Class Selection

var someListener:Object = new Object();
someListener.onSetFocus = function () {
    // statements
}
Selection.addListener(someListener);

this.createTextField("one_txt", 1, 0, 0, 100, 22);
this.createTextField("two_txt", 2, 0, 25, 100, 22);
this.createTextField("three_txt", 3, 0, 50, 100, 22);
this.createTextField("four_txt", 4, 0, 75, 100, 22);

for (var i in this) {
    if (this[i] instanceof TextField) {
    this[i].border = true;
    this[i].type = "input";
    }
}

this.createTextField("status_txt", this.getNextHighestDepth(), 200, 10, 300, 100);
status_txt.html = true;
status_txt.multiline = true;

var someListener:Object = new Object();
someListener.onSetFocus = function(oldFocus, newFocus) {
    status_txt.htmlText = "<b>setFocus triggered</b>";
    status_txt.htmlText += "<textformat tabStops='[20,80]'>";
    status_txt.htmlText += "&nbsp;\toldFocus:\t"+oldFocus;
    status_txt.htmlText += "&nbsp;\tnewFocus:\t"+newFocus;
    status_txt.htmlText += "&nbsp;\tgetFocus:\t"+Selection.getFocus();
    status_txt.htmlText += "</textformat>";
};
Selection.addListener(someListener);

this.createTextField("one_txt", 99, 10, 10, 200, 20);
this.createTextField("two_txt", 100, 10, 50, 200, 20);
one_txt.border = true;
one_txt.type = "input";
two_txt.border = true;
two_txt.type = "input";

var focusListener:Object = new Object();
focusListener.onSetFocus = function(oldFocus_txt, newFocus_txt) {
    oldFocus_txt.border = false;
    newFocus_txt.border = true;
};
Selection.addListener(focusListener);

this.createTextField("output_txt", this.getNextHighestDepth(), 0, 0, 300, 200);
output_txt.multiline = true;
output_txt.wordWrap = true;
output_txt.border = true;
output_txt.type = "input";
output_txt.text = "Enter your text here";
var my_cm:ContextMenu = new ContextMenu();
my_cm.customItems.push(new ContextMenuItem("Uppercase...", doUppercase));
function doUppercase():Void {
    var startIndex:Number = Selection.getBeginIndex();
    var endIndex:Number = Selection.getEndIndex();
    var stringToUppercase:String = output_txt.text.substring(startIndex, endIndex);
    output_txt.replaceText(startIndex, endIndex, stringToUppercase.toUpperCase());
}
output_txt.menu = my_cm;

this.createTextField("pos_txt", this.getNextHighestDepth(), 50, 20, 100, 22);
this.createTextField("content_txt", this.getNextHighestDepth(), 50, 50, 400, 300);
content_txt.border = true;
content_txt.type = "input";
content_txt.wordWrap = true;
content_txt.multiline = true;
content_txt.onChanged = getCaretPos;

var keyListener:Object = new Object();
keyListener.onKeyUp = getCaretPos;
Key.addListener(keyListener);

var mouseListener:Object = new Object();
mouseListener.onMouseUp = getCaretPos;
Mouse.addListener(mouseListener);

function getCaretPos() {
    pos_txt.text = Selection.getCaretIndex();
}

// define the function which converts the selected text in an instance,
// and convert the string to upper or lower case.
function convertCase(target, menuItem) {
    var beginIndex:Number = Selection.getBeginIndex();
    var endIndex:Number = Selection.getEndIndex();
    var tempString:String;
    // make sure that text is actually selected.
    if (beginIndex>-1 && endIndex>-1) {
    // set the temporary string to the text before the selected text.
    tempString = target.text.slice(0, beginIndex);
    switch (menuItem.caption) {
    case 'Uppercase...' :
        // if the user selects the "Uppercase..." context menu item,
        // convert the selected text to upper case.
        tempString += target.text.substring(beginIndex, endIndex).toUpperCase();
        break;
    case 'Lowercase...' :
        tempString += target.text.substring(beginIndex, endIndex).toLowerCase();
        break;
    }
    // append the text after the selected text to the temporary string.
    tempString += target.text.slice(endIndex);
    // set the text in the target text field to the contents of the temporary string.
    target.text = tempString;
    }
}

var focus_ta:mx.controls.TextArea;
my_mc.onRelease = function() {};
my_btn.onRelease = function() {};

var keyListener:Object = new Object();
keyListener.onKeyDown = function() {
    if (Key.isDown(Key.SPACE)) {
    focus_ta.text = Selection.getFocus()+newline+focus_ta.text;
    }
};
Key.addListener(keyListener);

this.createTextField("one_txt", 1, 0, 0, 100, 22);
this.createTextField("two_txt", 2, 0, 25, 100, 22);
this.createTextField("three_txt", 3, 0, 50, 100, 22);
this.createTextField("four_txt", 4, 0, 75, 100, 22);

for (var i in this) {
    if (this[i] instanceof TextField) {
    this[i].border = true;
    this[i].type = "input";
    }
}

var selectionListener:Object = new Object();
selectionListener.onSetFocus = function(oldFocus, newFocus) {
    trace("Focus shifted from "+oldFocus+" to "+newFocus);
};
Selection.addListener(selectionListener);

remove_btn.onRelease = function() {
    trace("removeListener invoked");
    Selection.removeListener(selectionListener);
};

this.createTextField("status_txt", this.getNextHighestDepth(), 100, 70, 100, 22);
this.createTextField("username_txt", this.getNextHighestDepth(), 100, 100, 100, 22);
this.createTextField("password_txt", this.getNextHighestDepth(), 100, 130, 100, 22);
this.createEmptyMovieClip("submit_mc", this.getNextHighestDepth());
submit_mc.createTextField("submit_txt", this.getNextHighestDepth(), 100, 160, 100, 22);
submit_mc.submit_txt.autoSize = "center";
submit_mc.submit_txt.text = "Submit";
submit_mc.submit_txt.border = true;
submit_mc.onRelease = checkForm;
username_txt.border = true;
password_txt.border = true;
username_txt.type = "input";
password_txt.type = "input";
password_txt.password = true;
Selection.setFocus("username_txt");
//
function checkForm():Boolean {
    if (username_txt.text.length == 0) {
    status_txt.text = "fill in username";
    Selection.setFocus("username_txt");
    return false;
    }
    if (password_txt.text.length == 0) {
    status_txt.text = "fill in password";
    Selection.setFocus("password_txt");
    return false;
    }
    status_txt.text = "success!";
    Selection.setFocus(null);
    return true;
}

this.createTextField("myText_txt", 99, 10, 10, 200, 30);
myText_txt.text = "this is my text";
this.onEnterFrame = function () {
    Selection.setFocus("myText_txt");
    Selection.setSelection(0, 3);
    delete this.onEnterFrame;
}

this.createTextField("myText_txt", 99, 10, 10, 200, 30);
myText_txt.text = "this is my text";
this.onEnterFrame = function () {
    Selection.setFocus("myText_txt");
    Selection.setSelection(0, 1);
    delete this.onEnterFrame;
}