Implement PostMessage API for Webview

Bug: 10237116

This CL implements the postmessage API for webview. It provides
a way for java applications to post messages to JS frames and
establish message channels, and then do full-duplex communication
after that.

Change-Id: Idbc2918552a4c9fd28ae1ddf19bd360e71f8a4a2

1 files changed, 62 insertions, 0 deletions

diff --git a/core/java/android/webkit/WebMessage.java b/core/java/android/webkit/WebMessage.java
new file mode 100644
index 0000000..7683a40
--- /dev/null
+++ b/core/java/android/webkit/WebMessage.java
@@ -0,0 +1,62 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.webkit;
+
+/**
+ * The Java representation of the HTML5 PostMessage event. See
+ * https://html.spec.whatwg.org/multipage/comms.html#the-messageevent-interfaces
+ * for definition of a MessageEvent in HTML5.
+ *
+ */
+public class WebMessage {
+
+    private String mData;
+    private WebMessagePort[] mPorts;
+
+    /**
+     * Creates a WebMessage.
+     * @param data  the data of the message.
+     */
+    public WebMessage(String data) {
+        mData = data;
+    }
+
+    /**
+     * Creates a WebMessage.
+     * @param data  the data of the message.
+     * @param ports  the ports that are sent with the message.
+     */
+    public WebMessage(String data, WebMessagePort[] ports) {
+        mData = data;
+        mPorts = ports;
+    }
+
+    /**
+     * Returns the data of the message.
+     */
+    public String getData() {
+        return mData;
+    }
+
+    /**
+     * Returns the ports that are sent with the message, or null if no port
+     * is sent.
+     */
+    public WebMessagePort[] getPorts() {
+        return mPorts;
+    }
+}