/*******************************************************************************

 *

 * Copyright 2011 Spiffy UI Team   

 * 

 * Licensed under the Apache License, Version 2.0 (the "License");

 * you may not use this file except in compliance with the License.

 * You may obtain a copy of the License at

 *

 *     http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 *

 ******************************************************************************/

package org.spiffyui.spsample.client;



import java.util.ArrayList;

import java.util.Date;

import java.util.List;



import org.spiffyui.client.JSUtil;

import org.spiffyui.client.MessageUtil;

import org.spiffyui.client.widgets.DatePickerTextBox;

import org.spiffyui.client.widgets.FormFeedback;

import org.spiffyui.client.widgets.button.FancyButton;

import org.spiffyui.client.widgets.button.FancySaveButton;



import com.google.gwt.core.client.GWT;

import com.google.gwt.event.dom.client.ClickEvent;

import com.google.gwt.event.dom.client.ClickHandler;

import com.google.gwt.event.dom.client.KeyCodes;

import com.google.gwt.event.dom.client.KeyUpEvent;

import com.google.gwt.event.dom.client.KeyUpHandler;

import com.google.gwt.user.client.Timer;

import com.google.gwt.user.client.ui.HTMLPanel;

import com.google.gwt.user.client.ui.PasswordTextBox;

import com.google.gwt.user.client.ui.RadioButton;

import com.google.gwt.user.client.ui.RootPanel;

import com.google.gwt.user.client.ui.TextArea;

import com.google.gwt.user.client.ui.TextBox;

import com.google.gwt.user.client.ui.TextBoxBase;

import com.google.gwt.user.client.ui.Widget;



/**

 * This is the form sample panel

 *

 */

public class FormPanel extends HTMLPanel implements KeyUpHandler

{

    private static final SPSampleStrings STRINGS = (SPSampleStrings) GWT.create(SPSampleStrings.class);



    private static final String WIDE_TEXT_FIELD = "wideTextField";

    

    private TextBox m_firstName;

    private FormFeedback m_firstNameFeedback;

    

    private TextBox m_lastName;

    private FormFeedback m_lastNameFeedback;

    

    private TextBox m_email;

    private FormFeedback m_emailFeedback;

    

    private TextBox m_password;

    private FormFeedback m_passwordFeedback;

    

    private TextBox m_passwordRepeat;

    private FormFeedback m_passwordRepeatFeedback;

    

    private DatePickerTextBox m_bDay;

    private FormFeedback m_bDayFeedback;

    

    private TextArea m_userDesc;

    private FormFeedback m_userDescFeedback;

    

    private TextArea m_securityQuestion;

    private FormFeedback m_securityQuestionFeedback;

    

    private TextBox m_securityAnswer;

    private FormFeedback m_securityAnswerFeedback;

    

    private FancyButton m_save;



    private List<FormFeedback> m_feedbacks = new ArrayList<FormFeedback>();

    

    /**

     * Creates a new forms panel

     */

    public FormPanel()

    {

        super("div", STRINGS.FormPanel_html() + STRINGS.FormPanelContent_html());

        

        getElement().setId("formPanel");

        

        RootPanel.get("mainContent").add(this);

        

        setVisible(false);

        

        /*

         First name

         */

        m_firstName = new TextBox();

        m_firstName.addKeyUpHandler(this);

        m_firstName.getElement().setId("firstNameTxt");

        m_firstName.getElement().addClassName(WIDE_TEXT_FIELD);

        add(m_firstName, "firstName");

        

        m_firstNameFeedback = new FormFeedback();

        m_feedbacks.add(m_firstNameFeedback);

        add(m_firstNameFeedback, "firstNameRow");

        

        /*

         Last name

         */

        m_lastName = new TextBox();

        m_lastName.addKeyUpHandler(this);

        m_lastName.getElement().setId("lastNameTxt");

        m_lastName.getElement().addClassName(WIDE_TEXT_FIELD);

        add(m_lastName, "lastName");

        

        m_lastNameFeedback = new FormFeedback();

        m_feedbacks.add(m_lastNameFeedback);

        add(m_lastNameFeedback, "lastNameRow");

        

        /*

         email

         */

        m_email = new TextBox();

        m_email.addKeyUpHandler(this);

        m_email.getElement().setId("emailTxt");

        m_email.getElement().addClassName(WIDE_TEXT_FIELD);

        add(m_email, "email");

        

        m_emailFeedback = new FormFeedback();

        m_feedbacks.add(m_emailFeedback);

        add(m_emailFeedback, "emailRow");

        

        /*

         User's birthdate

         */

        m_bDay = new DatePickerTextBox("userBdayTxt");

        m_bDay.setMaximumDate(new Date()); //user cannot be born tomorrow

        m_bDay.addKeyUpHandler(this);

        m_bDay.getElement().addClassName("slimTextField");

        add(m_bDay, "userBday");

        

        m_bDayFeedback = new FormFeedback();

        add(m_bDayFeedback, "userBdayRow");

        

        /*

         User's gender

         */

        RadioButton female = new RadioButton("userGender", "Female");

        add(female, "userGender");

        

        RadioButton male = new RadioButton("userGender", "Male");

        male.addStyleName("radioOption");

        male.setValue(true);

        male.getElement().setId("userMale");

        add(male, "userGender");

        

        /*

         User description

         */

        m_userDesc = new TextArea();

        m_userDesc.addKeyUpHandler(this);

        m_userDesc.getElement().setId("userDescTxt");

        m_userDesc.getElement().addClassName(WIDE_TEXT_FIELD);

        add(m_userDesc, "userDesc");

        

        m_userDescFeedback = new FormFeedback();

        m_feedbacks.add(m_userDescFeedback);

        add(m_userDescFeedback, "userDescRow");

        

        /*

         Password

         */

        m_password = new PasswordTextBox();

        m_password.addKeyUpHandler(this);

        m_password.getElement().setId("passwordTxt");

        m_password.getElement().addClassName("slimTextField");

        add(m_password, "password");

        

        m_passwordFeedback = new FormFeedback();

        m_feedbacks.add(m_passwordFeedback);

        add(m_passwordFeedback, "passwordRow");

        

        /*

         Password repeat

         */

        m_passwordRepeat = new PasswordTextBox();

        m_passwordRepeat.addKeyUpHandler(this);

        m_passwordRepeat.getElement().setId("passwordRepeatTxt");

        m_passwordRepeat.getElement().addClassName("slimTextField");

        add(m_passwordRepeat, "passwordRepeat");

        

        m_passwordRepeatFeedback = new FormFeedback();

        m_feedbacks.add(m_passwordRepeatFeedback);

        add(m_passwordRepeatFeedback, "passwordRepeatRow");

        

        /*

         Security Question

         */

        m_securityQuestion = new TextArea();

        m_securityQuestion.addKeyUpHandler(this);

        m_securityQuestion.getElement().setId("securityQuestionTxt");

        m_securityQuestion.getElement().addClassName(WIDE_TEXT_FIELD);

        add(m_securityQuestion, "securityQuestion");

        

        m_securityQuestionFeedback = new FormFeedback();

        m_feedbacks.add(m_securityQuestionFeedback);

        add(m_securityQuestionFeedback, "securityQuestionRow");

        

        /*

         Security answer

         */

        m_securityAnswer = new TextBox();

        m_securityAnswer.addKeyUpHandler(this);

        m_securityAnswer.getElement().setId("securityAnswerTxt");

        m_securityAnswer.getElement().addClassName(WIDE_TEXT_FIELD);

        add(m_securityAnswer, "securityAnswer");

        

        m_securityAnswerFeedback = new FormFeedback();

        m_feedbacks.add(m_securityAnswerFeedback);

        add(m_securityAnswerFeedback, "securityAnswerRow");

        

        

        

        /*

         The big save button

         */

        m_save = new FancySaveButton(Index.getStrings().save());

        m_save.addClickHandler(new ClickHandler() {

                public void onClick(ClickEvent event)

                {

                    save();

                }

            });

        

        add(m_save, "page2Buttons");

        updateFormStatus(null);

    }

    

    @Override

    public void onKeyUp(KeyUpEvent event)

    {

        if (event.getNativeKeyCode() != KeyCodes.KEY_TAB) {

            updateFormStatus((Widget) event.getSource());

        }

    }

    

    private void updateFormStatus(Widget w)

    {

        if (w == m_firstName) {

            validateField(m_firstName, 2, m_firstNameFeedback, Index.getStrings().firstName_tt());

        } else if (w == m_lastName) {

            validateField(m_lastName, 2, m_lastNameFeedback, Index.getStrings().lastName_tt());

        } else if (w == m_email) {

            validateEmail();

        } else if (w == m_password) {

            validateField(m_password, 2, m_passwordFeedback, Index.getStrings().pwd_tt());

        } else if (w == m_bDay) {

            validateBirthday();

        } else if (w == m_securityQuestion) {

            validateField(m_securityQuestion, 2, m_securityQuestionFeedback, Index.getStrings().question_tt());

        } else if (w == m_securityAnswer) {

            validateField(m_securityAnswer, 4, m_securityAnswerFeedback, Index.getStrings().answer_tt());

        } else if (w == m_passwordRepeat) {

            validatePasswordRepeat();

        } else if (w == m_userDesc) {

            validateField(m_userDesc, 8, m_userDescFeedback, Index.getStrings().desc_tt());

        }



        enableSaveButton();

    }



    /**

     * Enable or disable the save button based on the state of the fields.

     */

    private void enableSaveButton()

    {

        /*

         * We only want to enable the save button if every field is valid

         */

        for (FormFeedback feedback : m_feedbacks) {

            if (feedback.getStatus() != FormFeedback.VALID) {

                m_save.setEnabled(false);

                return;

            }

        }



        m_save.setEnabled(true);

    }



    /**

     * Validate the second password field.

     */

    private void validatePasswordRepeat()

    {

        validateField(m_passwordRepeat, 2, m_passwordRepeatFeedback, Index.getStrings().pwdMatch());

        if (m_passwordRepeat.getText().equals(m_password.getText())) {

            m_passwordRepeatFeedback.setStatus(FormFeedback.VALID);

            m_passwordRepeatFeedback.setTitle("");

        } else {

            m_passwordRepeatFeedback.setStatus(FormFeedback.ERROR);

            m_passwordRepeatFeedback.setTitle(Index.getStrings().pwdMatch());

        }

    }



    /**

     * Validate that the email field is filled in with a valid email address.

     */

    private void validateEmail()

    {

        if (JSUtil.validateEmail(m_email.getText())) {

            m_emailFeedback.setStatus(FormFeedback.VALID);

            m_emailFeedback.setTitle("");

        } else {

            m_emailFeedback.setStatus(FormFeedback.ERROR);

            m_emailFeedback.setTitle(Index.getStrings().email_tt());

        }

    }



    /**

     * Validate that the birthday is filled in, a valid date, and occurs in the past.

     */

    private void validateBirthday()

    {

        if (m_bDay.getText().length() > 2) {

            if (m_bDay.getDateValue() != null) {

                if (m_bDay.getDateValue().after(new Date())) {

                    // user cannot be born tomorrow

                    m_bDayFeedback.setStatus(FormFeedback.ERROR);

                    m_bDayFeedback.setTitle(Index.getStrings().dateFuture_tt());

                } else {

                    m_bDayFeedback.setStatus(FormFeedback.VALID);

                    m_bDayFeedback.setTitle("");

                }

            } else {

                m_bDayFeedback.setStatus(FormFeedback.ERROR);

                m_bDayFeedback.setTitle(Index.getStrings().validDate_tt(m_bDay.getText()));

            }

        } else {

            m_bDayFeedback.setStatus(FormFeedback.WARNING);

            m_bDayFeedback.setTitle(Index.getStrings().birthday_tt());

        }

    }



    /**

     * Validate that the specified field is filled in and valid.

     * 

     * @param tb        the field to validate

     * @param minLength the minimum character length of the field

     * @param feedback  the feedback control for this field

     * @param error     the error to show in the feedback if the field isn't valid

     */

    private void validateField(TextBoxBase tb, int minLength, FormFeedback feedback, String error)

    {

        if (tb.getText().length() > minLength) {

            feedback.setStatus(FormFeedback.VALID);

            feedback.setTitle("");

        } else {

            feedback.setStatus(FormFeedback.WARNING);

            feedback.setTitle(error);

        }

    }

    

    private void save()

    {

        m_save.setInProgress(true);

        //a little timer to simulate time it takes to set loading back to false

        Timer t = new Timer() {



            @Override

            public void run()

            {

                m_save.setInProgress(false);

            }



        };

        t.schedule(2000);

        MessageUtil.showMessage(Index.getStrings().formSaveMessage());

    }

}