From 60ccb1ddfd3cd93147f7427ecc1274bf561be35b Mon Sep 17 00:00:00 2001
From: Vitaly Takmazov
Date: Wed, 2 Oct 2019 11:19:37 +0300
Subject: Disable send button on empty text

---
 Juick/Main.storyboard                         |  2 +-
 Juick/ViewControllers/NewPostViewController.h |  2 +-
 Juick/ViewControllers/NewPostViewController.m | 13 +++++++++----
 3 files changed, 11 insertions(+), 6 deletions(-)

diff --git a/Juick/Main.storyboard b/Juick/Main.storyboard
index 81266dd..00ee720 100644
--- a/Juick/Main.storyboard
+++ b/Juick/Main.storyboard
@@ -302,7 +302,7 @@
                         <viewLayoutGuide key="safeArea" id="UJz-7C-l1q"/>
                     </view>
                     <navigationItem key="navigationItem" id="Yd6-Yh-gtd">
-                        <barButtonItem key="rightBarButtonItem" title="Send" id="GOm-zk-CTO">
+                        <barButtonItem key="rightBarButtonItem" enabled="NO" title="Send" id="GOm-zk-CTO">
                             <connections>
                                 <action selector="sendAction:" destination="rr1-jx-MLx" id="Nd3-Zm-2GK"/>
                             </connections>
diff --git a/Juick/ViewControllers/NewPostViewController.h b/Juick/ViewControllers/NewPostViewController.h
index 05e3c73..9d1297c 100644
--- a/Juick/ViewControllers/NewPostViewController.h
+++ b/Juick/ViewControllers/NewPostViewController.h
@@ -12,7 +12,7 @@
 extern NSString * const NewMessageNotificationName;
 extern NSString * const ReplyPostedNotificationName;
 
-@interface NewPostViewController : UIViewController
+@interface NewPostViewController : UIViewController<UITextViewDelegate>
 @property (weak, nonatomic) IBOutlet UITextView *textView;
 @property (weak, nonatomic) IBOutlet NSLayoutConstraint *bottomConstraint;
 
diff --git a/Juick/ViewControllers/NewPostViewController.m b/Juick/ViewControllers/NewPostViewController.m
index afa14a9..b992ed8 100644
--- a/Juick/ViewControllers/NewPostViewController.m
+++ b/Juick/ViewControllers/NewPostViewController.m
@@ -40,13 +40,14 @@ NSString * const ReplyPostedNotificationName = @"ReplyPosted";
     }
     [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillHide:) name:UIKeyboardWillHideNotification object:nil];
     [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardDidShow:) name:UIKeyboardDidShowNotification object:nil];
+    self.textView.delegate = self;
     [self.textView becomeFirstResponder];
 }
 
 - (IBAction)sendAction:(id)sender {
-    self.navigationController.navigationItem.rightBarButtonItem.enabled = NO;
+    self.navigationItem.rightBarButtonItem.enabled = NO;
     if (_replyTo == nil) {
-        self.navigationController.navigationItem.rightBarButtonItem.enabled = YES;
+        self.navigationItem.rightBarButtonItem.enabled = YES;
         [[APIClient sharedClient] postMessage:self.textView.text result:^(Message *msg, NSError *err) {
             if (!err) {
                 [self dismissViewControllerAnimated:YES completion:^{
@@ -58,14 +59,14 @@ NSString * const ReplyPostedNotificationName = @"ReplyPosted";
             }
         }];
     } else {
-        self.navigationController.navigationItem.rightBarButtonItem.enabled = NO;
+        self.navigationItem.rightBarButtonItem.enabled = NO;
         [[APIClient sharedClient] postReplyToThread:_replyTo.mid inReplyTo:_replyTo.rid text:self.textView.text result:^(Message *msg, NSError *err) {
             if (!err) {
                 [self dismissViewControllerAnimated:YES completion:^{
                     [[NSNotificationCenter defaultCenter] postNotificationName:ReplyPostedNotificationName object:msg];
                 }];
             } else {
-                self.navigationController.navigationItem.rightBarButtonItem.enabled = YES;
+                self.navigationItem.rightBarButtonItem.enabled = YES;
                 // TODO: display error
             }
         }];
@@ -96,4 +97,8 @@ NSString * const ReplyPostedNotificationName = @"ReplyPosted";
     return _inputAccessoryView;
 }
 
+- (void)textViewDidChange:(UITextView *)textView {
+    self.navigationItem.rightBarButtonItem.enabled = [textView.text length];
+}
+
 @end
-- 
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