Files
portal-legacy/lib/symfony/helper/JavascriptHelper.php
Chris Sewell cf140a2e97 initial commit
2012-11-28 03:55:08 -05:00

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PHP
Executable File

<?php
/*
* This file is part of the symfony package.
* (c) 2004-2006 Fabien Potencier <fabien.potencier@symfony-project.com>
* (c) 2004 David Heinemeier Hansson
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
/**
* JavascriptHelper.
*
* @package symfony
* @subpackage helper
* @author Fabien Potencier <fabien.potencier@symfony-project.com>
* @author John Christopher <john.christopher@symfony-project.com>
* @author David Heinemeier Hansson
* @version SVN: $Id: JavascriptHelper.php 4754 2007-07-31 09:08:30Z fabien $
*/
/*
* Provides a set of helpers for calling JavaScript functions and, most importantly,
* to call remote methods using what has been labelled AJAX[http://www.adaptivepath.com/publications/essays/archives/000385.php].
* This means that you can call actions in your controllers without reloading the page,
* but still update certain parts of it using injections into the DOM.
* The common use case is having a form that adds a new element to a list without reloading the page.
*
* To be able to use the JavaScript helpers, you must include the Prototype JavaScript Framework
* and for some functions script.aculo.us (which both come with symfony) on your pages.
* Choose one of these options:
*
* * Use <tt><?php echo javascript_include_tag :defaults ?></tt> in the HEAD section of your page (recommended):
* The function will return references to the JavaScript files created by the +rails+ command in your
* <tt>public/javascripts</tt> directory. Using it is recommended as the browser can then cache the libraries
* instead of fetching all the functions anew on every request.
* * Use <tt><?php echo javascript_include_tag 'prototype' ?></tt>: As above, but will only include the Prototype core library,
* which means you are able to use all basic AJAX functionality. For the script.aculo.us-based JavaScript helpers,
* like visual effects, autocompletion, drag and drop and so on, you should use the method described above.
* * Use <tt><?php echo define_javascript_functions ?></tt>: this will copy all the JavaScript support functions within a single
* script block.
*
* For documentation on +javascript_include_tag+ see ActionView::Helpers::AssetTagHelper.
*
* If you're the visual type, there's an AJAX movie[http://www.rubyonrails.com/media/video/rails-ajax.mov] demonstrating
* the use of form_remote_tag.
*/
function get_callbacks()
{
static $callbacks;
if (!$callbacks)
{
$callbacks = array_merge(array(
'uninitialized', 'loading', 'loaded', 'interactive', 'complete', 'failure', 'success'
), range(100, 599));
}
return $callbacks;
}
function get_ajax_options()
{
static $ajax_options;
if (!$ajax_options)
{
$ajax_options = array_merge(array(
'before', 'after', 'condition', 'url', 'asynchronous', 'method',
'insertion', 'position', 'form', 'with', 'update', 'script'
), get_callbacks());
}
return $ajax_options;
}
/**
* Returns a link that'll trigger a javascript function using the
* onclick handler and return false after the fact.
*
* Examples:
* <?php echo link_to_function('Greeting', "alert('Hello world!')") ?>
* <?php echo link_to_function(image_tag('delete'), "if confirm('Really?'){ do_delete(); }") ?>
*/
function link_to_function($name, $function, $html_options = array())
{
$html_options = _parse_attributes($html_options);
$html_options['href'] = isset($html_options['href']) ? $html_options['href'] : '#';
$html_options['onclick'] = $function.'; return false;';
return content_tag('a', $name, $html_options);
}
/**
* Returns a button that'll trigger a javascript function using the
* onclick handler and return false after the fact.
*
* Examples:
* <?php echo button_to_function('Greeting', "alert('Hello world!')") ?>
*/
function button_to_function($name, $function, $html_options = array())
{
$html_options = _parse_attributes($html_options);
$html_options['onclick'] = $function.'; return false;';
$html_options['type'] = 'button';
$html_options['value'] = $name;
return tag('input', $html_options);
}
/**
* Returns an html button to a remote action defined by 'url' (using the
* 'url_for()' format) that's called in the background using XMLHttpRequest.
*
* See link_to_remote() for details.
*
*/
function button_to_remote($name, $options = array(), $html_options = array())
{
return button_to_function($name, remote_function($options), $html_options);
}
/**
* Returns a link to a remote action defined by 'url'
* (using the 'url_for()' format) that's called in the background using
* XMLHttpRequest. The result of that request can then be inserted into a
* DOM object whose id can be specified with 'update'.
* Usually, the result would be a partial prepared by the controller with
* either 'render_partial()'.
*
* Examples:
* <?php echo link_to_remote('Delete this post'), array(
* 'update' => 'posts',
* 'url' => 'destroy?id='.$post.id,
* )) ?>
* <?php echo link_to_remote(image_tag('refresh'), array(
* 'update' => 'emails',
* 'url' => '@list_emails',
* )) ?>
*
* You can also specify a hash for 'update' to allow for
* easy redirection of output to an other DOM element if a server-side error occurs:
*
* Example:
* <?php echo link_to_remote('Delete this post', array(
* 'update' => array('success' => 'posts', 'failure' => 'error'),
* 'url' => 'destroy?id='.$post.id,
* )) ?>
*
* Optionally, you can use the 'position' parameter to influence
* how the target DOM element is updated. It must be one of
* 'before', 'top', 'bottom', or 'after'.
*
* By default, these remote requests are processed asynchronous during
* which various JavaScript callbacks can be triggered (for progress indicators and
* the likes). All callbacks get access to the 'request' object,
* which holds the underlying XMLHttpRequest.
*
* To access the server response, use 'request.responseText', to
* find out the HTTP status, use 'request.status'.
*
* Example:
* <?php echo link_to_remote($word, array(
* 'url' => '@undo?n='.$word_counter,
* 'complete' => 'undoRequestCompleted(request)'
* )) ?>
*
* The callbacks that may be specified are (in order):
*
* 'loading' Called when the remote document is being
* loaded with data by the browser.
* 'loaded' Called when the browser has finished loading
* the remote document.
* 'interactive' Called when the user can interact with the
* remote document, even though it has not
* finished loading.
* 'success' Called when the XMLHttpRequest is completed,
* and the HTTP status code is in the 2XX range.
* 'failure' Called when the XMLHttpRequest is completed,
* and the HTTP status code is not in the 2XX
* range.
* 'complete' Called when the XMLHttpRequest is complete
* (fires after success/failure if they are present).,
*
* You can further refine 'success' and 'failure' by adding additional
* callbacks for specific status codes:
*
* Example:
* <?php echo link_to_remote($word, array(
* 'url' => '@rule',
* '404' => "alert('Not found...? Wrong URL...?')",
* 'failure' => "alert('HTTP Error ' + request.status + '!')",
* )) ?>
*
* A status code callback overrides the success/failure handlers if present.
*
* If you for some reason or another need synchronous processing (that'll
* block the browser while the request is happening), you can specify
* 'type' => 'synchronous'.
*
* You can customize further browser side call logic by passing
* in JavaScript code snippets via some optional parameters. In
* their order of use these are:
*
* 'confirm' Adds confirmation dialog.
* 'condition' Perform remote request conditionally
* by this expression. Use this to
* describe browser-side conditions when
* request should not be initiated.
* 'before' Called before request is initiated.
* 'after' Called immediately after request was
* initiated and before 'loading'.
* 'submit' Specifies the DOM element ID that's used
* as the parent of the form elements. By
* default this is the current form, but
* it could just as well be the ID of a
* table row or any other DOM element.
*/
function link_to_remote($name, $options = array(), $html_options = array())
{
return link_to_function($name, remote_function($options), $html_options);
}
/**
* Periodically calls the specified url ('url') every 'frequency' seconds (default is 10).
* Usually used to update a specified div ('update') with the results of the remote call.
* The options for specifying the target with 'url' and defining callbacks is the same as 'link_to_remote()'.
*/
function periodically_call_remote($options = array())
{
$frequency = isset($options['frequency']) ? $options['frequency'] : 10; // every ten seconds by default
$code = 'new PeriodicalExecuter(function() {'.remote_function($options).'}, '.$frequency.')';
return javascript_tag($code);
}
/**
* Returns a form tag that will submit using XMLHttpRequest in the background instead of the regular
* reloading POST arrangement. Even though it's using JavaScript to serialize the form elements, the form submission
* will work just like a regular submission as viewed by the receiving side (all elements available in 'params').
* The options for specifying the target with 'url' and defining callbacks are the same as 'link_to_remote()'.
*
* A "fall-through" target for browsers that don't do JavaScript can be specified
* with the 'action'/'method' options on '$options_html'
*
* Example:
* <?php echo form_remote_tag(array(
* 'url' => '@tag_add',
* 'update' => 'question_tags',
* 'loading' => "Element.show('indicator'); \$('tag').value = ''",
* 'complete' => "Element.hide('indicator');".visual_effect('highlight', 'question_tags'),
* )) ?>
*
* The hash passed as a second argument is equivalent to the options (2nd) argument in the form_tag() helper.
*
* By default the fall-through action is the same as the one specified in the 'url'
* (and the default method is 'post').
*/
function form_remote_tag($options = array(), $options_html = array())
{
$options = _parse_attributes($options);
$options_html = _parse_attributes($options_html);
$options['form'] = true;
$options_html['onsubmit'] = remote_function($options).'; return false;';
$options_html['action'] = isset($options_html['action']) ? $options_html['action'] : url_for($options['url']);
$options_html['method'] = isset($options_html['method']) ? $options_html['method'] : 'post';
return tag('form', $options_html, true);
}
/**
* Returns a button input tag that will submit form using XMLHttpRequest in the background instead of regular
* reloading POST arrangement. The '$options' argument is the same as in 'form_remote_tag()'.
*/
function submit_to_remote($name, $value, $options = array(), $options_html = array())
{
$options = _parse_attributes($options);
$options_html = _parse_attributes($options_html);
if (!isset($options['with']))
{
$options['with'] = 'Form.serialize(this.form)';
}
$options_html['type'] = 'button';
$options_html['onclick'] = remote_function($options).'; return false;';
$options_html['name'] = $name;
$options_html['value'] = $value;
return tag('input', $options_html, false);
}
/**
* Returns a Javascript function (or expression) that will update a DOM element '$element_id'
* according to the '$options' passed.
*
* Possible '$options' are:
* 'content' The content to use for updating. Can be left out if using block, see example.
* 'action' Valid options are 'update' (assumed by default), 'empty', 'remove'
* 'position' If the 'action' is 'update', you can optionally specify one of the following positions:
* 'before', 'top', 'bottom', 'after'.
*
* Example:
* <?php echo javascript_tag(
* update_element_function('products', array(
* 'position' => 'bottom',
* 'content' => "<p>New product!</p>",
* ))
* ) ?>
*
*
* This method can also be used in combination with remote method call
* where the result is evaluated afterwards to cause multiple updates on a page.
*
* Example:
*
* # Calling view
* <?php echo form_remote_tag(array(
* 'url' => '@buy',
* 'complete' => evaluate_remote_response()
* )) ?>
* all the inputs here...
*
* # Target action
* public function executeBuy()
* {
* $this->product = ProductPeer::retrieveByPk(1);
* }
*
* # Returning view
* <php echo update_element_function('cart', array(
* 'action' => 'update',
* 'position' => 'bottom',
* 'content' => '<p>New Product: '.$product->getName().'</p>',
* )) ?>
*/
function update_element_function($element_id, $options = array())
{
sfContext::getInstance()->getResponse()->addJavascript(sfConfig::get('sf_prototype_web_dir').'/js/prototype');
$content = escape_javascript(isset($options['content']) ? $options['content'] : '');
$value = isset($options['action']) ? $options['action'] : 'update';
switch ($value)
{
case 'update':
if (isset($options['position']) && $options['position'])
{
$javascript_function = "new Insertion.".sfInflector::camelize($options['position'])."('$element_id','$content')";
}
else
{
$javascript_function = "\$('$element_id').innerHTML = '$content'";
}
break;
case 'empty':
$javascript_function = "\$('$element_id').innerHTML = ''";
break;
case 'remove':
$javascript_function = "Element.remove('$element_id')";
break;
default:
throw new sfException('Invalid action, choose one of update, remove, empty');
}
$javascript_function .= ";\n";
return (isset($options['binding']) ? $javascript_function.$options['binding'] : $javascript_function);
}
/**
* Returns 'eval(request.responseText)', which is the Javascript function that
* 'form_remote_tag()' can call in 'complete' to evaluate a multiple update return document
* using 'update_element_function()' calls.
*/
function evaluate_remote_response()
{
return 'eval(request.responseText)';
}
/**
* Returns the javascript needed for a remote function.
* Takes the same arguments as 'link_to_remote()'.
*
* Example:
* <select id="options" onchange="<?php echo remote_function(array('update' => 'options', 'url' => '@update_options')) ?>">
* <option value="0">Hello</option>
* <option value="1">World</option>
* </select>
*/
function remote_function($options)
{
sfContext::getInstance()->getResponse()->addJavascript(sfConfig::get('sf_prototype_web_dir').'/js/prototype');
$javascript_options = _options_for_ajax($options);
$update = '';
if (isset($options['update']) && is_array($options['update']))
{
$update = array();
if (isset($options['update']['success']))
{
$update[] = "success:'".$options['update']['success']."'";
}
if (isset($options['update']['failure']))
{
$update[] = "failure:'".$options['update']['failure']."'";
}
$update = '{'.join(',', $update).'}';
}
else if (isset($options['update']))
{
$update .= "'".$options['update']."'";
}
$function = !$update ? "new Ajax.Request(" : "new Ajax.Updater($update, ";
$function .= '\''.url_for($options['url']).'\'';
$function .= ', '.$javascript_options.')';
if (isset($options['before']))
{
$function = $options['before'].'; '.$function;
}
if (isset($options['after']))
{
$function = $function.'; '.$options['after'];
}
if (isset($options['condition']))
{
$function = 'if ('.$options['condition'].') { '.$function.'; }';
}
if (isset($options['confirm']))
{
$function = "if (confirm('".escape_javascript($options['confirm'])."')) { $function; }";
if (isset($options['cancel']))
{
$function = $function.' else { '.$options['cancel'].' }';
}
}
return $function;
}
/**
* Observes the field with the DOM ID specified by '$field_id' and makes
* an AJAX call when its contents have changed.
*
* Required '$options' are:
* 'url' 'url_for()'-style options for the action to call
* when the field has changed.
*
* Additional options are:
* 'frequency' The frequency (in seconds) at which changes to
* this field will be detected. Not setting this
* option at all or to a value equal to or less than
* zero will use event based observation instead of
* time based observation.
* 'update' Specifies the DOM ID of the element whose
* innerHTML should be updated with the
* XMLHttpRequest response text.
* 'with' A JavaScript expression specifying the
* parameters for the XMLHttpRequest. This defaults
* to 'value', which in the evaluated context
* refers to the new field value.
*
* Additionally, you may specify any of the options documented in
* link_to_remote().
*/
function observe_field($field_id, $options = array())
{
sfContext::getInstance()->getResponse()->addJavascript(sfConfig::get('sf_prototype_web_dir').'/js/prototype');
if (isset($options['frequency']) && $options['frequency'] > 0)
{
return _build_observer('Form.Element.Observer', $field_id, $options);
}
else
{
return _build_observer('Form.Element.EventObserver', $field_id, $options);
}
}
/**
* Like 'observe_field()', but operates on an entire form identified by the
* DOM ID '$form_id'. '$options' are the same as 'observe_field()', except
* the default value of the 'with' option evaluates to the
* serialized (request string) value of the form.
*/
function observe_form($form_id, $options = array())
{
sfContext::getInstance()->getResponse()->addJavascript(sfConfig::get('sf_prototype_web_dir').'/js/prototype');
if (isset($options['frequency']) && $options['frequency'] > 0)
{
return _build_observer('Form.Observer', $form_id, $options);
}
else
{
return _build_observer('Form.EventObserver', $form_id, $options);
}
}
/**
* Returns a JavaScript snippet to be used on the AJAX callbacks for starting
* visual effects.
*
* Example:
* <?php echo link_to_remote('Reload', array(
* 'update' => 'posts',
* 'url' => '@reload',
* 'complete => visual_effect('highlight', 'posts', array('duration' => 0.5 )),
* )) ?>
*
* If no '$element_id' is given, it assumes "element" which should be a local
* variable in the generated JavaScript execution context. This can be used
* for example with drop_receiving_element():
*
* <?php echo drop_receving_element( ..., array(
* ...
* 'loading' => visual_effect('fade'),
* )) ?>
*
* This would fade the element that was dropped on the drop receiving element.
*
* You can change the behaviour with various options, see
* http://script.aculo.us for more documentation.
*/
function visual_effect($name, $element_id = false, $js_options = array())
{
$response = sfContext::getInstance()->getResponse();
$response->addJavascript(sfConfig::get('sf_prototype_web_dir').'/js/prototype');
$response->addJavascript(sfConfig::get('sf_prototype_web_dir').'/js/builder');
$response->addJavascript(sfConfig::get('sf_prototype_web_dir').'/js/effects');
$element = $element_id ? "'$element_id'" : 'element';
if (in_array($name, array('toggle_appear', 'toggle_blind', 'toggle_slide')))
{
return "new Effect.toggle($element, '".substr($name, 7)."', "._options_for_javascript($js_options).");";
}
else
{
return "new Effect.".sfInflector::camelize($name)."($element, "._options_for_javascript($js_options).");";
}
}
/**
* Makes the elements with the DOM ID specified by '$element_id' sortable
* by drag-and-drop and make an AJAX call whenever the sort order has
* changed. By default, the action called gets the serialized sortable
* element as parameters.
*
* Example:
* <php echo sortable_element($my_list, array(
* 'url' => '@order',
* )) ?>
*
* In the example, the action gets a '$my_list' array parameter
* containing the values of the ids of elements the sortable consists
* of, in the current order.
*
* You can change the behaviour with various options, see
* http://script.aculo.us for more documentation.
*/
function sortable_element($element_id, $options = array())
{
$response = sfContext::getInstance()->getResponse();
$response->addJavascript(sfConfig::get('sf_prototype_web_dir').'/js/prototype');
$response->addJavascript(sfConfig::get('sf_prototype_web_dir').'/js/builder');
$response->addJavascript(sfConfig::get('sf_prototype_web_dir').'/js/effects');
$response->addJavascript(sfConfig::get('sf_prototype_web_dir').'/js/dragdrop');
if (!isset($options['with']))
{
$options['with'] = "Sortable.serialize('$element_id')";
}
if (!isset($options['onUpdate']))
{
$options['onUpdate'] = "function(){".remote_function($options)."}";
}
foreach (get_ajax_options() as $key)
{
unset($options[$key]);
}
foreach (array('tag', 'overlap', 'constraint', 'handle') as $option)
{
if (isset($options[$option]))
{
$options[$option] = "'{$options[$option]}'";
}
}
if (isset($options['containment']))
{
$options['containment'] = _array_or_string_for_javascript($options['containment']);
}
if (isset($options['hoverclass']))
{
$options['hoverclass'] = "'{$options['hoverclass']}'";
}
if (isset($options['only']))
{
$options['only'] = _array_or_string_for_javascript($options['only']);
}
return javascript_tag("Sortable.create('$element_id', "._options_for_javascript($options).")");
}
/**
* Makes the element with the DOM ID specified by '$element_id' draggable.
*
* Example:
* <?php echo draggable_element('my_image', array(
* 'revert' => true,
* )) ?>
*
* You can change the behaviour with various options, see
* http://script.aculo.us for more documentation.
*/
function draggable_element($element_id, $options = array())
{
$response = sfContext::getInstance()->getResponse();
$response->addJavascript(sfConfig::get('sf_prototype_web_dir').'/js/prototype');
$response->addJavascript(sfConfig::get('sf_prototype_web_dir').'/js/builder');
$response->addJavascript(sfConfig::get('sf_prototype_web_dir').'/js/effects');
$response->addJavascript(sfConfig::get('sf_prototype_web_dir').'/js/dragdrop');
return javascript_tag("new Draggable('$element_id', "._options_for_javascript($options).")");
}
/**
* Makes the element with the DOM ID specified by '$element_id' receive
* dropped draggable elements (created by 'draggable_element()') and make an AJAX call.
* By default, the action called gets the DOM ID of the element as parameter.
*
* Example:
* <?php drop_receiving_element('my_cart', array(
* 'url' => 'cart/add',
* )) ?>
*
* You can change the behaviour with various options, see
* http://script.aculo.us for more documentation.
*/
function drop_receiving_element($element_id, $options = array())
{
$response = sfContext::getInstance()->getResponse();
$response->addJavascript(sfConfig::get('sf_prototype_web_dir').'/js/prototype');
$response->addJavascript(sfConfig::get('sf_prototype_web_dir').'/js/builder');
$response->addJavascript(sfConfig::get('sf_prototype_web_dir').'/js/effects');
$response->addJavascript(sfConfig::get('sf_prototype_web_dir').'/js/dragdrop');
if (!isset($options['with']))
{
$options['with'] = "'id=' + encodeURIComponent(element.id)";
}
if (!isset($options['onDrop']))
{
$options['onDrop'] = "function(element){".remote_function($options)."}";
}
foreach (get_ajax_options() as $key)
{
unset($options[$key]);
}
if (isset($options['accept']))
{
$options['accept'] = _array_or_string_for_javascript($options['accept']);
}
if (isset($options['hoverclass']))
{
$options['hoverclass'] = "'{$options['hoverclass']}'";
}
return javascript_tag("Droppables.add('$element_id', "._options_for_javascript($options).")");
}
/**
* Returns a JavaScript tag with the '$content' inside.
* Example:
* <?php echo javascript_tag("alert('All is good')") ?>
* => <script type="text/javascript">alert('All is good')</script>
*/
function javascript_tag($content)
{
return content_tag('script', javascript_cdata_section($content), array('type' => 'text/javascript'));
}
function javascript_cdata_section($content)
{
return "\n//".cdata_section("\n$content\n//")."\n";
}
/**
* wrapper for script.aculo.us/prototype Ajax.Autocompleter.
* @param string name value of input field
* @param string default value for input field
* @param array input tag options. (size, autocomplete, etc...)
* @param array completion options. (use_style, etc...)
*
* @return string input field tag, div for completion results, and
* auto complete javascript tags
*/
function input_auto_complete_tag($name, $value, $url, $tag_options = array(), $completion_options = array())
{
$context = sfContext::getInstance();
$tag_options = _convert_options($tag_options);
$response = $context->getResponse();
$response->addJavascript(sfConfig::get('sf_prototype_web_dir').'/js/prototype');
$response->addJavascript(sfConfig::get('sf_prototype_web_dir').'/js/effects');
$response->addJavascript(sfConfig::get('sf_prototype_web_dir').'/js/controls');
$comp_options = _convert_options($completion_options);
if (isset($comp_options['use_style']) && $comp_options['use_style'] == true)
{
$response->addStylesheet(sfConfig::get('sf_prototype_web_dir').'/css/input_auto_complete_tag');
}
$tag_options['id'] = get_id_from_name(isset($tag_options['id']) ? $tag_options['id'] : $name);
$javascript = input_tag($name, $value, $tag_options);
$javascript .= content_tag('div', '' , array('id' => $tag_options['id'].'_auto_complete', 'class' => 'auto_complete'));
$javascript .= _auto_complete_field($tag_options['id'], $url, $comp_options);
return $javascript;
}
/**
* wrapper for script.aculo.us/prototype Ajax.InPlaceEditor.
* @param string name id of field that can be edited
* @param string url of module/action to be called when ok is clicked
* @param array editor tag options. (rows, cols, highlightcolor, highlightendcolor, etc...)
*
* @return string javascript to manipulate the id field to allow click and edit functionality
*/
function input_in_place_editor_tag($name, $url, $editor_options = array())
{
$response = sfContext::getInstance()->getResponse();
$response->addJavascript(sfConfig::get('sf_prototype_web_dir').'/js/prototype');
$response->addJavascript(sfConfig::get('sf_prototype_web_dir').'/js/effects');
$response->addJavascript(sfConfig::get('sf_prototype_web_dir').'/js/controls');
$editor_options = _convert_options($editor_options);
$default_options = array('tag' => 'span', 'id' => '\''.$name.'_in_place_editor', 'class' => 'in_place_editor_field');
return _in_place_editor($name, $url, array_merge($default_options, $editor_options));
}
/**
* Mark the start of a block that should only be shown in the browser if JavaScript
* is switched on.
*/
function if_javascript()
{
ob_start();
}
/**
* Mark the end of a block that should only be shown in the browser if JavaScript
* is switched on.
*/
function end_if_javascript()
{
$content = ob_get_clean();
echo javascript_tag("document.write('" . esc_js_no_entities($content) . "');");
}
/*
* Makes an HTML element specified by the DOM ID '$field_id' become an in-place
* editor of a property.
*
* A form is automatically created and displayed when the user clicks the element,
* something like this:
* <form id="myElement-in-place-edit-form" target="specified url">
* <input name="value" text="The content of myElement"/>
* <input type="submit" value="ok"/>
* <a onclick="javascript to cancel the editing">cancel</a>
* </form>
*
* The form is serialized and sent to the server using an AJAX call, the action on
* the server should process the value and return the updated value in the body of
* the reponse. The element will automatically be updated with the changed value
* (as returned from the server).
*
* Required '$options' are:
* 'url' Specifies the url where the updated value should
* be sent after the user presses "ok".
*
* Addtional '$options' are:
* 'rows' Number of rows (more than 1 will use a TEXTAREA)
* 'cancel_text' The text on the cancel link. (default: "cancel")
* 'save_text' The text on the save link. (default: "ok")
* 'external_control' The id of an external control used to enter edit mode.
* 'options' Pass through options to the AJAX call (see prototype's Ajax.Updater)
* 'with' JavaScript snippet that should return what is to be sent
* in the AJAX call, 'form' is an implicit parameter
*/
function _in_place_editor($field_id, $url, $options = array())
{
$javascript = "new Ajax.InPlaceEditor(";
$javascript .= "'$field_id', ";
$javascript .= "'" . url_for($url) . "'";
$js_options = array();
if (isset($options['tokens'])) $js_options['tokens'] = _array_or_string_for_javascript($options['tokens']);
if (isset($options['cancel_text']))
{
$js_options['cancelText'] = "'".$options['cancel_text']."'";
}
if (isset($options['save_text']))
{
$js_options['okText'] = "'".$options['save_text']."'";
}
if (isset($options['cols']))
{
$js_options['cols'] = $options['cols'];
}
if (isset($options['rows']))
{
$js_options['rows'] = $options['rows'];
}
if (isset($options['external_control']))
{
$js_options['externalControl'] = "'".$options['external_control']."'";
}
if (isset($options['options']))
{
$js_options['ajaxOptions'] = $options['options'];
}
if (isset($options['with']))
{
$js_options['callback'] = "function(form, value) { return ".$options['with']." }";
}
if (isset($options['highlightcolor']))
{
$js_options['highlightcolor'] = "'".$options['highlightcolor']."'";
}
if (isset($options['highlightendcolor']))
{
$js_options['highlightendcolor'] = "'".$options['highlightendcolor']."'";
}
if (isset($options['loadTextURL']))
{
$js_options['loadTextURL'] = "'".$options['loadTextURL']."'";
}
$javascript .= ', '._options_for_javascript($js_options);
$javascript .= ');';
return javascript_tag($javascript);
}
/**
* wrapper for script.aculo.us/prototype Ajax.Autocompleter.
* @param string id value of input field
* @param string url of module/action to execute for autocompletion
* @param array completion options
* @return string javascript tag for Ajax.Autocompleter
*/
function _auto_complete_field($field_id, $url, $options = array())
{
$javascript = "new Ajax.Autocompleter(";
$javascript .= "'".get_id_from_name($field_id)."', ";
if (isset($options['update']))
{
$javascript .= "'".$options['update']."', ";
}
else
{
$javascript .= "'".get_id_from_name($field_id)."_auto_complete', ";
}
$javascript .= "'".url_for($url)."'";
$js_options = array();
if (isset($options['tokens']))
{
$js_options['tokens'] = _array_or_string_for_javascript($options['tokens']);
}
if (isset ($options['with']))
{
$js_options['callback'] = "function(element, value) { return".$options['with']."}";
}
if (isset($options['indicator']))
{
$js_options['indicator'] = "'".$options['indicator']."'";
}
if (isset($options['on_show']))
{
$js_options['onShow'] = $options['on_show'];
}
if (isset($options['on_hide']))
{
$js_options['onHide'] = $options['on_hide'];
}
if (isset($options['min_chars']))
{
$js_options['minChars'] = $options['min_chars'];
}
if (isset($options['frequency']))
{
$js_options['frequency'] = $options['frequency'];
}
if (isset($options['update_element']))
{
$js_options['updateElement'] = $options['update_element'];
}
if (isset($options['after_update_element']))
{
$js_options['afterUpdateElement'] = $options['after_update_element'];
}
$javascript .= ', '._options_for_javascript($js_options).');';
return javascript_tag($javascript);
}
function _options_for_javascript($options)
{
$opts = array();
foreach ($options as $key => $value)
{
$opts[] = "$key:$value";
}
sort($opts);
return '{'.join(', ', $opts).'}';
}
function _array_or_string_for_javascript($option)
{
if (is_array($option))
{
return "['".join('\',\'', $option)."']";
}
else if ($option)
{
return "'$option'";
}
}
function _options_for_ajax($options)
{
$js_options = _build_callbacks($options);
$js_options['asynchronous'] = (isset($options['type']) && ($options['type'] == 'synchronous')) ? 'false' : 'true';
if (isset($options['method'])) $js_options['method'] = _method_option_to_s($options['method']);
if (isset($options['position'])) $js_options['insertion'] = "Insertion.".sfInflector::camelize($options['position']);
$js_options['evalScripts'] = (!isset($options['script']) || $options['script'] == '0' || $options['script'] == false) ? 'false' : 'true';
if (isset($options['form']))
{
$js_options['parameters'] = 'Form.serialize(this)';
}
else if (isset($options['submit']))
{
$js_options['parameters'] = "Form.serialize(document.getElementById('{$options['submit']}'))";
}
else if (isset($options['with']))
{
$js_options['parameters'] = $options['with'];
}
return _options_for_javascript($js_options);
}
function _method_option_to_s($method)
{
return (is_string($method) && $method[0] != "'") ? "'$method'" : $method;
}
function _build_observer($klass, $name, $options = array())
{
if (!isset($options['with']) && isset($options['update']))
{
$options['with'] = 'value';
}
$callback = remote_function($options);
$javascript = 'new '.$klass.'("'.$name.'", ';
if (isset($options['frequency']) && $options['frequency'] > 0)
{
$javascript .= $options['frequency'].", ";
}
$javascript .= "function(element, value) {";
$javascript .= $callback.'});';
return javascript_tag($javascript);
}
function _build_callbacks($options)
{
$callbacks = array();
foreach (get_callbacks() as $callback)
{
if (isset($options[$callback]))
{
$name = 'on'.ucfirst($callback);
$code = $options[$callback];
$callbacks[$name] = 'function(request, json){'.$code.'}';
}
}
return $callbacks;
}