add ability to remove variables in variable viewer

classes/deck/deck.gd

@@ -209,6 +209,10 @@ func update_variable(old_name: String, new_name: String, new_value: Variant) ->
 	variable_stack[new_name] = new_value
 
 
+func remove_variable(name: String) -> void:
+	variable_stack.erase(name)
+
+
 ## Group the [param nodes_to_group] into a new deck and return it.
 ## Returns [code]null[/code] on failure.[br]
 ## Adds a group node to this deck, and adds group input and output nodes in the group.

graph_node_renderer/deck_holder_renderer.gd

@@ -120,6 +120,11 @@ func _ready() -> void:
 			get_active_deck().update_variable(old_name, new_name, new_value)
 	)
 	
+	bottom_dock.variable_viewer.top_field_removed.connect(
+		func(field_name: String) -> void:
+			get_active_deck().remove_variable(field_name)
+	)
+
 
 func _on_tab_container_tab_about_to_change(previous_tab: int) -> void:
 	var deck := get_deck_at_tab(previous_tab)

graph_node_renderer/textures/remove-icon.svg

@@ -0,0 +1 @@
+<svg height="16" viewBox="0 0 16 16" width="16" xmlns="http://www.w3.org/2000/svg"><path d="m5 1v1h-4v2h14v-2h-4v-1zm-3 4v8a2 2 0 0 0 2 2h8a2 2 0 0 0 2-2v-8zm1 2h2v6h-2zm4 0h2v6h-2zm4 0h2v6h-2z" fill="#e0e0e0"/></svg>

graph_node_renderer/textures/remove-icon.svg.import

@@ -0,0 +1,37 @@
+[remap]
+
+importer="texture"
+type="CompressedTexture2D"
+uid="uid://cdhco73u4faf8"
+path="res://.godot/imported/remove-icon.svg-39dfaea1590f79f30a4d86a2f83a7c3d.ctex"
+metadata={
+"vram_texture": false
+}
+
+[deps]
+
+source_file="res://graph_node_renderer/textures/remove-icon.svg"
+dest_files=["res://.godot/imported/remove-icon.svg-39dfaea1590f79f30a4d86a2f83a7c3d.ctex"]
+
+[params]
+
+compress/mode=0
+compress/high_quality=false
+compress/lossy_quality=0.7
+compress/hdr_compression=1
+compress/normal_map=0
+compress/channel_pack=0
+mipmaps/generate=false
+mipmaps/limit=-1
+roughness/mode=0
+roughness/src_normal=""
+process/fix_alpha_border=true
+process/premult_alpha=false
+process/normal_map_invert_y=false
+process/hdr_as_srgb=false
+process/hdr_clamp_exposure=false
+process/size_limit=0
+detect_3d/compress_to=1
+svg/scale=1.0
+editor/scale_with_editor_scale=false
+editor/convert_colors_with_editor_theme=false

graph_node_renderer/variable_viewer.gd

@@ -3,13 +3,16 @@
 # GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
 extends VBoxContainer
 class_name VariableViewer
+
+const REMOVE_ICON = preload("res://graph_node_renderer/textures/remove-icon.svg")
+
 @onready var variable_tree: Tree = %VariableTree
 @onready var types_popup: PopupMenu = %TypesPopup
 var root: TreeItem
-
 var _old_name: String
 
 signal top_field_edited(old_name: String, new_name: String, new_value: Variant)
+signal top_field_removed(field_name: String)
 
 
 func _ready() -> void:
@@ -74,7 +77,7 @@ func _ready() -> void:
 				
 				# array
 				if item.get_meta(&"indexed", false):
-					var index := int(new_name)
+					var index := item.get_index()
 					(container as Array)[index] = new_value
 				# dictionary
 				else:
@@ -127,5 +130,34 @@ func add_item(item_name: String, item_value: Variant, parent: TreeItem = root, c
 		for i in (item_value as Array).size():
 			add_item(str(i), item_value[i], item, item_value, true)
 	item.collapsed = true
+	item.add_button(2, REMOVE_ICON)
 
 	return item
+
+
+func _on_variable_tree_button_clicked(item: TreeItem, column: int, id: int, mouse_button_index: int) -> void:
+	if mouse_button_index != MOUSE_BUTTON_LEFT:
+		return
+	
+	if item.get_meta(&"container", -1) is int:
+		var key := item.get_text(0)
+		top_field_removed.emit(key)
+		item.free()
+	else:
+		var container = item.get_meta(&"container")
+		
+		# array
+		if item.get_meta(&"indexed", false):
+			var index := item.get_index()
+			var parent := item.get_parent()
+			(container as Array).remove_at(index)
+			item.free()
+			
+			# go through the array and reset the index strings
+			for i in (container as Array).size():
+				parent.get_child(i).set_text(0, str(i))
+			
+		# dictionary
+		else:
+			(container as Dictionary).erase(item.get_text(0))
+			item.free()

graph_node_renderer/variable_viewer.tscn

@@ -21,8 +21,11 @@ layout_mode = 2
 size_flags_vertical = 3
 columns = 3
 column_titles_visible = true
+allow_rmb_select = true
 allow_search = false
 hide_root = true
 
 [node name="TypesPopup" type="PopupMenu" parent="."]
 unique_name_in_owner = true
+
+[connection signal="button_clicked" from="VariableTree" to="." method="_on_variable_tree_button_clicked"]