private void onCreateNewAuctionClicked() {
try {
int startingPrice;
String description = txtDescription.getText();
if (txtStartingPrice.getText().equals("")) {
startingPrice = 0;
} else {
startingPrice = Integer.parseInt(txtStartingPrice.getText());
}
// Get a reference to an inactive auction from the auction manager.
String auctionRef = auctionFactoryImpl.getInactiveAuction();
// resolve the Object Reference in Naming
Auction auctionImpl = AuctionHelper.narrow(ncRef.resolve_str(auctionRef));
// Put an item up for sale
auctionImpl.offerItem(userName, description, startingPrice);
// Update the auction lists
updateAuctionLists(false);
appletDisplay("Started new auction");
} catch (NumberFormatException e1) {
appletDisplay("Invalid starting price");
} catch (AuctionFailure e2) {
appletDisplay(e2.description);
} catch (Exception e3) {
appletDisplay("Unable to create a new auction");
System.out.println("ERROR : " + e3);
e3.printStackTrace(System.out);
}
}
private void onLoginClicked() {
try {
if (usernameField.getText().equals("") || passwordField.getText().equals("")) {
throw new AuctionFailure(ErrorType.GENERIC_ERROR, "Invalid login info");
}
userName = usernameField.getText();
auctionFactoryImpl.authenticate(userName, passwordField.getText());
// Authentication was successful
appletDisplay(usernameField.getText() + " logged in");
// Enable functionality
btnRefresh.setEnabled(true);
sellList.setEnabled(true);
bidList.setEnabled(true);
btnCreateNewAuction.setEnabled(true);
txtDescription.setEnabled(true);
txtStartingPrice.setEnabled(true);
btnSellItem.setEnabled(true);
btnBid.setEnabled(true);
txtBidPrice.setEnabled(true);
loggedIn = true;
// Update the auction lists
updateAuctionLists(false);
} catch (AuctionFailure e) {
appletDisplay(e.description);
// Disable functionality
btnRefresh.setEnabled(false);
sellList.setEnabled(false);
bidList.setEnabled(false);
btnCreateNewAuction.setEnabled(false);
txtDescription.setEnabled(false);
txtStartingPrice.setEnabled(false);
btnSellItem.setEnabled(false);
btnBid.setEnabled(false);
txtBidPrice.setEnabled(false);
loggedIn = false;
} catch (Exception e1) {
appletDisplay("Unable to log in");
System.out.println("ERROR : " + e1);
e1.printStackTrace(System.out);
}
}
public synchronized void updateAuctionLists(boolean isBackgroundThread) {
AuctionsHolder sellerAuctions = new AuctionsHolder();
AuctionsHolder bidderAuctions = new AuctionsHolder();
IntHolder numSellerAuctions = new IntHolder();
IntHolder numBidderAuctions = new IntHolder();
try {
auctionFactoryImpl.getActiveAuctions(
userName, sellerAuctions, numSellerAuctions, bidderAuctions, numBidderAuctions);
int sellIndex = sellList.getSelectedIndex();
int bidIndex = bidList.getSelectedIndex();
// Clear the lists
sellListModel.clear();
bidListModel.clear();
// Re-populate the lists
for (int idx = 0; idx < numSellerAuctions.value; idx++) {
sellListModel.addElement(sellerAuctions.value[idx]);
}
for (int idx = 0; idx < numBidderAuctions.value; idx++) {
bidListModel.addElement(bidderAuctions.value[idx]);
}
// Set the selected list index back to what it was before if possible
if (sellIndex < sellListModel.getSize()) {
sellList.setSelectedIndex(sellIndex);
}
if (bidIndex < bidListModel.getSize()) {
bidList.setSelectedIndex(bidIndex);
}
if (!isBackgroundThread) {
appletDisplay("Updated auction lists");
}
} catch (AuctionFailure e) {
appletDisplay(e.description);
} catch (Exception e1) {
appletDisplay("Unable to update auction lists");
System.out.println("ERROR : " + e1);
e1.printStackTrace(System.out);
}
}
