Regalamiunsorriso/rus/WEB-INF/lib/activation1.1.1_src/javax/activation/DataHandler.java

package javax.activation;

import java.awt.datatransfer.DataFlavor;
import java.awt.datatransfer.Transferable;
import java.awt.datatransfer.UnsupportedFlavorException;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.PipedInputStream;
import java.io.PipedOutputStream;
import java.net.URL;

public class DataHandler implements Transferable {
  private DataSource dataSource = null;
  
  private DataSource objDataSource = null;
  
  private Object object = null;
  
  private String objectMimeType = null;
  
  private CommandMap currentCommandMap = null;
  
  private static final DataFlavor[] emptyFlavors = new DataFlavor[0];
  
  private DataFlavor[] transferFlavors = emptyFlavors;
  
  private DataContentHandler dataContentHandler = null;
  
  private DataContentHandler factoryDCH = null;
  
  private static DataContentHandlerFactory factory = null;
  
  private DataContentHandlerFactory oldFactory = null;
  
  private String shortType = null;
  
  public DataHandler(DataSource paramDataSource) {
    this.dataSource = paramDataSource;
    this.oldFactory = factory;
  }
  
  public DataHandler(Object paramObject, String paramString) {
    this.object = paramObject;
    this.objectMimeType = paramString;
    this.oldFactory = factory;
  }
  
  public DataHandler(URL paramURL) {
    this.dataSource = new URLDataSource(paramURL);
    this.oldFactory = factory;
  }
  
  private synchronized CommandMap getCommandMap() {
    if (this.currentCommandMap != null)
      return this.currentCommandMap; 
    return CommandMap.getDefaultCommandMap();
  }
  
  public DataSource getDataSource() {
    if (this.dataSource == null) {
      if (this.objDataSource == null)
        this.objDataSource = new DataHandlerDataSource(this); 
      return this.objDataSource;
    } 
    return this.dataSource;
  }
  
  public String getName() {
    if (this.dataSource != null)
      return this.dataSource.getName(); 
    return null;
  }
  
  public String getContentType() {
    if (this.dataSource != null)
      return this.dataSource.getContentType(); 
    return this.objectMimeType;
  }
  
  public InputStream getInputStream() throws IOException {
    InputStream inputStream = null;
    if (this.dataSource != null) {
      inputStream = this.dataSource.getInputStream();
    } else {
      DataContentHandler dataContentHandler1 = getDataContentHandler();
      if (dataContentHandler1 == null)
        throw new UnsupportedDataTypeException("no DCH for MIME type " + getBaseType()); 
      if (dataContentHandler1 instanceof ObjectDataContentHandler && (
        (ObjectDataContentHandler)dataContentHandler1).getDCH() == null)
        throw new UnsupportedDataTypeException("no object DCH for MIME type " + getBaseType()); 
      final DataContentHandler fdch = dataContentHandler1;
      final PipedOutputStream pos = new PipedOutputStream();
      PipedInputStream pipedInputStream = new PipedInputStream(pos);
      new Thread(new Runnable() {
            public void run() {
              try {
                fdch.writeTo(DataHandler.this.object, DataHandler.this.objectMimeType, pos);
              } catch (IOException e) {
              
              } finally {
                try {
                  pos.close();
                } catch (IOException e) {}
              } 
            }
          },  "DataHandler.getInputStream").start();
      inputStream = pipedInputStream;
    } 
    return inputStream;
  }
  
  public void writeTo(OutputStream paramOutputStream) throws IOException {
    if (this.dataSource != null) {
      InputStream inputStream = null;
      byte[] arrayOfByte = new byte[8192];
      inputStream = this.dataSource.getInputStream();
      try {
        int i;
        while ((i = inputStream.read(arrayOfByte)) > 0)
          paramOutputStream.write(arrayOfByte, 0, i); 
      } finally {
        inputStream.close();
        inputStream = null;
      } 
    } else {
      DataContentHandler dataContentHandler = getDataContentHandler();
      dataContentHandler.writeTo(this.object, this.objectMimeType, paramOutputStream);
    } 
  }
  
  public OutputStream getOutputStream() throws IOException {
    if (this.dataSource != null)
      return this.dataSource.getOutputStream(); 
    return null;
  }
  
  public synchronized DataFlavor[] getTransferDataFlavors() {
    if (factory != this.oldFactory)
      this.transferFlavors = emptyFlavors; 
    if (this.transferFlavors == emptyFlavors)
      this.transferFlavors = getDataContentHandler().getTransferDataFlavors(); 
    return this.transferFlavors;
  }
  
  public boolean isDataFlavorSupported(DataFlavor paramDataFlavor) {
    DataFlavor[] arrayOfDataFlavor = getTransferDataFlavors();
    for (int i = 0; i < arrayOfDataFlavor.length; i++) {
      if (arrayOfDataFlavor[i].equals(paramDataFlavor))
        return true; 
    } 
    return false;
  }
  
  public Object getTransferData(DataFlavor paramDataFlavor) throws UnsupportedFlavorException, IOException {
    return getDataContentHandler().getTransferData(paramDataFlavor, this.dataSource);
  }
  
  public synchronized void setCommandMap(CommandMap paramCommandMap) {
    if (paramCommandMap != this.currentCommandMap || paramCommandMap == null) {
      this.transferFlavors = emptyFlavors;
      this.dataContentHandler = null;
      this.currentCommandMap = paramCommandMap;
    } 
  }
  
  public CommandInfo[] getPreferredCommands() {
    if (this.dataSource != null)
      return getCommandMap().getPreferredCommands(getBaseType(), this.dataSource); 
    return getCommandMap().getPreferredCommands(getBaseType());
  }
  
  public CommandInfo[] getAllCommands() {
    if (this.dataSource != null)
      return getCommandMap().getAllCommands(getBaseType(), this.dataSource); 
    return getCommandMap().getAllCommands(getBaseType());
  }
  
  public CommandInfo getCommand(String paramString) {
    if (this.dataSource != null)
      return getCommandMap().getCommand(getBaseType(), paramString, this.dataSource); 
    return getCommandMap().getCommand(getBaseType(), paramString);
  }
  
  public Object getContent() throws IOException {
    if (this.object != null)
      return this.object; 
    return getDataContentHandler().getContent(getDataSource());
  }
  
  public Object getBean(CommandInfo paramCommandInfo) {
    Object object = null;
    try {
      ClassLoader classLoader = null;
      classLoader = SecuritySupport.getContextClassLoader();
      if (classLoader == null)
        classLoader = getClass().getClassLoader(); 
      object = paramCommandInfo.getCommandObject(this, classLoader);
    } catch (IOException e) {
    
    } catch (ClassNotFoundException e) {}
    return object;
  }
  
  private synchronized DataContentHandler getDataContentHandler() {
    if (factory != this.oldFactory) {
      this.oldFactory = factory;
      this.factoryDCH = null;
      this.dataContentHandler = null;
      this.transferFlavors = emptyFlavors;
    } 
    if (this.dataContentHandler != null)
      return this.dataContentHandler; 
    String str = getBaseType();
    if (this.factoryDCH == null && factory != null)
      this.factoryDCH = factory.createDataContentHandler(str); 
    if (this.factoryDCH != null)
      this.dataContentHandler = this.factoryDCH; 
    if (this.dataContentHandler == null)
      if (this.dataSource != null) {
        this.dataContentHandler = getCommandMap().createDataContentHandler(str, this.dataSource);
      } else {
        this.dataContentHandler = getCommandMap().createDataContentHandler(str);
      }  
    if (this.dataSource != null) {
      this.dataContentHandler = new DataSourceDataContentHandler(this.dataContentHandler, this.dataSource);
    } else {
      this.dataContentHandler = new ObjectDataContentHandler(this.dataContentHandler, this.object, this.objectMimeType);
    } 
    return this.dataContentHandler;
  }
  
  private synchronized String getBaseType() {
    if (this.shortType == null) {
      String str = getContentType();
      try {
        MimeType mimeType = new MimeType(str);
        this.shortType = mimeType.getBaseType();
      } catch (MimeTypeParseException e) {
        this.shortType = str;
      } 
    } 
    return this.shortType;
  }
  
  public static synchronized void setDataContentHandlerFactory(DataContentHandlerFactory paramDataContentHandlerFactory) {
    if (factory != null)
      throw new Error("DataContentHandlerFactory already defined"); 
    SecurityManager securityManager = System.getSecurityManager();
    if (securityManager != null)
      try {
        securityManager.checkSetFactory();
      } catch (SecurityException e) {
        if (DataHandler.class.getClassLoader() != paramDataContentHandlerFactory.getClass().getClassLoader())
          throw e; 
      }  
    factory = paramDataContentHandlerFactory;
  }
}