Fixed validation error with export preset names

Author: MiracleAig

editor/export/editor_export.cpp

@@ -156,6 +156,19 @@ int EditorExport::get_export_platform_index_by_name(const String &p_name) {
 	return -1;
 }
 
+bool EditorExport::has_preset_with_name(const String &p_name, int p_exclude_index) const {
+	for (int i = 0; i < export_presets.size(); i++) {
+		if (i == p_exclude_index) {
+			continue;
+		}
+		if (export_presets[i]->get_name() == p_name) {
+			return true;
+		}
+	}
+
+	return false;
+}
+
 Ref<EditorExportPlatform> EditorExport::get_export_platform(int p_idx) {
 	ERR_FAIL_INDEX_V(p_idx, export_platforms.size(), Ref<EditorExportPlatform>());
 

editor/export/editor_export.h

@@ -88,6 +88,7 @@ class EditorExport : public Node {
 	void load_config();
 	void update_export_presets();
 	bool poll_export_platforms();
+	bool has_preset_with_name(const String &p_name, int p_exclude_index = -1) const;
 	void connect_presets_runnable_updated(const Callable &p_target);
 
 	EditorExport();

editor/export/project_export.cpp

@@ -534,10 +534,33 @@ void ProjectExportDialog::_name_changed(const String &p_string) {
 	Ref<EditorExportPreset> current = get_current_preset();
 	ERR_FAIL_COND(current.is_null());
 
-	current->set_name(p_string);
+	int current_index = presets->get_current();
+
+	String trimmed_name = p_string.strip_edges();
+	if (trimmed_name.is_empty()) {
+		ERR_PRINT_ED("Invalid preset name: preset name cannot be empty!");
+		name->set_text(current->get_name());
+		return;
+	}
+
+	if (EditorExport::get_singleton()->has_preset_with_name(trimmed_name, current_index)) {
+		ERR_PRINT_ED(vformat("Invalid preset name: a preset with the name '%s' already exists!", trimmed_name));
+		name->set_text(current->get_name());
+		return;
+	}
+
+	current->set_name(trimmed_name);
 	_update_presets();
 }
 
+void ProjectExportDialog::_name_editing_finished() {
+	if (updating) {
+		return;
+	}
+
+	_name_changed(name->get_text());
+}
+
 void ProjectExportDialog::set_export_path(const String &p_value) {
 	Ref<EditorExportPreset> current = get_current_preset();
 	ERR_FAIL_COND(current.is_null());
@@ -1506,7 +1529,8 @@ ProjectExportDialog::ProjectExportDialog() {
 
 	name = memnew(LineEdit);
 	settings_vb->add_margin_child(TTR("Name:"), name);
-	name->connect(SceneStringName(text_changed), callable_mp(this, &ProjectExportDialog::_name_changed));
+	name->connect(SceneStringName(text_submitted), callable_mp(this, &ProjectExportDialog::_name_changed));
+	name->connect(SceneStringName(focus_exited), callable_mp(this, &ProjectExportDialog::_name_editing_finished));
 
 	runnable = memnew(CheckButton);
 	runnable->set_text(TTR("Runnable"));

editor/export/project_export.h

@@ -133,6 +133,7 @@ class ProjectExportDialog : public ConfirmationDialog {
 	void _runnable_pressed();
 	void _update_parameters(const String &p_edited_property);
 	void _name_changed(const String &p_string);
+	void _name_editing_finished();
 	void _export_path_changed(const StringName &p_property, const Variant &p_value, const String &p_field, bool p_changing);
 	void _add_preset(int p_platform);
 	void _edit_preset(int p_index);