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<?php
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/**
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* @file Main file for the vertical tabs module - provides vertical tabs on the
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* node form.
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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 vertical_tabs_form_alter(&$form, $form_state, $form_id) {
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// Check to see which form we are in. Since the node form's form id is not
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// just node_form, we can't implement a function for all node forms, so we are
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// stuck implementing the global form_alter and checking if there is the
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// string node_form in the form id.
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if (strpos($form_id, 'node_form')) {
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// We're in a node form - we can't group all fieldsets into a vertical_tabs
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// element, because validation errors would arise from that, so instead we
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// have to add a large number to all the weights of the fieldsets, because
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// we want them to all be grouped together. Additionally, we need to bind
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// the summary callback and add other JavaScript.
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// The $fieldsets array is a list of all supported fieldsets in core,
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// and their JavaScript summary creators.
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$fieldsets = array(
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'book' => 'book',
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'revision_information' => 'revision',
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'author' => 'authoring',
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'options' => 'publishingOptions',
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'menu' => 'menu',
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'comment_settings' => 'comment',
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'path' => 'path',
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'attachments' => 'attachments',
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);
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// The javascript to add to the page.
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$javascript = array();
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// Store the greatest weight so we can know how low to move the buttons.
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$greatest_weight = 0;
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// Iterate through the form, finding fieldsets.
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foreach (element_children($form) as $key) {
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// We need to make sure that the element we have is a fieldset.
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if ($form[$key]['#type'] == 'fieldset') {
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// Assign the weight.
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$form[$key]['#weight'] = ($form[$key]['#weight'] ? $form[$key]['#weight'] + 1000000 : 1000000);
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// Determine the greatest weight.
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$greatest_weight = max($greatest_weight, $form[$key]['#weight']);
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// Add the JavaScript.
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$javascript[$key] = array('name' => $form[$key]['#title']);
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// If there's a summary callback, then add it.
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if (isset($form[$key]['#summary_callback']) || isset($fieldsets[$key])) {
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$javascript[$key]['callback'] = (isset($form[$key]['#summary_callback']) ? $form[$key]['#summary_callback'] : $fieldsets[$key]);
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$javascript[$key]['args'] = (isset($form[$key]['#summary_arguments']) ? $form[$key]['#summary_arguments'] : array());
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}
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// Add a class to identify the fieldset.
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if (isset($form[$key]['#attributes']['class']) && !empty($form[$key]['#attributes']['class'])) {
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$form[$key]['#attributes']['class'] .= ' vertical-tabs-fieldset vertical-tabs-'. $key;
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}
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else {
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$form[$key]['#attributes']['class'] = 'vertical-tabs-fieldset vertical-tabs-'. $key;
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}
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}
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}
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// Move the buttons, and add a <div> for easier placement of the tab element.
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$form['buttons']['#weight'] = $greatest_weight + 1;
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$form['buttons']['#prefix'] = '<div class="buttons">';
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$form['buttons']['#suffix'] = '</div>';
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// Add the JavaScript.
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drupal_add_js(array('verticalTabs' => $javascript), 'setting');
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// Indicate that the JavaScript should be added later. We do this so that
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// our JavaScript gets added after collapse.js.
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$form['#post_render'][] = 'vertical_tabs_add_js_css';
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}
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}
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/**
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* Add the JavaScript and CSS.
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*/
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function vertical_tabs_add_js_css($form) {
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drupal_add_js(drupal_get_path('module', 'vertical_tabs') .'/vertical_tabs.js');
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drupal_add_css(drupal_get_path('module', 'vertical_tabs') .'/vertical_tabs.css');
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return $form;
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}
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