Package org.pentaho.reporting.designer.core.xul

Source Code of org.pentaho.reporting.designer.core.xul.ActionSwingButton$ActionChangeHandler

/*!
* This program is free software; you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License, version 2.1 as published by the Free Software
* Foundation.
*
* You should have received a copy of the GNU Lesser General Public License along with this
* program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
* or from the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU Lesser General Public License for more details.
*
* Copyright (c) 2002-2013 Pentaho Corporation..  All rights reserved.
*/

package org.pentaho.reporting.designer.core.xul;

import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import javax.swing.AbstractButton;
import javax.swing.Action;
import javax.swing.Icon;
import javax.swing.JComponent;
import javax.swing.JToolBar;
import javax.swing.KeyStroke;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.pentaho.reporting.designer.core.DesignerContextComponent;
import org.pentaho.reporting.designer.core.ReportDesignerContext;
import org.pentaho.reporting.designer.core.actions.DesignerContextAction;
import org.pentaho.reporting.designer.core.actions.ToggleStateAction;
import org.pentaho.reporting.libraries.base.util.ObjectUtilities;
import org.pentaho.ui.xul.XulComponent;
import org.pentaho.ui.xul.XulDomContainer;
import org.pentaho.ui.xul.dom.Element;
import org.pentaho.ui.xul.swing.tags.SwingButton;

/**
* Todo: Document Me
*
* @author Thomas Morgner
*/
public class ActionSwingButton extends SwingButton implements DesignerContextComponent
{
  private static final Log logger = LogFactory.getLog(ActionSwingMenuitem.class);

  private class ActionChangeHandler implements PropertyChangeListener
  {
    private static final String ENABLED = "enabled";
    private static final String SELECTED = "selected";

    /**
     * Receives notification of a property change event.
     *
     * @param event the property change event.
     */
    public void propertyChange(final PropertyChangeEvent event)
    {
      try
      {
        final String propertyName = event.getPropertyName();
        final Action actionImpl = getActionImpl();
        if (ENABLED.equals(propertyName))
        {
          setDisabled(actionImpl.isEnabled() == false);
        }
        else if (SELECTED.equals(propertyName))
        {
          setSelected(Boolean.TRUE.equals(event.getNewValue()));
        }
        else if (propertyName.equals(Action.SMALL_ICON))
        {
          setIcon((Icon) actionImpl.getValue(Action.SMALL_ICON));
        }
        else if (propertyName.equals(Action.NAME))
        {
          setLabel((String) actionImpl.getValue(Action.NAME));
        }
        else if (propertyName.equals(Action.SHORT_DESCRIPTION))
        {
          ActionSwingButton.this.setTooltiptext((String)
              actionImpl.getValue(Action.SHORT_DESCRIPTION));
        }

        if (propertyName.equals(Action.ACCELERATOR_KEY))
        {

          final KeyStroke oldVal = (KeyStroke) event.getOldValue();
          if (oldVal != null)
          {
            getButton().unregisterKeyboardAction(oldVal);
          }
          final Object o = actionImpl.getValue(Action.ACCELERATOR_KEY);
          if (o instanceof KeyStroke)
          {
            final KeyStroke k = (KeyStroke) o;
            getButton().registerKeyboardAction(actionImpl, k, JComponent.WHEN_IN_FOCUSED_WINDOW);
          }
        }
        else if (propertyName.equals(Action.MNEMONIC_KEY))
        {
          final Object o = actionImpl.getValue(Action.MNEMONIC_KEY);
          if (o != null)
          {
            if (o instanceof Character)
            {
              final Character c = (Character) o;
              getButton().setMnemonic(c.charValue());
            }
            else if (o instanceof Integer)
            {
              final Integer c = (Integer) o;
              getButton().setMnemonic(c.intValue());
            }
          }
          else
          {
            getButton().setMnemonic(-1);
          }
        }
      }
      catch (Exception e)
      {
        ActionSwingButton.logger.warn("Error on PropertyChange in ActionButton: ", e);//NON-NLS
      }
    }
  }

  private Action action;
  private String actionClass;
  private ActionChangeHandler actionChangeHandler;
  private ReportDesignerContext reportDesignerContext;
  private boolean parentIsToolbar;

  public ActionSwingButton(final Element self,
                           final XulComponent parent,
                           final XulDomContainer domContainer,
                           final String tagName)
  {
    super(self, parent, domContainer, tagName);
    this.actionChangeHandler = new ActionChangeHandler();

    final AbstractButton button = getButton();
    parentIsToolbar = computeParentToolbar(parent);
    if (parentIsToolbar)
    {
      button.putClientProperty("hideActionText", Boolean.TRUE);//NON-NLS
    }
  }

  private boolean computeParentToolbar(XulComponent parent)
  {
    while (parent != null)
    {
      if (parent.getManagedObject() instanceof JToolBar)
      {
        return true;
      }
      parent = parent.getParent();
    }
    return false;
  }

  protected void setButton(final AbstractButton button)
  {
    final AbstractButton oldButton = getButton();
    oldButton.setAction(null);
    super.setButton(button);
    if (parentIsToolbar)
    {
      button.putClientProperty("hideActionText", Boolean.TRUE);//NON-NLS
    }
    button.setAction(action);
  }

  protected Action getActionImpl()
  {
    return action;
  }

  public String getAction()
  {
    return actionClass;
  }

  public void setAction(final String action)
  {
    if (this.action != null)
    {
      uninstallAction(this.action);
    }
    this.actionClass = action;
    if (this.actionClass != null)
    {
      this.action = (Action) ObjectUtilities.loadAndInstantiate(actionClass, ActionSwingMenuitem.class, Action.class);
    }
    if (this.action != null)
    {
      installAction(this.action);
    }
  }

  protected void setIcon(final Icon icon)
  {
    // here we by-pass the Xul-Framework, as the icon can be a computed one.
    getButton().setIcon(icon);
  }

  protected void uninstallAction(final Action oldAction)
  {
    if (oldAction != null)
    {
      getButton().setAction(null);
      final Object o = oldAction.getValue(Action.ACCELERATOR_KEY);
      if (o instanceof KeyStroke)
      {
        final KeyStroke k = (KeyStroke) o;
        getButton().unregisterKeyboardAction(k);
      }
      oldAction.removePropertyChangeListener(actionChangeHandler);
    }
  }

  protected void installAction(final Action newAction)
  {
    if (newAction != null)
    {
      setTooltiptext((String) action.getValue(Action.SHORT_DESCRIPTION));
      setLabel((String) action.getValue(Action.NAME));
      setDisabled(action.isEnabled() == false);
      setIcon((Icon) action.getValue(Action.SMALL_ICON));

      getButton().setAction(newAction);
      newAction.addPropertyChangeListener(actionChangeHandler);

      final Object o = newAction.getValue(Action.ACCELERATOR_KEY);
      if (o instanceof KeyStroke)
      {
        final KeyStroke k = (KeyStroke) o;
        getButton().registerKeyboardAction(newAction, k, JComponent.WHEN_IN_FOCUSED_WINDOW);
      }

      if (newAction instanceof ToggleStateAction)
      {
        final ToggleStateAction tsa = (ToggleStateAction) action;
        setSelected(tsa.isSelected());
      }
    }

  }

  public void setReportDesignerContext(final ReportDesignerContext context)
  {
    this.reportDesignerContext = context;
    if (action instanceof DesignerContextAction)
    {
      final DesignerContextAction dca = (DesignerContextAction) action;
      dca.setReportDesignerContext(reportDesignerContext);
    }
  }

  public ReportDesignerContext getReportDesignerContext()
  {
    return reportDesignerContext;
  }

  public void setLabel(final String label)
  {
    if (parentIsToolbar == false)
    {
      super.setLabel(label);
    }
  }
}
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