FEAT: basic PseudoDocumentSheet

module/applications/_module.mjs

@@ -12,3 +12,5 @@ export { default as DhpWeapon } from './sheets/items/weapon.mjs';
 export { default as DhpArmor } from './sheets/items/armor.mjs';
 export { default as DhpChatMessage } from './chatMessage.mjs';
 export { default as DhpEnvironment } from './sheets/environment.mjs';
+
+export * as  pseudoDocumentSheet from "./sheets/pseudo-documents/_module.mjs";

module/applications/sheets/pseudo-documents/_module.mjs

@@ -0,0 +1 @@
+export {default as PseudoDocumentSheet }from "./pseudo-documents-sheet.mjs";

module/applications/sheets/pseudo-documents/pseudo-documents-sheet.mjs

@@ -0,0 +1,67 @@
+const { ApplicationV2, HandlebarsApplicationMixin } = foundry.applications.api;
+
+export default class PseudoDocumentSheet extends HandlebarsApplicationMixin(ApplicationV2) {
+  constructor(options) {
+    super(options);
+    this.#pseudoDocument = options.document;
+  }
+
+  /**
+  * The UUID of the associated pseudo-document
+  * @type {string}
+  */
+  get pseudoUuid() {
+    return this.pseudoDocument.uuid;
+  }
+
+  #pseudoDocument;
+
+  /**
+   * The pseudo-document instance this sheet represents
+   * @type {object}
+   */
+  get pseudoDocument() {
+    return this.#pseudoDocument;
+  }
+
+  static DEFAULT_OPTIONS = {
+    tag: 'form',
+    classes: ['daggerheart', 'sheet'],
+    position: { width: 600 },
+    form: {
+      handler: PseudoDocumentSheet.#onSubmitForm,
+      submitOnChange: true,
+      closeOnSubmit: false
+    },
+    dragDrop: [{ dragSelector: null, dropSelector: null }],
+  };
+
+  static PARTS = {
+    header: { template: 'systems/daggerheart/templates/sheets/pseudo-documents/header.hbs' },
+  };
+
+  /** @inheritDoc */
+  async _prepareContext(options) {
+    const context = await super._prepareContext(options);
+    const document = this.pseudoDocument;
+    return Object.assign(context, {
+      document,
+      source: document._source,
+      fields: document.schema.fields,
+      editable: this.isEditable,
+      user: game.user,
+      rootId: this.id,
+    });
+  }
+
+  /**
+   * Form submission handler
+   * @param {SubmitEvent | Event} event - The originating form submission or input change event
+   * @param {HTMLFormElement} form - The form element that was submitted
+   * @param {foundry.applications.ux.FormDataExtended} formData - Processed data for the submitted form
+   */
+  static async #onSubmitForm(event, form, formData) {
+    const submitData = foundry.utils.expandObject(formData.object);
+    await this.pseudoDocument.update(submitData, options);
+  }
+}

module/config/pseudoConfig.mjs

@@ -1,12 +1,14 @@
 import { pseudoDocuments } from "../data/_module.mjs";
+import { pseudoDocumentSheet } from "../applications/_module.mjs";
 
 //CONFIG.daggerheart.pseudoDocuments
 export default {
+  sheetClass: pseudoDocumentSheet.PseudoDocumentSheet,
   feature: {
     label: "DAGGERHEART.Feature.Label",
     documentClass: pseudoDocuments.feature.BaseFeatureData,
     types: {
-      weapon:{
+      weapon: {
         label: "DAGGERHEART.Feature.Weapon.Label",
         documentClass: pseudoDocuments.feature.WeaponFeature,
       }

module/data/pseudo-documents/base/base.mjs

@@ -20,7 +20,7 @@ export default class BasePseudoDocument extends foundry.abstract.DataModel {
             name: '',
             embedded: {},
             defaultArtwork: foundry.documents.Item.DEFAULT_ICON,
-            sheetClass: null
+            sheetClass: CONFIG.daggerheart.pseudoDocuments.sheetClass,
         };
     }
 

module/data/pseudo-documents/base/sheetManagementMixin.mjs

@@ -16,7 +16,8 @@ export default function SheetManagementMixin(Base) {
         get sheet() {
             if (this._sheet) return this._sheet;
             const cls = this.constructor.metadata.sheetClass ?? ApplicationV2;
-            if (!ApplicationV2.isPrototypeOf(cls)) {
+            
+            if (!foundry.utils.isSubclass(cls, ApplicationV2)) {
                 return void ui.notifications.error(
                     'Daggerheart | Error on PseudoDocument | sheetClass must be ApplicationV2'
                 );
@@ -24,6 +25,7 @@ export default function SheetManagementMixin(Base) {
 
             const sheet = new cls({ document: this });
             this._sheet = sheet;
+            return sheet;
         }
 
         /* -------------------------------------------- */

module/data/pseudo-documents/feature/baseFeatureData.mjs

@@ -8,7 +8,7 @@ export default class BaseFeatureData extends PseudoDocument {
             {
                 name: 'feature',
                 embedded: {},
-                sheetClass: null //TODO: define feature-sheet
+                //sheetClass: null //TODO: define feature-sheet
             },
             { inplace: false }
         );

templates/sheets/pseudo-documents/header.hbs

@@ -0,0 +1,3 @@
+<header>
+   {{log this}}
+</header>