Sample screensaver: load a webpage full-screen.

Configuration is currently accomplished by ACTION_SENDing a URL.
At some point we'll have a configuration UI. :/

Change-Id: I0d410e6fd99e44c0aab005bd5c5fc177fe1c7bdb
diff --git a/src/com/android/dreams/web/Screensaver.java b/src/com/android/dreams/web/Screensaver.java
new file mode 100644
index 0000000..39a4146
--- /dev/null
+++ b/src/com/android/dreams/web/Screensaver.java
@@ -0,0 +1,89 @@
+/*
+ * Copyright (C) 2012 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 com.android.dreams.web;
+
+import android.animation.Animator;
+import android.animation.AnimatorSet;
+import android.animation.ObjectAnimator;
+import android.animation.TimeInterpolator;
+import android.content.BroadcastReceiver;
+import android.content.Context;
+import android.content.Intent;
+import android.content.IntentFilter;
+import android.content.res.Configuration;
+import android.graphics.drawable.Drawable;
+import android.graphics.PorterDuff;
+import android.net.Uri;
+import android.os.BatteryManager;
+import android.os.Handler;
+import android.provider.Settings;
+import android.service.dreams.Dream;
+import android.util.Log;
+import android.view.MotionEvent;
+import android.view.View;
+import android.view.WindowManager;
+import android.view.animation.AccelerateInterpolator;
+import android.view.animation.DecelerateInterpolator;
+import android.webkit.WebSettings;
+import android.webkit.WebView;
+import android.webkit.WebViewClient;
+import android.content.SharedPreferences;
+import android.preference.PreferenceManager;
+import android.widget.TextView;
+
+public class Screensaver extends Dream {
+    @Override
+    public void onStart() {
+        super.onStart();
+    }
+
+    private class LinkLauncher extends WebViewClient {
+        @Override
+        public boolean shouldOverrideUrlLoading(WebView view, String url) {
+            Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url));
+            intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+            startActivity(intent);
+            finish();
+            return true;
+        }
+    }
+
+    @Override
+    public void onAttachedToWindow() {
+        super.onAttachedToWindow();
+
+        setContentView(R.layout.main);
+
+        lightsOut(); // lights out, fullscreen
+
+        final SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);
+        final String url = prefs.getString("url", "file:///android_asset/default.html");
+
+        final boolean interactive = prefs.getBoolean("interactive", false);
+        Log.v("WebViewDream", String.format("loading %s in %s mode",
+                url, interactive ? "interactive" : "noninteractive"));
+        setInteractive(interactive);
+
+        WebView webview = (WebView) findViewById(R.id.webview);
+        webview.setWebViewClient(new LinkLauncher());
+
+        WebSettings webSettings = webview.getSettings();
+        webSettings.setJavaScriptEnabled(true);
+        
+        webview.loadUrl(url);
+    }
+}