/ Unhook default Thematic functions
function unhook_thematic_functions() {
remove_action( ‘print_media_templates’, ‘td_change_backbone_js_hook’);
add_action(‘print_media_templates’, ‘custom_td_change_backbone_js_hook’);
}
add_action( ‘init’, ‘unhook_thematic_functions’ );

/**
* custom gallery setting
*/
function custom_td_custom_gallery_settings_hook () {
// define your backbone template;
// the “tmpl-” prefix is required,
// and your input field should have a data-setting attribute
// matching the shortcode name
?>
<script type=”text/html” id=”tmpl-td-custom-gallery-setting”>
<label class=”setting”>
<span>Gallery Type</span>
<select data-setting=”td_select_gallery_slide”>
<option value=”slide”>TagDiv Slide Gallery</option>
<option value=””>Default </option>
</select>
</label>

<label class=”setting”>
<span>Gallery Title</span>
<input type=”text” value=”” data-setting=”td_gallery_title_input” />
</label>
</script>

<script>

jQuery(document).ready(function(){

// add your shortcode attribute and its default value to the
// gallery settings list; $.extend should work as well…
_.extend(wp.media.gallery.defaults, {
td_select_gallery_slide: ”, td_gallery_title_input: ”
});

// merge default gallery settings template with yours
wp.media.view.Settings.Gallery = wp.media.view.Settings.Gallery.extend({
template: function(view){
return wp.media.template(‘gallery-settings’)(view)
+ wp.media.template(‘td-custom-gallery-setting’)(view);
}
});

//console.log();
// wp.media.model.Attachments.trigger(‘change’)
});

</script>
<?php
}
?>