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<?php
# Copyright (c) 2008 - Marcus Lunzenauer <mlunzena@uos.de>
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
/**
* Provides functionality for working with JavaScript in your views.
*
* @package flexi
* @subpackage helper
*
* @author Marcus Lunzenauer (mlunzena@uos.de)
* @author David Heinemeier Hansson
* @copyright (c) Authors
* @version $Id: js_helper.php 3437 2006-05-27 11:38:58Z mlunzena $
*/
class JsHelper {
/**
* Returns a link that'll trigger a javascript function using the
* onclick handler and return false after the fact.
*
* Example:
* JsHelper::link_to_function('Greeting', "alert('Hello world!')");
*
* @param type <description>
* @param type <description>
* @param type <description>
*
* @return type <description>
*/
function link_to_function($name, $function, $html = array()) {
$html['href'] = isset($html['href']) ? $html['href'] : '#';
$html['onclick'] = $function.'; return false;';
return TagHelper::content_tag('a', $name, $html);
}
/**
* Returns a link that'll trigger a JavaScript function using the onclick
* handler.
*
* Examples:
* JsHelper::button_to_function("Greeting", "alert('Hello world!')");
*
* @param type <description>
* @param type <description>
* @param type <description>
*
* @return type <description>
*/
function button_to_function($name, $function, $html_options = array()) {
$html_options['type'] = 'button';
$html_options['value'] = $name;
$html_options['onclick'] = sprintf('%s%s;',
isset($html_options['onclick']) ? $html_options['onclick'] . '; ' : '',
$function);
return TagHelper::tag('input', $html_options);
}
/**
* Escape carrier returns and single and double quotes for Javascript
* segments.
*
* @param type <description>
*
* @return type <description>
*/
function escape_javascript($javascript = '') {
$pattern = array(); $replace = array();
$pattern[] = '/\\\\/'; $replace[] = '\\\\\\';
$pattern[] = '/<\//'; $replace[] = '<\\/';
$pattern[] = "/\r\n/"; $replace[] = '\n';
$pattern[] = "/\n/"; $replace[] = '\n';
$pattern[] = "/\r/"; $replace[] = '\n';
$pattern[] = '/"/'; $replace[] = '\\"';
$pattern[] = "/'/"; $replace[] = "\\'";
$javascript = preg_replace($pattern, $replace, $javascript);
return $javascript;
}
/**
* Returns a JavaScript tag with the '$content' inside.
* Example:
* JsHelper::javascript_tag("alert('All is good')");
* => <script type="text/javascript">alert('All is good')</script>
*
* @param type <description>
*
* @return type <description>
*/
function javascript_tag($content) {
return TagHelper::content_tag('script',
JsHelper::js_cdata_section($content),
array('type' => 'text/javascript'));
}
/**
* @ignore
*/
function js_cdata_section($content) {
return "\n//".TagHelper::cdata_section("\n$content\n//")."\n";
}
/**
* @ignore
*/
function options_for_javascript($opt) {
$opts = array();
foreach ($opt as $key => $value)
$opts[] = "$key:$value";
sort($opts);
return '{'.join(', ', $opts).'}';
}
}
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