Java java.awt.datatransfer Class Clipboard（JDK8）

Field Detail

• owner

  protected ClipboardOwner owner

• contents

  protected Transferable contents

Constructor Detail

• Clipboard

  public Clipboard(String name)

  Creates a clipboard object.

  See Also:

  Toolkit.getSystemClipboard()

Method Detail

• getName

  public String getName()

  Returns the name of this clipboard object.

  See Also:

  Toolkit.getSystemClipboard()

• setContents

  public void setContents(Transferable contents,
                          ClipboardOwner owner)

  Sets the current contents of the clipboard to the specified transferable object and registers the specified clipboard owner as the owner of the new contents.

  If there is an existing owner different from the argument owner, that owner is notified that it no longer holds ownership of the clipboard contents via an invocation of ClipboardOwner.lostOwnership() on that owner. An implementation of setContents() is free not to invoke lostOwnership() directly from this method. For example, lostOwnership() may be invoked later on a different thread. The same applies to FlavorListeners registered on this clipboard.

  The method throws IllegalStateException if the clipboard is currently unavailable. For example, on some platforms, the system clipboard is unavailable while it is accessed by another application.

  Parameters:

  contents - the transferable object representing the clipboard content

  owner - the object which owns the clipboard content

  Throws:

  IllegalStateException - if the clipboard is currently unavailable

  See Also:

  Toolkit.getSystemClipboard()

• getContents

  public Transferable getContents(Object requestor)

  Returns a transferable object representing the current contents of the clipboard. If the clipboard currently has no contents, it returns null. The parameter Object requestor is not currently used. The method throws IllegalStateException if the clipboard is currently unavailable. For example, on some platforms, the system clipboard is unavailable while it is accessed by another application.

  Parameters:

  requestor - the object requesting the clip data (not used)

  Returns:

  the current transferable object on the clipboard

  Throws:

  IllegalStateException - if the clipboard is currently unavailable

  See Also:

  Toolkit.getSystemClipboard()

• getAvailableDataFlavors

  public DataFlavor[] getAvailableDataFlavors()

  Returns an array of DataFlavors in which the current contents of this clipboard can be provided. If there are no DataFlavors available, this method returns a zero-length array.

  Returns:

  an array of DataFlavors in which the current contents of this clipboard can be provided

  Throws:

  IllegalStateException - if this clipboard is currently unavailable

  Since:

  1.5

• isDataFlavorAvailable

  public boolean isDataFlavorAvailable(DataFlavor flavor)

  Returns whether or not the current contents of this clipboard can be provided in the specified DataFlavor.

  Parameters:

  flavor - the requested DataFlavor for the contents

  Returns:

  true if the current contents of this clipboard can be provided in the specified DataFlavor; false otherwise

  Throws:

  NullPointerException - if flavor is null

  IllegalStateException - if this clipboard is currently unavailable

  Since:

  1.5

• getData

  public Object getData(DataFlavor flavor)
                 throws UnsupportedFlavorException,
                        IOException

  Returns an object representing the current contents of this clipboard in the specified DataFlavor. The class of the object returned is defined by the representation class of flavor.

  Parameters:

  flavor - the requested DataFlavor for the contents

  Returns:

  an object representing the current contents of this clipboard in the specified DataFlavor

  Throws:

  NullPointerException - if flavor is null

  IllegalStateException - if this clipboard is currently unavailable

  UnsupportedFlavorException - if the requested DataFlavor is not available

  IOException - if the data in the requested DataFlavor can not be retrieved

  Since:

  1.5

  See Also:

  DataFlavor.getRepresentationClass()

• addFlavorListener

  public void addFlavorListener(FlavorListener listener)

  Registers the specified FlavorListener to receive FlavorEvents from this clipboard. If listener is null, no exception is thrown and no action is performed.

  Parameters:

  listener - the listener to be added

  Since:

  1.5

  See Also:

  removeFlavorListener(java.awt.datatransfer.FlavorListener), getFlavorListeners(), FlavorListener, FlavorEvent

• removeFlavorListener

  public void removeFlavorListener(FlavorListener listener)

  Removes the specified FlavorListener so that it no longer receives FlavorEvents from this Clipboard. This method performs no function, nor does it throw an exception, if the listener specified by the argument was not previously added to this Clipboard. If listener is null, no exception is thrown and no action is performed.

  Parameters:

  listener - the listener to be removed

  Since:

  1.5

  See Also:

  addFlavorListener(java.awt.datatransfer.FlavorListener), getFlavorListeners(), FlavorListener, FlavorEvent

• getFlavorListeners

  public FlavorListener[] getFlavorListeners()

  Returns an array of all the FlavorListeners currently registered on this Clipboard.

  Returns:

  all of this clipboard's FlavorListeners or an empty array if no listeners are currently registered

  Since:

  1.5

  See Also:

  addFlavorListener(java.awt.datatransfer.FlavorListener), removeFlavorListener(java.awt.datatransfer.FlavorListener), FlavorListener, FlavorEvent