Merge pull request #12583 from volzhs/select-multiple-files

Not to be slow when select multiple files

editor/filesystem_dock.cpp

@@ -1454,11 +1454,21 @@ void FileSystemDock::select_file(const String &p_file) {
 
 void FileSystemDock::_file_multi_selected(int p_index, bool p_selected) {
 
-	_file_selected();
+	import_dock_needs_update = true;
+	call_deferred("_update_import_dock");
 }
 
 void FileSystemDock::_file_selected() {
 
+	import_dock_needs_update = true;
+	_update_import_dock();
+}
+
+void FileSystemDock::_update_import_dock() {
+
+	if (!import_dock_needs_update)
+		return;
+
 	//check import
 	Vector<String> imports;
 	String import_type;
@@ -1498,6 +1508,8 @@ void FileSystemDock::_file_selected() {
 	} else {
 		EditorNode::get_singleton()->get_import_dock()->set_edit_multiple_paths(imports);
 	}
+
+	import_dock_needs_update = false;
 }
 
 void FileSystemDock::_bind_methods() {
@@ -1534,6 +1546,7 @@ void FileSystemDock::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("_preview_invalidated"), &FileSystemDock::_preview_invalidated);
 	ClassDB::bind_method(D_METHOD("_file_selected"), &FileSystemDock::_file_selected);
 	ClassDB::bind_method(D_METHOD("_file_multi_selected"), &FileSystemDock::_file_multi_selected);
+	ClassDB::bind_method(D_METHOD("_update_import_dock"), &FileSystemDock::_update_import_dock);
 
 	ADD_SIGNAL(MethodInfo("instance", PropertyInfo(Variant::POOL_STRING_ARRAY, "files")));
 	ADD_SIGNAL(MethodInfo("open"));
@@ -1705,6 +1718,7 @@ FileSystemDock::FileSystemDock(EditorNode *p_editor) {
 
 	updating_tree = false;
 	initialized = false;
+	import_dock_needs_update = false;
 
 	history_pos = 0;
 	history_max_size = 20;

editor/filesystem_dock.h

@@ -147,6 +147,7 @@ private:
 	bool updating_tree;
 	Tree *tree; //directories
 	ItemList *files;
+	bool import_dock_needs_update;
 
 	bool _create_tree(TreeItem *p_parent, EditorFileSystemDirectory *p_dir, Vector<String> &uncollapsed_paths);
 	void _update_tree(bool keep_collapse_state);
@@ -161,6 +162,7 @@ private:
 
 	void _select_file(int p_idx);
 	void _file_multi_selected(int p_index, bool p_selected);
+	void _update_import_dock();
 
 	void _file_selected();
 	void _dir_selected();