<?php
/**
 * Implements hook_theme().
 */
function views_slideshow_jcarousel_theme($existing, $type, $theme, $path) {
  return array(
    'views_slideshow_jcarousel_pager' => array(
      'variables' => array('vss_id' => NULL, 'view' => NULL, 'settings' => array(), 'location' => NULL, 'attributes' => array()),
      'template' => 'views-slideshow-jcarousel-pager',
      'path' => $path . '/theme',
    ),
    'views_slideshow_jcarousel_pager_field' => array(
      'variables' => array('view' => NULL, 'field' => NULL, 'count' => NULL),
      'template' => 'views-slideshow-jcarousel-pager-field',
      'file' => 'views_slideshow_jcarousel.theme.inc',
      'path' => $path . '/theme',
    ),
    'views_slideshow_jcarousel_pager_item' => array(
      'variables' => array('vss_id' => NULL, 'item' => NULL, 'count' => NULL, 'location' => NULL),
      'template' => 'views-slideshow-jcarousel-pager-item',
      'path' => $path . '/theme',
    ),
  );
}

/**
 * Gets the path to the jCarousel library.
 *
 * @return
 *   The path to the jCarousel library js file, or FALSE if not found.
 */
function _views_slideshow_jcarousel_library_path() {
  $jcarousel_path = libraries_get_path('jcarousel');

  if (!empty($jcarousel_path)) {
    // Attempt to use minified version of jCarousel plugin.
    if (file_exists($jcarousel_path . '/lib/jquery.jcarousel.min.js')) {
      $jcarousel_path .= '/lib/jquery.jcarousel.min.js';
    }
    // Otherwise use non-minified version if available.
    elseif (file_exists($jcarousel_path . '/lib/jquery.jcarousel.js')) {
      $jcarousel_path .= '/lib/jquery.jcarousel.js';
    }
    else {
      $jcarousel_path = FALSE;
    }
  }
  else {
    $jcarousel_path = FALSE;
  }

  return $jcarousel_path;
}

/**
 * @todo Please document this function.
 * @see http://drupal.org/node/1354
 */
function views_slideshow_jcarousel_views_slideshow_js_method_register() {
  return array(
    'viewsSlideshowJcarouselPager',
  );
}

/**
 * Implements hook_views_slideshow_info().
 */
function views_slideshow_jcarousel_views_slideshow_widget_pager_info($view) {
  $settings = array();
  // Settings for fields.
  // First verfiy that the view is using fields.
  if ($view->row_plugin->uses_fields()) {
    $settings = array(
      'views_slideshow_jcarousel_pager' => array(
        'name' => t('jCarousel Pager'),
      ),
    );
  }

  return $settings;
}

/**
 * Implements hook_views_slideshow_option_definition().
 */
function views_slideshow_jcarousel_views_slideshow_option_definition() {
  $locations = array('top', 'bottom');
  // Defaults for the pager widget.
  foreach ($locations as $location) {
    $options['widgets']['contains'][$location]['contains']['views_slideshow_pager']['contains']['views_slideshow_jcarousel_pager_fields'] = array('default' => array());
    $options['widgets']['contains'][$location]['contains']['views_slideshow_pager']['contains']['views_slideshow_jcarousel_pager_move_on_change'] = array('default' => 0);
    $options['widgets']['contains'][$location]['contains']['views_slideshow_pager']['contains']['views_slideshow_jcarousel_pager_update_on_prev_next'] = array('default' => 0);
    $options['widgets']['contains'][$location]['contains']['views_slideshow_pager']['contains']['views_slideshow_jcarousel_pager_skin'] = array('default' => 'tango');
    $options['widgets']['contains'][$location]['contains']['views_slideshow_pager']['contains']['views_slideshow_jcarousel_pager_orientation'] = array('default' => FALSE);
    $options['widgets']['contains'][$location]['contains']['views_slideshow_pager']['contains']['views_slideshow_jcarousel_pager_scroll'] = array('default' => 3);
    $options['widgets']['contains'][$location]['contains']['views_slideshow_pager']['contains']['views_slideshow_jcarousel_pager_visible'] = array('default' => 3);
    $options['widgets']['contains'][$location]['contains']['views_slideshow_pager']['contains']['views_slideshow_jcarousel_pager_wrap'] = array('default' => NULL);
    $options['widgets']['contains'][$location]['contains']['views_slideshow_pager']['contains']['views_slideshow_jcarousel_pager_animation'] = array('default' => 'fast');
  }

  return $options;
}

/**
 * Implementation [widget-type]_views_slideshow_pager_form_options
 */
function views_slideshow_jcarousel_pager_views_slideshow_widget_pager_form_options(&$form, &$form_state, &$view, $defaults, $dependency) {
  // Check for the library, prompt as necessary
  if (!($jq_path = _views_slideshow_jcarousel_library_path())) {
    $form['views_slideshow_jcarousel_not_found'] = array(
      '#markup' => '<div class="messages error">' . t('The jCarousel library was not found. Please extract the jCarousel package to sites/all/libraries/jcarousel, so that the javascript files are located at sites/all/libraries/jcarousel/lib. You can download the jCarousel package at !url', array('!url' => l('http://sorgalla.com/jcarousel/', 'http://sorgalla.com/jcarousel/',  array('attributes' => array('target' => '_blank'))))) . '</div>',
    );
  }
  // Settings for fields pager.
  $options = array();
  // Get each field and it's name.
  foreach ($view->display->handler->get_handlers('field') as $field => $handler) {
    $options[$field] = $handler->ui_name();
  }

  // Add ability to choose which fields to show in the pager.
  $form['views_slideshow_jcarousel_pager_fields'] = array(
    '#type' => 'checkboxes',
    '#title' => t('Pager fields'),
    '#options' => $options,
    '#default_value' => $defaults['views_slideshow_jcarousel_pager_fields'],
    '#description' => t("Choose the fields that will appear in the pager."),
    '#prefix' => '<div id="' . $dependency . '-views-slideshow-jcarousel-pager-fields-wrapper">',
    '#suffix' => '</div>',
    '#states' => array(
      'visible' => array(
        ':input[name="' . $dependency . '[enable]"]' => array('checked' => TRUE),
        ':input[name="' . $dependency . '[type]"]' => array('value' => 'views_slideshow_jcarousel_pager'),
      ),
    ),
  );

  // Add field to see if they would like the carousel to activate the pager item
  // on slide change.
  $form['views_slideshow_jcarousel_pager_move_on_change'] = array(
    '#type' => 'checkbox',
    '#title' => t('Move To Active Pager Item On Slide Change'),
    '#default_value' => $defaults['views_slideshow_jcarousel_pager_move_on_change'],
    '#description' => t('When the slide changes move the carousel to the active pager item.'),
    '#prefix' => '<div id="' . $dependency . '-views-slideshow-jcarousel-pager-move-on-change">',
    '#suffix' => '</div>',
    '#states' => array(
      'visible' => array(
        ':input[name="' . $dependency . '[enable]"]' => array('checked' => TRUE),
        ':input[name="' . $dependency . '[type]"]' => array('value' => 'views_slideshow_jcarousel_pager'),
      ),
    ),
  );

	$form['views_slideshow_jcarousel_pager_update_on_prev_next'] = array(
		'#type' => 'checkbox',
		'#title' => t('Make Previous/Next Buttons Update the Current Slide'),
		'#default_value' => $defaults['views_slideshow_jcarousel_pager_update_on_prev_next'],
		'#description' => t('Cycle the slideshow forward or backwards when the pager previous/next buttons are clicked'),
		'#prefix' => '<div id="' . $dependency . '-views-slideshow-jcarousel-pager-update-on-prev-next">',
		'#suffix' => '</div>',
		'#states' => array(
			'visible' => array(
				':input[name="' . $dependency . '[enable]"]' => array('checked' => TRUE),
				':input[name="' . $dependency . '[type]"]' => array('value' => 'views_slideshow_jcarousel_pager'),
			),
		),
	);

  $skin_directory = libraries_get_path('jcarousel') . '/skins';
  $skins = array();
  foreach (scandir($skin_directory) as $dir) {
    if ($dir !== '.' && $dir !== '..' && is_dir($skin_directory . '/' . $dir)) {
      $skins[$dir] = $dir;
    }
  }

  // Set the skin.
  $form['views_slideshow_jcarousel_pager_skin'] = array(
    '#type' => 'select',
    '#title' => t('jCarousel Skin'),
    '#options' => $skins,
    '#default_value' => $defaults['views_slideshow_jcarousel_pager_skin'],
    '#description' => t('Choose the skin for your carousel.  You can add more by placing your skin in the jcarousel library directory.'),
    '#prefix' => '<div id="' . $dependency . '-views-slideshow-jcarousel-pager-skin">',
    '#suffix' => '</div>',
    '#states' => array(
      'visible' => array(
        ':input[name="' . $dependency . '[enable]"]' => array('checked' => TRUE),
        ':input[name="' . $dependency . '[type]"]' => array('value' => 'views_slideshow_jcarousel_pager'),
      ),
    ),
  );

  // Set orientation of the pager.
  $form['views_slideshow_jcarousel_pager_orientation'] = array(
    '#type' => 'select',
    '#title' => t('Orientation of the Pager'),
    '#options' => array(
      FALSE => 'Horizontal',
      TRUE => 'Vertical',
    ),
    '#default_value' => $defaults['views_slideshow_jcarousel_pager_orientation'],
    '#description' => t('Should the pager be horizontal or vertical.'),
    '#prefix' => '<div id="' . $dependency . '-views-slideshow-jcarousel-pager-orientation">',
    '#suffix' => '</div>',
    '#states' => array(
      'visible' => array(
        ':input[name="' . $dependency . '[enable]"]' => array('checked' => TRUE),
        ':input[name="' . $dependency . '[type]"]' => array('value' => 'views_slideshow_jcarousel_pager'),
      ),
    ),
  );

  // Set the number of visible items.
  $form['views_slideshow_jcarousel_pager_visible'] = array(
    '#type' => 'textfield',
    '#title' => t('Number of Visible Pager Items'),
    '#default_value' => $defaults['views_slideshow_jcarousel_pager_visible'],
    '#description' => t('Set the number of pager items that are visible at a single time.'),
    '#size' => 10,
    '#prefix' => '<div id="' . $dependency . '-views-slideshow-jcarousel-pager-visible">',
    '#suffix' => '</div>',
    '#states' => array(
      'visible' => array(
        ':input[name="' . $dependency . '[enable]"]' => array('checked' => TRUE),
        ':input[name="' . $dependency . '[type]"]' => array('value' => 'views_slideshow_jcarousel_pager'),
      ),
    ),
  );

  // Set the number of items to scroll by.
  $form['views_slideshow_jcarousel_pager_scroll'] = array(
    '#type' => 'textfield',
    '#title' => t('Scroll'),
    '#default_value' => $defaults['views_slideshow_jcarousel_pager_scroll'],
    '#description' => t('The number of items to scroll by.'),
    '#size' => 10,
    '#prefix' => '<div id="' . $dependency . '-views-slideshow-jcarousel-pager-scroll">',
    '#suffix' => '</div>',
    '#states' => array(
      'visible' => array(
        ':input[name="' . $dependency . '[enable]"]' => array('checked' => TRUE),
        ':input[name="' . $dependency . '[type]"]' => array('value' => 'views_slideshow_jcarousel_pager'),
      ),
    ),
  );

  // animation speed
  $form['views_slideshow_jcarousel_pager_animation'] = array(
    '#type' => 'textfield',
    '#title' => t('Speed of the transition'),
    '#default_value' => $defaults['views_slideshow_jcarousel_pager_animation'],
    '#description' => t('Options are fast, slow or a number in milliseconds.'),
    '#size' => '10',
    '#prefix' => '<div id="' . $dependency . '-views-slideshow-jcarousel-pager-animation">',
    '#suffix' => '</div>',
    '#states' => array(
      'visible' => array(
        ':input[name="' . $dependency . '[enable]"]' => array('checked' => TRUE),
        ':input[name="' . $dependency . '[type]"]' => array('value' => 'views_slideshow_jcarousel_pager'),
      ),
    ),
  );

  // Wrap the carousel
  $form['views_slideshow_jcarousel_pager_wrap'] = array(
    '#type' => 'select',
    '#title' => t('Wrapping'),
    '#options' => array(
      NULL => 'Disabled',
      'circular' => 'Circular',
      'first' => 'First',
      'last' => 'Last',
      'both' => 'Both',
    ),
    '#default_value' => $defaults['views_slideshow_jcarousel_pager_wrap'],
    '#description' => t('Wrap the carousel.'),
    '#prefix' => '<div id="' . $dependency . '-views-slideshow-jcarousel-pager-wrap">',
    '#suffix' => '</div>',
    '#states' => array(
      'visible' => array(
        ':input[name="' . $dependency . '[enable]"]' => array('checked' => TRUE),
        ':input[name="' . $dependency . '[type]"]' => array('value' => 'views_slideshow_jcarousel_pager'),
      ),
    ),
  );
}

/**
 * Need to have preprocess functions here because drupal doesn't cache them
 * correctly in the theme.inc file.
 *
 * If you would like to override the preprocess functions make sure to look at
 * the associated function in theme.inc.
 */

// Trying to make sure the theme.inc get's loaded.
include_once 'theme/views_slideshow_jcarousel.theme.inc';

function template_preprocess_views_slideshow_jcarousel_pager(&$vars) {
  _views_slideshow_jcarousel_preprocess_pager($vars);
}

function template_preprocess_views_slideshow_jcarousel_pager_item(&$vars) {
  _views_slideshow_jcarousel_preprocess_pager_item($vars);
}