Added form script for snippet entity

Author: DigitalFlow

src/web/scripts/xtl-snippet.form.js

@@ -0,0 +1,34 @@
+(function(XtlSnippet, undefined) {
+    const setXtlExpressionVisibility = (executionContext) => {
+        const context = executionContext.getFormContext();
+
+        const isPlainText = context.getAttribute("oss_containsplaintext").getValue();
+        const isHtml = context.getAttribute("oss_ishtml").getValue();
+
+        const showRichTextControl = isPlainText && isHtml;
+
+        context.getControl("oss_xtlexpression").setVisible(!showRichTextControl);
+        context.getControl("oss_xtlexpression1").setVisible(showRichTextControl);
+    };
+
+    const setIsHtmlVisibility = (executionContext) => {
+        const context = executionContext.getFormContext();
+
+        const isPlainText = context.getAttribute("oss_containsplaintext").getValue();
+
+        context.getControl("oss_ishtml").setVisible(isPlainText);
+    };
+
+
+    XtlSnippet.onLoad = (executionContext) => {
+        const context = executionContext.getFormContext();
+
+        context.getAttribute("oss_containsplaintext").addOnChange(setXtlExpressionVisibility);
+        context.getAttribute("oss_containsplaintext").addOnChange(setIsHtmlVisibility);
+        context.getAttribute("oss_ishtml").addOnChange(setXtlExpressionVisibility);
+
+        setXtlExpressionVisibility(executionContext);
+        setIsHtmlVisibility(executionContext);
+    };
+
+})(window.XtlSnippet = window.XtlSnippet || {});