Fix some type issues to make everything play more nicely together

(Not complaining about things from parent classes being missing, mostly)

api/js/etemplate/Et2Button/Et2Button.ts

@@ -13,7 +13,6 @@ import {css, html} from "@lion/core";
 import {LionButton} from "@lion/button";
 import {SlotMixin} from "@lion/core";
 import {Et2InputWidget} from "../Et2InputWidget/Et2InputWidget";
-import {Et2Widget} from "../Et2Widget/Et2Widget";
 
 export class Et2Button extends Et2InputWidget(SlotMixin(LionButton))
 {
@@ -179,4 +178,5 @@ export class Et2Button extends Et2InputWidget(SlotMixin(LionButton))
 	}
 }
 
+// @ts-ignore TypeScript is not recognizing that Et2Button is a LitElement
 customElements.define("et2-button", Et2Button);

api/js/etemplate/Et2Date/Et2Date.ts

@@ -159,7 +159,7 @@ export class Et2Date extends Et2InputWidget(LionInputDatepicker)
 	serializer(modelValue : Date)
 	{
 		// isValidDate() is hidden inside LionInputDate, and not exported
-		//if(!isValidDate(modelValue))
+		// @ts-ignore Can't call isNan(Date), but we're just checking
 		if(!(modelValue instanceof Date) || isNaN(modelValue))
 		{
 			return '';
@@ -183,4 +183,5 @@ export class Et2Date extends Et2InputWidget(LionInputDatepicker)
 	}
 }
 
+// @ts-ignore TypeScript is not recognizing that Et2Date is a LitElement
 customElements.define("et2-date", Et2Date);

api/js/etemplate/Et2InputWidget/Et2InputWidget.ts

@@ -6,19 +6,47 @@ import {dedupeMixin} from "@lion/core";
  * This mixin will allow any LitElement to become an Et2InputWidget
  *
  * Usage:
- * export class Et2Button extends Et2InputWidget(Et2Widget(LitWidget)) {...}
+ * export class Et2Button extends Et2InputWidget(LitWidget)) {...}
  */
 
+/**
+ * Need to define the interface first, to get around TypeScript issues with protected/public
+ * This must match the public API for Et2InputWidgetClass
+ * @see https://lit.dev/docs/composition/mixins/#typing-the-subclass
+ */
+export declare class Et2InputWidgetInterface
+{
+	readOnly : boolean;
+	protected value : string | number | Object;
 
-const Et2InputWidgetClass = superclass =>
-	class extends Et2Widget(superclass) implements et2_IInput, et2_IInputNode
+	public set_value(any) : void;
+
+	public get_value() : any;
+
+	public getValue() : any;
+
+	public isDirty() : boolean;
+
+	public resetDirty() : void;
+
+	public isValid(messages : string[]) : boolean;
+}
+
+const Et2InputWidgetMixin = (superclass) =>
+{
+	class Et2InputWidgetClass extends Et2Widget(superclass) implements et2_IInput, et2_IInputNode
 	{
-
-		label : string = '';
 		protected value : string | number | Object;
 		protected _oldValue : string | number | Object;
 
 		/** WebComponent **/
+		static get styles()
+		{
+			return [
+				...super.styles
+			];
+		}
+
 		static get properties()
 		{
 			return {
@@ -111,6 +139,8 @@ const Et2InputWidgetClass = superclass =>
 			// From LionInput
 			return this._inputNode;
 		}
-	};
+	}
 
-export const Et2InputWidget = dedupeMixin(Et2InputWidgetClass);
+	return Et2InputWidgetClass;
+}
+export const Et2InputWidget = dedupeMixin(Et2InputWidgetMixin);

api/js/etemplate/Et2Textarea/Et2Textarea.ts

@@ -79,4 +79,5 @@ export class Et2Textarea extends Et2InputWidget(LionTextarea)
 	}
 }
 
+// @ts-ignore TypeScript is not recognizing that Et2Textarea is a LitElement
 customElements.define("et2-textarea", Et2Textarea);

api/js/etemplate/Et2Textbox/Et2Textbox.ts

@@ -45,4 +45,5 @@ export class Et2Textbox extends Et2InputWidget(LionInput)
 	}
 }
 
+// @ts-ignore TypeScript is not recognizing that Et2Textbox is a LitElement
 customElements.define("et2-textbox", Et2Textbox);

api/js/etemplate/Et2Widget/Et2Widget.ts

@@ -7,7 +7,7 @@ import {et2_cloneObject, et2_csvSplit} from "../et2_core_common";
 // @ts-ignore
 import type {IegwAppLocal} from "../../jsapi/egw_global";
 import {ClassWithAttributes, ClassWithInterfaces} from "../et2_core_inheritance";
-import {LitElement} from "@lion/core";
+import {dedupeMixin} from "@lion/core";
 import type {et2_container} from "../et2_core_baseWidget";
 
 /**
@@ -35,8 +35,7 @@ function applyMixins(derivedCtor : any, baseCtors : any[])
 	});
 }
 
-type Constructor<T = {}> = new (...args : any[]) => T;
-export const Et2Widget = <T extends Constructor<LitElement>>(superClass : T) =>
+const Et2WidgetMixin = (superClass) =>
 {
 	class Et2WidgetClass extends superClass implements et2_IDOMNode
 	{
@@ -55,9 +54,9 @@ export const Et2Widget = <T extends Constructor<LitElement>>(superClass : T) =>
 		/**
 		 * Properties - default values, and actually creating them as fields
 		 */
-		private label : string = "";
+		private _label : string = "";
 		private statustext : string = "";
-		private disabled : Boolean = false;
+		protected disabled : Boolean = false;
 
 
 		/** WebComponent **/
@@ -107,7 +106,7 @@ export const Et2Widget = <T extends Constructor<LitElement>>(superClass : T) =>
 		{
 			super.connectedCallback();
 
-			this.set_label(this.label);
+			this.set_label(this._label);
 
 			if(this.statustext)
 			{
@@ -132,7 +131,7 @@ export const Et2Widget = <T extends Constructor<LitElement>>(superClass : T) =>
 		 */
 		set_label(value : string)
 		{
-			let oldValue = this.label;
+			let oldValue = this._label;
 
 			// Remove old
 			let oldLabels = this.getElementsByClassName("et2_label");
@@ -141,12 +140,12 @@ export const Et2Widget = <T extends Constructor<LitElement>>(superClass : T) =>
 				this.removeChild(oldLabels[0]);
 			}
 
-			this.label = value;
+			this._label = value;
 			if(value)
 			{
 				let label = document.createElement("span");
 				label.classList.add("et2_label");
-				label.textContent = this.label;
+				label.textContent = this._label;
 				// We should have a slot in the template for the label
 				//label.slot="label";
 				this.appendChild(label);
@@ -791,21 +790,22 @@ export const Et2Widget = <T extends Constructor<LitElement>>(superClass : T) =>
 		}
 	};
 
-
 	// Add some more stuff in
 	applyMixins(Et2WidgetClass, [ClassWithInterfaces]);
 
-	return Et2WidgetClass as unknown as Constructor<et2_IDOMNode> & T;
+	return Et2WidgetClass;
 }
+export const Et2Widget = dedupeMixin(Et2WidgetMixin);
 
 /**
  * Load a Web Component
  * @param _nodeName
  * @param _template_node
  */
-export function loadWebComponent(_nodeName : string, _template_node, parent : Et2WidgetClass | et2_widget) : HTMLElement
+export function loadWebComponent(_nodeName : string, _template_node, parent : Et2Widget | et2_widget) : HTMLElement
 {
-	let widget = <Et2WidgetClass>document.createElement(_nodeName);
+	// @ts-ignore
+	let widget = <Et2Widget>document.createElement(_nodeName);
 	widget.textContent = _template_node.textContent;
 
 	const widget_class = window.customElements.get(_nodeName);