Package org.objectstyle.wolips.eomodeler.editors.entity

Source Code of org.objectstyle.wolips.eomodeler.editors.entity.EOEntitySharedObjectsEditorSection$ShareFetchSpecsListener

/*
* ====================================================================
*
* 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/>.
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package org.objectstyle.wolips.eomodeler.editors.entity;

import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;

import org.eclipse.core.databinding.DataBindingContext;
import org.eclipse.jface.viewers.CellEditor;
import org.eclipse.jface.viewers.CheckboxCellEditor;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.TableViewer;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.events.SelectionListener;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.TableColumn;
import org.eclipse.ui.IWorkbenchPart;
import org.eclipse.ui.views.properties.tabbed.AbstractPropertySection;
import org.eclipse.ui.views.properties.tabbed.TabbedPropertySheetPage;
import org.objectstyle.wolips.baseforplugins.util.ComparisonUtils;
import org.objectstyle.wolips.baseforuiplugins.utils.ErrorUtils;
import org.objectstyle.wolips.eomodeler.Activator;
import org.objectstyle.wolips.eomodeler.Messages;
import org.objectstyle.wolips.eomodeler.core.model.DuplicateFetchSpecNameException;
import org.objectstyle.wolips.eomodeler.core.model.EOEntity;
import org.objectstyle.wolips.eomodeler.core.model.EOFetchSpecification;
import org.objectstyle.wolips.eomodeler.utils.FormUtils;
import org.objectstyle.wolips.eomodeler.utils.TablePropertyCellModifier;
import org.objectstyle.wolips.eomodeler.utils.TablePropertyViewerSorter;
import org.objectstyle.wolips.eomodeler.utils.TableUtils;

public class EOEntitySharedObjectsEditorSection extends AbstractPropertySection {
  private EOEntity myEntity;

  private Button myShareNoObjectsButton;

  private Button myShareAllObjectsButton;

  private Button myShareFetchSpecsButton;

  private TableViewer myFetchSpecsViewer;

  private DataBindingContext myBindingContext;

  private PropertyChangeListener myFetchSpecListener;

  public EOEntitySharedObjectsEditorSection() {
    myFetchSpecListener = new FetchSpecChangeListener();
  }
 
  @Override
  public boolean shouldUseExtraSpace() {
    return true;
  }

  public void createControls(Composite _parent, TabbedPropertySheetPage _tabbedPropertySheetPage) {
    super.createControls(_parent, _tabbedPropertySheetPage);
    Composite form = getWidgetFactory().createFlatFormComposite(_parent);

    Composite topForm = FormUtils.createForm(getWidgetFactory(), form, 1);
    ((GridLayout)topForm.getLayout()).verticalSpacing = 1;

    myShareNoObjectsButton = new Button(topForm, SWT.RADIO);
    myShareNoObjectsButton.setText(Messages.getString("EOEntity.shareNoObjects"));
    myShareNoObjectsButton.addSelectionListener(new ShareNoObjectsListener());

    myShareAllObjectsButton = new Button(topForm, SWT.RADIO);
    myShareAllObjectsButton.setText(Messages.getString("EOEntity.shareAllObjects"));
    myShareAllObjectsButton.addSelectionListener(new ShareAllObjectsListener());

    myShareFetchSpecsButton = new Button(topForm, SWT.RADIO);
    myShareFetchSpecsButton.setText(Messages.getString("EOEntity.shareFetchSpecs"));
    myShareFetchSpecsButton.addSelectionListener(new ShareFetchSpecsListener());

    myFetchSpecsViewer = TableUtils.createTableViewer(topForm, SWT.BORDER | SWT.FLAT | SWT.MULTI | SWT.FULL_SELECTION, "EOFetchSpecification", EOFetchSpecification.class.getName(), new EOFetchSpecsContentProvider(), new EOFetchSpecsLabelProvider(EOFetchSpecification.class.getName()), new TablePropertyViewerSorter(EOFetchSpecification.class.getName()));
    TableColumn nameColumn = TableUtils.getColumn(myFetchSpecsViewer, EOFetchSpecification.class.getName(), EOFetchSpecification.SHARES_OBJECTS);
    if (nameColumn != null) {
      nameColumn.setText("");
      nameColumn.setImage(Activator.getDefault().getImageRegistry().get(Activator.CHECK_ICON));
    }

    CellEditor[] cellEditors = new CellEditor[1];
    TableUtils.setCellEditor(EOFetchSpecification.class.getName(), EOFetchSpecification.SHARES_OBJECTS, new CheckboxCellEditor(myFetchSpecsViewer.getTable()), cellEditors);
    myFetchSpecsViewer.setCellModifier(new TablePropertyCellModifier(myFetchSpecsViewer));
    myFetchSpecsViewer.setCellEditors(cellEditors);
    GridData fetchSpecsLayoutData = new GridData(GridData.FILL_BOTH);
    fetchSpecsLayoutData.verticalIndent = 10;
    //fetchSpecsLayoutData.heightHint = 100;
    myFetchSpecsViewer.getTable().setLayoutData(fetchSpecsLayoutData);
  }

  public void setInput(IWorkbenchPart part, ISelection selection) {
    if (ComparisonUtils.equals(selection, getSelection())) {
      return;
    }
   
    super.setInput(part, selection);
    disposeBindings();

    Object selectedObject = ((IStructuredSelection) selection).getFirstElement();
    myEntity = (EOEntity) selectedObject;
    if (myEntity != null) {
      myBindingContext = new DataBindingContext();
      myEntity.addPropertyChangeListener(EOEntity.FETCH_SPECIFICATION, myFetchSpecListener);
      myEntity.addPropertyChangeListener(EOEntity.FETCH_SPECIFICATIONS, myFetchSpecListener);
      myFetchSpecsViewer.setInput(myEntity);
      fetchSpecsChanged();
    }
  }

  protected void disposeBindings() {
    if (myBindingContext != null) {
      myBindingContext.dispose();
    }
    if (myEntity != null) {
      myEntity.removePropertyChangeListener(EOEntity.FETCH_SPECIFICATION, myFetchSpecListener);
      myEntity.removePropertyChangeListener(EOEntity.FETCH_SPECIFICATIONS, myFetchSpecListener);
    }
  }

  public void dispose() {
    super.dispose();
    disposeBindings();
  }

  public EOEntity getEntity() {
    return myEntity;
  }

  protected void fetchSpecsChanged() {
    myFetchSpecsViewer.refresh();
    shareTypeChanged(false);
  }

  protected void fetchSpecChanged(EOFetchSpecification _fetchSpec) {
    myFetchSpecsViewer.refresh(_fetchSpec);
    shareTypeChanged(false);
  }

  protected void shareTypeChanged(boolean _selectedShareFetchSpecs) {
    if (!_selectedShareFetchSpecs && !myEntity.hasSharedObjects()) {
      if (!myShareNoObjectsButton.getSelection()) {
        myShareNoObjectsButton.setSelection(true);
      }
      myShareAllObjectsButton.setSelection(false);
      myShareFetchSpecsButton.setSelection(false);
      myFetchSpecsViewer.getTable().setEnabled(false);
    } else if (!_selectedShareFetchSpecs && myEntity.isSharesAllObjectsOnly()) {
      if (!myShareAllObjectsButton.getSelection()) {
        myShareAllObjectsButton.setSelection(true);
      }
      myShareNoObjectsButton.setSelection(false);
      myShareFetchSpecsButton.setSelection(false);
      myFetchSpecsViewer.getTable().setEnabled(false);
    } else {
      if (!myShareFetchSpecsButton.getSelection()) {
        myShareFetchSpecsButton.setSelection(true);
      }
      myShareNoObjectsButton.setSelection(false);
      myShareAllObjectsButton.setSelection(false);
      myFetchSpecsViewer.getTable().setEnabled(true);
    }
    TableUtils.packTableColumns(myFetchSpecsViewer);
  }

  protected class FetchSpecChangeListener implements PropertyChangeListener {
    public void propertyChange(PropertyChangeEvent _event) {
      String propertyName = _event.getPropertyName();
      if (EOEntity.FETCH_SPECIFICATION == propertyName) {
        EOFetchSpecification fetchSpec = (EOFetchSpecification) _event.getNewValue();
        EOEntitySharedObjectsEditorSection.this.fetchSpecChanged(fetchSpec);

      } else if (EOEntity.FETCH_SPECIFICATIONS == propertyName) {
        EOEntitySharedObjectsEditorSection.this.fetchSpecsChanged();
      }
    }
  }

  protected class ShareNoObjectsListener implements SelectionListener {
    public void widgetDefaultSelected(SelectionEvent _e) {
      widgetSelected(_e);
    }

    public void widgetSelected(SelectionEvent _e) {
      EOEntitySharedObjectsEditorSection.this.getEntity().shareNoObjects();
    }
  }

  protected class ShareAllObjectsListener implements SelectionListener {
    public void widgetDefaultSelected(SelectionEvent _e) {
      widgetSelected(_e);
    }

    public void widgetSelected(SelectionEvent _e) {
      try {
        EOEntitySharedObjectsEditorSection.this.getEntity().shareAllObjects();
      } catch (DuplicateFetchSpecNameException e) {
        ErrorUtils.openErrorDialog(Display.getDefault().getActiveShell(), e);
      }
    }
  }

  protected class ShareFetchSpecsListener implements SelectionListener {
    public void widgetDefaultSelected(SelectionEvent _e) {
      widgetSelected(_e);
    }

    public void widgetSelected(SelectionEvent _e) {
      if (((Button) _e.getSource()).getSelection()) {
        EOEntitySharedObjectsEditorSection.this.shareTypeChanged(true);
      }
    }
  }
}
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