineSdkData data = GoSdkUtil.testGoAppEngineSdk(sdk.getHomePath());

      if (data == null) needsUpgrade = true;

      try {
        if (data != null) {
          data.checkValid();
        }
      } catch (ConfigurationException ex) {
        needsUpgrade = true;
      }

      // GAE SDK auto-update needs a bit more love
      if (data != null && !(new File(data.GOAPP_BIN_PATH)).exists()) {
        needsUpgrade = true;
      }

      if (needsUpgrade) {
        Notifications.Bus.notify(
            new Notification(
                "Go AppEngine SDK validator",
                "Corrupt Go App Engine SDK",
                getContent("Go AppEngine", sdk.getName()),
                NotificationType.WARNING),
            myProject);
      }

      SdkModificator sdkModificator = sdk.getSdkModificator();
      sdkModificator.setSdkAdditionalData(data);
      sdkModificator.commitChanges();
    }

    if (hasGAESdk) {
      String sysAppEngineDevServerPath = GoSdkUtil.getAppEngineDevServer();
      if (sysAppEngineDevServerPath.isEmpty())
        Notifications.Bus.notify(
            new Notification(
                "Go AppEngine SDK validator",
                "Problem with env variables",
                getInvalidAPPENGINE_DEV_APPSERVEREnvMessage(),
                NotificationType.WARNING,
                NotificationListener.URL_OPENING_LISTENER),
            myProject);
    }

    PluginDescriptor pluginDescriptor =
        PluginManager.getPlugin(PluginId.getId("ro.redeul.google.go"));
    if (pluginDescriptor != null) {
      String version = ((IdeaPluginDescriptorImpl) pluginDescriptor).getVersion();

      if (version.endsWith("-dev")
          && !System.getProperty("go.skip.dev.warn", "false").equals("true")) {
        Notifications.Bus.notify(
            new Notification(
                "Go plugin notice",
                "Development version detected",
                getDevVersionMessage(),
                NotificationType.WARNING,
                null),
            myProject);
      }
    }

    super.initComponent();
  }