preview with keybindings and fix scrolling issue

jakobkogler · jakobkogler · commit 9aec25e8d9b5 · 2022-01-14T20:20:31.000+01:00
diff --git a/src/preview.md b/src/preview.md
@@ -1,5 +1,5 @@
 ---
-title: Preview
+title: Article Preview
 hide:
   - navigation
 ---
@@ -11,25 +11,53 @@ hide:
       var URL = "https://us-central1-cp-algorithms.cloudfunctions.net/convert-markdown-mkdocs";
       var data = {"markdown": markdown};
       var refresh_script = `<scr` + `ipt>MathJax.typeset();</scr` + `ipt>`;
-      $("#previewArea").html("Loading...");
+      $("#previewBtn").html("Loading...");
       $.ajax({
         url: URL,
         contentType: "application/json",
         method: 'POST',
         data: JSON.stringify(data),
-        success: function(data) { $("#previewArea").html(data + "\n" + refresh_script); },
+        success: function(data) {
+          $("#previewArea").html(data + "\n" + refresh_script);
+          $("#previewBtn").html("Preview (Ctrl + Enter)");
+        },
         error: function() {$("#previewArea").html("Internal error!")}
       });
     });
+
+    $('form').keydown(function(event) {
+      if (event.ctrlKey && event.keyCode === 13) {
+        $("#previewBtn").click();
+      }
+    })
   });
 </script>
-# Preview the rendering of your article
+# Article Preview
 
+<a href="contrib.md">Information for contributors</a>
+<center>
 <form>
-  <textarea style="width:90%;height:400px;" id="markdownInput" placeholder="paste your text here..."></textarea>
+  <textarea style="width:100%;height:300px;" id="markdownInput">
+---
+title: Example article
+hide:
+  - navigation
+---
+# Example article
+
+$$a^2 + b^2 = c^2$$
+
+```cpp
+int gcd (int a, int b) {
+    if (b == 0)
+        return a;
+    else
+        return gcd (b, a % b);
+}
+```</textarea>
   <br/>
   <br/>
-  <button type='button' class="md-button md-button--primary" id="previewBtn">Preview</button>
+  <button type='button' class="md-button md-button--primary" id="previewBtn">Preview (Ctrl + Enter)</button>
 </form>
 </center>
 <hr/>
