The action that is executed by default if
a key typed event is received and there
is no keymap entry. There is a variation across
different VM's in what gets sent as a key typed
event, and this action tries to filter out the undesired
events. This filters the control characters and those
with the ALT modifier. It allows Control-Alt sequences
through as these form legitimate unicode characters on
some PC keyboards.
If the event doesn't get filtered, it will try to insert
content into the text editor. The content is fetched
from the command string of the ActionEvent. The text
entry is done through the replaceSelection
method on the target text component. This is the
action that will be fired for most text entry tasks.
Serialized objects of this class will not be compatible with
future Swing releases. The current serialization support is appropriate
for short term storage or RMI between applications running the same
version of Swing. A future release of Swing will provide support for
long term persistence.
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