Disables auto-completion's text processing on iOS 9 when the keyboard trackpad is enabled on iPad. Fixes slackhq#267

Author: Ignacio Romero Zurbuchen

Source/Classes/SLKTextView.h

@@ -67,6 +67,9 @@ typedef NS_OPTIONS(NSUInteger, SLKPastableMediaType) {
 /** YES if the magnifying glass is visible. */
 @property (nonatomic, getter=isLoupeVisible) BOOL loupeVisible;
 
+/** YES if the keyboard track pad has been recognized. iOS 9 only. */
+@property (nonatomic, readonly, getter=isTrackpadEnabled) BOOL trackpadEnabled;
+
 /** YES if autocorrection and spell checking are enabled. On iOS8, this property also controls the predictive QuickType bar from being visible. Default is YES. */
 @property (nonatomic, getter=isTypingSuggestionEnabled) BOOL typingSuggestionEnabled;
 

Source/Classes/SLKTextView.m

@@ -500,6 +500,31 @@ - (void)setTextAlignment:(NSTextAlignment)textAlignment
 }
 
 
+#pragma mark - UITextInput Overrides
+
+- (void)beginFloatingCursorAtPoint:(CGPoint)point
+{
+    _trackpadEnabled = YES;
+}
+
+- (void)updateFloatingCursorAtPoint:(CGPoint)point
+{
+    // Do something
+}
+
+- (void)endFloatingCursor
+{
+    _trackpadEnabled = NO;
+    
+    // We still need to notify a selection change in the textview after the trackpad is disabled
+    if (self.delegate && [self.delegate respondsToSelector:@selector(textViewDidChangeSelection:)]) {
+        [self.delegate textViewDidChangeSelection:self];
+    }
+    
+    [[NSNotificationCenter defaultCenter] postNotificationName:SLKTextViewSelectedRangeDidChangeNotification object:self userInfo:nil];
+}
+
+
 #pragma mark - UIResponder Overrides
 
 - (BOOL)canBecomeFirstResponder
@@ -594,11 +619,11 @@ - (void)paste:(id)sender
 
 - (void)slk_willShowLoupe:(UIGestureRecognizer *)gesture
 {
-    if (gesture.state == UIGestureRecognizerStateChanged) {
-        self.loupeVisible = YES;
+    if (gesture.state == UIGestureRecognizerStateBegan || gesture.state == UIGestureRecognizerStateChanged) {
+        _loupeVisible = YES;
     }
     else {
-        self.loupeVisible = NO;
+        _loupeVisible = NO;
     }
 
     // We still need to notify a selection change in the textview after the magnifying class is dismissed

Source/Classes/SLKTextViewController.m

@@ -656,7 +656,7 @@ - (void)textSelectionDidChange
     }
 
     // Skips if the loupe is visible or if there is a real text selection
-    if (self.textView.isLoupeVisible || self.textView.selectedRange.length > 0) {
+    if (self.textView.isLoupeVisible || self.textView.isTrackpadEnabled || self.textView.selectedRange.length > 0) {
         return;
     }