127 lines
5.2 KiB
JavaScript
127 lines
5.2 KiB
JavaScript
(function ($) {
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function extlinkAttach(context) {
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// Strip the host name down, removing ports, subdomains, or www.
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var pattern = /^(([^\/:]+?\.)*)([^\.:]{4,})((\.[a-z]{1,4})*)(:[0-9]{1,5})?$/;
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var host = window.location.host.replace(pattern, '$3$4');
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var subdomain = window.location.host.replace(pattern, '$1');
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// Determine what subdomains are considered internal.
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if (Drupal.settings.extlink.extSubdomains) {
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var subdomains = "([^/]*\\.)?";
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}
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else if (subdomain == 'www.' || subdomain == '') {
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var subdomains = "(www\\.)?";
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}
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else {
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var subdomains = subdomain.replace(".", "\\.");
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}
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// Build regular expressions that define an internal link.
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var internal_link = new RegExp("^https?://" + subdomains + host, "i");
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// Extra internal link matching.
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var extInclude = false;
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if (Drupal.settings.extlink.extInclude) {
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extInclude = new RegExp(Drupal.settings.extlink.extInclude.replace(/\\/, '\\'));
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}
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// Extra external link matching.
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var extExclude = false;
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if (Drupal.settings.extlink.extExclude) {
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extExclude = new RegExp(Drupal.settings.extlink.extExclude.replace(/\\/, '\\'));
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}
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// Extra external link CSS selector exclusion.
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var extCssExclude = false;
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if (Drupal.settings.extlink.extCssExclude) {
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extCssExclude = Drupal.settings.extlink.extCssExclude;
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}
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// Extra external link CSS selector explicit.
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var extCssExplicit = false;
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if (Drupal.settings.extlink.extCssExplicit) {
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extCssExplicit = Drupal.settings.extlink.extCssExplicit;
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}
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// Find all links which are NOT internal and begin with http (as opposed
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// to ftp://, javascript:, etc. other kinds of links.
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// When operating on the 'this' variable, the host has been appended to
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// all links by the browser, even local ones.
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// In jQuery 1.1 and higher, we'd use a filter method here, but it is not
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// available in jQuery 1.0 (Drupal 5 default).
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var external_links = new Array();
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var mailto_links = new Array();
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$("a:not(." + Drupal.settings.extlink.extClass + ", ." + Drupal.settings.extlink.mailtoClass + "), area:not(." + Drupal.settings.extlink.extClass + ", ." + Drupal.settings.extlink.mailtoClass + ")", context).each(function(el) {
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try {
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var url = this.href.toLowerCase();
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if (url.indexOf('http') == 0
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&& (!url.match(internal_link) || (extInclude && url.match(extInclude)))
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&& !(extExclude && url.match(extExclude))
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&& !(extCssExclude && $(this).parents(extCssExclude).length > 0)
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&& !(extCssExplicit && $(this).parents(extCssExplicit).length < 1)) {
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external_links.push(this);
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}
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// Do not include area tags with begin with mailto: (this prohibits
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// icons from being added to image-maps).
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else if (this.tagName != 'AREA'
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&& url.indexOf('mailto:') == 0
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&& !(extCssExclude && $(this).parents(extCssExclude).length > 0)
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&& !(extCssExplicit && $(this).parents(extCssExplicit).length < 1)) {
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mailto_links.push(this);
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}
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}
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// IE7 throws errors often when dealing with irregular links, such as:
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// <a href="node/10"></a> Empty tags.
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// <a href="http://user:pass@example.com">example</a> User:pass syntax.
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catch(error) {
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return false;
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}
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});
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if (Drupal.settings.extlink.extClass) {
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// Apply the "ext" class to all links not containing images.
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if (parseFloat($().jquery) < 1.2) {
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$(external_links).not('[img]').addClass(Drupal.settings.extlink.extClass).each(function() { if ($(this).css('display') == 'inline') $(this).after('<span class=' + Drupal.settings.extlink.extClass + '></span>'); });
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}
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else {
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$(external_links).not($(external_links).find('img').parents('a')).addClass(Drupal.settings.extlink.extClass).each(function() { if ($(this).css('display') == 'inline') $(this).after('<span class=' + Drupal.settings.extlink.extClass + '></span>'); });
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}
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}
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if (Drupal.settings.extlink.mailtoClass) {
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// Apply the "mailto" class to all mailto links not containing images.
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if (parseFloat($().jquery) < 1.2) {
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$(mailto_links).not('[img]').addClass(Drupal.settings.extlink.mailtoClass).each(function() { if ($(this).css('display') == 'inline') $(this).after('<span class=' + Drupal.settings.extlink.mailtoClass + '></span>'); });
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}
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else {
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$(mailto_links).not($(mailto_links).find('img').parents('a')).addClass(Drupal.settings.extlink.mailtoClass).each(function() { if ($(this).css('display') == 'inline') $(this).after('<span class=' + Drupal.settings.extlink.mailtoClass + '></span>'); });
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}
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}
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if (Drupal.settings.extlink.extTarget) {
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// Apply the target attribute to all links.
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$(external_links).attr('target', Drupal.settings.extlink.extTarget);
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}
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if (Drupal.settings.extlink.extAlert) {
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// Add pop-up click-through dialog.
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$(external_links).click(function(e) {
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return confirm(Drupal.settings.extlink.extAlertText);
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});
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}
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// Work around for Internet Explorer box model problems.
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if (($.support && !($.support.boxModel === undefined) && !$.support.boxModel) || ($.browser.msie && parseInt($.browser.version) <= 7)) {
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$('span.ext, span.mailto').css('display', 'inline-block');
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}
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}
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Drupal.behaviors.extlink = {
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attach: function(context){
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extlinkAttach(context);
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}
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}
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})(jQuery);
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