switch(event.id) {
// Most components generate ACTION_EVENT
// We test the target field to find out which component.
case Event.ACTION_EVENT:
if (event.target == textfield) {
textarea.setText("Your name is: " + (String)event.arg + "\n");
}
else if (event.target == choice) {
textarea.setText("Your favorite color is: " +
(String) event.arg + "\n");
}
else if ((event.target == checkboxes[0]) ||
(event.target == checkboxes[1]) ||
(event.target == checkboxes[2])) {
textarea.setText("Your favorite flavor is: " +
checkbox_group.getCurrent().getLabel() + "\n");
}
else if (event.target == list) {
textarea.setText("You double-clicked on: " +
(String)event.arg + "\n");
}
else if (event.target == okay) {
textarea.setText("Okay button clicked.\n");
}
else if (event.target == cancel) {
textarea.setText("Cancel button clicked.\n");
}
else if (event.target instanceof MenuItem) {
// Since we didn't save references to each of the menu objects,
// we check which one was pressed by comparing labels.
// Note that we respond to these menu items by
// popping up dialog boxes.
if (((String)event.arg).equals("Quit")) {
YesNoDialog d = new ReallyQuitDialog(this, textarea);
d.show();
}
else if (((String)event.arg).equals("Open")) {
textarea.setText("You selected Open.\n");
// Use the dialog box created by our superclass.
file_dialog.pack(); // bug workaround
file_dialog.show(); // blocks until user selects a file
textarea.setText("You selected file: " +
file_dialog.getFile());
}
else if (((String)event.arg).equals("About")) {
InfoDialog d;
d = new InfoDialog(this, "About AWT Demo",
"This demo was written by David Flanagan\n" +
"Copyright (c) 1996 O'Reilly & Associates");
d.show();
textarea.setText("You selected About.\n");
}
}
else {
textarea.setText("Unknown action event.");
}
break;
// Double-clicking on a list generates an action event.
// But list selection and deselection are separate event types.
case Event.LIST_SELECT:
textarea.setText("You selected: " +
list.getItem(((Integer)event.arg).intValue()) + "\n");
break;
case Event.LIST_DESELECT:
textarea.setText("You deselected: " +
list.getItem(((Integer)event.arg).intValue()) + "\n");
break;
// These are some events pertaining to the window itself.
case Event.WINDOW_DESTROY:
textarea.setText("Window Destroy\n");
break;
case Event.WINDOW_ICONIFY:
textarea.setText("Window iconify\n");
break;
case Event.WINDOW_DEICONIFY:
textarea.setText("Window deiconify\n");
break;
case Event.WINDOW_MOVED:
textarea.setText("Window moved\n");
break;
// We print a message about each of these mouse and key events,
// but return false after so that they can still
// be properly handled by their correct recipient.
case Event.MOUSE_DOWN:
textarea.setText("Mouse down: [" + event.x + "," + event.y + "]\n");
return false;
case Event.MOUSE_UP:
textarea.setText("Mouse up: [" + event.x + "," + event.y + "]\n");
return false;
case Event.MOUSE_DRAG:
textarea.setText("Mouse drag: [" + event.x + "," + event.y + "]\n");
return false;
case Event.KEY_PRESS:
case Event.KEY_ACTION:
textarea.setText("Key press\n");
return false;
case Event.KEY_RELEASE:
case Event.KEY_ACTION_RELEASE:
textarea.setText("Key release\n");
return false;
// We ignore these event types.
case Event.GOT_FOCUS:
case Event.LOST_FOCUS:
case Event.MOUSE_ENTER:
case Event.MOUSE_EXIT:
case Event.MOUSE_MOVE:
return false;
// We shouldn't ever get this...
default:
textarea.setText("Unexpected Event type: " + event + "\n");
break;
}
return true;
