Average grade improvement

app/src/main/java/de/tum/in/tumcampusapp/api/app/DateSerializer.kt

@@ -14,9 +14,14 @@ import java.util.*
  */
 class DateSerializer : JsonDeserializer<DateTime>, JsonSerializer<DateTime> {
     private val formatStrings = arrayOf(
-            "yyyy-MM-dd",
-            "yyyy-MM-dd HH:mm:ss",
-            "yyyy-MM-dd'T'HH:mm:ss'Z'"
+        "dd.MM.yy",
+        "dd.MM.yyyy",
+        "yyyy.MM.dd",
+        "dd-MM-yy",
+        "dd-MM-yyyy",
+        "yyyy-MM-dd",
+        "yyyy-MM-dd HH:mm:ss",
+        "yyyy-MM-dd'T'HH:mm:ss'Z'"
     )
 
     private val dateFormats = formatStrings.map {
@@ -37,7 +42,11 @@ class DateSerializer : JsonDeserializer<DateTime>, JsonSerializer<DateTime> {
         throw JsonParseException("Unparseable date: \"${json?.asString.orEmpty()}\". Supported formats: ${formatStrings.contentToString()}")
     }
 
-    override fun serialize(time: DateTime, typeOfT: Type, context: JsonSerializationContext): JsonElement {
+    override fun serialize(
+        time: DateTime,
+        typeOfT: Type,
+        context: JsonSerializationContext
+    ): JsonElement {
         return JsonPrimitive(DateTimeUtils.getDateString(time))
     }
 }

app/src/main/java/de/tum/in/tumcampusapp/api/tumonline/converters/DateTimeConverter.kt

@@ -9,9 +9,11 @@ import org.joda.time.format.DateTimeFormat
 class DateTimeConverter : TypeConverter<DateTime?> {
 
     private val formats = arrayOf(
-            "yyyy-MM-dd",
-            "yyyy-MM-dd HH:mm",
-            "yyyy-MM-dd HH:mm:ss"
+        "dd.MM.yy",
+        "dd.MM.yyyy",
+        "yyyy-MM-dd",
+        "yyyy-MM-dd HH:mm",
+        "yyyy-MM-dd HH:mm:ss"
     )
 
     override fun read(value: String?): DateTime? {

app/src/main/java/de/tum/in/tumcampusapp/component/tumui/grades/ExamListAdapter.kt

@@ -4,6 +4,13 @@ import android.content.Context
 import android.view.View
 import android.view.ViewGroup
 import android.widget.TextView
+import android.widget.EditText
+import android.widget.LinearLayout
+import android.widget.CheckBox
+import android.widget.Button
+import android.widget.ImageView
+import androidx.appcompat.app.AlertDialog
+import androidx.core.content.ContextCompat
 import de.tum.`in`.tumcampusapp.R
 import de.tum.`in`.tumcampusapp.component.other.generic.adapter.SimpleStickyListHeadersAdapter
 import de.tum.`in`.tumcampusapp.component.tumui.grades.model.Exam
@@ -12,7 +19,10 @@ import org.joda.time.format.DateTimeFormat
 /**
  * Custom UI adapter for a list of exams.
  */
-class ExamListAdapter(context: Context, results: List<Exam>) : SimpleStickyListHeadersAdapter<Exam>(context, results.toMutableList()) {
+class ExamListAdapter(context: Context, results: List<Exam>, gradesFragment: GradesFragment) :
+    SimpleStickyListHeadersAdapter<Exam>(context, results.toMutableList()) {
+
+    val localGradesFragment: GradesFragment = gradesFragment
 
     init {
         itemList.sort()
@@ -32,24 +42,175 @@ class ExamListAdapter(context: Context, results: List<Exam>) : SimpleStickyListH
         }
 
         val exam = itemList[position]
-        holder.nameTextView.text = exam.course
-        holder.gradeTextView.text = exam.grade
 
-        val gradeColor = exam.getGradeColor(context)
-        holder.gradeTextView.background.setTint(gradeColor)
+        initUIEditElements(holder, exam)
+        initUIDisplayElements(holder, exam)
+        return view
+    }
 
+    private fun initUIDisplayElements(holder: ViewHolder, exam: Exam) {
+        holder.nameTextView.text = exam.course
+        holder.gradeTextView.text = exam.grade
+        adaptUIToCheckboxStatus(holder, exam)
         val date: String = if (exam.date == null) {
             context.getString(R.string.not_specified)
         } else {
             DATE_FORMAT.print(exam.date)
         }
-        holder.examDateTextView.text = String.format("%s: %s", context.getString(R.string.date), date)
+        holder.examDateTextView.text =
+            String.format("%s: %s", context.getString(R.string.date), date)
 
-        holder.additionalInfoTextView.text = String.format("%s: %s, %s: %s",
-                context.getString(R.string.examiner), exam.examiner,
-                context.getString(R.string.mode), exam.modus)
+        holder.additionalInfoTextView.text = String.format(
+            "%s: %s, %s: %s",
+            context.getString(R.string.examiner), exam.examiner,
+            context.getString(R.string.mode), exam.modus
+        )
+    }
 
-        return view
+    /**
+     * Init the ui Elements to change the parameters of the grade
+     */
+    private fun initUIEditElements(holder: ViewHolder, exam: Exam) {
+        if (localGradesFragment.isEditModeEnabled()) {
+            holder.editGradesContainer.visibility = View.GONE
+            holder.gradeTextViewDeleteCustomGrade.visibility = View.GONE
+        } else {
+            holder.editGradesContainer.visibility = View.VISIBLE
+
+            initListenerDeleteCustomGrade(exam, holder)
+            initListenerEditTexts(exam, holder)
+            initListenerResetGradeParameters(exam, holder)
+            initCheckBoxUsedInAverage(exam, holder)
+        }
+    }
+
+    /**
+     * Adds a ClickListener which will show a confirmation dialog whether the exam should actually be deleted.
+     */
+    private fun initListenerDeleteCustomGrade(exam: Exam, holder: ViewHolder) {
+        if (exam.manuallyAdded) {
+            holder.gradeTextViewDeleteCustomGrade.visibility = View.VISIBLE
+
+            holder.gradeTextViewDeleteCustomGrade.setOnClickListener {
+                val dialog = AlertDialog.Builder(localGradesFragment.requireContext())
+                    .setTitle(context.getString(R.string.delete_exam))
+                    .setMessage(
+                        context.getString(R.string.delete_exam_dialog_message)
+                    )
+                    .setPositiveButton(R.string.delete) { _, _ ->
+
+                        localGradesFragment.deleteExamFromList(exam)
+                    }
+                    .setNegativeButton(android.R.string.cancel, null)
+                    .create()
+                    .apply {
+                        window?.setBackgroundDrawableResource(R.drawable.rounded_corners_background)
+                    }
+                dialog.show()
+                dialog.getButton(AlertDialog.BUTTON_NEGATIVE).setTextColor(
+                    localGradesFragment.resources.getColor(R.color.text_primary)
+                )
+                dialog.getButton(AlertDialog.BUTTON_POSITIVE).setTextColor(
+                    localGradesFragment.resources.getColor(R.color.text_primary)
+                )
+            }
+        } else {
+            holder.gradeTextViewDeleteCustomGrade.visibility = View.GONE
+        }
+    }
+
+    /**
+     * Adds on Focus change listeners which store the value to the exam object if and only if the
+     * user finished editing the exam.
+     */
+    private fun initListenerEditTexts(exam: Exam, holder: ViewHolder) {
+        holder.editTextGradeWeights.setOnFocusChangeListener { _, hasFocus ->
+            if (!hasFocus) {
+                val oldWeight = holder.editTextGradeWeights.text.toString().toDouble()
+                if (exam.weight != oldWeight) {
+                    exam.weight = oldWeight
+                    localGradesFragment.storeExamListInSharedPreferences()
+                    notifyDataSetChanged()
+                }
+            }
+        }
+
+        holder.editTextGradeCredits.setOnFocusChangeListener { _, hasFocus ->
+            if (!hasFocus) {
+                val oldCredits = holder.editTextGradeCredits.text.toString().toInt()
+                if (exam.credits_new != oldCredits) {
+                    exam.credits_new = oldCredits
+                    localGradesFragment.storeExamListInSharedPreferences()
+                    notifyDataSetChanged()
+                }
+            }
+        }
+        holder.editTextGradeWeights.setText(exam.weight.toString())
+        holder.editTextGradeCredits.setText(exam.credits_new.toString())
+    }
+
+    /**
+     * Adds a ClickListener to reset one exam to the default values and adapts the UI accordingly.
+     */
+    private fun initListenerResetGradeParameters(exam: Exam, holder: ViewHolder) {
+        holder.buttonResetGradeParameters.setOnClickListener(object : View.OnClickListener {
+            override fun onClick(p0: View?) {
+                exam.gradeUsedInAverage = true
+                adaptUIToCheckboxStatus(holder, exam)
+                holder.checkBoxUseGradeForAverage.isChecked = true
+                exam.weight = 1.0
+                exam.credits_new = 6
+                holder.editTextGradeWeights.setText(exam.weight.toString())
+                holder.editTextGradeCredits.setText(exam.credits_new.toString())
+                localGradesFragment.storeExamListInSharedPreferences()
+                notifyDataSetChanged()
+            }
+        })
+    }
+
+    /**
+     * Initializes the state of the checkbox and adapts the UI accordingly.
+     */
+    private fun initCheckBoxUsedInAverage(exam: Exam, holder: ViewHolder) {
+        holder.checkBoxUseGradeForAverage.isChecked = exam.gradeUsedInAverage
+        adaptUIToCheckboxStatus(holder, exam)
+        holder.checkBoxUseGradeForAverage.setOnClickListener() {
+            exam.gradeUsedInAverage = holder.checkBoxUseGradeForAverage.isChecked
+            adaptUIToCheckboxStatus(holder, exam)
+            localGradesFragment.storeExamListInSharedPreferences()
+            notifyDataSetChanged()
+        }
+    }
+
+    /**
+     * Enables/disables Edittexts, and adapts the color of the grade bar on the right side.
+     */
+    private fun adaptUIToCheckboxStatus(
+        holder: ViewHolder,
+        exam: Exam
+    ) {
+        if (exam.gradeUsedInAverage) {
+            holder.editTextGradeCredits.isEnabled = true
+            holder.editTextGradeWeights.isEnabled = true
+            val gradeColor = exam.getGradeColor(context)
+            holder.gradeTextView.background.setTint(gradeColor)
+            holder.gradeTextView.setTextColor(ContextCompat.getColor(context, R.color.white))
+        } else {
+            holder.editTextGradeCredits.isEnabled = false
+            holder.editTextGradeWeights.isEnabled = false
+            holder.gradeTextView.background.setTint(
+                ContextCompat.getColor(
+                    context,
+                    R.color.transparent
+                )
+            )
+            holder.gradeTextView.setTextColor(
+                ContextCompat.getColor(
+                    context,
+                    R.color.grade_default
+                )
+            )
+        }
     }
 
     override fun generateHeaderName(item: Exam): String {
@@ -71,6 +232,16 @@ class ExamListAdapter(context: Context, results: List<Exam>) : SimpleStickyListH
         var gradeTextView: TextView = itemView.findViewById(R.id.gradeTextView)
         var examDateTextView: TextView = itemView.findViewById(R.id.examDateTextView)
         var additionalInfoTextView: TextView = itemView.findViewById(R.id.additionalInfoTextView)
+
+        var editTextGradeWeights: EditText = itemView.findViewById(R.id.editTextGradeWeight)
+        var editTextGradeCredits: EditText = itemView.findViewById(R.id.editTextCreditsOfSubject)
+        var editGradesContainer: LinearLayout = itemView.findViewById(R.id.editGradesContainer)
+        var checkBoxUseGradeForAverage: CheckBox =
+            itemView.findViewById(R.id.checkBoxUseGradeForAverage)
+        val buttonResetGradeParameters: Button =
+            itemView.findViewById(R.id.buttonResetGradeParameters)
+        val gradeTextViewDeleteCustomGrade: ImageView =
+            itemView.findViewById(R.id.gradeTextViewDeleteCustomGrade)
     }
 
     companion object {