/** Loads the target file into the components text area, using the indicated character set. */
protected void loadFile() {
// do not reload if file has changed
if (saveAction.isEnabled()) return;
File file = getTargetFile().getFile();
Reader reader = null;
Cursor originalcursor = this.getOwner().getCursor();
this.getOwner().setCursor(Cursor.getPredefinedCursor(Cursor.WAIT_CURSOR));
try {
reader = new InputStreamReader(new FileInputStream(file), getCharset());
textArea.read(reader, file);
textArea.setCaretPosition(0);
wireupSaveButton();
lineCounter.setLineCount(1);
undoManager = new UndoHistory();
undoManager.registerUndoHistory(textArea);
} catch (IOException iox) {
logger.error("IOException displaying file " + file.getPath() + ": " + iox.getMessage());
textArea.setText("");
textArea.setForeground(Color.RED);
textArea.setText(iox.getMessage());
} catch (OutOfMemoryError omu) {
logger.error(omu.getClass().getName() + ": " + omu.getMessage(), omu);
textArea.setText("");
textArea.setForeground(Color.RED);
String message = getLocalizer().localize("message.document-too-large-for-display");
textArea.setText(message + "\n(OutOfMemoryError: " + omu.getMessage() + ")");
} catch (Exception x) {
String message = x.getClass().getName() + ": " + x.getMessage();
logger.error(message, x);
textArea.setText("");
textArea.setForeground(Color.RED);
textArea.setText(message);
} finally {
this.getOwner().setCursor(originalcursor);
if (reader != null)
try {
reader.close();
} catch (IOException iox) {
logger.warn("IOException closing stream: " + iox.getMessage());
}
}
}
