Package org.objectstyle.wolips.eomodeler.editors.fetchspec

Source Code of org.objectstyle.wolips.eomodeler.editors.fetchspec.EOFetchSpecSortOrderingEditorSection$RemoveSortOrderingHandler

/*
* ====================================================================
*
* 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.
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* 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.fetchspec;

import java.util.Iterator;

import org.eclipse.jface.viewers.CellEditor;
import org.eclipse.jface.viewers.CheckboxCellEditor;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.ISelectionChangedListener;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.SelectionChangedEvent;
import org.eclipse.jface.viewers.TableViewer;
import org.eclipse.jface.viewers.TreeViewer;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.events.SelectionListener;
import org.eclipse.swt.layout.FormLayout;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.widgets.Composite;
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.WOTextCellEditor;
import org.objectstyle.wolips.eomodeler.Activator;
import org.objectstyle.wolips.eomodeler.core.model.EOAttribute;
import org.objectstyle.wolips.eomodeler.core.model.EOAttributePath;
import org.objectstyle.wolips.eomodeler.core.model.EOFetchSpecification;
import org.objectstyle.wolips.eomodeler.core.model.EOSortOrdering;
import org.objectstyle.wolips.eomodeler.outline.EOEntityTreeViewUpdater;
import org.objectstyle.wolips.eomodeler.outline.EOModelOutlineContentProvider;
import org.objectstyle.wolips.eomodeler.utils.AddRemoveButtonGroup;
import org.objectstyle.wolips.eomodeler.utils.FormUtils;
import org.objectstyle.wolips.eomodeler.utils.StayEditingCellEditorListener;
import org.objectstyle.wolips.eomodeler.utils.TablePropertyCellModifier;
import org.objectstyle.wolips.eomodeler.utils.TableRefreshPropertyListener;
import org.objectstyle.wolips.eomodeler.utils.TableRowRefreshPropertyListener;
import org.objectstyle.wolips.eomodeler.utils.TableUtils;

public class EOFetchSpecSortOrderingEditorSection extends AbstractPropertySection implements ISelectionChangedListener {
  private EOFetchSpecification myFetchSpecification;

  private TreeViewer myModelTreeViewer;

  private TableViewer mySortOrderingsTableViewer;

  private AddRemoveButtonGroup myAddRemoveButtonGroup;

  private EOEntityTreeViewUpdater myEntityTreeViewUpdater;

  private TableRefreshPropertyListener mySortOrderingsChangedRefresher;

  private TableRowRefreshPropertyListener myTableRowRefresher;

  public EOFetchSpecSortOrderingEditorSection() {
    // DO NOTHING
  }
 
  @Override
  public boolean shouldUseExtraSpace() {
    return true;
  }

  public void createControls(Composite _parent, TabbedPropertySheetPage _tabbedPropertySheetPage) {
    super.createControls(_parent, _tabbedPropertySheetPage);

    Composite form = getWidgetFactory().createPlainComposite(_parent, SWT.NONE);
    FormLayout formLayout = new FormLayout();
    form.setLayout(formLayout);

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

    myModelTreeViewer = new TreeViewer(topForm);
    GridData modelTreeLayoutData = new GridData(GridData.FILL_BOTH);
    //modelTreeLayoutData.heightHint = 100;
    myModelTreeViewer.getTree().setLayoutData(modelTreeLayoutData);
    myEntityTreeViewUpdater = new EOEntityTreeViewUpdater(myModelTreeViewer, new EOModelOutlineContentProvider(true, true, true, false, false, false, false, true));
    myModelTreeViewer.addSelectionChangedListener(this);

    mySortOrderingsTableViewer = TableUtils.createTableViewer(topForm, "EOFetchSpecification", EOSortOrdering.class.getName(), new EOSortOrderingsContentProvider(), new EOSortOrderingsLabelProvider(EOSortOrdering.class.getName()), null);

    TableColumn ascendingColumn = TableUtils.getColumn(mySortOrderingsTableViewer, EOSortOrdering.class.getName(), EOSortOrdering.ASCENDING);
    if (ascendingColumn != null) {
      ascendingColumn.setText("");
      ascendingColumn.setImage(Activator.getDefault().getImageRegistry().get(Activator.ASCENDING_ICON));
    }

    TableColumn caseInsensitiveColumn = TableUtils.getColumn(mySortOrderingsTableViewer, EOSortOrdering.class.getName(), EOSortOrdering.CASE_INSENSITIVE);
    if (caseInsensitiveColumn != null) {
      caseInsensitiveColumn.setText("i/s");
    }

    GridData sortOrderingsTableLayoutData = new GridData(GridData.FILL_BOTH);
    //sortOrderingsTableLayoutData.heightHint = 100;
    mySortOrderingsTableViewer.addSelectionChangedListener(this);
    mySortOrderingsChangedRefresher = new TableRefreshPropertyListener("SortOrderingsChanged", mySortOrderingsTableViewer);
    myTableRowRefresher = new TableRowRefreshPropertyListener(mySortOrderingsTableViewer);

    CellEditor[] cellEditors = new CellEditor[TableUtils.getColumnsForTableNamed(EOSortOrdering.class.getName()).length];
    TableUtils.setCellEditor(EOSortOrdering.class.getName(), EOSortOrdering.KEY, new WOTextCellEditor(mySortOrderingsTableViewer.getTable()), cellEditors);
    TableUtils.setCellEditor(EOSortOrdering.class.getName(), EOSortOrdering.ASCENDING, new CheckboxCellEditor(mySortOrderingsTableViewer.getTable()), cellEditors);
    TableUtils.setCellEditor(EOSortOrdering.class.getName(), EOSortOrdering.CASE_INSENSITIVE, new CheckboxCellEditor(mySortOrderingsTableViewer.getTable()), cellEditors);
    mySortOrderingsTableViewer.setCellEditors(cellEditors);
    mySortOrderingsTableViewer.setCellModifier(new TablePropertyCellModifier(mySortOrderingsTableViewer));
    mySortOrderingsTableViewer.getTable().setLayoutData(sortOrderingsTableLayoutData);

    new StayEditingCellEditorListener(mySortOrderingsTableViewer, EOSortOrdering.class.getName(), EOSortOrdering.KEY);

    myAddRemoveButtonGroup = new AddRemoveButtonGroup(topForm, new AddSortOrderingHandler(), new RemoveSortOrderingHandler());
    myAddRemoveButtonGroup.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
  }

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

    Object selectedObject = ((IStructuredSelection) selection).getFirstElement();
    myFetchSpecification = (EOFetchSpecification) selectedObject;
    if (myFetchSpecification != null) {
      myFetchSpecification.addPropertyChangeListener(EOFetchSpecification.SORT_ORDERINGS, mySortOrderingsChangedRefresher);
      myFetchSpecification.addPropertyChangeListener(EOFetchSpecification.SORT_ORDERING, myTableRowRefresher);
      myEntityTreeViewUpdater.setEntity(myFetchSpecification.getEntity());
      mySortOrderingsTableViewer.setInput(myFetchSpecification);
      TableUtils.packTableColumns(mySortOrderingsTableViewer);
      updateButtonsEnabled();
    }
  }

  protected void disposeBindings() {
    if (myFetchSpecification != null) {
      myFetchSpecification.removePropertyChangeListener(EOFetchSpecification.SORT_ORDERINGS, mySortOrderingsChangedRefresher);
      myFetchSpecification.removePropertyChangeListener(EOFetchSpecification.SORT_ORDERING, myTableRowRefresher);
    }
  }

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

  public void addSortOrdering() {
    IStructuredSelection selection = (IStructuredSelection) myModelTreeViewer.getSelection();
    Object selectedObject = selection.getFirstElement();
    String path;
    if (selectedObject instanceof EOAttributePath) {
      path = ((EOAttributePath) selectedObject).toKeyPath();
    } else if (selectedObject instanceof EOAttribute) {
      path = ((EOAttribute) selectedObject).getName();
    } else {
      path = null;
    }
    if (path != null) {
      EOSortOrdering sortOrdering = new EOSortOrdering();
      sortOrdering.setKey(path);
      sortOrdering.setSelectorName(EOSortOrdering.ASCENDING);
      myFetchSpecification.addSortOrdering(sortOrdering, true);
      TableUtils.packTableColumns(mySortOrderingsTableViewer);
    }
  }

  public void removeSortOrdering() {
    IStructuredSelection selection = (IStructuredSelection) mySortOrderingsTableViewer.getSelection();
    Iterator selectedObjectsIter = selection.toList().iterator();
    while (selectedObjectsIter.hasNext()) {
      EOSortOrdering sortOrdering = (EOSortOrdering) selectedObjectsIter.next();
      myFetchSpecification.removeSortOrdering(sortOrdering, true);
    }
  }

  public void updateButtonsEnabled() {
    Object selectedObject = ((IStructuredSelection) myModelTreeViewer.getSelection()).getFirstElement();
    boolean addEnabled = (selectedObject instanceof EOAttributePath || selectedObject instanceof EOAttribute);
    myAddRemoveButtonGroup.setAddEnabled(addEnabled);
    myAddRemoveButtonGroup.setRemoveEnabled(!mySortOrderingsTableViewer.getSelection().isEmpty());
  }

  public void selectionChanged(SelectionChangedEvent _event) {
    updateButtonsEnabled();
  }

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

    public void widgetSelected(SelectionEvent _e) {
      EOFetchSpecSortOrderingEditorSection.this.addSortOrdering();
    }
  }

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

    public void widgetSelected(SelectionEvent _e) {
      EOFetchSpecSortOrderingEditorSection.this.removeSortOrdering();
    }
  }
}
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