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6a488035 TO |
1 | <?php |
2 | ||
3 | /** | |
4 | * Maintain a set of markup/templates to inject inside various regions | |
5 | */ | |
6 | class CRM_Core_Region { | |
7 | static private $_instances = NULL; | |
8 | ||
9 | /** | |
d09edf64 | 10 | * Obtain the content for a given region. |
6a488035 TO |
11 | * |
12 | * @param string $name | |
6a0b768e TO |
13 | * @param bool $autocreate |
14 | * Whether to automatically create an empty region. | |
6a488035 TO |
15 | * @return CRM_Core_Region |
16 | */ | |
00be9182 | 17 | public static function &instance($name, $autocreate = TRUE) { |
353ffa53 | 18 | if ($autocreate && !isset(self::$_instances[$name])) { |
6a488035 TO |
19 | self::$_instances[$name] = new CRM_Core_Region($name); |
20 | } | |
21 | return self::$_instances[$name]; | |
22 | } | |
23 | ||
24 | /** | |
25 | * Symbolic name of this region | |
26 | * | |
27 | * @var string | |
28 | */ | |
29 | var $_name; | |
30 | ||
31 | /** | |
32 | * List of snippets to inject within region | |
33 | * | |
34 | * @var array; e.g. $this->_snippets[3]['type'] = 'template'; | |
35 | */ | |
36 | var $_snippets; | |
37 | ||
38 | /** | |
39 | * Whether the snippets array has been sorted | |
40 | * | |
41 | * @var boolean | |
42 | */ | |
43 | var $_isSorted; | |
44 | ||
a0ee3941 | 45 | /** |
100fef9d | 46 | * @param string $name |
a0ee3941 | 47 | */ |
6a488035 TO |
48 | public function __construct($name) { |
49 | // Templates injected into regions should normally be file names, but sometimes inline notation is handy. | |
50 | require_once 'CRM/Core/Smarty/resources/String.php'; | |
481a74f4 | 51 | civicrm_smarty_register_string_resource(); |
6a488035 TO |
52 | |
53 | $this->_name = $name; | |
54 | $this->_snippets = array(); | |
55 | ||
56 | // Placeholder which represents any of the default content generated by the main Smarty template | |
57 | $this->add(array( | |
58 | 'name' => 'default', | |
59 | 'type' => 'markup', | |
60 | 'markup' => '', | |
61 | 'weight' => 0, | |
62 | )); | |
63 | $this->_isSorted = TRUE; | |
64 | } | |
65 | ||
66 | /** | |
d09edf64 | 67 | * Add a snippet of content to a region. |
6a488035 TO |
68 | * |
69 | * @code | |
70 | * CRM_Core_Region::instance('page-header')->add(array( | |
71 | * 'markup' => '<div style="color:red">Hello!</div>', | |
72 | * )); | |
73 | * CRM_Core_Region::instance('page-header')->add(array( | |
74 | * 'script' => 'alert("Hello");', | |
75 | * )); | |
76 | * CRM_Core_Region::instance('page-header')->add(array( | |
77 | * 'template' => 'CRM/Myextension/Extra.tpl', | |
78 | * )); | |
79 | * CRM_Core_Region::instance('page-header')->add(array( | |
80 | * 'callback' => 'myextension_callback_function', | |
81 | * )); | |
82 | * @endcode | |
83 | * | |
84 | * Note: This function does not perform any extra encoding of markup, script code, or etc. If | |
85 | * you're passing in user-data, you must clean it yourself. | |
86 | * | |
5a4f6742 | 87 | * @param array $snippet |
6a0b768e | 88 | * Array; keys:. |
6a488035 TO |
89 | * - type: string (auto-detected for markup, template, callback, script, scriptUrl, jquery, style, styleUrl) |
90 | * - name: string, optional | |
91 | * - weight: int, optional; default=1 | |
92 | * - disabled: int, optional; default=0 | |
93 | * - markup: string, HTML; required (for type==markup) | |
94 | * - template: string, path; required (for type==template) | |
95 | * - callback: mixed; required (for type==callback) | |
96 | * - arguments: array, optional (for type==callback) | |
97 | * - script: string, Javascript code | |
98 | * - scriptUrl: string, URL of a Javascript file | |
99 | * - jquery: string, Javascript code which runs inside a jQuery(function($){...}); block | |
100 | * - style: string, CSS code | |
101 | * - styleUrl: string, URL of a CSS file | |
77b97be7 EM |
102 | * |
103 | * @return array | |
6a488035 TO |
104 | */ |
105 | public function add($snippet) { | |
106 | static $types = array('markup', 'template', 'callback', 'scriptUrl', 'script', 'jquery', 'style', 'styleUrl'); | |
107 | $defaults = array( | |
108 | 'region' => $this->_name, | |
109 | 'weight' => 1, | |
110 | 'disabled' => FALSE, | |
111 | ); | |
112 | $snippet += $defaults; | |
113 | if (!isset($snippet['type'])) { | |
114 | foreach ($types as $type) { | |
115 | // auto-detect | |
116 | if (isset($snippet[$type])) { | |
117 | $snippet['type'] = $type; | |
118 | break; | |
119 | } | |
120 | } | |
121 | } | |
122 | if (!isset($snippet['name'])) { | |
123 | $snippet['name'] = count($this->_snippets); | |
124 | } | |
aefd7f6b | 125 | |
2aa397bc | 126 | $this->_snippets[$snippet['name']] = $snippet; |
6a488035 TO |
127 | $this->_isSorted = FALSE; |
128 | return $snippet; | |
129 | } | |
130 | ||
a0ee3941 | 131 | /** |
100fef9d | 132 | * @param string $name |
a0ee3941 EM |
133 | * @param $snippet |
134 | */ | |
6a488035 TO |
135 | public function update($name, $snippet) { |
136 | $this->_snippets[$name] = array_merge($this->_snippets[$name], $snippet); | |
137 | $this->_isSorted = FALSE; | |
138 | } | |
139 | ||
a0ee3941 | 140 | /** |
aefd7f6b EM |
141 | * Get snippet. |
142 | * | |
100fef9d | 143 | * @param string $name |
a0ee3941 EM |
144 | * |
145 | * @return mixed | |
146 | */ | |
aefd7f6b EM |
147 | public function get($name) { |
148 | return !empty($this->_snippets[$name]) ? $this->_snippets[$name] : NULL; | |
6a488035 TO |
149 | } |
150 | ||
151 | /** | |
d09edf64 | 152 | * Render all the snippets in a region. |
6a488035 | 153 | * |
6a0b768e TO |
154 | * @param string $default |
155 | * HTML, the initial content of the region. | |
156 | * @param bool $allowCmsOverride | |
157 | * Allow CMS to override rendering of region. | |
6a488035 TO |
158 | * @return string, HTML |
159 | */ | |
160 | public function render($default, $allowCmsOverride = TRUE) { | |
161 | // $default is just another part of the region | |
162 | if (is_array($this->_snippets['default'])) { | |
163 | $this->_snippets['default']['markup'] = $default; | |
164 | } | |
165 | // We hand as much of the work off to the CMS as possible | |
166 | $cms = CRM_Core_Config::singleton()->userSystem; | |
167 | ||
168 | if (!$this->_isSorted) { | |
169 | uasort($this->_snippets, array('CRM_Core_Region', '_cmpSnippet')); | |
170 | $this->_isSorted = TRUE; | |
171 | } | |
172 | ||
173 | $smarty = CRM_Core_Smarty::singleton(); | |
174 | $html = ''; | |
175 | foreach ($this->_snippets as $snippet) { | |
176 | if ($snippet['disabled']) { | |
177 | continue; | |
178 | } | |
22e263ad | 179 | switch ($snippet['type']) { |
6a488035 TO |
180 | case 'markup': |
181 | $html .= $snippet['markup']; | |
182 | break; | |
2aa397bc | 183 | |
6a488035 TO |
184 | case 'template': |
185 | $tmp = $smarty->get_template_vars('snippet'); | |
186 | $smarty->assign('snippet', $snippet); | |
187 | $html .= $smarty->fetch($snippet['template']); | |
188 | $smarty->assign('snippet', $tmp); | |
189 | break; | |
2aa397bc | 190 | |
6a488035 | 191 | case 'callback': |
16fff44f | 192 | $args = isset($snippet['arguments']) ? $snippet['arguments'] : array(&$snippet, &$html); |
6a488035 TO |
193 | $html .= call_user_func_array($snippet['callback'], $args); |
194 | break; | |
2aa397bc | 195 | |
6a488035 TO |
196 | case 'scriptUrl': |
197 | if (!$allowCmsOverride || !$cms->addScriptUrl($snippet['scriptUrl'], $this->_name)) { | |
198 | $html .= sprintf("<script type=\"text/javascript\" src=\"%s\">\n</script>\n", $snippet['scriptUrl']); | |
199 | } | |
200 | break; | |
2aa397bc | 201 | |
6a488035 | 202 | case 'jquery': |
3cc60a06 | 203 | $snippet['script'] = sprintf("CRM.\$(function(\$) {\n%s\n});", $snippet['jquery']); |
e7483cbe | 204 | // no break - continue processing as script |
6a488035 TO |
205 | case 'script': |
206 | if (!$allowCmsOverride || !$cms->addScript($snippet['script'], $this->_name)) { | |
207 | $html .= sprintf("<script type=\"text/javascript\">\n%s\n</script>\n", $snippet['script']); | |
208 | } | |
209 | break; | |
2aa397bc | 210 | |
6a488035 TO |
211 | case 'styleUrl': |
212 | if (!$allowCmsOverride || !$cms->addStyleUrl($snippet['styleUrl'], $this->_name)) { | |
213 | $html .= sprintf("<link href=\"%s\" rel=\"stylesheet\" type=\"text/css\"/>\n", $snippet['styleUrl']); | |
214 | } | |
215 | break; | |
2aa397bc | 216 | |
6a488035 TO |
217 | case 'style': |
218 | if (!$allowCmsOverride || !$cms->addStyle($snippet['style'], $this->_name)) { | |
219 | $html .= sprintf("<style type=\"text/css\">\n%s\n</style>\n", $snippet['style']); | |
220 | } | |
221 | break; | |
2aa397bc | 222 | |
6a488035 TO |
223 | default: |
224 | require_once 'CRM/Core/Error.php'; | |
481a74f4 | 225 | CRM_Core_Error::fatal(ts('Snippet type %1 is unrecognized', |
353ffa53 | 226 | array(1 => $snippet['type']))); |
6a488035 TO |
227 | } |
228 | } | |
229 | return $html; | |
230 | } | |
231 | ||
a0ee3941 EM |
232 | /** |
233 | * @param $a | |
234 | * @param $b | |
235 | * | |
236 | * @return int | |
237 | */ | |
00be9182 | 238 | public static function _cmpSnippet($a, $b) { |
4f99ca55 TO |
239 | if ($a['weight'] < $b['weight']) { |
240 | return -1; | |
2aa397bc | 241 | } |
4f99ca55 TO |
242 | if ($a['weight'] > $b['weight']) { |
243 | return 1; | |
2aa397bc | 244 | } |
6a488035 | 245 | // fallback to name sort; don't really want to do this, but it makes results more stable |
4f99ca55 TO |
246 | if ($a['name'] < $b['name']) { |
247 | return -1; | |
2aa397bc | 248 | } |
4f99ca55 TO |
249 | if ($a['name'] > $b['name']) { |
250 | return 1; | |
2aa397bc | 251 | } |
6a488035 TO |
252 | return 0; |
253 | } | |
254 | ||
255 | /** | |
d09edf64 | 256 | * Add block of static HTML to a region. |
6a488035 | 257 | * |
6a0b768e TO |
258 | * @param string $markup |
259 | * HTML. | |
6a488035 | 260 | * |
353ffa53 TO |
261 | * public function addMarkup($markup) { |
262 | * return $this->add(array( | |
263 | * 'type' => 'markup', | |
264 | * 'markup' => $markup, | |
265 | * )); | |
266 | * } | |
267 | * | |
268 | * /** | |
d09edf64 | 269 | * Add a Smarty template file to a region. |
6a488035 TO |
270 | * |
271 | * Note: File is not evaluated until the page is rendered | |
272 | * | |
6a0b768e TO |
273 | * @param string $template |
274 | * Path to the Smarty template file. | |
6a488035 | 275 | * |
353ffa53 TO |
276 | * public function addTemplate($template) { |
277 | * return $this->add(array( | |
278 | * 'type' => 'template', | |
279 | * 'template' => $template, | |
280 | * )); | |
281 | * } | |
282 | * | |
283 | * /** | |
d09edf64 | 284 | * Use a callback function to extend a region. |
6a488035 TO |
285 | * |
286 | * @param mixed $callback | |
6a0b768e TO |
287 | * @param array $arguments |
288 | * Optional, array of parameters for callback; if omitted, the default arguments are ($snippetSpec, $html). | |
6a488035 | 289 | * |
353ffa53 TO |
290 | * public function addCallback($callback, $arguments = FALSE) { |
291 | * return $this->add(array( | |
292 | * 'type' => 'callback', | |
293 | * 'callback' => $callback, | |
294 | * 'arguments' => $arguments, | |
295 | * )); | |
296 | * } | |
297 | */ | |
96025800 | 298 | |
6a488035 | 299 | } |