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 An interface for embedding clients who wish to interact with
 the system-wide OS clipboard. Mozilla does not use a private
 clipboard, instead it places its data directly onto the system 
 clipboard. The webshell implements this interface.

 @status FROZEN
[scriptable, uuid(b8100c90-73be-11d2-92a5-00105a1b0d64)]
interface nsIClipboardCommands : nsISupports

Methods

 Returns whether we can copy an image's contents.

 @return <code>true</code> if an image is selected,
          <code>false</code> otherwise
boolean canCopyImageContents() 
 Returns whether we can copy an image location.

 @return <code>true</code> if an image is selected,
              <code>false</code> otherwise.
boolean canCopyImageLocation() 
 Returns whether we can copy a link location.

 @return <code>true</code> if a link is selected,
           <code>false</code> otherwise.
boolean canCopyLinkLocation() 
 Returns whether there is a selection and it is copyable.

 @return <code>true</code> if there is a selection,
          <code>false</code> otherwise.
boolean canCopySelection() 
 Returns whether there is a selection and it is not read-only.

 @return <code>true</code> if the current selection can be cut,
          <code>false</code> otherwise.
boolean canCutSelection() 
 Returns whether the current contents of the clipboard can be
 pasted and if the current selection is not read-only.

 @return <code>true</code> there is data to paste on the clipboard
          and the current selection is not read-only,
          <code>false</code> otherwise
boolean canPaste() 
 Copy the contents of the selected image.
void copyImageContents() 
 Copy the location of the selected image.
void copyImageLocation() 
 Copy the link location of the current selection (e.g.,
 the |href| attribute of a selected |a| tag).
void copyLinkLocation() 
 Copy the current selection onto the clipboard.
void copySelection() 
 Cut the current selection onto the clipboard.
void cutSelection() 
 Paste the contents of the clipboard into the current selection.
void paste() 
 Select the entire contents.
void selectAll() 
 Clear the current selection (if any). Insertion point ends up
 at beginning of current selection.
void selectNone()