[Android WebView] Add an API to toggle the JS navigator.online property

BUG=279929

Review URL: https://chromiumcodereview.appspot.com/22986033

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@219854 0039d316-1c4b-4281-b951-d872f2087c98

android_webview/browser/renderer_host/aw_render_view_host_ext.cc

@@ -96,6 +96,10 @@ void AwRenderViewHostExt::SetBackgroundColor(SkColor c) {
   }
 }
 
+void AwRenderViewHostExt::SetJsOnlineProperty(bool network_up) {
+  Send(new AwViewMsg_SetJsOnlineProperty(network_up));
+}
+
 void AwRenderViewHostExt::RenderViewCreated(
     content::RenderViewHost* render_view_host) {
   Send(new AwViewMsg_SetBackgroundColor(web_contents()->GetRoutingID(),

android_webview/browser/renderer_host/aw_render_view_host_ext.h

@@ -72,6 +72,7 @@ class AwRenderViewHostExt : public content::WebContentsObserver,
   // the meta viewport tag.
   void SetInitialPageScale(double page_scale_factor);
   void SetBackgroundColor(SkColor c);
+  void SetJsOnlineProperty(bool network_up);
 
  private:
   // content::WebContentsObserver implementation.

android_webview/common/render_view_messages.h

@@ -71,6 +71,9 @@ IPC_MESSAGE_ROUTED1(AwViewMsg_SetInitialPageScale,
 IPC_MESSAGE_ROUTED1(AwViewMsg_SetBackgroundColor,
                     SkColor);
 
+IPC_MESSAGE_CONTROL1(AwViewMsg_SetJsOnlineProperty,
+                     bool /* network_up */)
+
 //-----------------------------------------------------------------------------
 // RenderView messages
 // These are messages sent from the renderer to the browser process.
@@ -87,4 +90,3 @@ IPC_MESSAGE_ROUTED1(AwViewHostMsg_UpdateHitTestData,
 // Sent whenever the page scale factor (as seen by RenderView) is changed.
 IPC_MESSAGE_ROUTED1(AwViewHostMsg_PageScaleFactorChanged,
                     float /* page_scale_factor */)
-

android_webview/java/src/org/chromium/android_webview/AwContents.java

@@ -1639,6 +1639,11 @@ public void hideAutofillPopup() {
             mAwAutofillManagerDelegate.hideAutofillPopup();
     }
 
+    public void setNetworkAvailable(boolean networkUp) {
+        if (mNativeAwContents == 0) return;
+        nativeSetJsOnlineProperty(mNativeAwContents, networkUp);
+    }
+
     //--------------------------------------------------------------------------------------------
     //  Methods called from native via JNI
     //--------------------------------------------------------------------------------------------
@@ -1917,4 +1922,6 @@ private native void nativeSetDisplayedPageScaleFactor(int nativeAwContents,
 
     private native void nativeInvokeGeolocationCallback(
             int nativeAwContents, boolean value, String requestingFrame);
+
+    private native void nativeSetJsOnlineProperty(int nativeAwContents, boolean networkUp);
 }

android_webview/javatests/src/org/chromium/android_webview/test/AwContentsTest.java

@@ -392,4 +392,29 @@ public void testDownload() throws Throwable {
             if (webServer != null) webServer.shutdown();
         }
     }
+
+    @Feature({"AndroidWebView", "setNetworkAvailable"})
+    @SmallTest
+    public void testSetNetworkAvailable() throws Throwable {
+        AwTestContainerView testView = createAwTestContainerViewOnMainSync(mContentsClient);
+        AwContents awContents = testView.getAwContents();
+        String SCRIPT = "navigator.onLine";
+
+        enableJavaScriptOnUiThread(awContents);
+        loadUrlSync(awContents, mContentsClient.getOnPageFinishedHelper(), "about:blank");
+
+        // Default to "online".
+        assertEquals("true", executeJavaScriptAndWaitForResult(awContents, mContentsClient,
+              SCRIPT));
+
+        // Forcing "offline".
+        awContents.setNetworkAvailable(false);
+        assertEquals("false", executeJavaScriptAndWaitForResult(awContents, mContentsClient,
+              SCRIPT));
+
+        // Forcing "online".
+        awContents.setNetworkAvailable(true);
+        assertEquals("true", executeJavaScriptAndWaitForResult(awContents, mContentsClient,
+              SCRIPT));
+    }
 }

android_webview/native/aw_contents.cc

@@ -780,4 +780,10 @@ void AwContents::EnableOnNewPicture(JNIEnv* env,
   browser_view_renderer_->EnableOnNewPicture(enabled);
 }
 
+void AwContents::SetJsOnlineProperty(JNIEnv* env,
+                                     jobject obj,
+                                     jboolean network_up) {
+  render_view_host_ext_->SetJsOnlineProperty(network_up);
+}
+
 }  // namespace android_webview

android_webview/native/aw_contents.h

@@ -173,6 +173,9 @@ class AwContents : public FindHelper::Listener,
 
   // Sets the java delegate
   void SetAwAutofillManagerDelegate(jobject delegate);
+
+  void SetJsOnlineProperty(JNIEnv* env, jobject obj, jboolean network_up);
+
  private:
   void InitAutofillIfNecessary(bool enabled);
 

android_webview/renderer/aw_render_process_observer.cc

@@ -7,6 +7,7 @@
 #include "android_webview/common/render_view_messages.h"
 #include "ipc/ipc_message_macros.h"
 #include "third_party/WebKit/public/web/WebCache.h"
+#include "third_party/WebKit/public/web/WebNetworkStateNotifier.h"
 
 namespace android_webview {
 
@@ -22,6 +23,7 @@ bool AwRenderProcessObserver::OnControlMessageReceived(
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(AwRenderProcessObserver, message)
     IPC_MESSAGE_HANDLER(AwViewMsg_ClearCache, OnClearCache)
+    IPC_MESSAGE_HANDLER(AwViewMsg_SetJsOnlineProperty, OnSetJsOnlineProperty)
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
   return handled;
@@ -36,4 +38,9 @@ void AwRenderProcessObserver::OnClearCache() {
     WebKit::WebCache::clear();
 }
 
+void AwRenderProcessObserver::OnSetJsOnlineProperty(bool network_up) {
+  if (webkit_initialized_)
+    WebKit::WebNetworkStateNotifier::setOnLine(network_up);
+}
+
 }  // nanemspace android_webview

android_webview/renderer/aw_render_process_observer.h

@@ -24,6 +24,7 @@ class AwRenderProcessObserver : public content::RenderProcessObserver {
 
  private:
   void OnClearCache();
+  void OnSetJsOnlineProperty(bool network_up);
 
   bool webkit_initialized_;
 };