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
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
|
<?php
/**
* TJavaScript class file
*
* @author Wei Zhuo<weizhuo[at]gmail[dot]com>
* @link http://www.pradosoft.com/
* @copyright Copyright © 2005 PradoSoft
* @license http://www.pradosoft.com/license/
* @version $Id$
* @package System.Web.Javascripts
*/
/**
* TJavaScript class.
*
* TJavaScript is a utility class containing commonly-used javascript-related
* functions.
*
* @author Wei Zhuo<weizhuo[at]gmail[dot]com>
* @version $Id$
* @package System.Web.Javascripts
* @since 3.0
*/
class TJavaScript
{
/**
* @var TJSON JSON decoder and encoder instance
*/
private static $_json;
/**
* Renders a list of javascript files
* @param array URLs to the javascript files
* @return string rendering result
*/
public static function renderScriptFiles($files)
{
$str='';
foreach($files as $file)
$str.= self::renderScriptFile($file);
return $str;
}
/**
* Renders a javascript file
* @param string URL to the javascript file
* @return string rendering result
*/
public static function renderScriptFile($file)
{
return '<script type="text/javascript" src="'.THttpUtility::htmlEncode($file)."\"></script>\n";
}
/**
* Renders a list of javascript blocks
* @param array javascript blocks
* @return string rendering result
*/
public static function renderScriptBlocks($scripts)
{
if(count($scripts))
return "<script type=\"text/javascript\">\n/*<![CDATA[*/\n".implode("\n",$scripts)."\n/*]]>*/\n</script>\n";
else
return '';
}
/**
* Renders javascript block
* @param string javascript block
* @return string rendering result
*/
public static function renderScriptBlock($script)
{
return "<script type=\"text/javascript\">\n/*<![CDATA[*/\n{$script}\n/*]]>*/\n</script>\n";
}
/**
* Quotes a javascript string.
* After processing, the string can be safely enclosed within a pair of
* quotation marks and serve as a javascript string.
* @param string string to be quoted
* @param boolean whether this string is used as a URL
* @return string the quoted string
*/
public static function quoteString($js,$forUrl=false)
{
if($forUrl)
return strtr($js,array('%'=>'%25',"\t"=>'\t',"\n"=>'\n',"\r"=>'\r','"'=>'\"','\''=>'\\\'','\\'=>'\\\\'));
else
return strtr($js,array("\t"=>'\t',"\n"=>'\n',"\r"=>'\r','"'=>'\"','\''=>'\\\'','\\'=>'\\\\'));
}
/**
* @return string considers the string as raw javascript function code
*/
public static function quoteFunction($js)
{
if(self::isFunction($js))
return $js;
else
return 'javascript:'.$js;
}
/**
* @return boolean true if string is raw javascript function code, i.e., if
* the string begins with <tt>javascript:</tt>
*/
public static function isFunction($js)
{
return preg_match('/^\s*javascript:/i', $js);
}
/**
* Encodes a PHP variable into javascript representation.
*
* Example:
* <code>
* $options['onLoading'] = "doit";
* $options['onComplete'] = "more";
* echo TJavaScript::encode($options);
* //expects the following javascript code
* // {'onLoading':'doit','onComplete':'more'}
* </code>
*
* For higher complexity data structures use {@link jsonEncode} and {@link jsonDecode}
* to serialize and unserialize.
*
* Note: strings begining with <tt>javascript:</tt> will be considered as
* raw javascript code and no encoding of that string will be enforced.
*
* @param mixed PHP variable to be encoded
* @param boolean whether the output is a map or a list.
* @return string the encoded string
*/
public static function encode($value,$toMap=true)
{
if(is_string($value))
{
if(($n=strlen($value))>2)
{
$first=$value[0];
$last=$value[$n-1];
if(($first==='[' && $last===']') || ($first==='{' && $last==='}'))
return $value;
}
// if string begins with javascript: return the raw string minus the prefix
if(self::isFunction($value))
return preg_replace('/^\s*javascript:/', '', $value);
else
return "'".self::quoteString($value)."'";
}
else if(is_bool($value))
return $value?'true':'false';
else if(is_array($value))
{
$results='';
if(($n=count($value))>0 && array_keys($value)!==range(0,$n-1))
{
foreach($value as $k=>$v)
{
if($v!=='')
{
if($results!=='')
$results.=',';
$results.="'$k':".self::encode($v,$toMap);
}
}
return '{'.$results.'}';
}
else
{
foreach($value as $v)
{
if($v!=='')
{
if($results!=='')
$results.=',';
$results.=self::encode($v,$toMap);
}
}
return '['.$results.']';
}
}
else if(is_integer($value))
return "$value";
else if(is_float($value))
{
if($value===-INF)
return 'Number.NEGATIVE_INFINITY';
else if($value===INF)
return 'Number.POSITIVE_INFINITY';
else
return "$value";
}
else if(is_object($value))
return self::encode(get_object_vars($value),$toMap);
else if($value===null)
return 'null';
else
return '';
}
/**
* Encodes a PHP variable into javascript string.
* This method invokes {@TJSON} utility class to perform the encoding.
* @param mixed variable to be encoded
* @return string encoded string
*/
public static function jsonEncode($value)
{
if(is_null(self::$_json))
self::$_json = Prado::createComponent('System.Web.Javascripts.TJSON');
return self::$_json->encode($value);
}
/**
* Decodes a javascript string into PHP variable.
* This method invokes {@TJSON} utility class to perform the decoding.
* @param string string to be decoded
* @return mixed decoded variable
*/
public static function jsonDecode($value)
{
if(is_null(self::$_json))
self::$_json = Prado::createComponent('System.Web.Javascripts.TJSON');
return self::$_json->decode($value);
}
}
?>
|
