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-rw-r--r--engine/lib/widgets.php871
1 files changed, 420 insertions, 451 deletions
diff --git a/engine/lib/widgets.php b/engine/lib/widgets.php
index 1186a8b55..699462a1b 100644
--- a/engine/lib/widgets.php
+++ b/engine/lib/widgets.php
@@ -1,451 +1,420 @@
-<?php
-
- /**
- * Elgg widgets library.
- * Contains code for handling widgets.
- *
- * @package Elgg
- * @subpackage Core
- * @license http://www.gnu.org/licenses/old-licenses/gpl-2.0.html GNU Public License version 2
- * @copyright Curverider Ltd 2008
- * @link http://elgg.org/
- */
-
- /**
- * Register a particular context for use with widgets.
- *
- * @param string $context The context we wish to enable context for
- */
- function use_widgets($context) {
-
- global $CONFIG;
- if (!isset($CONFIG->widgets))
- $CONFIG->widgets = new stdClass;
- if (!isset($CONFIG->widgets->contexts)) {
- $CONFIG->widgets->contexts = array();
- }
- if (!empty($context)) {
- $CONFIG->widgets->contexts[] = $context;
- }
-
- }
-
- /**
- * Determines whether or not the current context is using widgets
- *
- * @return true|false Depending on widget status
- */
- function using_widgets() {
-
- global $CONFIG;
- $context = get_context();
- if (isset($CONFIG->widgets->contexts) && is_array($CONFIG->widgets->contexts)) {
- if (in_array($context, $CONFIG->widgets->contexts)) return true;
- }
-
- return false;
-
- }
-
- /**
- * When given a widget entity and a new requested location, saves the new location
- * and also provides a sensible ordering for all widgets in that column
- *
- * @param ElggObject $widget The widget entity
- * @param int $order The order within the column
- * @param int $column The column (1, 2 or 3)
- * @return true|false Depending on success
- */
- function save_widget_location(ElggObject $widget, $order, $column) {
-
- if ($widget instanceof ElggObject) {
- if ($widget->subtype == "widget") {
-
- // If you can't move the widget, don't save a new location
- if (!$widget->draggable)
- return false;
-
- // Sanitise the column value
- if ($column != 1 || $column != 2 || $column != 3)
- $column = 1;
-
- $widget->column = (int) $column;
-
- $ordertmp = array();
-
- if ($entities = get_entities_from_metadata_multi(array(
- 'context' => $widget->context,
- 'column' => $column,
- ),'object','widget')) {
- foreach($entities as $entity) {
- $entityorder = $entity->order;
- if ($entityorder < $order) {
- $ordertmp[$entityorder] = $entity;
- }
- if ($entityorder >= $order) {
- $ordertmp[$entityorder + 10000] = $entity;
- }
- }
- }
-
- $ordertmp[$order] = $widget;
- ksort($ordertmp);
-
- $orderticker = 10;
- foreach($ordertmp as $orderval => $entity) {
- $entity->order = $orderticker;
- $orderticker += 10;
- }
-
- return true;
-
- } else {
- register_error($widget->subtype);
- }
-
- }
-
- return false;
-
- }
-
- /**
- * Get widgets for a particular context and column, in order of display
- *
- * @param int $user_guid The owner user GUID
- * @param string $context The context (profile, dashboard etc)
- * @param int $column The column (1 or 2)
- * @return array|false An array of widget ElggObjects, or false
- */
- function get_widgets($user_guid, $context, $column) {
-
- if ($widgets = get_user_objects_by_metadata($user_guid, "widget", array(
- 'column' => $column,
- 'context' => $context,
- ), 10000)) {
-
-
- $widgetorder = array();
- foreach($widgets as $widget) {
- $order = $widget->order;
- while(isset($widgetorder[$order])) {
- $order++;
- }
- $widgetorder[$order] = $widget;
- }
-
- ksort($widgetorder);
-
- return $widgetorder;
-
- }
-
- return false;
-
- }
-
- /**
- * Displays a particular widget
- *
- * @param ElggObject $widget The widget to display
- * @return string The HTML for the widget, including JavaScript wrapper
- */
- function display_widget(ElggObject $widget) {
-
- return elgg_view_entity($widget);
-
- }
-
- /**
- * Add a new widget
- *
- * @param int $user_guid User GUID to associate this widget with
- * @param string $handler The handler for this widget
- * @param string $context The page context for this widget
- * @param int $order The order to display this widget in
- * @param int $column The column to display this widget in (1, 2 or 3)
- * @return true|false Depending on success
- */
- function add_widget($user_guid, $handler, $context, $order = 0, $column = 1) {
-
- if (empty($user_guid) || empty($context) || empty($handler) || !widget_type_exists($handler))
- return false;
-
- if ($user = get_user($user_guid)) {
-
- $widget = new ElggObject;
- $widget->subtype = "widget";
- $widget->handler = $handler;
- $widget->context = $context;
- $widget->column = $column;
- $widget->order = $order;
- $widget->owner_guid = $user_guid;
- $widget->access_id = 1;
- if (!$widget->save())
- return false;
- // save_widget_location($widget, $order, $column);
- return true;
-
- }
-
- return false;
-
- }
-
- /**
- * Define a new widget type
- *
- * @param string $handler The identifier for the widget handler
- * @param string $name The name of the widget type
- * @param string $description A description for the widget type
- * @param string $context A comma-separated list of contexts where this widget is allowed (default: 'all')
- * @param true|false $multiple Whether or not multiple instances of this widget are allowed on a single dashboard (default: false)
- * @param string $position A comma-separated list of positions on the page (side or main) where this widget is allowed (default: "side,main")
- * @return true|false Depending on success
- */
-
- function add_widget_type($handler, $name, $description, $context = "all", $multiple = false, $positions = "side,main") {
-
- if (!empty($handler) && !empty($name)) {
-
- global $CONFIG;
-
- if (!isset($CONFIG->widgets))
- $CONFIG->widgets = new stdClass;
-
- if (!isset($CONFIG->widgets->handlers))
- $CONFIG->widgets->handlers = array();
-
- $handlerobj = new stdClass;
- $handlerobj->name = $name;
- $handlerobj->description = $description;
- $handlerobj->context = explode(",",$context);
- $handlerobj->multiple = $multiple;
- $handlerobj->positions = explode(",",$positions);
-
- $CONFIG->widgets->handlers[$handler] = $handlerobj;
-
- return true;
-
- }
-
- return false;
-
- }
-
- /**
- * Determines whether or not widgets with the specified handler have been defined
- *
- * @param string $handler The widget handler identifying string
- * @return true|false Whether or not those widgets exist
- */
- function widget_type_exists($handler) {
-
- global $CONFIG;
- if (!empty($CONFIG->widgets)
- && !empty($CONFIG->widgets->handlers)
- && is_array($CONFIG->widgets->handlers)
- && array_key_exists($handler, $CONFIG->widgets->handlers))
- return true;
-
- return false;
-
- }
-
- /**
- * Returns an array of stdClass objects representing the defined widget types
- *
- * @return array A list of types defined (if any)
- */
- function get_widget_types() {
-
- global $CONFIG;
- if (!empty($CONFIG->widgets)
- && !empty($CONFIG->widgets->handlers)
- && is_array($CONFIG->widgets->handlers)) {
-
- $context = get_context();
-
- foreach($CONFIG->widgets->handlers as $key => $handler) {
- if (!in_array('all',$handler->context) &&
- !in_array($context,$handler->context)) {
- unset($CONFIG->widgets->handlers[$key]);
- }
- }
-
- return $CONFIG->widgets->handlers;
-
- }
-
- return array();
-
- }
-
- /**
- * Saves a widget's settings (by passing an array of (name => value) pairs to save_{$handler}_widget)
- *
- * @param int $widget_guid The GUID of the widget we're saving to
- * @param array $params An array of name => value parameters
- */
- function save_widget_info($widget_guid, $params) {
-
- if ($widget = get_entity($widget_guid)) {
-
- $subtype = $widget->getSubtype();
-
- if ($subtype != "widget") return false;
- $handler = $widget->handler;
- if (empty($handler) || !widget_type_exists($handler)) return false;
-
- if (!$widget->canEdit()) return false;
-
- // Save the params to the widget
- if (is_array($params) && sizeof($params) > 0) {
- foreach($params as $name => $value) {
- error_log("ERP: $name". print_r($value, true));
- if (!empty($name) && !in_array($name,array(
- 'guid','owner_guid','site_guid'
- ))) {
- if (is_array($value))
- {
- error_log("ERP: Here");
- $widget->setMetaData($name, $value, "", true);
- }else
- $widget->$name = $value;
- }
- }
- $widget->save();
- }
-
- $function = "save_{$handler}_widget";
- if (is_callable($function)) {
- return $function($params);
- }
-
- return true;
-
- }
-
- return false;
-
- }
-
- function reorder_widgets_from_panel($panelstring1, $panelstring2, $panelstring3, $context, $owner) {
-
- $return = true;
-
- $mainwidgets = explode('::',$panelstring1);
- $sidewidgets = explode('::',$panelstring2);
- $rightwidgets = explode('::',$panelstring3);
-
- $handlers = array();
- $guids = array();
-
- if (is_array($mainwidgets) && sizeof($mainwidgets) > 0) {
- foreach($mainwidgets as $widget) {
-
- $guid = (int) $widget;
-
- if ("{$guid}" == "{$widget}") {
- $guids[1][] = $widget;
- } else {
- $handlers[1][] = $widget;
- }
-
- }
- }
- if (is_array($sidewidgets) && sizeof($sidewidgets) > 0) {
- foreach($sidewidgets as $widget) {
-
- $guid = (int) $widget;
-
- if ("{$guid}" == "{$widget}") {
- $guids[2][] = $widget;
- } else {
- $handlers[2][] = $widget;
- }
-
- }
- }
- if (is_array($rightwidgets) && sizeof($rightwidgets) > 0) {
- foreach($rightwidgets as $widget) {
-
- $guid = (int) $widget;
-
- if ("{$guid}" == "{$widget}") {
- $guids[3][] = $widget;
- } else {
- $handlers[3][] = $widget;
- }
-
- }
- }
-
- // Reorder existing widgets or delete ones that have vanished
- foreach (array(1,2,3) as $column) {
- if ($dbwidgets = get_widgets($owner,$context,$column)) {
-
- foreach($dbwidgets as $dbwidget) {
- if (in_array($dbwidget->getGUID(),$guids[1]) || in_array($dbwidget->getGUID(),$guids[2]) || in_array($dbwidget->getGUID(),$guids[3])) {
- if (in_array($dbwidget->getGUID(),$guids[1])) {
- $pos = array_search($dbwidget->getGUID(),$guids[1]);
- $col = 1;
- } else if (in_array($dbwidget->getGUID(),$guids[2])) {
- $pos = array_search($dbwidget->getGUID(),$guids[2]);
- $col = 2;
- } else {
- $pos = array_search($dbwidget->getGUID(),$guids[3]);
- $col = 3;
- }
- $pos = ($pos + 1) * 10;
- $dbwidget->column = $col;
- $dbwidget->order = $pos;
- } else {
- $dbguid = $dbwidget->getGUID();
- if (!$dbwidget->delete()) {
- $return = false;
- } else {
- // Remove state cookie
- setcookie('widget' + $dbquid, null);
- }
- }
- }
-
- }
- // Add new ones
- if (sizeof($guids[$column]) > 0) {
- foreach($guids[$column] as $key => $guid) {
- if ($guid == 0) {
- $pos = ($key + 1) * 10;
- $handler = $handlers[$column][$key];
- if (!add_widget($owner,$handler,$context,$pos,$column))
- $return = false;
- }
- }
- }
- }
-
- return $return;
-
- }
-
- /**
- * Function to initialise widgets functionality on Elgg init
- *
- */
- function widgets_init() {
-
- register_action('widgets/reorder');
- register_action('widgets/save');
- register_action('widgets/add');
-
- }
-
- // Register event
- register_elgg_event_handler('init','system','widgets_init');
-
- // Use widgets on the dashboard
- use_widgets('dashboard');
-
-
-?> \ No newline at end of file
+<?php
+/**
+ * Elgg widgets library.
+ * Contains code for handling widgets.
+ *
+ * @package Elgg.Core
+ * @subpackage Widgets
+ */
+
+/**
+ * Get widgets for a particular context
+ *
+ * The widgets are ordered for display and grouped in columns.
+ * $widgets = elgg_get_widgets(elgg_get_logged_in_user_guid(), 'dashboard');
+ * $first_column_widgets = $widgets[1];
+ *
+ * @param int $user_guid The owner user GUID
+ * @param string $context The context (profile, dashboard, etc)
+ *
+ * @return array An 2D array of ElggWidget objects
+ * @since 1.8.0
+ */
+function elgg_get_widgets($user_guid, $context) {
+ $options = array(
+ 'type' => 'object',
+ 'subtype' => 'widget',
+ 'owner_guid' => $user_guid,
+ 'private_setting_name' => 'context',
+ 'private_setting_value' => $context,
+ 'limit' => 0
+ );
+ $widgets = elgg_get_entities_from_private_settings($options);
+ if (!$widgets) {
+ return array();
+ }
+
+ $sorted_widgets = array();
+ foreach ($widgets as $widget) {
+ if (!isset($sorted_widgets[(int)$widget->column])) {
+ $sorted_widgets[(int)$widget->column] = array();
+ }
+ $sorted_widgets[(int)$widget->column][$widget->order] = $widget;
+ }
+
+ foreach ($sorted_widgets as $col => $widgets) {
+ ksort($sorted_widgets[$col]);
+ }
+
+ return $sorted_widgets;
+}
+
+/**
+ * Create a new widget instance
+ *
+ * @param int $owner_guid GUID of entity that owns this widget
+ * @param string $handler The handler for this widget
+ * @param string $context The context for this widget
+ * @param int $access_id If not specified, it is set to the default access level
+ *
+ * @return int|false Widget GUID or false on failure
+ * @since 1.8.0
+ */
+function elgg_create_widget($owner_guid, $handler, $context, $access_id = null) {
+ if (empty($owner_guid) || empty($handler) || !elgg_is_widget_type($handler)) {
+ return false;
+ }
+
+ $owner = get_entity($owner_guid);
+ if (!$owner) {
+ return false;
+ }
+
+ $widget = new ElggWidget;
+ $widget->owner_guid = $owner_guid;
+ $widget->container_guid = $owner_guid; // @todo - will this work for group widgets
+ if (isset($access_id)) {
+ $widget->access_id = $access_id;
+ } else {
+ $widget->access_id = get_default_access();
+ }
+
+ if (!$widget->save()) {
+ return false;
+ }
+
+ // private settings cannot be set until ElggWidget saved
+ $widget->handler = $handler;
+ $widget->context = $context;
+
+ return $widget->getGUID();
+}
+
+/**
+ * Can the user edit the widget layout
+ *
+ * Triggers a 'permissions_check', 'widget_layout' plugin hook
+ *
+ * @param string $context The widget context
+ * @param int $user_guid The GUID of the user (0 for logged in user)
+ *
+ * @return bool
+ * @since 1.8.0
+ */
+function elgg_can_edit_widget_layout($context, $user_guid = 0) {
+
+ $user = get_entity((int)$user_guid);
+ if (!$user) {
+ $user = elgg_get_logged_in_user_entity();
+ }
+
+ $return = false;
+ if (elgg_is_admin_logged_in()) {
+ $return = true;
+ }
+ if (elgg_get_page_owner_guid() == $user->guid) {
+ $return = true;
+ }
+
+ $params = array(
+ 'user' => $user,
+ 'context' => $context,
+ 'page_owner' => elgg_get_page_owner_entity()
+ );
+ return elgg_trigger_plugin_hook('permissions_check', 'widget_layout', $params, $return);
+}
+
+/**
+ * Regsiter a widget type
+ *
+ * This should be called by plugins in their init function.
+ *
+ * @param string $handler The identifier for the widget handler
+ * @param string $name The name of the widget type
+ * @param string $description A description for the widget type
+ * @param string $context A comma-separated list of contexts where this
+ * widget is allowed (default: 'all')
+ * @param bool $multiple Whether or not multiple instances of this widget
+ * are allowed in a single layout (default: false)
+ *
+ * @return bool
+ * @since 1.8.0
+ */
+function elgg_register_widget_type($handler, $name, $description, $context = "all", $multiple = false) {
+
+ if (!$handler || !$name) {
+ return false;
+ }
+
+ global $CONFIG;
+
+ if (!isset($CONFIG->widgets)) {
+ $CONFIG->widgets = new stdClass;
+ }
+ if (!isset($CONFIG->widgets->handlers)) {
+ $CONFIG->widgets->handlers = array();
+ }
+
+ $handlerobj = new stdClass;
+ $handlerobj->name = $name;
+ $handlerobj->description = $description;
+ $handlerobj->context = explode(",", $context);
+ $handlerobj->multiple = $multiple;
+
+ $CONFIG->widgets->handlers[$handler] = $handlerobj;
+
+ return true;
+}
+
+/**
+ * Remove a widget type
+ *
+ * @param string $handler The identifier for the widget
+ *
+ * @return void
+ * @since 1.8.0
+ */
+function elgg_unregister_widget_type($handler) {
+ global $CONFIG;
+
+ if (!isset($CONFIG->widgets)) {
+ return;
+ }
+
+ if (!isset($CONFIG->widgets->handlers)) {
+ return;
+ }
+
+ if (isset($CONFIG->widgets->handlers[$handler])) {
+ unset($CONFIG->widgets->handlers[$handler]);
+ }
+}
+
+/**
+ * Has a widget type with the specified handler been registered
+ *
+ * @param string $handler The widget handler identifying string
+ *
+ * @return bool Whether or not that widget type exists
+ * @since 1.8.0
+ */
+function elgg_is_widget_type($handler) {
+ global $CONFIG;
+
+ if (!empty($CONFIG->widgets) &&
+ !empty($CONFIG->widgets->handlers) &&
+ is_array($CONFIG->widgets->handlers) &&
+ array_key_exists($handler, $CONFIG->widgets->handlers)) {
+
+ return true;
+ }
+
+ return false;
+}
+
+/**
+ * Get the widget types for a context
+ *
+ * The widget types are stdClass objects.
+ *
+ * @param string $context The widget context or empty string for current context
+ * @param bool $exact Only return widgets registered for this context (false)
+ *
+ * @return array
+ * @since 1.8.0
+ */
+function elgg_get_widget_types($context = "", $exact = false) {
+ global $CONFIG;
+
+ if (empty($CONFIG->widgets) ||
+ empty($CONFIG->widgets->handlers) ||
+ !is_array($CONFIG->widgets->handlers)) {
+ // no widgets
+ return array();
+ }
+
+ if (!$context) {
+ $context = elgg_get_context();
+ }
+
+ $widgets = array();
+ foreach ($CONFIG->widgets->handlers as $key => $handler) {
+ if ($exact) {
+ if (in_array($context, $handler->context)) {
+ $widgets[$key] = $handler;
+ }
+ } else {
+ if (in_array('all', $handler->context) || in_array($context, $handler->context)) {
+ $widgets[$key] = $handler;
+ }
+ }
+ }
+
+ return $widgets;
+}
+
+/**
+ * Regsiter entity of object, widget as ElggWidget objects
+ *
+ * @return void
+ * @access private
+ */
+function elgg_widget_run_once() {
+ add_subtype("object", "widget", "ElggWidget");
+}
+
+/**
+ * Function to initialize widgets functionality
+ *
+ * @return void
+ * @access private
+ */
+function elgg_widgets_init() {
+ elgg_register_action('widgets/save');
+ elgg_register_action('widgets/add');
+ elgg_register_action('widgets/move');
+ elgg_register_action('widgets/delete');
+ elgg_register_action('widgets/upgrade', '', 'admin');
+
+ run_function_once("elgg_widget_run_once");
+}
+
+/**
+ * Gets a list of events to create default widgets for and
+ * register menu items for default widgets with the admin section.
+ *
+ * A plugin that wants to register a new context for default widgets should
+ * register for the plugin hook 'get_list', 'default_widgets'. The handler
+ * can register the new type of default widgets by adding an associate array to
+ * the return value array like this:
+ * array(
+ * 'name' => elgg_echo('profile'),
+ * 'widget_context' => 'profile',
+ * 'widget_columns' => 3,
+ *
+ * 'event' => 'create',
+ * 'entity_type' => 'user',
+ * 'entity_subtype' => ELGG_ENTITIES_ANY_VALUE,
+ * );
+ *
+ * The first set of keys define information about the new type of default
+ * widgets and the second set determine what event triggers the creation of the
+ * new widgets.
+ *
+ * @return void
+ * @access private
+ */
+function elgg_default_widgets_init() {
+ global $CONFIG;
+ $default_widgets = elgg_trigger_plugin_hook('get_list', 'default_widgets', null, array());
+
+ $CONFIG->default_widget_info = $default_widgets;
+
+ if ($default_widgets) {
+ elgg_register_admin_menu_item('configure', 'default_widgets', 'appearance');
+
+ // override permissions for creating widget on logged out / just created entities
+ elgg_register_plugin_hook_handler('container_permissions_check', 'object', 'elgg_default_widgets_permissions_override');
+
+ // only register the callback once per event
+ $events = array();
+ foreach ($default_widgets as $info) {
+ $events[$info['event'] . ',' . $info['entity_type']] = $info;
+ }
+ foreach ($events as $info) {
+ elgg_register_event_handler($info['event'], $info['entity_type'], 'elgg_create_default_widgets');
+ }
+ }
+}
+
+/**
+ * Creates default widgets
+ *
+ * This plugin hook handler is registered for events based on what kinds of
+ * default widgets have been registered. See elgg_default_widgets_init() for
+ * information on registering new default widget contexts.
+ *
+ * @param string $event The event
+ * @param string $type The type of object
+ * @param ElggEntity $entity The entity being created
+ * @return void
+ * @access private
+ */
+function elgg_create_default_widgets($event, $type, $entity) {
+ $default_widget_info = elgg_get_config('default_widget_info');
+
+ if (!$default_widget_info || !$entity) {
+ return;
+ }
+
+ $type = $entity->getType();
+ $subtype = $entity->getSubtype();
+
+ // event is already guaranteed by the hook registration.
+ // need to check subtype and type.
+ foreach ($default_widget_info as $info) {
+ if ($info['entity_type'] == $type) {
+ if ($info['entity_subtype'] == ELGG_ENTITIES_ANY_VALUE || $info['entity_subtype'] == $subtype) {
+
+ // need to be able to access everything
+ $old_ia = elgg_set_ignore_access(true);
+ elgg_push_context('create_default_widgets');
+
+ // pull in by widget context with widget owners as the site
+ // not using elgg_get_widgets() because it sorts by columns and we don't care right now.
+ $options = array(
+ 'type' => 'object',
+ 'subtype' => 'widget',
+ 'owner_guid' => elgg_get_site_entity()->guid,
+ 'private_setting_name' => 'context',
+ 'private_setting_value' => $info['widget_context'],
+ 'limit' => 0
+ );
+
+ $widgets = elgg_get_entities_from_private_settings($options);
+ /* @var ElggWidget[] $widgets */
+
+ foreach ($widgets as $widget) {
+ // change the container and owner
+ $new_widget = clone $widget;
+ $new_widget->container_guid = $entity->guid;
+ $new_widget->owner_guid = $entity->guid;
+
+ // pull in settings
+ $settings = get_all_private_settings($widget->guid);
+
+ foreach ($settings as $name => $value) {
+ $new_widget->$name = $value;
+ }
+
+ $new_widget->save();
+ }
+
+ elgg_set_ignore_access($old_ia);
+ elgg_pop_context();
+ }
+ }
+ }
+}
+
+/**
+ * Overrides permissions checks when creating widgets for logged out users.
+ *
+ * @param string $hook The permissions hook.
+ * @param string $type The type of entity being created.
+ * @param string $return Value
+ * @param mixed $params Params
+ * @return true|null
+ * @access private
+ */
+function elgg_default_widgets_permissions_override($hook, $type, $return, $params) {
+ if ($type == 'object' && $params['subtype'] == 'widget') {
+ return elgg_in_context('create_default_widgets') ? true : null;
+ }
+
+ return null;
+}
+
+elgg_register_event_handler('init', 'system', 'elgg_widgets_init');
+// register default widget hooks from plugins
+elgg_register_event_handler('ready', 'system', 'elgg_default_widgets_init');
generated by cgit v1.2.3 (git 2.39.1) at 2025-11-13 22:12:11 +0000