tablecellimpl.java

基于JXTA开发平台的下载软件开发源代码

/*
 * File    : TableCellImpl.java
 * Created : 24 nov. 2003
 * By      : Olivier
 * Originally PluginItem.java, and changed to be more generic.
 *
 * Copyright (C) 2004, 2005, 2006 Aelitis SAS, All rights Reserved
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License.
 *
 * 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 General Public License for more details ( see the LICENSE file ).
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * AELITIS, SAS au capital de 46,603.30 euros,
 * 8 Allee Lenotre, La Grille Royale, 78600 Le Mesnil le Roi, France.
 */
 
package org.gudy.azureus2.ui.swt.views.table.impl;

import java.text.Collator;
import java.util.ArrayList;
import java.util.Comparator;
import java.util.Iterator;
import java.util.Locale;

import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.*;

import org.gudy.azureus2.core3.config.COConfigurationManager;
import org.gudy.azureus2.core3.config.ParameterListener;
import org.gudy.azureus2.core3.logging.*;
import org.gudy.azureus2.core3.util.AEMonitor;
import org.gudy.azureus2.core3.util.AERunnable;
import org.gudy.azureus2.core3.util.Debug;
import org.gudy.azureus2.plugins.ui.Graphic;
import org.gudy.azureus2.plugins.ui.UIRuntimeException;
import org.gudy.azureus2.plugins.ui.SWT.GraphicSWT;
import org.gudy.azureus2.plugins.ui.tables.*;
import org.gudy.azureus2.ui.swt.Utils;
import org.gudy.azureus2.ui.swt.components.BufferedGraphicTableItem;
import org.gudy.azureus2.ui.swt.components.BufferedGraphicTableItem1;
import org.gudy.azureus2.ui.swt.components.BufferedGraphicTableItem2;
import org.gudy.azureus2.ui.swt.components.BufferedTableItem;
import org.gudy.azureus2.ui.swt.components.BufferedTableRow;
import org.gudy.azureus2.ui.swt.plugins.UISWTGraphic;
import org.gudy.azureus2.ui.swt.pluginsimpl.UISWTGraphicImpl;
import org.gudy.azureus2.ui.swt.views.table.TableCellCore;
import org.gudy.azureus2.ui.swt.views.table.TableColumnCore;
import org.gudy.azureus2.ui.swt.views.table.TableRowCore;


/** TableCellImpl represents one cell in the table.  
 * Table access is provided by BufferedTableItem.  
 * TableCellImpl is stored in and accessed by TableRowCore.
 * Drawing control gets passed to listeners.
 *
 * For plugins, this object is the implementation to TableCell.
 *
 * This object is needed to split core code from plugin code.
 */
public class TableCellImpl 
       implements TableCellCore
{
	private static final LogIDs LOGID = LogIDs.GUI;
  private TableRowCore tableRow;
  private Comparable sortValue;
  private boolean bSortValueIsText = true;
  private BufferedTableItem bufferedTableItem;
  private ArrayList refreshListeners;
  private ArrayList disposeListeners;
  private ArrayList tooltipListeners;
	private ArrayList cellMouseListeners;
  private TableColumnCore tableColumn;
  private boolean valid;
  private int refreshErrLoopCount;
  private int tooltipErrLoopCount;
  private int loopFactor;
  private Object oToolTip;
  /**
   * For refreshing, this flag manages whether the row is actually up to date.
   * 
   * We don't update any visuals while the row isn't visible.  But, validility
   * does get set to true so that the cell isn't forced to refresh every
   * cycle when not visible.  (We can't just never call refresh when the row
   * is not visible, as refresh also sets the sort value)
   *  
   * When the row does become visible, we have to invalidate the row so
   * that the row will set its visuals again (this time, actually
   * updating a viewable object).
   */
	private boolean bIsUpToDate = true;
	
	private boolean bDisposed = false;
	
	private boolean bMustRefresh = false;
	
	public boolean bDebug = false;
  
  private AEMonitor 	this_mon 	= new AEMonitor( "TableCell" );

  private static final String CFG_PAINT = "GUI_SWT_bAlternateTablePainting";
  private static boolean bAlternateTablePainting;
  
  static {
  	COConfigurationManager.addAndFireParameterListener(CFG_PAINT,
				new ParameterListener() {
					public void parameterChanged(String parameterName) {
						bAlternateTablePainting = COConfigurationManager
								.getBooleanParameter(CFG_PAINT);
					}
				});
  }

  /**
   * Initialize
   *  
   * @param _tableRow
   * @param _tableColumn
   * @param position
   */
  public TableCellImpl(TableRowCore _tableRow, TableColumnCore _tableColumn,
                       int position) {
    this.tableColumn = _tableColumn;
    this.tableRow = _tableRow;
    valid = false;
    refreshErrLoopCount = 0;
    tooltipErrLoopCount = 0;
    loopFactor = 0;

    BufferedTableRow bufRow = (BufferedTableRow)tableRow;
    if (tableColumn.getType() == TableColumnCore.TYPE_GRAPHIC) {
    	if (bAlternateTablePainting) {
	      bufferedTableItem = new BufferedGraphicTableItem2(bufRow, position) {
	        public void refresh() {
	          TableCellImpl.this.refresh();
	        }
	        public void invalidate() {
	          TableCellImpl.this.valid = false;
	        }
	      };
	    } else {
	      bufferedTableItem = new BufferedGraphicTableItem1(bufRow, position) {
	        public void refresh() {
	          TableCellImpl.this.refresh();
	        }
	        public void invalidate() {
	          TableCellImpl.this.valid = false;
	        }
	      };
	    }
    	setOrientationViaColumn();
    } else {
      bufferedTableItem = new BufferedTableItem(bufRow, position) {
        public void refresh() {
          TableCellImpl.this.refresh();
        }
        public void invalidate() {
          TableCellImpl.this.valid = false;
        }
      };
    }

    tableColumn.invokeCellAddedListeners(this);
    
    //bDebug = (position == 1) && tableColumn.getTableID().equalsIgnoreCase("Peers");
  }

  private void pluginError(Throwable e) {
    String sPosition = (bufferedTableItem == null) 
      ? "null" 
      : "" + bufferedTableItem.getPosition() + 
        " (" + bufferedTableItem.getColumnName() + ")";
    Logger.log(new LogEvent(LOGID, "Table Cell Plugin for Column #" + sPosition
				+ " generated an exception ", e));
  }
  
  private void checkCellForSetting() {
  	if (isDisposed())
  		throw new UIRuntimeException("Table Cell is disposed.");
  }
  
  /* Public API */
  ////////////////
  
  public Object getDataSource() {
    return tableRow.getDataSource(tableColumn.getUseCoreDataSource());
  }
  
  public TableColumn getTableColumn() {
    return tableColumn;
  }

  public TableRow getTableRow() {
    return tableRow;
  }

  public String getTableID() {
    return tableRow.getTableID();
  }
  
  public boolean isValid() {
    return valid;
  }
  
  public boolean setForeground(Color color) {
  	checkCellForSetting();

  	// Don't need to set when not visible
  	if (!tableRow.isVisible())
  		return false;

    return bufferedTableItem.setItemForeground(color);
  }
  
  public boolean setForeground(int red, int green, int blue) {
  	checkCellForSetting();

  	// Don't need to set when not visible
  	if (!tableRow.isVisible())
  		return false;

    return bufferedTableItem.setItemForeground(red, green, blue);
  }

  public boolean setText(String text) {
  	checkCellForSetting();
  	if (text == null)
  		text = "";
  	boolean bChanged = false;

  	if (bSortValueIsText && !text.equals(sortValue)) {
  		bChanged = true;
  		sortValue = text;
    	if (bDebug)
    		debug("Setting SortValue to text;");
  	}
  	
  	if (!tableRow.isVisible())
  		return false;
  	
    if (bufferedTableItem.setText(text) && !bSortValueIsText)
    	bChanged = true;

  	return bChanged;
  }
  
  public String getText() {
  	if (bSortValueIsText && sortValue instanceof String)
  		return (String)sortValue;
    return bufferedTableItem.getText();
  }

  public boolean isShown() {
    return bufferedTableItem.isShown();
  }
  
  public boolean setSortValue(Comparable valueToSort) {
  	checkCellForSetting();

    if (sortValue == valueToSort)
      return false;

    if (bSortValueIsText) {
      bSortValueIsText = false;
    	if (sortValue instanceof String)
	    	// Make sure text is actually in the cell (it may not have been if
	      // cell wasn't created at the time of setting)
	      setText((String)sortValue);
    }

  	if (bDebug)
  		debug("Setting SortValue to "
					+ ((valueToSort == null) ? "null" : valueToSort.getClass().getName()));
    sortValue = valueToSort;

    return true;
  }
  
  public boolean setSortValue(long valueToSort) {
  	checkCellForSetting();

		if ((sortValue instanceof Long)
				&& ((Long) sortValue).longValue() == valueToSort)
			return false;

		return setSortValue(new Long(valueToSort));
  }
  
  public boolean setSortValue( float valueToSort ) {
  	checkCellForSetting();

		if (sortValue instanceof Float
				&& ((Float) sortValue).floatValue() == valueToSort)
			return false;

		return setSortValue(new Float(valueToSort));
  }

  public Comparable getSortValue() {
  	if (bDebug)
			debug("GetSortValue;"
					+ (sortValue == null ? "null" : sortValue.getClass().getName() + ";"
							+ sortValue.toString()));

    if (sortValue == null) {
      if (bufferedTableItem != null)
        return bufferedTableItem.getText();
      return "";
    }
    return sortValue;
  }
  
  public void setToolTip(Object tooltip) {
    oToolTip = tooltip;
  }

  public Object getToolTip() {
    return oToolTip;
  }

	public boolean isDisposed() {
		return bDisposed;
	}
  
  /* Start TYPE_GRAPHIC Functions */

	public Point getSize() {
    if (!(bufferedTableItem instanceof BufferedGraphicTableItem))
      return null;
    return ((BufferedGraphicTableItem)bufferedTableItem).getSize();
  }

  public int getWidth() {
    if (!(bufferedTableItem instanceof BufferedGraphicTableItem))
      return -1;
    Point pt = ((BufferedGraphicTableItem)bufferedTableItem).getSize();
    if (pt == null)
      return -1;
    return pt.x;
  }

  public int getHeight() {
    if (!(bufferedTableItem instanceof BufferedGraphicTableItem))
      return -1;
    Point pt = ((BufferedGraphicTableItem)bufferedTableItem).getSize();
    if (pt == null)
      return -1;
    return pt.y;
  }

  public boolean setGraphic(Image img) {
  	checkCellForSetting();

    if (!(bufferedTableItem instanceof BufferedGraphicTableItem))
      return false;

    return ((BufferedGraphicTableItem)bufferedTableItem).setGraphic(img);
  }

  public boolean setGraphic(Graphic img) {
  	checkCellForSetting();

    if (!(bufferedTableItem instanceof BufferedGraphicTableItem))
      return false;

    if (img == null)
      return ((BufferedGraphicTableItem)bufferedTableItem).setGraphic(null);

    if (img instanceof GraphicSWT){
    	Image imgSWT = ((GraphicSWT)img).getImage();
    	return ((BufferedGraphicTableItem)bufferedTableItem).setGraphic(imgSWT);
    }
    
    if (img instanceof UISWTGraphic){
    	Image imgSWT = ((UISWTGraphic)img).getImage();
    	return ((BufferedGraphicTableItem)bufferedTableItem).setGraphic(imgSWT);
    }
    
    return( false );
  }

  public Graphic getGraphic() {
    if (!(bufferedTableItem instanceof BufferedGraphicTableItem))
      return null;
    Image img = ((BufferedGraphicTableItem)bufferedTableItem).getGraphic();
    return new UISWTGraphicImpl(img);
  }

  public Image getGraphicSWT() {
    if (!(bufferedTableItem instanceof BufferedGraphicTableItem))
      return null;
    return ((BufferedGraphicTableItem)bufferedTableItem).getGraphic();
  }

  public void setFillCell(boolean bFillCell) {
  	checkCellForSetting();

    if (!(bufferedTableItem instanceof BufferedGraphicTableItem))
      return;
    
    if (bFillCell)
    	((BufferedGraphicTableItem)bufferedTableItem).orientation = SWT.FILL;
    else
    	setOrientationViaColumn();
  }

	public void setMarginHeight(int height) {
  	checkCellForSetting();

    if (!(bufferedTableItem instanceof BufferedGraphicTableItem))
      return;
    ((BufferedGraphicTableItem)bufferedTableItem).marginHeight = height;
  }