<?php
// $Id: themekey_admin.inc,v 1.8 2009-10-01 14:36:54 mkalkbrenner Exp $

require_once(drupal_get_path('module', 'themekey') .'/themekey_build.inc');

define('THEMEKEY_PAGER_LENGTH', 25);

/**
 * Function _themekey_paths_form().
 */
function _themekey_paths_form() {

  _themekey_admin_theme_warning();

  $form['paths'] = array(
    '#type' => 'fieldset',
    '#title' => t('Paths'),
    '#collapsible' => FALSE,
    '#collapsed' => FALSE,
    '#description' => t(
'Here you can map themes to Drupal paths or path aliases. To add a new map entry to the table,
enter the path into the \'Path\' field and select a theme from the \'Theme\' dropdown. For example:
Path = \'node/add\' and Theme = \'Bluemarine\' switches the theme of the \'Create content\' page to
Bluemarine. You may also use wildcard characters in the path and/or specify \'Conditions\' to match.<br />
Wildcard characters are \'#\' for numeric parts and \'%\' for all characters. To match conditions
against a certain part, use an identifier with the wildcard. For example: Path =
\'comment/reply/#xyz\' matches all paths with \'comment/reply\' and a numeric third argument.
You can then specify conditions for every wildcard argument using the following syntax:
\'id=value;id2=value2;...\', e.g. \'xyz=123\'. Supported operators are \'=\' (equal), \'!\' (not equal),
\'<\' (smaller) and \'>\' (greater).'),
  );

  $form['paths']['table'] = array(
    '#theme' => 'themekey_table',
    '#header' => array(t('Path'), t('Conditions'), t('Theme')),
    '#tree' => TRUE
  );

  $themes = _themekey_theme_options();
  $paths = _themekey_load_paths(THEMEKEY_PAGER_LENGTH);
  foreach ($paths as $path) {
    $form['paths']['table'][$path['id']]['path'] = array(
      '#type' => 'textfield',
      '#default_value' => $path['path'],
      '#size' => 40,
      '#maxlength' => 255
    );
    $form['paths']['table'][$path['id']]['conditions'] = array(
      '#type' => 'textfield',
      '#default_value' => $path['conditions'],
      '#size' => 20,
      '#maxlength' => 255
    );
    $form['paths']['table'][$path['id']]['theme'] = array(
      '#type' => 'select',
      '#default_value' => $path['theme'],
      '#options' => $themes
    );

    if (!_themekey_check_theme_enabled($path['theme'], TRUE)) {
      $form['paths']['table'][$path['id']]['theme']['#attributes'] = array('class' => 'error');
    }
  }

  if (count($paths)) {
    $form['paths']['pager'] = array('#value' => theme('pager', array(), THEMEKEY_PAGER_LENGTH));
  }

  $form['paths']['addtable'] = array(
    '#theme' => 'themekey_table',
    '#header' => array(t('Path'), t('Conditions'), t('Theme')),
    '#tree' => TRUE
  );
  $form['paths']['addtable']['add']['path'] = array(
    '#type' => 'textfield',
    '#default_value' => '',
    '#size' => 40,
    '#maxlength' => 255
  );
  $form['paths']['addtable']['add']['conditions'] = array(
    '#type' => 'textfield',
    '#default_value' => '',
    '#size' => 20,
    '#maxlength' => 255
  );
  $form['paths']['addtable']['add']['theme'] = array(
    '#type' => 'select',
    '#default_value' => 'default',
    '#options' => $themes
  );

  return _themekey_admin_form($form, '_themekey_paths');
}

/**
 * Function _themekey_paths_submit().
 */
function _themekey_paths_submit($form, &$form_state) {
  if (isset($form_state['values']['table'])) {
    foreach ($form_state['values']['table'] as $id => $item) {
      if (empty($item['path'])) {
        _themekey_path_del($id);
      }
      else {
        $item['id'] = $id;
        _themekey_path_set($item);
      }
    }
  }
  //
  if (!empty($form_state['values']['addtable']['add']['path'])) {
    _themekey_path_set($form_state['values']['addtable']['add']);
  }

  drupal_set_message(t('The configuration options have been saved.'));
}

/**
 * Function _themekey_paths_reset().
 */
function _themekey_paths_reset($form, &$form_state) {
  _themekey_path_clear();
  drupal_set_message(t('The configuration has been reset to defaults.'));
}

/**
 * Function _themekey_properties_form().
 */
function _themekey_properties_form() {

  _themekey_admin_theme_warning();

  $form['properties'] = array(
    '#type' => 'fieldset',
    '#title' => t('Properties'),
    '#collapsible' => FALSE,
    '#collapsed' => FALSE,
    '#description' => t(
'Here you can map themes to object properties, e.g. to node properties such as the NodeID (nid).
To add a new map entry to the table, select a property from the \'Property\' dropdown and enter
the value which you want to assign the theme to. For example: Property = \'nid\', Value = \'123\'
and Theme = \'Bluemarine\' switches the theme of node 123 to Bluemarine. You may also specify
\'Additional Conditions\' so that the theme only applies when all conditions are matched. \'Additional
Conditions\' must be provided using the following syntax: \'property=value;property2=value2;...\'.
Supported operators are \'=\' (equal), \'!\' (not equal), \'<\' (smaller) and \'>\' (greater).'),
  );

  $form['properties']['table'] = array(
    '#theme' => 'themekey_table',
    '#header' => array(t('Property'), t('Value'), t('Additional Conditions'), t('Theme')),
    '#tree' => TRUE
  );

  $themes = _themekey_theme_options();
  $properties = array_keys(variable_get('themekey_properties', array()));
  if (count($properties)) {
    $config = array();
    foreach ($properties as $property) {
      $config[$property] = $property;
    }
    ksort($config);
    $properties = _themekey_load_properties(THEMEKEY_PAGER_LENGTH, FALSE);
    foreach ($properties as $property) {
      $form['properties']['table'][$property['id']]['property'] = array(
        '#type' => 'select',
        '#title' => '',
        '#default_value' => $property['property'],
        '#options' => $config
      );
      $form['properties']['table'][$property['id']]['value'] = array(
        '#type' => 'textfield',
        '#default_value' => $property['value'],
        '#size' => 25,
        '#maxlength' => 255
      );
      $form['properties']['table'][$property['id']]['conditions'] = array(
        '#type' => 'textfield',
        '#default_value' => $property['conditions'],
        '#size' => 35,
        '#maxlength' => 255
      );
      $form['properties']['table'][$property['id']]['theme'] = array(
        '#type' => 'select',
        '#default_value' => $property['theme'],
        '#options' => $themes,
      );

      if (!_themekey_check_theme_enabled($property['theme'], TRUE)) {
        $form['properties']['table'][$property['id']]['theme']['#attributes'] = array('class' => 'error');
      }
    }

    if (count($properties)) {
      $form['properties']['pager'] = array('#value' => theme('pager', array(), THEMEKEY_PAGER_LENGTH));
    }

    $form['properties']['addtable'] = array(
      '#theme' => 'themekey_table',
      '#header' => array(t('Property'), t('Value'), t('Additional Conditions'), t('Theme')),
      '#tree' => TRUE
    );
    $form['properties']['addtable']['add']['property'] = array(
      '#type' => 'select',
      '#title' => '',
      '#default_value' => '',
      '#options' => $config
    );
    $form['properties']['addtable']['add']['value'] = array(
      '#type' => 'textfield',
      '#default_value' => '',
      '#size' => 25,
      '#maxlength' => 255
    );
    $form['properties']['addtable']['add']['conditions'] = array(
      '#type' => 'textfield',
      '#default_value' => '',
      '#size' => 35,
      '#maxlength' => 255
    );
    $form['properties']['addtable']['add']['theme'] = array(
      '#type' => 'select',
      '#title' => '',
      '#default_value' => 'default',
      '#options' => $themes
    );
  }
  else {
    $message = t('Please visit the <a href="@url">ThemeKey settings</a> tab first and enable at least one
                  property for selection', array('@url' => url('admin/settings/themekey/settings')));
    drupal_set_message($message, 'error');
  }

  return _themekey_admin_form($form, '_themekey_properties');
}

/**
 * Function _themekey_properties_submit().
 */
function _themekey_properties_submit($form, &$form_state) {
  if (isset($form_state['values']['table'])) {
    foreach ($form_state['values']['table'] as $id => $item) {
      if (empty($item['value'])) {
        _themekey_properties_del($id);
      }
      else {
        $item['id'] = $id;
        _themekey_properties_set($item);
      }
    }
  }
  //
  if (!empty($form_state['values']['addtable']['add']['value'])) {
    _themekey_properties_set($form_state['values']['addtable']['add']);
  }

  drupal_set_message(t('The configuration options have been saved.'));
}

/**
 * Function _themekey_properties_reset().
 */
function _themekey_properties_reset($form, &$form_state) {
  _themekey_properties_clear();
  drupal_set_message(t('The configuration has been reset to defaults.'));
}

/**
 * Function _themekey_settings_form().
 */
function _themekey_settings_form() {
  //
  _themekey_rebuild();

  //
  $form['settings'] = array(
    '#type' => 'fieldset',
    '#title' => t('General Settings'),
    '#collapsible' => FALSE,
    '#collapsed' => FALSE
  );
  $form['settings']['themekey_allthemes'] = array(
    '#type' => 'checkbox',
    '#title' => t('Provide all themes for selection'),
    '#default_value' => variable_get('themekey_allthemes', 1),
    '#description' => t('Make all installed themes available for selection, not enabled ones only.')
  );
  $form['settings']['themekey_theme_maintain'] = array(
    '#type' => 'checkbox',
    '#title' => t('Retain the theme until a new theme is set'),
    '#default_value' => variable_get('themekey_theme_maintain', 0),
    '#description' => t('Select this option to have users stay in the same theme until they
                         browse to a new page with an explicit theme set.')
  );
  $nodediscover = variable_get('themekey_nodediscover', 0);
  $form['settings']['themekey_nodediscover'] = array(
    '#type' => 'checkbox',
    '#title' => t('Discover all node properties for selection'),
    '#default_value' => $nodediscover,
    '#description' => t('Allows you to assign themes to node properties (e.g. type, status, uid, ...).')
  );

  $form['settings']['properties'] = array(
    '#type' => 'fieldset',
    '#title' => t('Properties'),
    '#collapsible' => TRUE,
    '#collapsed' => FALSE
  );
  $form['settings']['properties']['table'] = array(
    '#theme' => 'themekey_table',
    '#header' => array(t('Property'), t('Description'), t('Enabled'), t('Weight'), ''),
    '#tree' => TRUE
  );
  //
  $config = variable_get('themekey_properties', array());
  $attributes = variable_get('themekey_attributes', array());
  $properties = _themekey_properties_discover($nodediscover);
  foreach ($properties as $property => $path) {
    $properties[$property] = array('path' => $path,
                                   'property' => $property,
                                   'enabled' => isset($config[$property]),
                                   'weight' => isset($config[$property]) ? $config[$property]['weight']: 0);
  }
  //
  uasort($properties, '_themekey_properties_cmp');
  foreach ($properties as $property => $details) {
    $form['settings']['properties']['table'][$property]['property'] = array(
      '#value' => $property
    );
    $form['settings']['properties']['table'][$property]['description'] = array(
      '#value' => isset($attributes[$property]['description']) ? $attributes[$property]['description'] : '-',
    );
    $form['settings']['properties']['table'][$property]['enabled'] = array(
      '#type' => 'checkbox',
      '#title' => '',
      '#default_value' => $details['enabled']
    );
    $form['settings']['properties']['table'][$property]['weight'] = array(
      '#type' => 'weight',
      '#title' => '',
      '#default_value' => $details['weight']
    );
    $form['settings']['properties']['table'][$property]['path'] = array(
      '#type' => 'hidden',
      '#value' => $details['path']
    );
  }
  //
  if (isset($properties['nid']) && $properties['nid']['enabled']) {
    $form['settings']['additional']['themekey_nodeaspath'] = array(
      '#type' => 'select',
      '#title' => t('Node theme preference'),
      '#options' => array(
        0 => t('Property-based'),
        1 => t('Path-based')
      ),
      '#default_value' => variable_get('themekey_nodeaspath', 0),
      '#description' => t('By default node themes are stored as nid property values. If you are working with path aliases it might be
                           better to store them as paths. You should not change this settings once you have existing items.')
    );
    if (_themekey_num_paths() > 0) {
      $warning  = '<br /><strong class="error">';
      $warning .= t('WARNING: Do not change this settings or you will get duplicate (mixed) assignment to paths and properties.');
      $warning .= '</strong>';
      $form['settings']['additional']['themekey_nodeaspath']['#description'] .= $warning;
    }
  }
  //
  if (isset($form['settings']['additional']) && count($form['settings']['additional'])) {
    $form['settings']['additional'] += array(
      '#type' => 'fieldset',
      '#title' => t('Additional Settings'),
      '#collapsible' => TRUE,
      '#collapsed' => FALSE
    );
  }

  return _themekey_admin_form($form, '_themekey_settings', FALSE);
}

/**
 * Function _themekey_settings_submit().
 */
function _themekey_settings_submit($form, &$form_state) {
  $properties = array();
  if (isset($form_state['values']['table'])) {
    foreach ($form_state['values']['table'] as $property => $details) {
      if ($details['enabled']) {
        $properties[$property] = array('path' => $details['path'], 'weight' => $details['weight']);
      }
    }
    unset($form_state['values']['table']);
  }
  //
  $properties_old = variable_get('themekey_properties', array());
  $properties_removed = array_diff(array_keys($properties_old), array_keys($properties));
  _themekey_properties_delall($properties_removed);
  //
  uasort($properties, '_themekey_properties_cmp');
  variable_set('themekey_properties', $properties);
  //
  foreach ($form_state['values'] as $key => $value) {
    $pos = strpos($key, 'themekey_');
    if ($pos !== FALSE && $pos == 0) {
      variable_set($key, $value);
    }
  }

  drupal_set_message(t('The configuration options have been saved.'));
  if (count($properties) > 10) {
    drupal_set_message(t('Attention! Do not enable too many properties as this may slow down page loads.'), 'error');
  }
}

/**
 * Function _themekey_admin_form().
 */
function _themekey_admin_form($form, $base = NULL, $reset = TRUE) {
  // Default buttons
  if (isset($base)) {
    $form['buttons']['submit'] = array(
      '#type' => 'submit',
      '#value' => t('Save configuration'),
      '#submit' => array($base .'_submit')
    );
    if ($reset) {
      $form['buttons']['reset'] = array(
        '#type' => 'submit',
        '#value' => t('Reset to defaults'),
        '#submit' => array($base .'_reset')
      );
    }
  }

  return $form;
}

/**
 * Function theme_themekey_table().
 */
function theme_themekey_table($form) {
  $rows = array();
  $header = isset($form['#header']) ? $form['#header'] : array();
  $attributes = isset($form['#attributes']) ? $form['#attributes'] : array();
  $tabledrag = isset($form['#tabledrag']) ? $form['#tabledrag'] : FALSE;

  if ($tabledrag && isset($attributes['id'])) {
    drupal_add_tabledrag($attributes['id'], 'order', 'sibling', $attributes['id'] .'-'. $tabledrag);
  }

  if (isset($attributes['description'])) {
    $rows[] = array(array('data' => $attributes['description'], 'colspan' => count($header), 'class' => 'message'));
    unset($attributes['description']);
  }

  foreach (element_children($form) as $key) {
    $row = array();
    foreach (element_children($form[$key]) as $item) {
      if ($tabledrag && $tabledrag == $item) {
        $form[$key][$item]['#attributes'] = array('class' => $attributes['id'] .'-'. $tabledrag);
      }
      $row[] = drupal_render($form[$key][$item]);
    }
    $rows[] = $tabledrag ? array('data' => $row, 'class' => 'draggable') : $row;
  }

  if (empty($rows)) {
    $message = check_plain(isset($form['#empty']) ? $form['#empty'] : t('There are no items in the table.'));
    $rows[] = array(array('data' => $message, 'colspan' => count($header), 'align' => 'center', 'class' => 'message'));
  }

  return count($rows) ? theme('table', $header, $rows, $attributes) : '';
}

function _themekey_admin_theme_warning() {
  if (variable_get('admin_theme', '0')) {
    drupal_set_message(t('Note: %admin_theme is configured as administration theme at !link. This setting is more powerful than a corresponding ThemeKey rule.',
      array('%admin_theme' => variable_get('admin_theme', '0'), '!link' => l('admin/settings/admin', 'admin/settings/admin'))), 'warning');
    if (variable_get('node_admin_theme', '0')) {
      drupal_set_message(t('Note: As configured at !link adding or editing a node will use the administration theme %admin_theme.',
        array('%admin_theme' => variable_get('admin_theme', '0'), '!link' => l('admin/settings/admin', 'admin/settings/admin'))), 'warning');
    }
  }
}