Java content handler for Android.

examples/android/App.java

+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package org.chromium.examples.android;
+
+import android.content.Context;
+import android.util.Log;
+
+import org.chromium.mojo.bindings.Interface;
+import org.chromium.mojo.bindings.InterfaceRequest;
+import org.chromium.mojo.system.Core;
+import org.chromium.mojo.system.MessagePipeHandle;
+import org.chromium.mojo.system.MojoException;
+import org.chromium.mojo.system.RunLoop;
+import org.chromium.mojom.mojo.Application;
+import org.chromium.mojom.mojo.ExampleService;
+import org.chromium.mojom.mojo.ServiceProvider;
+import org.chromium.mojom.mojo.Shell;
+
+import java.util.HashMap;
+import java.util.Map;
+
+/**
+ * App holds all the code for this example application.
+ */
+class App {
+    private static String TAG = "ExampleServiceApp";
+
+    public static class ApplicationImpl implements Application {
+        private final Core mCore;
+        private Shell mShell;
+
+        public ApplicationImpl(MessagePipeHandle applicationRequest, Core core) {

[qsr, 2015/02/10 11:58:18]

Maybe invert the 2 parameters. Core is some kind of constant, while the request
is the thing your are working on.

[etiennej, 2015/02/10 14:32:04]

Done.

+            ApplicationImpl.MANAGER.bind(this, applicationRequest);
+            mCore = core;
+        }
+
+        @Override
+        public void initialize(Shell shell, String[] args) {
+            mShell = shell;
+        }
+
+        @Override
+        public void acceptConnection(String requestorUrl,
+                InterfaceRequest<ServiceProvider> services, ServiceProvider exposedServices) {
+            ServiceProviderImpl serviceProvider = new ServiceProviderImpl();
+            serviceProvider.addService(
+                    new ServiceFactoryBinder<ExampleService>() {
+                        @Override
+                        public void bindNewInstanceToMessagePipe(
+                                MessagePipeHandle pipe) {
+                            ExampleService.MANAGER.bind(new ExampleServiceImpl(), pipe);
+                        }
+
+                        @Override
+                        public String getInterfaceName() {
+                            return ExampleService.MANAGER.getName();
+                        }
+                    }
+            );
+            ServiceProvider.MANAGER.bind(serviceProvider, services);
+            exposedServices.close();
+        };
+
+        @Override
+        public void requestQuit() {
+            mCore.getCurrentRunLoop().quit();
+        }
+
+        @Override
+        public void close() {
+            if (mShell != null) {
+                mShell.close();
+            }
+        }
+
+        @Override
+        public void onConnectionError(MojoException e) {}
+    }
+
+    /**
+     * ServiceFactoryBinder holds the necessary information to bind a service interface to a
+     * message pipe.
+     */
+    private static interface ServiceFactoryBinder<T extends Interface> {
+        public void bindNewInstanceToMessagePipe(MessagePipeHandle pipe);
+        public String getInterfaceName();
+    }
+
+    public static class ServiceProviderImpl implements ServiceProvider {
+        private Map<String, ServiceFactoryBinder<? extends Interface>> mNameToServiceMap =
+                new HashMap<String, ServiceFactoryBinder<? extends Interface>>();
+
+        public ServiceProviderImpl() {}
+
+        /**
+         * AddService adds a new service to the list of services provided by this application.
+         */
+        public void addService(ServiceFactoryBinder<? extends Interface> binder) {
+            mNameToServiceMap.put(binder.getInterfaceName(), binder);
+        }
+
+        @Override
+        public void connectToService(String interfaceName, MessagePipeHandle pipe) {
+            if (mNameToServiceMap.containsKey(interfaceName)) {
+                try {
+                    mNameToServiceMap.get(interfaceName).bindNewInstanceToMessagePipe(pipe);
+                } catch (Exception e) {

[qsr, 2015/02/10 11:58:18]

Why do you need to catch something here? Should not be necessary.

[etiennej, 2015/02/10 14:32:04]

Done.

+                    pipe.close();
+                    throw new RuntimeException(e);
+                }
+            } else {
+                pipe.close();
+            }
+        }
+
+        @Override
+        public void close() {}
+
+        @Override
+        public void onConnectionError(MojoException e) {}
+    }
+
+    public static class ExampleServiceImpl implements ExampleService {
+        public ExampleServiceImpl() {}
+
+        @Override
+        public void ping(short pingValue, ExampleService.PingResponse callback) {
+            callback.call(pingValue);
+        }
+
+        @Override
+        public void close() {}
+
+        @Override
+        public void onConnectionError(MojoException e) {}
+    }
+
+    public static void mojoMain(Context context, Core core,
+            MessagePipeHandle applicationRequestHandle) {
+        Log.i(TAG, "App.MojoMain called");
+        try (RunLoop runLoop = core.createDefaultRunLoop()) {
+            Log.i(TAG, "Run loop created");
+
+            Application application = new ApplicationImpl(applicationRequestHandle, core);
+
+            Log.i(TAG, "Setup done, starting run loop");
+            runLoop.run();
+            Log.i(TAG, "Run loop exited");
+        }
+    }
+}