From f7e152b0010d77445df56f8f28096dad4bc7d704 Mon Sep 17 00:00:00 2001
From: kobewi <kobewi4e@gmail.com>
Date: Sun, 13 Dec 2020 23:41:38 +0100
Subject: [PATCH] Add Delete All button to ItemList editor

---
 editor/plugins/item_list_editor_plugin.cpp | 12 ++++++++++++
 editor/plugins/item_list_editor_plugin.h   |  2 ++
 2 files changed, 14 insertions(+)

diff --git a/editor/plugins/item_list_editor_plugin.cpp b/editor/plugins/item_list_editor_plugin.cpp
index 3207a989bd2..16cafda8997 100644
--- a/editor/plugins/item_list_editor_plugin.cpp
+++ b/editor/plugins/item_list_editor_plugin.cpp
@@ -244,6 +244,7 @@ void ItemListEditor::_node_removed(Node *p_node) {
 void ItemListEditor::_notification(int p_notification) {
 	if (p_notification == NOTIFICATION_ENTER_TREE || p_notification == NOTIFICATION_THEME_CHANGED) {
 		add_button->set_icon(get_theme_icon(SNAME("Add"), SNAME("EditorIcons")));
+		clear_button->set_icon(get_theme_icon(SNAME("Remove"), SNAME("EditorIcons")));
 		del_button->set_icon(get_theme_icon(SNAME("Remove"), SNAME("EditorIcons")));
 	} else if (p_notification == NOTIFICATION_READY) {
 		get_tree()->connect("node_removed", callable_mp(this, &ItemListEditor::_node_removed));
@@ -258,6 +259,12 @@ void ItemListEditor::_add_pressed() {
 	item_plugins[selected_idx]->add_item();
 }
 
+void ItemListEditor::_clear_pressed() {
+	for (int i = item_plugins[selected_idx]->get_item_count() - 1; i >= 0; i--) {
+		item_plugins[selected_idx]->erase(i);
+	}
+}
+
 void ItemListEditor::_delete_pressed() {
 	if (selected_idx == -1) {
 		return;
@@ -350,6 +357,11 @@ ItemListEditor::ItemListEditor() {
 
 	hbc->add_spacer();
 
+	clear_button = memnew(Button);
+	clear_button->set_text(TTR("Delete All"));
+	hbc->add_child(clear_button);
+	clear_button->connect("pressed", callable_mp(this, &ItemListEditor::_clear_pressed));
+
 	del_button = memnew(Button);
 	del_button->set_text(TTR("Delete"));
 	hbc->add_child(del_button);
diff --git a/editor/plugins/item_list_editor_plugin.h b/editor/plugins/item_list_editor_plugin.h
index 8c77f3d9521..8f61aef0833 100644
--- a/editor/plugins/item_list_editor_plugin.h
+++ b/editor/plugins/item_list_editor_plugin.h
@@ -204,6 +204,7 @@ class ItemListEditor : public HBoxContainer {
 	Tree *tree;
 	Button *add_button;
 	Button *del_button;
+	Button *clear_button;
 
 	int selected_idx;
 
@@ -213,6 +214,7 @@ class ItemListEditor : public HBoxContainer {
 
 	void _add_pressed();
 	void _delete_pressed();
+	void _clear_pressed();
 
 	void _node_removed(Node *p_node);