PromptDialogBox.java

/*!
 * This program is free software; you can redistribute it and/or modify it under the
 * terms of the GNU Lesser General Public License, version 2.1 as published by the Free Software
 * Foundation.
 *
 * You should have received a copy of the GNU Lesser General Public License along with this
 * program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
 * or from the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * 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 Lesser General Public License for more details.
 *
 * Copyright (c) 2002-2013 Pentaho Corporation..  All rights reserved.
 */

package org.pentaho.gwt.widgets.client.dialogs;

import com.google.gwt.user.client.DOM;
import com.google.gwt.user.client.ui.Button;
import com.google.gwt.user.client.ui.ClickListener;
import com.google.gwt.user.client.ui.FlexTable;
import com.google.gwt.user.client.ui.FocusWidget;
import com.google.gwt.user.client.ui.HasHorizontalAlignment;
import com.google.gwt.user.client.ui.HasVerticalAlignment;
import com.google.gwt.user.client.ui.HorizontalPanel;
import com.google.gwt.user.client.ui.KeyboardListener;
import com.google.gwt.user.client.ui.Widget;

@SuppressWarnings( "deprecation" )
public class PromptDialogBox extends DialogBox {

  IDialogCallback callback;
  IDialogValidatorCallback validatorCallback;
  Widget content;
  final FlexTable dialogContent = new FlexTable();
  protected Button okButton = null;
  protected Button notOkButton = null;
  protected Button cancelButton = null;

  public PromptDialogBox( String title, String okText, String notOkText, String cancelText, boolean autoHide,
      boolean modal ) {
    super( autoHide, modal );
    setText( title );
    okButton = new Button( okText );
    okButton.setStylePrimaryName( "pentaho-button" );
    okButton.getElement().setAttribute( "id", "okButton" ); //$NON-NLS-1$ //$NON-NLS-2$
    okButton.addClickListener( new ClickListener() {
      public void onClick( Widget sender ) {
        onOk();
      }
    } );

    final HorizontalPanel dialogButtonPanel = new HorizontalPanel();
    dialogButtonPanel.setSpacing( 0 );
    dialogButtonPanel.add( okButton );

    if ( notOkText != null ) {
      notOkButton = new Button( notOkText );
      notOkButton.setStylePrimaryName( "pentaho-button" );
      notOkButton.getElement().setAttribute( "id", "notOkButton" ); //$NON-NLS-1$ //$NON-NLS-2$
      notOkButton.addClickListener( new ClickListener() {
        public void onClick( Widget sender ) {
          onNotOk();
        }
      } );
      dialogButtonPanel.add( notOkButton );
    }

    if ( cancelText != null ) {
      cancelButton = new Button( cancelText );
      cancelButton.setStylePrimaryName( "pentaho-button" );
      cancelButton.getElement().setAttribute( "id", "cancelButton" ); //$NON-NLS-1$ //$NON-NLS-2$
      cancelButton.addClickListener( new ClickListener() {
        public void onClick( Widget sender ) {
          onCancel();
        }
      } );
      dialogButtonPanel.add( cancelButton );
    }
    HorizontalPanel dialogButtonPanelWrapper = new HorizontalPanel();
    if ( okText != null && cancelText != null ) {
      dialogButtonPanelWrapper.setHorizontalAlignment( HasHorizontalAlignment.ALIGN_RIGHT );
    } else {
      dialogButtonPanelWrapper.setHorizontalAlignment( HasHorizontalAlignment.ALIGN_CENTER );
    }
    dialogButtonPanelWrapper.setStyleName( "button-panel" ); //$NON-NLS-1$
    dialogButtonPanelWrapper.setWidth( "100%" ); //$NON-NLS-1$
    dialogButtonPanelWrapper.add( dialogButtonPanel );

    if ( content instanceof FocusWidget ) {
      setFocusWidget( (FocusWidget) content );
    }
    dialogContent.setCellPadding( 0 );
    dialogContent.setCellSpacing( 0 );
    // add button panel
    dialogContent.setWidget( 1, 0, dialogButtonPanelWrapper );
    dialogContent.getCellFormatter().setVerticalAlignment( 1, 0, HasVerticalAlignment.ALIGN_BOTTOM );
    // dialogContent.getFlexCellFormatter().setColSpan(2, 0, 2);
    dialogContent.setWidth( "100%" ); //$NON-NLS-1$
    setWidget( dialogContent );
  }

  public PromptDialogBox( String title, String okText, String notOkText, String cancelText, boolean autoHide,
      boolean modal, Widget content ) {
    this( title, okText, notOkText, cancelText, autoHide, modal );
    setContent( content );
  }

  public PromptDialogBox( String title, String okText, String cancelText, boolean autoHide, boolean modal ) {
    this( title, okText, null, cancelText, autoHide, modal );
  }

  public PromptDialogBox( String title, String okText, String cancelText, boolean autoHide, boolean modal,
      Widget content ) {

    this( title, okText, cancelText, autoHide, modal );
    setContent( content );
  }

  public boolean onKeyDownPreview( char key, int modifiers ) {
    // Use the popup's key preview hooks to close the dialog when either
    // enter or escape is pressed.
    switch ( key ) {
      case KeyboardListener.KEY_ENTER:
        onOk();
        break;
      case KeyboardListener.KEY_ESCAPE:
        onCancel();
        break;
    }
    return true;
  }

  public IDialogCallback getCallback() {
    return callback;
  }

  public void setContent( Widget content ) {
    this.content = content;
    if ( content != null ) {
      dialogContent.getFlexCellFormatter().setVerticalAlignment( 0, 0, HasVerticalAlignment.ALIGN_MIDDLE );
      dialogContent.getFlexCellFormatter().setHorizontalAlignment( 0, 0, HasHorizontalAlignment.ALIGN_CENTER );
      dialogContent.setWidget( 0, 0, content );
      dialogContent.getCellFormatter().setStyleName( 0, 0, "dialog-content" );
      DOM.setStyleAttribute( dialogContent.getCellFormatter().getElement( 0, 0 ), "padding", "5px 10px 10px 10px" ); //$NON-NLS-1$ //$NON-NLS-2$
      content.setHeight( "100%" ); //$NON-NLS-1$
      content.setWidth( "100%" ); //$NON-NLS-1$
    }
  }

  public Widget getContent() {
    return content;
  }

  public void setCallback( IDialogCallback callback ) {
    this.callback = callback;
  }

  public IDialogValidatorCallback getValidatorCallback() {
    return validatorCallback;
  }

  public void setValidatorCallback( IDialogValidatorCallback validatorCallback ) {
    this.validatorCallback = validatorCallback;
  }

  protected void onOk() {
    if ( validatorCallback == null || ( validatorCallback != null && validatorCallback.validate() ) ) {
      try {
        if ( callback != null ) {
          callback.okPressed();
        }
      } catch ( Throwable dontCare ) {
        //ignore
      }
      hide();
    }
  }

  protected void onNotOk() {
    try {
      if ( callback instanceof IThreeButtonDialogCallback ) {
        ( (IThreeButtonDialogCallback) callback ).notOkPressed();
      }
    } catch ( Throwable dontCare ) {
      //ignore
    }
    hide();
  }

  protected void onCancel() {
    try {
      if ( callback != null ) {
        callback.cancelPressed();
      }
    } catch ( Throwable dontCare ) {
      //ignore
    }
    hide();
  }

}