Examples with Callback com.codename1.util.Callback used on opensource projects

Example 1 with Callback

use of com.codename1.util.Callback in project CodenameOne by codenameone.

the class CodenameOneImplementation method openGallery.

/**
 * Opens the device gallery
 * The method returns immediately and the response will be sent asynchronously
 * to the given ActionListener Object
 *
 * use this in the actionPerformed to retrieve the file path
 * String path = (String) evt.getSource();
 *
 * @param response a callback Object to retrieve the file path
 * @param type one of the following GALLERY_IMAGE, GALLERY_VIDEO, GALLERY_ALL
 * @throws RuntimeException if this feature failed or unsupported on the platform
 */
public void openGallery(final ActionListener response, int type) {
    final Dialog d = new Dialog("Select a picture");
    d.setLayout(new BorderLayout());
    FileTreeModel model = new FileTreeModel(true);
    if (type == Display.GALLERY_IMAGE) {
        model.addExtensionFilter("jpg");
        model.addExtensionFilter("png");
    } else if (type == Display.GALLERY_VIDEO) {
        model.addExtensionFilter("mp4");
        model.addExtensionFilter("3pg");
        model.addExtensionFilter("avi");
        model.addExtensionFilter("mov");
    } else if (type == Display.GALLERY_ALL) {
        model.addExtensionFilter("jpg");
        model.addExtensionFilter("png");
        model.addExtensionFilter("mp4");
        model.addExtensionFilter("3pg");
        model.addExtensionFilter("avi");
        model.addExtensionFilter("mov");
    }
    FileTree t = new FileTree(model) {

        protected Button createNodeComponent(final Object node, int depth) {
            if (node == null || !getModel().isLeaf(node)) {
                return super.createNodeComponent(node, depth);
            }
            Hashtable t = (Hashtable) Storage.getInstance().readObject("thumbnails");
            if (t == null) {
                t = new Hashtable();
            }
            final Hashtable thumbs = t;
            final Button b = super.createNodeComponent(node, depth);
            b.addActionListener(new ActionListener() {

                public void actionPerformed(ActionEvent evt) {
                    response.actionPerformed(new ActionEvent(node, ActionEvent.Type.Other));
                    d.dispose();
                }
            });
            final ImageIO imageio = ImageIO.getImageIO();
            if (imageio != null) {
                Display.getInstance().scheduleBackgroundTask(new Runnable() {

                    public void run() {
                        byte[] data = (byte[]) thumbs.get(node);
                        if (data == null) {
                            ByteArrayOutputStream out = new ByteArrayOutputStream();
                            try {
                                imageio.save(FileSystemStorage.getInstance().openInputStream((String) node), out, ImageIO.FORMAT_JPEG, b.getIcon().getWidth(), b.getIcon().getHeight(), 1);
                                data = out.toByteArray();
                                thumbs.put(node, data);
                                Storage.getInstance().writeObject("thumbnails", thumbs);
                            } catch (IOException ex) {
                                Log.e(ex);
                            }
                        }
                        Image im = Image.createImage(data, 0, data.length);
                        b.setIcon(im);
                    }
                });
            }
            return b;
        }
    };
    d.addComponent(BorderLayout.CENTER, t);
    d.placeButtonCommands(new Command[] { new Command("Cancel") });
    Command c = d.showAtPosition(2, 2, 2, 2, true);
    if (c != null) {
        response.actionPerformed(null);
    }
}

Example 2 with Callback

use of com.codename1.util.Callback in project CodenameOne by codenameone.

the class CodenameOneImplementation method downloadImageToCache.

/**
 * Downloads an image from a URL to the cache. Platforms
 * that support a native image cache {@link #supportsNativeImageCache() } (e.g. Javascript) override this method to defer to the
 * platform's handling of cached images.  Platforms that have a caches directory ({@link FileSystemStorage#hasCachesDir() }
 * will use that directory to cache the image.  Other platforms will just download to storage.
 *
 * @param url The URL of the image to download.
 * @param onSuccess Callback on success.
 * @param onFail Callback on fail.
 *
 * @see URLImage#createToCache(com.codename1.ui.EncodedImage, java.lang.String, com.codename1.ui.URLImage.ImageAdapter)
 */
public void downloadImageToCache(String url, SuccessCallback<Image> onSuccess, final FailureCallback<Image> onFail) {
    FileSystemStorage fs = FileSystemStorage.getInstance();
    if (fs.hasCachesDir()) {
        String name = "cn1_image_cache[" + url + "]";
        name = StringUtil.replaceAll(name, "/", "_");
        name = StringUtil.replaceAll(name, "\\", "_");
        name = StringUtil.replaceAll(name, "%", "_");
        name = StringUtil.replaceAll(name, "?", "_");
        name = StringUtil.replaceAll(name, "*", "_");
        name = StringUtil.replaceAll(name, ":", "_");
        name = StringUtil.replaceAll(name, "=", "_");
        String filePath = fs.getCachesDir() + fs.getFileSystemSeparator() + name;
        // We use Util.downloadImageToFileSystem rather than CodenameOneImplementation.downloadImageToFileSystem
        // because we want it to try to load from file system first.
        Util.downloadImageToFileSystem(url, filePath, onSuccess, onFail);
    } else {
        // We use Util.downloadImageToStorage rather than CodenameOneImplementation.downloadImageToStorage
        // because we want it to try to load from storage first.
        Util.downloadImageToStorage(url, "cn1_image_cache[" + url + "]", onSuccess, onFail);
    }
}

Example 3 with Callback

use of com.codename1.util.Callback in project CodenameOne by codenameone.

the class RequestBuilder method getAsBytesAsync.

/**
 * Executes the request asynchronously and writes the response to the provided
 * Callback
 * @param callback writes the response to this callback
 */
public void getAsBytesAsync(final Callback<Response<byte[]>> callback) {
    ConnectionRequest request = createRequest(false);
    request.addResponseListener(new ActionListener<NetworkEvent>() {

        @Override
        public void actionPerformed(NetworkEvent evt) {
            Response res = null;
            res = new Response(evt.getResponseCode(), evt.getConnectionRequest().getResponseData(), evt.getMessage());
            callback.onSucess(res);
        }
    });
    CN.addToQueue(request);
}

Example 4 with Callback

use of com.codename1.util.Callback in project CodenameOne by codenameone.

the class RequestBuilder method getAsJsonMap.

/**
 * Executes the request asynchronously and writes the response to the provided
 * Callback
 * @param callback writes the response to this callback
 * @param onError the error callback
 * @return returns the Connection Request object so it can be killed if necessary
 */
public ConnectionRequest getAsJsonMap(final SuccessCallback<Response<Map>> callback, final FailureCallback<? extends Object> onError) {
    ConnectionRequest request = createRequest(true);
    request.addResponseListener(new ActionListener<NetworkEvent>() {

        @Override
        public void actionPerformed(NetworkEvent evt) {
            if (onError != null) {
                // this is an error response code and should be handled as an error
                if (evt.getResponseCode() > 310) {
                    return;
                }
            }
            Response res = null;
            Map response = (Map) evt.getMetaData();
            res = new Response(evt.getResponseCode(), response, evt.getMessage());
            callback.onSucess(res);
        }
    });
    bindOnError(request, onError);
    CN.addToQueue(request);
    return request;
}

Example 5 with Callback

use of com.codename1.util.Callback in project CodenameOne by codenameone.

the class FaceBookAccess method postOnWall.

/**
 * Post a message on the users wall
 *
 * @param userId the userId
 * @param message the message to post
 * @param name
 * @param link
 * @param description
 * @param picture
 * @param caption
 */
public void postOnWall(String userId, String message, String name, String link, String description, String picture, String caption, ActionListener callback) throws IOException {
    checkAuthentication();
    FacebookRESTService con = new FacebookRESTService(token, userId, FacebookRESTService.FEED, true);
    if (message != null) {
        con.addArgument("message", message);
    }
    if (name != null) {
        con.addArgument("name", name);
    }
    if (link != null) {
        con.addArgument("link", link);
    }
    if (description != null) {
        con.addArgument("description", description);
    }
    if (picture != null) {
        con.addArgument("picture", picture);
    }
    if (caption != null) {
        con.addArgument("caption", caption);
    }
    con.addResponseListener(new Listener(con, callback));
    if (slider != null) {
        SliderBridge.bindProgress(con, slider);
    }
    for (int i = 0; i < responseCodeListeners.size(); i++) {
        con.addResponseCodeListener((ActionListener) responseCodeListeners.elementAt(i));
    }
    current = con;
    NetworkManager.getInstance().addToQueueAndWait(con);
}