first import

sites/all/modules/ctools/views_content/plugins/relationships/node_from_view.inc

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+<?php
+
+/**
+ * @file
+ * Plugin to provide an relationship handler for node from view.
+ */
+
+/**
+ * Plugins are described by creating a $plugin array which will be used
+ * by the system that includes this file.
+ */
+$plugin = array(
+  'title' => t('Node from view'),
+  'keyword' => 'node',
+  'description' => t('Extract a node context from a view context of the base type node.'),
+  'required context' => new ctools_context_required(t('View'), 'view', array('base' => 'node')),
+  'context' => 'views_content_node_from_view_context',
+  'edit form' => 'views_content_node_from_view_settings_form',
+  'edit form validate' => 'views_content_node_from_view_settings_form_validate',
+  'defaults' => array('row' => 1),
+);
+
+/**
+ * Return a new context based on an existing context.
+ */
+function views_content_node_from_view_context($context, $conf, $placeholder = FALSE) {
+  // If unset it wants a generic, unfilled context, which is just NULL.
+  if (empty($context->data) || $placeholder) {
+    return ctools_context_create_empty('node', NULL);
+  }
+  $view = views_content_context_get_view($context);
+  // Ensure the view executes, but we don't need its output.
+  views_content_context_get_output($context);
+
+  $row = intval($conf['row']) - 1;
+  if (isset($view->result[$row])) {
+    $nid = $view->result[$row]->{$view->base_field};
+    if ($nid) {
+      $node = node_load($nid);
+      return ctools_context_create('node', $node);
+    }
+  }
+  return ctools_context_create_empty('node', NULL);
+}
+
+/**
+ * Settings form for the relationship.
+ */
+function views_content_node_from_view_settings_form($form, &$form_state) {
+  $conf = $form_state['conf'];
+  $form['row'] = array(
+    '#title' => t('Row number'),
+    '#type' => 'textfield',
+    '#default_value' => $conf['row'],
+  );
+
+  return $form;
+}
+
+function views_content_node_from_view_settings_form_validate($form, &$form_state) {
+  if (intval($form_state['values']['row']) <= 0) {
+    form_error($form['row'], t('Row number must be a positive integer value.'));
+  }
+}

sites/all/modules/ctools/views_content/plugins/relationships/term_from_view.inc

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+<?php
+
+/**
+ * @file
+ * Plugin to provide an relationship handler for term from view.
+ */
+
+/**
+ * Plugins are described by creating a $plugin array which will be used
+ * by the system that includes this file.
+ */
+$plugin = array(
+  'title' => t('Term from view'),
+  'keyword' => 'term',
+  'description' => t('Extract a term context from a view context of the base type term.'),
+  'required context' => new ctools_context_required(t('View'), 'view', array('base' => 'term_data')),
+  'context' => 'views_content_term_from_view_context',
+  'edit form' => 'views_content_term_from_view_settings_form',
+  'edit form validate' => 'views_content_term_from_view_settings_form_validate',
+  'defaults' => array('row' => 1),
+);
+
+/**
+ * Return a new context based on an existing context.
+ */
+function views_content_term_from_view_context($context, $conf, $placeholder = FALSE) {
+  // If unset it wants a generic, unfilled context, which is just NULL.
+  if (empty($context->data) || $placeholder) {
+    return ctools_context_create_empty('term', NULL);
+  }
+  $view = views_content_context_get_view($context);
+  // Ensure the view executes, but we don't need its output.
+  views_content_context_get_output($context);
+
+  $row = intval($conf['row']) - 1;
+  if (isset($view->result[$row])) {
+    $tid = $view->result[$row]->{$view->base_field};
+    if ($tid) {
+      $term = taxonomy_get_term($tid);
+      return ctools_context_create('term', $term);
+    }
+  }
+  return ctools_context_create_empty('term', NULL);
+}
+
+/**
+ * Settings form for the relationship.
+ */
+function views_content_term_from_view_settings_form($form, &$form_state) {
+  $conf = $form_state['conf'];
+  $form['row'] = array(
+    '#title' => t('Row number'),
+    '#type' => 'textfield',
+    '#default_value' => $conf['row'],
+  );
+
+  return $form;
+}
+
+function views_content_term_from_view_settings_form_validate($form, &$form_state) {
+  if (intval($form_state['values']['row']) <= 0) {
+    form_error($form['row'], t('Row number must be a positive integer value.'));
+  }
+}

sites/all/modules/ctools/views_content/plugins/relationships/user_from_view.inc

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+<?php
+
+/**
+ * @file
+ * Plugin to provide an relationship handler for user from term.
+ */
+
+/**
+ * Plugins are described by creating a $plugin array which will be used
+ * by the system that includes this file.
+ */
+$plugin = array(
+  'title' => t('User from view'),
+  'keyword' => 'user',
+  'description' => t('Extract a user context from a view context of the base type user.'),
+  'required context' => new ctools_context_required(t('View'), 'view', array('base' => 'users')),
+  'context' => 'views_content_user_from_view_context',
+  'edit form' => 'views_content_user_from_view_settings_form',
+  'edit form validate' => 'views_content_user_from_view_settings_form_validate',
+  'defaults' => array('row' => 1),
+);
+
+/**
+ * Return a new context based on an existing context.
+ */
+function views_content_user_from_view_context($context, $conf, $placeholder = FALSE) {
+  // If unset it wants a generic, unfilled context, which is just NULL.
+  if (empty($context->data) || $placeholder) {
+    return ctools_context_create_empty('user', NULL);
+  }
+  $view = views_content_context_get_view($context);
+  // Ensure the view executes, but we don't need its output.
+  views_content_context_get_output($context);
+
+  $row = intval($conf['row']) - 1;
+  if (isset($view->result[$row])) {
+    $uid = $view->result[$row]->{$view->base_field};
+    if ($uid) {
+      $user = user_load($uid);
+      return ctools_context_create('user', $user);
+    }
+  }
+  return ctools_context_create_empty('user', NULL);
+}
+
+/**
+ * Settings form for the relationship.
+ */
+function views_content_user_from_view_settings_form($form, &$form_state) {
+  $conf = $form_state['conf'];
+  $form['row'] = array(
+    '#title' => t('Row number'),
+    '#type' => 'textfield',
+    '#default_value' => $conf['row'],
+  );
+
+  return $form;
+}
+
+function views_content_user_from_view_settings_form_validate($form, &$form_state) {
+  if (intval($form_state['values']['row']) <= 0) {
+    form_error($form['row'], t('Row number must be a positive integer value.'));
+  }
+}

sites/all/modules/ctools/views_content/plugins/relationships/view_from_argument.inc

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+<?php
+
+/**
+ * @file
+ * Plugin to provide an relationship handler for a view by argument input settings.
+ */
+
+/**
+ * Plugins are described by creating a $plugin array which will be used
+ * by the system that includes this file.
+ */
+$plugin = array(
+  'title' => t('View From Argument'),
+  'description' => t('Creates a view context from argument input settings.'),
+  'context' => 'views_content_view_from_argument_context',
+  'get child' => 'views_content_view_from_argument_get_child',
+  'get children' => 'views_content_view_from_argument_get_children',
+);
+
+function views_content_view_from_argument_get_child($plugin, $parent, $child) {
+  list($name, $id) = explode('-', $child, 2);
+  $view = views_get_view($name);
+  if (!$view) {
+    return;
+  }
+
+  $view->set_display($id);
+  if ($view->current_display != $id) {
+    return;
+  }
+
+  $info = _views_content_get_context_from_display($view, $id, $parent, TRUE);
+  if ($info) {
+    return $info;
+  }
+  return;
+}
+
+function views_content_view_from_argument_get_children($plugin, $parent) {
+  $types = array();
+
+  $views = views_get_applicable_views('returns context');
+  foreach ($views as $data) {
+    list($view, $id) = $data;
+    $info = _views_content_get_context_from_display($view, $id, $parent, TRUE);
+    if ($info) {
+      $types[$info['name']] = $info;
+    }
+  }
+
+  return $types;
+}
+
+/**
+ * Return a new context based on an existing context.
+ */
+function views_content_view_from_argument_context($contexts, $conf) {
+  $name = $conf['name'];
+  list($plugin, $view_data) = explode(':', $name);
+  list($view_name, $display_id) = explode('-', $view_data);
+  $keys = array_keys($conf['context']);
+
+  if (empty($contexts[$keys[0]]->data)) {
+    return ctools_context_create_empty('view', NULL);
+  }
+
+  // Load our view up.
+  $data = views_get_view($view_name);
+  if ($data) {
+    // Set the display.
+    $data->set_display($display_id);
+    $context_keys = array_keys($contexts);
+    foreach ($data->display_handler->get_argument_input() as $id => $argument) {
+      if ($argument['type'] == 'context') {
+        $key = array_shift($context_keys);
+        if (isset($contexts [$key])) {
+          if (strpos($argument['context'], '.')) {
+            list($context, $converter) = explode('.', $argument['context'], 2);
+            $args[] = ctools_context_convert_context($contexts[$key], $converter, array('sanitize' => FALSE));
+          }
+          else {
+            $args[] = $contexts[$key]->argument;
+          }
+        }
+      }
+    }
+    // remove any trailing NULL arguments as these are non-args:
+    while (count($args) && end($args) === NULL) {
+      array_pop($args);
+    }
+    $data->set_arguments($args);
+    if ($path = $data->display_handler->get_option('inherit_panels_path')) {
+      $data->override_path = $_GET['q'];
+    }
+  }
+
+  if (isset($contexts[$keys[0]]->data)) {
+    return ctools_context_create('view', $data);
+  }
+}