<?php
// $Id: beautytips_ui.module,v 1.2 2009-10-09 20:23:54 kleinmp Exp $

/**
 * @file
 * Adds includes to Beautytips settings page and provides some built in functionality.
 * TODO: hook_theme invoke - maybe
 * Invoked include hooks: admin_info, menu_change, theme_change, form_change, menu_items
 * ex.  beautytips_textinput_info
 */

function beautytips_ui_admin_settings(&$form) {
  $items = beautytips_ui_include_invoke('beautytips', 'admin_info', $args = NULL);
  if (is_array($items)) {
    foreach ($items as $form_item) {
      if (count($form_item)) {
        $keys = array_keys($form_item);
        if (count($keys)) {
          foreach ($keys as $menu_item) {
            $form[$menu_item] = $form_item[$menu_item];
          }
        }
      }
    }
  }
  $form['beautytips_styles'] = array(
    '#type' => 'radios',
    '#title' => t('Choose a style'),
    '#description' => t('Mouse over the radio buttons to see a preview.'),
    '#options' => array(
      'default' => t('default'),
      'netflix' => t('Netflix'),
      'facebook' => t('Facebook'),
      'transparent' => t('Transparent with Big Text'),
      'big_green' => t('Green with no border'),
      'google_maps' => t('Google Maps'),
    ),
    '#default_value' => variable_get('beautytips_styles', 'default'),
  );
  
  $path = drupal_get_path('module', 'beautytips') .'/js/bt_admin_page.js';
  drupal_add_js($path);
  beautytips_add_beautytips();
}

/**
 *  Clear menu cache and theme registry in case beautytips help tips turned on or off
 */
function beautytips_ui_admin_submit($form, $form_state) {
  variable_set('beautytips_always_add', $form_state['values']['beautytips_always_add']);
  module_invoke('menu', 'rebuild');
  cache_clear_all('*', 'cache_menu', TRUE);
  drupal_rebuild_theme_registry();
  beautytips_ui_set_style($form_state['values']['beautytips_styles']); 
}

/**
 * Implementation of hook_menu.
 */
function beautytips_ui_menu() {
  $items = array(); 

  $menu_items = beautytips_ui_include_invoke('beautytips', 'menu_items', $args = NULL);
  if (is_array($menu_items)) {
    foreach ($menu_items as $menu_item) {
      if (is_array($menu_item)) {
        $path = key($menu_item);
        $items[$path] = $menu_item[$path]; 
      }
    }
  } 
  return $items;
}

/**
 * Determine whether an include implements a hook, cf. module_hook.
 *
 * @param $tooltip
 *   The name of the tooltip file (without the .inc extension), such as 'youtube' or 'google'.
 * @param $hook
 *   The name of the hook (e.g. "thumbnail", "settings", etc.).
 * @return
 *   TRUE if the tooltip is loaded and the hook is implemented.
 */
function beautytips_ui_include_hook($module, $tooltip, $hook) {
  return function_exists($module .'_'. $tooltip .'_'. $hook);
}

/**
 * Invoke hook in a particular include.
 *
 * @param $module
 *  the helper module
 * @param $tooltip
 *   The name of the tooltip (without the .inc extension).
 * @param $hook
 *   The name of the hook (e.g. "menu_change", "form_change", etc.).
 * @param ...
 *   Arguments to pass to the hook implementation.
 * @return
 *   The return value of the hook implementation.
 */
function beautytips_ui_include_invoke($module, $hook, $args) {
  $includes = beautytips_ui_include_list();
  foreach ($includes as $tooltip) {
    $function = $module .'_'. $tooltip .'_'. $hook;
    $params[] = beautytips_ui_include_hook($module, $tooltip, $hook) ? call_user_func_array($function, $args) : NULL;
  }
  return $params;
}

/**
 * Maintains a list of all loaded include files.
 *
 * @param $file
 *   -------------------------
 * @return
 *   An array of all loaded includes. (w/o appended .inc)
 */
 // TODO: This may need to change - only unclude the items needed - maybe
function beautytips_ui_include_list() {
  static $list = array();
  $dir = drupal_get_path('module', 'beautytips') .'/includes';
  $files = file_scan_directory($dir, '.inc');
  foreach ($files as $file) {
    include_once('./'. $file->filename);
    $list[$file->filename] = $file->name;
  }

  return $list;
}

/**
 *  See jQuery.bt.js for descriptions of defaults
 *  Sets the default style for beautytips
 */
function beautytips_ui_set_style($style) {
  $bt_defaults = array();
  // The default style isn't necessarily needed here.
  switch ($style) {
    case 'default':
      $bt_defaults = array(
        'cssStyles' => array(),
      );
      break;
      
    case 'netflix':
      $bt_defaults = array(
        'positions' => array(0 => 'right', 1 => 'left'),
        'fill' => '#FFF',
        'padding' => 5,
        //'shadow' => true, //Reimplement shadow when issue is fixed
        //'shadowBlur' => 12,
        'strokeStyle' => '#B9090B',
        'spikeLength' => 50,
        'spikeGirth' => 60,
        'cornerRadius' => 10,
        'centerPointY' => .1,
        'overlap' => -8,
        'cssStyles' => array(
          'fontSize' => '12px',
          'fontFamily' => 'arial,helvetica,sans-serif',
        ),
      );
      break;

    case 'facebook':
      $bt_defaults = array(
        'fill' => '#F7F7F7',
        'padding' => 8,
        'strokeStyle' => '#B7B7B7',
        'cornerRadius' => 0,
        'cssStyles' => array(
          'fontFamily' => '"lucida grande",tahoma,verdana,arial,sans-serif', 
          'fontSize' => '11px',
        ),
      );
      break;
      
    case 'transparent':
      $bt_defaults = array(
        'fill' => 'rgba(0, 0, 0, .8)',
        'padding' => 20,
        'strokeStyle' => '#CC0',
        'strokeWidth' => 3,
        'spikeLength' => 40,
        'spikeGirth' => 40,
        'cornerRadius' => 40,
        'cssStyles' => array(
          'color' => '#FFF',
          'fontWeight' => 'bold',
        ),
      );
      break;
      
      case 'big_green':
        $bt_defaults = array(
          'fill' => '#00FF4E',
          'padding' => 20,
          'strokeWidth' => 0,
          'spikeLength' => 40,
          'spikeGirth' => 40,
          'cornerRadius' => 15,
          'cssStyles' => array(
            'fontFamily' => '"lucida grande",tahoma,verdana,arial,sans-serif', 
            'fontSize' => '14px',
          ),
        );
        break;
        
        case 'google_maps':
          $bt_defaults = array(
            'positions' => array(0 => 'top', 1 => 'bottom'),
            'fill' => '#FFF',
            'padding' => 15,
            'strokeStyle' => '#ABABAB',
            'strokeWidth' => 1,
            'spikeLength' => 65,
            'spikeGirth' => 40,
            'cornerRadius' => 25,
            'centerPointX' => .9,
            'cssStyles' => array(),
          );
          break;
  }   
  variable_set('beautytips_defaults', $bt_defaults);
}

/**
 * Implementation of hook_form_alter.
 * Adds beautytips for textareas and textfields
 */
function beautytips_ui_form_alter(&$form, $form_state, $form_id) {
  beautytips_ui_include_invoke('beautytips', 'form_change', array(
      'form' => &$form,
      'form_state' => $form_state,
      'form_id' => $form_id,
    )
  );    
}

/**
 * Implementation of hook_menu_alter().
 */
function beautytips_ui_menu_alter(&$items) {
  beautytips_ui_include_invoke('beautytips', 'menu_change', array('items' => &$items));
}

/**
 * Implementation of hook_theme_registry_alter().
 */
function beautytips_ui_theme_registry_alter(&$theme_registry) {
  beautytips_ui_include_invoke('beautytips', 'theme_change', array('theme_registry' => &$theme_registry));
}