// Copyright 2014 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.tab;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.app.Application;
import android.content.Context;
import android.content.Intent;
import android.content.res.Resources;
import android.graphics.Bitmap;
import android.graphics.Color;
import android.graphics.Rect;
import android.net.Uri;
import android.os.Bundle;
import android.provider.Browser;
import android.support.annotation.Nullable;
import android.text.TextUtils;
import android.util.Log;
import android.view.ContextThemeWrapper;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.view.accessibility.AccessibilityEvent;
import android.widget.FrameLayout;
import android.widget.FrameLayout.LayoutParams;
import org.chromium.base.ApiCompatibilityUtils;
import org.chromium.base.ApplicationStatus;
import org.chromium.base.ContextUtils;
import org.chromium.base.ObserverList;
import org.chromium.base.ObserverList.RewindableIterator;
import org.chromium.base.TraceEvent;
import org.chromium.base.VisibleForTesting;
import org.chromium.base.annotations.CalledByNative;
import org.chromium.base.metrics.RecordHistogram;
import org.chromium.blimp_public.contents.BlimpContents;
import org.chromium.chrome.R;
import org.chromium.chrome.browser.ChromeActionModeCallback;
import org.chromium.chrome.browser.ChromeActivity;
import org.chromium.chrome.browser.ChromeApplication;
import org.chromium.chrome.browser.ChromeFeatureList;
import org.chromium.chrome.browser.ChromeVersionInfo;
import org.chromium.chrome.browser.FrozenNativePage;
import org.chromium.chrome.browser.IntentHandler;
import org.chromium.chrome.browser.IntentHandler.TabOpenType;
import org.chromium.chrome.browser.NativePage;
import org.chromium.chrome.browser.SwipeRefreshHandler;
import org.chromium.chrome.browser.TabState;
import org.chromium.chrome.browser.TabState.WebContentsState;
import org.chromium.chrome.browser.UrlConstants;
import org.chromium.chrome.browser.WarmupManager;
import org.chromium.chrome.browser.WebContentsFactory;
import org.chromium.chrome.browser.banners.AppBannerManager;
import org.chromium.chrome.browser.blimp.BlimpClientContextFactory;
import org.chromium.chrome.browser.compositor.layouts.content.TabContentManager;
import org.chromium.chrome.browser.contextmenu.ContextMenuPopulator;
import org.chromium.chrome.browser.contextualsearch.ContextualSearchTabHelper;
import org.chromium.chrome.browser.customtabs.CustomTabActivity;
import org.chromium.chrome.browser.document.ChromeLauncherActivity;
import org.chromium.chrome.browser.download.ChromeDownloadDelegate;
import org.chromium.chrome.browser.fullscreen.FullscreenManager;
import org.chromium.chrome.browser.help.HelpAndFeedback;
import org.chromium.chrome.browser.infobar.InfoBarContainer;
import org.chromium.chrome.browser.media.ui.MediaSessionTabHelper;
import org.chromium.chrome.browser.ntp.NativePageAssassin;
import org.chromium.chrome.browser.ntp.NativePageFactory;
import org.chromium.chrome.browser.offlinepages.OfflinePageItem;
import org.chromium.chrome.browser.offlinepages.OfflinePageUtils;
import org.chromium.chrome.browser.policy.PolicyAuditor;
import org.chromium.chrome.browser.prerender.ExternalPrerenderHandler;
import org.chromium.chrome.browser.printing.TabPrinter;
import org.chromium.chrome.browser.profiles.Profile;
import org.chromium.chrome.browser.rlz.RevenueStats;
import org.chromium.chrome.browser.snackbar.SnackbarManager;
import org.chromium.chrome.browser.ssl.SecurityStateModel;
import org.chromium.chrome.browser.tab.TabUma.TabCreationState;
import org.chromium.chrome.browser.tabmodel.AsyncTabParamsManager;
import org.chromium.chrome.browser.tabmodel.TabModel;
import org.chromium.chrome.browser.tabmodel.TabModel.TabLaunchType;
import org.chromium.chrome.browser.tabmodel.TabModel.TabSelectionType;
import org.chromium.chrome.browser.tabmodel.TabModelImpl;
import org.chromium.chrome.browser.tabmodel.TabModelSelector;
import org.chromium.chrome.browser.tabmodel.TabReparentingParams;
import org.chromium.chrome.browser.util.ColorUtils;
import org.chromium.chrome.browser.util.FeatureUtilities;
import org.chromium.components.dom_distiller.core.DomDistillerUrlUtils;
import org.chromium.components.navigation_interception.InterceptNavigationDelegate;
import org.chromium.components.security_state.ConnectionSecurityLevel;
import org.chromium.content.browser.ChildProcessLauncher;
import org.chromium.content.browser.ContentView;
import org.chromium.content.browser.ContentViewClient;
import org.chromium.content.browser.ContentViewCore;
import org.chromium.content.browser.crypto.CipherFactory;
import org.chromium.content_public.browser.GestureStateListener;
import org.chromium.content_public.browser.LoadUrlParams;
import org.chromium.content_public.browser.WebContents;
import org.chromium.content_public.common.BrowserControlsState;
import org.chromium.content_public.common.BrowserControlsState.BrowserControlsStateEnum;
import org.chromium.content_public.common.Referrer;
import org.chromium.content_public.common.ResourceRequestBody;
import org.chromium.printing.PrintManagerDelegateImpl;
import org.chromium.printing.PrintingController;
import org.chromium.printing.PrintingControllerImpl;
import org.chromium.ui.base.LocalizationUtils;
import org.chromium.ui.base.PageTransition;
import org.chromium.ui.base.ViewAndroidDelegate;
import org.chromium.ui.base.WindowAndroid;
import org.chromium.ui.mojom.WindowOpenDisposition;
import java.lang.ref.WeakReference;
import java.nio.ByteBuffer;
import java.util.List;
/**
* The basic Java representation of a tab. Contains and manages a {@link ContentView}.
* <p>
* This class is intended to be extended either on Java or both Java and C++, with ownership managed
* by this base class.
* <p>
* Extending just Java:
* - Just extend the class normally. Do not override initializeNative().
* Extending Java and C++:
* - Because of the inner-workings of JNI, the subclass is responsible for constructing the native
* subclass, which in turn constructs TabAndroid (the native counterpart to Tab), which in
* turn sets the native pointer for Tab. For destruction, subclasses in Java must clear
* their own native pointer reference, but Tab#destroy() will handle deleting the native
* object.
*/
public class Tab implements ViewGroup.OnHierarchyChangeListener,
View.OnSystemUiVisibilityChangeListener {
public static final int INVALID_TAB_ID = -1;
/** Return value from {@link #getBookmarkId()} if this tab is not bookmarked. */
public static final long INVALID_BOOKMARK_ID = -1;
private static final long INVALID_TIMESTAMP = -1;
/**
* The required page load percentage for the page to be considered ready assuming the
* TextureView is also ready.
*/
private static final int CONSIDERED_READY_LOAD_PERCENTAGE = 100;
/** Used for logging. */
private static final String TAG = "Tab";
private static final String PRODUCT_VERSION = ChromeVersionInfo.getProductVersion();
private long mNativeTabAndroid;
/** Unique id of this tab (within its container). */
private final int mId;
/** Whether or not this tab is an incognito tab. */
private final boolean mIncognito;
/** Whether or not this tab is running in blimp mode. */
private boolean mBlimp;
/**
* An Application {@link Context}. Unlike {@link #mActivity}, this is the only one that is
* publicly exposed to help prevent leaking the {@link Activity}.
*/
private final Context mThemedApplicationContext;
/** Gives {@link Tab} a way to interact with the Android window. */
private WindowAndroid mWindowAndroid;
/** Whether or not this {@link Tab} is initialized and should be interacted with. */
private boolean mIsInitialized;
/** The current native page (e.g. chrome-native://newtab), or {@code null} if there is none. */
private NativePage mNativePage;
/** InfoBar container to show InfoBars for this tab. */
private InfoBarContainer mInfoBarContainer;
/** Controls overscroll pull-to-refresh behavior for this tab. */
private SwipeRefreshHandler mSwipeRefreshHandler;
/** The sync id of the Tab if session sync is enabled. */
private int mSyncId;
/** {@link ContentViewCore} showing the current page, or {@code null} if the tab is frozen. */
private ContentViewCore mContentViewCore;
/** Listens to gesture events fired by the ContentViewCore. */
private GestureStateListener mGestureStateListener;
/** The parent view of the ContentView and the InfoBarContainer. */
private TabContentViewParent mContentViewParent;
/** A list of Tab observers. These are used to broadcast Tab events to listeners. */
private final ObserverList<TabObserver> mObservers = new ObserverList<>();
// Content layer Observers and Delegates
private ContentViewClient mContentViewClient;
private TabWebContentsObserver mWebContentsObserver;
private TabBlimpContentsObserver mBlimpContentsObserver;
private TabWebContentsDelegateAndroid mWebContentsDelegate;
private BlimpContents mBlimpContents;
/**
* If this tab was opened from another tab, store the id of the tab that
* caused it to be opened so that we can activate it when this tab gets
* closed.
*/
private int mParentId = INVALID_TAB_ID;
/**
* If this tab was opened from another tab in another Activity, this is the Intent that can be
* fired to bring the parent Activity back.
* TODO(dfalcantara): Remove this mechanism when we have a global TabManager.
*/
private Intent mParentIntent;
/**
* Whether the tab should be grouped with its parent tab.
*/
private boolean mGroupedWithParent = true;
private boolean mIsClosing;
private boolean mIsShowingErrorPage;
private Bitmap mFavicon;
private String mFaviconUrl;
/**
* The size in pixels at which favicons will be drawn. Ideally mFavicon will have this size to
* avoid scaling artifacts.
*/
private int mIdealFaviconSize;
/** Whether or not the TabState has changed. */
private boolean mIsTabStateDirty = true;
/**
* Saves how this tab was launched (from a link, external app, etc) so that
* we can determine the different circumstances in which it should be
* closed. For example, a tab opened from an external app should be closed
* when the back stack is empty and the user uses the back hardware key. A
* standard tab however should be kept open and the entire activity should
* be moved to the background.
*/
private final TabLaunchType mLaunchType;
/**
* Navigation state of the WebContents as returned by nativeGetContentsStateAsByteBuffer(),
* stored to be inflated on demand using unfreezeContents(). If this is not null, there is no
* WebContents around. Upon tab switch WebContents will be unfrozen and the variable will be set
* to null.
*/
private WebContentsState mFrozenContentsState;
/**
* Whether the restoration from frozen state failed.
*/
private boolean mFailedToRestore;
/**
* URL load to be performed lazily when the Tab is next shown.
*/
private LoadUrlParams mPendingLoadParams;
/**
* URL of the page currently loading. Used as a fall-back in case tab restore fails.
*/
private String mUrl;
/**
* The external application that this Tab is associated with (null if not associated with any
* app). Allows reusing of tabs opened from the same application.
*/
private String mAppAssociatedWith;
/**
* Keeps track of whether the Tab should be kept in the TabModel after the user hits "back".
* Used by Document mode to keep track of whether we want to remove the tab when user hits back.
*/
private boolean mShouldPreserve;
/**
* Indicates if the tab needs to be reloaded upon next display. This is set to true when the tab
* crashes while in background, or if a speculative restore in background gets cancelled before
* it completes.
*/
private boolean mNeedsReload;
/**
* True while a page load is in progress.
*/
private boolean mIsLoading;
/**
* True while a restore page load is in progress.
*/
private boolean mIsBeingRestored;
/**
* Whether or not the Tab is currently visible to the user.
*/
private boolean mIsHidden = true;
/** Whether the renderer is currently unresponsive. */
private boolean mIsRendererUnresponsive;
/**
* The last time this tab was shown or the time of its initialization if it wasn't yet shown.
*/
private long mTimestampMillis = INVALID_TIMESTAMP;
/**
* Title of the ContentViews webpage.Always update mTitle through updateTitle() so that it also
* updates mIsTitleDirectionRtl correctly.
*/
private String mTitle;
/**
* Indicates if mTitle should be displayed from right to left.
*/
private boolean mIsTitleDirectionRtl;
/**
* The mInterceptNavigationDelegate will be consulted for top-level frame navigations. This
* allows presenting the intent picker to the user so that a native Android application can be
* used if available.
*/
private InterceptNavigationDelegateImpl mInterceptNavigationDelegate;
/**
* Whether didCommitProvisionalLoadForFrame() hasn't yet been called for the current native page
* (page A). To decrease latency, we show native pages in both loadUrl() and
* didCommitProvisionalLoadForFrame(). However, we mustn't show a new native page (page B) in
* loadUrl() if the current native page hasn't yet been committed. Otherwise, we'll show each
* page twice (A, B, A, B): the first two times in loadUrl(), the second two times in
* didCommitProvisionalLoadForFrame().
*/
private boolean mIsNativePageCommitPending;
private TabRedirectHandler mTabRedirectHandler;
private FullscreenManager mFullscreenManager;
private float mPreviousTopControlsOffsetY = Float.NaN;
private float mPreviousBottomControlsOffsetY = Float.NaN;
private float mPreviousContentOffsetY = Float.NaN;
/**
* Indicates whether this tab has been detached from its activity and the corresponding
* {@link WindowAndroid} for reparenting to a new activity.
*/
private boolean mIsDetachedForReparenting;
/**
* The UMA object used to report stats for this tab. Note that this may be null under certain
* conditions, such as incognito mode.
*/
private TabUma mTabUma;
/**
* Reference to the current sadTabView if one is defined.
*/
private View mSadTabView;
private final int mDefaultThemeColor;
private int mThemeColor;
private ChromeDownloadDelegate mDownloadDelegate;
/** Whether or not the tab closing the tab can send the user back to the app that opened it. */
private boolean mIsAllowedToReturnToExternalApp;
private class TabContentViewClient extends ContentViewClient {
@Override
public void onBackgroundColorChanged(int color) {
Tab.this.onBackgroundColorChanged(color);
}
@Override
public void onTopControlsChanged(float topControlsOffsetY, float topContentOffsetY) {
super.onTopControlsChanged(topControlsOffsetY, topContentOffsetY);
onOffsetsChanged(topControlsOffsetY, mPreviousBottomControlsOffsetY,
topContentOffsetY, isShowingSadTab());
}
@Override
public void onBottomControlsChanged(float bottomControlsOffsetY,
float bottomContentOffsetY) {
super.onBottomControlsChanged(bottomControlsOffsetY, bottomContentOffsetY);
onOffsetsChanged(mPreviousTopControlsOffsetY, bottomControlsOffsetY,
mPreviousContentOffsetY, isShowingSadTab());
}
@Override
public void onUpdateTitle(String title) {
updateTitle(title);
}
@Override
public void onImeEvent() {
// Some text was set in the page. Don't reuse it if a tab is
// open from the same external application, we might lose some
// user data.
mAppAssociatedWith = null;
}
@Override
public void onFocusedNodeEditabilityChanged(boolean editable) {
if (getFullscreenManager() == null) return;
updateFullscreenEnabledState();
}
@Override
public int getSystemWindowInsetLeft() {
ChromeActivity activity = getActivity();
if (activity != null && activity.getInsetObserverView() != null) {
return activity.getInsetObserverView().getSystemWindowInsetsLeft();
}
return 0;
}
@Override
public int getSystemWindowInsetTop() {
ChromeActivity activity = getActivity();
if (activity != null && activity.getInsetObserverView() != null) {
return activity.getInsetObserverView().getSystemWindowInsetsTop();
}
return 0;
}
@Override
public int getSystemWindowInsetRight() {
ChromeActivity activity = getActivity();
if (activity != null && activity.getInsetObserverView() != null) {
return activity.getInsetObserverView().getSystemWindowInsetsRight();
}
return 0;
}
@Override
public int getSystemWindowInsetBottom() {
ChromeActivity activity = getActivity();
if (activity != null && activity.getInsetObserverView() != null) {
return activity.getInsetObserverView().getSystemWindowInsetsBottom();
}
return 0;
}
}
private GestureStateListener createGestureStateListener() {
return new GestureStateListener() {
@Override
public void onFlingStartGesture(int scrollOffsetY, int scrollExtentY) {
onScrollingStateChanged();
}
@Override
public void onFlingEndGesture(int scrollOffsetY, int scrollExtentY) {
onScrollingStateChanged();
}
@Override
public void onScrollStarted(int scrollOffsetY, int scrollExtentY) {
onScrollingStateChanged();
}
@Override
public void onScrollEnded(int scrollOffsetY, int scrollExtentY) {
onScrollingStateChanged();
}
private void onScrollingStateChanged() {
FullscreenManager fullscreenManager = getFullscreenManager();
if (fullscreenManager == null) return;
fullscreenManager.onContentViewScrollingStateChanged(
getContentViewCore() != null && getContentViewCore().isScrollInProgress());
}
};
}
// TODO(dtrainor): Port more methods to the observer.
private final TabObserver mTabObserver = new EmptyTabObserver() {
@Override
public void onSSLStateUpdated(Tab tab) {
PolicyAuditor auditor =
((ChromeApplication) getApplicationContext()).getPolicyAuditor();
auditor.notifyCertificateFailure(
PolicyAuditor.nativeGetCertificateFailure(getWebContents()),
getApplicationContext());
updateFullscreenEnabledState();
updateThemeColorIfNeeded(false);
}
@Override
public void onUrlUpdated(Tab tab) {
updateThemeColorIfNeeded(false);
}
@Override
public void onWebContentsSwapped(Tab tab, boolean didStartLoad, boolean didFinishLoad) {
if (!didStartLoad) return;
String url = tab.getUrl();
// Simulate the PAGE_LOAD_STARTED notification that we did not get.
didStartPageLoad(url, false);
if (didFinishLoad) {
// Simulate the PAGE_LOAD_FINISHED notification that we did not get.
didFinishPageLoad();
}
}
};
private TabDelegateFactory mDelegateFactory;
private BrowserControlsVisibilityDelegate mBrowserControlsVisibilityDelegate;
/**
* Creates an instance of a {@link Tab}.
*
* This constructor may be called before the native library has been loaded, so any additions
* must be vetted for library calls.
*
* @param id The id this tab should be identified with.
* @param incognito Whether or not this tab is incognito.
* @param window An instance of a {@link WindowAndroid}.
*/
public Tab(int id, boolean incognito, WindowAndroid window) {
this(id, INVALID_TAB_ID, incognito, null, window, null, null, null);
}
/**
* Creates an instance of a {@link Tab}.
*
* This constructor can be called before the native library has been loaded, so any additions
* must be vetted for library calls.
*
* @param id The id this tab should be identified with.
* @param parentId The id id of the tab that caused this tab to be opened.
* @param incognito Whether or not this tab is incognito.
* @param context An instance of a {@link Context}.
* @param window An instance of a {@link WindowAndroid}.
* @param creationState State in which the tab is created, needed to initialize TabUma
* accounting. When null, TabUma will not be initialized.
* @param frozenState State containing information about this Tab, if it was persisted.
*/
@SuppressLint("HandlerLeak")
public Tab(int id, int parentId, boolean incognito, Context context,
WindowAndroid window, TabLaunchType type, TabCreationState creationState,
TabState frozenState) {
mId = TabIdManager.getInstance().generateValidId(id);
mParentId = parentId;
mIncognito = incognito;
mThemedApplicationContext = context != null ? new ContextThemeWrapper(
context.getApplicationContext(), ChromeActivity.getThemeId()) : null;
mWindowAndroid = window;
mLaunchType = type;
if (mThemedApplicationContext != null) {
Resources resources = mThemedApplicationContext.getResources();
mIdealFaviconSize = resources.getDimensionPixelSize(R.dimen.default_favicon_size);
mDefaultThemeColor = mIncognito
? ApiCompatibilityUtils.getColor(resources, R.color.incognito_primary_color)
: ApiCompatibilityUtils.getColor(resources, R.color.default_primary_color);
mThemeColor = calculateThemeColor(false);
} else {
mIdealFaviconSize = 16;
mDefaultThemeColor = 0;
mThemeColor = mDefaultThemeColor;
}
// Restore data from the TabState, if it existed.
if (frozenState != null) {
assert type == TabLaunchType.FROM_RESTORE;
restoreFieldsFromState(frozenState);
}
setContentViewClient(new TabContentViewClient());
mTabRedirectHandler = new TabRedirectHandler(mThemedApplicationContext);
addObserver(mTabObserver);
if (incognito) {
CipherFactory.getInstance().triggerKeyGeneration();
}
ContextualSearchTabHelper.createForTab(this);
MediaSessionTabHelper.createForTab(this);
if (creationState != null) {
mTabUma = new TabUma(creationState);
if (frozenState == null) {
assert creationState != TabCreationState.FROZEN_ON_RESTORE;
} else {
assert type == TabLaunchType.FROM_RESTORE
&& creationState == TabCreationState.FROZEN_ON_RESTORE;
}
}
}
/**
* Restores member fields from the given TabState.
* @param state TabState containing information about this Tab.
*/
private void restoreFieldsFromState(TabState state) {
assert state != null;
mAppAssociatedWith = state.openerAppId;
mFrozenContentsState = state.contentsState;
mSyncId = (int) state.syncId;
mShouldPreserve = state.shouldPreserve;
mTimestampMillis = state.timestampMillis;
mUrl = state.getVirtualUrlFromState();
mThemeColor = state.hasThemeColor() ? state.getThemeColor() : getDefaultThemeColor();
mTitle = state.getDisplayTitleFromState();
mIsTitleDirectionRtl = mTitle != null
&& LocalizationUtils.getFirstStrongCharacterDirection(mTitle)
== LocalizationUtils.RIGHT_TO_LEFT;
}
/**
* Adds a {@link TabObserver} to be notified on {@link Tab} changes.
* @param observer The {@link TabObserver} to add.
*/
public void addObserver(TabObserver observer) {
mObservers.addObserver(observer);
}
/**
* Removes a {@link TabObserver}.
* @param observer The {@link TabObserver} to remove.
*/
public void removeObserver(TabObserver observer) {
mObservers.removeObserver(observer);
}
/**
* @return Whether or not this tab has a previous navigation entry.
*/
public boolean canGoBack() {
if (isBlimpTab()) {
return getBlimpContents() != null
&& getBlimpContents().getNavigationController().canGoBack();
} else {
return getWebContents() != null
&& getWebContents().getNavigationController().canGoBack();
}
}
/**
* @return Whether or not this tab has a navigation entry after the current one.
*/
public boolean canGoForward() {
if (isBlimpTab()) {
return getBlimpContents() != null
&& getBlimpContents().getNavigationController().canGoForward();
} else {
return getWebContents() != null
&& getWebContents().getNavigationController().canGoForward();
}
}
/**
* Goes to the navigation entry before the current one.
*/
public void goBack() {
if (isBlimpTab()) {
if (getBlimpContents() != null) getBlimpContents().getNavigationController().goBack();
} else {
if (getWebContents() != null) getWebContents().getNavigationController().goBack();
}
}
/**
* Goes to the navigation entry after the current one.
*/
public void goForward() {
if (isBlimpTab()) {
if (getBlimpContents() != null) {
getBlimpContents().getNavigationController().goForward();
}
} else {
if (getWebContents() != null) getWebContents().getNavigationController().goForward();
}
}
/**
* Loads the current navigation if there is a pending lazy load (after tab restore).
*/
public void loadIfNecessary() {
if (getWebContents() != null) getWebContents().getNavigationController().loadIfNecessary();
}
/**
* Requests the current navigation to be loaded upon the next call to loadIfNecessary().
*/
protected void requestRestoreLoad() {
if (getWebContents() != null) {
getWebContents().getNavigationController().requestRestoreLoad();
}
}
/**
* Causes this tab to navigate to the specified URL.
* @param params parameters describing the url load. Note that it is important to set correct
* page transition as it is used for ranking URLs in the history so the omnibox
* can report suggestions correctly.
* @return FULL_PRERENDERED_PAGE_LOAD or PARTIAL_PRERENDERED_PAGE_LOAD if the page has been
* prerendered. DEFAULT_PAGE_LOAD if it had not.
*/
public int loadUrl(LoadUrlParams params) {
try {
TraceEvent.begin("Tab.loadUrl");
// TODO(tedchoc): When showing the android NTP, delay the call to nativeLoadUrl until
// the android view has entirely rendered.
if (!mIsNativePageCommitPending) {
mIsNativePageCommitPending = maybeShowNativePage(params.getUrl(), false);
}
removeSadTabIfPresent();
// Clear the app association if the user navigated to a different page from the omnibox.
if ((params.getTransitionType() & PageTransition.FROM_ADDRESS_BAR)
== PageTransition.FROM_ADDRESS_BAR) {
mAppAssociatedWith = null;
setIsAllowedToReturnToExternalApp(false);
}
// We load the URL from the tab rather than directly from the ContentView so the tab has
// a chance of using a prerenderer page is any.
int loadType = nativeLoadUrl(mNativeTabAndroid, params.getUrl(),
params.getVerbatimHeaders(), params.getPostData(), params.getTransitionType(),
params.getReferrer() != null ? params.getReferrer().getUrl() : null,
// Policy will be ignored for null referrer url, 0 is just a placeholder.
// TODO(ppi): Should we pass Referrer jobject and add JNI methods to read it
// from the native?
params.getReferrer() != null ? params.getReferrer().getPolicy() : 0,
params.getIsRendererInitiated(), params.getShouldReplaceCurrentEntry(),
params.getIntentReceivedTimestamp(), params.getHasUserGesture());
for (TabObserver observer : mObservers) {
observer.onLoadUrl(this, params, loadType);
}
return loadType;
} finally {
TraceEvent.end("Tab.loadUrl");
}
}
/**
* Called when the contextual ActionBar is shown or hidden.
* @param show {@code true} when the ActionBar is shown; {@code false} otherwise.
*/
public void notifyContextualActionBarVisibilityChanged(boolean show) {
for (TabObserver observer : mObservers) {
observer.onContextualActionBarVisibilityChanged(this, show);
}
}
/**
* Load the original image (uncompressed by spdy proxy) in this tab.
*/
void loadOriginalImage() {
if (mNativeTabAndroid != 0) nativeLoadOriginalImage(mNativeTabAndroid);
}
/**
* @return Whether or not the {@link Tab} is currently showing an interstitial page, such as
* a bad HTTPS page.
*/
public boolean isShowingInterstitialPage() {
return getWebContents() != null && getWebContents().isShowingInterstitialPage();
}
/**
* @return Whether the {@link Tab} is currently showing an error page.
*/
public boolean isShowingErrorPage() {
return mIsShowingErrorPage;
}
/**
* Sets whether the tab is showing an error page. This is reset whenever the tab finishes a
* navigation.
*
* @param isShowingErrorPage Whether the tab shows an error page.
*/
public void setIsShowingErrorPage(boolean isShowingErrorPage) {
mIsShowingErrorPage = isShowingErrorPage;
}
/**
* @return Whether or not the tab has something valid to render.
*/
public boolean isReady() {
return mNativePage != null || (getWebContents() != null && getWebContents().isReady());
}
/**
* @return The {@link View} displaying the current page in the tab. This can be {@code null}, if
* the tab is frozen or being initialized or destroyed.
*/
public TabContentViewParent getView() {
return mContentViewParent;
}
/**
* @return The width of the content of this tab. Can be 0 if there is no content.
*/
public int getWidth() {
View view = getView();
return view != null ? view.getWidth() : 0;
}
/**
* @return The height of the content of this tab. Can be 0 if there is no content.
*/
public int getHeight() {
View view = getView();
return view != null ? view.getHeight() : 0;
}
/**
* @return The application {@link Context} associated with this tab.
*/
protected Context getApplicationContext() {
return mThemedApplicationContext.getApplicationContext();
}
/**
* @return {@link ChromeActivity} that currently contains this {@link Tab} in its
* {@link TabModel}.
*/
ChromeActivity getActivity() {
if (getWindowAndroid() == null) return null;
Activity activity = WindowAndroid.activityFromContext(
getWindowAndroid().getContext().get());
if (activity instanceof ChromeActivity) return (ChromeActivity) activity;
return null;
}
/**
* @return {@link TabModelSelector} that currently hosts the {@link TabModel} for this
* {@link Tab}.
*/
public TabModelSelector getTabModelSelector() {
if (getActivity() == null) return null;
return getActivity().getTabModelSelector();
}
/**
* @return The infobar container.
*/
public final InfoBarContainer getInfoBarContainer() {
return mInfoBarContainer;
}
/** @return An opaque "state" object that can be persisted to storage. */
public TabState getState() {
if (!isInitialized()) return null;
TabState tabState = new TabState();
tabState.contentsState = getWebContentsState();
tabState.openerAppId = mAppAssociatedWith;
tabState.parentId = mParentId;
tabState.shouldPreserve = mShouldPreserve;
tabState.syncId = mSyncId;
tabState.timestampMillis = mTimestampMillis;
tabState.themeColor = getThemeColor();
return tabState;
}
/** @return WebContentsState representing the state of the WebContents (navigations, etc.) */
public WebContentsState getFrozenContentsState() {
return mFrozenContentsState;
}
/** Returns an object representing the state of the Tab's WebContents. */
private TabState.WebContentsState getWebContentsState() {
if (mFrozenContentsState != null) return mFrozenContentsState;
// Native call returns null when buffer allocation needed to serialize the state failed.
ByteBuffer buffer = getWebContentsStateAsByteBuffer();
if (buffer == null) return null;
TabState.WebContentsState state = new TabState.WebContentsStateNative(buffer);
state.setVersion(TabState.CONTENTS_STATE_CURRENT_VERSION);
return state;
}
/** Returns an ByteBuffer representing the state of the Tab's WebContents. */
private ByteBuffer getWebContentsStateAsByteBuffer() {
if (mPendingLoadParams == null) {
return TabState.getContentsStateAsByteBuffer(this);
} else {
Referrer referrer = mPendingLoadParams.getReferrer();
return TabState.createSingleNavigationStateAsByteBuffer(
mPendingLoadParams.getUrl(),
referrer != null ? referrer.getUrl() : null,
// Policy will be ignored for null referrer url, 0 is just a placeholder.
referrer != null ? referrer.getPolicy() : 0,
isIncognito());
}
}
/**
* Prints the current page.
*
* @return Whether the printing process is started successfully.
**/
public boolean print() {
assert mNativeTabAndroid != 0;
return nativePrint(mNativeTabAndroid);
}
@CalledByNative
public void setPendingPrint() {
PrintingController printingController = PrintingControllerImpl.getInstance();
if (printingController == null) return;
printingController.setPendingPrint(new TabPrinter(this),
new PrintManagerDelegateImpl(getActivity()));
}
/**
* Reloads the current page content.
*/
public void reload() {
// TODO(dtrainor): Should we try to rebuild the ContentView if it's frozen?
if (isBlimpTab()) {
if (getBlimpContents() != null) {
getBlimpContents().getNavigationController().reload();
}
} else if (isOfflinePage()) {
// If current page is an offline page, reload it with custom behavior defined in extra
// header respected.
OfflinePageUtils.reload(this);
} else {
if (getWebContents() != null) getWebContents().getNavigationController().reload(true);
}
}
/**
* Reloads the current page content.
* This version ignores the cache and reloads from the network.
*/
public void reloadIgnoringCache() {
if (getWebContents() != null) {
getWebContents().getNavigationController().reloadBypassingCache(true);
}
}
/**
* Reloads all the Lo-Fi images in this Tab's WebContents.
* This version ignores the cache and reloads from the network.
*/
public void reloadLoFiImages() {
if (getWebContents() != null) {
getWebContents().reloadLoFiImages();
}
}
/**
* @return Whether or not the loading and rendering of the page is done.
*/
@VisibleForTesting
public boolean isLoadingAndRenderingDone() {
return isReady() && getProgress() >= CONSIDERED_READY_LOAD_PERCENTAGE;
}
/** Stop the current navigation. */
public void stopLoading() {
if (isLoading()) {
RewindableIterator<TabObserver> observers = getTabObservers();
while (observers.hasNext()) observers.next().onPageLoadFinished(this);
}
if (getWebContents() != null) getWebContents().stop();
}
/**
* @return a value between 0 and 100 reflecting what percentage of the page load is complete.
*/
public int getProgress() {
if (!isLoading()) return 100;
if (mBlimp) {
return mBlimpContentsObserver != null ? mBlimpContentsObserver.getMostRecentProgress()
: 0;
} else {
TabWebContentsDelegateAndroid delegate = getTabWebContentsDelegateAndroid();
return delegate != null ? delegate.getMostRecentProgress() : 0;
}
}
/**
* @return The background color of the tab.
*/
public int getBackgroundColor() {
if (mNativePage != null) return mNativePage.getBackgroundColor();
if (getWebContents() != null) return getWebContents().getBackgroundColor();
return Color.WHITE;
}
/**
* @return The current theme color based on the value passed from the web contents and the
* security state.
*/
public int getThemeColor() {
return mThemeColor;
}
/**
* Calculate the theme color based on if the page is native, the theme color changed, etc.
* @param didWebContentsThemeColorChange If the theme color of the web contents is known to have
* changed.
* @return The theme color that should be used for this tab.
*/
private int calculateThemeColor(boolean didWebContentsThemeColorChange) {
if (isNativePage()) return mNativePage.getThemeColor();
// Start by assuming the current theme color is that one that should be used. This will
// either be transparent, the last theme color, or the color restored from TabState.
int themeColor = mThemeColor;
// Only use the web contents for the theme color if it is known to have changed, This
// corresponds to the didChangeThemeColor in WebContentsObserver.
if (getWebContents() != null && didWebContentsThemeColorChange) {
themeColor = getWebContents().getThemeColor();
if (themeColor != 0 && !ColorUtils.isValidThemeColor(themeColor)) themeColor = 0;
}
// Apply theme color for Blimp tab.
if (isBlimpTab() && getBlimpContents() != null) {
themeColor = getBlimpContents().getThemeColor();
if (themeColor != 0 && !ColorUtils.isValidThemeColor(themeColor)) themeColor = 0;
}
// Do not apply the theme color if there are any security issues on the page.
int securityLevel = getSecurityLevel();
if (securityLevel == ConnectionSecurityLevel.DANGEROUS
|| securityLevel == ConnectionSecurityLevel.SECURITY_WARNING
|| securityLevel == ConnectionSecurityLevel.SECURE_WITH_POLICY_INSTALLED_CERT) {
themeColor = getDefaultThemeColor();
}
if (isShowingInterstitialPage()) themeColor = getDefaultThemeColor();
if (themeColor == Color.TRANSPARENT) themeColor = getDefaultThemeColor();
if (isIncognito()) themeColor = getDefaultThemeColor();
// Ensure there is no alpha component to the theme color as that is not supported in the
// dependent UI.
themeColor |= 0xFF000000;
return themeColor;
}
/**
* Determines if the theme color has changed and notifies the listeners if it has.
* @param didWebContentsThemeColorChange If the theme color of the web contents is known to have
* changed.
*/
void updateThemeColorIfNeeded(boolean didWebContentsThemeColorChange) {
int themeColor = calculateThemeColor(didWebContentsThemeColorChange);
if (themeColor == mThemeColor) return;
mThemeColor = themeColor;
RewindableIterator<TabObserver> observers = getTabObservers();
while (observers.hasNext()) {
observers.next().onDidChangeThemeColor(this, themeColor);
}
}
/**
* @return The web contents associated with this tab.
*/
public WebContents getWebContents() {
return mContentViewCore != null ? mContentViewCore.getWebContents() : null;
}
/**
* @return The {@link BlimpContents} associated with this tab, if in blimp mode.
*/
public BlimpContents getBlimpContents() {
return mBlimpContents;
}
/**
* @return Whether or not this tab is running in blimp mode.
*/
public boolean isBlimpTab() {
return mBlimp;
}
/**
* @return The profile associated with this tab.
*/
public Profile getProfile() {
if (mNativeTabAndroid == 0) return null;
return nativeGetProfileAndroid(mNativeTabAndroid);
}
/**
* For more information about the uniqueness of {@link #getId()} see comments on {@link Tab}.
* @see Tab
* @return The id representing this tab.
*/
@CalledByNative
public int getId() {
return mId;
}
/**
* @return Whether or not this tab is incognito.
*/
public boolean isIncognito() {
return mIncognito;
}
/**
* @return The {@link ContentViewCore} associated with the current page.
*/
public ContentViewCore getActiveContentViewCore() {
// TODO(jinsukkim): Remove this along with the refactoring for Blimp.
// See https://crbug.com/650515.
return mContentViewCore;
}
/**
* @return The {@link ContentViewCore} associated with the current page, or {@code null} if
* there is no current page or the current page is displayed using a native view.
*/
public ContentViewCore getContentViewCore() {
return mNativePage == null ? mContentViewCore : null;
}
/**
* @return The {@link NativePage} associated with the current page, or {@code null} if there is
* no current page or the current page is displayed using something besides
* {@link NativePage}.
*/
public NativePage getNativePage() {
return mNativePage;
}
/**
* @return Whether or not the {@link Tab} represents a {@link NativePage}.
*/
public boolean isNativePage() {
return mNativePage != null;
}
/**
* Set whether or not the {@link ContentViewCore} should be using a desktop user agent for the
* currently loaded page.
* @param useDesktop If {@code true}, use a desktop user agent. Otherwise use a mobile one.
* @param reloadOnChange Reload the page if the user agent has changed.
*/
public void setUseDesktopUserAgent(boolean useDesktop, boolean reloadOnChange) {
if (getWebContents() != null) {
getWebContents().getNavigationController().setUseDesktopUserAgent(
useDesktop, reloadOnChange);
}
}
/**
* @return Whether or not the {@link ContentViewCore} is using a desktop user agent.
*/
public boolean getUseDesktopUserAgent() {
return getWebContents() != null
&& getWebContents().getNavigationController().getUseDesktopUserAgent();
}
/**
* @return The current {@link ConnectionSecurityLevel} for the tab.
*/
// TODO(tedchoc): Remove this and transition all clients to use ToolbarModel directly.
public int getSecurityLevel() {
return SecurityStateModel.getSecurityLevelForWebContents(getWebContents());
}
/**
* @return The sync id of the tab if session sync is enabled, {@code 0} otherwise.
*/
@CalledByNative
private int getSyncId() {
return mSyncId;
}
/**
* @param syncId The sync id of the tab if session sync is enabled.
*/
@CalledByNative
private void setSyncId(int syncId) {
mSyncId = syncId;
}
/**
* @return An {@link ObserverList.RewindableIterator} instance that points to all of
* the current {@link TabObserver}s on this class. Note that calling
* {@link java.util.Iterator#remove()} will throw an
* {@link UnsupportedOperationException}.
*/
public ObserverList.RewindableIterator<TabObserver> getTabObservers() {
return mObservers.rewindableIterator();
}
/**
* @param client The {@link ContentViewClient} to be bound to any current or new
* {@link ContentViewCore}s associated with this {@link Tab}.
*/
private void setContentViewClient(ContentViewClient client) {
if (mContentViewClient == client) return;
ContentViewClient oldClient = mContentViewClient;
mContentViewClient = client;
if (mContentViewCore == null) return;
if (mContentViewClient != null) {
mContentViewCore.setContentViewClient(mContentViewClient);
} else if (oldClient != null) {
// We can't set a null client, but we should clear references to the last one.
mContentViewCore.setContentViewClient(new ContentViewClient());
}
}
/**
* Called on the foreground tab when the Activity showing the Tab gets started. This is called
* on both cold and warm starts.
*/
public void onActivityShown() {
if (isHidden()) {
show(TabSelectionType.FROM_USER);
} else {
// The visible Tab's renderer process may have died after the activity was paused.
// Ensure that it's restored appropriately.
loadIfNeeded();
}
// When resuming the activity, force an update to the fullscreen state to ensure a
// subactivity did not change the fullscreen configuration of this ChromeTab's renderer in
// the case where it was shared (i.e. via an EmbedContentViewActivity).
updateFullscreenEnabledState();
}
/**
* Called on the foreground tab when the Activity showing the Tab gets stopped.
*/
public void onActivityHidden() {
hide();
if (mTabUma != null) mTabUma.onActivityHidden();
}
/**
* @return Whether the tab is ready to display or it should be faded in as it loads.
*/
public boolean shouldStall() {
return (isFrozen() || needsReload())
&& !NativePageFactory.isNativePageUrl(getUrl(), isIncognito());
}
/**
* Prepares the tab to be shown. This method is supposed to be called before the tab is
* displayed. It restores the ContentView if it is not available after the cold start and
* reloads the tab if its renderer has crashed.
* @param type Specifies how the tab was selected.
*/
public final void show(TabSelectionType type) {
try {
TraceEvent.begin("Tab.show");
if (!isHidden()) return;
// Keep unsetting mIsHidden above loadIfNeeded(), so that we pass correct visibility
// when spawning WebContents in loadIfNeeded().
mIsHidden = false;
loadIfNeeded();
assert !isFrozen();
if (mContentViewCore != null) mContentViewCore.onShow();
if (mBlimpContents != null) mBlimpContents.show();
if (mTabUma != null) {
mTabUma.onShow(type, getTimestampMillis(),
computeMRURank(this, getTabModelSelector().getModel(mIncognito)));
}
// If the NativePage was frozen while in the background (see NativePageAssassin),
// recreate the NativePage now.
if (getNativePage() instanceof FrozenNativePage) {
maybeShowNativePage(getUrl(), true);
}
NativePageAssassin.getInstance().tabShown(this);
// If the page is still loading, update the progress bar (otherwise it would not show
// until the renderer notifies of new progress being made).
if (getProgress() < 100 && !isShowingInterstitialPage()) {
notifyLoadProgress(getProgress());
}
// Updating the timestamp has to happen after the showInternal() call since subclasses
// may use it for logging.
mTimestampMillis = System.currentTimeMillis();
for (TabObserver observer : mObservers) observer.onShown(this);
} finally {
TraceEvent.end("Tab.show");
}
}
/**
* Triggers the hiding logic for the view backing the tab.
*/
public final void hide() {
try {
TraceEvent.begin("Tab.hide");
if (isHidden()) return;
mIsHidden = true;
if (mContentViewCore != null) mContentViewCore.onHide();
if (mBlimpContents != null) mBlimpContents.hide();
// Clean up any fullscreen state that might impact other tabs.
if (mFullscreenManager != null) {
mFullscreenManager.setPersistentFullscreenMode(false);
}
if (mTabUma != null) mTabUma.onHide();
mTabRedirectHandler.clear();
// Allow this tab's NativePage to be frozen if it stays hidden for a while.
NativePageAssassin.getInstance().tabHidden(this);
for (TabObserver observer : mObservers) observer.onHidden(this);
} finally {
TraceEvent.end("Tab.hide");
}
}
/**
* Shows the given {@code nativePage} if it's not already showing.
* @param nativePage The {@link NativePage} to show.
*/
private void showNativePage(NativePage nativePage) {
if (mNativePage == nativePage) return;
NativePage previousNativePage = mNativePage;
mNativePage = nativePage;
pushNativePageStateToNavigationEntry();
// Notifying of theme color change before content change because some of
// the observers depend on the theme information being correct in
// onContentChanged().
updateThemeColorIfNeeded(false);
notifyContentChanged();
destroyNativePageInternal(previousNativePage);
}
/**
* Replaces the current NativePage with a empty stand-in for a NativePage. This can be used
* to reduce memory pressure.
*/
public void freezeNativePage() {
if (mNativePage == null || mNativePage instanceof FrozenNativePage) return;
assert mNativePage.getView().getParent() == null : "Cannot freeze visible native page";
mNativePage = FrozenNativePage.freeze(mNativePage);
}
/**
* Hides the current {@link NativePage}, if any, and shows the {@link ContentViewCore}'s view.
*/
protected void showRenderedPage() {
updateTitle();
if (mNativePage == null) return;
NativePage previousNativePage = mNativePage;
mNativePage = null;
notifyContentChanged();
destroyNativePageInternal(previousNativePage);
}
/**
* Initializes {@link Tab} with {@code webContents}. If {@code webContents} is {@code null} a
* new {@link WebContents} will be created for this {@link Tab}.
* @param webContents A {@link WebContents} object or {@code null} if one should be
* created.
* @param tabContentManager A {@link TabContentManager} instance or {@code null} if the web
* content will be managed/displayed manually.
* @param delegateFactory The {@link TabDelegateFactory} to be used for delegate creation.
* @param initiallyHidden Only used if {@code webContents} is {@code null}. Determines
* whether or not the newly created {@link WebContents} will be hidden
* or not.
* @param unfreeze Whether there should be an attempt to restore state at the end of
* the initialization.
*/
public final void initialize(WebContents webContents, TabContentManager tabContentManager,
TabDelegateFactory delegateFactory, boolean initiallyHidden, boolean unfreeze) {
try {
TraceEvent.begin("Tab.initialize");
mDelegateFactory = delegateFactory;
initializeNative();
RevenueStats.getInstance().tabCreated(this);
mBrowserControlsVisibilityDelegate =
mDelegateFactory.createBrowserControlsVisibilityDelegate(this);
mBlimp = BlimpClientContextFactory
.getBlimpClientContextForProfile(
Profile.getLastUsedProfile().getOriginalProfile())
.isBlimpEnabled()
&& !mIncognito;
// Attach the TabContentManager if we have one. This will bind this Tab's content layer
// to this manager.
// TODO(dtrainor): Remove this and move to a pull model instead of pushing the layer.
attachTabContentManager(tabContentManager);
// If there is a frozen WebContents state or a pending lazy load, don't create a new
// WebContents.
if (getFrozenContentsState() != null || getPendingLoadParams() != null) {
if (unfreeze) unfreezeContents();
return;
}
if (isBlimpTab() && getBlimpContents() == null) {
Profile profile = Profile.getLastUsedProfile();
if (mIncognito) profile = profile.getOffTheRecordProfile();
mBlimpContents = nativeInitBlimpContents(
mNativeTabAndroid, profile, mWindowAndroid.getNativePointer());
if (mBlimpContents != null) {
mBlimpContentsObserver = new TabBlimpContentsObserver(this);
mBlimpContents.addObserver(mBlimpContentsObserver);
} else {
mBlimp = false;
}
}
boolean creatingWebContents = webContents == null;
if (creatingWebContents) {
webContents = WarmupManager.getInstance().takeSpareWebContents(
isIncognito(), initiallyHidden);
if (webContents == null) {
webContents =
WebContentsFactory.createWebContents(isIncognito(), initiallyHidden);
}
}
ContentViewCore contentViewCore = ContentViewCore.fromWebContents(webContents);
if (contentViewCore == null) {
initContentViewCore(webContents);
} else {
setContentViewCore(contentViewCore);
}
if (!creatingWebContents && webContents.isLoadingToDifferentDocument()) {
didStartPageLoad(webContents.getUrl(), false);
}
getAppBannerManager().setIsEnabledForTab(mDelegateFactory.canShowAppBanners(this));
} finally {
if (mTimestampMillis == INVALID_TIMESTAMP) {
mTimestampMillis = System.currentTimeMillis();
}
TraceEvent.end("Tab.initialize");
}
}
/**
* Begins the tab reparenting process. Detaches the tab from its current activity and fires
* an Intent to reparent the tab into its new host activity.
*
* @param intent An optional intent with the desired component, flags, or extras to use when
* launching the new host activity. This intent's URI and action will be
* overriden. This may be null if no intent customization is needed.
* @param startActivityOptions Options to pass to {@link Activity#startActivity(Intent, Bundle)}
* @param finalizeCallback A callback that will be called after the tab is attached to the new
* host activity in {@link #attachAndFinishReparenting}.
* @return Whether reparenting succeeded. If false, the tab was not removed and the intent was
* not fired.
*/
public boolean detachAndStartReparenting(Intent intent, Bundle startActivityOptions,
Runnable finalizeCallback) {
ChromeActivity activity = getActivity();
if (activity == null) return false;
if (intent == null) intent = new Intent();
if (intent.getComponent() == null) {
intent.setClass(mThemedApplicationContext, ChromeLauncherActivity.class);
}
intent.setAction(Intent.ACTION_VIEW);
if (TextUtils.isEmpty(intent.getDataString())) intent.setData(Uri.parse(getUrl()));
if (isIncognito()) {
intent.putExtra(IntentHandler.EXTRA_OPEN_NEW_INCOGNITO_TAB, true);
}
IntentHandler.addTrustedIntentExtras(intent, activity);
if (ChromeFeatureList.isEnabled(ChromeFeatureList.TAB_REPARENTING)) {
TabModelSelector tabModelSelector = getTabModelSelector();
if (tabModelSelector == null) return false;
mIsDetachedForReparenting = true;
// Add the tab to AsyncTabParamsManager before removing it from the current model to
// ensure the global count of tabs is correct. See crbug.com/611806.
intent.putExtra(IntentHandler.EXTRA_TAB_ID, mId);
AsyncTabParamsManager.add(mId,
new TabReparentingParams(this, intent, finalizeCallback));
tabModelSelector.getModel(mIncognito).removeTab(this);
// TODO(yusufo): We can't call updateWindowAndroid here and set mWindowAndroid to null
// because many code paths (including navigation) expect the tab to always be associated
// with an activity, and will crash. crbug.com/657007
if (mContentViewCore != null) mContentViewCore.updateWindowAndroid(null);
attachTabContentManager(null);
}
activity.startActivity(intent, startActivityOptions);
return true;
}
/**
* Finishes the tab reparenting process. Attaches the tab to the new activity, and updates the
* tab and related objects to reference the new activity. This updates many delegates inside the
* tab and {@link ContentViewCore} both on java and native sides.
*
* @param activity The new activity this tab should be associated with.
* @param tabDelegateFactory The new delegate factory this tab should be using.
* @Param reparentingParams The TabReparentingParams associated with this reparenting process.
*/
public void attachAndFinishReparenting(ChromeActivity activity,
TabDelegateFactory tabDelegateFactory, TabReparentingParams reparentingParams) {
// TODO(yusufo): Share these calls with the construction related calls.
// crbug.com/590281
updateWindowAndroid(activity.getWindowAndroid());
// Update for the controllers that need the Compositor from the new Activity.
attachTabContentManager(activity.getTabContentManager());
mFullscreenManager = activity.getFullscreenManager();
activity.getCompositorViewHolder().prepareForTabReparenting();
// Update the delegate factory, then recreate and propagate all delegates.
mDelegateFactory = tabDelegateFactory;
mWebContentsDelegate = mDelegateFactory.createWebContentsDelegate(this);
nativeUpdateDelegates(mNativeTabAndroid,
mWebContentsDelegate, mDelegateFactory.createContextMenuPopulator(this));
mBrowserControlsVisibilityDelegate =
mDelegateFactory.createBrowserControlsVisibilityDelegate(this);
setInterceptNavigationDelegate(mDelegateFactory.createInterceptNavigationDelegate(this));
getAppBannerManager().setIsEnabledForTab(mDelegateFactory.canShowAppBanners(this));
reparentingParams.finalizeTabReparenting();
mIsDetachedForReparenting = false;
// Reload the NativePage (if any), since the old NativePage has a reference to the old
// activity.
maybeShowNativePage(getUrl(), true);
mIsTabStateDirty = true;
for (TabObserver observer : mObservers) {
observer.onReparentingFinished(this);
}
}
/**
* Update and propagate the new WindowAndroid.
* @param windowAndroid The WindowAndroid to propagate.
*/
public void updateWindowAndroid(WindowAndroid windowAndroid) {
// TODO(yusufo): mWindowAndroid can never be null until crbug.com/657007 is fixed.
assert windowAndroid != null;
mWindowAndroid = windowAndroid;
if (mContentViewCore != null) mContentViewCore.updateWindowAndroid(mWindowAndroid);
}
/**
* @return Whether the tab is detached from its Activity and {@link WindowAndroid} for
* reparenting. Certain functionalities will not work until it is attached to a new activity
* with {@link Tab#attachAndFinishReparenting(
* ChromeActivity, TabDelegateFactory, TabReparentingParams)}.
*/
public boolean isDetachedForReparenting() {
return mIsDetachedForReparenting;
}
/**
* Attach the content layer for this tab to the given {@link TabContentManager}.
* @param tabContentManager {@link TabContentManager} to attach to.
*/
public void attachTabContentManager(TabContentManager tabContentManager) {
if (mNativeTabAndroid == 0) return;
nativeAttachToTabContentManager(mNativeTabAndroid, tabContentManager);
}
/**
* @return The delegate factory for testing purposes only.
*/
public TabDelegateFactory getDelegateFactory() {
return mDelegateFactory;
}
public View getContentView() {
if (!isNativePage()) {
return getView();
} else if (mBlimpContents != null) {
return mBlimpContents.getView();
} else if (mContentViewCore != null) {
return mContentViewCore.getContainerView();
}
return null;
}
/**
* Called when a navigation begins and no navigation was in progress
* @param toDifferentDocument Whether this navigation will transition between
* documents (i.e., not a fragment navigation or JS History API call).
*/
protected void onLoadStarted(boolean toDifferentDocument) {
if (toDifferentDocument) mIsLoading = true;
for (TabObserver observer : mObservers) observer.onLoadStarted(this, toDifferentDocument);
}
/**
* Called when a navigation completes and no other navigation is in progress.
*/
protected void onLoadStopped() {
// mIsLoading should only be false if this is a same-document navigation.
boolean toDifferentDocument = mIsLoading;
mIsLoading = false;
for (TabObserver observer : mObservers) observer.onLoadStopped(this, toDifferentDocument);
}
/**
* Called when a page has started loading.
* @param validatedUrl URL being loaded.
* @param showingErrorPage Whether an error page is being shown.
*/
protected void didStartPageLoad(String validatedUrl, boolean showingErrorPage) {
updateTitle();
removeSadTabIfPresent();
if (mIsRendererUnresponsive) handleRendererResponsive();
if (mTabUma != null) mTabUma.onPageLoadStarted();
for (TabObserver observer : mObservers) observer.onPageLoadStarted(this, validatedUrl);
}
/**
* Called when a page has finished loading.
*/
protected void didFinishPageLoad() {
mIsBeingRestored = false;
mIsTabStateDirty = true;
updateTitle();
updateFullscreenEnabledState();
if (!isNativePage()) {
RecordHistogram.recordBooleanHistogram(
"Navigation.IsMobileOptimized", mContentViewCore.getIsMobileOptimizedHint());
}
if (mTabUma != null) mTabUma.onPageLoadFinished();
for (TabObserver observer : mObservers) observer.onPageLoadFinished(this);
}
/**
* Called when a page has failed loading.
* @param errorCode The error code causing the page to fail loading.
*/
protected void didFailPageLoad(int errorCode) {
mIsBeingRestored = false;
if (mTabUma != null) mTabUma.onLoadFailed(errorCode);
for (TabObserver observer : mObservers) observer.onPageLoadFailed(this, errorCode);
}
/**
* Builds the native counterpart to this class. Meant to be overridden by subclasses to build
* subclass native counterparts instead. Subclasses should not call this via super and instead
* rely on the native class to create the JNI association.
*
* TODO(dfalcantara): Make this function harder to access.
*/
public void initializeNative() {
if (mNativeTabAndroid == 0) nativeInit();
assert mNativeTabAndroid != 0;
mIsInitialized = true;
}
/**
* Creates and initializes the {@link ContentViewCore}.
*
* @param webContents The WebContents object that will be used to build the
* {@link ContentViewCore}.
*/
protected void initContentViewCore(WebContents webContents) {
setContentViewCore(createContentViewCore(webContents));
}
private ContentViewCore createContentViewCore(WebContents webContents) {
ContentViewCore cvc = new ContentViewCore(mThemedApplicationContext, PRODUCT_VERSION);
ContentView cv = ContentView.createContentView(mThemedApplicationContext, cvc);
cv.setContentDescription(mThemedApplicationContext.getResources().getString(
R.string.accessibility_content_view));
cvc.initialize(ViewAndroidDelegate.createBasicDelegate(cv), cv, webContents,
getWindowAndroid());
ChromeActionModeCallback actionModeCallback = new ChromeActionModeCallback(
mThemedApplicationContext, this, cvc.getActionModeCallbackHelper());
cvc.setActionModeCallback(actionModeCallback);
return cvc;
}
/**
* Completes the {@link ContentViewCore} specific initialization around a native WebContents
* pointer. {@link #getNativePage()} will still return the {@link NativePage} if there is one.
* All initialization that needs to reoccur after a web contents swap should be added here.
* <p />
* NOTE: If you attempt to pass a native WebContents that does not have the same incognito
* state as this tab this call will fail.
*
* @param cvc The content view core that needs to be set as active view for the tab.
*/
private void setContentViewCore(ContentViewCore cvc) {
try {
TraceEvent.begin("ChromeTab.setContentViewCore");
NativePage previousNativePage = mNativePage;
mNativePage = null;
destroyNativePageInternal(previousNativePage);
if (mContentViewCore != null) {
mContentViewCore.setObscuredByAnotherView(false);
}
mContentViewCore = cvc;
cvc.getContainerView().setOnHierarchyChangeListener(this);
cvc.getContainerView().setOnSystemUiVisibilityChangeListener(this);
// Wrap the ContentView in a FrameLayout, which will contain both the ContentView and
// the InfoBarContainer. The alternative -- placing the InfoBarContainer inside the
// ContentView -- causes problems since then the ContentView would contain both real
// views (the infobars) and virtual views (the web page elements), which breaks Android
// accessibility. http://crbug.com/416663
if (mContentViewParent != null) {
assert false;
mContentViewParent.removeAllViews();
}
mContentViewParent = new TabContentViewParent(mThemedApplicationContext, this);
mContentViewParent.addView(cvc.getContainerView(), 0, new FrameLayout.LayoutParams(
LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT));
mWebContentsDelegate = mDelegateFactory.createWebContentsDelegate(this);
mWebContentsObserver =
new TabWebContentsObserver(mContentViewCore.getWebContents(), this);
if (mContentViewClient != null) {
mContentViewCore.setContentViewClient(mContentViewClient);
}
mDownloadDelegate = new ChromeDownloadDelegate(mThemedApplicationContext, this);
assert mNativeTabAndroid != 0;
nativeInitWebContents(mNativeTabAndroid, mIncognito, mContentViewCore.getWebContents(),
mWebContentsDelegate,
new TabContextMenuPopulator(
mDelegateFactory.createContextMenuPopulator(this), this));
// In the case where restoring a Tab or showing a prerendered one we already have a
// valid infobar container, no need to recreate one.
if (mInfoBarContainer == null) {
// The InfoBarContainer needs to be created after the ContentView has been natively
// initialized.
mInfoBarContainer = new InfoBarContainer(
mThemedApplicationContext, getId(), mContentViewParent, this);
} else {
mInfoBarContainer.onParentViewChanged(getId(), mContentViewParent);
}
mInfoBarContainer.setContentViewCore(mContentViewCore);
mSwipeRefreshHandler = new SwipeRefreshHandler(mThemedApplicationContext, this);
updateThemeColorIfNeeded(false);
notifyContentChanged();
// For browser tabs, we want to set accessibility focus to the page
// when it loads. This is not the default behavior for embedded
// web views.
mContentViewCore.setShouldSetAccessibilityFocusOnPageLoad(true);
setInterceptNavigationDelegate(mDelegateFactory.createInterceptNavigationDelegate(
this));
if (mGestureStateListener == null) {
mGestureStateListener = createGestureStateListener();
}
cvc.addGestureStateListener(mGestureStateListener);
} finally {
TraceEvent.end("ChromeTab.setContentViewCore");
}
}
/**
* Shows a native page for url if it's a valid chrome-native URL. Otherwise, does nothing.
* @param url The url of the current navigation.
* @param forceReload If true, the current native page (if any) will not be reused, even if it
* matches the URL.
* @return True, if a native page was displayed for url.
*/
boolean maybeShowNativePage(String url, boolean forceReload) {
// While detached for reparenting we don't have an owning Activity, or TabModelSelector,
// so we can't create the native page. The native page will be created once reparenting is
// completed.
if (mIsDetachedForReparenting) return false;
NativePage candidateForReuse = forceReload ? null : getNativePage();
NativePage nativePage = NativePageFactory.createNativePageForURL(url, candidateForReuse,
this, getTabModelSelector(), getActivity());
if (nativePage != null) {
showNativePage(nativePage);
notifyPageTitleChanged();
notifyFaviconChanged();
return true;
}
return false;
}
/**
* Notify observers when provisional load starts.
* @param isMainFrame Whether the load is happening for the main frame.
* @param validatedUrl The validated URL that is being navigated to.
*/
void handleDidStartProvisionalLoadForFrame(boolean isMainFrame, String validatedUrl) {
RewindableIterator<TabObserver> observers = getTabObservers();
while (observers.hasNext()) {
observers.next().onDidStartProvisionalLoadForFrame(this, isMainFrame, validatedUrl);
}
}
/**
* Update internal Tab state when provisional load gets committed.
* @param url The URL that was loaded.
* @param transitionType The transition type to the current URL.
*/
void handleDidCommitProvisonalLoadForFrame(String url, int transitionType) {
mIsNativePageCommitPending = false;
boolean isReload = (transitionType == PageTransition.RELOAD);
if (!maybeShowNativePage(url, isReload)) {
showRenderedPage();
}
if (getInterceptNavigationDelegate() != null) {
getInterceptNavigationDelegate().maybeUpdateNavigationHistory();
}
}
/**
* Constructs and shows a sad tab (Aw, Snap!).
*/
protected void showSadTab() {
if (getContentViewCore() != null) {
OnClickListener suggestionAction = new OnClickListener() {
@Override
public void onClick(View view) {
Activity activity = mWindowAndroid.getActivity().get();
assert activity != null;
HelpAndFeedback.getInstance(activity).show(activity,
activity.getString(R.string.help_context_sad_tab),
Profile.getLastUsedProfile(), null);
}
};
OnClickListener reloadButtonAction = new OnClickListener() {
@Override
public void onClick(View view) {
reload();
}
};
// Make sure we are not adding the "Aw, snap" view over an existing one.
assert mSadTabView == null;
mSadTabView = SadTabViewFactory.createSadTabView(
mThemedApplicationContext, suggestionAction, reloadButtonAction);
// Show the sad tab inside ContentView.
getContentViewCore().getContainerView().addView(
mSadTabView, new FrameLayout.LayoutParams(
LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT));
notifyContentChanged();
}
FullscreenManager fullscreenManager = getFullscreenManager();
if (fullscreenManager != null) {
fullscreenManager.setPositionsForTabToNonFullscreen();
}
}
/**
* Removes the sad tab view if present.
*/
private void removeSadTabIfPresent() {
if (isShowingSadTab()) {
getContentViewCore().getContainerView().removeView(mSadTabView);
notifyContentChanged();
}
mSadTabView = null;
}
/**
* @return Whether or not the sad tab is showing.
*/
public boolean isShowingSadTab() {
return mSadTabView != null && getContentViewCore() != null
&& mSadTabView.getParent() == getContentViewCore().getContainerView();
}
/**
* Calls onContentChanged on all TabObservers and updates accessibility visibility.
*/
private void notifyContentChanged() {
for (TabObserver observer : mObservers) observer.onContentChanged(this);
updateAccessibilityVisibility();
}
/**
* Cleans up all internal state, destroying any {@link NativePage} or {@link ContentViewCore}
* currently associated with this {@link Tab}. This also destroys the native counterpart
* to this class, which means that all subclasses should erase their native pointers after
* this method is called. Once this call is made this {@link Tab} should no longer be used.
*/
public void destroy() {
mIsInitialized = false;
// Update the title before destroying the tab. http://b/5783092
updateTitle();
if (mTabUma != null) mTabUma.onDestroy();
for (TabObserver observer : mObservers) observer.onDestroyed(this);
mObservers.clear();
NativePage currentNativePage = mNativePage;
mNativePage = null;
destroyNativePageInternal(currentNativePage);
destroyContentViewCore(true);
// Native part of BlimpContents is destroyed on the subsequent call to nativeDestroy.
mBlimpContents = null;
// Destroys the native tab after destroying the ContentView but before destroying the
// InfoBarContainer. The native tab should be destroyed before the infobar container as
// destroying the native tab cleanups up any remaining infobars. The infobar container
// expects all infobars to be cleaned up before its own destruction.
assert mNativeTabAndroid != 0;
nativeDestroy(mNativeTabAndroid);
assert mNativeTabAndroid == 0;
if (mInfoBarContainer != null) {
mInfoBarContainer.destroy();
mInfoBarContainer = null;
}
mPreviousTopControlsOffsetY = Float.NaN;
mPreviousBottomControlsOffsetY = Float.NaN;
mPreviousContentOffsetY = Float.NaN;
mNeedsReload = false;
}
/**
* @return Whether or not this Tab has a live native component. This will be true prior to
* {@link #initializeNative()} being called or after {@link #destroy()}.
*/
public boolean isInitialized() {
return mIsInitialized;
}
/**
* @return The URL associated with the tab.
*/
@CalledByNative
public String getUrl() {
String url = getWebContents() != null ? getWebContents().getUrl() : "";
if (isBlimpTab() && getBlimpContents() != null) {
url = getBlimpContents().getNavigationController().getUrl();
}
// If we have a ContentView, or a NativePage, or the url is not empty, we have a WebContents
// so cache the WebContent's url. If not use the cached version.
if (getContentViewCore() != null || getNativePage() != null || !TextUtils.isEmpty(url)) {
mUrl = url;
}
return mUrl != null ? mUrl : "";
}
/**
* @return The tab title.
*/
@CalledByNative
public String getTitle() {
if (mTitle == null) updateTitle();
return mTitle;
}
void updateTitle() {
if (isFrozen()) return;
// When restoring the tabs, the title will no longer be populated, so request it from the
// ContentViewCore or NativePage (if present).
String title = "";
if (mNativePage != null) {
title = mNativePage.getTitle();
} else if (getBlimpContents() != null) {
title = getBlimpContents().getNavigationController().getTitle();
} else if (getWebContents() != null) {
title = getWebContents().getTitle();
}
updateTitle(title);
}
/**
* Cache the title for the current page.
*
* {@link ContentViewClient#onUpdateTitle} is unreliable, particularly for navigating backwards
* and forwards in the history stack, so pull the correct title whenever the page changes.
* onUpdateTitle is only called when the title of a navigation entry changes. When the user goes
* back a page the navigation entry exists with the correct title, thus the title is not
* actually changed, and no notification is sent.
* @param title Title of the page.
*/
private void updateTitle(String title) {
if (TextUtils.equals(mTitle, title)) return;
mIsTabStateDirty = true;
mTitle = title;
mIsTitleDirectionRtl = LocalizationUtils.getFirstStrongCharacterDirection(title)
== LocalizationUtils.RIGHT_TO_LEFT;
notifyPageTitleChanged();
}
private void notifyPageTitleChanged() {
RewindableIterator<TabObserver> observers = getTabObservers();
while (observers.hasNext()) {
observers.next().onTitleUpdated(this);
}
}
/**
* Notify the observers that the load progress has changed.
* @param progress The current percentage of progress.
*/
protected void notifyLoadProgress(int progress) {
for (TabObserver observer : mObservers) observer.onLoadProgressChanged(Tab.this, progress);
}
private void notifyFaviconChanged() {
RewindableIterator<TabObserver> observers = getTabObservers();
while (observers.hasNext()) {
observers.next().onFaviconUpdated(this, null);
}
}
/**
* @return True if the tab title should be displayed from right to left.
*/
public boolean isTitleDirectionRtl() {
return mIsTitleDirectionRtl;
}
/**
* @return The bitmap of the favicon scaled to 16x16dp. null if no favicon
* is specified or it requires the default favicon.
*/
public Bitmap getFavicon() {
// If we have no content or a native page, return null.
if (getContentViewCore() == null) return null;
// Use the cached favicon only if the page wasn't changed.
if (mFavicon != null && mFaviconUrl != null && mFaviconUrl.equals(getUrl())) {
return mFavicon;
}
return nativeGetFavicon(mNativeTabAndroid);
}
/**
* Loads the tab if it's not loaded (e.g. because it was killed in background).
* This will trigger a regular load for tabs with pending lazy first load (tabs opened in
* background on low-memory devices).
* @return true iff the Tab handled the request.
*/
@CalledByNative
public boolean loadIfNeeded() {
if (getActivity() == null) {
Log.e(TAG, "Tab couldn't be loaded because Context was null.");
return false;
}
if (mPendingLoadParams != null) {
assert isFrozen();
initContentViewCore(WebContentsFactory.createWebContents(isIncognito(), isHidden()));
loadUrl(mPendingLoadParams);
mPendingLoadParams = null;
return true;
}
restoreIfNeeded();
return true;
}
/**
* Loads a tab that was already loaded but since then was lost. This happens either when we
* unfreeze the tab from serialized state or when we reload a tab that crashed. In both cases
* the load codepath is the same (run in loadIfNecessary()) and the same caching policies of
* history load are used.
*/
private final void restoreIfNeeded() {
try {
TraceEvent.begin("Tab.restoreIfNeeded");
if (isFrozen() && mFrozenContentsState != null) {
// Restore is needed for a tab that is loaded for the first time. WebContents will
// be restored from a saved state.
unfreezeContents();
} else if (mNeedsReload) {
// Restore is needed for a tab that was previously loaded, but its renderer was
// killed by the oom killer.
mNeedsReload = false;
requestRestoreLoad();
} else {
// No restore needed.
return;
}
loadIfNecessary();
mIsBeingRestored = true;
if (mTabUma != null) mTabUma.onRestoreStarted();
} finally {
TraceEvent.end("Tab.restoreIfNeeded");
}
}
/**
* Issues a fake notification about the renderer being killed.
*
* @param wasOomProtected True if the renderer was protected from the OS out-of-memory killer
* (e.g. renderer for the currently selected tab)
*/
@VisibleForTesting
public void simulateRendererKilledForTesting(boolean wasOomProtected) {
if (mWebContentsObserver != null) {
mWebContentsObserver.renderProcessGone(wasOomProtected);
}
}
/**
* Restores the WebContents from its saved state. This should only be called if the tab is
* frozen with a saved TabState, and NOT if it was frozen for a lazy load.
* @return Whether or not the restoration was successful.
*/
protected boolean unfreezeContents() {
try {
TraceEvent.begin("Tab.unfreezeContents");
assert mFrozenContentsState != null;
assert getContentViewCore() == null;
WebContents webContents =
mFrozenContentsState.restoreContentsFromByteBuffer(isHidden());
if (webContents == null) {
// State restore failed, just create a new empty web contents as that is the best
// that can be done at this point. TODO(jcivelli) http://b/5910521 - we should show
// an error page instead of a blank page in that case (and the last loaded URL).
webContents = WebContentsFactory.createWebContents(isIncognito(), isHidden());
mTabUma = new TabUma(TabCreationState.FROZEN_ON_RESTORE_FAILED);
mFailedToRestore = true;
}
mFrozenContentsState = null;
initContentViewCore(webContents);
if (mFailedToRestore) {
String url = TextUtils.isEmpty(mUrl) ? UrlConstants.NTP_URL : mUrl;
loadUrl(new LoadUrlParams(url, PageTransition.GENERATED));
}
return !mFailedToRestore;
} finally {
TraceEvent.end("Tab.unfreezeContents");
}
}
/**
* @return Whether the unfreeze attempt from a saved tab state failed.
*/
public boolean didFailToRestore() {
return mFailedToRestore;
}
/**
* @return Whether or not the tab is hidden.
*/
public boolean isHidden() {
return mIsHidden;
}
/**
* @return Whether or not the tab is in the closing process.
*/
public boolean isClosing() {
return mIsClosing;
}
/**
* @param closing Whether or not the tab is in the closing process.
*/
public void setClosing(boolean closing) {
mIsClosing = closing;
for (TabObserver observer : mObservers) observer.onClosingStateChanged(this, closing);
}
/**
* @return Whether the Tab needs to be reloaded. {@see #mNeedsReload}
*/
public boolean needsReload() {
return mNeedsReload;
}
/**
* Set whether the Tab needs to be reloaded. {@see #mNeedsReload}
*/
protected void setNeedsReload(boolean needsReload) {
mNeedsReload = needsReload;
}
/**
* @return true iff the tab is loading and an interstitial page is not showing.
*/
public boolean isLoading() {
return mIsLoading && !isShowingInterstitialPage();
}
/**
* @return true iff the tab is performing a restore page load.
*/
public boolean isBeingRestored() {
return mIsBeingRestored;
}
/**
* @return The id of the tab that caused this tab to be opened.
*/
public int getParentId() {
return mParentId;
}
/**
* @return Whether the tab should be grouped with its parent tab (true by default).
*/
public boolean isGroupedWithParent() {
return mGroupedWithParent;
}
/**
* Sets whether the tab should be grouped with its parent tab.
*
* @param groupedWithParent The new value.
* @see #isGroupedWithParent
*/
public void setGroupedWithParent(boolean groupedWithParent) {
mGroupedWithParent = groupedWithParent;
}
private void destroyNativePageInternal(NativePage nativePage) {
if (nativePage == null) return;
assert nativePage != mNativePage : "Attempting to destroy active page.";
nativePage.destroy();
}
/**
* Called when the background color for the content changes.
* @param color The current for the background.
*/
protected void onBackgroundColorChanged(int color) {
for (TabObserver observer : mObservers) observer.onBackgroundColorChanged(this, color);
}
/**
* Destroys the current {@link ContentViewCore}.
* @param deleteNativeWebContents Whether or not to delete the native WebContents pointer.
*/
private final void destroyContentViewCore(boolean deleteNativeWebContents) {
if (mContentViewCore == null) return;
mContentViewCore.getContainerView().setOnHierarchyChangeListener(null);
mContentViewCore.getContainerView().setOnSystemUiVisibilityChangeListener(null);
if (mGestureStateListener != null) {
mContentViewCore.removeGestureStateListener(mGestureStateListener);
}
if (mInfoBarContainer != null && mInfoBarContainer.getParent() != null) {
mInfoBarContainer.removeFromParentView();
mInfoBarContainer.setContentViewCore(null);
}
if (mSwipeRefreshHandler != null) {
mSwipeRefreshHandler.destroy();
mSwipeRefreshHandler = null;
}
mContentViewParent = null;
mContentViewCore.destroy();
mContentViewCore = null;
mWebContentsDelegate = null;
if (mWebContentsObserver != null) {
mWebContentsObserver.destroy();
mWebContentsObserver = null;
}
assert mNativeTabAndroid != 0;
nativeDestroyWebContents(mNativeTabAndroid, deleteNativeWebContents);
}
/**
* A helper method to allow subclasses to handle the Instant support
* disabled event.
*/
@CalledByNative
private void onWebContentsInstantSupportDisabled() {
for (TabObserver observer : mObservers) observer.onWebContentsInstantSupportDisabled();
}
/**
* @return The {@link WindowAndroid} associated with this {@link Tab}.
*/
public WindowAndroid getWindowAndroid() {
return mWindowAndroid;
}
/**
* @return The current {@link TabWebContentsDelegateAndroid} instance.
*/
public TabWebContentsDelegateAndroid getTabWebContentsDelegateAndroid() {
return mWebContentsDelegate;
}
@CalledByNative
protected void onFaviconAvailable(Bitmap icon) {
if (icon == null) return;
String url = getUrl();
boolean pageUrlChanged = !url.equals(mFaviconUrl);
// This method will be called multiple times if the page has more than one favicon.
// we are trying to use the 16x16 DP icon here, Bitmap.createScaledBitmap will return
// the origin bitmap if it is already 16x16 DP.
if (pageUrlChanged || (icon.getWidth() == mIdealFaviconSize
&& icon.getHeight() == mIdealFaviconSize)) {
mFavicon = Bitmap.createScaledBitmap(icon, mIdealFaviconSize, mIdealFaviconSize, true);
mFaviconUrl = url;
}
for (TabObserver observer : mObservers) observer.onFaviconUpdated(this, icon);
}
/**
* Called when the navigation entry containing the history item changed,
* for example because of a scroll offset or form field change.
*/
@CalledByNative
private void onNavEntryChanged() {
mIsTabStateDirty = true;
}
/**
* Returns the SnackbarManager for the activity that owns this Tab, if any. May
* return null.
*/
public SnackbarManager getSnackbarManager() {
if (getActivity() == null) return null;
return getActivity().getSnackbarManager();
}
/**
* @return The native pointer representing the native side of this {@link Tab} object.
*/
@CalledByNative
private long getNativePtr() {
return mNativeTabAndroid;
}
/** This is currently called when committing a pre-rendered page. */
@VisibleForTesting
@CalledByNative
public void swapWebContents(
WebContents webContents, boolean didStartLoad, boolean didFinishLoad) {
ContentViewCore cvc = createContentViewCore(webContents);
swapContentViewCore(cvc, false, didStartLoad, didFinishLoad);
}
/**
* Called to swap out the current view with the one passed in.
*
* @param newContentViewCore The content view that should be swapped into the tab.
* @param deleteOldNativeWebContents Whether to delete the native web
* contents of old view.
* @param didStartLoad Whether
* WebContentsObserver::DidStartProvisionalLoadForFrame() has
* already been called.
* @param didFinishLoad Whether WebContentsObserver::DidFinishLoad() has
* already been called.
*/
public void swapContentViewCore(ContentViewCore newContentViewCore,
boolean deleteOldNativeWebContents, boolean didStartLoad, boolean didFinishLoad) {
int originalWidth = 0;
int originalHeight = 0;
if (mContentViewCore != null) {
originalWidth = mContentViewCore.getViewportWidthPix();
originalHeight = mContentViewCore.getViewportHeightPix();
mContentViewCore.onHide();
}
Rect bounds = new Rect();
if (originalWidth == 0 && originalHeight == 0) {
bounds = ExternalPrerenderHandler.estimateContentSize(
(Application) getApplicationContext(), false);
originalWidth = bounds.right - bounds.left;
originalHeight = bounds.bottom - bounds.top;
}
destroyContentViewCore(deleteOldNativeWebContents);
NativePage previousNativePage = mNativePage;
mNativePage = null;
// Size of the new ContentViewCore is zero at this point. If we don't call onSizeChanged(),
// next onShow() call would send a resize message with the current ContentViewCore size
// (zero) to the renderer process, although the new size will be set soon.
// However, this size fluttering may confuse Blink and rendered result can be broken
// (see http://crbug.com/340987).
newContentViewCore.onSizeChanged(originalWidth, originalHeight, 0, 0);
if (!bounds.isEmpty()) {
newContentViewCore.onPhysicalBackingSizeChanged(bounds.right, bounds.bottom);
}
newContentViewCore.onShow();
setContentViewCore(newContentViewCore);
mContentViewCore.attachImeAdapter();
// If the URL has already committed (e.g. prerendering), tell process management logic that
// it can rely on the process visibility signal for binding management.
// TODO: Call ChildProcessLauncher#determinedVisibility() at a more intuitive time.
// See crbug.com/537671
if (!mContentViewCore.getWebContents().getLastCommittedUrl().equals("")) {
ChildProcessLauncher.determinedVisibility(mContentViewCore.getCurrentRenderProcessId());
}
destroyNativePageInternal(previousNativePage);
for (TabObserver observer : mObservers) {
observer.onWebContentsSwapped(this, didStartLoad, didFinishLoad);
}
}
@CalledByNative
private void clearNativePtr() {
assert mNativeTabAndroid != 0;
mNativeTabAndroid = 0;
}
@CalledByNative
private void setNativePtr(long nativePtr) {
assert mNativeTabAndroid == 0;
mNativeTabAndroid = nativePtr;
}
/**
* @return Whether the TabState representing this Tab has been updated.
*/
public boolean isTabStateDirty() {
return mIsTabStateDirty;
}
/**
* Set whether the TabState representing this Tab has been updated.
* @param isDirty Whether the Tab's state has changed.
*/
public void setIsTabStateDirty(boolean isDirty) {
mIsTabStateDirty = isDirty;
}
/**
* @return Whether the Tab should be preserved in Android's Recents list when users hit "back".
*/
public boolean shouldPreserve() {
return mShouldPreserve;
}
/**
* Sets whether the Tab should be preserved in Android's Recents list when users hit "back".
* @param preserve Whether the tab should be preserved.
*/
public void setShouldPreserve(boolean preserve) {
mShouldPreserve = preserve;
}
/**
* @return Whether there are pending {@link LoadUrlParams} associated with the tab. This
* indicates the tab was created for lazy load.
*/
public boolean hasPendingLoadParams() {
return mPendingLoadParams != null;
}
/**
* @return Parameters that should be used for a lazily loaded Tab. May be null.
*/
private LoadUrlParams getPendingLoadParams() {
return mPendingLoadParams;
}
/**
* @param params Parameters that should be used for a lazily loaded Tab.
*/
private void setPendingLoadParams(LoadUrlParams params) {
mPendingLoadParams = params;
mUrl = params.getUrl();
}
/**
* @see #setAppAssociatedWith(String) for more information.
* TODO(aurimas): investigate reducing the visibility of this method after TabModel refactoring.
*
* @return The id of the application associated with that tab (null if not
* associated with an app).
*/
public String getAppAssociatedWith() {
return mAppAssociatedWith;
}
/**
* Associates this tab with the external app with the specified id. Once a Tab is associated
* with an app, it is reused when a new page is opened from that app (unless the user typed in
* the location bar or in the page, in which case the tab is dissociated from any app)
* TODO(aurimas): investigate reducing the visibility of this method after TabModel refactoring.
*
* @param appId The ID of application associated with the tab.
*/
public void setAppAssociatedWith(String appId) {
mAppAssociatedWith = appId;
}
/**
* @return See {@link #mTimestampMillis}.
*/
private long getTimestampMillis() {
return mTimestampMillis;
}
/**
* Restores a tab either frozen or from state.
* TODO(aurimas): investigate reducing the visibility of this method after TabModel refactoring.
*/
public void createHistoricalTab() {
if (!isFrozen()) {
nativeCreateHistoricalTab(mNativeTabAndroid);
} else if (mFrozenContentsState != null) {
mFrozenContentsState.createHistoricalTab();
}
}
/**
* @return The reason the Tab was launched.
*/
public TabLaunchType getLaunchType() {
return mLaunchType;
}
/**
* @return true iff the tab doesn't hold a live page. This happens before initialize() and when
* the tab holds frozen WebContents state that is yet to be inflated.
*/
@VisibleForTesting
public boolean isFrozen() {
return getNativePage() == null && getContentViewCore() == null;
}
/**
* @return An instance of a {@link FullscreenManager}.
*/
protected FullscreenManager getFullscreenManager() {
return mFullscreenManager;
}
/**
* Called when offset values related with fullscreen functionality has been changed by the
* compositor.
* @param topControlsOffsetY The Y offset of the top controls in physical pixels.
* @param bottomControlsOffsetY The Y offset of the bottom controls in physical pixels.
* @param contentOffsetY The Y offset of the content in physical pixels.
* @param isNonFullscreenPage Whether a current page is non-fullscreen page or not.
*/
private void onOffsetsChanged(
float topControlsOffsetY, float bottomControlsOffsetY, float contentOffsetY,
boolean isNonFullscreenPage) {
mPreviousTopControlsOffsetY = topControlsOffsetY;
mPreviousBottomControlsOffsetY = bottomControlsOffsetY;
mPreviousContentOffsetY = contentOffsetY;
if (mFullscreenManager == null) return;
if (isNonFullscreenPage || isNativePage()) {
mFullscreenManager.setPositionsForTabToNonFullscreen();
} else {
mFullscreenManager.setPositionsForTab(topControlsOffsetY, bottomControlsOffsetY,
contentOffsetY);
}
TabModelImpl.setActualTabSwitchLatencyMetricRequired();
}
/**
* Push state about whether or not the browser controls can show or hide to the renderer.
*/
public void updateFullscreenEnabledState() {
if (isFrozen()) return;
updateBrowserControlsState(
getBrowserControlsStateConstraints(), BrowserControlsState.BOTH, true);
if (getContentViewCore() != null && mFullscreenManager != null) {
getContentViewCore().updateMultiTouchZoomSupport(
!mFullscreenManager.getPersistentFullscreenMode());
}
}
/**
* Updates the browser controls state for this tab. As these values are set at the renderer
* level, there is potential for this impacting other tabs that might share the same
* process.
*
* @param constraints The constraints that determine whether the controls can be shown
* or hidden at all.
* @param current The desired current state for the controls. Pass
* {@link BrowserControlsState#BOTH} to preserve the current position.
* @param animate Whether the controls should animate to the specified ending condition or
* should jump immediately.
*/
protected void updateBrowserControlsState(
@BrowserControlsStateEnum int constraints,
@BrowserControlsStateEnum int current, boolean animate) {
if (mNativeTabAndroid == 0) return;
nativeUpdateBrowserControlsState(mNativeTabAndroid, constraints, current, animate);
}
/**
* Updates the browser controls state for this tab. As these values are set at the renderer
* level, there is potential for this impacting other tabs that might share the same
* process.
*
* @param current The desired current state for the controls. Pass
* {@link BrowserControlsState#BOTH} to preserve the current position.
* @param animate Whether the controls should animate to the specified ending condition or
* should jump immediately.
*/
public void updateBrowserControlsState(int current, boolean animate) {
int constraints = getBrowserControlsStateConstraints();
// Do nothing if current and constraints conflict to avoid error in
// renderer.
if ((constraints == BrowserControlsState.HIDDEN && current == BrowserControlsState.SHOWN)
|| (constraints == BrowserControlsState.SHOWN
&& current == BrowserControlsState.HIDDEN)) {
return;
}
updateBrowserControlsState(getBrowserControlsStateConstraints(), current, animate);
}
/**
* @return Whether hiding browser controls is enabled or not.
*/
private boolean isHidingBrowserControlsEnabled() {
return mBrowserControlsVisibilityDelegate.isHidingBrowserControlsEnabled();
}
/**
* Performs any subclass-specific tasks when the Tab crashes.
*/
void handleTabCrash() {
mIsLoading = false;
mIsBeingRestored = false;
if (mTabUma != null) mTabUma.onRendererCrashed();
}
/**
* @return Whether showing browser controls is enabled or not.
*/
public boolean isShowingBrowserControlsEnabled() {
return mBrowserControlsVisibilityDelegate.isShowingBrowserControlsEnabled();
}
/**
* @return The current visibility constraints for the display of browser controls.
* {@link BrowserControlsState} defines the valid return options.
*/
@BrowserControlsStateEnum
public int getBrowserControlsStateConstraints() {
int constraints = BrowserControlsState.BOTH;
if (!isShowingBrowserControlsEnabled()) {
constraints = BrowserControlsState.HIDDEN;
} else if (!isHidingBrowserControlsEnabled()) {
constraints = BrowserControlsState.SHOWN;
}
return constraints;
}
/**
* @param manager The fullscreen manager that should be notified of changes to this tab (if
* set to null, no more updates will come from this tab).
*/
public void setFullscreenManager(FullscreenManager manager) {
mFullscreenManager = manager;
if (mFullscreenManager != null) {
boolean topOffsetsInitialized = !Float.isNaN(mPreviousTopControlsOffsetY)
&& !Float.isNaN(mPreviousContentOffsetY);
boolean bottomOffsetsInitialized =
!Float.isNaN(mPreviousBottomControlsOffsetY);
boolean isChromeHomeEnabled = FeatureUtilities.isChromeHomeEnabled();
// Make sure the dominant control offsets have been set.
if ((!topOffsetsInitialized && !isChromeHomeEnabled)
|| (!bottomOffsetsInitialized && isChromeHomeEnabled)) {
mFullscreenManager.setPositionsForTabToNonFullscreen();
} else {
mFullscreenManager.setPositionsForTab(mPreviousTopControlsOffsetY,
mPreviousBottomControlsOffsetY,
mPreviousContentOffsetY);
}
updateFullscreenEnabledState();
}
// For blimp mode, offset the blimp view by the height of browser controls. This will ensure
// that the view doesn't get clipped at the bottom of the page and also the touch offsets
// would work correctly.
if (getBlimpContents() != null && mFullscreenManager != null) {
ViewGroup blimpView = getBlimpContents().getView();
FrameLayout.LayoutParams lp = (FrameLayout.LayoutParams) blimpView.getLayoutParams();
if (lp == null) {
lp = new FrameLayout.LayoutParams(
LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT);
}
lp.topMargin = mFullscreenManager.getTopControlsHeight();
blimpView.setLayoutParams(lp);
}
}
/**
* Add a new navigation entry for the current URL and page title.
*/
void pushNativePageStateToNavigationEntry() {
assert mNativeTabAndroid != 0 && getNativePage() != null;
nativeSetActiveNavigationEntryTitleForUrl(mNativeTabAndroid, getNativePage().getUrl(),
getNativePage().getTitle());
}
@Override
public void onChildViewRemoved(View parent, View child) {
FullscreenManager fullscreenManager = getFullscreenManager();
if (fullscreenManager != null) {
fullscreenManager.updateContentViewChildrenState();
}
}
@Override
public void onChildViewAdded(View parent, View child) {
FullscreenManager fullscreenManager = getFullscreenManager();
if (fullscreenManager != null) {
fullscreenManager.updateContentViewChildrenState();
}
}
@Override
public void onSystemUiVisibilityChange(int visibility) {
FullscreenManager fullscreenManager = getFullscreenManager();
if (fullscreenManager != null) {
fullscreenManager.onContentViewSystemUiVisibilityChange(visibility);
}
}
/**
* @return The ID of the bookmark associated with the current URL, or
* {@link #INVALID_BOOKMARK_ID} if no such bookmark exists.
*/
public long getBookmarkId() {
return isFrozen() ? INVALID_BOOKMARK_ID : nativeGetBookmarkId(mNativeTabAndroid, false);
}
/**
* Same as getBookmarkId() but never returns ids for managed bookmarks, or any other bookmarks
* that can't be edited by the user.
*/
public long getUserBookmarkId() {
return isFrozen() ? INVALID_BOOKMARK_ID : nativeGetBookmarkId(mNativeTabAndroid, true);
}
/**
* @return True if the offline page is opened.
*/
public boolean isOfflinePage() {
return isFrozen() ? false : nativeIsOfflinePage(mNativeTabAndroid);
}
/**
* @return The offline page if tab currently displays it, null otherwise.
*/
public OfflinePageItem getOfflinePage() {
return isFrozen() ? null : nativeGetOfflinePage(mNativeTabAndroid);
}
/**
* Shows the list of offline pages. This should only be hit when offline pages feature is
* enabled.
*/
@CalledByNative
public void showOfflinePages() {
// TODO(jianli): This is not currently used. Figure out what to do here.
// http://crbug.com/636574
}
/**
* @return Original url of the tab, which is the original url from DOMDistiller.
*/
public String getOriginalUrl() {
return DomDistillerUrlUtils.getOriginalUrlFromDistillerUrl(getUrl());
}
/**
* Request that this tab receive focus. Currently, this function requests focus for the main
* View (usually a ContentView).
*/
public void requestFocus() {
View view = getView();
if (view != null) view.requestFocus();
}
@CalledByNative
protected void openNewTab(String url, String extraHeaders, ResourceRequestBody postData,
int disposition, boolean hasParent, boolean isRendererInitiated) {
if (isClosing()) return;
boolean incognito = isIncognito();
TabLaunchType tabLaunchType = TabLaunchType.FROM_LONGPRESS_FOREGROUND;
Tab parentTab = hasParent ? this : null;
switch (disposition) {
case WindowOpenDisposition.NEW_WINDOW: // fall through
case WindowOpenDisposition.NEW_FOREGROUND_TAB:
break;
case WindowOpenDisposition.NEW_POPUP: // fall through
case WindowOpenDisposition.NEW_BACKGROUND_TAB:
tabLaunchType = TabLaunchType.FROM_LONGPRESS_BACKGROUND;
break;
case WindowOpenDisposition.OFF_THE_RECORD:
assert incognito;
incognito = true;
break;
default:
assert false;
}
// If shouldIgnoreNewTab returns true, the intent is handled by another
// activity. As a result, don't launch a new tab to open the URL. If TabModelSelector
// is not accessible, then we can't open a new tab.
if (shouldIgnoreNewTab(url, incognito) || getTabModelSelector() == null) return;
LoadUrlParams loadUrlParams = new LoadUrlParams(url);
loadUrlParams.setVerbatimHeaders(extraHeaders);
loadUrlParams.setPostData(postData);
loadUrlParams.setIsRendererInitiated(isRendererInitiated);
getTabModelSelector().openNewTab(
loadUrlParams, tabLaunchType, parentTab, incognito);
}
/**
* @return True if the Tab should block the creation of new tabs via {@link #openNewTab}.
*/
private boolean shouldIgnoreNewTab(String url, boolean incognito) {
InterceptNavigationDelegateImpl delegate = getInterceptNavigationDelegate();
return delegate != null && delegate.shouldIgnoreNewTab(url, incognito);
}
/**
* See {@link #mInterceptNavigationDelegate}.
*/
public InterceptNavigationDelegateImpl getInterceptNavigationDelegate() {
return mInterceptNavigationDelegate;
}
@VisibleForTesting
public AuthenticatorNavigationInterceptor getAuthenticatorHelper() {
return getInterceptNavigationDelegate().getAuthenticatorNavigationInterceptor();
}
/**
* See {@link #mInterceptNavigationDelegate}.
*/
@VisibleForTesting
protected void setInterceptNavigationDelegate(InterceptNavigationDelegateImpl delegate) {
mInterceptNavigationDelegate = delegate;
nativeSetInterceptNavigationDelegate(mNativeTabAndroid, delegate);
}
/**
* @return the TabRedirectHandler for the tab.
*/
public TabRedirectHandler getTabRedirectHandler() {
return mTabRedirectHandler;
}
/**
* @return the AppBannerManager.
*/
public AppBannerManager getAppBannerManager() {
return AppBannerManager.getAppBannerManagerForWebContents(getWebContents());
}
@VisibleForTesting
public boolean hasPrerenderedUrl(String url) {
return nativeHasPrerenderedUrl(mNativeTabAndroid, url);
}
/**
* @return the UMA object for the tab. Note that this may be null in some
* cases.
*/
public TabUma getTabUma() {
return mTabUma;
}
/**
* @return The most recently used rank for this tab in the given TabModel.
*/
private static int computeMRURank(Tab tab, TabModel model) {
final long tabLastShow = tab.getTabUma().getLastShownTimestamp();
int mruRank = 0;
for (int i = 0; i < model.getCount(); i++) {
Tab otherTab = model.getTabAt(i);
if (otherTab != tab && otherTab.getTabUma() != null
&& otherTab.getTabUma().getLastShownTimestamp() > tabLastShow) {
mruRank++;
}
}
return mruRank;
}
/**
* Sets the Intent that can be fired to restart the Activity of this Tab's parent.
* Should only be called if the Tab was launched via a different Activity.
*/
public void setParentIntent(Intent parentIntent) {
mParentIntent = parentIntent;
}
/**
* @return Intent that can be fired to restart the parent Activity.
*/
protected Intent getParentIntent() {
return mParentIntent;
}
/**
* Creates a new, "frozen" tab from a saved state. This can be used for background tabs restored
* on cold start that should be loaded when switched to. initialize() needs to be called
* afterwards to complete the second level initialization.
*/
public static Tab createFrozenTabFromState(
int id, ChromeActivity activity, boolean incognito,
WindowAndroid nativeWindow, int parentId, TabState state) {
assert state != null;
return new Tab(id, parentId, incognito, activity, nativeWindow,
TabLaunchType.FROM_RESTORE, TabCreationState.FROZEN_ON_RESTORE, state);
}
/**
* Update whether or not the current native tab and/or web contents are
* currently visible (from an accessibility perspective), or whether
* they're obscured by another view.
*/
public void updateAccessibilityVisibility() {
View view = getView();
if (view != null) {
int importantForAccessibility = isObscuredByAnotherViewForAccessibility()
? View.IMPORTANT_FOR_ACCESSIBILITY_NO_HIDE_DESCENDANTS
: View.IMPORTANT_FOR_ACCESSIBILITY_YES;
if (view.getImportantForAccessibility() != importantForAccessibility) {
view.setImportantForAccessibility(importantForAccessibility);
view.sendAccessibilityEvent(
AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED);
}
}
ContentViewCore cvc = getContentViewCore();
if (cvc != null) {
boolean isWebContentObscured = isObscuredByAnotherViewForAccessibility()
|| isShowingSadTab();
cvc.setObscuredByAnotherView(isWebContentObscured);
}
}
private boolean isObscuredByAnotherViewForAccessibility() {
ChromeActivity activity = getActivity();
return activity != null && activity.isViewObscuringAllTabs();
}
/**
* Creates a new tab to be loaded lazily. This can be used for tabs opened in the background
* that should be loaded when switched to. initialize() needs to be called afterwards to
* complete the second level initialization.
*/
public static Tab createTabForLazyLoad(ChromeActivity activity, boolean incognito,
WindowAndroid nativeWindow, TabLaunchType type, int parentId,
LoadUrlParams loadUrlParams) {
Tab tab = new Tab(
INVALID_TAB_ID, parentId, incognito, activity, nativeWindow, type,
TabCreationState.FROZEN_FOR_LAZY_LOAD, null);
tab.setPendingLoadParams(loadUrlParams);
return tab;
}
/**
* Creates a fresh tab. initialize() needs to be called afterwards to complete the second level
* initialization.
* @param initiallyHidden true iff the tab being created is initially in background
*/
public static Tab createLiveTab(int id, ChromeActivity activity, boolean incognito,
WindowAndroid nativeWindow, TabLaunchType type, int parentId, boolean initiallyHidden) {
return new Tab(id, parentId, incognito, activity, nativeWindow, type, initiallyHidden
? TabCreationState.LIVE_IN_BACKGROUND
: TabCreationState.LIVE_IN_FOREGROUND, null);
}
/**
* @return Whether the theme color for this tab is the default color.
*/
public boolean isDefaultThemeColor() {
return isNativePage() || mDefaultThemeColor == getThemeColor();
}
/**
* @return The default theme color for this tab.
*/
@VisibleForTesting
public int getDefaultThemeColor() {
return mDefaultThemeColor;
}
/**
* @return Intent that tells Chrome to bring an Activity for a particular Tab back to the
* foreground, or null if this isn't possible.
*/
@Nullable
public static Intent createBringTabToFrontIntent(int tabId) {
// Iterate through all {@link CustomTab}s and check whether the given tabId belongs to a
// {@link CustomTab}. If so, return null as the client app's task cannot be foregrounded.
List<WeakReference<Activity>> list = ApplicationStatus.getRunningActivities();
for (WeakReference<Activity> ref : list) {
Activity activity = ref.get();
if (activity instanceof CustomTabActivity
&& ((CustomTabActivity) activity).getActivityTab() != null
&& tabId == ((CustomTabActivity) activity).getActivityTab().getId()) {
return null;
}
}
String packageName = ContextUtils.getApplicationContext().getPackageName();
Intent intent = new Intent(Intent.ACTION_MAIN);
intent.putExtra(Browser.EXTRA_APPLICATION_ID, packageName);
intent.putExtra(TabOpenType.BRING_TAB_TO_FRONT.name(), tabId);
intent.setPackage(packageName);
return intent;
}
/**
* Check whether the context menu download should be intercepted.
*
* @param url URL to be downloaded.
* @return whether the download should be intercepted.
*/
protected boolean shouldInterceptContextMenuDownload(String url) {
return mDownloadDelegate.shouldInterceptContextMenuDownload(url);
}
void handleRendererUnresponsive() {
mIsRendererUnresponsive = true;
if (mFullscreenManager == null) return;
mFullscreenManager.setPositionsForTabToNonFullscreen();
updateBrowserControlsState(BrowserControlsState.SHOWN, false);
}
void handleRendererResponsive() {
mIsRendererUnresponsive = false;
if (mFullscreenManager == null) return;
updateFullscreenEnabledState();
}
/**
* @return Whether the renderer is currently unresponsive.
*/
protected boolean isRendererUnresponsive() {
return mIsRendererUnresponsive;
}
/**
* Reset swipe-to-refresh handler.
*/
void resetSwipeRefreshHandler() {
// When the dialog is visible, keeping the refresh animation active
// in the background is distracting and unnecessary (and likely to
// jank when the dialog is shown).
if (mSwipeRefreshHandler != null) {
mSwipeRefreshHandler.reset();
}
}
/**
* Stop swipe-to-refresh animation.
*/
void stopSwipeRefreshHandler() {
if (mSwipeRefreshHandler != null) {
mSwipeRefreshHandler.didStopRefreshing();
}
}
/**
* Set whether closing this Tab should return the user to the app that spawned Chrome.
*/
public void setIsAllowedToReturnToExternalApp(boolean state) {
mIsAllowedToReturnToExternalApp = state;
}
/**
* @return Whether closing this Tab should return the user to the app that spawned Chrome.
*/
public boolean isAllowedToReturnToExternalApp() {
return mIsAllowedToReturnToExternalApp;
}
/**
* @return Whether or not the tab was opened by an app other than Chrome.
*/
public boolean isCreatedForExternalApp() {
String packageName = ContextUtils.getApplicationContext().getPackageName();
return getLaunchType() == TabLaunchType.FROM_EXTERNAL_APP
&& !TextUtils.equals(getAppAssociatedWith(), packageName);
}
private native void nativeInit();
private native void nativeDestroy(long nativeTabAndroid);
private native void nativeInitWebContents(long nativeTabAndroid, boolean incognito,
WebContents webContents, TabWebContentsDelegateAndroid delegate,
ContextMenuPopulator contextMenuPopulator);
private native BlimpContents nativeInitBlimpContents(
long nativeTabAndroid, Profile profile, long windowAndroidPtr);
private native void nativeUpdateDelegates(long nativeTabAndroid,
TabWebContentsDelegateAndroid delegate, ContextMenuPopulator contextMenuPopulator);
private native void nativeDestroyWebContents(long nativeTabAndroid, boolean deleteNative);
private native Profile nativeGetProfileAndroid(long nativeTabAndroid);
private native int nativeLoadUrl(long nativeTabAndroid, String url, String extraHeaders,
ResourceRequestBody postData, int transition, String referrerUrl, int referrerPolicy,
boolean isRendererInitiated, boolean shoulReplaceCurrentEntry,
long intentReceivedTimestamp, boolean hasUserGesture);
private native void nativeSetActiveNavigationEntryTitleForUrl(long nativeTabAndroid, String url,
String title);
private native boolean nativePrint(long nativeTabAndroid);
private native Bitmap nativeGetFavicon(long nativeTabAndroid);
private native void nativeCreateHistoricalTab(long nativeTabAndroid);
private native void nativeUpdateBrowserControlsState(
long nativeTabAndroid, int constraints, int current, boolean animate);
private native void nativeLoadOriginalImage(long nativeTabAndroid);
private native long nativeGetBookmarkId(long nativeTabAndroid, boolean onlyEditable);
private native boolean nativeIsOfflinePage(long nativeTabAndroid);
private native OfflinePageItem nativeGetOfflinePage(long nativeTabAndroid);
private native void nativeSetInterceptNavigationDelegate(long nativeTabAndroid,
InterceptNavigationDelegate delegate);
private native void nativeAttachToTabContentManager(long nativeTabAndroid,
TabContentManager tabContentManager);
private native boolean nativeHasPrerenderedUrl(long nativeTabAndroid, String url);
}
