Examples with StreamVariable com.vaadin.terminal.StreamVariable used on opensource projects

Example 1 with StreamVariable

use of com.vaadin.terminal.StreamVariable in project Activiti by Activiti.

the class UploadComponent method drop.

// Drag and drop handling (DropHandler) ---------------------------------------------------------
public void drop(DragAndDropEvent event) {
    WrapperTransferable transferable = (WrapperTransferable) event.getTransferable();
    Html5File[] files = transferable.getFiles();
    if (files != null && files.length > 0) {
        // only support for one file upload at this moment
        final Html5File file = files[0];
        file.setStreamVariable(new StreamVariable() {

            private static final long serialVersionUID = 1L;

            public void streamingStarted(StreamingStartEvent event) {
                // event doesnt matter here
                uploadStarted(null);
            }

            public void streamingFinished(StreamingEndEvent event) {
                // event doesnt matter here
                uploadFinished(null);
            }

            public void streamingFailed(StreamingErrorEvent event) {
                uploadFailed(null);
            }

            public void onProgress(StreamingProgressEvent event) {
                updateProgress(event.getBytesReceived(), event.getContentLength());
            }

            public boolean listenProgress() {
                return true;
            }

            public boolean isInterrupted() {
                return false;
            }

            public OutputStream getOutputStream() {
                return receiver.receiveUpload(file.getFileName(), file.getType());
            }
        });
    }
}