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<?php
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// $Id: node_style.module,v 1.21 2007/02/09 14:37:59 karthik Exp $
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/**
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* @file
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* Allows for node specific customisations at the theme level.
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* @author
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* Karthik Kumar/Zen [ http://drupal.org/user/21209 ].
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* @todo
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* Discern custom regions.
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* Integration with _a_ "signals" module.
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* Make module usable with more than just nodes.
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*/
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/**
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* Implementation of hook_help().
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*/
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function node_style_help($section) {
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switch ($section) {
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case 'admin/help#node_style':
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return t('This module allows for node specific style customisations. Its primary uses include:
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<ul>
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<li>Controlling the display of node and page elements such as sidebars, links, titles etc. A common use of this feature is in front/welcome pages.</li>
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<li>Setting a custom theme for certain nodes.</li>
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<li>Injecting HTML in the <head /> block for specific nodes. A common use of this feature is to introduce node-specific styles or javascript.</li>
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</ul>');
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case 'admin/build/node_style':
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return t('This module allows for node specific style customisations.');
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case 'admin/build/node_style/configure':
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return t('The inner workings of this module involve the use of a function that is ocassionally also used in certain themes. The Garland and Minnelli themes, for e.g., use this function and this can generated an unsightly error message. To resolve this issue, please follow the following steps:
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<ul>
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<li>In the conflicting theme, look for the function <em>_phptemplate_variables()</em>. This is almost always present in template.php. (If it is not, it will have to be moved into that file.)</li>
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<li>Rename the function <em>_phptemplate_variables_theme_key</em> where theme_key is a representation of the theme, commonly its name. For e.g., in the case of the Garland theme, rename it to <em>_phptemplate_variables_garland</em>.</li>
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<li>Save the file.</li>
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<li>Check the <em>Theme compatibility</em> check box below and save the change.</li>
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</ul>
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Compatibility mode will be deactivated whenever themes are enabled or disabled.');
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}
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}
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/**
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* Implementation of hook_menu().
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*/
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function node_style_menu($may_cache) {
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global $node_style;
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$items = array();
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if ($may_cache) {
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$items[] = array(
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'path' => 'admin/build/node_style',
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'title' => t('Node style'),
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'callback' => '_node_style_schemes',
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'access' => user_access('administer node styles')
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);
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$items[] = array(
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'path' => 'admin/build/node_style/schemes',
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'title' => t('Schemes'),
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'callback' => '_node_style_schemes',
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'access' => user_access('administer node styles'),
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'type' => MENU_DEFAULT_LOCAL_TASK,
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'weight' => -1
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);
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$items[] = array(
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'path' => 'admin/build/node_style/add',
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'title' => t('Add scheme'),
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'callback' => 'drupal_get_form',
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'callback arguments' => array('_node_style_schemes_add'),
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'access' => user_access('administer node styles'),
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'type' => MENU_LOCAL_TASK
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);
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$items[] = array(
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'path' => 'admin/build/node_style/configure',
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'title' => t('Configure'),
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'callback' => 'drupal_get_form',
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'callback arguments' => array('_node_style_configure'),
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'access' => user_access('administer node styles'),
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'type' => MENU_LOCAL_TASK
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);
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$items[] = array(
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'path' => 'admin/build/node_style/edit',
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'title' => t('Edit scheme'),
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'callback' => 'drupal_get_form',
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'callback arguments' => array('_node_style_schemes_edit'),
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'access' => user_access('administer node styles'),
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'type' => MENU_CALLBACK
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);
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$items[] = array(
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'path' => 'admin/build/node_style/delete',
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'title' => t('Delete scheme'),
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'callback' => 'drupal_get_form',
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'callback arguments' => array('_node_style_schemes_delete'),
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'access' => user_access('administer node styles'),
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'type' => MENU_CALLBACK
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);
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}
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else {
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// node_style configurations need to be loaded in hook_menu to allow for
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// cached pages. Workarounds for the global are welcome.
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if (arg(0) == 'node') {
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if (is_numeric(arg(1)) && empty($_POST)) {
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$node_style = _node_style_get_node_style(arg(1));
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_node_style_set_custom_theme($node_style);
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}
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elseif (!empty($_POST) && (arg(1) == 'add' || arg(2) == 'edit') && isset($_POST['op']) && $_POST['op'] == 'Preview' && isset($_POST['node_style_scheme'])) {
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// Since this is a node form preview, initialise $node_style to ensure
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// that previews work properly for existing nodes that are being edited.
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$node_style = array();
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// Hack: Access $_POST to retrieve the node_style scheme. Due to the
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// fact that $custom_theme cannot be set in hook_nodeapi, this is the
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// only workable solution for allowing node_style previews.
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// If the situation arises where theme overrides have become more
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// flexible, this block can be shoved into hook_nodeapi.
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if ($_POST['node_style_scheme']) {
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$node_style = _node_style_get_scheme((int) $_POST['node_style_scheme']);
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// Set custom theme if enabled.
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_node_style_set_custom_theme($node_style);
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}
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}
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}
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// node_style.inc includes the _phptemplate_variables call. This function
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// has been isolated as possibilities exist where the same function might be
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// declared elsewhere.
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if (variable_get('node_style_mode', 0) && (arg(2) != 'node_style')) {
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include 'node_style.inc';
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}
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}
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return $items;
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}
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/**
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* Implementation of hook_perm().
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*/
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function node_style_perm() {
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return array('customise node styles', 'administer node styles');
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}
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/**
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* Implementation of hook_form_alter().
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*/
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function node_style_form_alter($form_id, &$form) {
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if (isset($form['type']) && $form['type']['#value'] .'_node_form' == $form_id && user_access('customise node styles')) {
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$node = $form['#node'];
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$schemes = array('0' => t('None')) + _node_style_get_schemes();
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$form['node_style'] = array(
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'#type' => 'fieldset',
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'#title' => 'Node style',
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'#collapsible' => TRUE,
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'#collapsed' => empty($node->node_style),
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'#weight' => 30
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);
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$form['node_style']['node_style_scheme'] = array(
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'#type' => 'select',
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'#title' => t('Node style scheme'),
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'#description' => t('Select the <a href="!scheme">style scheme</a> to associate with this node.', array('!scheme' => url('admin/build/node_style'))),
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'#options' => $schemes,
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'#default_value' => (isset($node->node_style) ? $node->node_style['sid'] : 0)
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);
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}
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elseif ($form_id == 'system_themes') {
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// To disable theme compatibility mode when changes are made to the theme
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// screen, inject a submit handler.
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$form['#submit']['node_style_alter_mode_submit'] = array();
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}
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}
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/**
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* Process system_theme function submissions.
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*/
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function node_style_alter_mode_submit($form_id, $form_values) {
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// Delete compatibility variable.
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variable_del('node_style_mode');
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// Point user to the configuration screen.
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drupal_set_message(t('Node style: <a href="!theme-compatibility">Theme compatibility mode</a> has been switched off.', array('!theme-compatibility' => url('admin/build/node_style/configure'))));
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}
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/**
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* Implementation of hook_nodeapi().
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*/
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function node_style_nodeapi(&$node, $op, $arg) {
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if (user_access('customise node styles')) {
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switch ($op) {
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case 'load':
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if (isset($node->nid) && !isset($GLOBALS['node_style'])) {
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$node->node_style = $GLOBALS['node_style'] = _node_style_get_node_style($node->nid);
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}
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break;
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case 'delete':
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_node_style_delete_node_style($node->nid);
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break;
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case 'update':
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_node_style_delete_node_style($node->nid);
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// Fall through.
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case 'insert':
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if (!empty($node->node_style_scheme)) {
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_node_style_add_node_style($node->nid, $node->node_style_scheme);
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}
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}
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}
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}
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/**
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* Menu callback: Display a table of available schemes.
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*/
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function _node_style_schemes() {
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$result = db_query("SELECT s.name, s.sid, COUNT(m.sid) AS count FROM {node_style_schemes} s LEFT JOIN {node_style_maps} m USING (sid) GROUP BY s.sid ORDER BY s.name");
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$rows = array();
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while ($row = db_fetch_array($result)) {
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$rows[] = array($row['name'], $row['count'], l('edit', 'admin/build/node_style/edit/'. $row['sid']), l('delete', 'admin/build/node_style/delete/'. $row['sid']));
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}
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if (empty($rows)) {
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$rows[] = array(array('data' => t('No schemes found.'), 'colspan' => 4));
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}
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$header = array(t('Scheme'), t('Use count'), array('data' => t('Operations'), 'colspan' => 2));
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return theme('table', $header, $rows);
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}
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/**
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* Menu callback: Add a theme compatibility configuration screen.
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*/
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function _node_style_configure() {
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$form['mode'] = array(
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'#type' => 'checkbox',
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'#title' => t('Theme compatibility'),
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'#description' => t('If checked, indicates that all themes on this site are compatible with this module.'),
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'#default_value' => variable_get('node_style_mode', 0)
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);
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$form['submit'] = array('#type' => 'submit', '#value' => t('Save configuration'));
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return $form;
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}
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/**
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* Process the theme compatibility configuration form.
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*/
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function _node_style_configure_submit($form_id, $form_values) {
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variable_set('node_style_mode', $form_values['mode']);
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drupal_set_message(t('Configuration saved.'));
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return 'admin/build/node_style';
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}
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/**
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* Menu callback: Add a new scheme.
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*/
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function _node_style_schemes_add($sid = NULL) {
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$hide_array = _node_style_get_arrays();
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if (isset($sid)) {
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$scheme = _node_style_get_scheme($sid);
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if (isset($scheme)) {
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$form['sid'] = array('#type' => 'value', '#value' => $sid);
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}
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}
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$form['name'] = array(
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'#type' => 'textfield',
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'#title' => t('Scheme name'),
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'#description' => t('A name to identify this scheme in a node form.'),
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'#default_value' => $scheme['name'],
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'#required' => TRUE
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);
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$form['display'] = array(
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'#type' => 'fieldset',
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'#title' => t('Display settings'),
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'#tree' => TRUE,
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'#collapsible' => TRUE,
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'#collapsed' => FALSE
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);
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foreach ($hide_array as $hook => $values) {
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$form['display'][$hook] = array(
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'#type' => 'checkboxes',
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'#title' => t('Hide the following %hook elements', array('%hook' => $hook)),
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'#options' => $hide_array[$hook],
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'#default_value' => isset($scheme['variables']['display'][$hook]) ? $scheme['variables']['display'][$hook] : array(),
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);
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}
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$themes = list_themes();
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$options = array();
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foreach ($themes as $id => $theme) {
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// There is a possibility of discrepancies here if a selected theme is
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// disabled in the theme admin pages after being enabled here.
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if ($theme->status == 1) {
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$options[$id] = $theme->name;
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}
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}
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asort($options);
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$options = array('default' => t('default')) + $options;
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$form['misc'] = array(
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'#type' => 'fieldset',
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'#title' => t('Miscellaneous settings'),
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'#tree' => TRUE,
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'#collapsible' => TRUE,
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'#collapsed' => FALSE
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);
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$form['misc']['theme'] = array(
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'#type' => 'select',
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'#title' => t('Select a theme to display for this node'),
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'#description' => t('Select default to use the default theme.'),
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'#options' => $options,
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'#default_value' => $scheme['variables']['misc']['theme']
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);
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$form['misc']['head'] = array(
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'#type' => 'textarea',
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'#title' => t('Insert mark-up into <head><head/>'),
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'#description' => t('e.g. Add a stylesheet: <style type="text/css" media="all">@import "/misc/drupal.css";</style> or a Javascript file etc.'),
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'#default_value' => $scheme['variables']['misc']['head'],
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'#rows' => 6,
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'#resizable' => TRUE
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);
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$form['submit'] = array('#type' => 'submit', '#value' => 'Save scheme');
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$form['#base'] = 'node_style_scheme';
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return $form;
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}
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/**
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* Menu callback: Edit a scheme.
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*/
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function _node_style_schemes_edit($sid = NULL) {
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if (isset($sid)) {
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return _node_style_schemes_add($sid);
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}
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else {
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drupal_set_message(t('Scheme not found.'), 'error');
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drupal_goto('admin/build/node_style');
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}
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}
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/**
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* Process a scheme add / edit form submission.
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*/
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function node_style_scheme_submit($form_id, $form_values) {
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$scheme = array('display' => array(), 'misc' => array());
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$scheme['display']['node'] = array_filter($form_values['display']['node']);
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$scheme['display']['node'] = array_keys($scheme['display']['node']);
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$scheme['display']['page'] = array_filter($form_values['display']['page']);
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$scheme['display']['page'] = array_keys($scheme['display']['page']);
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$scheme['misc']['theme'] = $form_values['misc']['theme'];
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$scheme['misc']['head'] = $form_values['misc']['head'];
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if (isset($form_values['sid'])) {
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_node_style_update_scheme($form_values['sid'], $form_values['name'], $scheme);
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drupal_set_message(t('Style scheme %name updated successfully.', array('%name' => $name)));
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}
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else {
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_node_style_add_scheme($form_values['name'], $scheme);
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drupal_set_message(t('Style scheme %name added successfully.', array('%name' => $name)));
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}
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cache_clear_all();
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return 'admin/build/node_style';
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}
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/**
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* Menu callback: Delete a scheme.
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*/
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function _node_style_schemes_delete($sid = NULL) {
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if (is_numeric($sid)) {
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$scheme = _node_style_get_scheme($sid);
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$form['sid'] = array('#type' => 'value', '#value' => $sid);
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$form['scheme_name'] = array('#type' => 'value', '#value' => $scheme['name']);
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return confirm_form($form,
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t('Are you sure you want to delete the scheme %title?', array('%title' => $scheme['name'])),
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'admin/build/node_style/',
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t('This action cannot be undone.'),
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t('Delete'),
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t('Cancel')
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);
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}
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else {
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drupal_set_message(t('Scheme not found'), 'error');
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}
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}
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/**
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* Process a scheme deletion form submission.
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*/
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function _node_style_schemes_delete_submit($form_id, $form_values) {
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db_query("DELETE FROM {node_style_maps} WHERE sid = %d", $form_values['sid']);
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db_query("DELETE FROM {node_style_schemes} WHERE sid = %d", $form_values['sid']);
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drupal_set_message(t('The scheme %title has been deleted.', array('%title' => $form_values['scheme_name'])));
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watchdog('content', t('The scheme %title has been deleted.', array('%title' => $form_values['scheme_name'])));
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cache_clear_all();
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return 'admin/build/node_style';
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}
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/**
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* Returns a PHPTemplate variables array based on $hook. Called from node_style.inc.
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*
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* @see _phptemplate_variables
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*/
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function node_style_return_vars($hook, $variables) {
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global $node_style;
|
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if (!empty($node_style)) {
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$scheme = $node_style['variables'];
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if (isset($scheme['display'][$hook])) {
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foreach ($scheme['display'][$hook] as $var) {
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// Only affect existing variables.
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| 416 |
if (isset($variables[$var])) {
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| 417 |
// Set to null rather than '' or array() to ensure that no data type
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| 418 |
// mismatches occur.
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| 419 |
$variables[$var] = null;
|
| 420 |
}
|
| 421 |
}
|
| 422 |
}
|
| 423 |
if ($hook == 'page') {
|
| 424 |
// Rather than appending to "head", append to styles, thereby allowing for
|
| 425 |
// overrides of existing stylesheets.
|
| 426 |
$variables['styles'] .= trim($scheme['misc']['head']);
|
| 427 |
_node_style_set_custom_theme($node_style);
|
| 428 |
}
|
| 429 |
}
|
| 430 |
|
| 431 |
return $variables;
|
| 432 |
}
|
| 433 |
|
| 434 |
/**
|
| 435 |
* Insert node_style settings into the database.
|
| 436 |
*/
|
| 437 |
function _node_style_add_node_style($nid, $sid) {
|
| 438 |
db_query("INSERT INTO {node_style_maps} (nid, sid) VALUES (%d, %d)", $nid, $sid);
|
| 439 |
}
|
| 440 |
|
| 441 |
/**
|
| 442 |
* Delete node_style settings associated with a node.
|
| 443 |
*/
|
| 444 |
function _node_style_delete_node_style($nid) {
|
| 445 |
db_query('DELETE FROM {node_style_maps} WHERE nid = %d', $nid);
|
| 446 |
}
|
| 447 |
|
| 448 |
/**
|
| 449 |
* Retrieve any node_style settings for a node from the database.
|
| 450 |
*/
|
| 451 |
function _node_style_get_node_style($nid) {
|
| 452 |
static $node_style = NULL;
|
| 453 |
|
| 454 |
if (!isset($node_style)) {
|
| 455 |
$node_style = array();
|
| 456 |
|
| 457 |
$result = db_query("SELECT m.sid, s.variables FROM {node_style_maps} m LEFT JOIN {node_style_schemes} s USING (sid) WHERE m.nid = %d", $nid);
|
| 458 |
if ($node_style = db_fetch_array($result)) {
|
| 459 |
$node_style['variables'] = unserialize($node_style['variables']);
|
| 460 |
}
|
| 461 |
}
|
| 462 |
|
| 463 |
return $node_style;
|
| 464 |
}
|
| 465 |
|
| 466 |
/**
|
| 467 |
* Insert a scheme into the database.
|
| 468 |
*/
|
| 469 |
function _node_style_add_scheme($name, $scheme) {
|
| 470 |
db_query("INSERT INTO {node_style_schemes} (name, variables) VALUES ('%s', '%s')", $name, serialize($scheme));
|
| 471 |
}
|
| 472 |
|
| 473 |
/**
|
| 474 |
* Update an existing scheme.
|
| 475 |
*/
|
| 476 |
function _node_style_update_scheme($sid, $name, $scheme) {
|
| 477 |
db_query("UPDATE {node_style_schemes} SET name = '%s', variables = '%s' WHERE sid = %d", $name, serialize($scheme), $sid);
|
| 478 |
}
|
| 479 |
|
| 480 |
/**
|
| 481 |
* Retrieve a scheme.
|
| 482 |
*/
|
| 483 |
function _node_style_get_scheme($sid) {
|
| 484 |
$result = db_query('SELECT name, variables FROM {node_style_schemes} WHERE sid = %d', $sid);
|
| 485 |
if ($scheme = db_fetch_array($result)) {
|
| 486 |
$scheme['variables'] = unserialize($scheme['variables']);
|
| 487 |
}
|
| 488 |
|
| 489 |
return $scheme;
|
| 490 |
}
|
| 491 |
|
| 492 |
/**
|
| 493 |
* Retrieve all schemes.
|
| 494 |
*/
|
| 495 |
function _node_style_get_schemes() {
|
| 496 |
$result = db_query('SELECT sid, name FROM {node_style_schemes} ORDER BY name');
|
| 497 |
$schemes = array();
|
| 498 |
while ($scheme = db_fetch_array($result)) {
|
| 499 |
// The scheme name is translated only for the node form.
|
| 500 |
$schemes[$scheme['sid']] = check_plain($scheme['name']);
|
| 501 |
}
|
| 502 |
|
| 503 |
return $schemes;
|
| 504 |
}
|
| 505 |
|
| 506 |
/**
|
| 507 |
* Return PHPTemplate variables array.
|
| 508 |
*/
|
| 509 |
function _node_style_get_arrays() {
|
| 510 |
$hide_array = array();
|
| 511 |
$hide_array['node'] = array(
|
| 512 |
'links' => t('Node links'),
|
| 513 |
'terms' => t('Taxonomy terms'),
|
| 514 |
'picture' => t('User picture'),
|
| 515 |
'submitted' => t('Submission information')
|
| 516 |
);
|
| 517 |
$hide_array['page'] = array(
|
| 518 |
'breadcrumb' => t('Breadcrumb'),
|
| 519 |
'closure' => t('Closure message'),
|
| 520 |
'footer_message' => t('Footer message'),
|
| 521 |
'primary_links' => t('Links: primary'),
|
| 522 |
'secondary_links' => t('Links: secondary'),
|
| 523 |
'logo' => t('Logo'),
|
| 524 |
'mission' => t('Mission'),
|
| 525 |
'search_box' => t('Search box'),
|
| 526 |
'sidebar_left' => t('Sidebar: left'),
|
| 527 |
'sidebar_right' => t('Sidebar: right'),
|
| 528 |
'site_name' => t('Site name'),
|
| 529 |
'site_slogan' => t('Site slogan'),
|
| 530 |
'title' => t('Title (content)'),
|
| 531 |
'head_title' => t('Title (title bar)')
|
| 532 |
);
|
| 533 |
|
| 534 |
return $hide_array;
|
| 535 |
}
|
| 536 |
|
| 537 |
/**
|
| 538 |
* Check the node style and override the theme if necessary.
|
| 539 |
*/
|
| 540 |
function _node_style_set_custom_theme($node_style) {
|
| 541 |
global $custom_theme;
|
| 542 |
|
| 543 |
if (isset($node_style['variables']['misc']['theme']) && $node_style['variables']['misc']['theme'] != 'default') {
|
| 544 |
// The current theme is overridden regardless of whether the theme is active
|
| 545 |
// or not. This is a matter for core to deal with, not this module.
|
| 546 |
$custom_theme = $node_style['variables']['misc']['theme'];
|
| 547 |
}
|
| 548 |
}
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