AddEditOsUserWidget.java

/*
** Module   : OsUserDefinition.java
** Abstract : OsUserDefinition is a view and controller delegate to add and to edit OS user accounts.
**
** Copyright (c) 2023, Golden Code Development Corporation.
**
** -#- -I- --Date-- ----------------Description----------------------
** 001 GBB 20230807 Created initial version.
*/
/*
** This program is free software: you can redistribute it and/or modify
** it under the terms of the GNU Affero General Public License as
** published by the Free Software Foundation, either version 3 of the
** License, or (at your option) any later version.
**
** This program 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 Affero General Public License for more details.
**
** You may find a copy of the GNU Affero GPL version 3 at the following
** location: https://www.gnu.org/licenses/agpl-3.0.en.html
** 
** Additional terms under GNU Affero GPL version 3 section 7:
** 
**   Under Section 7 of the GNU Affero GPL version 3, the following additional
**   terms apply to the works covered under the License.  These additional terms
**   are non-permissive additional terms allowed under Section 7 of the GNU
**   Affero GPL version 3 and may not be removed by you.
** 
**   0. Attribution Requirement.
** 
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**     work or Appropriate Legal Notices displayed by works containing the covered
**     work.  You may not remove from the covered work any author or developer
**     credit already included within the covered work.
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*/
package com.goldencode.p2j.admin.client.application.home.accounts.osusers;

import com.goldencode.p2j.admin.*;
import com.goldencode.p2j.admin.client.application.home.accounts.*;
import com.goldencode.p2j.admin.client.widget.*;
import com.goldencode.p2j.admin.client.widget.dialog.*;
import com.goldencode.p2j.admin.client.widget.dialog.InputDialog.*;
import com.google.gwt.user.client.ui.*;
import com.google.inject.*;
import org.gwtbootstrap3.client.ui.form.validator.*;

import java.util.*;
import java.util.function.*;

/**
 * Implements the add and edit OS user accounts use cases.
 */
public class AddEditOsUserWidget
extends Composite
{
   /** The common input dialogs provider */
   private final Provider<InputDialog> inputDialogProvider;

   /** The edit boolean flag which true value indicates the edit use case.*/
   private boolean edit;

   /** The common input dialog */
   private InputDialog inputDialog;
   
   /** The account name field */
   private Field acctName;

   /** The account description field */
   private Field description;
   
   /** The account disabled field */
   private Field acctDisabled;

   /** The account security options field */
   private Field secSelect;

   /** The new password field */
   private Field password;

   /** The confirmed password field */
   private Field password2;

   /**
    * Creates the User Account Definition delegate.
    * 
    * @param    inputDialogProvider
    *           The injected common input dialogs provider
    */
   @Inject
   public AddEditOsUserWidget(Provider<InputDialog> inputDialogProvider)
   {
      this.inputDialogProvider = inputDialogProvider;
   }

   /**
    * Builds the dialog's fields of the OS User Account Definition View.
    * 
    * @param    uDef
    *           The given OS user account definition
    * @param    doneHandler
    *           The completion consumer 
    */
   public void build(OsUserDef uDef, Consumer<Boolean> doneHandler)
   {
      edit = uDef != null;
      inputDialog = inputDialogProvider.get();
      buildStandardFields(uDef, items ->
      {
         if (items != null)
         {
            inputDialog.setLabelSize(3);
            Item[] itemsArray = items.toArray(new Item[0]);
            buildStep2(uDef, itemsArray, doneHandler);
         }
         else
         {
            doneHandler.accept(false);
         }
      });
   }

   /**
    * Shows the User Definition View dialog.
    * 
    * @param    parent
    *           The parent container for the User Definition View dialog
    * @param    uDef
    *           The OS user account definition
    * @param    doneHandler
    *           The consumer of the OS user account model
    */
   public void show(HasWidgets parent, OsUserDef uDef, Consumer<OsUserDef> doneHandler)
   {
      inputDialog.show(parent, false, values ->
      {
         if (values == null)
         {
            inputDialog.dismiss();
            doneHandler.accept(null);
            return;
         }

         saveUIData(uDef, values);
         inputDialog.dismiss();
         doneHandler.accept(uDef);
      });
   }

   /**
    * Builds the extended OS user account fields.
    * 
    * @param    uDef
    *           The given OS user account definition
    * @param    items
    *           The standard OS user account fields
    * @param    doneHandler
    *           The completion consumer 
    */
   private void buildStep2(OsUserDef uDef, Item[] items, Consumer<Boolean> doneHandler)
   {
      inputDialog.build("OS User Account Definition", items);

      if (edit)
      {
         EnumRadioGroup secSel = (EnumRadioGroup) inputDialog.getWidget(secSelect);
         secSel.setEnabled(SecuritySelectorOptions.LEAVE_PASSWORD_UNCHANGED, false);
      }

      HasEnabled nameW = (HasEnabled) inputDialog.getWidget(acctName);
      nameW.setEnabled(!edit);

      updateUIState();
      bindHandlers();
      doneHandler.accept(true);
   }

   /**
    * Builds the standard dialog's fields for the given OS user account definition.
    * 
    * @param    uDef
    *           The given OS user account definition
    * @param    doneHandler
    *           The consumer of the dialog's fields
    */
   private void buildStandardFields(OsUserDef uDef, Consumer<ArrayList<Item>> doneHandler)
   {
      ArrayList<Item> res = new ArrayList<>(20);
      acctName = new Field("Account Name", uDef == null ? "" : uDef.subjectId);
      description = new Field("Description",
                              uDef == null || uDef.description == null ? "" : uDef.description,
                              true);
      res.add(new Span(acctName, description));

      acctDisabled = new Field("Account is Disabled", uDef == null ? false : !uDef.enabled);
      res.add(acctDisabled);
      
      secSelect = new Field(null, uDef == null ?
         SecuritySelectorOptions.ENTER_PASSWORD :
         SecuritySelectorOptions.LEAVE_PASSWORD_UNCHANGED);
      res.add(secSelect);

      password = new Field("Password", "").password(true);

      String msg = "Password values must match";
      AbstractValidator<String> pswdVal = new AbstractValidator<String>(msg)
      {
         @Override
         public int getPriority()
         {
            return 999;
         }

         @Override
         public boolean isValid(String value)
         {
            HasValue<String> pwd = inputDialog.getWidget(password);
            String val1 = pwd.getValue();
            if (val1 == null)
            {
               val1 = "";
            }

            return !((HasEnabled) pwd).isEnabled() || val1.equals(value);
         }
      };

      password2 = new Field("Confirm Password", "", false, pswdVal).password(true);
      Span pswdSpan = new Span(password, password2);
      res.add(pswdSpan);

      doneHandler.accept(res);
   }

   /** Attaches the dialog's input handlers */
   private void bindHandlers()
   {
      HasValue<SecuritySelectorOptions> wSec = inputDialog.getWidget(secSelect);
      wSec.addValueChangeHandler(event -> updateUIState());
   }

  /**
   * Saves the user's input data into the target user account definition.
   *  
   * @param    target
   *           The target user account definition
   * @param    values
   *           The map of the dialog's fields to their values
   */
   private void saveUIData(OsUserDef target, Map<Field, Object> values)
   {
      target.subjectId = (String) values.get(acctName);
      target.description = (String) values.get(description);
      target.enabled = !(boolean) values.get(acctDisabled);
      SecuritySelectorOptions selectedSec = (SecuritySelectorOptions) values.get(secSelect);
      target.protect = SecuritySelectorOptions.NO_PASSWORD_PROTECTION != selectedSec;
      if (selectedSec == SecuritySelectorOptions.ENTER_PASSWORD)
      {
         target.plainPassword = (String) values.get(password);
      }
   }

   /**
    * Updates the input fields states depending on the custom authentication plugin input and
    * the selected password option.
    */
   private void updateUIState()
   {
      HasValue<SecuritySelectorOptions> wSec = inputDialog.getWidget(secSelect);
      HasEnabled wPassword = (HasEnabled) inputDialog.getWidget(password);
      HasEnabled wPassword2 = (HasEnabled) inputDialog.getWidget(password2);

      switch (wSec.getValue())
      {
         case ENTER_PASSWORD:
            wPassword.setEnabled(true);
            wPassword2.setEnabled(true);
            break;
         case LEAVE_PASSWORD_UNCHANGED:
         case NO_PASSWORD_PROTECTION:
            wPassword.setEnabled(false);
            wPassword2.setEnabled(false);
            break;
      }
   }
}