- Code optimized

DTTextField.podspec

@@ -9,7 +9,7 @@
 Pod::Spec.new do |s|
 
 s.name             = 'DTTextField'
-s.version          = '0.2.1'
+s.version          = '0.2.3'
 s.summary          = 'DTTextField is UITextField library.'
 
   s.description      = <<-DESC

DTTextField/Classes/DTTextField.swift

@@ -10,7 +10,7 @@ import Foundation
 import UIKit
 
 public extension String {
-
+    
     var isEmptyStr:Bool{
         return self.trimmingCharacters(in: NSCharacterSet.whitespaces).isEmpty
     }
@@ -18,17 +18,24 @@ public extension String {
 
 public class DTTextField: UITextField {
     
-    fileprivate var lblFloatPlaceholder:UILabel = UILabel()
-    fileprivate var lblError:UILabel            = UILabel()
+    public enum FloatingDisplayStatus{
+        case always
+        case never
+        case defaults
+    }
+    
+    fileprivate var lblFloatPlaceholder:UILabel             = UILabel()
+    fileprivate var lblError:UILabel                        = UILabel()
     
     fileprivate let paddingX:CGFloat                        = 5.0
-    fileprivate let floatingLabelShowAnimationDuration      = 0.3
+    
     fileprivate let paddingHeight:CGFloat                   = 10.0
     
-    public var dtLayer:CALayer                         = CALayer()
-    public var floatPlaceholderColor:UIColor           = UIColor.black
-    public var floatPlaceholderActiveColor:UIColor     = UIColor.black
-    
+    public var dtLayer:CALayer                              = CALayer()
+    public var floatPlaceholderColor:UIColor                = UIColor.black
+    public var floatPlaceholderActiveColor:UIColor          = UIColor.black
+    public var floatingLabelShowAnimationDuration           = 0.3
+    public var floatingDisplayStatus:FloatingDisplayStatus  = .defaults
     
     public var errorMessage:String = ""{
         didSet{ lblError.text = errorMessage }
@@ -78,6 +85,14 @@ public class DTTextField: UITextField {
         return paddingX
     }
     
+    fileprivate var fontHeight:CGFloat{
+        return ceil(font!.lineHeight)
+    }
+    
+    fileprivate var dtLayerHeight:CGFloat{
+        return showErrorLabel ? floor(bounds.height - lblError.bounds.size.height - paddingYErrorLabel) : bounds.height
+    }
+    
     fileprivate var floatLabelWidth:CGFloat{
         
         var width = bounds.size.width
@@ -100,12 +115,12 @@ public class DTTextField: UITextField {
     
     fileprivate var isFloatLabelShowing:Bool = false
     
-    public var showError:Bool = false{
+    fileprivate var showErrorLabel:Bool = false{
         didSet{
             
-            guard showError != oldValue else { return }
+            guard showErrorLabel != oldValue else { return }
             
-            guard showError else {
+            guard showErrorLabel else {
                 hideErrorMessage()
                 return
             }
@@ -152,6 +167,15 @@ public class DTTextField: UITextField {
         commonInit()
     }
     
+    public func showError(message:String? = nil) {
+        if let msg = message { errorMessage = msg }
+        showErrorLabel = true
+    }
+    
+    public func hideError()  {
+        showErrorLabel = false
+    }
+    
     fileprivate func commonInit() {
         
         dtLayer.cornerRadius        = 4.5
@@ -202,7 +226,10 @@ public class DTTextField: UITextField {
         
         let animations:(()->()) = {
             self.lblFloatPlaceholder.alpha = 1.0
-            self.lblFloatPlaceholder.frame = CGRect(x: self.lblFloatPlaceholder.frame.origin.x, y: self.paddingYFloatLabel, width: self.lblFloatPlaceholder.bounds.size.width, height: self.lblFloatPlaceholder.bounds.size.height)
+            self.lblFloatPlaceholder.frame = CGRect(x: self.lblFloatPlaceholder.frame.origin.x,
+                                                    y: self.paddingYFloatLabel,
+                                                    width: self.lblFloatPlaceholder.bounds.size.width,
+                                                    height: self.lblFloatPlaceholder.bounds.size.height)
         }
         
         if animated && animateFloatPlaceholder {
@@ -223,7 +250,10 @@ public class DTTextField: UITextField {
         
         let animations:(()->()) = {
             self.lblFloatPlaceholder.alpha = 0.0
-            self.lblFloatPlaceholder.frame = CGRect(x: self.lblFloatPlaceholder.frame.origin.x, y: self.lblFloatPlaceholder.font.lineHeight, width: self.lblFloatPlaceholder.bounds.size.width, height: self.lblFloatPlaceholder.bounds.size.height)
+            self.lblFloatPlaceholder.frame = CGRect(x: self.lblFloatPlaceholder.frame.origin.x,
+                                                    y: self.lblFloatPlaceholder.font.lineHeight,
+                                                    width: self.lblFloatPlaceholder.bounds.size.width,
+                                                    height: self.lblFloatPlaceholder.bounds.size.height)
         }
         
         if animated && animateFloatPlaceholder {
@@ -242,29 +272,39 @@ public class DTTextField: UITextField {
     
     fileprivate func insetRectForEmptyBounds(rect:CGRect) -> CGRect{
         
-        guard showError else { return CGRect(x: x, y: 0, width: rect.width, height: rect.height) }
+        guard showErrorLabel else { return CGRect(x: x, y: 0, width: rect.width - paddingX, height: rect.height) }
         
-        let topInset = (rect.size.height - lblError.bounds.size.height - paddingYErrorLabel - ceil(font!.lineHeight)) / 2.0
-        let textY = ((rect.height - ceil(font!.lineHeight)) / 2.0) - topInset
-        return CGRect(x: x, y: -ceil(textY), width: rect.size.width, height: rect.size.height)
+        let topInset = (rect.size.height - lblError.bounds.size.height - paddingYErrorLabel - fontHeight) / 2.0
+        let textY = topInset - ((rect.height - fontHeight) / 2.0)
+        
+        return CGRect(x: x, y: floor(textY), width: rect.size.width - paddingX, height: rect.size.height)
     }
     
     fileprivate func insetRectForBounds(rect:CGRect) -> CGRect {
+        
         guard !lblFloatPlaceholder.text!.isEmptyStr else { return insetRectForEmptyBounds(rect: rect) }
         
-        if let text = text,text.isEmptyStr {
+        if floatingDisplayStatus == .never {
             return insetRectForEmptyBounds(rect: rect)
         }else{
-            let topInset = paddingYFloatLabel + lblFloatPlaceholder.bounds.size.height + (paddingHeight / 2.0)
-            let textOriginalY = (rect.height - font!.lineHeight) / 2.0
-            let textY = textOriginalY - topInset
-            return CGRect(x: x, y: -ceil(textY), width: rect.size.width, height: rect.size.height)
+            
+            if let text = text,text.isEmptyStr && floatingDisplayStatus == .defaults {
+                return insetRectForEmptyBounds(rect: rect)
+            }else{
+                let topInset = paddingYFloatLabel + lblFloatPlaceholder.bounds.size.height + (paddingHeight / 2.0)
+                let textOriginalY = (rect.height - fontHeight) / 2.0
+                var textY = topInset - textOriginalY
+                
+                if textY < 0 { textY = topInset }
+                
+                return CGRect(x: x, y: ceil(textY), width: rect.size.width - paddingX, height: rect.height)
+            }
         }
     }
     
     @objc fileprivate func textFieldTextChanged(){
-        guard hideErrorWhenEditing && showError else { return }
-        showError = false
+        guard hideErrorWhenEditing && showErrorLabel else { return }
+        showErrorLabel = false
     }
     
     override public var intrinsicContentSize: CGSize{
@@ -274,7 +314,7 @@ public class DTTextField: UITextField {
         
         lblError.sizeToFit()
         
-        if showError {
+        if showErrorLabel {
             lblFloatPlaceholder.sizeToFit()
             return CGSize(width: textFieldIntrinsicContentSize.width,
                           height: textFieldIntrinsicContentSize.height + paddingYFloatLabel + paddingYErrorLabel + lblFloatPlaceholder.bounds.size.height + lblError.bounds.size.height + paddingHeight)
@@ -294,45 +334,45 @@ public class DTTextField: UITextField {
         return insetRectForBounds(rect: rect)
     }
     
-    override public func leftViewRect(forBounds bounds: CGRect) -> CGRect {
-        var rect = super.leftViewRect(forBounds: bounds)
+    fileprivate func insetForSideView(forBounds bounds: CGRect) -> CGRect{
+        var rect = bounds
         rect.origin.y = 0
-        rect.size.height = dtLayer.bounds.height
+        rect.size.height = dtLayerHeight
         return rect
     }
     
+    override public func leftViewRect(forBounds bounds: CGRect) -> CGRect {
+        let rect = super.leftViewRect(forBounds: bounds)
+        return insetForSideView(forBounds: rect)
+    }
+    
     override public func rightViewRect(forBounds bounds: CGRect) -> CGRect {
-        var rect = super.rightViewRect(forBounds: bounds)
-        rect.origin.y = 0
-        rect.size.height = dtLayer.bounds.height
-        return rect
+        let rect = super.rightViewRect(forBounds: bounds)
+        return insetForSideView(forBounds: rect)
     }
     
     override public func clearButtonRect(forBounds bounds: CGRect) -> CGRect {
         var rect = super.clearButtonRect(forBounds: bounds)
-        rect.origin.y = (dtLayer.bounds.height / 2) - (rect.size.height / 2)
+        rect.origin.y = (dtLayerHeight - rect.size.height) / 2
         return rect
     }
     
     override public func layoutSubviews() {
         super.layoutSubviews()
         
-        if showError {
-            
-            dtLayer.frame = CGRect(x: bounds.origin.x,
-                                   y: bounds.origin.y,
-                                   width: bounds.width,
-                                   height: floor(bounds.height - lblError.bounds.size.height - paddingYErrorLabel))
+        CATransaction.begin()
+        CATransaction.setDisableActions(true)
+        dtLayer.frame = CGRect(x: bounds.origin.x,
+                               y: bounds.origin.y,
+                               width: bounds.width,
+                               height: dtLayerHeight)
+        CATransaction.commit()
+        
+        if showErrorLabel {
             
             var lblErrorFrame = lblError.frame
             lblErrorFrame.origin.y = dtLayer.frame.origin.y + dtLayer.frame.size.height + paddingYErrorLabel
             lblError.frame = lblErrorFrame
-            
-        }else{
-            dtLayer.frame = CGRect(x: bounds.origin.x,
-                                   y: bounds.origin.y,
-                                   width: bounds.width,
-                                   height: bounds.height)
         }
         
         let floatingLabelSize = lblFloatPlaceholder.sizeThatFits(lblFloatPlaceholder.superview!.bounds.size)
@@ -343,10 +383,17 @@ public class DTTextField: UITextField {
         
         lblFloatPlaceholder.textColor = isFirstResponder ? floatPlaceholderActiveColor : floatPlaceholderColor
         
-        if let enteredText = text,!enteredText.isEmptyStr{
-            showFloatingLabel(isFirstResponder)
-        }else{
+        switch floatingDisplayStatus {
+        case .never:
             hideFlotingLabel(isFirstResponder)
+        case .always:
+            showFloatingLabel(isFirstResponder)
+        default:
+            if let enteredText = text,!enteredText.isEmptyStr{
+                showFloatingLabel(isFirstResponder)
+            }else{
+                hideFlotingLabel(isFirstResponder)
+            }
         }
     }
 }

Example/DTTextField/ViewController.swift

@@ -28,13 +28,7 @@ class ViewController: UIViewController {
     override func viewDidLoad() {
         super.viewDidLoad()
         
-        title                           = "Registration"
-        txtFirstName.errorMessage       = firstNameMessage
-        txtLastName.errorMessage        = lastNameMessage
-        txtEmail.errorMessage           = emailMessage
-        txtPassword.errorMessage        = passwordMessage
-        txtConfirmPassword.errorMessage = confirmPasswordMessage
-        
+        title = "Registration"
         // Do any additional setup after loading the view, typically from a nib.
     }
     
@@ -93,34 +87,32 @@ extension ViewController{
     func validateData() -> Bool {
         
         guard !txtFirstName.text!.isEmptyStr else {
-            txtFirstName.showError = true
+            txtFirstName.showError(message: firstNameMessage)
             return false
         }
         
         guard !txtLastName.text!.isEmptyStr else {
-            txtLastName.showError = true
+            txtLastName.showError(message: lastNameMessage)
             return false
         }
         
         guard !txtEmail.text!.isEmptyStr else {
-            txtEmail.showError = true
+            txtEmail.showError(message: emailMessage)
             return false
         }
         
         guard !txtPassword.text!.isEmptyStr else {
-            txtPassword.showError = true
+            txtPassword.showError(message: passwordMessage)
             return false
         }
         
         guard !txtConfirmPassword.text!.isEmptyStr else {
-            txtConfirmPassword.errorMessage = confirmPasswordMessage
-            txtConfirmPassword.showError = true
+            txtConfirmPassword.showError(message: confirmPasswordMessage)
             return false
         }
         
         guard txtPassword.text == txtConfirmPassword.text else {
-            txtConfirmPassword.errorMessage = mismatchPasswordMessage
-            txtConfirmPassword.showError = true
+            txtConfirmPassword.showError(message: mismatchPasswordMessage)
             return false
         }
         

README.md

@@ -1,8 +1,9 @@
 # DTTextField
 
-![Version](https://img.shields.io/badge/Pod-V0.2.1-green.svg)
-![License](https://img.shields.io/github/license/mashape/apistatus.svg)
-![Platform](https://img.shields.io/badge/Language-Swift_3.0-orange.svg)
+[![Version](https://img.shields.io/badge/Pod-V0.2.3-green.svg)](https://github.com/iDhaval/DTTextField/releases/tag/0.2.3)
+[![License](https://img.shields.io/github/license/mashape/apistatus.svg)](https://github.com/iDhaval/DTTextField/blob/master/LICENSE)
+[![Awesome](https://cdn.rawgit.com/sindresorhus/awesome/d7305f38d29fed78fa85652e3a63e154dd8e8829/media/badge.svg)](https://github.com/matteocrippa/awesome-swift)
+[![Platform](https://img.shields.io/badge/Language-Swift_3.0-orange.svg)](https://developer.apple.com/library/content/documentation/Swift/Conceptual/Swift_Programming_Language/)
 ![Xcode](https://img.shields.io/badge/Xcode-8.0-blue.svg)
 
 ![Demo](https://github.com/iDhaval/DTTextField/blob/master/DTTextField.gif?raw=true)
@@ -43,24 +44,31 @@ pod 'DTTextField'
 | ------------- |------------- | ----- |
 | errorMessage | String | Add your error message to this property|
 | errorFont | UIFont | Change font of error text |
-| showError | Bool | Use to toggle error message|
 | paddingYErrorLabel | CGFloat | Error text top padding |
 | floatPlaceholderColor | UIColor | To change float placeholder color |
 | floatPlaceholderActiveColor | UIColor | To change float placeholder color while TextField is active(First responder)|
 | floatPlaceholderFont | UIFont | Change font of float placeholder |
 | paddingYFloatLabel | CGFloat | float placeholder top padding |
 | placeholderColor | UIColor | change placeholder color |
-
+| animateFloatPlaceholder | Bool | animate float placeholder label |
+| hideErrorWhenEditing | Bool | hide error label when typing |
+| floatingDisplayStatus | enum | maintain display status always, never, defaults | 
 
 ### Important Properties
 
-
 | Property name | Type | Remark |
 | ------------- |------------- | ----- |
 | dtLayer | CALayer | If you want to formate DTTextField than use dtLayer property instead of layer |
 | borderColor | UIColor | Change border color of DTTextField |
 | canShowBorder | Bool | Toggle border of DTTextField |
 
+## Methods
+
+| Method Name | Remark |
+| ------------|--------|
+| showError | to show error message |
+| hideError | to hide error message |
+
 ## TODO
 * Add inbuilt validation