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The Java Developers Almanac 1.4 |
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e974. Using a Position in a JTextComponentA position marks a location between two characters in aJTextComponent. The position attempts to remain between the same
two characters despite edits to the JTextComponent. For example,
if the position is at location 10 and the first character is deleted,
the new location of the position becomes 9.
When text is inserted at the position, a position's bias
determines whether it remains in the same location or is
moved to the end of the new text. By default, JTextComponent textComp = new JTextArea();
Document doc = textComp.getDocument();
Position p = null;
try {
// Create a right-bias Position object
int location = 3;
p = doc.createPosition(location);
} catch (BadLocationException e) {
}
// Retrieve the current location of the Position object
int location = p.getOffset();
e969. Retrieving All the Text from a JTextComponent Efficiently e970. Modifying Text in a JTextComponent e971. Asynchronously Reading the Contents of a Visible JTextComponent e972. Finding Word Boundaries in a JTextComponent e973. Retrieving the Visible Lines in a JTextComponent e975. Limiting the Capacity of a JTextComponent e976. Enabling Text-Dragging on a JTextComponent e977. Sharing a Document Between JTextComponents e978. Enumerating All the Views in a JTextComponent
© 2002 Addison-Wesley. |