Added "allow_reselect" property to ItemList and enabled it for the method/help lists.

doc/classes/ItemList.xml

@@ -308,7 +308,11 @@
 		</method>
 	</methods>
 	<members>
+		<member name="allow_reselect" type="bool" setter="set_allow_reselect" getter="get_allow_reselect">
+			If [code]true[/code] the currently selected item may be selected again.
+		</member>
 		<member name="allow_rmb_select" type="bool" setter="set_allow_rmb_select" getter="get_allow_rmb_select">
+			If [code]true[/code] a right mouse button click can select items.
 		</member>
 		<member name="auto_height" type="bool" setter="set_auto_height" getter="has_auto_height">
 		</member>
@@ -327,6 +331,7 @@
 		<member name="same_column_width" type="bool" setter="set_same_column_width" getter="is_same_column_width">
 		</member>
 		<member name="select_mode" type="int" setter="set_select_mode" getter="get_select_mode" enum="ItemList.SelectMode">
+			Allow single or multiple selection. See the [code]SELECT_*[/code] constants.
 		</member>
 	</members>
 	<signals>

editor/plugins/script_editor_plugin.cpp

@@ -148,8 +148,6 @@ public:
 	}
 };
 
-#define SORT_SCRIPT_LIST
-
 void ScriptEditorQuickOpen::popup(const Vector<String> &p_functions, bool p_dontclear) {
 
 	popup_centered_ratio(0.6);
@@ -2608,11 +2606,13 @@ ScriptEditor::ScriptEditor(EditorNode *p_editor) {
 
 	members_overview = memnew(ItemList);
 	list_split->add_child(members_overview);
+	members_overview->set_allow_reselect(true);
 	members_overview->set_custom_minimum_size(Size2(0, 90)); //need to give a bit of limit to avoid it from disappearing
 	members_overview->set_v_size_flags(SIZE_EXPAND_FILL);
 
 	help_overview = memnew(ItemList);
 	list_split->add_child(help_overview);
+	help_overview->set_allow_reselect(true);
 	help_overview->set_custom_minimum_size(Size2(0, 90)); //need to give a bit of limit to avoid it from disappearing
 	help_overview->set_v_size_flags(SIZE_EXPAND_FILL);
 

scene/gui/item_list.cpp

@@ -517,11 +517,11 @@ void ItemList::_gui_input(const Ref<InputEvent> &p_event) {
 
 					emit_signal("item_rmb_selected", i, get_local_mouse_position());
 				} else {
-					bool selected = !items[i].selected;
+					bool selected = items[i].selected;
 
 					select(i, select_mode == SELECT_SINGLE || !mb->get_command());
 
-					if (selected) {
+					if (!selected || allow_reselect) {
 						if (select_mode == SELECT_SINGLE) {
 							emit_signal("item_selected", i);
 						} else
@@ -1241,6 +1241,7 @@ int ItemList::find_metadata(const Variant &p_metadata) const {
 }
 
 void ItemList::set_allow_rmb_select(bool p_allow) {
+
 	allow_rmb_select = p_allow;
 }
 
@@ -1249,6 +1250,16 @@ bool ItemList::get_allow_rmb_select() const {
 	return allow_rmb_select;
 }
 
+void ItemList::set_allow_reselect(bool p_allow) {
+
+	allow_reselect = p_allow;
+}
+
+bool ItemList::get_allow_reselect() const {
+
+	return allow_reselect;
+}
+
 void ItemList::set_icon_scale(real_t p_scale) {
 	icon_scale = p_scale;
 }
@@ -1404,6 +1415,9 @@ void ItemList::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("set_allow_rmb_select", "allow"), &ItemList::set_allow_rmb_select);
 	ClassDB::bind_method(D_METHOD("get_allow_rmb_select"), &ItemList::get_allow_rmb_select);
 
+	ClassDB::bind_method(D_METHOD("set_allow_reselect", "allow"), &ItemList::set_allow_reselect);
+	ClassDB::bind_method(D_METHOD("get_allow_reselect"), &ItemList::get_allow_reselect);
+
 	ClassDB::bind_method(D_METHOD("set_auto_height", "enable"), &ItemList::set_auto_height);
 	ClassDB::bind_method(D_METHOD("has_auto_height"), &ItemList::has_auto_height);
 
@@ -1422,6 +1436,7 @@ void ItemList::_bind_methods() {
 	ADD_PROPERTY(PropertyInfo(Variant::ARRAY, "items", PROPERTY_HINT_NONE, "", PROPERTY_USAGE_NOEDITOR | PROPERTY_USAGE_INTERNAL), "_set_items", "_get_items");
 
 	ADD_PROPERTY(PropertyInfo(Variant::INT, "select_mode", PROPERTY_HINT_ENUM, "Single,Multi"), "set_select_mode", "get_select_mode");
+	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "allow_reselect"), "set_allow_reselect", "get_allow_reselect");
 	ADD_PROPERTYNZ(PropertyInfo(Variant::BOOL, "allow_rmb_select"), "set_allow_rmb_select", "get_allow_rmb_select");
 	ADD_PROPERTYNO(PropertyInfo(Variant::INT, "max_text_lines"), "set_max_text_lines", "get_max_text_lines");
 	ADD_PROPERTYNZ(PropertyInfo(Variant::BOOL, "auto_height"), "set_auto_height", "has_auto_height");
@@ -1476,6 +1491,7 @@ ItemList::ItemList() {
 	ensure_selected_visible = false;
 	defer_select_single = -1;
 	allow_rmb_select = false;
+	allow_reselect = false;
 	do_autoscroll_to_bottom = false;
 
 	icon_scale = 1.0f;

scene/gui/item_list.h

@@ -106,6 +106,8 @@ private:
 
 	bool allow_rmb_select;
 
+	bool allow_reselect;
+
 	real_t icon_scale;
 
 	bool do_autoscroll_to_bottom;
@@ -198,6 +200,9 @@ public:
 	void set_allow_rmb_select(bool p_allow);
 	bool get_allow_rmb_select() const;
 
+	void set_allow_reselect(bool p_allow);
+	bool get_allow_reselect() const;
+
 	void ensure_current_is_visible();
 
 	void sort_items_by_text();