Prevent double space from On-Screen Keyboard

[Sammybobo]

I am making a screen keyboard with a textfield that captures and writes the equivalent of the pressed key. I do not want the space or " " to be captured in the textfield more than once. How could I do this? Thanks.

 

[lastingforhours]

create a variable to hold what the previous key pressed is, then on the next key press, compare it to the last key pressed and if its another space, dont accept the input.

example:

//start off with a null var
var lastKey = null

//when a key is pressed... (in this example, the spacebar)
//note: "key value" is just psuedo code
if (keyPress(keyDown(SPACE))) {
    //if new key value is NOT equal to the last key value
    //(if this is a space and the last input isnt a space...
    //then display the input)
    if ("key value" != lastKey) {
        sometext.text = "key value";
        lastKey = "key value";
    }
    //otherwise do nothing
}

something like that

--
Matt Milburn, Wave Motion Studios
matt@wavemotionstudios.com

 

[billwatson]

perhaps simpler with a boolean value

spacePressed = false;
listen = new Object();
listen.onKeyDown = function() {
if (Key.getCode() == Key.SPACE){
if(!spacePressed){
spacePressed = true;
my_text.text += chr(Key.getAscii());
}
} else {
my_text.text += chr(Key.getAscii());
}
};
Key.addListener(listen);

 

[Sammybobo]

Thanks very much gentlemen, for your help.

Bill, "my_text.text += chr(Key.getAscii());" seems to be the same for both IF and ELSE. Would that be the case if I am trying to exclude SPACE after the first occurence? Thanks again.

 

[billwatson]

code as posted should only allow for 1 space

after first space click all else are ignored. is that not what you wanted?

 

[Sammybobo]

Yes. Thanks, Bill. I'll give it a swing.

 

[billwatson]

if i misunderstood the question then reset the boolean

spacePressed = false;
listen = new Object();
listen.onKeyDown = function() {
if (Key.getCode() == Key.SPACE) {
if (!spacePressed) {
spacePressed = true;
my_text.text += chr(Key.getAscii());
}
} else {
my_text.text += chr(Key.getAscii());
spacePressed = false;
}
};
Key.addListener(listen);



first version just says 1 space and 1 space only all other text a continuous string

text texttexttext


second version says only 1 space between strings

text text text

 

[Sammybobo]

Quite thoughtful! Thanks a bunch.