Subversion Repositories eFlore/Archives.cel-v1

/*

 * Copyright 2006 Google Inc.

 *

 * 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.tela_botanica.client;

import com.google.gwt.json.client.JSONArray;

import com.google.gwt.json.client.JSONBoolean;

import com.google.gwt.json.client.JSONParser;

import com.google.gwt.json.client.JSONString;

import com.google.gwt.json.client.JSONValue;

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

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

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

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

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

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

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

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

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

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

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

public class LoginDialog extends DialogBox {

  Mediator mediator=null;

  private String serviceBaseUrl = null;

  private TextBox login = new TextBox();

  private PasswordTextBox  password = new PasswordTextBox();

  private String user=null;

  public LoginDialog(final Mediator med) {

    setText("Connexion");

    mediator=med;

    mediator.registerLoginDialog(this);

    user=mediator.getUser();

    serviceBaseUrl = mediator.getServiceBaseUrl();

    VerticalPanel outer = new VerticalPanel();

    Grid inner = new Grid(3,2);

    HTML textLogin = new HTML("E-mail:");

    HTML textPassword = new HTML("Mot de passe:");

	HTML okButton=new HTML("Ok");

	okButton.setStyleName("html_button");

	okButton.addClickListener(

	    	new ClickListener() {

	    		public void onClick(Widget sender) {

					  loginFromService(login.getText(),password.getText());

			        hide();

	    		}

	     	}

	);

	HTML cancelButton=new HTML("Annuler");

	cancelButton.setStyleName("html_button");

	cancelButton.addClickListener(

	    	new ClickListener() {

	    		public void onClick(Widget sender) {

					        hide();

	    		}

	     	}

	);

	  login.addKeyboardListener( new KeyboardListener() {

		  public void onKeyDown(Widget arg0, char arg1, int arg2) {

			  if(arg1 == KEY_ENTER)

			    {

				  loginFromService(login.getText(),password.getText());

			        hide();

			    }

		  }

		  public void onKeyUp(Widget arg0, char arg1, int arg2) {

		  }

		  public void onKeyPress(Widget arg0, char arg1, int arg2) {

		  }

		  }

  );

	  password.addKeyboardListener( new KeyboardListener() {

		  public void onKeyDown(Widget arg0, char arg1, int arg2) {

			  if(arg1 == KEY_ENTER)

			    {

				  loginFromService(login.getText(),password.getText());

			        hide();

			    }

		  }

		  public void onKeyUp(Widget arg0, char arg1, int arg2) {

		  }

		  public void onKeyPress(Widget arg0, char arg1, int arg2) {

		  }

		  }

  );

	  inner.setWidget(0,0,textLogin);

	  inner.setWidget(0,1,login);

	  inner.setWidget(1,0,textPassword);

	  inner.setWidget(1,1,password);

	  inner.setWidget(2,0,okButton);

	  inner.setWidget(2,1,cancelButton);

	  inner.setCellPadding(10);

	  outer.add(inner);

	 setWidget(outer);

  }

	/**

	 *

	 */

	private void loginFromService(String login, String password) {

		HTTPRequest.asyncGet(serviceBaseUrl + "/User/" + login + "/" + password ,

				new ResponseTextHandler() {

					public void onCompletion(String str) {

						JSONValue jsonValue = JSONParser.parse(str);

						JSONArray jsonArray;

						if ((jsonArray = jsonValue.isArray()) != null) {

								user = ((JSONString) jsonArray.get(0)).stringValue();

								mediator.setConnected(((JSONBoolean) jsonArray.get(1)).booleanValue());

						}

						if (mediator.getConnected()) {

							mediator.onLogin(user);

						}

					}

				});

	}

  public boolean onKeyDownPreview(char key, int modifiers) {

	    // Use the popup's key preview hooks to close the dialog when either

	    //  escape is pressed.

	    switch (key) {

	      case KeyboardListener.KEY_ESCAPE:

	        hide();

	        break;

	    }

	    return true;

  }

}