Expand compose box to fit previewed text

1 files changed, 5 insertions, 1 deletions

diff --git a/lib/serve.js b/lib/serve.js
index 51a7a5d..e4d5911 100644
--- a/lib/serve.js
+++ b/lib/serve.js
@@ -685,6 +685,10 @@ Serve.prototype.wrapChannel = function (channel) {
   })
 }
 
+function rows(str) {
+  return String(str).split(/[^\n]{70}|\n/).length
+}
+
 Serve.prototype.composer = function (opts, cb) {
   var self = this
   opts = opts || {}
@@ -697,7 +701,7 @@ Serve.prototype.composer = function (opts, cb) {
       h('textarea', {
         id: opts.id,
         name: 'text',
-        rows: 4,
+        rows: Math.max(4, rows(data.text)),
         cols: 70,
         placeholder: opts.placeholder || 'public message',
       }, data.text || ''),