/* Add Placeholder fields to Gravity Forms */

/* Add a custom field to the field editor (See editor screenshot) */
add_action("gform_field_standard_settings", "my_standard_settings", 10, 2);

function my_standard_settings($position, $form_id){

// Create settings on position 25 (right after Field Label)

	if($position == 25){
	?>

		<li class="admin_label_setting field_setting" style="display: list-item; ">
			<label for="field_placeholder">Placeholder Text

				<!-- Tooltip to help users understand what this field does -->
				<a href="javascript:void(0);" class="tooltip tooltip_form_field_placeholder" tooltip="&lt;h6&gt;Placeholder&lt;/h6&gt;Enter the placeholder/default text for this field.">(?)</a>

			</label>

		<input type="text" id="field_placeholder" class="fieldwidth-3" size="35" onkeyup="SetFieldProperty('placeholder', this.value);">

		</li>
	<?php
	}
}

/* Now we execute some javascript technicalitites for the field to load correctly */

add_action("gform_editor_js", "my_gform_editor_js");

function my_gform_editor_js(){
?>
	<script>
		//binding to the load field settings event to initialize the checkbox
		jQuery(document).bind("gform_load_field_settings", function(event, field, form){
		jQuery("#field_placeholder").val(field["placeholder"]);
		});
	</script>

<?php
}

/* We use jQuery to read the placeholder value and inject it to its field */

add_action('gform_enqueue_scripts',"my_gform_enqueue_scripts", 10, 2);

function my_gform_enqueue_scripts($form, $is_ajax=false){
?>
	<script>

		jQuery(function(){
		<?php

			/* Go through each one of the form fields */

			foreach($form['fields'] as $i=>$field){

				/* Check if the field has an assigned placeholder */

				if(isset($field['placeholder']) && !empty($field['placeholder'])){

					/* If a placeholder text exists, inject it as a new property to the field using jQuery */

					?>

					jQuery('#input_<?php echo $form['id']?>_<?php echo $field['id']?>').attr('placeholder','<?php echo $field['placeholder']?>');

				<?php
				}
			}
		?>
		});
	</script>
<?php
}