fix icon text text watchers being set several times resulting in multiple calls

Author: Razeeman

core/src/main/java/com/example/util/simpletimetracker/core/delegates/iconSelection/viewDelegate/IconSelectionViewDelegate.kt

@@ -3,6 +3,7 @@ package com.example.util.simpletimetracker.core.delegates.iconSelection.viewDele
 import android.content.Context
 import android.content.res.ColorStateList
 import android.content.res.Resources
+import android.text.TextWatcher
 import androidx.core.view.isVisible
 import androidx.core.view.updatePadding
 import androidx.core.widget.doAfterTextChanged
@@ -90,11 +91,20 @@ object IconSelectionViewDelegate {
         )
     }
 
+    fun onDestroyView(
+        textWatcher: TextWatcher?,
+        layout: IconSelectionLayoutBinding,
+    ) = with(layout) {
+        // Remove textWatcher because it will be set again on init ViewModel,
+        // to avoid several watcher being set on screen navigation forward and backward.
+        textWatcher?.let(etIconSelectionText::removeTextChangedListener)
+    }
+
     fun updateUi(
         icon: RecordTypeIcon?,
         viewModel: IconSelectionViewModelDelegate,
         layout: IconSelectionLayoutBinding,
-    ) = with(layout) {
+    ): TextWatcher = with(layout) {
         (icon as? RecordTypeIcon.Text)?.text?.let {
             etIconSelectionText.setText(it)
         }

features/feature_change_record_tag/src/main/java/com/example/util/simpletimetracker/feature_change_record_tag/view/ChangeRecordTagFragment.kt

@@ -2,6 +2,7 @@ package com.example.util.simpletimetracker.feature_change_record_tag.view
 
 import android.animation.ValueAnimator
 import android.os.Bundle
+import android.text.TextWatcher
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
@@ -122,8 +123,9 @@ class ChangeRecordTagFragment :
             createHintBigAdapterDelegate(),
         )
     }
-    private var typeColorAnimator: ValueAnimator? = null
     private var iconsLayoutManager: GridLayoutManager? = null
+    private var typeColorAnimator: ValueAnimator? = null
+    private var iconTextWatcher: TextWatcher? = null
 
     private val params: ChangeTagData by fragmentArgumentDelegate(
         key = ARGS_PARAMS, default = ChangeTagData.New(),
@@ -220,6 +222,14 @@ class ChangeRecordTagFragment :
         }
     }
 
+    override fun onDestroyView() {
+        IconSelectionViewDelegate.onDestroyView(
+            textWatcher = iconTextWatcher,
+            layout = binding.containerChangeRecordTypeIcon,
+        )
+        super.onDestroyView()
+    }
+
     override fun onDestroy() {
         typeColorAnimator?.cancel()
         super.onDestroy()
@@ -240,7 +250,7 @@ class ChangeRecordTagFragment :
     private fun updateUi(item: CategoryViewData.Record) = with(binding) {
         etChangeRecordTagName.setText(item.name)
         etChangeRecordTagName.setSelection(item.name.length)
-        IconSelectionViewDelegate.updateUi(
+        iconTextWatcher = IconSelectionViewDelegate.updateUi(
             icon = item.icon,
             viewModel = viewModel,
             layout = containerChangeRecordTypeIcon,

features/feature_change_record_type/src/main/java/com/example/util/simpletimetracker/feature_change_record_type/view/ChangeRecordTypeFragment.kt

@@ -2,6 +2,7 @@ package com.example.util.simpletimetracker.feature_change_record_type.view
 
 import android.animation.ValueAnimator
 import android.os.Bundle
+import android.text.TextWatcher
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
@@ -128,6 +129,7 @@ class ChangeRecordTypeFragment :
     }
     private var iconsLayoutManager: GridLayoutManager? = null
     private var typeColorAnimator: ValueAnimator? = null
+    private var iconTextWatcher: TextWatcher? = null
 
     private val params: ChangeRecordTypeParams by fragmentArgumentDelegate(
         key = ARGS_PARAMS,
@@ -243,6 +245,14 @@ class ChangeRecordTypeFragment :
         GoalsViewDelegate.onResume(binding.layoutChangeRecordTypeGoals)
     }
 
+    override fun onDestroyView() {
+        IconSelectionViewDelegate.onDestroyView(
+            textWatcher = iconTextWatcher,
+            layout = binding.containerChangeRecordTypeIcon,
+        )
+        super.onDestroyView()
+    }
+
     override fun onDestroy() {
         typeColorAnimator?.cancel()
         super.onDestroy()
@@ -271,7 +281,7 @@ class ChangeRecordTypeFragment :
     private fun updateUi(item: RecordTypeViewData) = with(binding) {
         etChangeRecordTypeName.setText(item.name)
         etChangeRecordTypeName.setSelection(item.name.length)
-        IconSelectionViewDelegate.updateUi(
+        iconTextWatcher = IconSelectionViewDelegate.updateUi(
             icon = item.iconId,
             viewModel = viewModel,
             layout = containerChangeRecordTypeIcon,