<?php
// $Id: collapsiblock.module,v 1.7 2011-01-24 03:33:24 gagarine Exp $

/**
 * @file
 * Make blocks collapsible.
 */

/**
 * Implements hook_init().
 */
function collapsiblock_init() {
  collapsiblock_load();
}

/**
 * Implements hook_menu().
 */
function collapsiblock_menu() {
  $items = array();

  $items['admin/config/collapsiblock'] = array(
    'title' => 'Collapsiblock',
    'description' => 'Configuration for collapsible blocks',
    'page callback' => 'drupal_get_form',
    'page arguments' => array('collapsiblock_admin_settings'),
    'access arguments' => array('administer site configuration'),
  );

  return $items;
}

/**
 * Admin settings.
 */
function collapsiblock_admin_settings($form, &$form_state) {
  $form = array();
  $form['collapsiblock_help'] = array(
    '#type' => 'item',
    '#value' => t('Change selectors from <a href="!url">Themes configuration</a>.', array('!url' => url('admin/appearance/settings'))),
  );

  $form['collapsiblock_default_state'] = array(
    '#type' => 'radios',
    '#title' => t('Default block collapse behavior'),
    '#options' => array(1 => t('None.'), 2 => t('Collapsible, expanded by default.'), 3 => t('Collapsible, collapsed by default.'), 4 => t('Collapsible, collapsed all the time.')),
    '#default_value' => variable_get('collapsiblock_default_state', 1),
  );
  $form['collapsiblock_slide_type'] = array(
    '#type' => 'radios',
    '#title' => t('Default animation type'),
    '#options' => array(1 => t('Slide'), 2 => t('Fade and slide')),
    '#description' => t('Slide is the Drupal default while Fade and slide adds a nice fade effect.'),
    '#default_value' => variable_get('collapsiblock_slide_type', 1),
  );
  $form['collapsiblock_slide_speed'] = array(
    '#type' => 'select',
    '#title' => t('Animation speed'),
    '#options' => drupal_map_assoc(array('50', '100', '200', '300', '400', '500', '700', '1000', '1300')),
    '#description' => t('The animation speed in milliseconds.'),
    '#default_value' => variable_get('collapsiblock_slide_speed', 200),
  );
  $form = system_settings_form($form);
  return $form;
}

/**
 * Load needed files.
 */
function collapsiblock_load() {
  // ERROR: return statement not found in hook_load
  // TODO: Name the variable $xx_missing_xx which was missing in the old function signature.
  static $loaded = FALSE;
  if (!$loaded) {
    global $theme;
    $current_theme = $theme ? $theme : variable_get('theme_default', 'garland');
    $collapsiblock_path = drupal_get_path('module', 'collapsiblock');
    $theme_settings = variable_get(str_replace('/', '_', 'theme_' . $current_theme . '_settings'),array());
    $theme_settings = array_merge(collapsiblock_default_settings(), $theme_settings, array());
    drupal_add_js(drupal_get_path('module', 'collapsiblock') . '/collapsiblock.js',array('type'=>'file','scope'=>'footer','every_page'=>'TRUE'));
    //drupal_add_js(drupal_get_path('module', 'jstools') . '/jquery.cookie.js');
    drupal_add_js(array(
        'collapsiblock' => array(
            'blocks' => variable_get('collapsiblock_settings', array()),
            'default_state' => variable_get('collapsiblock_default_state', 1),
            'slide_type' => variable_get('collapsiblock_slide_type', 1),
            'slide_speed' => variable_get('collapsiblock_slide_speed', 200),
            'block_title' => $theme_settings['collapsiblock_title'],
            'block' => $theme_settings['collapsiblock_block'],
            'block_content' => $theme_settings['collapsiblock_content'],
            )), array('type' => 'setting'
    , 'scope' => JS_DEFAULT));
    drupal_add_css($collapsiblock_path . '/collapsiblock.css');
    $loaded = TRUE;
  }
}

/**
 * Default theme's settings
 */
function collapsiblock_default_settings() {
  $defaults = array(
  'collapsiblock_block' => 'div.block',
  'collapsiblock_content' => 'div.content',
  'collapsiblock_title' => ':header:first',
  );
  return $defaults;
}

/**
 * Implements hook_form_alter().
 */
function collapsiblock_form_alter(&$form, $form_state, $form_id) {

  if ($form_id == 'system_theme_settings') {
    
    $settings = variable_get($form['var']['#value'],array());
    $settings = array_merge(collapsiblock_default_settings(), $settings, array());
    
    $form['collapsiblock'] = array(
        '#type' => 'fieldset',
        '#title' => t('Collapsiblock selectors'),
        '#description' => t("Force <a href='http://api.jquery.com/category/selectors/'>CSS selector</a> if collapsiblock doesn't work out of the box"),
        '#weight' => 0,
        '#attributes' => array('id' => 'collapsiblock_form'),
    );
    $form['collapsiblock']['collapsiblock_block'] = array(
        '#type' => 'textfield',
        '#title' => t('Block'),
        '#default_value' => $settings['collapsiblock_block'],
    );
    $form['collapsiblock']['collapsiblock_title'] = array(
        '#type' => 'textfield',
        '#title' => t('Title'),
        '#default_value' => $settings['collapsiblock_title'],
    );

    $form['collapsiblock']['collapsiblock_content'] = array(
        '#type' => 'textfield',
        '#title' => t('Block content'),
        '#default_value' => $settings['collapsiblock_content'],
    );
  }

  if ($form_id == 'block_admin_configure') {
    $settings = variable_get('collapsiblock_settings', array());
    $form['#submit'][] = 'collapsiblock_submit';
    $form['collapsiblock'] = array(
      '#type' => 'fieldset',
      '#title' => t('Collapsible'),
      '#collapsible' => TRUE,
      '#weight' => -5
    );
    $form['collapsiblock']['collapse_type'] = array(
      '#type' => 'radios',
      '#title' => t('Block collapse behavior'),
      '#options' => array(1 => t('None.'), 2 => t('Collapsible, expanded by default.'), 3 => t('Collapsible, collapsed by default.'), 4 => t('Collapsible, collapsed all the time.')),
      '#default_value' => $settings['block-' . $form['module']['#value'] . '-' . $form['delta']['#value']] ? $settings['block-' . $form['module']['#value'] . '-' . $form['delta']['#value']] : variable_get('collapsiblock_default_state', 1),
    );
  }
}

/**
 * Form submission handler for block_admin_configure().
 *
 * @see block_admin_configure()
 * @see collapsiblock_form_alter()
 */
function collapsiblock_submit($form, &$form_state) {
  $settings = variable_get('collapsiblock_settings', array());
  $settings['block-' . $form_state['values']['module'] . '-' . $form_state['values']['delta']] = $form_state['values']['collapse_type'];
  variable_set('collapsiblock_settings', $settings);
}