com.mobsandgeeks.saripaar

Class Validator

java.lang.Object

com.mobsandgeeks.saripaar.Validator

public class Validator
extends java.lang.Object

The Validator takes care of validating the Views in the given controller instance. Usually, an Activity or a Fragment. However, it can also be used with other controller classes that contain references to View objects.

The Validator is capable of performing validations in two modes,

1. Validator.Mode.BURST, where all the views are validated and all errors are reported via the callback at once. Fields need not be ordered using the Order annotation in BURST mode.
2. Validator.Mode.IMMEDIATE, in which the validation stops and the error is reported as soon as a Rule fails. To use this mode, the fields SHOULD BE ordered using the Order annotation.

There are three flavors of the validate() method.

1. validate(), no frills regular validation that validates all Views.
2. validateTill(android.view.View), validates all Views till the one that is specified.
3. validateBefore(android.view.View), validates all Views before the specified View.

It is imperative that the fields are ordered while making the validateTill(android.view.View) and validateBefore(android.view.View) method calls.

The Validator requires a Validator.ValidationListener that reports the outcome of the validation.

• Validator.ValidationListener.onValidationSucceeded() is called if all Rules pass.
• The Validator.ValidationListener.onValidationFailed(java.util.List) callback reports errors caused by failures. In Validator.Mode.IMMEDIATE this callback will contain just one instance of the ValidationError object.

Since:

1.0

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	Validator.Mode Validation mode.
static interface	Validator.ValidationListener Listener with callback methods that notifies the outcome of validation.
static interface	Validator.ViewValidatedAction Interface that provides a callback when all Rules associated with a View passes.

Constructor Summary

Constructors

Constructor and Description
Validator(java.lang.Object controller) Constructor.

Method Summary

Modifier and Type	Method and Description
boolean	cancelAsync() Cancels a running asynchronous validation task.
Validator.Mode	getValidationMode() Gets the current Validator.Mode.
boolean	isValidating() Used to find if an asynchronous validation task is running.
<VIEW extends android.view.View> void	put(VIEW view, QuickRule<VIEW>... quickRules) Add one or more QuickRules for a View.
<VIEW extends android.view.View,DATA_TYPE> void	registerAdapter(java.lang.Class<VIEW> viewType, ViewDataAdapter<VIEW,DATA_TYPE> viewDataAdapter) Registers a ViewDataAdapter for the given View.
static void	registerAnnotation(java.lang.Class<? extends java.lang.annotation.Annotation> ruleAnnotation) A convenience method for registering Rule annotations that act on TextView and it's children, the most notable one being EditText.
static <VIEW extends android.view.View> void	registerAnnotation(java.lang.Class<? extends java.lang.annotation.Annotation> annotation, java.lang.Class<VIEW> viewType, ViewDataAdapter<VIEW,?> viewDataAdapter) An elaborate method for registering custom rule annotations.
void	removeRules(android.view.View view) Remove all Rules for the given View.
void	setValidationListener(Validator.ValidationListener validationListener) Set a Validator.ValidationListener to the Validator.
void	setValidationMode(Validator.Mode validationMode) Set the validation Validator.Mode for the current Validator instance.
void	setViewValidatedAction(Validator.ViewValidatedAction viewValidatedAction) Set a Validator.ViewValidatedAction to the Validator.
void	validate() Validates all Views with Rules.
void	validate(boolean async) Validates all Views with Rules.
void	validateBefore(android.view.View view) Validates all Views before the specified View parameter.
void	validateBefore(android.view.View view, boolean async) Validates all Views before the specified View parameter.
void	validateTill(android.view.View view) Validates all Views till the specified View parameter.
void	validateTill(android.view.View view, boolean async) Validates all Views till the specified View parameter.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Validator

public Validator(java.lang.Object controller)

Constructor.

Parameters:

controller - The class containing Views to be validated. Usually, an Activity or a Fragment.

Method Detail

registerAnnotation

public static void registerAnnotation(java.lang.Class<? extends java.lang.annotation.Annotation> ruleAnnotation)

A convenience method for registering Rule annotations that act on TextView and it's children, the most notable one being EditText. Register custom annotations for TextViews that validates Double, Float, Integer and String types.

For registering rule annotations for other view types see, registerAdapter(Class, com.mobsandgeeks.saripaar.adapter.ViewDataAdapter).

Parameters:

ruleAnnotation - A rule Annotation.

registerAnnotation

public static <VIEW extends android.view.View> void registerAnnotation(java.lang.Class<? extends java.lang.annotation.Annotation> annotation,
                                                                       java.lang.Class<VIEW> viewType,
                                                                       ViewDataAdapter<VIEW,?> viewDataAdapter)

An elaborate method for registering custom rule annotations.

Type Parameters:

VIEW - The View for which the Annotation and ViewDataAdapter is being registered.

Parameters:

annotation - The annotation that you want to register.

viewType - The View type.

viewDataAdapter - An instance of the ViewDataAdapter for your View.

registerAdapter

public <VIEW extends android.view.View,DATA_TYPE> void registerAdapter(java.lang.Class<VIEW> viewType,
                                                                       ViewDataAdapter<VIEW,DATA_TYPE> viewDataAdapter)

Registers a ViewDataAdapter for the given View.

Type Parameters:

VIEW - The View type.

DATA_TYPE - The ViewDataAdapter type.

Parameters:

viewType - The View for which a ViewDataAdapter is being registered.

viewDataAdapter - A ViewDataAdapter instance.

setValidationListener

public void setValidationListener(Validator.ValidationListener validationListener)

Set a Validator.ValidationListener to the Validator.

Parameters:

validationListener - A Validator.ValidationListener instance. null throws an IllegalArgumentException.

setViewValidatedAction

public void setViewValidatedAction(Validator.ViewValidatedAction viewValidatedAction)

Set a Validator.ViewValidatedAction to the Validator.

Parameters:

viewValidatedAction - A Validator.ViewValidatedAction instance.

setValidationMode

public void setValidationMode(Validator.Mode validationMode)

Set the validation Validator.Mode for the current Validator instance.

Parameters:

validationMode - Validator.Mode.BURST or Validator.Mode.IMMEDIATE, null throws an IllegalArgumentException.

getValidationMode

public Validator.Mode getValidationMode()

Gets the current Validator.Mode.

Returns:

The current validation mode of the Validator.

validate

public void validate()

Validates all Views with Rules. When validating in Validator.Mode.IMMEDIATE, all View fields must be ordered using the Order annotation.

validateBefore

public void validateBefore(android.view.View view)

Validates all Views before the specified View parameter. View fields MUST be ordered using the Order annotation.

Parameters:

view - A View.

validateTill

public void validateTill(android.view.View view)

Validates all Views till the specified View parameter. View fields MUST be ordered using the Order annotation.

Parameters:

view - A View.

validate

public void validate(boolean async)

Validates all Views with Rules. When validating in Validator.Mode.IMMEDIATE, all View fields must be ordered using the Order annotation. Asynchronous calls will cancel any pending or ongoing asynchronous validation and start a new one.

Parameters:

async - true if asynchronous, false otherwise.

validateBefore

public void validateBefore(android.view.View view,
                           boolean async)

Validates all Views before the specified View parameter. View fields MUST be ordered using the Order annotation. Asynchronous calls will cancel any pending or ongoing asynchronous validation and start a new one.

Parameters:

view - A View.

async - true if asynchronous, false otherwise.

validateTill

public void validateTill(android.view.View view,
                         boolean async)

Validates all Views till the specified View parameter. View fields MUST be ordered using the Order annotation. Asynchronous calls will cancel any pending or ongoing asynchronous validation and start a new one.

Parameters:

view - A View.

async - true if asynchronous, false otherwise.

isValidating

public boolean isValidating()

Used to find if an asynchronous validation task is running. Useful only when you run the Validator in asynchronous mode.

Returns:

true if the asynchronous task is running, false otherwise.

cancelAsync

public boolean cancelAsync()

Cancels a running asynchronous validation task.

Returns:

true if a running asynchronous task was cancelled, false otherwise.

put

public <VIEW extends android.view.View> void put(VIEW view,
                                                 QuickRule<VIEW>... quickRules)

Add one or more QuickRules for a View.

Type Parameters:

VIEW - The View type for which the QuickRules are being registered.

Parameters:

view - A View for which QuickRule(s) are to be added.

quickRules - Varargs of QuickRules.

removeRules

public void removeRules(android.view.View view)

Remove all Rules for the given View.

Parameters:

view - The View whose rules should be removed.