FEAT: improvement of DHApplicationMixin

FEAT: create a new DHBaseItemSheet

module/applications/sheets/api/application-mixin.mjs

@@ -0,0 +1,102 @@
+const { HandlebarsApplicationMixin } = foundry.applications.api;
+
+/**
+ * @typedef {object} DragDropConfig
+ * @property {string|null} dragSelector - A CSS selector that identifies draggable elements.
+ * @property {string|null} dropSelector - A CSS selector that identifies drop targets.
+ */
+
+/**
+ * @typedef {import("@client/applications/api/handlebars-application.mjs").HandlebarsRenderOptions} HandlebarsRenderOptions
+ * @typedef {foundry.applications.types.ApplicationConfiguration & HandlebarsRenderOptions & { dragDrop?: DragDropConfig[] }} DHSheetV2Configuration
+ */
+
+/**
+ * @template {Constructor<foundry.applications.api.DocumentSheet>} BaseDocumentSheet
+ * @param {BaseDocumentSheet} Base - The base class to extend.
+ * @returns {BaseDocumentSheet}
+ */
+export default function DHApplicationMixin(Base) {
+  class DHSheetV2 extends HandlebarsApplicationMixin(Base) {
+    /**
+     * @param {DHSheetV2Configuration} [options={}]
+     */
+    constructor(options = {}) {
+      super(options);
+      /**
+       * @type {foundry.applications.ux.DragDrop[]}
+       * @private
+       */
+      this._dragDrop = this._createDragDropHandlers();
+    }
+
+    /**
+     * The default options for the sheet.
+     * @type {DHSheetV2Configuration}
+     */
+    static DEFAULT_OPTIONS = {
+       classes: ['daggerheart', 'sheet', 'dh-style'],
+      position: {
+        width: 480,
+        height: 'auto'
+      },
+
+      dragDrop: []
+    };
+
+    /* -------------------------------------------- */
+
+    /**@inheritdoc */
+    _attachPartListeners(partId, htmlElement, options) {
+      super._attachPartListeners(partId, htmlElement, options);
+      this._dragDrop.forEach(d => d.bind(htmlElement));
+    }
+
+    /* -------------------------------------------- */
+    /*  Drag and Drop                               */
+    /* -------------------------------------------- */
+
+    /**
+     * Creates drag-drop handlers from the configured options.
+     * @returns {foundry.applications.ux.DragDrop[]}
+     * @private
+     */
+    _createDragDropHandlers() {
+      return this.options.dragDrop.map(d => {
+        d.callbacks = {
+          drop: this._onDrop.bind(this)
+        };
+        return new foundry.applications.ux.DragDrop.implementation(d);
+      });
+    }
+
+    /**
+     * Handle drop event.
+     * @param {DragEvent} event
+     * @protected
+     */
+    _onDrop(event) { }
+
+    /* -------------------------------------------- */
+    /*  Prepare Context                             */
+    /* -------------------------------------------- */
+
+    /**
+     * Prepare the template context.
+     * @param {object} options
+     * @param {string} [objectPath='document']
+     * @returns {Promise<object>}
+     * @inheritdoc
+     */
+    async _prepareContext(options, objectPath = 'document') {
+      const context = await super._prepareContext(options);
+      context.config = CONFIG.daggerheart;
+      context.source = this[objectPath];
+      context.fields = this[objectPath].schema.fields;
+      context.systemFields = this[objectPath].system ? this[objectPath].system.schema.fields : {};
+      return context;
+    }
+  }
+
+  return DHSheetV2;
+}