<?php
// $Id: custompage_ui.module,v 1.1.2.6 2010/03/15 03:22:46 inadarei Exp $

/**
* @file
* Custom Page Admin UI
**/
 
function custompage_ui_menu() {

  $access = array('administer custompage');
  
  $items = array();

  $items['admin/build/custompage'] = array(
    'title' => 'Custom Pages',
    'description' => 'Theme content of your site differently depending on the URI.',
    'page callback' => 'custompage_ui_admin_settings',
    'access arguments' => $access,
    'type' => MENU_NORMAL_ITEM
  );
  $items['admin/build/custompage/list'] = array(
    'title' => 'List Custom Pages',
    'page callback' => 'custompage_ui_admin_settings',
    'access arguments' => $access,
    'weight' => -10,
    'type' => MENU_DEFAULT_LOCAL_TASK
  );
  $items['admin/build/custompage/add'] = array(
    'title' => 'Add a Custom Page or Block',
    'page callback' => 'drupal_get_form',
    'page arguments' => array('custompage_ui_admin_settings_form'),
    'access arguments' => $access,
    'type' => MENU_LOCAL_TASK
  );
  $items['admin/build/custompage/edit/%custompage'] = array(
    'title' => 'Edit Custom Page',
    'page callback' => 'drupal_get_form',
    'page arguments' => array('custompage_ui_admin_settings_form', 4),
    'access arguments' => $access,
    'type' => MENU_CALLBACK
  );
  $items['admin/build/custompage/delete/%custompage'] = array(
    'title' => 'Delete Custom Page',
    'page callback' => 'drupal_get_form',
    'page arguments' => array('custompage_ui_delete_form', 4),
    'access arguments' => $access,
    'type' => MENU_CALLBACK
  );

  return $items;
}


function custompage_load($key) {
  $settings = variable_get('CUSTOMPAGE_UI_CONFIG', FALSE );
  
  if ( $settings == FALSE ) return FALSE;

  if ( is_object( $settings[$key] )) {
    return $settings[$key];
  }  else { 
    return FALSE;
  }
}

function custompage_ui_admin_settings() {
  $settings =   $settings = variable_get('CUSTOMPAGE_UI_CONFIG', array() );
  
  $out = "
<table>
  <tr>
    <th>".t("Title")."</th>
    <th>".t("Type")."</th>    
    <th>".t("Key")."</th>
    <th>".t("Path")."</th>
    <th>".t("Enabled")."</th>     
    <th colspan=\"2\" align=\"center\">".t("Control")."</th>                      
  </tr>
  ";
  
  foreach ( $settings as $obj ) {
    $options = array('attributes'=>array('target'=>'_blank'));
    $url = l($obj->path, $obj->path, $options);
  
    $out .="<tr>";
    $out .="<td>".$obj->title."</td>";
      $obj->type = empty($obj->type) ? t('Page') : $obj->type;
    $out .="<td>".ucfirst($obj->type)."</td>";     
    $out .="<td>".$obj->key."</td>"; 
    $out .="<td>". $url ."</td>"; 
    $enabled = ( $obj->enabled ) ? t("Yes") : t("No");
    $out .="<td>".$enabled."</td>"; 
    $out .="<td>".l(t('Edit'), 'admin/build/custompage/edit/'.$obj->key )."</td>"; 
    $out .="<td>".l(t('Delete'), 'admin/build/custompage/delete/'.$obj->key)."</td>";         
    $out .="</tr>";    
  }
  
  $out .="</table>";
  
  $out .= custompage_clearcache_message(); 
  return $out;
}

function custompage_ui_admin_settings_form(&$form_state, $saved = null ) {

  $saved = ( is_null($saved) ) ? new StdClass() : $saved;

  $form['title'] = array(
    '#type' => 'textfield',
    '#title' => t('Title'),
    '#default_value' => $saved->title,
    '#size' => 50,
    '#maxlength' => 50,
    '#description' => t('Title of the custom page or a custom block.')
  );
 
  $form['key'] = array(
    '#type' => 'textfield',
    '#title' => t('Key'),
    '#default_value' => $saved->key,
    '#required' => TRUE,
    '#size' => 50,
    '#maxlength' => 50,
    '#description' => t('Please indicate a unique key for this page or block. Template file and theme functions used
    for rendering will be named according to this key.<p><b>ATTENTION:</b> Do NOT use dash "-" in key names!</p>')
  );

  $default_type = empty($saved->type) ? 'Page' : $saved->type;
  $form['type'] = array(
    '#type' => 'select',
    '#title' => t('Type'),
    '#default_value' => $saved->type,
    '#options' => array(
      'page' => t('Page'), 
      'block' => t('Block'),
    ),
    '#required' => TRUE,    
    '#description' => t('Whether to create a page or a block.')
  );

  $form['path'] = array(
    '#type' => 'textfield',
    '#title' => t('URI Path'),
    '#default_value' => $saved->path,
    '#required' => FALSE,    
    '#size' => 50,
    '#maxlength' => 50,
    '#description' => t('Only applicable if type is page: A Drupal URI path (relative to the root URI of Drupal) that this page should
    show up at. N/A for blocks.')
  );
  
  $form['enabled'] = array(
    '#type' => 'checkbox',
    '#title' => t('Enabled'),
    '#default_value' => (isset($saved->enabled))?$saved->enabled:True,
    '#description' => t('You can disable a page/block during development. Only users with \'administer custompage\' permission can access the page when it is disabled.')
  );
 
  if ( trim($saved->key) != "" ) {
    drupal_set_title(t('Edit custom page/block: %title', array('%title' => $saved->title)));
    $form['save'] = array(
      '#type' => 'submit',
      '#value' => t('Save'),
      '#submit' => array('custompage_ui_settings_submit')
    );
  }
  else {
    drupal_set_title(t('Add a Custom Page/Block'));
    $form['submit'] = array(
      '#type' => 'submit',
      '#value' => t('Add Component'),
      '#submit' => array('custompage_ui_settings_submit'),
    );
  }

  return $form;
}

function custompage_ui_settings_submit( $form, &$form_state ) {
  $post = $form_state['values'];
  $obj = new StdClass();
  $obj->title = $post['title'];
  $obj->type = $post['type'];    
  $obj->key = $post['key'];  
  $obj->path = $post['path'];    
  $obj->enabled = $post['enabled'];    
  $settings = variable_get('CUSTOMPAGE_UI_CONFIG', array() );
  $settings[$obj->key] = $obj;
  variable_set('CUSTOMPAGE_UI_CONFIG', $settings);  
  drupal_flush_all_caches();
  
  drupal_goto('admin/build/custompage');
}

function custompage_ui_delete_form(&$form_state, $setting) {
  $form['title'] = array('#type' => 'hidden', '#value' => $setting->title);
  $form['key'] = array('#type' => 'hidden', '#value' => $setting->key);

  return confirm_form(
    $form,
    t('Delete custom page %title', array('%title' => $setting->title)),
    'admin/build/custompage',
    '<p>'. t('Are you sure you want to delete the custom page %title?', array('%title' => $setting->title)) .'</p>',
    t('Delete'),
    t('Cancel')
  );
}

function custompage_ui_delete_form_submit($form, &$form_state) {
  $key = $form_state['values']['key'];
  $settings = variable_get('CUSTOMPAGE_UI_CONFIG', null );
  if ( is_array( $settings ) && is_object( $settings[$key] ) ) {
    $new_settings = array_diff_key2($settings, array( $key => 'remove') );
  }
  variable_set( 'CUSTOMPAGE_UI_CONFIG', $new_settings );
  drupal_flush_all_caches();
  drupal_set_message(t('The custom page: %title has been deleted.', array('%title' => $form_state['values']['title'])));
  $form_state['redirect'] = 'admin/build/custompage';
  return;
}

/** 
* This gives support for PHP4 which does not have 
* array_diff_key function.
*/
function array_diff_key2( $arr1, $arr2 ) {
  
  if ( function_exists( 'array_diff_key' ) ) {
    return array_diff_key ( $arr1, $arr2 );
  } 
  else {
    $arr3 = array();
    if ( ! is_array($arr1) || ! ( sizeof( $arr1 ) > 0 ) ) return $arr3;
    foreach ( $arr1 as $key => $val ) {
      if ( ! array_key_exists($key, $arr2) ) {
        $arr3[$key] = $val;
      }
    }
    return $arr3;
  }
}

/**
* Implementation of hook_custompages
*/
function custompage_ui_custompages() {

  return variable_get( 'CUSTOMPAGE_UI_CONFIG', null );

}