Package org.objectstyle.wolips.eomodeler.actions

Source Code of org.objectstyle.wolips.eomodeler.actions.CopyAction$CopyOperation

/*
* ====================================================================
*
* 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.actions;

import java.util.LinkedList;
import java.util.List;

import org.eclipse.core.commands.operations.AbstractOperation;
import org.eclipse.core.commands.operations.IOperationHistory;
import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.jface.action.IAction;
import org.eclipse.jface.util.LocalSelectionTransfer;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.StructuredSelection;
import org.eclipse.swt.custom.StyledText;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Text;
import org.eclipse.ui.PlatformUI;
import org.objectstyle.wolips.baseforuiplugins.utils.ErrorUtils;
import org.objectstyle.wolips.eomodeler.core.model.EOModelObject;
import org.objectstyle.wolips.eomodeler.core.utils.EOModelUtils;

public class CopyAction extends EMAction {
  public void run() {
    try {
      Control focusControl = Display.getCurrent().getFocusControl();
      // Is this a copy for the viewer? styled text? or regular text?
      if (focusControl instanceof Text) {
        ((Text) focusControl).copy();
        return;
      } else if (focusControl instanceof StyledText) {
        ((StyledText) focusControl).copy();
        return;
      }

      Object[] selectedObjects = getSelectedObjects();
      if (selectedObjects != null) {
        List<EOModelObject> selectedObjectsList = new LinkedList<EOModelObject>();
        for (Object selectedObject : selectedObjects) {
          if (selectedObject instanceof EOModelObject) {
            EOModelObject<?> object = (EOModelObject) selectedObject;
            selectedObjectsList.add(object._cloneModelObject());
          }
        }
        CopyOperation operation = new CopyOperation(selectedObjectsList);
        operation.addContext(EOModelUtils.getUndoContext(selectedObjects));
        IOperationHistory operationHistory = PlatformUI.getWorkbench().getOperationSupport().getOperationHistory();
        operationHistory.execute(operation, null, null);
      }
    } catch (Throwable t) {
      ErrorUtils.openErrorDialog(Display.getDefault().getActiveShell(), t);
    }
  }

  public void runWithEvent(Event event) {
    run();
  }

  public void run(IAction action) {
    run();
  }

  protected class CopyOperation extends AbstractOperation {
    private List<EOModelObject> _objects;

    private ISelection _previousSelection;

    private long _previousSelectionTime;

    public CopyOperation(List<EOModelObject> objects) {
      super(EOModelUtils.getOperationLabel("Copy", objects));
      _objects = objects;
    }

    @Override
    public IStatus execute(IProgressMonitor monitor, IAdaptable info) {
      _previousSelection = LocalSelectionTransfer.getTransfer().getSelection();
      _previousSelectionTime = LocalSelectionTransfer.getTransfer().getSelectionSetTime();
      LocalSelectionTransfer.getTransfer().setSelection(new StructuredSelection(_objects));
      LocalSelectionTransfer.getTransfer().setSelectionSetTime(System.currentTimeMillis());
      return Status.OK_STATUS;
    }

    @Override
    public IStatus redo(IProgressMonitor monitor, IAdaptable info) {
      return execute(monitor, info);
    }

    @Override
    public IStatus undo(IProgressMonitor monitor, IAdaptable info) {
      LocalSelectionTransfer.getTransfer().setSelection(_previousSelection);
      LocalSelectionTransfer.getTransfer().setSelectionSetTime(_previousSelectionTime);
      return Status.OK_STATUS;
    }

  }
}
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