[fenix] For https://github.com/mozilla-mobile/fenix/issues/16416: Remove save to collection button from tab a11y list.

app/src/main/java/org/mozilla/fenix/ext/View.kt

@@ -8,6 +8,7 @@ import android.graphics.Rect
 import android.os.Build
 import android.view.TouchDelegate
 import android.view.View
+import android.view.accessibility.AccessibilityNodeInfo
 import androidx.annotation.Dimension
 import androidx.annotation.Dimension.DP
 import androidx.annotation.VisibleForTesting
@@ -33,6 +34,38 @@ fun View.removeTouchDelegate() {
     }
 }
 
+/**
+ * Removes a child view from accessibility node info of an accessibility parent view.
+ * If the child does not exist in the node, calling this has no effect.
+ */
+fun View.removeChildFromAccessibilityNodeInfo(child: View) {
+    this.accessibilityDelegate = object : View.AccessibilityDelegate() {
+        override fun onInitializeAccessibilityNodeInfo(
+            host: View?,
+            info: AccessibilityNodeInfo?
+        ) {
+            super.onInitializeAccessibilityNodeInfo(host, info)
+            info?.removeChild(child)
+        }
+    }
+}
+
+/**
+ * Add a child view to the accessibility node info of a view that becomes it's accessibility parent.
+ * If the child already exists in the node, calling this has no effect.
+ */
+fun View.addChildToAccessibilityNodeInfo(child: View) {
+    this.accessibilityDelegate = object : View.AccessibilityDelegate() {
+        override fun onInitializeAccessibilityNodeInfo(
+            host: View?,
+            info: AccessibilityNodeInfo?
+        ) {
+            super.onInitializeAccessibilityNodeInfo(host, info)
+            info?.addChild(child)
+        }
+    }
+}
+
 /**
  * Fills a [Rect] with data about a view's location in the screen.
  *

app/src/main/java/org/mozilla/fenix/tabtray/SaveToCollectionsButtonAdapter.kt

@@ -7,11 +7,14 @@ package org.mozilla.fenix.tabtray
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
+import android.view.accessibility.AccessibilityNodeInfo
 import androidx.core.view.isVisible
 import androidx.recyclerview.widget.DiffUtil
 import androidx.recyclerview.widget.ListAdapter
 import androidx.recyclerview.widget.RecyclerView
 import org.mozilla.fenix.R
+import org.mozilla.fenix.ext.addChildToAccessibilityNodeInfo
+import org.mozilla.fenix.ext.removeChildFromAccessibilityNodeInfo
 import org.mozilla.fenix.tabtray.SaveToCollectionsButtonAdapter.Item
 import org.mozilla.fenix.tabtray.SaveToCollectionsButtonAdapter.ViewHolder
 
@@ -34,6 +37,21 @@ class SaveToCollectionsButtonAdapter(
     }
 
     override fun onBindViewHolder(holder: ViewHolder, position: Int, payloads: MutableList<Any>) {
+        // remove button from node info of tabs list for a11y services,and add it to the tab tray node
+        holder.itemView.accessibilityDelegate = object : View.AccessibilityDelegate() {
+            override fun onInitializeAccessibilityNodeInfo(
+                host: View?,
+                info: AccessibilityNodeInfo?
+            ) {
+                super.onInitializeAccessibilityNodeInfo(host, info)
+                info?.collectionItemInfo = null
+                (holder.itemView.parentForAccessibility as View).apply {
+                    removeChildFromAccessibilityNodeInfo(holder.itemView)
+                    (this.parentForAccessibility as View).addChildToAccessibilityNodeInfo(holder.itemView)
+                }
+            }
+        }
+
         if (payloads.isNullOrEmpty()) {
             onBindViewHolder(holder, position)
             return

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

@@ -18,7 +18,6 @@ A FrameLayout here is an efficient way of having a views stack while allowing:
     android:layout_height="202dp"
     android:clipChildren="false"
     android:clipToPadding="false"
-    android:importantForAccessibility="no"
     android:padding="8dp">
 
     <com.google.android.material.card.MaterialCardView