Upstream oodles of Chrome for Android code into Chromium.

chrome/android/java_staging/src/org/chromium/chrome/browser/webapps/WebappActivity.java

Index: chrome/android/java_staging/src/org/chromium/chrome/browser/webapps/WebappActivity.java
diff --git a/chrome/android/java_staging/src/org/chromium/chrome/browser/webapps/WebappActivity.java b/chrome/android/java_staging/src/org/chromium/chrome/browser/webapps/WebappActivity.java
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@@ -0,0 +1,359 @@
+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package org.chromium.chrome.browser.webapps;
+
+import android.content.Context;
+import android.content.Intent;
+import android.graphics.Bitmap;
+import android.net.Uri;
+import android.os.AsyncTask;
+import android.os.Bundle;
+import android.text.TextUtils;
+import android.util.Log;
+import android.view.View;
+
+import com.google.android.apps.chrome.R;
+
+import org.chromium.base.ActivityState;
+import org.chromium.base.ApiCompatibilityUtils;
+import org.chromium.base.ApplicationStatus;
+import org.chromium.base.VisibleForTesting;
+import org.chromium.chrome.browser.EmptyTabObserver;
+import org.chromium.chrome.browser.ShortcutHelper;
+import org.chromium.chrome.browser.Tab;
+import org.chromium.chrome.browser.TabObserver;
+import org.chromium.chrome.browser.UrlUtilities;
+import org.chromium.chrome.browser.document.DocumentUtils;
+import org.chromium.chrome.browser.fullscreen.ChromeFullscreenManager;
+import org.chromium.chrome.browser.ssl.ConnectionSecurityHelperSecurityLevel;
+import org.chromium.chrome.browser.util.FeatureUtilities;
+import org.chromium.content.browser.ScreenOrientationProvider;
+import org.chromium.content_public.browser.LoadUrlParams;
+import org.chromium.content_public.browser.WebContentsObserver;
+import org.chromium.net.NetworkChangeNotifier;
+import org.chromium.ui.base.PageTransition;
+
+import java.io.File;
+
+/**
+ * Displays a webapp in a nearly UI-less Chrome (InfoBars still appear).
+ */
+public class WebappActivity extends FullScreenActivity {
+    public static final String WEBAPP_SCHEME = "webapp";
+
+    private static final String TAG = "WebappActivity";
+    private static final long MS_BEFORE_NAVIGATING_BACK_FROM_INTERSTITIAL = 1000;
+
+    private final WebappInfo mWebappInfo;
+    private AsyncTask<Void, Void, Void> mCleanupTask;
+
+    private WebContentsObserver mWebContentsObserver;
+
+    private WebappUrlBar mUrlBar;
+
+    private boolean mIsInitialized;
+    private Integer mBrandColor;
+
+    /**
+     * Construct all the variables that shouldn't change.  We do it here both to clarify when the
+     * objects are created and to ensure that they exist throughout the parallelized initialization
+     * of the WebappActivity.
+     */
+    public WebappActivity() {
+        mWebappInfo = WebappInfo.createEmpty();
+    }
+
+    @Override
+    protected void onNewIntent(Intent intent) {
+        if (intent == null) return;
+        super.onNewIntent(intent);
+
+        WebappInfo newWebappInfo = WebappInfo.create(intent);
+        if (newWebappInfo == null) {
+            Log.e(TAG, "Failed to parse new Intent: " + intent);
+            finish();
+        } else if (!TextUtils.equals(mWebappInfo.id(), newWebappInfo.id())) {
+            mWebappInfo.copy(newWebappInfo);
+            resetSavedInstanceState();
+            if (mIsInitialized) initializeUI(null);
+        }
+    }
+
+    private void initializeUI(Bundle savedInstanceState) {
+        // We do not load URL when restoring from saved instance states.
+        if (savedInstanceState == null && mWebappInfo.isInitialized()) {
+            if (TextUtils.isEmpty(getActivityTab().getUrl())) {
+                getActivityTab().loadUrl(new LoadUrlParams(
+                        mWebappInfo.uri().toString(), PageTransition.AUTO_TOPLEVEL));
+            }
+        } else {
+            if (NetworkChangeNotifier.isOnline()) getActivityTab().reloadIgnoringCache();
+        }
+
+        mWebContentsObserver = createWebContentsObserver();
+        getActivityTab().addObserver(createTabObserver());
+        updateTaskDescription();
+        removeWindowBackground();
+    }
+
+    @Override
+    public void preInflationStartup() {
+        WebappInfo info = WebappInfo.create(getIntent());
+        if (info != null) mWebappInfo.copy(info);
+        mCleanupTask = new WebappDirectoryManager(getActivityDirectory(),
+                WEBAPP_SCHEME, FeatureUtilities.isDocumentModeEligible(this));
+
+        ScreenOrientationProvider.lockOrientation((byte) mWebappInfo.orientation(), this);
+        super.preInflationStartup();
+    }
+
+    @Override
+    public void finishNativeInitialization() {
+        if (!mWebappInfo.isInitialized()) finish();
+        super.finishNativeInitialization();
+        initializeUI(getSavedInstanceState());
+        mIsInitialized = true;
+    }
+
+    @Override
+    protected void onSaveInstanceState(Bundle outState) {
+        super.onSaveInstanceState(outState);
+        mWebappInfo.writeToBundle(outState);
+        if (getActivityTab() != null) getActivityTab().saveInstanceState(outState);
+    }
+
+    @Override
+    public void onStartWithNative() {
+        super.onStartWithNative();
+        if (mCleanupTask.getStatus() == AsyncTask.Status.PENDING) mCleanupTask.execute();
+    }
+
+    @Override
+    public void onStopWithNative() {
+        super.onStopWithNative();
+        mCleanupTask.cancel(true);
+        if (getActivityTab() != null) getActivityTab().saveState(getActivityDirectory());
+        if (getFullscreenManager() != null) {
+            getFullscreenManager().setPersistentFullscreenMode(false);
+        }
+    }
+
+    @Override
+    public void onResume() {
+        if (!isFinishing() && getIntent() != null) {
+            // Avoid situations where Android starts two Activities with the same data.
+            DocumentUtils.finishOtherTasksWithData(getIntent().getData(), getTaskId());
+        }
+        super.onResume();
+    }
+    @Override
+    protected int getControlContainerLayoutId() {
+        return R.layout.webapp_control_container;
+    }
+
+    @Override
+    public void postInflationStartup() {
+        super.postInflationStartup();
+        WebappControlContainer controlContainer =
+                (WebappControlContainer) findViewById(R.id.control_container);
+        mUrlBar = (WebappUrlBar) controlContainer.findViewById(R.id.webapp_url_bar);
+    }
+
+    /**
+     * @return Structure containing data about the webapp currently displayed.
+     */
+    WebappInfo getWebappInfo() {
+        return mWebappInfo;
+    }
+
+    private void updateUrlBar() {
+        Tab tab = getActivityTab();
+        if (tab == null || mUrlBar == null) return;
+        mUrlBar.update(tab.getUrl(), tab.getSecurityLevel());
+    }
+
+    private WebContentsObserver createWebContentsObserver() {
+        // TODO: Move to TabObserver eventually.
+        return new WebContentsObserver(getActivityTab().getWebContents()) {
+            @Override
+            public void didNavigateMainFrame(String url, String baseUrl,
+                    boolean isNavigationToDifferentPage, boolean isNavigationInPage,
+                    int statusCode) {
+                updateUrlBar();
+            }
+
+            @Override
+            public void didAttachInterstitialPage() {
+                updateUrlBar();
+
+                int state = ApplicationStatus.getStateForActivity(WebappActivity.this);
+                if (state == ActivityState.PAUSED || state == ActivityState.STOPPED
+                        || state == ActivityState.DESTROYED) {
+                    return;
+                }
+
+                // Kick the interstitial navigation to Chrome.
+                Intent intent = new Intent(
+                        Intent.ACTION_VIEW, Uri.parse(getActivityTab().getUrl()));
+                intent.setPackage(getPackageName());
+                intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+                startActivity(intent);
+
+                // Pretend like the navigation never happened.  We delay so that this happens while
+                // the Activity is in the background.
+                mHandler.postDelayed(new Runnable() {
+                    @Override
+                    public void run() {
+                        getActivityTab().goBack();
+                    }
+                }, MS_BEFORE_NAVIGATING_BACK_FROM_INTERSTITIAL);
+            }
+
+            @Override
+            public void didDetachInterstitialPage() {
+                updateUrlBar();
+            }
+        };
+    }
+
+    private boolean isWebappDomain() {
+        return UrlUtilities.sameDomainOrHost(
+                getActivityTab().getUrl(), getWebappInfo().uri().toString(), true);
+    }
+
+    protected TabObserver createTabObserver() {
+        return new EmptyTabObserver() {
+            @Override
+            public void onSSLStateUpdated(Tab tab) {
+                updateUrlBar();
+            }
+
+            @Override
+            public void onDidStartProvisionalLoadForFrame(
+                    Tab tab, long frameId, long parentFrameId, boolean isMainFrame,
+                    String validatedUrl, boolean isErrorPage, boolean isIframeSrcdoc) {
+                if (isMainFrame) updateUrlBar();
+            }
+
+            @Override
+            public void onDidChangeThemeColor(int color) {
+                if (!isWebappDomain()) return;
+                mBrandColor = color;
+                updateTaskDescription();
+            }
+
+            @Override
+            public void onTitleUpdated(Tab tab) {
+                if (!isWebappDomain()) return;
+                updateTaskDescription();
+            }
+
+            @Override
+            public void onFaviconUpdated(Tab tab) {
+                if (!isWebappDomain()) return;
+                updateTaskDescription();
+            }
+        };
+    }
+
+    private void updateTaskDescription() {
+        String title = mWebappInfo.title() == null
+                ? getActivityTab().getTitle() : mWebappInfo.title();
+        Bitmap icon = mWebappInfo.icon() == null
+                ? getActivityTab().getFavicon() : mWebappInfo.icon();
+        int color = mBrandColor == null
+                ? getResources().getColor(R.color.default_primary_color) : mBrandColor;
+
+        DocumentUtils.updateTaskDescription(this, title, icon, color, mBrandColor == null);
+    }
+
+    /**
+     * Get the active directory by this web app.
+     *
+     * @return The directory used for the current web app.
+     */
+    @Override
+    protected File getActivityDirectory() {
+        return WebappDirectoryManager.getWebappDirectory(mWebappInfo.id());
+    }
+
+    @VisibleForTesting
+    WebappUrlBar getUrlBarForTests() {
+        return mUrlBar;
+    }
+
+    @VisibleForTesting
+    boolean isUrlBarVisible() {
+        return findViewById(R.id.control_container).getVisibility() == View.VISIBLE;
+    }
+
+    @Override
+    protected final ChromeFullscreenManager createFullscreenManager(View controlContainer) {
+        return new ChromeFullscreenManager(this, controlContainer, getTabModelSelector(),
+                getControlContainerHeightResource(), false /* supportsBrowserOverride */);
+    }
+
+    @Override
+    protected int getControlContainerHeightResource() {
+        return R.dimen.webapp_control_container_height;
+    }
+
+    // Implements {@link FullScreenActivityTab.TopControlsVisibilityDelegate}.
+    @Override
+    public boolean shouldShowTopControls(String url, int securityLevel) {
+        boolean visible = false;  // do not show top controls when URL is not ready yet.
+        if (!TextUtils.isEmpty(url)) {
+            boolean isSameWebsite =
+                    UrlUtilities.sameDomainOrHost(mWebappInfo.uri().toString(), url, true);
+            visible = !isSameWebsite
+                    || securityLevel == ConnectionSecurityHelperSecurityLevel.SECURITY_ERROR
+                    || securityLevel == ConnectionSecurityHelperSecurityLevel.SECURITY_WARNING;
+        }
+
+        return visible;
+    }
+
+    // We're temporarily disable CS on webapp since there are some issues. (http://crbug.com/471950)
+    // TODO(changwan): re-enable it once the issues are resolved.
+    @Override
+    protected boolean isContextualSearchAllowed() {
+        return false;
+    }
+
+    /**
+     * Launches the URL in its own WebappActivity.
+     * @param context Context to use for launching the webapp.
+     * @param id ID of the webapp.
+     * @param url URL for the webapp.
+     * @param icon Base64 encoded Bitmap representing the webapp.
+     * @param title String to show in Recents.
+     * @param orientation Default orientation for the activity.
+     */
+    public static void launchInstance(Context context, String id, String url, String icon,
+            String title, int orientation) {
+        String activityName = WebappActivity.class.getName();
+        if (!FeatureUtilities.isDocumentModeEligible(context)) {
+            // Specifically assign the app to a particular WebappActivity instance.
+            int activityIndex = ActivityAssigner.instance(context).assign(id);
+            activityName += String.valueOf(activityIndex);
+        }
+
+        // Fire an intent to launch the Webapp in an unmapped Activity.
+        Intent webappIntent = new Intent();
+        webappIntent.setClassName(context, activityName);
+        webappIntent.putExtra(ShortcutHelper.EXTRA_ICON, icon);
+        webappIntent.putExtra(ShortcutHelper.EXTRA_ID, id);
+        webappIntent.putExtra(ShortcutHelper.EXTRA_URL, url);
+        webappIntent.putExtra(ShortcutHelper.EXTRA_TITLE, title);
+        webappIntent.putExtra(ShortcutHelper.EXTRA_ORIENTATION, orientation);
+
+        // On L, firing intents with the exact same data should relaunch a particular Activity.
+        webappIntent.setAction(Intent.ACTION_VIEW);
+        webappIntent.setData(Uri.parse(WEBAPP_SCHEME + "://" + id));
+        webappIntent.setFlags(ApiCompatibilityUtils.getActivityNewDocumentFlag());
+
+        context.startActivity(webappIntent);
+    }
+}