override fun applyChanges()

in intellij-plugin/educational-core/src/com/jetbrains/edu/learning/yaml/format/TaskChangeApplier.kt [21:63]
43 lines of code
12 McCabe index (conditional complexity)

  override fun applyChanges(existingItem: Task, deserializedItem: Task) {
    @NonNls
    val messageToLog = "Project not found for ${existingItem.name}"
    val project = existingItem.project ?: error(messageToLog)
    if (existingItem.itemType != deserializedItem.itemType) {
      changeType(project, existingItem, deserializedItem)
      return
    }
    existingItem.feedbackLink = deserializedItem.feedbackLink
    @Suppress("DEPRECATION") // it's ok as we just copy value of deprecated field
    existingItem.customPresentableName = deserializedItem.customPresentableName
    existingItem.contentTags = deserializedItem.contentTags
    existingItem.solutionHidden = deserializedItem.solutionHidden
    if (deserializedItem is TheoryTask && existingItem is TheoryTask) {
      existingItem.postSubmissionOnOpen = deserializedItem.postSubmissionOnOpen
    }
    if (deserializedItem is SortingTask && existingItem is SortingTask) {
      existingItem.options = deserializedItem.options
      TaskToolWindowView.getInstance(project).updateTaskDescription()
    }
    if (deserializedItem is MatchingTask && existingItem is MatchingTask) {
      existingItem.options = deserializedItem.options
      existingItem.captions = deserializedItem.captions
      TaskToolWindowView.getInstance(project).updateTaskDescription()
    }
    if (deserializedItem is TableTask && existingItem is TableTask) {
      existingItem.rows = deserializedItem.rows
      existingItem.columns = deserializedItem.columns
      existingItem.isMultipleChoice = deserializedItem.isMultipleChoice
      TaskToolWindowView.getInstance(project).updateTaskDescription()
    }
    if (deserializedItem is ChoiceTask && existingItem is ChoiceTask) {
      existingItem.isMultipleChoice = deserializedItem.isMultipleChoice
      existingItem.choiceOptions = deserializedItem.choiceOptions
      existingItem.messageCorrect = deserializedItem.messageCorrect
      existingItem.messageIncorrect = deserializedItem.messageIncorrect
      existingItem.quizHeader = deserializedItem.quizHeader
      TaskToolWindowView.getInstance(project).updateTaskDescription()
    }
    hideOldPlaceholdersForOpenedFiles(project, existingItem)
    existingItem.applyTaskFileChanges(deserializedItem)
    paintPlaceholdersForOpenedFiles(project, existingItem)
  }