Preloading support in browser
Apps like the QSB can request the browser to preload a
web page.
- preloaded pages are not added to the browser history
if they'r not seen by the user
- when a request is received, a new tab is created for the
preloaded page, but not added to the tab list
- upon receiving the view intent for the preloaded page
the tab is added to the tab list, and shown
- if several pages are preloaded consecutively in the same tab,
the back stack is cleared before it is displayed
- preloaded pages use the main browser cookie jar, so pages that
have never been viewed by the user can drop cookies
Change-Id: I9ed21f2c9560fda0ed042b460b73bb33988a2e8a
diff --git a/src/com/android/browser/PreloadController.java b/src/com/android/browser/PreloadController.java
new file mode 100644
index 0000000..6528410
--- /dev/null
+++ b/src/com/android/browser/PreloadController.java
@@ -0,0 +1,224 @@
+/*
+ * Copyright (C) 2011 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.browser;
+
+import android.app.Activity;
+import android.content.Context;
+import android.graphics.Bitmap;
+import android.net.Uri;
+import android.net.http.SslError;
+import android.os.Message;
+import android.view.KeyEvent;
+import android.view.View;
+import android.webkit.HttpAuthHandler;
+import android.webkit.SslErrorHandler;
+import android.webkit.ValueCallback;
+import android.webkit.WebChromeClient.CustomViewCallback;
+import android.webkit.WebView;
+
+import java.util.List;
+
+public class PreloadController implements WebViewController {
+
+ private Context mContext;
+
+ public PreloadController(Context ctx) {
+ mContext = ctx;
+
+ }
+
+ @Override
+ public Context getContext() {
+ return mContext;
+ }
+
+ @Override
+ public Activity getActivity() {
+ return null;
+ }
+
+ @Override
+ public TabControl getTabControl() {
+ return null;
+ }
+
+ @Override
+ public WebViewFactory getWebViewFactory() {
+ return null;
+ }
+
+ @Override
+ public void onSetWebView(Tab tab, WebView view) {
+ }
+
+ @Override
+ public void createSubWindow(Tab tab) {
+ }
+
+ @Override
+ public void onPageStarted(Tab tab, WebView view, Bitmap favicon) {
+ }
+
+ @Override
+ public void onPageFinished(Tab tab) {
+ }
+
+ @Override
+ public void onProgressChanged(Tab tab) {
+ }
+
+ @Override
+ public void onReceivedTitle(Tab tab, String title) {
+ }
+
+ @Override
+ public void onFavicon(Tab tab, WebView view, Bitmap icon) {
+ }
+
+ @Override
+ public boolean shouldOverrideUrlLoading(Tab tab, WebView view, String url) {
+ return false;
+ }
+
+ @Override
+ public boolean shouldOverrideKeyEvent(KeyEvent event) {
+ return false;
+ }
+
+ @Override
+ public void onUnhandledKeyEvent(KeyEvent event) {
+ }
+
+ @Override
+ public void doUpdateVisitedHistory(Tab tab, boolean isReload) {
+ }
+
+ @Override
+ public void getVisitedHistory(ValueCallback<String[]> callback) {
+ }
+
+ @Override
+ public void onReceivedHttpAuthRequest(Tab tab, WebView view,
+ HttpAuthHandler handler, String host,
+ String realm) {
+ }
+
+ @Override
+ public void onDownloadStart(Tab tab, String url, String useragent,
+ String contentDisposition, String mimeType,
+ long contentLength) {
+ }
+
+ @Override
+ public void showCustomView(Tab tab, View view, int requestedOrientation,
+ CustomViewCallback callback) {
+ }
+
+ @Override
+ public void hideCustomView() {
+ }
+
+ @Override
+ public Bitmap getDefaultVideoPoster() {
+ return null;
+ }
+
+ @Override
+ public View getVideoLoadingProgressView() {
+ return null;
+ }
+
+ @Override
+ public void showSslCertificateOnError(WebView view,
+ SslErrorHandler handler, SslError error) {
+ }
+
+ @Override
+ public void onUserCanceledSsl(Tab tab) {
+ }
+
+ @Override
+ public void activateVoiceSearchMode(String title, List<String> results) {
+ }
+
+ @Override
+ public void revertVoiceSearchMode(Tab tab) {
+ }
+
+ @Override
+ public boolean shouldShowErrorConsole() {
+ return false;
+ }
+
+ @Override
+ public void onUpdatedLockIcon(Tab tab) {
+ }
+
+ @Override
+ public void openFileChooser(ValueCallback<Uri> uploadMsg, String acceptType) {
+ }
+
+ @Override
+ public void endActionMode() {
+ }
+
+ @Override
+ public void attachSubWindow(Tab tab) {
+ }
+
+ @Override
+ public void dismissSubWindow(Tab tab) {
+ }
+
+ @Override
+ public Tab openTab(String url, boolean incognito, boolean setActive,
+ boolean useCurrent) {
+ return null;
+ }
+
+ @Override
+ public Tab openTab(String url, Tab parent, boolean setActive,
+ boolean useCurrent) {
+ return null;
+ }
+
+ @Override
+ public boolean switchToTab(Tab tab) {
+ return false;
+ }
+
+ @Override
+ public void closeTab(Tab tab) {
+ }
+
+ @Override
+ public void setupAutoFill(Message message) {
+ }
+
+ @Override
+ public void bookmarkedStatusHasChanged(Tab tab) {
+ }
+
+ @Override
+ public void showAutoLogin(Tab tab) {
+ }
+
+ @Override
+ public void hideAutoLogin(Tab tab) {
+ }
+
+}