Made the remove frame button get disabled when there's only one frame

Assets/Graphics/dark_themes/timeline/remove_frame_disabled.png.import

@@ -0,0 +1,34 @@
+[remap]
+
+importer="texture"
+type="StreamTexture"
+path="res://.import/remove_frame_disabled.png-0b0bf95063e120cabfe225b5e96232e6.stex"
+metadata={
+"vram_texture": false
+}
+
+[deps]
+
+source_file="res://Assets/Graphics/dark_themes/timeline/remove_frame_disabled.png"
+dest_files=[ "res://.import/remove_frame_disabled.png-0b0bf95063e120cabfe225b5e96232e6.stex" ]
+
+[params]
+
+compress/mode=0
+compress/lossy_quality=0.7
+compress/hdr_mode=0
+compress/bptc_ldr=0
+compress/normal_map=0
+flags/repeat=0
+flags/filter=false
+flags/mipmaps=false
+flags/anisotropic=false
+flags/srgb=2
+process/fix_alpha_border=true
+process/premult_alpha=false
+process/HDR_as_SRGB=false
+process/invert_color=false
+stream=false
+size_limit=0
+detect_3d=true
+svg/scale=1.0

Assets/Graphics/light_themes/timeline/remove_frame_disabled.png.import

@@ -0,0 +1,34 @@
+[remap]
+
+importer="texture"
+type="StreamTexture"
+path="res://.import/remove_frame_disabled.png-788471f1b29606174c549e45209f03ca.stex"
+metadata={
+"vram_texture": false
+}
+
+[deps]
+
+source_file="res://Assets/Graphics/light_themes/timeline/remove_frame_disabled.png"
+dest_files=[ "res://.import/remove_frame_disabled.png-788471f1b29606174c549e45209f03ca.stex" ]
+
+[params]
+
+compress/mode=0
+compress/lossy_quality=0.7
+compress/hdr_mode=0
+compress/bptc_ldr=0
+compress/normal_map=0
+flags/repeat=0
+flags/filter=false
+flags/mipmaps=false
+flags/anisotropic=false
+flags/srgb=2
+process/fix_alpha_border=true
+process/premult_alpha=false
+process/HDR_as_SRGB=false
+process/invert_color=false
+stream=false
+size_limit=0
+detect_3d=true
+svg/scale=1.0

src/Autoload/Global.gd

@@ -243,6 +243,8 @@ var frames_container : VBoxContainer
 var tag_container : Control
 var tag_dialog : AcceptDialog
 
+var remove_frame_button : BaseButton
+
 var remove_layer_button : BaseButton
 var move_up_layer_button : BaseButton
 var move_down_layer_button : BaseButton
@@ -374,6 +376,8 @@ func _ready() -> void:
 	tag_container = find_node_by_name(animation_timeline, "TagContainer")
 	tag_dialog = find_node_by_name(animation_timeline, "FrameTagDialog")
 
+	remove_frame_button = find_node_by_name(animation_timeline, "DeleteFrame")
+
 	remove_layer_button = find_node_by_name(animation_timeline, "RemoveLayer")
 	move_up_layer_button = find_node_by_name(animation_timeline, "MoveUpLayer")
 	move_down_layer_button = find_node_by_name(animation_timeline, "MoveDownLayer")
@@ -640,6 +644,11 @@ func frame_changed(value : int) -> void:
 	if current_frame < layers[current_layer][3].get_child_count():
 		layers[current_layer][3].get_child(current_frame).pressed = true
 
+	if canvases.size() == 1:
+		disable_button(remove_frame_button, true)
+	elif !layers[current_layer][2]:
+		disable_button(remove_frame_button, false)
+
 	Global.transparent_checker._ready() # To update the rect size