1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
|
<?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;
}
}
/**
* Registers a particular action with a widget handler
*
* @param string $handler_name
* @param unknown_type $action
*/
function add_widget_save_action($handler_name, $action) {
global $CONFIG;
if (!isset($CONFIG->widgets->saveactions))
$CONFIG->widgets->saveactions = array();
if (!empty($handler_name)) {
$CONFIG->widgets->saveactions[$handler_name] = $action;
}
}
/**
* 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 or 2)
* @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 = 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;
}
}
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,
'location' => $context,
), 10000)) {
$widgetorder = array();
foreach($widgets as $widget) {
$widgetorder[$widget->order] = $widget;
}
return $widgetorder;
}
return false;
}
/**
* Displays a particular widget
*
* @param ElggObject $widget The widget to display
* @param boolean $edit Should we display edit mode?
* @return string The HTML for the widget, including JavaScript wrapper
*/
function display_widget(ElggObject $widget, $edit = false) {
if ($edit) {
$body = elgg_view("widgets/" . $widget->handler . "/edit", array('entity' => $widget));
} else {
$body = elgg_view("widgets/" . $widget->handler . "/view", array('entity' => $widget));
}
return elgg_view("widgets/wrapper",array('body' => $body, 'widget' => $widget, 'edit' => $edit));
}
/**
* 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 $column The column to display this widget in (1 or 2)
* @return true|false Depending on success
*/
function add_widget($user_guid, $handler, $context, $order = 0, $column = 1) {
if (empty($user_guid) || empty($context) || empty($handler))
return false;
if ($user = get_user($user_guid)) {
$widget = new ElggObject;
$widget->handler = $handler;
$widget->context = $context;
if (!$widget->save())
return false;
return save_widget_location($widget, $order, $column);
}
return false;
}
?>
|
