Re: GTKD - CSS class color "flash" delay

[TheDGuy via Digitalmars-d-learn]

On Wednesday, 29 June 2016 at 10:41:21 UTC, TheDGuy wrote:
I tried to debug a little and what i don't understand is, that 
i get two times 'blue' on the console, even though yellow and 
blue lit up but yellow stayed at the flash color:

    private void letButtonsFlash(){
        foreach(Button btn;bArr){
            btn.setSensitive(false);
        }
        for(int i = 0; i < level; i++){
            index = i;
            Button currentButton = bArr[rndButtonBlink[i]]; 
//Array holds randomized Buttons
            ListG list = 
currentButton.getStyleContext().listClasses();
            string CSSClassName = 
to!string(cast(char*)list.next().data);
            
currentButton.getStyleContext().addClass(CSSClassName ~ 
"-flash");
            Timeout t = new Timeout(() => 
this.timeout_delay(currentButton),1,false);
        }

        foreach(Button btn;bArr){
            btn.setSensitive(true);
        }
    }
    bool timeout_delay(Button currentButton){
        ListG list = 
currentButton.getStyleContext().listClasses();
        string CSSClassName = 
to!string(cast(char*)list.next().data);
        writeln(CSSClassName); //try to debug
        
currentButton.getStyleContext().removeClass(CSSClassName ~ 
"-flash");
        return false;
    }

The reason for the problem that buttons are flashing 
simultaneously might be, that the Timeout is running in an 
extra thread and therefore another Timeout is created by the 
mainthread in the for-loop even though the last one hasn't 
finished yet.

But what i don't understand is why the last button doesn't go 
back to the normal CSSClass and that the first button has two 
timeouts (according to my console debug text)?

It would be very much appreciated if someone who has GTKD 
installed can try my code:

http://pastebin.com/h0Nx1mL6

Okay, i am quite sure now that this is some kind of bug:

https://picload.org/image/rrrgwpgi/gtkd_timeout.png

    private void letButtonsFlash(){
        foreach(Button btn;bArr){
            btn.setSensitive(false);
        }
        for(int i = 0; i < level; i++){
            index = i;
            Button currentButton = bArr[rndButtonBlink[i]]; 
//Array holds randomized Buttons
            ListG list = 
currentButton.getStyleContext().listClasses();
            string CSSClassName = 
to!string(cast(char*)list.next().data);
            currentButton.getStyleContext().addClass(CSSClassName 
~ "-flash");
            writeln("Creating Timeout for : " ~ CSSClassName);
            Timeout t = new Timeout(() => 
this.timeout_delay(currentButton),1,false);
        }

        foreach(Button btn;bArr){
            btn.setSensitive(true);
        }
    }
    bool timeout_delay(Button currentButton){
        ListG list = 
currentButton.getStyleContext().listClasses();
        string CSSClassName = 
to!string(cast(char*)list.next().data);
        currentButton.getStyleContext().removeClass(CSSClassName 
~ "-flash");
        writeln("Removing flash CSS color for: " ~ CSSClassName);
        return false;
    }