adding a drag handler at checklist items

Author: tibbi

app/build.gradle

@@ -51,7 +51,8 @@ android {
 }
 
 dependencies {
-    implementation 'com.simplemobiletools:commons:5.20.7'
+    implementation 'com.simplemobiletools:commons:5.20.9'
+    implementation 'androidx.constraintlayout:constraintlayout:2.0.0-beta2'
 
     kapt 'androidx.room:room-compiler:2.2.2'
     implementation 'androidx.room:room-runtime:2.2.2'

app/src/main/kotlin/com/simplemobiletools/notes/pro/adapters/ChecklistAdapter.kt

@@ -8,6 +8,7 @@ import android.view.View
 import android.view.ViewGroup
 import com.simplemobiletools.commons.activities.BaseSimpleActivity
 import com.simplemobiletools.commons.adapters.MyRecyclerViewAdapter
+import com.simplemobiletools.commons.extensions.applyColorFilter
 import com.simplemobiletools.commons.extensions.beVisibleIf
 import com.simplemobiletools.commons.extensions.getColoredDrawableWithColor
 import com.simplemobiletools.commons.views.MyRecyclerView
@@ -21,7 +22,8 @@ import kotlinx.android.synthetic.main.item_checklist.view.*
 import java.util.*
 
 class ChecklistAdapter(activity: BaseSimpleActivity, var items: ArrayList<ChecklistItem>, val listener: ChecklistItemsListener?,
-                       recyclerView: MyRecyclerView, val showIcons: Boolean, itemClick: (Any) -> Unit) : MyRecyclerViewAdapter(activity, recyclerView, null, itemClick) {
+                       recyclerView: MyRecyclerView, val showIcons: Boolean, itemClick: (Any) -> Unit) :
+        MyRecyclerViewAdapter(activity, recyclerView, null, itemClick) {
 
     private lateinit var crossDrawable: Drawable
     private lateinit var checkDrawable: Drawable
@@ -52,6 +54,14 @@ class ChecklistAdapter(activity: BaseSimpleActivity, var items: ArrayList<Checkl
 
     override fun getItemKeyPosition(key: Int) = items.indexOfFirst { it.id == key }
 
+    override fun onActionModeCreated() {
+        notifyDataSetChanged()
+    }
+
+    override fun onActionModeDestroyed() {
+        notifyDataSetChanged()
+    }
+
     override fun prepareActionMode(menu: Menu) {
         val selectedItems = getSelectedItems()
         if (selectedItems.isEmpty()) {
@@ -139,6 +149,9 @@ class ChecklistAdapter(activity: BaseSimpleActivity, var items: ArrayList<Checkl
 
             checklist_image.setImageDrawable(if (checklistItem.isDone) checkDrawable else crossDrawable)
             checklist_image.beVisibleIf(showIcons)
+
+            checklist_drag_handle.beVisibleIf(selectedKeys.isNotEmpty())
+            checklist_drag_handle.applyColorFilter(textColor)
             checklist_holder.isSelected = isSelected
         }
     }

app/src/main/res/layout/item_checklist.xml

@@ -1,6 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
-<RelativeLayout
+<androidx.constraintlayout.widget.ConstraintLayout
     xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
     xmlns:tools="http://schemas.android.com/tools"
     android:id="@+id/checklist_holder"
     android:layout_width="match_parent"
@@ -14,22 +15,32 @@
         android:id="@+id/checklist_title"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
-        android:layout_centerVertical="true"
-        android:layout_marginLeft="@dimen/medium_margin"
-        android:layout_marginTop="@dimen/medium_margin"
-        android:layout_marginRight="@dimen/medium_margin"
-        android:layout_toStartOf="@+id/checklist_image"
         android:paddingStart="@dimen/activity_margin"
         android:textSize="@dimen/bigger_text_size"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toStartOf="@+id/checklist_image"
+        app:layout_constraintTop_toTopOf="parent"
         tools:text="Butter" />
 
     <ImageView
         android:id="@+id/checklist_image"
         android:layout_width="@dimen/checklist_image_size"
         android:layout_height="@dimen/checklist_image_size"
-        android:layout_alignParentEnd="true"
-        android:layout_centerVertical="true"
         android:padding="@dimen/normal_margin"
-        android:src="@drawable/ic_cross_vector" />
+        android:src="@drawable/ic_cross_vector"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toStartOf="@+id/checklist_drag_handle"
+        app:layout_constraintTop_toTopOf="parent" />
 
-</RelativeLayout>
+    <ImageView
+        android:id="@+id/checklist_drag_handle"
+        android:layout_width="@dimen/checklist_image_size"
+        android:layout_height="@dimen/checklist_image_size"
+        android:padding="@dimen/normal_margin"
+        android:src="@drawable/ic_drag_handle_vector"
+        android:visibility="gone"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+
+</androidx.constraintlayout.widget.ConstraintLayout>