Created dummyBtn which holds the ButtonGrp (#329)

* Created dummyBtn which holds the ButtonGrp

Also added the swatch Buttons to the same group.

* Bug Fixes

Also Updated the EditPalettePopup since it uses the PaletteButtons.

src/Palette/EditPalettePopup.gd

@@ -12,6 +12,7 @@ onready var color_name_edit = $VBoxContainer/PaletteOptions/EditPaletteColorName
 onready var palette_name_edit = $VBoxContainer/PaletteOptions/EditPaletteNameLineEdit
 onready var left_color_button = $VBoxContainer/HBoxContainer/VBoxContainer/CenterContainer/HBoxContainer/LeftColor/NinePatchRect
 onready var right_color_button = $VBoxContainer/HBoxContainer/VBoxContainer/CenterContainer/HBoxContainer/RightColor/NinePatchRect
+onready var dummyBtn = $DummyBtn
 
 
 func _ready() -> void:
@@ -46,6 +47,7 @@ func _display_palette() -> void:
 		new_button.index = index
 		new_button.connect("on_drop_data", self, "on_move_swatch")
 		new_button.connect("pressed", self, "on_swatch_select", [new_button])
+		new_button.group = dummyBtn.group
 
 		palette_grid.add_child(new_button)
 		index += 1
@@ -56,7 +58,7 @@ func _display_palette() -> void:
 
 func _clear_swatches() -> void:
 	for child in palette_grid.get_children():
-		if child is BaseButton:
+		if child is BaseButton and child.text != "Dummy":
 			child.disconnect("on_drop_data", self, "on_move_swatch")
 			child.queue_free()
 
@@ -90,6 +92,7 @@ func _on_AddSwatchButton_pressed() -> void:
 	new_button.index = index
 	new_button.connect("on_drop_data", self, "on_move_swatch")
 	new_button.connect("pressed", self, "on_swatch_select", [new_button])
+	new_button.group = dummyBtn.group
 
 	palette_grid.add_child(new_button)
 	on_swatch_select(new_button)

src/Palette/EditPalettePopup.tscn

@@ -1,10 +1,12 @@
-[gd_scene load_steps=5 format=2]
+[gd_scene load_steps=6 format=2]
 
 [ext_resource path="res://src/Palette/EditPalettePopup.gd" type="Script" id=1]
 [ext_resource path="res://assets/graphics/dark_themes/timeline/new_frame.png" type="Texture" id=2]
 [ext_resource path="res://assets/graphics/dark_themes/timeline/remove_frame.png" type="Texture" id=3]
 [ext_resource path="res://assets/graphics/palette/palette_button_fill.png" type="Texture" id=6]
 
+[sub_resource type="ButtonGroup" id=1]
+
 [node name="EditPalettePopup" type="WindowDialog"]
 margin_right = 600.0
 margin_bottom = 550.0
@@ -228,6 +230,15 @@ margin_left = 423.0
 margin_right = 580.0
 margin_bottom = 20.0
 size_flags_horizontal = 3
+
+[node name="DummyBtn" type="Button" parent="."]
+visible = false
+margin_left = 322.0
+margin_top = 10.0
+margin_right = 385.0
+margin_bottom = 30.0
+group = SubResource( 1 )
+text = "Dummy"
 [connection signal="popup_hide" from="." to="." method="_on_EditPalettePopup_popup_hide"]
 [connection signal="color_changed" from="VBoxContainer/HBoxContainer/EditPaletteColorPicker" to="." method="_on_EditPaletteColorPicker_color_changed"]
 [connection signal="pressed" from="VBoxContainer/HBoxContainer/VBoxContainer/CenterContainer/HBoxContainer/LeftColor" to="." method="_on_LeftColor_pressed"]

src/Palette/PaletteButton.tscn

@@ -7,9 +7,6 @@
 [ext_resource path="res://assets/themes/palette_styleboxes/palette_stylebox_normal.tres" type="StyleBox" id=5]
 [ext_resource path="res://assets/graphics/palette/palette_button_fill.png" type="Texture" id=6]
 
-
-
-
 [sub_resource type="ImageTexture" id=1]
 
 [node name="PaletteButton" type="Button"]
@@ -22,6 +19,7 @@ custom_styles/hover = ExtResource( 2 )
 custom_styles/pressed = ExtResource( 1 )
 custom_styles/focus = ExtResource( 4 )
 custom_styles/normal = ExtResource( 5 )
+toggle_mode = true
 action_mode = 0
 button_mask = 3
 icon = SubResource( 1 )

src/Palette/PaletteContainer.gd

@@ -18,7 +18,7 @@ func _ready() -> void:
 
 func _clear_swatches() -> void:
 	for child in get_children():
-		if child is BaseButton:
+		if child is BaseButton and child.text != "Dummy":
 			child.disconnect("pressed", self, "on_color_select")
 			child.queue_free()
 
@@ -218,6 +218,7 @@ func _display_palette(palette : Palette) -> void:
 		new_button.get_child(0).modulate = color
 		new_button.hint_tooltip = "#" + color_data.data.to_upper() + " " + color_data.name
 		new_button.connect("pressed", self, "on_color_select", [index])
+		new_button.group = $DummyBtn.group
 
 		add_child(new_button)
 		index += 1

src/Palette/PalettePanelContainer.tscn

@@ -1,4 +1,4 @@
-[gd_scene load_steps=8 format=2]
+[gd_scene load_steps=9 format=2]
 
 [ext_resource path="res://src/Palette/PaletteContainer.gd" type="Script" id=1]
 [ext_resource path="res://assets/graphics/dark_themes/palette/edit_palette.png" type="Texture" id=2]
@@ -8,6 +8,8 @@
 [ext_resource path="res://src/Palette/NewPaletteDialog.tscn" type="PackedScene" id=6]
 [ext_resource path="res://src/Palette/EditPalettePopup.tscn" type="PackedScene" id=7]
 
+[sub_resource type="ButtonGroup" id=1]
+
 [node name="PalettePanelContainer" type="PanelContainer"]
 margin_left = 15.0
 margin_top = 261.0
@@ -160,6 +162,13 @@ size_flags_horizontal = 3
 columns = 10
 script = ExtResource( 1 )
 
+[node name="DummyBtn" type="Button" parent="PaletteVBoxContainer/ScrollPalette/CenterPalette/PaletteContainer"]
+visible = false
+margin_right = 12.0
+margin_bottom = 20.0
+group = SubResource( 1 )
+text = "Dummy"
+
 [node name="NewPaletteDialog" parent="." instance=ExtResource( 6 )]
 margin_left = 7.0
 margin_top = 7.0
@@ -175,6 +184,8 @@ margin_left = 7.0
 margin_top = 7.0
 margin_right = 507.0
 margin_bottom = 307.0
+current_dir = "/home/luiq/data/libDev/git/Pixelorama"
+current_path = "/home/luiq/data/libDev/git/Pixelorama/"
 
 [node name="EditPalettePopup" parent="." instance=ExtResource( 7 )]
 margin_left = 7.0