plugins/org.eclipse.emf.cdo.ui.team/src/org/eclipse/emf/cdo/ui/internal/team/history/CDOHistoryPage.java

/*
 * Copyright (c) 2004 - 2012 Eike Stepper (Berlin, Germany) and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *    Eike Stepper - initial API and implementation
 */
package org.eclipse.emf.cdo.ui.internal.team.history;

import org.eclipse.emf.cdo.ui.widgets.CommitHistoryComposite;
import org.eclipse.emf.cdo.ui.widgets.CommitHistoryComposite.Input;

import org.eclipse.core.runtime.Platform;
import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.team.ui.history.HistoryPage;

/**
 * @author Eike Stepper
 */
public class CDOHistoryPage extends HistoryPage
{
  private CommitHistoryComposite commitHistoryComposite;

  private Input input;

  public CDOHistoryPage()
  {
  }

  public String getName()
  {
    return input != null ? input.toString() : null;
  }

  public String getDescription()
  {
    return "";
  }

  @Override
  public CommitHistoryComposite getControl()
  {
    return commitHistoryComposite;
  }

  @Override
  public void createControl(Composite parent)
  {
    commitHistoryComposite = new CommitHistoryComposite(parent, SWT.NONE);
  }

  @Override
  public void setFocus()
  {
    commitHistoryComposite.setFocus();
  }

  public void refresh()
  {
    commitHistoryComposite.getTableViewer().refresh();
  }

  public Object getAdapter(@SuppressWarnings("rawtypes") Class adapter)
  {
    return Platform.getAdapterManager().getAdapter(this, adapter);
  }

  public boolean isValidInput(Object object)
  {
    return canShowHistoryFor(object);
  }

  @Override
  public boolean inputSet()
  {
    Object object = getInput();

    try
    {
      input = new CommitHistoryComposite.Input(object);
      return true;
    }
    catch (IllegalStateException ex)
    {
      input = null;
      return false;
    }
    finally
    {
      commitHistoryComposite.setInput(input);
    }
  }

  public static boolean canShowHistoryFor(Object object)
  {
    try
    {
      new CommitHistoryComposite.Input(object);
      return true;
    }
    catch (IllegalStateException ex)
    {
      return false;
    }
  }
}