From efb2e7adaf2d74aeb9433fedda5b03eaa3fde747 Mon Sep 17 00:00:00 2001
From: Mike Taylor <mike@indexdata.com>
Date: Tue, 29 Apr 2014 13:39:14 +0100
Subject: [PATCH] Lang widget now generates its own HTML

---
 src/mkws-widgets.js |   63 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 63 insertions(+)

diff --git a/src/mkws-widgets.js b/src/mkws-widgets.js
index 80fe222..e17e7e0 100644
--- a/src/mkws-widgets.js
+++ b/src/mkws-widgets.js
@@ -457,3 +457,66 @@ mkws.registerWidgetType('Ranking', function() {
 });
 
 
+mkws.registerWidgetType('Lang', function() {
+    // dynamic URL or static page? /path/foo?query=test
+    /* create locale language menu */
+    if (!this.config.show_lang) return;
+
+    var lang_default = "en";
+    var lang = this.config.lang || lang_default;
+    var list = [];
+
+    /* display a list of configured languages, or all */
+    var lang_options = this.config.lang_options || [];
+    var toBeIncluded = {};
+    for (var i = 0; i < lang_options.length; i++) {
+	toBeIncluded[lang_options[i]] = true;
+    }
+
+    for (var k in mkws.locale_lang) {
+	if (toBeIncluded[k] || lang_options.length == 0)
+	    list.push(k);
+    }
+
+    // add english link
+    if (lang_options.length == 0 || toBeIncluded[lang_default])
+        list.push(lang_default);
+
+    this.log("Language menu for: " + list.join(", "));
+
+    /* the HTML part */
+    var data = "";
+    for (var i = 0; i < list.length; i++) {
+	var l = list[i];
+	if (data)
+	    data += ' | ';
+
+	if (lang == l) {
+	    data += ' <span>' + l + '</span> ';
+	} else {
+	    data += ' <a href="' + lang_url(l) + '">' + l + '</a> '
+	}
+    }
+
+    $(this.node).html(data);
+
+
+    // set or re-set "lang" URL parameter
+    function lang_url(lang) {
+	var query = location.search;
+	// no query parameters? done
+	if (!query) {
+	    return "?lang=" + lang;
+	}
+
+	// parameter does not exist
+	if (!query.match(/[\?&]lang=/)) {
+            return query + "&lang=" + lang;
+        }
+
+	// replace existing parameter
+	query = query.replace(/\?lang=([^&#;]*)/, "?lang=" + lang);
+	query = query.replace(/\&lang=([^&#;]*)/, "&lang=" + lang);
+	return query;
+    }
+});
-- 
1.7.10.4