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-rw-r--r--application/TimeZone.php101
1 files changed, 44 insertions, 57 deletions
diff --git a/application/TimeZone.php b/application/TimeZone.php
index 36a8fb12..c1869ef8 100644
--- a/application/TimeZone.php
+++ b/application/TimeZone.php
@@ -1,23 +1,42 @@
1<?php 1<?php
2/** 2/**
3 * Generates the timezone selection form and JavaScript. 3 * Generates a list of available timezone continents and cities.
4 * 4 *
5 * Note: 'UTC/UTC' is mapped to 'UTC' to form a valid option 5 * Two distinct array based on available timezones
6 * and the one selected in the settings:
7 * - (0) continents:
8 * + list of available continents
9 * + special key 'selected' containing the value of the selected timezone's continent
10 * - (1) cities:
11 * + list of available cities associated with their continent
12 * + special key 'selected' containing the value of the selected timezone's city (without the continent)
6 * 13 *
7 * Example: preselect Europe/Paris 14 * Example:
8 * list($htmlform, $js) = generateTimeZoneForm('Europe/Paris'); 15 * [
16 * [
17 * 'America',
18 * 'Europe',
19 * 'selected' => 'Europe',
20 * ],
21 * [
22 * ['continent' => 'America', 'city' => 'Toronto'],
23 * ['continent' => 'Europe', 'city' => 'Paris'],
24 * 'selected' => 'Paris',
25 * ],
26 * ];
9 * 27 *
28 * Notes:
29 * - 'UTC/UTC' is mapped to 'UTC' to form a valid option
30 * - a few timezone cities includes the country/state, such as Argentina/Buenos_Aires
31 * - these arrays are designed to build timezone selects in template files with any HTML structure
32 *
33 * @param array $installedTimeZones List of installed timezones as string
10 * @param string $preselectedTimezone preselected timezone (optional) 34 * @param string $preselectedTimezone preselected timezone (optional)
11 * 35 *
12 * @return array containing the generated HTML form and Javascript code 36 * @return array[] continents and cities
13 **/ 37 **/
14function generateTimeZoneForm($preselectedTimezone='') 38function generateTimeZoneData($installedTimeZones, $preselectedTimezone = '')
15{ 39{
16 // Select the server timezone
17 if ($preselectedTimezone == '') {
18 $preselectedTimezone = date_default_timezone_get();
19 }
20
21 if ($preselectedTimezone == 'UTC') { 40 if ($preselectedTimezone == 'UTC') {
22 $pcity = $pcontinent = 'UTC'; 41 $pcity = $pcontinent = 'UTC';
23 } else { 42 } else {
@@ -27,62 +46,30 @@ function generateTimeZoneForm($preselectedTimezone='')
27 $pcity = substr($preselectedTimezone, $spos+1); 46 $pcity = substr($preselectedTimezone, $spos+1);
28 } 47 }
29 48
30 // The list is in the form 'Europe/Paris', 'America/Argentina/Buenos_Aires' 49 $continents = [];
31 // We split the list in continents/cities. 50 $cities = [];
32 $continents = array(); 51 foreach ($installedTimeZones as $tz) {
33 $cities = array();
34
35 // TODO: use a template to generate the HTML/Javascript form
36
37 foreach (timezone_identifiers_list() as $tz) {
38 if ($tz == 'UTC') { 52 if ($tz == 'UTC') {
39 $tz = 'UTC/UTC'; 53 $tz = 'UTC/UTC';
40 } 54 }
41 $spos = strpos($tz, '/'); 55 $spos = strpos($tz, '/');
42 56
43 if ($spos !== false) { 57 // Ignore invalid timezones
44 $continent = substr($tz, 0, $spos); 58 if ($spos === false) {
45 $city = substr($tz, $spos+1); 59 continue;
46 $continents[$continent] = 1;
47
48 if (!isset($cities[$continent])) {
49 $cities[$continent] = '';
50 }
51 $cities[$continent] .= '<option value="'.$city.'"';
52 if ($pcity == $city) {
53 $cities[$continent] .= ' selected="selected"';
54 }
55 $cities[$continent] .= '>'.$city.'</option>';
56 } 60 }
57 }
58
59 $continentsHtml = '';
60 $continents = array_keys($continents);
61 61
62 foreach ($continents as $continent) { 62 $continent = substr($tz, 0, $spos);
63 $continentsHtml .= '<option value="'.$continent.'"'; 63 $city = substr($tz, $spos+1);
64 if ($pcontinent == $continent) { 64 $cities[] = ['continent' => $continent, 'city' => $city];
65 $continentsHtml .= ' selected="selected"'; 65 $continents[$continent] = true;
66 }
67 $continentsHtml .= '>'.$continent.'</option>';
68 } 66 }
69 67
70 // Timezone selection form 68 $continents = array_keys($continents);
71 $timezoneForm = 'Continent:'; 69 $continents['selected'] = $pcontinent;
72 $timezoneForm .= '<select name="continent" id="continent" onChange="onChangecontinent();">'; 70 $cities['selected'] = $pcity;
73 $timezoneForm .= $continentsHtml.'</select>';
74 $timezoneForm .= '&nbsp;&nbsp;&nbsp;&nbsp;City:';
75 $timezoneForm .= '<select name="city" id="city">'.$cities[$pcontinent].'</select><br />';
76
77 // Javascript handler - updates the city list when the user selects a continent
78 $timezoneJs = '<script>';
79 $timezoneJs .= 'function onChangecontinent() {';
80 $timezoneJs .= 'document.getElementById("city").innerHTML =';
81 $timezoneJs .= ' citiescontinent[document.getElementById("continent").value]; }';
82 $timezoneJs .= 'var citiescontinent = '.json_encode($cities).';';
83 $timezoneJs .= '</script>';
84 71
85 return array($timezoneForm, $timezoneJs); 72 return [$continents, $cities];
86} 73}
87 74
88/** 75/**