Example usage for com.vaadin.ui TextArea addFocusListener

Introduction

In this page you can find the example usage for com.vaadin.ui TextArea addFocusListener.

Prototype

@Override
public Registration addFocusListener(FocusListener listener) 

Source Link

Document

Adds a FocusListener to this component, which gets fired when this component receives keyboard focus.

Usage

From source file:zm.hashcode.mshengu.app.util.validation.OnSubmitValidationHelper.java

public void doValidation() {
    TextField textField = new TextField();
    TextArea textArea = new TextArea();
    DateField dateField = new DateField();
    ComboBox comboBox = new ComboBox();
    for (Field o : fields) {

        String currentMessage = "";
        try {//from  w  ww .j  a  v a 2s.  c o m
            if (o instanceof TextField) {
                textField = (TextField) o;
                textField.validate();
            } else if (o instanceof TextArea) {
                textArea = (TextArea) o;
                textArea.validate();
            } else if (o instanceof DateField) {
                dateField = (DateField) o;
                dateField.validate();
            } else if (o instanceof ComboBox) {
                comboBox = (ComboBox) o;
                comboBox.validate();
            }

        } catch (Validator.InvalidValueException x) { //works with vaadin required
            currentMessage = x.getMessage();
            if (o instanceof TextField) {
                textField.setStyleName("invalid");
            } else if (o instanceof TextArea) {
                textArea.setStyleName("invalid");
            } else if (o instanceof DateField) {
                dateField.setStyleName("invalid");
            } else if (o instanceof ComboBox) {
                comboBox.setStyleName("invalid");
            }

        } finally {
            if (o instanceof TextField) {
                textField.addFocusListener(
                        new LabelErrorMessageManipulator(textField, errorLabel, currentMessage)); //custom focus handler for displaying error message on a labe when you focus on an errored Textfield                       
            } else if (o instanceof TextArea) {
                textArea.addFocusListener(
                        new LabelErrorMessageManipulator(textArea, errorLabel, currentMessage)); //custom focus handler for displaying error message on a labe when you focus on an errored Textfield
            } else if (o instanceof DateField) {
                dateField.addFocusListener(
                        new LabelErrorMessageManipulator(dateField, errorLabel, currentMessage)); //custom focus handler for displaying error message on a labe when you focus on an errored Textfield                
            } else if (o instanceof ComboBox) {
                comboBox.addFocusListener(
                        new LabelErrorMessageManipulator(comboBox, errorLabel, currentMessage)); //custom focus handler for displaying error message on a labe when you focus on an errored Textfield
            }
        }

        if (o instanceof TextField) {
            textField.addBlurListener(new LabelErrorMessageManipulator(textField, errorLabel, currentMessage)); //custom blur handler for displaying error message on a labe when you blur on an errored Textfield                       
        } else if (o instanceof TextArea) {
            textArea.addBlurListener(new LabelErrorMessageManipulator(textArea, errorLabel, currentMessage)); //custom blur handler for displaying error message on a labe when you blur on an errored Textfield
        } else if (o instanceof DateField) {
            dateField.addBlurListener(new LabelErrorMessageManipulator(dateField, errorLabel, currentMessage)); //custom blur handler for displaying error message on a labe when you blur on an errored Textfield
        } else if (o instanceof ComboBox) {
            comboBox.addBlurListener(new LabelErrorMessageManipulator(comboBox, errorLabel, currentMessage)); //custom blur handler for displaying error message on a labe when you blur on an errored Textfield
        }
    }

}

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