# MessageDialogView.java

    /*
    ** Module   : MessageDialogView.java
    ** Abstract : Message modal dialog.
    **
    ** Copyright (c) 2017, Golden Code Development Corporation.
    **
    ** -#- -I- --Date-- --------------------------------Description-----------------------------------
    ** 001 HC  20170612 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.
    **
    **     You must preserve all legal notices or author attributions in the covered
    **     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.
    **
    **   1. No License To Use Trademarks.
    **
    **     This license does not grant any license or rights to use the trademarks
    **     Golden Code, FWD, any Golden Code or FWD logo, or any other trademarks
    **     of Golden Code Development Corporation. You are not authorized to use the
    **     name Golden Code, FWD, or the names of any author or contributor, for
    **     publicity purposes without written authorization.
    **
    **   2. No Misrepresentation of Affiliation.
    **
    **     You may not represent yourself as Golden Code Development Corporation or FWD.
    **
    **     You may not represent yourself for publicity purposes as associated with
    **     Golden Code Development Corporation, FWD, or any author or contributor to
    **     the covered work, without written authorization.
    **
    **   3. No Misrepresentation of Source or Origin.
    **
    **     You may not represent the covered work as solely your work.  All modified
    **     versions of the covered work must be marked in a reasonable way to make it
    **     clear that the modified work is not originating from Golden Code Development
    **     Corporation or FWD.  All modified versions must contain the notices of
    **     attribution required in this license.
    */

    package com.goldencode.p2j.admin.client.widget.dialog;

    import com.google.gwt.dom.client.*;
    import com.google.gwt.uibinder.client.*;
    import com.google.gwt.user.client.ui.*;
    import com.google.inject.*;
    import com.google.web.bindery.event.shared.*;
    import com.gwtplatform.mvp.client.*;
    import org.gwtbootstrap3.client.ui.Button;
    import org.gwtbootstrap3.client.ui.*;
    import org.gwtbootstrap3.client.ui.constants.*;
    import org.gwtbootstrap3.client.ui.html.*;

    import java.util.function.*;

    /**
     * Message modal dialog.
     */
    public class MessageDialogView
    extends ViewImpl
    implements MessageDialogPresenter.MyView
    {
       /**
        * GWT binder.
        */
       interface Binder
       extends UiBinder<Modal, MessageDialogView>
       {
       }

       /** The modal window */
       @UiField
       Modal modal;

       /** The icon displayed in the dialog */
       @UiField
       Icon icon;

       /** The modal title */
       @UiField
       Span title;

       /** Dialog message */
       @UiField
       HTML bodyMessage;

       /** Modal footer */
       @UiField
       ModalFooter modalFooter;

       /** Modal dialog dismiss event registration */
       private HandlerRegistration hideHandlerReg;

       /**
        * Ctor.
        *
        * @param   binder
        *          GWT binder.
        */
       @Inject
       MessageDialogView(MessageDialogView.Binder binder)
       {
          initWidget(binder.createAndBindUi(this));
       }

       /**
        * Called when the view is about to be revealed.
        */
       @Override
       public void onReveal()
       {
       }

       /**
        * Shows the message dialog.
        *
        * @param   title
        *          Dialog title.
        * @param   message
        *          Message dialog message.
        * @param   icon
        *          Message dialog icon.
        * @param   buttonLabels
        *          Button labels.
        * @param   buttonTypes
        *          Button types.
        * @param   closeCallback
        *          Close callback.
        */
       @Override
       public void show(String title,
                        String message,
                        IconType icon,
                        String[] buttonLabels,
                        ButtonType[] buttonTypes,
                        Consumer<Integer> closeCallback)
       {
          if (buttonLabels.length != buttonTypes.length)
          {
             throw new RuntimeException("Button label array length must be equal to button types array!");
          }

          if (icon == null)
          {
             this.icon.setVisible(false);
          }
          else
          {
             this.icon.setVisible(true);
             this.icon.setType(icon);
             this.icon.setSize(IconSize.TIMES2);
          }
          this.title.setHTML(title);
          bodyMessage.setHTML(message);
          modalFooter.clear();

          boolean activeModal = Document.get().getBody().hasClassName("modal-open");

          for (int i = 0; i < buttonLabels.length; i++)
          {
             String l = buttonLabels[i];
             ButtonType t = buttonTypes[i];
             Button b = new Button();
             b.setText(l);
             b.setType(t);
             modalFooter.add(b);
             int buttonIndex = i;
             b.addClickHandler(event ->
             {
                if (closeCallback != null)
                {
                   hideHandlerReg = modal.addHiddenHandler(evt ->
                   {
                      hideHandlerReg.removeHandler();

                      if (activeModal)
                      {
                         // when stack of modals are displayed the modal-open style must be restored
                         // so that the modal under this one has the correct appearance (for example
                         // the scroll bars are displayed and the modal can be scrolled when larger
                         // than the visible area)
                         Document.get().getBody().addClassName("modal-open");
                      }

                      closeCallback.accept(buttonIndex);
                   });
                }
                modal.hide();
             });
          }

          modal.show();
       }
    }