Drupal: Set content in a region programmatically

/**
 * @file
 * 
 * Provide an administrator interface for adding SEO text & images for specific page
 * 
 * DrupalD 
 */



/**
 * Implementation of hook_menu
 * 
 * DrupalD 
 */
function seo_util_menu() {
	$item['admin/config/development/seo-util'] = array(
		'type' => MENU_NORMAL_ITEM,
		'title' => t('SEO text'),
	  'page callback' => 'seo_util_overview',
	  'access arguments' => array('Administer site configuration')
	);
	
	$item['admin/config/development/seo-util/manage'] = array(
		'type' => MENU_DEFAULT_LOCAL_TASK,
		'title' => t('Manage text'),
	  'page callback' => 'seo_util_overview',
	  'access arguments' => array('Administer site configuration'),
	  'weight' => -10,
	);	
	
	
	$item['admin/config/development/seo-util/config'] = array(
    'type' => MENU_LOCAL_TASK,
    'title' => t('Settings'),
    'page callback' => 'drupal_get_form',
    'page arguments' => array('seo_util_config'),
    'access arguments' => array('Administer site configuration'),
	  'weight' => -7,
  );
	
	return $item;
}

/**
 * seo_util_overview
 * 
 * Display SEO text overview
 * 
 * DrupalD 
 */
function seo_util_overview() {
	drupal_add_css(drupal_get_path('module', 'seo_util') .'/seo_util.css');
	$am__overview = drupal_get_form('seo_util_global_text');
	$output = '
'. drupal_render($am__overview);
  $output .= '
'. _get_config_summary() .'
';  
	return $output;
	
}


/**
 * seo_util_global_text
 * 
 * DrupalD 
 */
function seo_util_global_text() {
	$form['global_text'] = array(
    '#type' => 'textarea',
    '#title' => t('Global text'),
    '#description' => t('Set the text for all pages. This will be overwritten 
      by the individual page text. You can use PHP code within @php. 
      You will need to enable PHP filter module to do this.', 
      array('@php' => '
')),

    '#default_value' => variable_get('global_text', ''),

    '#weight' => -50,

  );
  return system_settings_form($form);

}
/**

 * seo_util_config

 *

 * Select the vocabulary for which text to be added

 *

 * DrupalD 

 */

function seo_util_config() {

	$am__vocabulary = taxonomy_vocabulary_get_names();

	$am__vocab = array();

	$am__vocab[0] = t('-- Select --');

	foreach ($am__vocabulary as $vocabulary => $ob) {

		$am__vocab[$ob->vid] = $ob->name;

	}
	$form['seo_util_province_vocabulary'] = array(

	  '#type' => 'select',

	  '#title' => t('Province Vocabulary'),

	  '#description' => t('Select a vocabulary which provides a list of

      provice & cities'),

	  '#options' => $am__vocab,

	  '#required' => TRUE,

	  '#default_value' => variable_get('seo_util_province_vocabulary',00),

	  '#weight' => -10,

	);
	$form['seo_util_course_vocabulary'] = array(

	  '#type' => 'select',

	  '#title' => t('Course Vocabulary'),

	  '#description' => t('Select a vocabulary which provides a list of courses'),

	  '#options' => $am__vocab,

	  '#required' => TRUE,

	  '#default_value' => variable_get('seo_util_course_vocabulary',00),

	  '#weight' => -9,

	);
	$form['seo_util_theme_regions'] = array(

    '#type' => 'select',

    '#title' => t('Theme regions'),

	  '#description' => t('Select the region where you want to display the

      text for each of the pages/path') .'
'.

      t('The regions are listed from your default theme. Your default

      theme is @theme.', array('@theme' => variable_get('theme_default', ''))),

    '#options' =>   system_region_list(variable_get('theme_default', '')),

    '#required' => TRUE,

    '#default_value' => variable_get('seo_util_theme_regions', ''),

	);
	return system_settings_form($form);

}
/**

 * Implementation of hook_page_build

 *

 * @param $page

 * DrupalD 

 */

function seo_util_page_build(&$page) {

	$ss__global_text = variable_get('global_text', '');

	$ss__region = variable_get('seo_util_theme_regions', '');

	$page[$ss__region]['text']['#markup'] = php_eval($ss__global_text);

}
/**

 * _get_config_summary

 *

 * DrupalD 

 */

function _get_config_summary() {

	$output = '

'. t('Configuration summary') .'
';
	$output .= '
';

	$output .= '
'. t('Province/City taxonomy')

    .': '. _get_vocabulary(variable_get('seo_util_province_vocabulary', '--')) .'
';

	$output .= '
'. t('Course taxonomy')

    .': '. _get_vocabulary(variable_get('seo_util_course_vocabulary', '--')) .'
';

	$output .= '
'. t('Default theme region') .': '.

    variable_get('seo_util_theme_regions', '--') .'
';

	$output .= '
'. t('Default theme') .': '.

    variable_get('theme_default', '--') .'
';

	$output .= '
';

	$output .= t('You can change above configuration from !config page',

    array('!config' => l(t('Settings'), 'admin/config/development/seo-util/config')));

	return $output;

}
/**

 * _get_vocabulary

 *

 * Enter description here ...

 * @param unknown_type $sn__vid

 * DrupalD 

 */

function _get_vocabulary($sn__vid) {

	$names = db_query('SELECT name FROM {taxonomy_vocabulary} WHERE vid = :vid',

    array(':vid' => $sn__vid))->fetchAllAssoc('name');

  $names = array_values($names);
  return $names[0]->name;

}

?>