From 8a6096a3de66f0d6bd0b7133b5873d35ae10edea Mon Sep 17 00:00:00 2001
From: Jessica Stokes <hello@jessicastokes.net>
Date: Tue, 11 Apr 2017 05:30:58 +1000
Subject: [PATCH] Allow typing a toot while an image uploads (#1429)
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

This patch stops disabling the toot text field when an image is uploading. Instead, you can type to your heart's content and when the image uploads it'll append the image URL, and restore the position of your cursor to wherever it was in the toot text just prior. Effectively, the image URL is appended to the toot, and typing is not interrupted at all! ✨
---
 .../compose/components/compose_form.jsx       | 22 ++++++++++++++-----
 1 file changed, 17 insertions(+), 5 deletions(-)

diff --git a/app/assets/javascripts/components/features/compose/components/compose_form.jsx b/app/assets/javascripts/components/features/compose/components/compose_form.jsx
index b016d3f28e..cb4b62f6cf 100644
--- a/app/assets/javascripts/components/features/compose/components/compose_form.jsx
+++ b/app/assets/javascripts/components/features/compose/components/compose_form.jsx
@@ -83,11 +83,23 @@ const ComposeForm = React.createClass({
     this.props.onChangeSpoilerText(e.target.value);
   },
 
+  componentWillReceiveProps (nextProps) {
+    // If this is the update where we've finished uploading,
+    // save the last caret position so we can restore it below!
+    if (!nextProps.is_uploading && this.props.is_uploading) {
+      this._restoreCaret = this.autosuggestTextarea.textarea.selectionStart;
+    }
+  },
+
   componentDidUpdate (prevProps) {
-    if (this.props.focusDate !== prevProps.focusDate) {
-      // If replying to zero or one users, places the cursor at the end of the textbox.
-      // If replying to more than one user, selects any usernames past the first;
-      // this provides a convenient shortcut to drop everyone else from the conversation.
+    // This statement does several things: 
+    // - If we're beginning a reply, and,
+    //     - Replying to zero or one users, places the cursor at the end of the textbox.
+    //     - Replying to more than one user, selects any usernames past the first;
+    //       this provides a convenient shortcut to drop everyone else from the conversation.
+    // - If we've just finished uploading an image, and have a saved caret position,
+    //   restores the cursor to that position after the text changes!
+    if (this.props.focusDate !== prevProps.focusDate || (prevProps.is_uploading && !this.props.is_uploading && typeof this._restoreCaret === 'number')) {
       let selectionEnd, selectionStart;
 
       if (this.props.preselectDate !== prevProps.preselectDate) {
@@ -118,7 +130,7 @@ const ComposeForm = React.createClass({
 
   render () {
     const { intl, needsPrivacyWarning, mentionedDomains, onPaste } = this.props;
-    const disabled = this.props.is_submitting || this.props.is_uploading;
+    const disabled = this.props.is_submitting;
 
     let publishText    = '';
     let privacyWarning = '';