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java.awt.datatransfer
Class Clipboard
java.lang.Object
java.awt.datatransfer.Clipboard
-
public class
Clipboard
-
extends
Object
A class
that
which
implements a mechanism to transfer data using cut/copy/paste operations.
FlavorListener
s may be registered on an instance of the Clipboard class to be notified about changes to the set of
DataFlavor
s available on this clipboard (see
addFlavorListener(java.awt.datatransfer.FlavorListener)
).
-
See Also:
-
Toolkit.getSystemClipboard()
,
Toolkit.getSystemSelection()
Field Summary
|
protected
Transferable
|
contents
|
protected
ClipboardOwner
|
owner
|
Method Summary
|
void
|
addFlavorListener
(
FlavorListener
Registers the specified FlavorListener to receive FlavorEvents from this clipboard.
|
DataFlavor
|
getAvailableDataFlavors
()
Returns an array of DataFlavors in which the current contents of this clipboard can be provided.
|
Transferable
|
getContents
(
Object
requestor)
Returns a transferable object representing the current contents of the clipboard. |
Object
|
getData
(
DataFlavor
Returns an object representing the current contents of this clipboard in the specified DataFlavor.
|
FlavorListener
|
getFlavorListeners
()
Returns an array of all the FlavorListeners currently registered on this Clipboard.
|
String
|
getName
()
Returns the name of this clipboard object. |
boolean
|
isDataFlavorAvailable
(
DataFlavor
Returns whether or not the current contents of this clipboard can be provided in the specified DataFlavor.
|
void
|
removeFlavorListener
(
FlavorListener
Removes the specified FlavorListener so that it no longer receives FlavorEvents from this Clipboard.
|
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. |
Methods inherited from class java.lang.
Object
|
clone
,
equals
,
finalize
,
getClass
,
hashCode
,
notify
,
notifyAll
,
toString
,
wait
,
wait
,
wait
|
owner
protected ClipboardOwner owner
contents
protected Transferable contents
Clipboard
public Clipboard(String name)
-
Creates a clipboard object.
-
See Also:
-
Toolkit.getSystemClipboard()
getName
public String getName()
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Returns the name of this clipboard object.
-
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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 registered, that owner is notified that it no longer holds ownership of the clipboard contents. 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.
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
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owner - the object which owns the clipboard content
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Throws:
-
IllegalStateException
- if the clipboard is currently unavailable
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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)
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Returns:
-
the current transferable object on the clipboard
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Throws:
-
IllegalStateException
- if the clipboard is currently unavailable
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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.
-
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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.
-
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Parameters:
-
flavor - the requested DataFlavor for the contents
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Returns:
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true if the current contents of this clipboard can be provided in the specified DataFlavor; false otherwise
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Throws:
-
NullPointerException
- if flavor is null
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IllegalStateException
- if this clipboard is currently unavailable
-
Since:
-
1.5
getData
public ObjectgetData ( 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.
-
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Parameters:
-
flavor - the requested DataFlavor for the contents
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Returns:
-
an object representing the current contents of this clipboard in the specified DataFlavor
-
Throws:
-
NullPointerException
- if flavor is null
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IllegalStateException
- if this clipboard is currently unavailable
-
UnsupportedFlavorException
- if the requested DataFlavor is not available
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IOException
- if the data in the requested DataFlavor can not be retrieved
-
Since:
-
1.5
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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.
-
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Parameters:
-
listener - the listener to be added
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Since:
-
1.5
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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.
-
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Parameters:
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listener - the listener to be removed
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Since:
-
1.5
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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.
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Returns:
-
all of this clipboard's FlavorListeners or an empty array if no listeners are currently registered
-
Since:
-
1.5
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See Also:
-
addFlavorListener(java.awt.datatransfer.FlavorListener)
,
removeFlavorListener(java.awt.datatransfer.FlavorListener)
,
FlavorListener
,
FlavorEvent