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-rw-r--r--link.install36
-rw-r--r--link.module425
2 files changed, 461 insertions, 0 deletions
diff --git a/link.install b/link.install
new file mode 100644
index 0000000..04879d1
--- /dev/null
+++ b/link.install
@@ -0,0 +1,36 @@
+<?php
+// $Id$
+
+/**
+ * Implementation of hook_install().
+ */
+function link_install() {
+ switch ($GLOBALS['db_type']) {
+ case 'mysql':
+ case 'mysqli':
+ db_query("CREATE TABLE {node_field_link_data} (
+ nid int unsigned NOT NULL default '0',
+ vid int unsigned NOT NULL default '0',
+ field_name varchar(32) NOT NULL default '',
+ delta int unsigned NOT NULL default '0',
+ field_url varchar(255) NOT NULL default '',
+ field_title varchar(255) NOT NULL default '',
+ attributes text NOT NULL default '',
+ PRIMARY KEY (vid,field_name,delta)
+ ) /*!40100 DEFAULT CHARACTER SET utf8 */;");
+ break;
+
+ case 'pgsql':
+ db_query("CREATE TABLE {node_field_link_data} (
+ nid integer unsigned NOT NULL default '0',
+ vid integer unsigned NOT NULL default '0',
+ field_name varchar(32) NOT NULL default '',
+ delta integer unsigned NOT NULL default '0',
+ field_url varchar(255) NOT NULL default '',
+ field_title varchar(255) NOT NULL default '',
+ attributes text NOT NULL default '',
+ PRIMARY KEY (vid,field_name,delta)
+ )");
+ break;
+ }
+}
diff --git a/link.module b/link.module
new file mode 100644
index 0000000..a09b9a3
--- /dev/null
+++ b/link.module
@@ -0,0 +1,425 @@
+<?php
+// $Id$
+
+/**
+ * @file
+ * Defines simple link field types.
+ */
+
+/**
+ * Implementation of hook_help().
+ */
+function link_help($section) {
+ switch ($section) {
+ case 'admin/modules#description':
+ return t('Defines simple link field types. <em>Note: Requires content.module.</em>');
+ }
+}
+
+/**
+ * Implementation of hook_field_info().
+ */
+function link_field_info() {
+ return array(
+ 'link' => array('label' => 'Link'),
+ );
+}
+
+/**
+ * Implementation of hook_field_settings().
+ */
+function link_field_settings($op, $field) {
+ switch ($op) {
+ case 'form':
+ $form = array();
+ $options = array(
+ 'default' => t('Default (no target attribute)'),
+ '_top' => t('Open link in window root'),
+ '_blank' => t('Open link in new window'),
+ 'user' => t('Allow the user to choose'),
+ );
+ $form['attributes'] = array (
+ '#tree' => true,
+ );
+ $form['attributes']['target'] = array(
+ '#type' => 'radios',
+ '#title' => t('Link Target'),
+ '#default_value' => $field['attributes']['target'] ? $field['attributes']['target'] : 'default',
+ '#options' => $options,
+ );
+ return $form;
+
+ case 'save':
+ return array('attributes');
+ }
+}
+
+/**
+ * Implementation of hook_field().
+ */
+function link_field($op, &$node, $field, &$node_field, $teaser, $page) {
+ switch ($op) {
+ case 'load':
+ switch($field['type']) {
+ case 'link':
+ $result = db_query("SELECT field_url, field_title, attributes FROM {node_field_link_data} WHERE vid = %d AND field_name = '%s' ORDER BY delta", $node->vid, $field['field_name']);
+ if ($field['multiple']) {
+ $values = array();
+ while ($value = db_fetch_array($result)) {
+ $values[] = array('value' => array('link' => $value['field_url'], 'title' => $value['field_title'], 'attributes' => unserialize($value['attributes'])));
+ }
+ $additions = array($field['field_name'] => $values);
+ }
+ else {
+ $dbvalue = db_fetch_array($result);
+ $value = array ('link' => $dbvalue['field_url'], 'title' => $dbvalue['field_title'], 'attributes' => unserialize($dbvalue['attributes']));
+ $additions = array($field['field_name'] => array('value' => $value));
+ }
+ break;
+ }
+ return $additions;
+
+ case 'view':
+ $output = '';
+ if ($field['multiple']) {
+ foreach ($node_field as $delta => $item) {
+ $node_field[$delta]['view'] = link_field_view($field, $item['value'], $item, $node);
+ }
+ }
+ else {
+ $node_field['view'] = link_field_view($field, $node_field['value'], $node_field, $node);
+ }
+ $node->$field['field_name'] = $node_field;
+ if ($field['multiple']) {
+ $output = '';
+ foreach ($node_field as $delta => $item) {
+ $output .= '<div class="'. $field['field_name'] .'">'. $item['view'] .'</div>';
+ }
+ return $output;
+ }
+ else {
+ return '<div class="'. $field['field_name'] .'">'. $node_field['view'] .'</div>';
+ }
+
+ case 'insert':
+ switch($field['type']) {
+ case 'link':
+ if ($field['multiple']) {
+ foreach ($node_field as $delta => $item) {
+ if ($item['value']['link']) {
+ db_query("INSERT INTO {node_field_link_data} (nid, vid, field_name, delta, field_url, field_title, attributes) VALUES (%d, %d, '%s', %d, '%s', '%s', '%s')", $node->nid, $node->vid, $field['field_name'], $delta, $item['value']['link'], $item['value']['title'], serialize($item['value']['attributes']));
+ }
+ }
+ }
+ else {
+ if ($node_field['value']['link']) {
+ db_query("INSERT INTO {node_field_link_data} (nid, vid, field_name, field_url, field_title, attributes) VALUES (%d, %d, '%s', '%s', '%s', '%s')", $node->nid, $node->vid, $field['field_name'], $node_field['value']['link'], $node_field['value']['title'], serialize($node_field['value']['attributes']));
+ }
+ }
+ break;
+ }
+ return;
+
+ case 'update':
+ // Delete and insert, rather than update, in case a field was added.
+ switch($field['type']) {
+ case 'link':
+ link_field('delete', $node, $field, $node_field, $teaser, $page);
+ link_field('insert', $node, $field, $node_field, $teaser, $page);
+ break;
+ }
+ return;
+
+ case 'delete':
+ // Delete using nid rather than vid to purge all revisions.
+ switch($field['type']) {
+ case 'link':
+ db_query("DELETE FROM {node_field_link_data} WHERE nid = %d AND field_name = '%s'", $node->nid, $field['field_name']);
+ break;
+ }
+ return;
+ }
+}
+
+/**
+ * Implementation of hook_widget_info().
+ */
+function link_widget_info() {
+ return array(
+ 'link' => array(
+ 'label' => 'Text Fields for Title and URL',
+ 'field types' => array('link'),
+ ),
+ );
+}
+
+/**
+ * Implementation of hook_widget().
+ */
+function link_widget($op, &$node, $field, &$node_field) {
+ switch ($op) {
+ case 'form':
+ $form = array();
+
+ $form[$field['field_name']] = array('#tree' => TRUE);
+
+ if ($field['multiple']) {
+ // Generate more fields if necessary on preview
+ if ($_POST['edit'][$field['field_name']]) {
+ $node_field = $_POST['edit'][$field['field_name']];
+ }
+ // Convert an old 'single' value field into the first value of a new multi-value field
+ if ($node_field['value']) {
+ $node_field[0]['value'] = $node_field['value'];
+ unset($node_field['value']);
+ }
+ $delta = 0;
+ foreach ($node_field as $data) {
+ if ($data['value']['link']) {
+ $form[$field['field_name']][$delta]['value'] = array(
+ '#type' => 'fieldset',
+ '#title' => t($field['widget']['label']),
+ '#tree' => true,
+ );
+ $form[$field['field_name']][$delta]['value']['link'] = array(
+ '#type' => 'textfield',
+ '#title' => t('URL'),
+ '#default_value' => $data['value']['link'],
+ '#required' => ($delta == 0) ? $field['required'] : FALSE,
+ );
+ $form[$field['field_name']][$delta]['value']['title'] = array(
+ '#type' => 'textfield',
+ '#title' => t('Title'),
+ '#default_value' => $data['value']['title'],
+ );
+ if ($field['attributes']['target'] == 'user') {
+ $form[$field['field_name']][$delta]['value']['attributes']['target'] = array(
+ '#type' => 'checkbox',
+ '#title' => t('Open New Window'),
+ '#default_value' => $data['value']['attributes']['target'],
+ '#return_value' => "_blank",
+ );
+ }
+ $delta++;
+ }
+ }
+ foreach (range($delta, $delta + 1) as $delta) {
+ $form[$field['field_name']][$delta]['value'] = array(
+ '#type' => 'fieldset',
+ '#title' => t($field['widget']['label']),
+ '#tree' => true,
+ );
+ $form[$field['field_name']][$delta]['value']['link'] = array(
+ '#type' => 'textfield',
+ '#title' => t('URL'),
+ '#default_value' => $node_field[$delta]['value']['link'],
+ '#required' => ($delta == 0) ? $field['required'] : FALSE,
+ );
+ $form[$field['field_name']][$delta]['value']['title'] = array(
+ '#type' => 'textfield',
+ '#title' => t('Title'),
+ '#default_value' => $node_field[$delta]['value']['title'],
+ );
+ if ($field['attributes']['target'] == 'user') {
+ $form[$field['field_name']][$delta]['value']['attributes']['target'] = array(
+ '#type' => 'checkbox',
+ '#title' => t('Open New Window'),
+ '#return_value' => "_blank",
+ );
+ }
+ }
+ } // end if multiple
+ else {
+ $form[$field['field_name']]['value'] = array(
+ '#type' => 'fieldset',
+ '#title' => t($field['widget']['label']),
+ '#tree' => true,
+ );
+ $form[$field['field_name']]['value']['link'] = array(
+ '#type' => 'textfield',
+ '#title' => t('URL'),
+ '#default_value' => $node_field['value']['link'],
+ '#required' => ($delta == 0) ? $field['required'] : FALSE,
+ );
+ $form[$field['field_name']]['value']['title'] = array(
+ '#type' => 'textfield',
+ '#title' => t('Title'),
+ '#default_value' => $node_field['value']['title'],
+ '#required' => ($delta == 0) ? $field['required'] : FALSE,
+ );
+ if ($field['attributes']['target'] == 'user') {
+ $form[$field['field_name']]['value']['attributes']['target'] = array(
+ '#type' => 'checkbox',
+ '#title' => t('Open New Window'),
+ '#default_value' => $node_field['value']['attributes']['target'],
+ '#return_value' => "_blank",
+ );
+ }
+ }
+ return $form;
+
+ case 'validate':
+ if ($field['multiple']) {
+ foreach($node_field as $delta => $value) {
+ if ($node_field[$delta]['value']['link']) {
+ if (!link_validate_link($value['value']['link'])) {
+ form_set_error($field['field_name'] .']['. $delta. '][value][link', t('Not a valid URL.'));
+ }
+ }
+ }
+ }
+ else {
+ if ($node_field['value']['link']) {
+ if (!link_validate_link($node_field['value']['link'])) {
+ form_set_error($field['field_name'] .'][value][link', t('Not a valid URL.'));
+ }
+ }
+ }
+ return;
+
+ case 'process form values':
+ if ($field['multiple']) {
+ foreach($node_field as $delta => $value) {
+ if (!$node_field[$delta]['value']['attributes']['target'] || $node_field[$delta]['value']['attributes']['target'] == "default") {
+ unset($node_field[$delta]['value']['attributes']['target']);
+ }
+ }
+ }
+ else {
+ if (!$node_field['value']['attributes']['target'] || $node_field[$delta]['value']['attributes']['target'] == "default") {
+ unset($node_field['value']['attributes']['target']);
+ }
+ }
+ return;
+
+ case 'submit':
+ return;
+ }
+}
+
+/**
+ * Implementation of hook_field_view() which performs any translation necessary.
+ */
+function link_field_view($field, $value, $addlfields = array(), $node = NULL) {
+ // Add attributes defined at the widget level
+ if (is_array($value['attributes'])) {
+ foreach($value['attributes'] as $attribute => $attbvalue) {
+ if (isset($field['attributes'][$attribute]) && $field['attributes'][$attribute] == 'user') {
+ $attributes .= ' '.$attribute.'="'.$attbvalue.'"';
+ }
+ }
+ }
+ // Add attributes defined at the field level
+ if (is_array($field['attributes'])) {
+ foreach($field['attributes'] as $attribute => $attbvalue) {
+ if (!empty($attbvalue) && $attbvalue != 'default' && $attbvalue != 'user') {
+ $attributes .= ' '.$attribute.'="'.$attbvalue.'"';
+ }
+ }
+ }
+ // Build the link with a title
+ if (strlen(trim($value['title']))) {
+ $output = '<a href="'.$value['link'].'"'.$attributes.'>'.check_plain($value['title']).'</a>';
+ }
+ // Build the link with the URL as the title
+ else {
+ $output = '<a href="'.$value['link'].'"'.$attributes.'>'.$value['link'].'</a>';
+ }
+ return $output;
+}
+
+/**
+ * Implementation of hook_views_tables().
+ */
+function link_views_tables() {
+ $tables = array();
+
+ $fields = content_fields();
+ foreach ($fields as $field) {
+ if ($field['type'] == 'link') {
+ $tables['node_field_link_data_'. $field['field_name']] = array(
+ 'name' => 'node_field_link_data',
+ 'join' => array(
+ 'left' => array(
+ 'table' => 'node',
+ 'field' => 'vid',
+ ),
+ 'right' => array(
+ 'field' => 'vid',
+ ),
+ 'extra' => array('field_name' => $field['field_name']),
+ ),
+ 'fields' => array(
+ 'field_url' => array(
+ 'name' => 'Link URL: '. $field['field_name'],
+ 'sortable' => TRUE,
+ ),
+ 'field_title' => array(
+ 'name' => 'Link Title: '. $field['field_name'],
+ 'sortable' => TRUE,
+ ),
+ ),
+ 'sorts' => array(
+ 'field_url' => array('name' => 'Link URL: '. $field['field_name']),
+ 'field_title' => array('name' => 'Link Title: '. $field['field_name']),
+ ),
+ 'filters' => array(
+ 'field_url' => array(
+ 'name' => 'Link URL: '. $field['field_name'],
+ 'operator' => array(
+ '=' => 'is',
+ 'contains' => 'contains',
+ 'begins' => 'begins with',
+ 'ends' => 'ends wth',
+ 'LIKE' => 'matches pattern',
+ ),
+ 'operator-handler' => '_text_filter_operator',
+ ),
+ 'field_title' => array(
+ 'name' => 'Link Title: '. $field['field_name'],
+ 'operator' => array(
+ '=' => 'is',
+ 'contains' => 'contains',
+ 'begins' => 'begins with',
+ 'ends' => 'ends wth',
+ 'LIKE' => 'matches pattern',
+ ),
+ 'operator-handler' => '_text_filter_operator',
+ ),
+ ),
+ );
+ }
+ }
+
+ return $tables;
+}
+
+function link_validate_link($text) {
+ if (!preg_match(
+ // The protocols: http://
+ '/^((https|http|ftp|news):\/\/)?'.
+ '('.
+ // domains
+ '(([a-z0-9]([a-z0-9\-_]*\.)+)(aero|arpa|biz|com|coop|edu|gov|info|int|jobs|mil|museum|name|nato|net|org|pro|travel|[a-z]{2}))'.
+ // OR ip addresses
+ '|(\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3})'.
+ ')'.
+ // port number
+ '(:([0-9]{1,4}))?'.
+ // the rest of the path
+ '(\/[a-z0-9_\-\.~]+)*(\/([a-z0-9_\-\.]*)(\?[a-z0-9+_\-\.\/%=&]*)?)?'.
+ // forward slash 0 or 1 times
+ '(\/)?'.
+ // end of the expression, case insensitive
+ '$/i', $text, $m)) {
+ return false;
+ }
+ else {
+ $url = new stdClass();
+ $url->protocol = $m[2];
+ $url->hostname = strtolower($m[5]).strtolower($m[7]);
+ $url->ip = $m[8];
+ $url->port = $m[10];
+ return $url;
+ }
+} \ No newline at end of file