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Some updates to the wireRegion()/region() function to support locking prepend or append

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This commit is contained in:
Ryan Cramer
2016-12-14 11:36:26 -05:00
parent 2b9a7adbcb
commit 7e262fa60d
1 changed files with 15 additions and 5 deletions
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20
wire/core/Functions.php
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@@ -801,13 +801,16 @@ function wireIsCallable($var, $syntaxOnly = false, &$callableName = '') {
* - Specify "*" to retrieve all defined regions in an array.
* - Prepend a "+" to the region name to have it prepend your given value to any existing value.
* - Append a "+" to the region name to have it append your given value to any existing value.
* - Prepend a "++" to region name to make future calls without "+" automatically prepend.
* - Append a "++" to region name to make future calls without "+" to automatically append.
* @param null|string $value If setting a region, the text that you want to set.
* @return string|null|bool|array Returns string of text when getting a region, NULL if region not set, or TRUE if setting region.
*
*/
function wireRegion($key, $value = null) {
static $regions = array();
static $locked = array();
if(empty($key) || $key === '*') {
// all regions
@@ -822,17 +825,24 @@ function wireRegion($key, $value = null) {
} else {
// set region
$pos = strpos($key, '+');
if($pos !== false) $key = trim($key, '+');
if($pos !== false) {
$lock = strpos($key, '++') !== false;
$key = trim($key, '+');
if($lock !== false && !isset($locked[$key])) {
$locked[$key] = $lock === 0 ? '^' : '$'; // prepend : append
}
}
$lock = isset($locked[$key]) ? $locked[$key] : '';
if(!isset($regions[$key])) $regions[$key] = '';
if($pos === 0) {
if($pos === 0 || ($pos === false && $lock == '^')) {
// prepend
$regions[$key] = $value . $regions[$key];
} else if($pos) {
} else if($pos || ($pos === false && $lock == '$')) {
// append
$regions[$key] .= $value;
} else if($value === '') {
// clear region
unset($regions[$key]);
if(!$lock) unset($regions[$key]);
} else {
// insert/replace
$regions[$key] = $value;