Added hint (placeholder) option

Closes joomla#151

administrator/components/com_fields/models/forms/field.xml

@@ -90,6 +90,9 @@
 			<field name="label" type="text" label="COM_FIELDS_FIELD_LABEL_LABEL"
 				description="COM_FIELDS_FIELD_LABEL_DESC" class="input-xxlarge"
 				size="40" required="true" />
+			<field name="hint" type="text" label="COM_FIELDS_FIELD_HINT_LABEL"
+				description="COM_FIELDS_FIELD_HINT_DESC" class="input-xxlarge"
+				size="40" />
 			<field name="image" type="media" label="COM_FIELDS_FIELD_IMAGE_LABEL"
 				description="COM_FIELDS_FIELD_IMAGE_DESC" />
 			<field name="image_alt" type="text"

administrator/language/en-GB/en-GB.com_fields.ini

@@ -57,6 +57,8 @@ COM_FIELDS_FIELD_IMAGE_DESC="Image label."
 COM_FIELDS_FIELD_IMAGE_LABEL="Image"
 COM_FIELDS_FIELD_LABEL_DESC="The label of the field to display."
 COM_FIELDS_FIELD_LABEL_LABEL="Label"
+COM_FIELDS_FIELD_HINT_DESC="The hint if the field, also called placeholder."
+COM_FIELDS_FIELD_HINT_LABEL="Hint"
 COM_FIELDS_FIELD_LANGUAGE_DESC="Assign a language to this field."
 COM_FIELDS_FIELD_NOTE_DESC="An optional note for the field."
 COM_FIELDS_FIELD_NOTE_LABEL="Note"

libraries/joomla/form/field.php

@@ -1096,6 +1096,7 @@ public function appendXMLFieldTag ($field, DOMElement $parent, JForm $form)
 		$node->setAttribute('label', $field->label);
 		$node->setAttribute('description', $field->description);
 		$node->setAttribute('class', $field->class);
+		$node->setAttribute('hint', $field->params->get('hint', 0));
 		$node->setAttribute('required', $field->required ? 'true' : 'false');
 		$node->setAttribute('readonly', $field->params->get('readonly', 0) ? 'true' : 'false');