<?php

/**
 * @file
 * Provides Slideshow style options for Views.
 */

/**
 * Implement hook_theme().
 */
function views_slideshow_theme($existing, $type, $theme, $path) {
  return array(
    'views_slideshow_main_section' => array(
      'variables' => array('vss_id' => NULL, 'slides' => NULL, 'plugin' => NULL),
      'file' => 'theme/views_slideshow.theme.inc',
    ),
    'views_slideshow_pager_widget_render' => array(
      'variables' => array('vss_id' => NULL, 'view' => NULL, 'settings' => array(), 'location' => NULL, 'rows' => array()),
      'file' => 'theme/views_slideshow.theme.inc',
    ),
    'views_slideshow_pager_fields' => array(
      'variables' => array('vss_id' => NULL, 'view' => NULL, 'settings' => array(), 'location' => NULL, 'attributes' => array()),
      'template' => 'theme/views-slideshow-pager-fields',
    ),
    'views_slideshow_pager_field_field' => array(
      'variables' => array('view' => NULL, 'field' => NULL, 'count' => NULL),
      'template' => 'theme/views-slideshow-pager-field-field',
      'file' => 'theme/views_slideshow.theme.inc',
    ),
    'views_slideshow_pager_field_item' => array(
      'variables' => array('vss_id' => NULL, 'item' => NULL, 'count' => NULL, 'location' => NULL),
      'template' => 'theme/views-slideshow-pager-field-item',
    ),
    'views_slideshow_controls_widget_render' => array(
      'variables' => array('vss_id' => NULL, 'view' => NULL, 'settings' => array(), 'location' => NULL, 'rows' => array()),
      'file' => 'theme/views_slideshow.theme.inc',
    ),
    'views_slideshow_controls_text' => array(
      'variables' => array('vss_id' => NULL, 'view' => NULL, 'settings' => array(), 'location' => NULL, 'rows' => array()),
      'template' => 'theme/views-slideshow-controls-text',
    ),
    'views_slideshow_controls_text_previous' => array(
      'variables' => array('vss_id' => NULL, 'view' => NULL, 'settings' => array()),
      'template' => 'theme/views-slideshow-controls-text-previous',
    ),
    'views_slideshow_controls_text_pause' => array(
      'variables' => array('vss_id' => NULL, 'view' => NULL, 'settings' => array()),
      'template' => 'theme/views-slideshow-controls-text-pause',
    ),
    'views_slideshow_controls_text_next' => array(
      'variables' => array('vss_id' => NULL, 'view' => NULL, 'settings' => array()),
      'template' => 'theme/views-slideshow-controls-text-next',
    ),
    'views_slideshow_slide_counter_widget_render' => array(
      'variables' => array('vss_id' => NULL, 'view' => NULL, 'settings' => array(), 'location' => NULL, 'rows' => array()),
      'file' => 'theme/views_slideshow.theme.inc',
    ),
    'views_slideshow_slide_counter' => array(
      'variables' => array('vss_id' => NULL, 'view' => NULL, 'settings' => array(), 'location' => NULL, 'rows' => array()),
      'template' => 'theme/views-slideshow-slide-counter',
    ),
  );
}

/**
 * Implements hook_views_api().
 */
function views_slideshow_views_api() {
  return array(
    'api' => '3',
  );
}

/**
 * Implements hook_help().
 */
function views_slideshow_help($path, $arg) {
  switch ($path) {
    case 'admin/help#views_slideshow':
      return '<p>Check the Views Slideshow project page documentation for tutorials and videos on how to use this module.</p>';
  }
}

/**
 * Implements hook_init().
 */
function views_slideshow_init() {
  // Load javascript on the page in init to help fool caching.
  drupal_add_js(drupal_get_path('module', 'views_slideshow') . '/js/views_slideshow.js');

  $vs_path = drupal_get_path('module', 'views_slideshow');
  drupal_add_css($vs_path . '/views_slideshow.css');
}

/**
 * Implementation of hook_views_slideshow_skin_info().
 */
function views_slideshow_views_slideshow_skin_info() {
  return array(
    'default' => array(
      'name' => t('Default'),
    ),
  );
}

/**
 * Implements hook_views_slideshow_widget_info().
 */
function views_slideshow_views_slideshow_widget_info() {
  return array(
    'views_slideshow_pager' => array(
      'name' => t('Pager'),
      'accepts' => array(
        'transitionBegin' => array('required' => TRUE),
        'goToSlide',
        'previousSlide',
        'nextSlide',
      ),
      'calls' => array(
        'goToSlide',
        'pause',
        'play',
      ),
    ),
    'views_slideshow_controls' => array(
      'name' => t('Controls'),
      'accepts' => array(
        'pause' => array('required' => TRUE),
        'play' => array('required' => TRUE),
      ),
      'calls' => array(
        'nextSlide',
        'pause',
        'play',
        'previousSlide',
      ),
    ),
    'views_slideshow_slide_counter' => array(
      'name' => t('Slide Counter'),
      'accepts' => array(
        'transitionBegin' => array('required' => TRUE),
        'goToSlide',
        'previousSlide',
        'nextSlide',
      ),
      'calls' => array(),
    ),
  );
}

/**
 * Implements [widget]_views_slideshow_widget_form_options().
 */
function views_slideshow_pager_views_slideshow_widget_form_options(&$form, &$form_state, &$view, $defaults, $dependency) {
  // Get all the pager info from other modules.
  // hook_views_slideshow_pager_info($view, $option_values, $dependency_prefix)
  $pagers = module_invoke_all('views_slideshow_widget_pager_info', $view);

  if (!empty($pagers)) {
    $pager_options = array();
    foreach($pagers as $pager_id => $pager_info) {
      $pager_options[$pager_id] = $pager_info['name'];
    }
    asort($pager_options);

    // Need to wrap this so it indents correctly.
    $form['views_slideshow_pager_wrapper'] = array(
      '#markup' => '<div class="vs-dependent">',
    );

    // Add field to see if they would like to hide pager if there is only one
    // slide.
    $form['hide_on_single_slide'] = array(
      '#type' => 'checkbox',
      '#title' => t('Hide pager if there is only one slide'),
      '#default_value' => $defaults['hide_on_single_slide'],
      '#description' => t('Should the pager be hidden if there is only one slide.'),
      '#states' => array(
        'visible' => array(
          ':input[name="' . $dependency . '[enable]"]' => array('checked' => TRUE),
        ),
      ),
    );

    // Create the widget type field.
    $form['type'] = array(
      '#type' => 'select',
      '#title' => t('Pager Type'),
      '#description' => t('Style of the pager'),
      '#default_value' => $defaults['type'],
      '#options' => $pager_options,
      '#states' => array(
        'visible' => array(
          ':input[name="' . $dependency . '[enable]"]' => array('checked' => TRUE),
        ),
      ),
    );
  
    // Add any additional form elements
    // Build our arguments to pass to
    // [pager-type]_views_slideshow_widget_pager_form_options
    $arguments = array(
      &$form,
      &$form_state,
      &$view,
      $defaults,
      $dependency,
    );

    foreach ($pagers as $pager_key => $pager_info) {
      $function = $pager_key . '_views_slideshow_widget_pager_form_options';
      if (function_exists($function)) {
        call_user_func_array($function, $arguments);
      }
    }
    
    $form['views_slideshow_pager_wrapper_close'] = array(
      '#markup' => '</div>',
    );
  }
  else {
    $form['enable_pager'] = array(
      '#markup' => 'There are no pagers available.',
    );
  }
}

/**
 * Implementation of hook_views_slideshow_widget_pager_info
 */
function views_slideshow_views_slideshow_widget_pager_info($view) {
  $settings = array();
  // Settings for fields pager.
  // First verfiy that the view is using fields.
  if ($view->row_plugin->uses_fields()) {
    $settings = array(
      'views_slideshow_pager_fields' => array(
        'name' => t('Fields'),
      ),
    );
  }

  return $settings;
}

/**
 * Implementation [widget-type]_views_slideshow_pager_form_options
 */
function views_slideshow_pager_fields_views_slideshow_widget_pager_form_options(&$form, &$form_state, &$view, $defaults, $dependency) {
  // 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();
  }
  // Need to wrap this so it indents correctly.
  $form['views_slideshow_pager_fields_wrapper'] = array(
    '#markup' => '<div class="vs-dependent">',
  );
  // Add ability to choose which fields to show in the pager.
  $form['views_slideshow_pager_fields_fields'] = array(
    '#type' => 'checkboxes',
    '#title' => t('Pager fields'),
    '#options' => $options,
    '#default_value' => $defaults['views_slideshow_pager_fields_fields'],
    '#description' => t("Choose the fields that will appear in the pager."),
    '#process' => array(
      'form_process_checkboxes',
    ),
    '#states' => array(
      'visible' => array(
        ':input[name="' . $dependency . '[enable]"]' => array('checked' => TRUE),
        ':input[name="' . $dependency . '[type]"]' => array('value' => 'views_slideshow_pager_fields'),
      ),
    ),
  );

  // Add field to see if they would like to activate slide and pause on pager
  // hover
  $form['views_slideshow_pager_fields_hover'] = array(
    '#type' => 'checkbox',
    '#title' => t('Activate Slide and Pause on Pager Hover'),
    '#default_value' => $defaults['views_slideshow_pager_fields_hover'],
    '#description' => t('Should the slide be activated and paused when hovering over a pager item.'),
    '#states' => array(
      'visible' => array(
        ':input[name="' . $dependency . '[enable]"]' => array('checked' => TRUE),
        ':input[name="' . $dependency . '[type]"]' => array('value' => 'views_slideshow_pager_fields'),
      ),
    ),
  );

  $form['views_slideshow_pager_fields_wrapper_close'] = array(
    '#markup' => '</div>',
  );
}

/**
 * Implements [widget]_views_slideshow_widget_form_options().
 */
function views_slideshow_controls_views_slideshow_widget_form_options(&$form, &$form_state, &$view, $defaults, $dependency) {
  // Get all the control info from other modules.
  // hook_views_slideshow_controls_settings($view, $option_values, $dependency_prefix)
  $controls = module_invoke_all('views_slideshow_widget_controls_info', $view);

  if (!empty($controls)) {
    $control_type_options = array();
    foreach($controls as $control_id => $control_info) {
      $control_type_options[$control_id] = $control_info['name'];
    }
    asort($control_type_options);

    // Need to wrap this so it indents correctly.
    $form['views_slideshow_controls_wrapper'] = array(
      '#markup' => '<div class="vs-dependent">',
    );
    
    // Add field to see if they would like to hide controls if there is only one
    // slide
    $form['hide_on_single_slide'] = array(
      '#type' => 'checkbox',
      '#title' => t('Hide controls if there is only one slide'),
      '#default_value' => $defaults['hide_on_single_slide'],
      '#description' => t('Should the controls be hidden if there is only one slide.'),
      '#states' => array(
        'visible' => array(
          ':input[name="' . $dependency . '[enable]"]' => array('checked' => TRUE),
        ),
      ),
    );

    // Create the widget type field.
    $form['type'] = array(
      '#type' => 'select',
      '#title' => t('Controls Type'),
      '#description' => t('Style of the controls'),
      '#default_value' => $defaults['type'],
      '#options' => $control_type_options,
      '#states' => array(
        'visible' => array(
          ':input[name="' . $dependency . '[enable]"]' => array('checked' => TRUE),
        ),
      ),
    );

    // Add any additional form elements
    // Build our arguments to pass to
    // [pager-type]_views_slideshow_widget_pager_form_options
    $arguments = array(
      &$form,
      &$form_state,
      &$view,
      $defaults,
      $dependency,
    );

    foreach ($controls as $control_key => $control_info) {
      $function = $control_key . '_views_slideshow_widget_controls_form_options';
      if (function_exists($function)) {
        call_user_func_array($function, $arguments);
      }
    }

    $form['controls_wrapper_close'] = array(
      '#markup' => '</div>',
    );
  }
  else {
    $form['enable_controls'] = array(
      '#markup' => 'There are no controls available.',
    );
  }
}

/**
 * Implementation of hook_views_slideshow_controls_info
 */
function views_slideshow_views_slideshow_widget_controls_info($view) {
  return array(
    'views_slideshow_controls_text' => array(
      'name' => t('Text'),
    )
  );
}

/**
 * Implements hook_views_slideshow_option_definition.
 */
function views_slideshow_views_slideshow_option_definition() {

  // Default slideshow type and skins
  $options['slideshow_type'] = array('default' => '');
  $options['slideshow_skin'] = array('default' => '');
  $options['skin_info'] = array(
    'default' => array(
      'class' => 'default',
      'name' => t('Untitled skin'),
      'module' => 'views_slideshow',
      'path' => '',
      'stylesheets' => array(),
    ),
  );

  // Set default widgets and weight values.
  $widgets = module_invoke_all('views_slideshow_widget_info');
  if ($widgets) {
    $locations = array('top', 'bottom');
    foreach ($locations as $location) {
      foreach ($widgets as $widget_id => $widget_name) {
        $options['widgets']['contains'][$location]['contains'][$widget_id]['contains']['enable'] = array('default' => 0);
        $options['widgets']['contains'][$location]['contains'][$widget_id]['contains']['weight'] = array('default' => 1);
      }
    }
  }

  // Defaults for the pager widget.
  foreach ($locations as $location) {
    $options['widgets']['contains'][$location]['contains']['views_slideshow_pager']['contains']['hide_on_single_slide'] = array('default' => 0);
    $options['widgets']['contains'][$location]['contains']['views_slideshow_pager']['contains']['type'] = array('default' => 0);
    $options['widgets']['contains'][$location]['contains']['views_slideshow_pager']['contains']['views_slideshow_pager_numbered_hover'] = array('default' => 0);
    $options['widgets']['contains'][$location]['contains']['views_slideshow_pager']['contains']['views_slideshow_pager_numbered_click_to_page'] = array('default' => 0);
    $options['widgets']['contains'][$location]['contains']['views_slideshow_pager']['contains']['views_slideshow_pager_thumbnails_hover'] = array('default' => 0);
    $options['widgets']['contains'][$location]['contains']['views_slideshow_pager']['contains']['views_slideshow_pager_thumbnails_click_to_page'] = array('default' => 0);
    $options['widgets']['contains'][$location]['contains']['views_slideshow_pager']['contains']['views_slideshow_pager_fields_fields'] = array('default' => array());
    $options['widgets']['contains'][$location]['contains']['views_slideshow_pager']['contains']['views_slideshow_pager_fields_hover'] = array('default' => 0);

    $options['widgets']['contains'][$location]['contains']['views_slideshow_controls']['contains']['hide_on_single_slide'] = array('default' => 0);
    $options['widgets']['contains'][$location]['contains']['views_slideshow_controls']['contains']['type'] = array('default' => 0);
  }

  return $options;
}

/**
 * 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.theme.inc');

function template_preprocess_views_slideshow(&$vars) {
  _views_slideshow_preprocess_views_slideshow($vars);
}

function template_preprocess_views_slideshow_pager_fields(&$vars) {
  _views_slideshow_preprocess_views_slideshow_pager_fields($vars);
}

function template_preprocess_views_slideshow_pager_field_item(&$vars) {
  _views_slideshow_preprocess_views_slideshow_pager_field_item($vars);
}

function template_preprocess_views_slideshow_controls_text(&$vars) {
  _views_slideshow_preprocess_views_slideshow_controls_text($vars);
}

function template_preprocess_views_slideshow_controls_text_previous(&$vars) {
  _views_slideshow_preprocess_views_slideshow_controls_text_previous($vars);
}

function template_preprocess_views_slideshow_controls_text_pause(&$vars) {
  _views_slideshow_preprocess_views_slideshow_controls_text_pause($vars);
}

function template_preprocess_views_slideshow_controls_text_next(&$vars) {
  _views_slideshow_preprocess_views_slideshow_controls_text_next($vars);
}

function template_preprocess_views_slideshow_slide_counter(&$vars) {
  _views_slideshow_preprocess_views_slideshow_slide_counter($vars);
}