Add custom error message in all rules for view extension methods

In the view_ktx package, there are few classes for view extensions such as EditTextKtx.kt, TextViewKtx.kt etc. These classes contains kotlin extension methods of validation rules for respective Views.

For example, EditTextKtx.kt for NonEmptyRule check, we have two methods (one normal, and other with callback) like:

fun EditText.nonEmpty() : Boolean
{
    return validator().nonEmpty().check()
}

fun EditText.nonEmpty(callback: (message: String) -> Unit) : Boolean
{
    return validator().nonEmpty()
            .addErrorCallback {
                callback.invoke(it)
            }
            .check()
}

Task The goal of this task is to add a Nullable parameter with name errorMsg in each of these methods and pass it in the validation check in the method definition like this:

fun EditText.nonEmpty(errorMsg:String? = null) : Boolean
{
    return validator().nonEmpty(errorMsg).check()
}

fun EditText.nonEmpty(callback: (message: String) -> Unit, errorMsg:String? = null) : Boolean
{
    return validator().nonEmpty(errorMsg)
            .addErrorCallback {
                callback.invoke(it)
            }
            .check()
}

Please note that how I have passed the errorMsg paramter in the checks of validator() inside the method definitions.

This should be done for all methods of 5 classes inside view_ktx package:

• EditTextKtx.kt
• TextViewKtx.kt
• SpinnerKtx.kt
• StringKtx.kt
• AutoCompleteTextViewKtx.kt

[emaiax]

Also, I would like to have all validations checked at once instead of checking if all fields are validated one by one, since the validate method instantly breaks the loop if the first check returns false.

What a failFast: Boolean = true option? It makes sense @wajahatkarim3? I’d be happy to contribute for that.

[wajahatkarim3]

@emaiax I have fixed the compile errors and also finished this issue. So, I am closing this issue and also issue #29 as that was also part of this issue.