ILIAS  release_5-1 Revision 5.0.0-5477-g43f3e3fab5f
class.ilADTLocationSearchBridgeSingle.php
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1<?php
2
3require_once "Services/ADT/classes/Bridges/class.ilADTSearchBridgeSingle.php";
4
6{
7 protected $radius; // [int]
8
9 protected function isValidADTDefinition(ilADTDefinition $a_adt_def)
10 {
11 return ($a_adt_def instanceof ilADTLocationDefinition);
12 }
13
14
15 // table2gui / filter
16
17 public function loadFilter()
18 {
19 $value = $this->readFilter();
20 if($value !== null)
21 {
22 // :TODO:
23 }
24 }
25
26
27 // form
28
29 public function addToForm()
30 {
31 global $lng;
32
33 $adt = $this->getADT();
34
35 $default = false;
36 if($adt->isNull())
37 {
38 // see ilPersonalProfileGUI::addLocationToForm()
39
40 // use installation default
41 include_once("./Services/Maps/classes/class.ilMapUtil.php");
43 $adt->setLatitude($def["latitude"]);
44 $adt->setLongitude($def["longitude"]);
45 $adt->setZoom($def["zoom"]);
46
47 $default = true;
48 }
49
50 $optional = new ilCheckboxInputGUI($this->getTitle(), $this->addToElementId("tgl"));
51
52 if(!$default && !$adt->isNull())
53 {
54 $optional->setChecked(true);
55 }
56
57 $loc = new ilLocationInputGUI($lng->txt("location"), $this->getElementId());
58 $loc->setLongitude($adt->getLongitude());
59 $loc->setLatitude($adt->getLatitude());
60 $loc->setZoom($adt->getZoom());
61 $optional->addSubItem($loc);
62
63 $rad = new ilNumberInputGUI($lng->txt("form_location_radius"), $this->addToElementId("rad"));
64 $rad->setSize(4);
65 $rad->setSuffix($lng->txt("form_location_radius_km"));
66 $rad->setValue($this->radius);
67 $rad->setRequired(true);
68 $optional->addSubItem($rad);
69
70 $this->addToParentElement($optional);
71 }
72
73 protected function shouldBeImportedFromPost($a_post)
74 {
75 return (bool)$a_post["tgl"];
76 }
77
78 public function importFromPost(array $a_post = null)
79 {
80 $post = $this->extractPostValues($a_post);
81
82 if($post && $this->shouldBeImportedFromPost($post))
83 {
84 $tgl = $this->getForm()->getItemByPostVar($this->addToElementId("tgl"));
85 $tgl->setChecked(true);
86
87 $item = $this->getForm()->getItemByPostVar($this->getElementId());
88 $item->setLongitude($post["longitude"]);
89 $item->setLatitude($post["latitude"]);
90 $item->setZoom($post["zoom"]);
91
92 $this->radius = (int)$post["rad"];
93
94 $this->getADT()->setLongitude($post["longitude"]);
95 $this->getADT()->setLatitude($post["latitude"]);
96 $this->getADT()->setZoom($post["zoom"]);
97 }
98 else
99 {
100 // optional empty is valid
101 $this->force_valid = true;
102
103 $this->getADT()->setLongitude(null);
104 $this->getADT()->setLatitude(null);
105 $this->getADT()->setZoom(null);
106 $this->radius = null;
107 }
108 }
109
110 public function isValid()
111 {
112 return (parent::isValid() && ((int)$this->radius || (bool)$this->force_valid));
113 }
114
115
116 // bounding
117
126 protected function getBoundingBox($a_latitude, $a_longitude, $a_radius)
127 {
128 $earth_radius = 6371;
129
130 // http://www.d-mueller.de/blog/umkreissuche-latlong-und-der-radius/
131 $max_lat = $a_latitude + rad2deg($a_radius/$earth_radius);
132 $min_lat = $a_latitude - rad2deg($a_radius/$earth_radius);
133 $max_long = $a_longitude + rad2deg($a_radius/$earth_radius/cos(deg2rad($a_latitude)));
134 $min_long = $a_longitude - rad2deg($a_radius/$earth_radius/cos(deg2rad($a_latitude)));
135
136 return array(
137 "lat" => array("min"=>$min_lat, "max"=>$max_lat)
138 ,"long" => array("min"=>$min_long, "max"=>$max_long)
139 );
140 }
141
142
143 // db
144
145 public function getSQLCondition($a_element_id)
146 {
147 global $ilDB;
148
149 if(!$this->isNull() && $this->isValid())
150 {
151 $box = $this->getBoundingBox($this->getADT()->getLatitude(), $this->getADT()->getLongitude(), $this->radius);
152
153 $res = array();
154 $res[] = $a_element_id."_lat >= ".$ilDB->quote($box["lat"]["min"], "float");
155 $res[] = $a_element_id."_lat <= ".$ilDB->quote($box["lat"]["max"], "float");
156 $res[] = $a_element_id."_long >= ".$ilDB->quote($box["long"]["min"], "float");
157 $res[] = $a_element_id."_long <= ".$ilDB->quote($box["long"]["max"], "float");
158
159 return "(".implode(" AND ", $res).")";
160 }
161 }
162
163
164 // import/export
165
166 public function getSerializedValue()
167 {
168 if(!$this->isNull() && $this->isValid())
169 {
170 return serialize(array(
171 "lat" => $this->getADT()->getLatitude()
172 ,"long" => $this->getADT()->getLongitude()
173 ,"zoom" => $this->getADT()->getZoom()
174 ,"radius" => (int)$this->radius
175 ));
176 }
177 }
178
179 public function setSerializedValue($a_value)
180 {
181 $a_value = unserialize($a_value);
182 if(is_array($a_value))
183 {
184 $this->getADT()->setLatitude($a_value["lat"]);
185 $this->getADT()->setLongitude($a_value["long"]);
186 $this->getADT()->setZoom($a_value["zoom"]);
187 $this->radius = (int)$a_value["radius"];
188 }
189 }
190
191}
192
193?>
ADT definition base class.
getSQLCondition($a_element_id)
Get SQL condition for current value(s)
getSerializedValue()
Get current value(s) in serialized form (for easy persisting)
setSerializedValue($a_value)
Set current value(s) in serialized form (for easy persisting)
getBoundingBox($a_latitude, $a_longitude, $a_radius)
Get bounding box for location circum search.
shouldBeImportedFromPost($a_post)
Check if incoming values should be imported at all.
isValidADTDefinition(ilADTDefinition $a_adt_def)
Check if given ADT definition is valid.
importFromPost(array $a_post=null)
Import values from (search) form request POST data.
readFilter()
Load value(s) from filter store (in session)
extractPostValues(array $a_post=null)
Extract data from (post) values.
addToElementId($a_add)
Add sub-element.
addToParentElement(ilFormPropertyGUI $a_field)
Add form field to parent element.
getElementId()
Get element id.
This class represents a checkbox property in a property form.
This class represents a location property in a property form.
static getDefaultSettings()
Get default longitude, latitude and zoom.
This class represents a number property in a property form.
global $lng
Definition: privfeed.php:40
global $ilDB