FIX: Default action was not executed after pressing enter on empty modal window 2024.2

frontend-html/src/gui/Workbench/ScreenArea/FormView/BackupFocusPlaceHolder.module.scss

@@ -0,0 +1,25 @@
+/*
+Copyright 2005 - 2024 Advantage Solutions, s. r. o.
+
+This file is part of ORIGAM (http://www.origam.org).
+
+ORIGAM is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+ORIGAM is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with ORIGAM. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+.root {
+  width: 0;
+  height: 0;
+  padding: 0;
+  border: none;
+}

frontend-html/src/gui/Workbench/ScreenArea/FormView/BackupFocusPlaceHolder.tsx

@@ -0,0 +1,52 @@
+/*
+Copyright 2005 - 2024 Advantage Solutions, s. r. o.
+
+This file is part of ORIGAM (http://www.origam.org).
+
+ORIGAM is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+ORIGAM is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with ORIGAM. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+import React, { useEffect, useRef } from "react";
+import { getFormFocusManager } from "model/selectors/DataView/getFormFocusManager";
+import { getDataView } from "model/selectors/DataView/getDataView";
+import uiActions from "model/actions-ui-tree";
+import S from "gui/Workbench/ScreenArea/FormView/BackupFocusPlaceHolder.module.scss";
+
+
+// This components should get focus if there are no other focusable inputs on the screen section.
+// This will ensure that the focus does not stay where we don't expect it to be. For example on
+// the parent screen after opening a model window. 
+export const BackupFocusPlaceHolder = (props: { ctx: any; }) => {
+  const refInput = useRef<HTMLInputElement>(null);
+  useEffect(() => {
+    const focusManager = getFormFocusManager(getDataView(props.ctx));
+    focusManager.setBackupFocusPlaceHolder(refInput.current);
+  }, []);
+
+  return (
+    <input
+      className={S.root}
+      onKeyDown={(event) => {
+        if (event.key === "Enter") {
+          const dataView = getDataView(props.ctx);
+          if (dataView.firstEnabledDefaultAction) {
+            uiActions.actions.onActionClick(dataView.firstEnabledDefaultAction)(
+              event,
+              dataView.firstEnabledDefaultAction
+            );
+          }
+        }
+      }}
+      ref={refInput} />);
+};

frontend-html/src/gui/Workbench/ScreenArea/FormView/FormBuilder.tsx

@@ -43,6 +43,7 @@ import { getRowStateForegroundColor } from "model/selectors/RowState/getRowState
 import { dimensionsFromProperty, dimensionsFromXmlNode } from "gui/Components/Form/FieldDimensions";
 import { findStrings } from "xmlInterpreters/xmlUtils";
 import { TabIndex } from "model/entities/TabIndexOwner";
+import { BackupFocusPlaceHolder } from "gui/Workbench/ScreenArea/FormView/BackupFocusPlaceHolder";
 
 
 @inject(({dataView}) => {
@@ -92,6 +93,7 @@ export class FormBuilder extends React.Component<{
             style={{backgroundColor}}
           >
             {xfo.elements.map((child: any) => recursive(child))}
+            <BackupFocusPlaceHolder ctx={self.props.dataView}/>
           </FormRoot>
         );
       } else if (xfo.name === "FormElement" && xfo.attributes.Type === "FormSection") {

frontend-html/src/model/entities/FormFocusManager.ts

@@ -24,6 +24,7 @@ import { getDataView } from "model/selectors/DataView/getDataView";
 
 export class FormFocusManager {
   autoFocusDisabled = false;
+  backupFocusPlaceholder: HTMLInputElement | undefined | null;
 
   private isFormPerspectiveActive(){
     const dataView = getDataView(this.parent);
@@ -61,6 +62,10 @@ export class FormFocusManager {
     this.focusableContainers = this.focusableContainers.sort(compareTabIndexOwners);
   }
 
+  setBackupFocusPlaceHolder(input: HTMLInputElement | null) {
+    this.backupFocusPlaceholder = input
+  }
+
   focus(name: string) {
     let focusable = this.focusableContainers.find((container) => container.name === name)?.focusable;
     this.focusAndRemember(focusable);
@@ -83,6 +88,12 @@ export class FormFocusManager {
   }
 
   forceAutoFocus() {
+    if (this.focusableContainers.length === 0 && this.backupFocusPlaceholder) {
+      setTimeout(() => {
+        this.backupFocusPlaceholder?.focus();
+      }, 0);
+      return;
+    }
     const focusable = this.focusableContainers[0].focusable;
     if (focusable.disabled) {
       //  (focusable as any).readOnly returns always false => readonly fields cannot be skipped
@@ -95,7 +106,8 @@ export class FormFocusManager {
   }
 
   autoFocus() {
-    if (this.focusableContainers.length === 0 || this.autoFocusDisabled || isGlobalAutoFocusDisabled(this.parent)) {
+    const nothingToFocus = this.focusableContainers.length === 0 && !this.backupFocusPlaceholder;
+    if (nothingToFocus || this.autoFocusDisabled || isGlobalAutoFocusDisabled(this.parent)) {
       return;
     }
     this.forceAutoFocus();