Class CallBack

CodenameOne/src/com/codename1/capture/Capture.java:372–429

    }

    static class CallBack implements ActionListener<ActionEvent>, Runnable {
        String url;
        // We need volatile due to the usage of double locking optimization
        @SuppressWarnings("PMD.AvoidUsingVolatile")
        private volatile boolean completed;
        private int targetWidth = -1;
        private int targetHeight = -1;

        @Override
        public void actionPerformed(ActionEvent evt) {
            if (evt == null) {
                url = null;
            } else {
                url = (String) evt.getSource();
            }
            synchronized (this) {
                completed = true;
                this.notifyAll();
            }
        }

        @Override
        public void run() {
            while (!completed) {
                synchronized (this) {
                    try {
                        // we need to recheck the condition within the synchronized block (double locking)
                        if (!completed) {
                            this.wait();
                        }
                    } catch (InterruptedException ex) {
                    }
                }
            }
            if (url == null) {
                return;
            }
            if (targetWidth > 0 || targetHeight > 0) {
                ImageIO scale = Display.getInstance().getImageIO();
                if (scale != null) {
                    OutputStream os = null; //NOPMD CloseResource
                    try {

                        String path = url.substring(0, url.lastIndexOf(".")) + "s" + url.substring(url.lastIndexOf("."));
                        os = FileSystemStorage.getInstance().openOutputStream(path);
                        scale.save(url, os, ImageIO.FORMAT_JPEG, targetWidth, targetHeight, 1);
                        FileSystemStorage.getInstance().delete(url);
                        url = path;
                    } catch (IOException ex) {
                        Log.e(ex);
                    } finally {
                        Util.cleanup(os);
                    }
                }
            }
        }

    }