/**

 * 

 */

package com.digsarustudio.saru.erp.musaceae.client.widget.composite.login;



import com.digsarustudio.saru.erp.musaceae.client.mvp.presenter.Presenter;

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

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

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

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

import com.google.gwt.resources.client.CssResource;

import com.google.gwt.uibinder.client.UiBinder;

import com.google.gwt.uibinder.client.UiField;

import com.google.gwt.uibinder.client.UiHandler;

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

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

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

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

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

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



/**

 * The user login Dialog

 *

 * @author		Otto Hung <digsarustudio@gmail.com>

 * @since		1.0.3

 * @version		1.0.10

 * <br>

 * Note:<br>

 * 				1.0.10	->	Bug Fixing: fail to reset password.<br>

 *

 */

public class LoginDialogView extends DialogBox implements LoginDialogPresenter.Display{

	private final String WRONG_USERNAME_PASSWORD = "User name and password do not match. Please ensure the lowercase or uppercase of characters are right.";

	

	private static LoginDialogUiBinder uiBinder = GWT.create(LoginDialogUiBinder.class);



	interface LoginDialogUiBinder extends UiBinder<Widget, LoginDialogView> {

	}

	

	interface Styling extends CssResource{

		

	}



	@UiField Styling			style;

	@UiField TextBox			userName;

	@UiField PasswordTextBox	password;

	@UiField PushButton			loginBtn;

	@UiField PushButton			resetPwdBtn;

	@UiField PushButton			forgotPwdBtn;

	@UiField Label				hint;

	

	private LoginDialogPresenter presenter = null;

	

	/**

	 * Because this class has a default constructor, it can

	 * be used as a binder template. In other words, it can be used in other

	 * *.ui.xml files as follows:

	 * <ui:UiBinder xmlns:ui="urn:ui:com.google.gwt.uibinder"

	  *   xmlns:g="urn:import:**user's package**">

	 *  <g:**UserClassName**>Hello!</g:**UserClassName>

	 * </ui:UiBinder>

	 * Note that depending on the widget that is used, it may be necessary to

	 * implement HasHTML instead of HasText.

	 */

	public LoginDialogView() {

		setWidget(uiBinder.createAndBindUi(this));

		

		this.init();

	}



	@UiHandler("loginBtn")

	protected void onLoginClickEvent(ClickEvent event) {

		this.onLogin(this.userName.getText(), this.password.getText());

	}

	

	@UiHandler("password")

	protected void onButtonKeyDownClickEvent(KeyDownEvent event) {

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

			return;

		}

		

		this.onLogin(this.getUserName(), this.getPassword());

	}	

	

	@UiHandler("cancelBtn")

	protected void onLoginCancelClickEvent(ClickEvent event) {

		this.hide();

		this.presenter.onCancel();

	}

	

	@UiHandler("resetPwdBtn")

	protected void onResetPasswordClickEvent(ClickEvent event) {

		this.hide();

		this.presenter.onResetPassword(this.getUserName());

	}

	

	@UiHandler("forgotPwdBtn")

	protected void onForgotPasswordClickEvent(ClickEvent event) {

		this.hide();

		

		/**

		 * @since 1.0.10

		 */

		this.presenter.onForgotPassword(this.getUserName());

	}

	

	private Boolean isValidUserName(String userName){

		return true;

	}

	

	private Boolean isValidPassword(String password){

		return true;

	}

	

	private void onLogin(String userName, String password){

		if( !this.isValidUserName(this.userName.getText()) ){

			this.setHint(this.WRONG_USERNAME_PASSWORD);

			this.showHint();

			return;

		}

		

		if( !this.isValidPassword(this.password.getText()) ){

			this.setHint(this.WRONG_USERNAME_PASSWORD);

			this.showHint();

			return;

		}

		

		this.presenter.onLogin(this.userName.getText(), this.password.getText());

	}

	

	private void showHint(){

		this.hint.setVisible(true);

	}

	

	public void setHint(String hint){

		this.hint.setText(hint);		

	}



	/* (non-Javadoc)

	 * @see com.digsarustudio.musa.widget.composite.LoginPresenter.Display#clear()

	 */

	@Override

	public void clear() {

		this.userName.setText("");

		this.password.setText("");

		

		this.hint.setText("");

		

		this.resetButtonState();

	}



	/* (non-Javadoc)

	 * @see com.digsarustudio.musa.widget.composite.LoginPresenter.Display#reset()

	 */

	@Override

	public void reset() {

		this.userName.setText("");

		this.password.setText("");

		

		this.hint.setText("");

		

		this.resetButtonState();

	}



	/* (non-Javadoc)

	 * @see com.digsarustudio.musa.widget.composite.LoginPresenter.Display#onFailToLogin(java.lang.String)

	 */

	@Override

	public void onFailToLogin(String message) {

		this.setHint(message);

		this.hint.setVisible(true);

	}



	/* (non-Javadoc)

	 * 

	 */

	@Override

	public void setPresenter(Presenter presenter) {

		this.presenter =(LoginDialogPresenter)presenter;

	}	



	/* (non-Javadoc)

	 * @see com.digsarustudio.musa.widget.composite.LoginDialogPresenter.Display#showDialog()

	 */

	@Override

	public void showDialog() {

		this.clear();

		this.center();

		this.show();		

	}



	/* (non-Javadoc)

	 * @see com.digsarustudio.musa.widget.composite.LoginDialogPresenter.Display#hideDialog()

	 */

	@Override

	public void hideDialog() {

		this.hide();

	}

	

	/* (non-Javadoc)

	 * @see com.digsarustudio.musa.widget.composite.login.LoginDialogPresenter.Display#showResetPasswordBtn()

	 */

	@Override

	public void showResetPasswordBtn() {

		this.resetPwdBtn.setVisible(true);

		this.resetPwdBtn.setFocus(true);

	}



	/* (non-Javadoc)

	 * @see com.digsarustudio.musa.widget.composite.login.LoginDialogPresenter.Display#hideResetPasswordBtn()

	 */

	@Override

	public void hideResetPasswordBtn() {

		this.resetPwdBtn.setVisible(false);

	}



	/* (non-Javadoc)

	 * @see com.digsarustudio.musa.widget.composite.login.LoginDialogPresenter.Display#showForgotPasswordBtn()

	 */

	@Override

	public void showForgotPasswordBtn() {

		this.forgotPwdBtn.setVisible(true);

		

	}



	/* (non-Javadoc)

	 * @see com.digsarustudio.musa.widget.composite.login.LoginDialogPresenter.Display#hideForgotPasswordBtn()

	 */

	@Override

	public void hideForgotPasswordBtn() {

		this.forgotPwdBtn.setVisible(false);

		

	}



	/* (non-Javadoc)

	 * @see com.digsarustudio.musa.widget.composite.login.LoginDialogPresenter.Display#getUserName()

	 */

	@Override

	public String getUserName() {

		String name = this.userName.getText().trim();

		

		return name;

	}



	/* (non-Javadoc)

	 * @see com.digsarustudio.musa.widget.composite.login.LoginDialogPresenter.Display#getPassword()

	 */

	@Override

	public String getPassword() {

		String pwd = this.password.getText().trim();

		

		return pwd;

	}



	/* (non-Javadoc)

	 * @see com.digsarustudio.musa.widget.composite.login.LoginDialogPresenter.Display#setIsPasswordExpired()

	 */

	@Override

	public void setIsPasswordExpired() {

		this.resetButtonState();

		

		this.showResetPasswordBtn();

		

	}



	/* (non-Javadoc)

	 * @see com.digsarustudio.musa.widget.composite.login.LoginDialogPresenter.Display#setIsWrongPassword()

	 */

	@Override

	public void setIsWrongPassword() {

		this.resetButtonState();

		this.showForgotPasswordBtn();

	}



	private void init(){

		this.setAnimationEnabled(false);

		

		this.setText("Login");

		

		this.resetButtonState();

	}

	

	private void resetButtonState() {

		this.hideResetPasswordBtn();

		this.hideForgotPasswordBtn();

	}

}