var Drupal = Drupal || { 'settings': {}, 'behaviors': {}, 'locale': {} };
// Allow other JavaScript libraries to use $.
jQuery.noConflict();
(function ($) {
/**
* Override jQuery.fn.init to guard against XSS attacks.
*
* See http://bugs.jquery.com/ticket/9521
*/
var jquery_init = $.fn.init;
$.fn.init = function (selector, context, rootjQuery) {
// If the string contains a "#" before a "<", treat it as invalid HTML.
if (selector && typeof selector === 'string') {
var hash_position = selector.indexOf('#');
if (hash_position >= 0) {
var bracket_position = selector.indexOf('<');
if (bracket_position > hash_position) {
throw 'Syntax error, unrecognized expression: ' + selector;
}
}
}
return jquery_init.call(this, selector, context, rootjQuery);
};
$.fn.init.prototype = jquery_init.prototype;
/**
* Attach all registered behaviors to a page element.
*
* Behaviors are event-triggered actions that attach to page elements, enhancing
* default non-JavaScript UIs. Behaviors are registered in the Drupal.behaviors
* object using the method 'attach' and optionally also 'detach' as follows:
* @code
* Drupal.behaviors.behaviorName = {
* attach: function (context, settings) {
* ...
* },
* detach: function (context, settings, trigger) {
* ...
* }
* };
* @endcode
*
* Drupal.attachBehaviors is added below to the jQuery ready event and so
* runs on initial page load. Developers implementing AHAH/Ajax in their
* solutions should also call this function after new page content has been
* loaded, feeding in an element to be processed, in order to attach all
* behaviors to the new content.
*
* Behaviors should use
* @code
* $(selector).once('behavior-name', function () {
* ...
* });
* @endcode
* to ensure the behavior is attached only once to a given element. (Doing so
* enables the reprocessing of given elements, which may be needed on occasion
* despite the ability to limit behavior attachment to a particular element.)
*
* @param context
* An element to attach behaviors to. If none is given, the document element
* is used.
* @param settings
* An object containing settings for the current context. If none given, the
* global Drupal.settings object is used.
*/
Drupal.attachBehaviors = function (context, settings) {
context = context || document;
settings = settings || Drupal.settings;
// Execute all of them.
$.each(Drupal.behaviors, function () {
if ($.isFunction(this.attach)) {
this.attach(context, settings);
}
});
};
/**
* Detach registered behaviors from a page element.
*
* Developers implementing AHAH/Ajax in their solutions should call this
* function before page content is about to be removed, feeding in an element
* to be processed, in order to allow special behaviors to detach from the
* content.
*
* Such implementations should look for the class name that was added in their
* corresponding Drupal.behaviors.behaviorName.attach implementation, i.e.
* behaviorName-processed, to ensure the behavior is detached only from
* previously processed elements.
*
* @param context
* An element to detach behaviors from. If none is given, the document element
* is used.
* @param settings
* An object containing settings for the current context. If none given, the
* global Drupal.settings object is used.
* @param trigger
* A string containing what's causing the behaviors to be detached. The
* possible triggers are:
* - unload: (default) The context element is being removed from the DOM.
* - move: The element is about to be moved within the DOM (for example,
* during a tabledrag row swap). After the move is completed,
* Drupal.attachBehaviors() is called, so that the behavior can undo
* whatever it did in response to the move. Many behaviors won't need to
* do anything simply in response to the element being moved, but because
* IFRAME elements reload their "src" when being moved within the DOM,
* behaviors bound to IFRAME elements (like WYSIWYG editors) may need to
* take some action.
* - serialize: When an Ajax form is submitted, this is called with the
* form as the context. This provides every behavior within the form an
* opportunity to ensure that the field elements have correct content
* in them before the form is serialized. The canonical use-case is so
* that WYSIWYG editors can update the hidden textarea to which they are
* bound.
*
* @see Drupal.attachBehaviors
*/
Drupal.detachBehaviors = function (context, settings, trigger) {
context = context || document;
settings = settings || Drupal.settings;
trigger = trigger || 'unload';
// Execute all of them.
$.each(Drupal.behaviors, function () {
if ($.isFunction(this.detach)) {
this.detach(context, settings, trigger);
}
});
};
/**
* Encode special characters in a plain-text string for display as HTML.
*
* @ingroup sanitization
*/
Drupal.checkPlain = function (str) {
var character, regex,
replace = { '&': '&', '"': '"', '<': '<', '>': '>' };
str = String(str);
for (character in replace) {
if (replace.hasOwnProperty(character)) {
regex = new RegExp(character, 'g');
str = str.replace(regex, replace[character]);
}
}
return str;
};
/**
* Replace placeholders with sanitized values in a string.
*
* @param str
* A string with placeholders.
* @param args
* An object of replacements pairs to make. Incidences of any key in this
* array are replaced with the corresponding value. Based on the first
* character of the key, the value is escaped and/or themed:
* - !variable: inserted as is
* - @variable: escape plain text to HTML (Drupal.checkPlain)
* - %variable: escape text and theme as a placeholder for user-submitted
* content (checkPlain + Drupal.theme('placeholder'))
*
* @see Drupal.t()
* @ingroup sanitization
*/
Drupal.formatString = function(str, args) {
// Transform arguments before inserting them.
for (var key in args) {
switch (key.charAt(0)) {
// Escaped only.
case '@':
args[key] = Drupal.checkPlain(args[key]);
break;
// Pass-through.
case '!':
break;
// Escaped and placeholder.
case '%':
default:
args[key] = Drupal.theme('placeholder', args[key]);
break;
}
str = str.replace(key, args[key]);
}
return str;
};
/**
* Translate strings to the page language or a given language.
*
* See the documentation of the server-side t() function for further details.
*
* @param str
* A string containing the English string to translate.
* @param args
* An object of replacements pairs to make after translation. Incidences
* of any key in this array are replaced with the corresponding value.
* See Drupal.formatString().
*
* @param options
* - 'context' (defaults to the empty context): The context the source string
* belongs to.
*
* @return
* The translated string.
*/
Drupal.t = function (str, args, options) {
options = options || {};
options.context = options.context || '';
// Fetch the localized version of the string.
if (Drupal.locale.strings && Drupal.locale.strings[options.context] && Drupal.locale.strings[options.context][str]) {
str = Drupal.locale.strings[options.context][str];
}
if (args) {
str = Drupal.formatString(str, args);
}
return str;
};
/**
* Format a string containing a count of items.
*
* This function ensures that the string is pluralized correctly. Since Drupal.t() is
* called by this function, make sure not to pass already-localized strings to it.
*
* See the documentation of the server-side format_plural() function for further details.
*
* @param count
* The item count to display.
* @param singular
* The string for the singular case. Please make sure it is clear this is
* singular, to ease translation (e.g. use "1 new comment" instead of "1 new").
* Do not use @count in the singular string.
* @param plural
* The string for the plural case. Please make sure it is clear this is plural,
* to ease translation. Use @count in place of the item count, as in "@count
* new comments".
* @param args
* An object of replacements pairs to make after translation. Incidences
* of any key in this array are replaced with the corresponding value.
* See Drupal.formatString().
* Note that you do not need to include @count in this array.
* This replacement is done automatically for the plural case.
* @param options
* The options to pass to the Drupal.t() function.
* @return
* A translated string.
*/
Drupal.formatPlural = function (count, singular, plural, args, options) {
var args = args || {};
args['@count'] = count;
// Determine the index of the plural form.
var index = Drupal.locale.pluralFormula ? Drupal.locale.pluralFormula(args['@count']) : ((args['@count'] == 1) ? 0 : 1);
if (index == 0) {
return Drupal.t(singular, args, options);
}
else if (index == 1) {
return Drupal.t(plural, args, options);
}
else {
args['@count[' + index + ']'] = args['@count'];
delete args['@count'];
return Drupal.t(plural.replace('@count', '@count[' + index + ']'), args, options);
}
};
/**
* Generate the themed representation of a Drupal object.
*
* All requests for themed output must go through this function. It examines
* the request and routes it to the appropriate theme function. If the current
* theme does not provide an override function, the generic theme function is
* called.
*
* For example, to retrieve the HTML for text that should be emphasized and
* displayed as a placeholder inside a sentence, call
* Drupal.theme('placeholder', text).
*
* @param func
* The name of the theme function to call.
* @param ...
* Additional arguments to pass along to the theme function.
* @return
* Any data the theme function returns. This could be a plain HTML string,
* but also a complex object.
*/
Drupal.theme = function (func) {
var args = Array.prototype.slice.apply(arguments, [1]);
return (Drupal.theme[func] || Drupal.theme.prototype[func]).apply(this, args);
};
/**
* Freeze the current body height (as minimum height). Used to prevent
* unnecessary upwards scrolling when doing DOM manipulations.
*/
Drupal.freezeHeight = function () {
Drupal.unfreezeHeight();
$('<div id="freeze-height"></div>').css({
position: 'absolute',
top: '0px',
left: '0px',
width: '1px',
height: $('body').css('height')
}).appendTo('body');
};
/**
* Unfreeze the body height.
*/
Drupal.unfreezeHeight = function () {
$('#freeze-height').remove();
};
/**
* Encodes a Drupal path for use in a URL.
*
* For aesthetic reasons slashes are not escaped.
*/
Drupal.encodePath = function (item, uri) {
uri = uri || location.href;
return encodeURIComponent(item).replace(/%2F/g, '/');
};
/**
* Get the text selection in a textarea.
*/
Drupal.getSelection = function (element) {
if (typeof element.selectionStart != 'number' && document.selection) {
// The current selection.
var range1 = document.selection.createRange();
var range2 = range1.duplicate();
// Select all text.
range2.moveToElementText(element);
// Now move 'dummy' end point to end point of original range.
range2.setEndPoint('EndToEnd', range1);
// Now we can calculate start and end points.
var start = range2.text.length - range1.text.length;
var end = start + range1.text.length;
return { 'start': start, 'end': end };
}
return { 'start': element.selectionStart, 'end': element.selectionEnd };
};
/**
* Build an error message from an Ajax response.
*/
Drupal.ajaxError = function (xmlhttp, uri) {
var statusCode, statusText, pathText, responseText, readyStateText, message;
if (xmlhttp.status) {
statusCode = "\n" + Drupal.t("An AJAX HTTP error occurred.") + "\n" + Drupal.t("HTTP Result Code: !status", {'!status': xmlhttp.status});
}
else {
statusCode = "\n" + Drupal.t("An AJAX HTTP request terminated abnormally.");
}
statusCode += "\n" + Drupal.t("Debugging information follows.");
pathText = "\n" + Drupal.t("Path: !uri", {'!uri': uri} );
statusText = '';
// In some cases, when statusCode == 0, xmlhttp.statusText may not be defined.
// Unfortunately, testing for it with typeof, etc, doesn't seem to catch that
// and the test causes an exception. So we need to catch the exception here.
try {
statusText = "\n" + Drupal.t("StatusText: !statusText", {'!statusText': $.trim(xmlhttp.statusText)});
}
catch (e) {}
responseText = '';
// Again, we don't have a way to know for sure whether accessing
// xmlhttp.responseText is going to throw an exception. So we'll catch it.
try {
responseText = "\n" + Drupal.t("ResponseText: !responseText", {'!responseText': $.trim(xmlhttp.responseText) } );
} catch (e) {}
// Make the responseText more readable by stripping HTML tags and newlines.
responseText = responseText.replace(/<("[^"]*"|'[^']*'|[^'">])*>/gi,"");
responseText = responseText.replace(/[\n]+\s+/g,"\n");
// We don't need readyState except for status == 0.
readyStateText = xmlhttp.status == 0 ? ("\n" + Drupal.t("ReadyState: !readyState", {'!readyState': xmlhttp.readyState})) : "";
message = statusCode + pathText + statusText + responseText + readyStateText;
return message;
};
// Class indicating that JS is enabled; used for styling purpose.
$('html').addClass('js');
// 'js enabled' cookie.
document.cookie = 'has_js=1; path=/';
/**
* Additions to jQuery.support.
*/
$(function () {
/**
* Boolean indicating whether or not position:fixed is supported.
*/
if (jQuery.support.positionFixed === undefined) {
var el = $('<div style="position:fixed; top:10px" />').appendTo(document.body);
jQuery.support.positionFixed = el[0].offsetTop === 10;
el.remove();
}
});
//Attach all behaviors.
$(function () {
Drupal.attachBehaviors(document, Drupal.settings);
});
/**
* The default themes.
*/
Drupal.theme.prototype = {
/**
* Formats text for emphasized display in a placeholder inside a sentence.
*
* @param str
* The text to format (plain-text).
* @return
* The formatted text (html).
*/
placeholder: function (str) {
return '<em class="placeholder">' + Drupal.checkPlain(str) + '</em>';
}
};
})(jQuery);