From bbc7aa8b51e4890f66c8298d6dc7d6368ebade38 Mon Sep 17 00:00:00 2001
From: Paul Duncan <pabs@pablotron.org>
Date: Fri, 10 Nov 2017 19:05:58 -0500
Subject: add permalinks, move about links to data.js

---
 htdocs/js/data.js  | 17 +++++++++++++++++
 htdocs/js/mathy.js | 44 ++++++++++++++++++++++++++++++++++++++++----
 2 files changed, 57 insertions(+), 4 deletions(-)

(limited to 'htdocs/js')

diff --git a/htdocs/js/data.js b/htdocs/js/data.js
index f17f364..5a12764 100644
--- a/htdocs/js/data.js
+++ b/htdocs/js/data.js
@@ -1,4 +1,21 @@
 var DATA = {
+  links: [{
+    name: 'Ace Editor',
+    link: 'https://ace.c9.io/',
+  }, {
+    name: 'Bootstrap',
+    link: 'https://getbootstrap.com/',
+  }, {
+    name: 'Font Awesome',
+    link: 'http://fontawesome.io/',
+  }, {
+    name: 'jQuery',
+    link: 'https://jquery.com',
+  }, {
+    name: 'MathJax',
+    link: 'https://www.mathjax.org/',
+  }],
+
   examples: [{
     name: "Some Limit",
     text: [
diff --git a/htdocs/js/mathy.js b/htdocs/js/mathy.js
index 2100b26..9e9c71d 100644
--- a/htdocs/js/mathy.js
+++ b/htdocs/js/mathy.js
@@ -2,6 +2,18 @@ jQuery(function($) {
   "use strict";
 
   var TEMPLATES = new LuigiTemplate.Cache({
+    link: [
+      "<li>",
+        "<a ",
+          "href='%{link|h}' ",
+          "title='%{name|h}' ",
+          "target='_blank' ",
+        ">",
+          "%{name|h}",
+        "</a>",
+      "</li>",
+    ],
+
     save: [
       "<li>",
         "<a ",
@@ -162,13 +174,24 @@ jQuery(function($) {
   });
 
   (function() {
-    // load autosaved text
-    var last = localStorage.getItem('mathy_last');
-    if (!last)
+    var text = null;
+
+    // guard against old IE
+    if (window.URL) {
+      // load from query parameter
+      text = (new URL(document.location)).searchParams.get('t');
+    }
+
+    if (!text) {
+      // load autosaved text
+      text = localStorage.getItem('mathy_last');
+    }
+
+    if (!text)
       return;
 
     // set text
-    editor.setValue(last);
+    editor.setValue(text);
   })();
 
   $('#saves').on('click', 'a', function() {
@@ -269,4 +292,17 @@ jQuery(function($) {
     // stop event
     return false;
   });
+
+  // populate links
+  $('#about-dialog .modal-body ul').html($.map(DATA.links, function(row) {
+    return TEMPLATES.run('link', row);
+  }).join(''));
+
+  $('#link-dialog').on('show.bs.modal', function() {
+    $(this).find('input').val(document.location + '?' + $.param({
+      t: editor.getValue(),
+    }));
+  }).on('shown.bs.modal', function() {
+    $(this).find('input').focus().select();
+  });
 });
-- 
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