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TextEvent typedict
 
A TextEvent indicates that the value in a component, like a JTextField or TextArea, has changed. The fields in a TextEvent are:
id An Object that must be an int or String, that identifies the type of this event. A value that is a String must be the name of an event handler that can process this event. A value that is an int must be a number that the yoix.event.HandlerID dictionary associates with an event handler that can process this event.

In practice, id is only used when you build an event that gets handed to postEvent, and in that case the value assigned to id is almost always a String.

length An int that indicates the length of the change if it is greater than or equal to 0. A negative value, which is what an AWT textValueChanged event handler should always expect, means length contains no useful information.
offset An int that indicates the where the change happened if it is greater than or equal to 0. A negative value, which is what an AWT textValueChanged event handler should always expect, means offset contains no useful information.
type An int that provides additional information about the change, but only when its value is TEXTINSERT, or TEXTREMOVE, which are defined in yoix.awt and yoix.swing. A value of TEXTCHANGE, which is what an AWT textValueChanged event handler should always expect, means type contains no useful information.
JComboBox, JTextArea, JTextField, JTextPane, TextArea, and TextField are the only components that can receive TextEvents, but they only arrive if the component has defined a textValueChanged event handler. In the case of a JComboBox, the combobox needs to be editable.
 
 Event Handlers:   textValueChanged
 
 Example:   The program, 
import yoix.*.*;

Frame frame = {
    Array layout = {
        new TextArea {
            String tag = "textarea";
            int    edit = 1;

            textValueChanged(Event e) {
                printf("textValueChanged: %O\n", e);
                if (indexOf(text, "QUIT") >= 0)
                    exit(0);
            }
        }, CENTER
    };
};

frame.visible = TRUE;

TextEvent event = {
    String id = "textValueChanged";
};

printf("Posting: %O\n", event);
postEvent(event, frame.components.textarea);
prints 
Posting: Event[4:0]
    id=^"textValueChanged"
    length=-1
   >offset=-1
    type=0
textValueChanged: Event[4:0]
    id=900
    length=-1
   >offset=-1
    type=0
on standard output and then dumps all real textValueChanged events until you type QUIT somewhere in the TextArea.
 
 See Also:   ActionEvent, AdjustmentEvent, CaretEvent, ChangeEvent, ComponentEvent, DragGestureEvent, DragSourceEvent, DropTargetEvent, Event, FocusEvent, HyperlinkEvent, InvocationEvent, invokeLater, isDispatchThread, ItemEvent, KeyEvent, ListSelectionEvent, MouseEvent, MouseWheelEvent, PaintEvent, postEvent, TreeSelectionEvent, WindowEvent

 

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