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<?php
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/**
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* Implementation of hook_panels_layouts()
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*/
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// Plugin definition
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$plugin = array(
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'title' => t('No wrapper'),
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'category' => t('Columns: 1'),
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'icon' => 'icon.png',
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'theme' => 'zen_no_wrapper',
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'regions' => array(
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'main' => t('Main'),
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),
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'settings form' => 'zen_no_wrapper_settings_form',
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'settings validate' => 'zen_no_wrapper_settings_validate',
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'settings submit' => 'zen_no_wrapper_settings_submit',
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);
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/**
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* Form for layout settings.
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*/
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function zen_no_wrapper_settings_form(&$display, $layout, $settings) {
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$form = array();
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$form['layout_settings'] = array(
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'#type' => 'fieldset',
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'#title' => t('Layout settings'),
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'#description' => t('Note: if this setting is used, a wrapper div will be added to accomodate the needed classes.'),
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'#collapsible' => TRUE,
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'#collapsed' => TRUE,
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);
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// Create a classes text field for each region in the layout.
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foreach ($layout['regions'] as $region => $label) {
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$form['layout_settings'][$region . '_classes'] = array(
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'#type' => 'textfield',
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'#title' => t('Classes for the “@region” region', array('@region' => $label)),
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'#default_value' => isset($settings[$region . '_classes']) ? $settings[$region . '_classes'] : '',
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'#description' => t('CSS class (or classes) to apply to the @region region in the layout. This may be blank.', array('@region' => $label)),
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);
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}
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return $form;
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}
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/**
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* Form validation for layout settings.
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*/
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function zen_no_wrapper_settings_validate(&$form_state, $form, &$display, $layout, $settings) {
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// Since we allow underscores, change the css filter from Drupal's default.
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$filter = array(' ' => '-', '/' => '-', '[' => '-', ']' => '');
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foreach (array_keys($layout['regions']) as $region) {
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// Ensure that each class is valid.
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foreach (explode(' ', $form_state['layout_settings'][$region . '_classes']) as $class) {
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$cleaned_class = drupal_clean_css_identifier($class, $filter);
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// CSS identifiers can't start with a number or a dash and a number.
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$cleaned_class = preg_replace('/^\-?\d+/', '', $cleaned_class);
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if ($class != $cleaned_class) {
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form_set_error($region . '_classes', t('The class "@class" is invalid. Here’s an alternative class name that is valid: @alternate', array('@class' => $class, '@alternate' => $cleaned_class)));
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}
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}
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}
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}
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/**
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* Form submit handler for layout settings.
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*/
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function zen_no_wrapper_settings_submit(&$form_state, &$display, $layout, $settings) {
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// Move the settings out of the 'layout_settings' array.
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foreach (array_keys($form_state['layout_settings']) as $key) {
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$form_state[$key] = $form_state['layout_settings'][$key];
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}
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unset($form_state['layout_settings']);
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}
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/**
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* Implements hook_preprocess_HOOK().
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*/
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function template_preprocess_zen_no_wrapper(&$variables, $hook) {
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foreach (array_keys($variables['layout']['regions']) as $region) {
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// Pull out the region classes to easy-to-handle variables.
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$variables[$region . '_classes'] = !empty($variables['settings'][$region . '_classes']) ? ' ' . $variables['settings'][$region . '_classes'] : '';
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}
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}
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