Make node bounds mandatory in protocol

Summary: This makes life on the desktop easier as 99% of the time bounds were there but we were dealing with non sensical non null branches.

Reviewed By: lblasa

Differential Revision: D41218325

fbshipit-source-id: e490d3775720c1c55dcb8f4a2a85520294f5e2a9

android/src/main/java/com/facebook/flipper/plugins/uidebugger/descriptors/ChainedDescriptor.kt

@@ -67,8 +67,9 @@ abstract class ChainedDescriptor<T> : NodeDescriptor<T> {
 
   abstract fun onGetName(node: T): String
 
-  final override fun getBounds(node: T): Bounds? {
-    return onGetBounds(node) ?: mSuper?.getBounds(node)
+  final override fun getBounds(node: T): Bounds {
+    val bounds = onGetBounds(node) ?: mSuper?.getBounds(node)
+    return bounds ?: Bounds(0, 0, 0, 0)
   }
 
   open fun onGetBounds(node: T): Bounds? = null

android/src/main/java/com/facebook/flipper/plugins/uidebugger/descriptors/NodeDescriptor.kt

@@ -34,7 +34,7 @@ object BaseTags {
 interface NodeDescriptor<T> {
 
   /** Should be w.r.t the direct parent */
-  fun getBounds(node: T): Bounds?
+  fun getBounds(node: T): Bounds
 
   /**
    * The name used to identify this node in the inspector. Does not need to be unique. A good

android/src/main/java/com/facebook/flipper/plugins/uidebugger/descriptors/ObjectDescriptor.kt

@@ -28,7 +28,7 @@ object ObjectDescriptor : NodeDescriptor<Any> {
 
   override fun getData(node: Any) = mutableMapOf<MetadataId, InspectableObject>()
 
-  override fun getBounds(node: Any): Bounds? = null
+  override fun getBounds(node: Any): Bounds = Bounds(0, 0, 0, 0)
 
   override fun getTags(node: Any): Set<String> = setOf(BaseTags.Unknown)
 

android/src/main/java/com/facebook/flipper/plugins/uidebugger/descriptors/OffsetChildDescriptor.kt

@@ -21,12 +21,9 @@ class OffsetChild(val child: Any, val descriptor: NodeDescriptor<Any>, val x: In
 
 object OffsetChildDescriptor : NodeDescriptor<OffsetChild> {
 
-  override fun getBounds(node: OffsetChild): Bounds? {
+  override fun getBounds(node: OffsetChild): Bounds {
     val bounds = node.descriptor.getBounds(node.child)
-    bounds?.let { b ->
-      return Bounds(node.x, node.y, b.width, b.height)
-    }
-    return null
+    return Bounds(node.x, node.y, bounds.width, bounds.height)
   }
 
   override fun getName(node: OffsetChild): String = node.descriptor.getName(node.child)

android/src/main/java/com/facebook/flipper/plugins/uidebugger/model/Node.kt

@@ -15,7 +15,7 @@ data class Node(
     val qualifiedName: String,
     val name: String,
     val attributes: Map<MetadataId, InspectableObject>,
-    val bounds: Bounds?,
+    val bounds: Bounds,
     val tags: Set<String>,
     val children: List<Id>,
     val activeChild: Id?,

android/src/main/java/com/facebook/flipper/plugins/uidebugger/traversal/PartialLayoutTraversal.kt

@@ -59,7 +59,7 @@ class PartialLayoutTraversal(
                   descriptor.getQualifiedName(node),
                   descriptor.getName(node),
                   emptyMap(),
-                  null,
+                  descriptor.getBounds(node),
                   emptySet(),
                   emptyList(),
                   null))