Package org.pentaho.reporting.designer.core.editor

Source Code of org.pentaho.reporting.designer.core.editor.ReportRenderContext$ZoomUpdateHandler

/*!
* 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.editor;

import java.awt.Image;
import java.beans.BeanInfo;
import java.beans.PropertyChangeListener;
import java.beans.PropertyChangeSupport;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Locale;
import javax.swing.Icon;
import javax.swing.ImageIcon;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;

import org.pentaho.reporting.designer.core.Messages;
import org.pentaho.reporting.designer.core.ReportDesignerBoot;
import org.pentaho.reporting.designer.core.auth.AuthenticationStore;
import org.pentaho.reporting.designer.core.auth.GlobalAuthenticationStore;
import org.pentaho.reporting.designer.core.auth.ReportAuthenticationStore;
import org.pentaho.reporting.designer.core.editor.report.layouting.SharedElementRenderer;
import org.pentaho.reporting.designer.core.inspections.AutoInspectionRunner;
import org.pentaho.reporting.designer.core.inspections.InspectionResultListener;
import org.pentaho.reporting.designer.core.inspections.InspectionRunner;
import org.pentaho.reporting.designer.core.inspections.NoOpInspectionRunner;
import org.pentaho.reporting.designer.core.model.ModelUtility;
import org.pentaho.reporting.designer.core.model.data.AsynchronousDataSchemaManager;
import org.pentaho.reporting.designer.core.model.data.DataSchemaManager;
import org.pentaho.reporting.designer.core.model.data.SynchronousDataSchemaManager;
import org.pentaho.reporting.designer.core.model.selection.DefaultReportSelectionModel;
import org.pentaho.reporting.designer.core.model.selection.DocumentContextSelectionModel;
import org.pentaho.reporting.designer.core.util.undo.UndoManager;
import org.pentaho.reporting.engine.classic.core.AbstractReportDefinition;
import org.pentaho.reporting.engine.classic.core.CrosstabElement;
import org.pentaho.reporting.engine.classic.core.Element;
import org.pentaho.reporting.engine.classic.core.MasterReport;
import org.pentaho.reporting.engine.classic.core.PageDefinition;
import org.pentaho.reporting.engine.classic.core.RootLevelBand;
import org.pentaho.reporting.engine.classic.core.Section;
import org.pentaho.reporting.engine.classic.core.event.ReportModelEvent;
import org.pentaho.reporting.engine.classic.core.event.ReportModelListener;
import org.pentaho.reporting.engine.classic.core.wizard.ContextAwareDataSchemaModel;
import org.pentaho.reporting.libraries.base.util.ArgumentNullException;
import org.pentaho.reporting.libraries.base.util.IOUtils;
import org.pentaho.reporting.libraries.base.util.ObjectUtilities;
import org.pentaho.reporting.libraries.base.util.StringUtils;
import org.pentaho.reporting.libraries.docbundle.ODFMetaAttributeNames;
import org.pentaho.reporting.libraries.resourceloader.ResourceManager;

/**
* A render context that covers a single report-model. Report-Definition and master-report can be the same object, but
* are not necessarily the same. ReportDef could be a subreport and the master-report is always the single
* master-report.
*
* @author Thomas Morgner
*/
public class ReportRenderContext implements ReportDocumentContext
{
  private static class ReportNameUpdateHandler implements ReportModelListener
  {
    private ReportRenderContext context;

    protected ReportNameUpdateHandler(final ReportRenderContext context)
    {
      this.context = context;
      this.context.setTabName(computeTabName(this.context.getReportDefinition()));
    }

    public void nodeChanged(final ReportModelEvent event)
    {
      AbstractReportDefinition report = context.getReportDefinition();
      if (event.getElement() == report &&
          event.getType() == ReportModelEvent.NODE_PROPERTIES_CHANGED)
      {
        context.setTabName(computeTabName(report));
      }
    }

    private String computeTabName(final AbstractReportDefinition report)
    {
      if (report instanceof MasterReport)
      {
        final MasterReport mreport = (MasterReport) report;
        final Object title = mreport.getBundle().getMetaData().getBundleAttribute
            (ODFMetaAttributeNames.DublinCore.NAMESPACE, ODFMetaAttributeNames.DublinCore.TITLE);
        if (title instanceof String)
        {
          return (String) title;
        }
      }

      final String name = report.getName();
      if (StringUtils.isEmpty(name) == false)
      {
        return name;
      }

      final String theSavePath = (String) report.getAttribute(ReportDesignerBoot.DESIGNER_NAMESPACE, "report-save-path");// NON-NLS
      if (!StringUtils.isEmpty(theSavePath))
      {
        final String fileName = IOUtils.getInstance().getFileName(theSavePath);
        return IOUtils.getInstance().stripFileExtension(fileName);
      }

      if (report instanceof MasterReport)
      {
        return Messages.getString("ReportDesignerFrame.TabName.UntitledReport");// NON-NLS
      }
      else if (report instanceof CrosstabElement)
      {
        return Messages.getString("ReportDesignerFrame.TabName.UntitledCrosstab");// NON-NLS
      }
      else
      {
        return Messages.getString("ReportDesignerFrame.TabName.UntitledSubReport");// NON-NLS
      }
    }
  }


  // TODO add a new delete listener that is looking for embedded resources - separate class

  private class NodeDeleteListener implements ReportModelListener
  {
    private NodeDeleteListener()
    {
    }

    public void nodeChanged(final ReportModelEvent event)
    {
      if (event.isNodeDeleteEvent())
      {
        final DocumentContextSelectionModel selectionModel = getSelectionModel();
        final AbstractReportDefinition reportDefinition = getReportDefinition();
        final Object element = event.getElement();
        if (element instanceof Element)
        {
          final List<Element> selectedElements = selectionModel.getSelectedElementsOfType(Element.class);
          for (final Element selectedElement : selectedElements)
          {
            if (ModelUtility.isDescendant(reportDefinition, selectedElement) == false)
            {
              selectionModel.remove(element);
            }
          }
        }
        else
        {
          selectionModel.remove(element);
        }
      }
    }
  }

  private class ZoomUpdateHandler implements ZoomModelListener
  {
    private ZoomUpdateHandler()
    {
    }

    public void zoomFactorChanged()
    {
      //noinspection UnnecessaryBoxing
      reportDefinition.setAttribute(ReportDesignerBoot.DESIGNER_NAMESPACE, ReportDesignerBoot.ZOOM,
          new Float(zoomModel.getZoomAsPercentage()), false);
    }
  }

  private class DataSchemaManagerUpdateHandler implements ChangeListener {
    public void stateChanged(final ChangeEvent e)
    {
      fireDataSourceChangedEvent();
    }
  }

  private static final String AUTHENTICATION_STORE_PROPERTY = "authentication-store";

  private final PropertyChangeSupport propertyChangeSupport;
  private final SharedElementRenderer sharedRenderer;
  private final ZoomModel zoomModel;
  private final MasterReport masterReportElement;
  private final AbstractReportDefinition reportDefinition;
  private final DocumentContextSelectionModel selectionModel;
  private final InspectionRunner inspectionRunner;
  private final UndoManager undo;
  private final NodeDeleteListener deleteListener;
  private final HashMap<String, Object> properties;
  private final DataSchemaManager dataSchemaManager;
  private final boolean bandedContext;
  private final ArrayList<ReportDataChangeListener> dataChangeListeners;
  private String tabName;
  private Icon icon;
  private long changeTracker;

  public ReportRenderContext(final MasterReport masterReport)
  {
    this(masterReport, masterReport, null, new GlobalAuthenticationStore());
  }

  public ReportRenderContext(final MasterReport masterReportElement,
                             final AbstractReportDefinition report,
                             final ReportDocumentContext parentContext,
                             final GlobalAuthenticationStore globalAuthenticationStore)
  {
    this(masterReportElement, report, parentContext, globalAuthenticationStore, false);
  }

  public ReportRenderContext(final MasterReport masterReportElement,
                             final AbstractReportDefinition report,
                             final ReportDocumentContext parentContext,
                             final GlobalAuthenticationStore globalAuthenticationStore,
                             final boolean computationTarget)
  {
    if (masterReportElement == null)
    {
      throw new NullPointerException();
    }
    if (report == null)
    {
      throw new NullPointerException();
    }

    this.dataChangeListeners = new ArrayList<ReportDataChangeListener>();
    this.propertyChangeSupport = new PropertyChangeSupport(this);

    this.selectionModel = new DefaultReportSelectionModel();
    this.masterReportElement = masterReportElement;

    this.deleteListener = new NodeDeleteListener();

    this.reportDefinition = report;
    this.reportDefinition.addReportModelListener(deleteListener);
    this.reportDefinition.addReportModelListener(new ReportNameUpdateHandler(this));

    this.zoomModel = new ZoomModel();
    this.zoomModel.addZoomModelListener(new ZoomUpdateHandler());

    this.bandedContext = computeBandedContext(parentContext);

    this.dataSchemaManager = new AsynchronousDataSchemaManager(masterReportElement, report);
    this.dataSchemaManager.addChangeListener(new DataSchemaManagerUpdateHandler());

    if (!computationTarget)
    {
      this.inspectionRunner = new AutoInspectionRunner(this);
      this.reportDefinition.addReportModelListener(inspectionRunner);
      this.undo = createUndoManager();
    }
    else
    {
      this.inspectionRunner = NoOpInspectionRunner.INSTANCE;
      this.undo = null;
    }

    final Object f = this.reportDefinition.getAttribute(ReportDesignerBoot.DESIGNER_NAMESPACE, ReportDesignerBoot.ZOOM);
    if (f instanceof Float)
    {
      final Float zoomFactor = (Float) f;
      //noinspection UnnecessaryUnboxing
      this.zoomModel.setZoomAsPercentage(zoomFactor.floatValue());
    }

    if (parentContext == null)
    {
      this.properties = new HashMap<String, Object>();
      this.sharedRenderer = new SharedElementRenderer(this);
    }
    else
    {
      this.sharedRenderer = parentContext.getSharedRenderer();
      this.properties = parentContext.getProperties();
    }

    prepareAuthenticationStore(globalAuthenticationStore);
    prepareIcon();
  }

  private UndoManager createUndoManager()
  {
    final Object o = this.reportDefinition.getAttribute(ReportDesignerBoot.DESIGNER_NAMESPACE, "undo"); // NON-NLS
    if (o instanceof UndoManager)
    {
      return (UndoManager) o;
    }
    else
    {
      return new UndoManager();
    }
  }

  private void prepareAuthenticationStore(final GlobalAuthenticationStore globalAuthenticationStore)
  {
    final Object maybeAuthStore = getProperty(AUTHENTICATION_STORE_PROPERTY);
    if (maybeAuthStore == null)
    {
      setProperty(AUTHENTICATION_STORE_PROPERTY, new ReportAuthenticationStore(globalAuthenticationStore));
    }
  }

  private void prepareIcon()
  {
    final Image iconImage = reportDefinition.getElementType().getMetaData().getIcon(Locale.getDefault(), BeanInfo.ICON_COLOR_16x16);
    if (iconImage != null)
    {
      icon = new ImageIcon(iconImage);
    }
    else
    {
      icon = null;
    }
  }

  public void addReportDataChangeListener(final ReportDataChangeListener l)
  {
    ArgumentNullException.validate("l", l);
    dataChangeListeners.add(l);
  }

  public void removeReportDataChangeListener(final ReportDataChangeListener l)
  {
    ArgumentNullException.validate("l", l);
    dataChangeListeners.remove(l);
  }

  protected void fireDataSourceChangedEvent() {
    if (dataChangeListeners.isEmpty()) {
      return;
    }
    for (final ReportDataChangeListener listener : dataChangeListeners)
    {
      listener.dataModelChanged(this);
    }
  }

  public boolean isBandedContext()
  {
    return bandedContext;
  }

  private boolean computeBandedContext(final ReportDocumentContext parentContext)
  {
    if (parentContext == null)
    {
      return true;
    }
    if (reportDefinition instanceof MasterReport)
    {
      return true;
    }
    if (parentContext.isBandedContext() == false)
    {
      return false;
    }

    final Section parentSection = reportDefinition.getParentSection();
    if (parentSection instanceof RootLevelBand == false)
    {
      return false;
    }

    final RootLevelBand rlb = (RootLevelBand) parentSection;
    for (int i = 0; i < rlb.getSubReportCount(); i += 1)
    {
      if (rlb.getSubReport(i) == reportDefinition)
      {
        return true;
      }
    }
    return false;
  }

  public SharedElementRenderer getSharedRenderer()
  {
    return sharedRenderer;
  }

  public DocumentContextSelectionModel getSelectionModel()
  {
    return selectionModel;
  }

  public ContextAwareDataSchemaModel getReportDataSchemaModel()
  {
    return dataSchemaManager.getModel();
  }

  protected InspectionRunner getInspectionRunner()
  {
    return inspectionRunner;
  }

  public ZoomModel getZoomModel()
  {
    return zoomModel;
  }

  public MasterReport getMasterReportElement()
  {
    return masterReportElement;
  }

  public MasterReport getContextRoot()
  {
    return getMasterReportElement();
  }

  public AbstractReportDefinition getReportDefinition()
  {
    return reportDefinition;
  }

  @Deprecated
  public PageDefinition getPageDefinition()
  {
    return masterReportElement.getPageDefinition();
  }

  public boolean isChanged()
  {
    return getMasterReportElement().getChangeTracker() != changeTracker;
  }

  public void resetChangeTracker()
  {
    this.changeTracker = getMasterReportElement().getChangeTracker();
  }

  public UndoManager getUndo()
  {
    return undo;
  }

  public ResourceManager getResourceManager()
  {
    return masterReportElement.getResourceManager();
  }

  public void dispose()
  {
    this.dataSchemaManager.close();
    this.inspectionRunner.dispose();
    this.reportDefinition.removeReportModelListener(inspectionRunner);
    this.reportDefinition.removeReportModelListener(deleteListener);
  }

  public void setProperty(final String property, final Object value)
  {
    if (value == null)
    {
      properties.remove(property);
      return;
    }
    properties.put(property, value);
  }

  public Object getProperty(final String property)
  {
    return properties.get(property);
  }

  public HashMap<String, Object> getProperties()
  {
    return properties;
  }

  public AuthenticationStore getAuthenticationStore()
  {
    return (AuthenticationStore) getProperty(AUTHENTICATION_STORE_PROPERTY);
  }

  public String getTabName()
  {
    return tabName;
  }

  public void setTabName(final String tabName)
  {
    String oldName = this.tabName;
    if (ObjectUtilities.equal(oldName, tabName))
    {
      return;
    }

    this.tabName = tabName;
    firePropertyChange("tabName", oldName, tabName);
  }

  public Icon getIcon()
  {
    return icon;
  }

  public String getDocumentFile()
  {
    return (String) masterReportElement.getAttribute(ReportDesignerBoot.DESIGNER_NAMESPACE, "report-save-path");
  }

  public void removePropertyChangeListener(final String propertyName, final PropertyChangeListener listener)
  {
    propertyChangeSupport.removePropertyChangeListener(propertyName, listener);
  }

  public void addPropertyChangeListener(final String propertyName, final PropertyChangeListener listener)
  {
    propertyChangeSupport.addPropertyChangeListener(propertyName, listener);
  }

  public void removePropertyChangeListener(final PropertyChangeListener listener)
  {
    propertyChangeSupport.removePropertyChangeListener(listener);
  }

  public void addPropertyChangeListener(final PropertyChangeListener listener)
  {
    propertyChangeSupport.addPropertyChangeListener(listener);
  }

  protected void firePropertyChange(final String propertyName, final Object oldValue, final Object newValue)
  {
    propertyChangeSupport.firePropertyChange(propertyName, oldValue, newValue);
  }

  public void onDocumentActivated()
  {
    getInspectionRunner().startTimer();
  }

  public void addInspectionListener(final InspectionResultListener listener)
  {
    getInspectionRunner().addInspectionListener(listener);
  }

  public void removeInspectionListener(final InspectionResultListener listener)
  {
    getInspectionRunner().removeInspectionListener(listener);
  }
}
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