LzKeys (as2)

LzKeys (as2)
Prev	Events	Next

Name

LzKeys (as2) — Keyboard input service.

Synopsis

JavaScript: LzKeys
Type: Object
Access: public
Runtimes: as2
Topic: LFC.Events
Declared in: WEB-INF/lps/lfc/services/platform/swf/LzKeys.as

Description

LzKeys is a service that provides key handling messages. Objects can also register callbacks to be sent when specific key combinitions are down.

Here is a simple example:

Example 11. LzKeys

 <canvas height="140" debug="true">
   <handler name="onkeydown" reference="LzKeys" args="k">
     Debug.write("key " + k + " down");
   </handler>
   <handler name="onkeyup" reference="LzKeys" args="k">
     Debug.write("key " + k + " up");
   </handler>
   <method name="pressA">
     Debug.write("A pressed");
   </method>
   <handler name="oninit">
     del = new LzDelegate(this, "pressA");
     LzKeys.callOnKeyCombo(del, ["A"]);
   </handler> 
 </canvas>

Details

Static Properties (5)

downKeysArray: static public var downKeysArray : [Number];

An array of currently pressed key codes.
downKeysHash: static public var downKeysHash : Object = { ... };

A hash where each of the keys that is currently down on the keyboard is set to true.
keyCodes: static public var keyCodes : Object = { ... };

A hash that maps key names to key codes.
keycombos: static public var keycombos = { ... };
mousewheeldelta: static public var mousewheeldelta = 0.0;

Static Methods (8)

callOnKeyCombo()

static public function callOnKeyCombo(d : LzDelegate, kCArr);

Instructs the service to call the given delegate whenever the given key combination is pressed. The names for recognized special keys are (case-insensitive):

numbpad0
numbpad1
numbpad2
numbpad3
numbpad4
numbpad5
numbpad6
numbpad7
numbpad8
numbpad9
multiply
enter
subtract
decimal
divide
f1
f2
f3
f4
f5
f6
f7
f8
f9
f10
f11
f12
backspace
tab
clear
enter
shift
control
alt
capslock
esc
spacebar
pageup
pagedown
end
home
leftarrow
uparrow
rightarrow
downarrow
insert
help
numlock
add
delete
0
1
2
3
4
5
6
7
8
9
[
@
#
$
%
^
&
*
*
(
)
;
:
=
+
-
_
/
?
~
[
{
\
|
]
}
"
'

enableEnter()

static private function enableEnter(onroff);

getDownKeys()

static public function getDownKeys();

gotKeyDown()

static private function gotKeyDown(kC : Number, info : string);

Called whenever a key is pressed with the Flash keycode corresponding to the down key.

gotKeyUp()

static private function gotKeyUp(kC : Number);

Called whenever the a key is released with the Flash keycode corresponding to the up key.

isKeyDown()

static public function isKeyDown(k : String) : Boolean;

__keyEvent()

static private function __keyEvent(delta, k, type);

removeKeyComboCall()

static public function removeKeyComboCall(d : LzDelegate, kCArr);

Removes the request to call the delegate on the keycombo.

Static Events (3)

onkeydown (as2): static public event onkeydown;

event sent when a key is pressed; sent with keycode for key that was pressed.
onkeyup (as2): static public event onkeyup;

event sent whenever a key goes up; sent with keycode for key that was let go.
onmousewheeldelta (as2): static public event onmousewheeldelta;

JavaScript Synopsis

public var LzKeys = { ... };

Copyright © 2002-2007 Laszlo Systems, Inc. All Rights Reserved. Unauthorized use, duplication or distribution is strictly prohibited. This is the proprietary information of Laszlo Systems, Inc. Use is subject to license terms.