8zViWEbK

1class FormFragment : Fragment(), FormSection {
2
3    private val section by lazy { arguments!!.getParcelable<Section>(SECTION) }
4    private val fieldInputs = mutableListOf<FieldInput>()
5
6    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
7        val view = inflater.inflate(R.layout.form_section_fragment, container, false)
8        return view
9    }
10
11    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
12        super.onViewCreated(view, savedInstanceState)
13        renderFields(view)
14    }
15    
16    //Added function
17    override fun onUserSubmitSection() {
18        if (fieldInputs.validate()) {
19            val answers = mutableListOf<Answer>()
20            fieldInputs.forEach {
21                answers.add(it.key, it.getValue())
22            }
23            (context as SectionSubmittedListener).onSectionSubmittedWithValidAnswers(answers)
24        }
25      
26    }
27
28    // This is the method which does the magic
29    private fun renderFields(view: View) {
30        val formContainer = view.findViewById<LinearLayout>(R.id.formContainer)
31
32        //We iterate through each field and decide which component it corresponds to.
33        //All of these components created by ourselves must follow the same interface, which is FieldInput<T>
34        section.fields.forEach {
35            val fieldInput: FieldInput = when(it.type) {
36                FieldType.TEXT -> { TextInput(requireContext()) }
37                FieldType.DATE -> { DateInput(requireContext()) }
38                else -> {
39                    throw IllegalStateException("unknown type")
40                }
41            }
42
43            //we must set a key to each field so we send it back to the api as a map of the key and the value inserted
44            fieldInput.apply {
45                key = it.key
46                setLabel(it.label)
47            }
48
49            //Then we add this field to the list of the fields, so we can validate all of them and get their values
50            fieldInputs.add(fieldInput)
51            
52            //Our view only as a linear layout to hold the fields and place them one on each line
53            formContainer.addView(fieldInput as View)
54        }
55    }
56
57    companion object {
58        const val SECTION = "section"
59
60        fun newInstance(section: Section): FormFragment {
61            val fragment = FormFragment()
62            val bundle = Bundle().apply {
63                putParcelable(SECTION, section)
64            }
65            fragment.arguments = bundle
66            return fragment
67        }
68    }
69}
70
71//Added class to hold the answers
72data class Answer(val key: String, val value: String)