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- // $Id: drupal.js,v 1.41.2.4 2009/07/21 08:59:10 goba Exp $
-
- var Drupal = Drupal || { 'settings': {}, 'behaviors': {}, 'themes': {}, 'locale': {} };
-
- /**
- * Set the variable that indicates if JavaScript behaviors should be applied
- */
- Drupal.jsEnabled = document.getElementsByTagName && document.createElement && document.createTextNode && document.documentElement && document.getElementById;
-
- /**
- * 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 as follows:
- * @code
- * Drupal.behaviors.behaviorName = function () {
- * ...
- * };
- * @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 a class in the form behaviorName-processed 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.
- */
- Drupal.attachBehaviors = function(context) {
- context = context || document;
- if (Drupal.jsEnabled) {
- // Execute all of them.
- jQuery.each(Drupal.behaviors, function() {
- this(context);
- });
- }
- };
-
- /**
- * Encode special characters in a plain-text string for display as HTML.
- */
- Drupal.checkPlain = function(str) {
- str = String(str);
- var replace = { '&': '&', '"': '"', '<': '<', '>': '>' };
- for (var character in replace) {
- var regex = new RegExp(character, 'g');
- str = str.replace(regex, replace[character]);
- }
- 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.
- * 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'))
- * @return
- * The translated string.
- */
- Drupal.t = function(str, args) {
- // Fetch the localized version of the string.
- if (Drupal.locale.strings && Drupal.locale.strings[str]) {
- str = Drupal.locale.strings[str];
- }
-
- if (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;
- };
-
- /**
- * 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.
- * 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'))
- * Note that you do not need to include @count in this array.
- * This replacement is done automatically for the plural case.
- * @return
- * A translated string.
- */
- Drupal.formatPlural = function(count, singular, plural, args) {
- 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);
- }
- else if (index == 1) {
- return Drupal.t(plural, args);
- }
- else {
- args['@count['+ index +']'] = args['@count'];
- delete args['@count'];
- return Drupal.t(plural.replace('@count', '@count['+ index +']'));
- }
- };
-
- /**
- * 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 that is output by theme_placeholder(text),
- * 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) {
- for (var i = 1, args = []; i < arguments.length; i++) {
- args.push(arguments[i]);
- }
-
- return (Drupal.theme[func] || Drupal.theme.prototype[func]).apply(this, args);
- };
-
- /**
- * Parse a JSON response.
- *
- * The result is either the JSON object, or an object with 'status' 0 and 'data' an error message.
- */
- Drupal.parseJson = function (data) {
- if ((data.substring(0, 1) != '{') && (data.substring(0, 1) != '[')) {
- return { status: 0, data: data.length ? data : Drupal.t('Unspecified error') };
- }
- return eval('(' + data + ');');
- };
-
- /**
- * Freeze the current body height (as minimum height). Used to prevent
- * unnecessary upwards scrolling when doing DOM manipulations.
- */
- Drupal.freezeHeight = function () {
- Drupal.unfreezeHeight();
- var div = document.createElement('div');
- $(div).css({
- position: 'absolute',
- top: '0px',
- left: '0px',
- width: '1px',
- height: $('body').css('height')
- }).attr('id', 'freeze-height');
- $('body').append(div);
- };
-
- /**
- * Unfreeze the body height
- */
- Drupal.unfreezeHeight = function () {
- $('#freeze-height').remove();
- };
-
- /**
- * Wrapper around encodeURIComponent() which avoids Apache quirks (equivalent of
- * drupal_urlencode() in PHP). This function should only be used on paths, not
- * on query string arguments.
- */
- Drupal.encodeURIComponent = function (item, uri) {
- uri = uri || location.href;
- item = encodeURIComponent(item).replace(/%2F/g, '/');
- return (uri.indexOf('?q=') != -1) ? item : item.replace(/%26/g, '%2526').replace(/%23/g, '%2523').replace(/\/\//g, '/%252F');
- };
-
- /**
- * Get the text selection in a textarea.
- */
- Drupal.getSelection = function (element) {
- if (typeof(element.selectionStart) != 'number' && document.selection) {
- // The current selection
- var range1 = document.selection.createRange();
- var range2 = range1.duplicate();
- // Select all text.
- range2.moveToElementText(element);
- // Now move 'dummy' end point to end point of original range.
- range2.setEndPoint('EndToEnd', range1);
- // Now we can calculate start and end points.
- var start = range2.text.length - range1.text.length;
- var end = start + range1.text.length;
- return { 'start': start, 'end': end };
- }
- return { 'start': element.selectionStart, 'end': element.selectionEnd };
- };
-
- /**
- * Build an error message from ahah response.
- */
- Drupal.ahahError = function(xmlhttp, uri) {
- if (xmlhttp.status == 200) {
- if (jQuery.trim($(xmlhttp.responseText).text())) {
- var message = Drupal.t("An error occurred. \n@uri\n@text", {'@uri': uri, '@text': xmlhttp.responseText });
- }
- else {
- var message = Drupal.t("An error occurred. \n@uri\n(no information available).", {'@uri': uri, '@text': xmlhttp.responseText });
- }
- }
- else {
- var message = Drupal.t("An HTTP error @status occurred. \n@uri", {'@uri': uri, '@status': xmlhttp.status });
- }
- return message;
- }
-
- // Global Killswitch on the <html> element
- if (Drupal.jsEnabled) {
- // Global Killswitch on the <html> element
- $(document.documentElement).addClass('js');
- // 'js enabled' cookie
- document.cookie = 'has_js=1; path=/';
- // Attach all behaviors.
- $(document).ready(function() {
- Drupal.attachBehaviors(this);
- });
- }
-
- /**
- * 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>' + Drupal.checkPlain(str) + '</em>';
- }
- };
-