Package org.objectstyle.wolips.eomodeler.editors.dataType

Source Code of org.objectstyle.wolips.eomodeler.editors.dataType.DecimalNumberDataTypePanel

/*
* ====================================================================
*
* The ObjectStyle Group Software License, Version 1.0
*
* Copyright (c) 2006 The ObjectStyle Group and individual authors of the
* software. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* 3. The end-user documentation included with the redistribution, if any, must
* include the following acknowlegement: "This product includes software
* developed by the ObjectStyle Group (http://objectstyle.org/)." Alternately,
* this acknowlegement may appear in the software itself, if and wherever such
* third-party acknowlegements normally appear.
*
* 4. The names "ObjectStyle Group" and "Cayenne" must not be used to endorse or
* promote products derived from this software without prior written permission.
* For written permission, please contact andrus@objectstyle.org.
*
* 5. Products derived from this software may not be called "ObjectStyle" nor
* may "ObjectStyle" appear in their names without prior written permission of
* the ObjectStyle Group.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* OBJECTSTYLE GROUP OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many individuals on
* behalf of the ObjectStyle Group. For more information on the ObjectStyle
* Group, please see <http://objectstyle.org/>.
*/
package org.objectstyle.wolips.eomodeler.editors.dataType;

import org.eclipse.core.databinding.DataBindingContext;
import org.eclipse.core.databinding.beans.BeansObservables;
import org.eclipse.jface.databinding.swt.SWTObservables;
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Text;
import org.eclipse.ui.views.properties.tabbed.TabbedPropertySheetWidgetFactory;
import org.objectstyle.wolips.eomodeler.Messages;
import org.objectstyle.wolips.eomodeler.core.model.AbstractEOArgument;

public class DecimalNumberDataTypePanel extends Composite implements IDataTypePanel {
  private Text myPrecisionText;

  private Text myScaleText;

  private DataBindingContext myBindingContext;

  public DecimalNumberDataTypePanel(Composite _parent, int _style, TabbedPropertySheetWidgetFactory _widgetFactory) {
    super(_parent, _style);
    setBackground(_parent.getBackground());
    GridLayout layout = new GridLayout(2, false);
    layout.verticalSpacing = 10;
    layout.marginLeft = 7;
    layout.marginRight = 7;
    layout.marginBottom = 13;
    setLayout(layout);
    _widgetFactory.createCLabel(this, Messages.getString("AbstractEOArgument." + AbstractEOArgument.PRECISION), SWT.NONE);
    myPrecisionText = new Text(this, SWT.BORDER);
    GridData precisionFieldLayoutData = new GridData(GridData.FILL_HORIZONTAL);
    myPrecisionText.setLayoutData(precisionFieldLayoutData);

    _widgetFactory.createCLabel(this, Messages.getString("AbstractEOArgument." + AbstractEOArgument.SCALE), SWT.NONE);
    myScaleText = new Text(this, SWT.BORDER);
    GridData scaleFieldLayoutData = new GridData(GridData.FILL_HORIZONTAL);
    myScaleText.setLayoutData(scaleFieldLayoutData);
  }

  public void setArgument(AbstractEOArgument _argument) {
    if (myBindingContext != null) {
      myBindingContext.dispose();
    }
    if (_argument != null) {
      myBindingContext = new DataBindingContext();
      myBindingContext.bindValue(SWTObservables.observeText(myPrecisionText, SWT.Modify), BeansObservables.observeValue(_argument, AbstractEOArgument.PRECISION), null, null);
      myBindingContext.bindValue(SWTObservables.observeText(myScaleText, SWT.Modify), BeansObservables.observeValue(_argument, AbstractEOArgument.SCALE), null, null);
    }
  }

  public void dispose() {
    setArgument(null);
    super.dispose();
  }

}
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