         // Width and height constraints with a lower priority
         contentViewEqualWidthConstraint = contentViewConstraintEqual(.Width)
         // If equal width is not required, set its priority to a low value
-        if !contentViewWidthEqualsToScrollView {
+        if contentViewWidthEqualsToScrollView == false {
             // Set its priority to be a very low value, to avoid conflicts
             contentViewEqualWidthConstraint.priority = 10
         }
 		
         contentViewEqualHeightConstraint = contentViewConstraintEqual(.Height)
-        if !contentViewHeightEqualsToScrollView {
+        if contentViewHeightEqualsToScrollView == false {
             contentViewEqualHeightConstraint.priority = 10
         }
 		

    :param: keyboardRect Current keyboard frame
    */
    private func makeActiveTextFieldVisible(var keyboardRect: CGRect) {
        if activeTextField == nil { return }
        // flipLandscapeFrameForIOS7 only changes CGRect for landscape on iOS7
        keyboardRect = flipLandscapeFrameForIOS7(keyboardRect)
        

        }
		
        // Enlarge the targetFrame, give top and bottom some points margin
        var targetFrame = flipLandscapeFrameForIOS7(activeTextField.convertRect(activeTextField.bounds, toView: self))
        
        // Add top & bottom margins for target frame
        targetFrame.origin.y -= textFieldMargin
