update cancel and reset behavior

src/registrar/assets/src/js/getgov/form-nameservers.js

@@ -4,6 +4,7 @@ export class NameserverForm {
     constructor() {
         this.addNameserverButton = document.getElementById('nameserver-add-form');
         this.nameserversForm = document.querySelector('.nameservers-form');
+        this.formChanged = false;
 
         // Bind event handlers to maintain 'this' context
         this.handleAddFormClick = this.handleAddFormClick.bind(this);
@@ -28,6 +29,20 @@ export class NameserverForm {
             showElement(this.nameserversForm);
             hideElement(this.addNameserverButton);
         }
+
+        // handle display of table view errors
+        // if error exists in an edit-row, make that row show, and readonly row hide
+        const formTable = document.querySelector('.usa-table')
+        if (formTable) {
+            const editRows = formTable.querySelectorAll('.edit-row');
+            editRows.forEach(editRow => {
+                if (editRow.querySelector('.usa-input--error')) {
+                    const readOnlyRow = editRow.previousElementSibling;
+                    showElement(editRow);
+                    hideElement(readOnlyRow);
+                }
+            })
+        }
     }
 
     initializeEventListeners() {
@@ -42,6 +57,14 @@ export class NameserverForm {
         cancelButtons.forEach(cancelButton => {
             cancelButton.addEventListener('click', this.handleCancelClick);
         });
+
+        const textInputs = document.querySelectorAll("input[type='text']");
+        textInputs.forEach(input => {
+            input.addEventListener("input", function() {
+                this.formChanged = true;
+                console.log("Form changed");
+            })
+        })
     }
 
     handleAddFormClick(event) {
@@ -53,37 +76,117 @@ export class NameserverForm {
         let editButton = event.target;
         let readOnlyRow = editButton.closest('tr'); // Find the closest row
         let editRow = readOnlyRow.nextElementSibling; // Get the next row
-
         if (!editRow || !readOnlyRow) {
             console.warn("Expected DOM element but did not find it");
             return;
         }
-
         // Check if any other edit row is currently visible and hide it
         document.querySelectorAll('tr.edit-row:not(.display-none)').forEach(openEditRow => {
             let correspondingReadOnlyRow = openEditRow.previousElementSibling;
             hideElement(openEditRow);
             showElement(correspondingReadOnlyRow);
         });
-
+        // hide and show rows as appropriate
         hideElement(readOnlyRow);
         showElement(editRow);
     }
 
+    /**
+     * Handles the click event for the cancel button within the table form.
+     * 
+     * This method identifies the edit row containing the cancel button and resets
+     * it to its initial state, restoring the corresponding read-only row.
+     * 
+     * @param {Event} event - the click event triggered by the cancel button
+     */
     handleCancelClick(event) {
+        // get the cancel button that was clicked
         let cancelButton = event.target;
-        let editRow = cancelButton.closest('tr'); // Find the closest row
-        let readOnlyRow = editRow.previousElementSibling; // Get the next row
+        // find the closest table row that contains the cancel button
+        let editRow = cancelButton.closest('tr');
+        if (editRow) {
+            this.resetEditRowAndFormAndCollapseEditRow(editRow);
+        } else {
+            console.warn("Expected DOM element but did not find it");
+        }
+    }
 
+    resetEditRowAndFormAndCollapseEditRow(editRow) {
+        let readOnlyRow = editRow.previousElementSibling; // Get the next row
         if (!editRow || !readOnlyRow) {
             console.warn("Expected DOM element but did not find it");
             return;
         }
-
+        // reset the values set in editRow
+        this.resetInputValuesInRow(editRow);
+        // copy values from editRow to readOnlyRow
+        this.copyEditRowToReadonlyRow(editRow, readOnlyRow);
+        // remove errors from the editRow
+        this.removeErrorsFromRow(editRow);
+        // remove errors from the entire form
+        this.removeFormErrors();
+        // reset formChanged
+        this.resetFormChanged();
+        // hide and show rows as appropriate
         hideElement(editRow);
         showElement(readOnlyRow);
     }
 
+    resetInputValuesInRow(editRow) {
+        let textInputs = editRow.querySelectorAll("input[type='text']");
+        textInputs.forEach(input => {
+            input.value = input.dataset.initialValue;
+        })
+    }
+
+    copyEditRowToReadonlyRow(editRow, readOnlyRow) {
+        let textInputs = editRow.querySelectorAll("input[type='text']");
+        let tds = readOnlyRow.querySelectorAll("td");
+
+        // if server is defined, copy the value to the first td in readOnlyRow
+        if (textInputs[0] && tds[0]) {
+            tds[0].innerText = textInputs[0].value;
+        }
+
+        // if ip is defined, copy the value to the second td in readOnlyRow
+        if (textInputs[1] && tds[1]) {
+            tds[1].innerText = textInputs[1].value;
+        }
+    }
+
+    removeErrorsFromRow(editRow) {
+        // remove class 'usa-form-group--error' from divs in editRow
+        editRow.querySelectorAll("div.usa-form-group--error").forEach(div => {
+            div.classList.remove("usa-form-group--error");
+        });
+
+        // remove class 'usa-label--error' from labels in editRow
+        editRow.querySelectorAll("label.usa-label--error").forEach(label => {
+            label.classList.remove("usa-label--error");
+        });
+
+        // Remove divs whose id ends with '__error-message' (error message divs)
+        editRow.querySelectorAll("div[id$='__error-message']").forEach(errorDiv => {
+            errorDiv.remove();
+        });
+
+        // remove class 'usa-input--error' from inputs in editRow
+        editRow.querySelectorAll("input.usa-input--error").forEach(input => {
+            input.classList.remove("usa-input--error");
+        });
+    }
+
+    removeFormErrors() {
+        let formErrorDiv = document.getElementById("form-errors");
+        if (formErrorDiv) {
+            formErrorDiv.remove();
+        }
+    }
+
+    resetFormChanged() {
+        this.formChanged = false;
+    }
+
 }
 
 export function initFormNameservers() {

src/registrar/templates/domain_nameservers.html

@@ -62,13 +62,13 @@
               <div class="grid-row grid-gap-2 flex-end">
                 <div class="tablet:grid-col-6">
                   {% with sublabel_text="Example: ns"|concat:forloop.counter|concat:".example.com" %}
-                    {% with attr_required=True span_for_text=True %}
+                    {% with attr_required=True span_for_text=True add_initial_value_attr=True %}
                       {% input_with_errors form.server %}
                     {% endwith %}
                   {% endwith %}
                 </div>
                 <div class="tablet:grid-col-6">
-                  {% with attr_required=True label_text=form.ip.label sublabel_text="Example: 86.124.49.54 or 2001:db8::1234:5678" add_group_class="usa-form-group--unstyled-error" add_aria_label="Name server "|concat:forloop.counter|concat:" "|concat:form.ip.label %}
+                  {% with attr_required=True add_initial_value_attr=True label_text=form.ip.label sublabel_text="Example: 86.124.49.54 or 2001:db8::1234:5678" add_group_class="usa-form-group--unstyled-error" add_aria_label="Name server "|concat:forloop.counter|concat:" "|concat:form.ip.label %}
                     {% input_with_errors form.ip %}
                   {% endwith %}
                 </div>
@@ -164,13 +164,13 @@
               <tr class="edit-row display-none">
                 <td>
                   {% with sublabel_text="Example: ns"|concat:forloop.counter|concat:".example.com" %}
-                    {% with attr_required=True span_for_text=True add_group_class="margin-top-0" %}
+                    {% with attr_required=True add_initial_value_attr=True span_for_text=True add_group_class="margin-top-0" %}
                       {% input_with_errors form.server %}
                     {% endwith %}
                   {% endwith %}
                 </td>
                 <td>
-                  {% with attr_required=True label_text=form.ip.label sublabel_text="Example: 86.124.49.54 or 2001:db8::1234:5678" add_group_class="usa-form-group--unstyled-error" add_aria_label="Name server "|concat:forloop.counter|concat:" "|concat:form.ip.label add_group_class="margin-top-0" %}
+                  {% with attr_required=True add_initial_value_attr=True label_text=form.ip.label sublabel_text="Example: 86.124.49.54 or 2001:db8::1234:5678" add_group_class="usa-form-group--unstyled-error" add_aria_label="Name server "|concat:forloop.counter|concat:" "|concat:form.ip.label add_group_class="margin-top-0" %}
                     {% input_with_errors form.ip %}
                   {% endwith %}
                 </td>
@@ -225,18 +225,18 @@
               {% with sublabel_text="Example: ns"|concat:forloop.counter|concat:".example.com" %}
                 {% if forloop.counter <= 2 %}
                   {# span_for_text will wrap the copy in s <span>, which we'll use in the JS for this component #}
-                  {% with attr_required=True add_group_class="usa-form-group--unstyled-error" span_for_text=True %}
+                  {% with attr_required=True add_initial_value_attr=True add_group_class="usa-form-group--unstyled-error" span_for_text=True %}
                     {% input_with_errors form.server %}
                   {% endwith %}
                 {% else %}
-                  {% with span_for_text=True %}
+                  {% with span_for_text=True add_initial_value_attr=True %}
                     {% input_with_errors form.server %}
                     {% endwith %}
                 {% endif %}
               {% endwith %}
             </div>
             <div class="tablet:grid-col-6">
-              {% with attr_required=True label_text=form.ip.label sublabel_text="Example: 86.124.49.54 or 2001:db8::1234:5678" add_group_class="usa-form-group--unstyled-error" add_aria_label="Name server "|concat:forloop.counter|concat:" "|concat:form.ip.label %}
+              {% with attr_required=True add_initial_value_attr=True label_text=form.ip.label sublabel_text="Example: 86.124.49.54 or 2001:db8::1234:5678" add_group_class="usa-form-group--unstyled-error" add_aria_label="Name server "|concat:forloop.counter|concat:" "|concat:form.ip.label %}
                 {% input_with_errors form.ip %}
               {% endwith %}
             </div>

src/registrar/templatetags/field_helpers.py

@@ -173,6 +173,10 @@ def input_with_errors(context, field=None):  # noqa: C901
     if aria_labels:
         context["aria_label"] = " ".join(aria_labels)
 
+    # Conditionally add the data-initial-value attribute
+    if context.get("add_initial_value_attr", False):
+        attrs["data-initial-value"] = field.initial or ""
+
     # ask Django to give us the widget dict
     # see Widget.get_context() on
     # https://docs.djangoproject.com/en/4.1/ref/forms/widgets