/*
    * Copyright (C) 2003-2014 eXo Platform SAS.
    *
    * This is free software; you can redistribute it and/or modify it
    * under the terms of the GNU Lesser General Public License as
    * published by the Free Software Foundation; either version 3 of
    * the License, or (at your option) any later version.
    *
    * This software is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
   * Lesser General Public License for more details.
   *
   * You should have received a copy of the GNU Lesser General Public
   * License along with this software; if not, write to the Free
   * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
   * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
   */
  package org.exoplatform.ui.login;
  
  import org.exoplatform.R;
  import org.exoplatform.singleton.AccountSetting;
  
  import android.content.Context;
  import android.os.Bundle;
  import android.text.Editable;
  import android.text.TextWatcher;
  import android.util.AttributeSet;
  import android.view.View;
  import android.widget.Button;
  import android.widget.EditText;
  import android.widget.LinearLayout;
  
  /**
   * Represents the account panel in login screen that contains 2 edit input and a
   * login button
   */
  public class AccountPanel extends LinearLayout implements View.OnClickListener {
  
      private AccountSetting      mSetting;
  
      /** === Components === **/
      private EditText            mUserEditTxt;
  
      private EditText            mPassEditTxt;
  
      private Button              mLoginBtn;
  
      /** === Constants === **/
      public static final String  USERNAME = "USERNAME";
  
      public static final String  PASSWORD = "PASSWORD";
  
      private static final String TAG      = "eXo____AccountPanel____";
  
      public AccountPanel(Context context) {
          super(context);
      }
  
      public AccountPanel(Context context, AttributeSet attrs) {
          super(context, attrs);
      }
  
      @Override
      protected void onFinishInflate() {
          super.onFinishInflate();
  
          mSetting = AccountSetting.getInstance();
  
          initSubViews();
      }
  
      private void initSubViews() {
          mUserEditTxt = (EditText) findViewById(R.id.EditText_UserName);
          mPassEditTxt = (EditText) findViewById(R.id.EditText_Password);
          mUserEditTxt.addTextChangedListener(mOnEditCredentials);
          mPassEditTxt.addTextChangedListener(mOnEditCredentials);
  
          mLoginBtn = (Button) findViewById(R.id.Button_Login);
          mLoginBtn.setOnClickListener(this);
      }
  
      /**
       * Make this panel visible
       */
      public void turnOn() {
          setVisibility(View.VISIBLE);
  
          if (mSetting.getCurrentAccount() != null) {
              // if a server is selected
              // 1) set username if remember me is enabled otherwise set nothing
              mUserEditTxt.setText(mSetting.isRememberMeEnabled()
                      && !mSetting.getUsername().isEmpty() ? mSetting.getUsername() : "");
              // 2) set password if remember me is enabled otherwise set nothing
              mPassEditTxt.setText(mSetting.isRememberMeEnabled()
                      && !mSetting.getPassword().isEmpty() ? mSetting.getPassword() : "");
              // 3) append the server name to the login button label
              String to = getResources().getString(R.string.SignInButton_In);
              String connect = getResources().getString(R.string.SignInButton);
             String loginButtonLabel = connect + " " + to + " " + mSetting.getServerName();
             mLoginBtn.setText(loginButtonLabel);
         }
 
         changeStateOfLoginBtn();
     }
 
     /**
      * Make this panel invisible
      */
     public void turnOff() {
         setVisibility(View.INVISIBLE);
     }
 
     public void onSaveState(Bundle saveState) {
         saveState.putString(USERNAME, mUserEditTxt.getText().toString());
         saveState.putString(PASSWORD, mPassEditTxt.getText().toString());
     }
 
     public void onRestoreState(Bundle saveState) {
         mUserEditTxt.setText(saveState.getString(USERNAME));
         mPassEditTxt.setText(saveState.getString(PASSWORD));
     }
 
     public void onChangeLanguage() {
         mUserEditTxt.setHint(getResources().getString(R.string.UserNameCellTitle));
         mPassEditTxt.setHint(getResources().getString(R.string.PasswordCellTitle));
         mLoginBtn.setText(getResources().getString(R.string.SignInButton));
     }
 
     /**
      * Listens for login click Forward click event to controller
      * 
      * @param view
      */
     @Override
     public void onClick(View view) {
 
         if (view.equals(mLoginBtn)) {
             mViewListener.onClickLogin(mUserEditTxt.getText().toString(), mPassEditTxt.getText()
                                                                                       .toString());
         }
 
     }
 
     private void changeStateOfLoginBtn() {
         boolean isCredentialsEntered = !mUserEditTxt.getText().toString().isEmpty()
                 && !mPassEditTxt.getText().toString().isEmpty();
         mLoginBtn.setEnabled(isCredentialsEntered);
     }
 
     private TextWatcher  mOnEditCredentials = new TextWatcher() {
                                                 public void beforeTextChanged(CharSequence s,
                                                                               int start,
                                                                               int count,
                                                                               int after) {
                                                 }
 
                                                 public void afterTextChanged(Editable s) {
                                                 }
 
                                                 @Override
                                                 public void onTextChanged(CharSequence s,
                                                                           int start,
                                                                           int before,
                                                                           int count) {
                                                     changeStateOfLoginBtn();
                                                 }
 
                                             };
 
     private ViewListener mViewListener;
 
     /* interface to listen to view event */
     public interface ViewListener {
 
         void onClickLogin(String username, String password);
     }
 
     public void setViewListener(ViewListener l) {
         mViewListener = l;
     }
 }