Moved StreamVariable handling from AbstractCommunicationManager to

ConnectorTracker to prevent untimely unregistrations through other UIs
within the same session (#10112)

Change-Id: Id04c97970325be65b0b3c63756a2f2e731dd60d2

1 files changed, 118 insertions, 0 deletions

diff --git a/uitest/src/com/vaadin/tests/components/ui/MultipleUIUploadTest.java b/uitest/src/com/vaadin/tests/components/ui/MultipleUIUploadTest.java
new file mode 100644
index 0000000000..f92e22d06b
--- /dev/null
+++ b/uitest/src/com/vaadin/tests/components/ui/MultipleUIUploadTest.java
@@ -0,0 +1,118 @@
+package com.vaadin.tests.components.ui;
+
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.InputStream;
+import java.io.OutputStream;
+
+import com.vaadin.server.StreamResource;
+import com.vaadin.server.VaadinRequest;
+import com.vaadin.tests.components.AbstractTestUI;
+import com.vaadin.ui.Button;
+import com.vaadin.ui.Button.ClickEvent;
+import com.vaadin.ui.Button.ClickListener;
+import com.vaadin.ui.Notification;
+import com.vaadin.ui.Upload;
+import com.vaadin.ui.VerticalLayout;
+
+public class MultipleUIUploadTest extends AbstractTestUI {
+
+    private MemoryBuffer buffer = new MemoryBuffer();
+    private Upload upload;
+
+    @Override
+    protected String getTestDescription() {
+        return "Using Upload with multiple UIs causes NPE."
+                + " Open test in first browser window and open the file selection window."
+                + " Then open test in second browser window (without ?restartApplication) and click the notification button."
+                + " Then go back to the first window, select a file, and click Upload."
+                + " Click notification button to ensure the upload was received successfully.";
+    }
+
+    @Override
+    protected Integer getTicketNumber() {
+        return 10112;
+    }
+
+    @Override
+    protected void setup(VaadinRequest request) {
+        final VerticalLayout layout = new VerticalLayout();
+        layout.setMargin(true);
+        layout.setSpacing(true);
+        setContent(layout);
+
+        upload = new Upload(null, buffer);
+        upload.setId("upload");
+        layout.addComponent(upload);
+
+        Button button = new Button("show notification");
+        button.setId("notify");
+        button.addClickListener(new ClickListener() {
+
+            @Override
+            public void buttonClick(ClickEvent event) {
+                Notification.show("uploaded: " + buffer.getFileName());
+            }
+        });
+        layout.addComponent(button);
+
+    }
+
+    public class MemoryBuffer implements StreamResource.StreamSource,
+            Upload.Receiver {
+        ByteArrayOutputStream outputBuffer = null;
+
+        String mimeType;
+
+        String fileName;
+
+        public MemoryBuffer() {
+
+        }
+
+        @Override
+        public InputStream getStream() {
+            if (outputBuffer == null) {
+                return null;
+            }
+            return new ByteArrayInputStream(outputBuffer.toByteArray());
+        }
+
+        /**
+         * @see com.vaadin.ui.Upload.Receiver#receiveUpload(String, String)
+         */
+        @Override
+        public OutputStream receiveUpload(String filename, String MIMEType) {
+            fileName = filename;
+            mimeType = MIMEType;
+            outputBuffer = new ByteArrayOutputStream() {
+                @Override
+                public synchronized void write(byte[] b, int off, int len) {
+                    super.write(b, off, len);
+                }
+
+            };
+            return outputBuffer;
+        }
+
+        /**
+         * Returns the fileName.
+         * 
+         * @return String
+         */
+        public String getFileName() {
+            return fileName;
+        }
+
+        /**
+         * Returns the mimeType.
+         * 
+         * @return String
+         */
+        public String getMimeType() {
+            return mimeType;
+        }
+
+    }
+
+}