First implementation of SWebBrowser for Android

[CL 2712814 by Gareth Martin in Main branch]

Engine/Build/Android/Java/src/com/epicgames/ue4/GameActivity.java

@@ -133,9 +133,11 @@ public class GameActivity extends NativeActivity
 	private AdView adView;
 	private boolean adInit = false;
 	private LinearLayout adLayout;
-	private LinearLayout activityLayout;
 	private int adGravity = Gravity.TOP;
 
+	// layout required by popups, e.g ads, native controls
+	LinearLayout activityLayout;
+
 	/** true when the application has requested that an ad be displayed */
 	private boolean adWantsToBeShown = false;
 
@@ -270,7 +272,13 @@ public class GameActivity extends NativeActivity
 		}
 
 		_activity = this;
-		
+
+		// layout required by popups, e.g ads, native controls
+		MarginLayoutParams params = new MarginLayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
+		params.setMargins(0, 0, 0, 0);
+		activityLayout = new LinearLayout(_activity);
+		_activity.setContentView(activityLayout, params);
+
 /*
 		// Turn on and unlock screen.. Assumption is that this
 		// will only really have an effect when for debug launching
@@ -960,7 +968,6 @@ public class GameActivity extends NativeActivity
 					adPopupWindow.setClippingEnabled(false);
 
 					adLayout = new LinearLayout(_activity);
-					activityLayout = new LinearLayout(_activity);
 
 					final int padding = (int)(-5*scale);
 					adLayout.setPadding(padding,padding,padding,padding);
@@ -973,8 +980,6 @@ public class GameActivity extends NativeActivity
 					adLayout.addView(adView, params);
 					adPopupWindow.setContentView(adLayout);
 
-					_activity.setContentView(activityLayout, params);
-
 					// set up our ad callbacks
 					_activity.adView.setAdListener(new AdListener()
 					{

Engine/Build/Android/Java/src/com/epicgames/ue4/WebViewControl.java

@@ -0,0 +1,85 @@
+// Copyright 1998-2015 Epic Games, Inc. All Rights Reserved.
+
+package com.epicgames.ue4;
+
+import android.content.res.Resources;
+import android.graphics.drawable.Drawable;
+import android.util.DisplayMetrics;
+import android.view.Gravity;
+import android.view.ViewGroup.LayoutParams;
+import android.view.ViewGroup.MarginLayoutParams;
+import android.widget.LinearLayout;
+import android.widget.PopupWindow;
+
+import android.webkit.WebView;
+import android.webkit.WebViewClient;
+
+class WebViewControl
+{
+	public WebViewControl()
+	{
+		GameActivity._activity.runOnUiThread(new Runnable()
+		{
+			@Override
+			public void run()
+			{
+				webView = new WebView(GameActivity._activity);
+				webView.getSettings().setJavaScriptEnabled(true);
+				webView.loadUrl("about:blank");
+			}
+		});
+	}
+
+	public void LoadURL(final String url)
+	{
+		GameActivity._activity.runOnUiThread(new Runnable()
+		{
+			@Override
+			public void run()
+			{
+				webView.loadUrl(url);
+			}
+		});
+	}
+
+	public void Update(final int x, final int y, final int width, final int height)
+	{
+		GameActivity._activity.runOnUiThread(new Runnable()
+		{
+			@Override
+			public void run()
+			{
+				if (webPopup == null)
+				{
+					webPopup = new PopupWindow(GameActivity._activity);
+					webPopup.setWidth(width);
+					webPopup.setHeight(height);
+					webPopup.setClippingEnabled(false);
+					webPopup.setOutsideTouchable(false); // non-modal
+					webPopup.setBackgroundDrawable((Drawable)null); // no border
+
+					webLayout = new LinearLayout(GameActivity._activity);
+					webLayout.setOrientation(LinearLayout.VERTICAL);
+					webLayout.setPadding(0, 0, 0, 0);
+
+					MarginLayoutParams params = new MarginLayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT);
+					params.setMargins(0, 0, 0, 0);
+					webLayout.addView(webView, params);
+
+					webPopup.setContentView(webLayout);
+					webPopup.showAtLocation(GameActivity._activity.activityLayout, Gravity.NO_GRAVITY, x, y);
+					webPopup.update();
+				}
+				else
+				{
+					webPopup.update(x, y, width, height);
+				}
+			}
+		});
+	}
+
+	// Web Views
+	private PopupWindow webPopup;
+	private LinearLayout webLayout;
+	private WebView webView;
+}