Sample 1

CalcActionListener.java

package org.apache.myfaces.examples.example1;

import javax.faces.component.UIComponent;

import javax.faces.context.FacesContext;

import javax.faces.el.VariableResolver;

import javax.faces.event.AbortProcessingException;

import javax.faces.event.ActionEvent;

import javax.faces.event.ActionListener;

public class CalcActionListener

implements ActionListener

{

public void processAction(ActionEvent event) throws AbortProcessingException

{

FacesContext facesContext = FacesContext.getCurrentInstance();

UIComponent component = event.getComponent();

VariableResolver vr = facesContext.getApplication().getVariableResolver();

CalcForm form = (CalcForm)vr.resolveVariable(facesContext, "calcForm");

if (component.getId().equals("addButton") ||

component.getId().equals("href1"))

{

form.add();

}

else

{

form.subtract();

}

}

}

CalcForm.java

package org.apache.myfaces.examples.example1;

import java.io.Serializable;

import java.math.BigDecimal;

public class CalcForm

implements Serializable

{

private BigDecimal number1 = new BigDecimal(0);

private BigDecimal number2 = new BigDecimal(0);

private BigDecimal result = new BigDecimal(0);

public void add()

{

result = number1.add(number2);

}

public void subtract()

{

result = number1.subtract(number2);

}

//getters and setters

}

UcaseActionListener.java

package org.apache.myfaces.examples.example1;

import javax.faces.component.UIComponent;

import javax.faces.context.FacesContext;

import javax.faces.el.VariableResolver;

import javax.faces.event.AbortProcessingException;

import javax.faces.event.ActionEvent;

import javax.faces.event.ActionListener;

public class UCaseActionListener

implements ActionListener

{

public void processAction(ActionEvent event) throws AbortProcessingException

{

FacesContext facesContext = FacesContext.getCurrentInstance();

UIComponent component = event.getComponent();

VariableResolver vr = facesContext.getApplication().getVariableResolver();

UCaseForm form = (UCaseForm)vr.resolveVariable(facesContext, "ucaseForm");

if (component.getId().equals("ucaseButton"))

{

form.uppercase();

}

else

{

form.lowercase();

}

}

}

UcaseForm.java

package org.apache.myfaces.examples.example1;

import java.io.Serializable;

public class UCaseForm

implements Serializable

{

private String text = "";

public void uppercase()

{

text = text.toUpperCase();

}

public void lowercase()

{

text = text.toLowerCase();

}

public String getText()

{

return text;

}

public void setText(String text)

{

this.text = text;

}

/**

* Test method for method binding.

*/

public String jumpHome()

{

System.out.println("JumpHome Action was called.");

return "jump_home";

}

}

ValidationController.java

package org.apache.myfaces.examples.example1;

import javax.faces.component.UIInput;

import javax.faces.context.FacesContext;

import javax.faces.validator.LengthValidator;

import javax.faces.validator.LongRangeValidator;

import javax.faces.validator.Validator;

public class ValidationController

{

public String enableValidation()

{

FacesContext facesContext = FacesContext.getCurrentInstance();

UIInput number1 = (UIInput)facesContext.getViewRoot().findComponent("form1:number1");

Validator[] validators = number1.getValidators();

if (validators == null || validators.length == 0)

{

number1.addValidator(new LongRangeValidator(10, 1));

}

UIInput number2 = (UIInput)facesContext.getViewRoot().findComponent("form1:number2");

validators = number2.getValidators();

if (validators == null || validators.length == 0)

{

number2.addValidator(new LongRangeValidator(50, 20));

}

UIInput text = (UIInput)facesContext.getViewRoot().findComponent("form2:text");

validators = text.getValidators();

if (validators == null || validators.length == 0)

{

text.addValidator(new LengthValidator(7, 3));

}

return "ok";

}

public String disableValidation()

{

FacesContext facesContext = FacesContext.getCurrentInstance();

UIInput number1 = (UIInput)facesContext.getViewRoot().findComponent("form1:number1");

Validator[] validators = number1.getValidators();

if (validators != null)

{

for (int i = 0; i < validators.length; i++)

{

Validator validator = validators[i];

number1.removeValidator(validator);

}

}

UIInput number2 = (UIInput)facesContext.getViewRoot().findComponent("form1:number2");

validators = number2.getValidators();

if (validators != null)

{

for (int i = 0; i < validators.length; i++)

{

Validator validator = validators[i];

number2.removeValidator(validator);

}

}

UIInput text = (UIInput)facesContext.getViewRoot().findComponent("form2:text");

validators = text.getValidators();

if (validators != null)

{

for (int i = 0; i < validators.length; i++)

{

Validator validator = validators[i];

text.removeValidator(validator);

}

}

return "ok";

}

public String getNumber1ValidationLabel()

{

FacesContext facesContext = FacesContext.getCurrentInstance();

UIInput number1 = (UIInput)facesContext.getViewRoot().findComponent("form1:number1");

Validator[] validators = number1.getValidators();

if (validators != null && validators.length > 0)

{

long min = ((LongRangeValidator)validators[0]).getMinimum();

long max = ((LongRangeValidator)validators[0]).getMaximum();

return " (" + min + "-" + max + ")";

}

else

{

return "";

}

}

public String getNumber2ValidationLabel()

{

FacesContext facesContext = FacesContext.getCurrentInstance();

UIInput number1 = (UIInput)facesContext.getViewRoot().findComponent("form1:number2");

Validator[] validators = number1.getValidators();

if (validators != null && validators.length > 0)

{

long min = ((LongRangeValidator)validators[0]).getMinimum();

long max = ((LongRangeValidator)validators[0]).getMaximum();

return " (" + min + "-" + max + ")";

}

else

{

return "";

}

}

public String getTextValidationLabel()

{

FacesContext facesContext = FacesContext.getCurrentInstance();

UIInput number1 = (UIInput)facesContext.getViewRoot().findComponent("form2:text");

Validator[] validators = number1.getValidators();

if (validators != null && validators.length > 0)

{

long min = ((LengthValidator)validators[0]).getMinimum();

long max = ((LengthValidator)validators[0]).getMaximum();

return " (" + min + "-" + max + " chars)";

}

else

{

return "";

}

}

}