@Override
protected void dispatchDraw(Canvas canvas) {
    super.dispatchDraw(canvas);
    setVerticalFadingEdgeEnabled(true);
    float topShadowStrength = getTopFadingEdgeStrength();
    float bottomShadowStrength = getBottomFadingEdgeStrength();
    float shadowHeight = getVerticalFadingEdgeLength();
    setVerticalFadingEdgeEnabled(false);

    if (mDrawTopShadow) {
        mFadingShadow.drawShadow(this, canvas, FadingShadow.POSITION_TOP,
                shadowHeight, topShadowStrength);
    }

    if (mDrawBottomShadow) {
        mFadingShadow.drawShadow(this, canvas, FadingShadow.POSITION_BOTTOM,
                shadowHeight, bottomShadowStrength);
    }
}
 

@Override
protected void onFinishInflate() {
    super.onFinishInflate();
    mItemsContainer = (BookmarkRecyclerView) findViewById(R.id.bookmark_items_container);
    TextView emptyView = (TextView) findViewById(R.id.bookmark_empty_view);
    emptyView.setText(R.string.bookmarks_folder_empty);
    mItemsContainer.setEmptyView(emptyView);
    mActionBar = (BookmarkActionBar) findViewById(R.id.bookmark_action_bar);
    mLoadingView = (LoadingView) findViewById(R.id.bookmark_initial_loading_view);
    FadingShadowView shadow = (FadingShadowView) findViewById(R.id.shadow);
    if (DeviceFormFactor.isLargeTablet(getContext())) {
        shadow.setVisibility(View.GONE);
    } else {
        shadow.init(ApiCompatibilityUtils.getColor(getResources(),
                R.color.toolbar_shadow_color), FadingShadow.POSITION_TOP);
    }
}
 

/**
 * Initializes the UI for the given Activity.
 *
 * @param activity Activity that is showing the UI.
 */
public void initialize(DownloadManagerUiDelegate delegate, Activity activity) {
    mDelegate = delegate;

    mActionBarDrawerToggle = new ActionBarDrawerToggle(activity,
            this, (Toolbar) findViewById(R.id.action_bar),
            R.string.accessibility_bookmark_drawer_toggle_btn_open,
            R.string.accessibility_bookmark_drawer_toggle_btn_close);
    addDrawerListener(mActionBarDrawerToggle);
    mActionBarDrawerToggle.syncState();

    FadingShadowView shadow = (FadingShadowView) findViewById(R.id.shadow);
    if (DeviceFormFactor.isLargeTablet(getContext())) {
        shadow.setVisibility(View.GONE);
    } else {
        shadow.init(ApiCompatibilityUtils.getColor(getResources(),
                R.color.toolbar_shadow_color), FadingShadow.POSITION_TOP);
    }

    mSpaceDisplay.update(0);

    ((Toolbar) findViewById(R.id.action_bar)).setTitle(R.string.menu_downloads);
}
 

@Override
protected void dispatchDraw(Canvas canvas) {
    super.dispatchDraw(canvas);
    setVerticalFadingEdgeEnabled(true);
    float topShadowStrength = getTopFadingEdgeStrength();
    float bottomShadowStrength = getBottomFadingEdgeStrength();
    float shadowHeight = getVerticalFadingEdgeLength();
    setVerticalFadingEdgeEnabled(false);

    if (mDrawTopShadow) {
        mFadingShadow.drawShadow(this, canvas, FadingShadow.POSITION_TOP,
                shadowHeight, topShadowStrength);
    }

    if (mDrawBottomShadow) {
        mFadingShadow.drawShadow(this, canvas, FadingShadow.POSITION_BOTTOM,
                shadowHeight, bottomShadowStrength);
    }
}
 

@Override
protected void onFinishInflate() {
    super.onFinishInflate();
    mItemsContainer = (BookmarkRecyclerView) findViewById(R.id.bookmark_items_container);
    TextView emptyView = (TextView) findViewById(R.id.bookmark_empty_view);
    emptyView.setText(R.string.bookmarks_folder_empty);
    mItemsContainer.setEmptyView(emptyView);
    mActionBar = (BookmarkActionBar) findViewById(R.id.bookmark_action_bar);
    mLoadingView = (LoadingView) findViewById(R.id.bookmark_initial_loading_view);
    FadingShadowView shadow = (FadingShadowView) findViewById(R.id.shadow);
    if (DeviceFormFactor.isLargeTablet(getContext())) {
        shadow.setVisibility(View.GONE);
    } else {
        shadow.init(ApiCompatibilityUtils.getColor(getResources(),
                R.color.toolbar_shadow_color), FadingShadow.POSITION_TOP);
    }
}
 

@Override
protected void onFinishInflate() {
    super.onFinishInflate();

    LayoutInflater.from(getContext()).inflate(R.layout.selectable_list_layout, this);

    mEmptyView = (TextView) findViewById(R.id.empty_view);
    mLoadingView = (LoadingView) findViewById(R.id.loading_view);
    mLoadingView.showLoadingUI();

    mToolbarStub = (ViewStub) findViewById(R.id.action_bar_stub);

    FadingShadowView shadow = (FadingShadowView) findViewById(R.id.shadow);
    if (DeviceFormFactor.isLargeTablet(getContext())) {
        shadow.setVisibility(View.GONE);
    } else {
        shadow.init(ApiCompatibilityUtils.getColor(getResources(),
                R.color.toolbar_shadow_color), FadingShadow.POSITION_TOP);
    }
}
 

/**
 * Initializes the SelectionToolbar.
 *
 * @param toolbarLayoutId The resource id of the toolbar layout. This will be inflated into
 *                        a ViewStub.
 * @param delegate The SelectionDelegate that will inform the toolbar of selection changes.
 * @param titleResId The resource id of the title string. May be 0 if this class shouldn't set
 *                   set a title when the selection is cleared.
 * @param drawerLayout The DrawerLayout whose navigation icon is displayed in this toolbar.
 * @param normalGroupResId The resource id of the menu group to show when a selection isn't
 *                         established.
 * @param selectedGroupResId The resource id of the menu item to show when a selection is
 *                           established.
 * @param normalBackgroundColorResId The resource id of the color to use as the background color
 *                                   when selection is not enabled. If null the default appbar
 *                                   background color will be used.
 * @param listener The OnMenuItemClickListener to set on the toolbar.
 * @return The initialized SelectionToolbar.
 */
public SelectableListToolbar<E> initializeToolbar(int toolbarLayoutId,
        SelectionDelegate<E> delegate, int titleResId, @Nullable DrawerLayout drawerLayout,
        int normalGroupResId, int selectedGroupResId,
        @Nullable Integer normalBackgroundColorResId,
        @Nullable OnMenuItemClickListener listener) {
    mToolbarStub.setLayoutResource(toolbarLayoutId);
    @SuppressWarnings("unchecked")
    SelectableListToolbar<E> toolbar = (SelectableListToolbar<E>) mToolbarStub.inflate();
    mToolbar = toolbar;
    mToolbar.initialize(delegate, titleResId, drawerLayout, normalGroupResId,
            selectedGroupResId, normalBackgroundColorResId);

    if (listener != null) {
        mToolbar.setOnMenuItemClickListener(listener);
    }

    mToolbarShadow = (FadingShadowView) findViewById(R.id.shadow);
    mToolbarShadow.init(
            ApiCompatibilityUtils.getColor(getResources(), R.color.toolbar_shadow_color),
            FadingShadow.POSITION_TOP);
    delegate.addObserver(this);
    setToolbarShadowVisibility();

    return mToolbar;
}
 

/**
 * Prepares the toolbar for use.
 *
 * Many of the things that would ideally be set as attributes don't work and need to be set
 * programmatically.  This is likely due to how we compile the support libraries.
 */
private void prepareToolbar() {
    EditorDialogToolbar toolbar = (EditorDialogToolbar) mLayout.findViewById(R.id.action_bar);
    toolbar.setTitle(mEditorModel.getTitle());
    toolbar.setTitleTextColor(Color.WHITE);
    toolbar.setShowDeleteMenuItem(false);

    // Show the help article when the user asks.
    toolbar.setOnMenuItemClickListener(new OnMenuItemClickListener() {
        @Override
        public boolean onMenuItemClick(MenuItem item) {
            launchAutofillHelpPage(mContext);
            return true;
        }
    });

    // Cancel editing when the user hits the back arrow.
    toolbar.setNavigationContentDescription(R.string.cancel);
    toolbar.setNavigationIcon(R.drawable.ic_arrow_back_white_24dp);
    toolbar.setNavigationOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            cancelEdit();
        }
    });

    // Make it appear that the toolbar is floating by adding a shadow.
    FadingShadowView shadow = (FadingShadowView) mLayout.findViewById(R.id.shadow);
    shadow.init(ApiCompatibilityUtils.getColor(mContext.getResources(),
            R.color.toolbar_shadow_color), FadingShadow.POSITION_TOP);

    // The top shadow is handled by the toolbar, so hide the one used in the field editor.
    // TODO(dfalcantara): Make the toolbar's shadow cover the field editor instead of pushing
    //                    it down.  Maybe use a RelativeLayout with overlapping views?
    FadingEdgeScrollView scrollView =
            (FadingEdgeScrollView) mLayout.findViewById(R.id.scroll_view);
    scrollView.setShadowVisibility(false, true);
}
 

@Override
protected void dispatchDraw(Canvas canvas) {
    super.dispatchDraw(canvas);
    if (mFadingShadow != null) {
        setVerticalFadingEdgeEnabled(true);
        float shadowStrength = getBottomFadingEdgeStrength();
        float shadowHeight = getVerticalFadingEdgeLength();
        setVerticalFadingEdgeEnabled(false);
        mFadingShadow.drawShadow(this, canvas, FadingShadow.POSITION_BOTTOM,
                shadowHeight, shadowStrength);
    }
}
 

/**
 * Prepares the toolbar for use.
 *
 * Many of the things that would ideally be set as attributes don't work and need to be set
 * programmatically.  This is likely due to how we compile the support libraries.
 */
private void prepareToolbar() {
    EditorDialogToolbar toolbar = (EditorDialogToolbar) mLayout.findViewById(R.id.action_bar);
    toolbar.setTitle(mEditorModel.getTitle());
    toolbar.setTitleTextColor(Color.WHITE);
    toolbar.setShowDeleteMenuItem(false);

    // Show the help article when the user asks.
    toolbar.setOnMenuItemClickListener(new OnMenuItemClickListener() {
        @Override
        public boolean onMenuItemClick(MenuItem item) {
            launchAutofillHelpPage(mContext);
            return true;
        }
    });

    // Cancel editing when the user hits the back arrow.
    toolbar.setNavigationContentDescription(R.string.cancel);
    toolbar.setNavigationIcon(R.drawable.ic_arrow_back_white_24dp);
    toolbar.setNavigationOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            cancelEdit();
        }
    });

    // Make it appear that the toolbar is floating by adding a shadow.
    FadingShadowView shadow = (FadingShadowView) mLayout.findViewById(R.id.shadow);
    shadow.init(ApiCompatibilityUtils.getColor(mContext.getResources(),
            R.color.toolbar_shadow_color), FadingShadow.POSITION_TOP);

    // The top shadow is handled by the toolbar, so hide the one used in the field editor.
    FadingEdgeScrollView scrollView =
            (FadingEdgeScrollView) mLayout.findViewById(R.id.scroll_view);
    scrollView.setShadowVisibility(false, true);
}
 

@Override
protected void dispatchDraw(Canvas canvas) {
    super.dispatchDraw(canvas);
    if (mFadingShadow != null) {
        setVerticalFadingEdgeEnabled(true);
        float shadowStrength = getBottomFadingEdgeStrength();
        float shadowHeight = getVerticalFadingEdgeLength();
        setVerticalFadingEdgeEnabled(false);
        mFadingShadow.drawShadow(this, canvas, FadingShadow.POSITION_BOTTOM,
                shadowHeight, shadowStrength);
    }
}
 

/**
 * Prepares the toolbar for use.
 *
 * Many of the things that would ideally be set as attributes don't work and need to be set
 * programmatically.  This is likely due to how we compile the support libraries.
 */
private void prepareToolbar() {
    EditorDialogToolbar toolbar = (EditorDialogToolbar) mLayout.findViewById(R.id.action_bar);
    toolbar.setTitle(mEditorModel.getTitle());
    toolbar.setTitleTextColor(Color.WHITE);
    toolbar.setShowDeleteMenuItem(false);

    // Show the help article when the user asks.
    toolbar.setOnMenuItemClickListener(new OnMenuItemClickListener() {
        @Override
        public boolean onMenuItemClick(MenuItem item) {
            launchAutofillHelpPage(mContext);
            return true;
        }
    });

    // Cancel editing when the user hits the back arrow.
    toolbar.setNavigationContentDescription(R.string.cancel);
    toolbar.setNavigationIcon(R.drawable.ic_arrow_back_white_24dp);
    toolbar.setNavigationOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            dismissDialog();
        }
    });

    // Make it appear that the toolbar is floating by adding a shadow.
    FadingShadowView shadow = (FadingShadowView) mLayout.findViewById(R.id.shadow);
    shadow.init(ApiCompatibilityUtils.getColor(
                        mContext.getResources(), R.color.toolbar_shadow_color),
            FadingShadow.POSITION_TOP);

    // The top shadow is handled by the toolbar, so hide the one used in the field editor.
    FadingEdgeScrollView scrollView =
            (FadingEdgeScrollView) mLayout.findViewById(R.id.scroll_view);
    scrollView.setEdgeVisibility(
            FadingEdgeScrollView.DRAW_NO_EDGE, FadingEdgeScrollView.DRAW_FADING_EDGE);
}
 

@Override
protected void dispatchDraw(Canvas canvas) {
    super.dispatchDraw(canvas);
    if (mFadingShadow != null) {
        setVerticalFadingEdgeEnabled(true);
        float shadowStrength = getBottomFadingEdgeStrength();
        float shadowHeight = getVerticalFadingEdgeLength();
        setVerticalFadingEdgeEnabled(false);
        mFadingShadow.drawShadow(this, canvas, FadingShadow.POSITION_BOTTOM,
                shadowHeight, shadowStrength);
    }
}
 

/**
 * Constructs a new IncognitoBottomSheetContent.
 * @param activity The {@link Activity} displaying this bottom sheet content.
 */
public IncognitoBottomSheetContent(final Activity activity) {
    LayoutInflater inflater = LayoutInflater.from(activity);
    mView = inflater.inflate(R.layout.incognito_bottom_sheet_content, null);

    View learnMore = mView.findViewById(R.id.learn_more);
    learnMore.setOnClickListener(new OnClickListener() {
        @Override
        public void onClick(View v) {
            HelpAndFeedback.getInstance(activity).show(activity,
                    activity.getString(R.string.help_context_incognito_learn_more),
                    Profile.getLastUsedProfile(), null);
        }
    });

    final FadingShadowView shadow = (FadingShadowView) mView.findViewById(R.id.shadow);
    shadow.init(
            ApiCompatibilityUtils.getColor(mView.getResources(), R.color.toolbar_shadow_color),
            FadingShadow.POSITION_TOP);

    mScrollView = (ScrollView) mView.findViewById(R.id.scroll_view);
    mScrollView.getViewTreeObserver().addOnScrollChangedListener(new OnScrollChangedListener() {
        @Override
        public void onScrollChanged() {
            boolean shadowVisible = mScrollView.canScrollVertically(-1);
            shadow.setVisibility(shadowVisible ? View.VISIBLE : View.GONE);
        }
    });
}
 

public FadingEdgeScrollView(Context context, AttributeSet attrs) {
    super(context, attrs);

    mFadingShadow = new FadingShadow(SHADOW_COLOR);
    setFadingEdgeLength(getResources().getDimensionPixelSize(R.dimen.ntp_shadow_height));
}
 

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    mContext = this;
    setContentView(R.layout.physical_web_list_urls_activity);

    initSharedPreferences();

    mAdapter = new NearbyUrlsAdapter(this);

    View emptyView = findViewById(R.id.physical_web_empty);
    mListView = (ListView) findViewById(R.id.physical_web_urls_list);
    mListView.setEmptyView(emptyView);
    mListView.setAdapter(mAdapter);
    mListView.setOnItemClickListener(this);

    mEmptyListText = (TextView) findViewById(R.id.physical_web_empty_list_text);

    mScanningImageView = (ImageView) findViewById(R.id.physical_web_logo);

    mSwipeRefreshWidget =
            (SwipeRefreshWidget) findViewById(R.id.physical_web_swipe_refresh_widget);
    mSwipeRefreshWidget.setOnRefreshListener(this);

    mBottomBar = findViewById(R.id.physical_web_bottom_bar);

    int shadowColor = ApiCompatibilityUtils.getColor(getResources(),
            R.color.bottom_bar_shadow_color);
    FadingShadowView shadow =
            (FadingShadowView) findViewById(R.id.physical_web_bottom_bar_shadow);
    shadow.init(shadowColor, FadingShadow.POSITION_BOTTOM);

    View bottomBarClose = (View) findViewById(R.id.physical_web_bottom_bar_close);
    bottomBarClose.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            hideBottomBar();
        }
    });

    mPwsClient = new PwsClientImpl(this);
    int referer = getIntent().getIntExtra(REFERER_KEY, 0);
    if (savedInstanceState == null) {  // Ensure this is a newly-created activity.
        PhysicalWebUma.onActivityReferral(this, referer);
    }
    mIsInitialDisplayRecorded = false;
    mIsRefreshing = false;
    mIsRefreshUserInitiated = false;
    mPhysicalWebBleClient =
        PhysicalWebBleClient.getInstance((ChromeApplication) getApplicationContext());
}
 

public FadingEdgeScrollView(Context context, AttributeSet attrs) {
    super(context, attrs);

    mFadingShadow = new FadingShadow(SHADOW_COLOR);
    setFadingEdgeLength(getResources().getDimensionPixelSize(R.dimen.ntp_shadow_height));
}
 

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    mContext = this;
    setContentView(R.layout.physical_web_list_urls_activity);

    initSharedPreferences();

    mAdapter = new NearbyUrlsAdapter(this);

    View emptyView = findViewById(R.id.physical_web_empty);
    mListView = (ListView) findViewById(R.id.physical_web_urls_list);
    mListView.setEmptyView(emptyView);
    mListView.setAdapter(mAdapter);
    mListView.setOnItemClickListener(this);

    mEmptyListText = (TextView) findViewById(R.id.physical_web_empty_list_text);

    mScanningImageView = (ImageView) findViewById(R.id.physical_web_logo);

    mSwipeRefreshWidget =
            (SwipeRefreshWidget) findViewById(R.id.physical_web_swipe_refresh_widget);
    mSwipeRefreshWidget.setOnRefreshListener(this);

    mBottomBar = findViewById(R.id.physical_web_bottom_bar);

    int shadowColor = ApiCompatibilityUtils.getColor(getResources(),
            R.color.bottom_bar_shadow_color);
    FadingShadowView shadow =
            (FadingShadowView) findViewById(R.id.physical_web_bottom_bar_shadow);
    shadow.init(shadowColor, FadingShadow.POSITION_BOTTOM);

    View bottomBarClose = (View) findViewById(R.id.physical_web_bottom_bar_close);
    bottomBarClose.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            hideBottomBar();
        }
    });

    mPwsClient = new PwsClientImpl(this);
    int referer = getIntent().getIntExtra(REFERER_KEY, 0);
    if (savedInstanceState == null) {  // Ensure this is a newly-created activity.
        PhysicalWebUma.onActivityReferral(this, referer);
    }
    mIsInitialDisplayRecorded = false;
    mIsRefreshing = false;
    mIsRefreshUserInitiated = false;
    mNearbyForegroundSubscription = new NearbyForegroundSubscription(this);
}
 

public SuggestionsBottomSheetContent(final ChromeActivity activity, final BottomSheet sheet,
        TabModelSelector tabModelSelector, SnackbarManager snackbarManager) {
    Profile profile = Profile.getLastUsedProfile();
    SuggestionsNavigationDelegate navigationDelegate =
            new SuggestionsNavigationDelegateImpl(activity, profile, sheet, tabModelSelector);
    mTileGroupDelegate = new TileGroupDelegateImpl(
            activity, profile, tabModelSelector, navigationDelegate, snackbarManager);
    mSuggestionsUiDelegate = createSuggestionsDelegate(
            profile, navigationDelegate, sheet, activity.getReferencePool());

    mView = LayoutInflater.from(activity).inflate(
            R.layout.suggestions_bottom_sheet_content, null);
    mRecyclerView = (SuggestionsRecyclerView) mView.findViewById(R.id.recycler_view);

    TouchEnabledDelegate touchEnabledDelegate = new TouchEnabledDelegate() {
        @Override
        public void setTouchEnabled(boolean enabled) {
            activity.getBottomSheet().setTouchEnabled(enabled);
        }
    };
    mContextMenuManager =
            new ContextMenuManager(activity, navigationDelegate, touchEnabledDelegate);
    activity.getWindowAndroid().addContextMenuCloseListener(mContextMenuManager);
    mSuggestionsUiDelegate.addDestructionObserver(new DestructionObserver() {
        @Override
        public void onDestroy() {
            activity.getWindowAndroid().removeContextMenuCloseListener(mContextMenuManager);
        }
    });

    UiConfig uiConfig = new UiConfig(mRecyclerView);

    final NewTabPageAdapter adapter = new NewTabPageAdapter(mSuggestionsUiDelegate,
            /* aboveTheFoldView = */ null, uiConfig, OfflinePageBridge.getForProfile(profile),
            mContextMenuManager, mTileGroupDelegate);
    mRecyclerView.init(uiConfig, mContextMenuManager, adapter);

    mBottomSheetObserver = new SuggestionsSheetVisibilityChangeObserver(this, activity) {
        @Override
        public void onSheetOpened() {
            mRecyclerView.scrollToPosition(0);
            adapter.refreshSuggestions();
            mSuggestionsUiDelegate.getEventReporter().onSurfaceOpened();
            mRecyclerView.getScrollEventReporter().reset();

            if (ChromeFeatureList.isEnabled(
                        ChromeFeatureList.CONTEXTUAL_SUGGESTIONS_CAROUSEL)
                    && sheet.getActiveTab() != null) {
                updateContextualSuggestions(sheet.getActiveTab().getUrl());
            }

            super.onSheetOpened();
        }

        @Override
        public void onContentShown() {
            SuggestionsMetrics.recordSurfaceVisible();
        }

        @Override
        public void onContentHidden() {
            SuggestionsMetrics.recordSurfaceHidden();
        }

        @Override
        public void onContentStateChanged(@BottomSheet.SheetState int contentState) {
            if (contentState == BottomSheet.SHEET_STATE_HALF) {
                SuggestionsMetrics.recordSurfaceHalfVisible();
            } else if (contentState == BottomSheet.SHEET_STATE_FULL) {
                SuggestionsMetrics.recordSurfaceFullyVisible();
            }
        }
    };

    mShadowView = (FadingShadowView) mView.findViewById(R.id.shadow);
    mShadowView.init(
            ApiCompatibilityUtils.getColor(mView.getResources(), R.color.toolbar_shadow_color),
            FadingShadow.POSITION_TOP);

    mRecyclerView.addOnScrollListener(new OnScrollListener() {
        @Override
        public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
            boolean shadowVisible = mRecyclerView.canScrollVertically(-1);
            mShadowView.setVisibility(shadowVisible ? View.VISIBLE : View.GONE);
        }
    });

    final LocationBar locationBar = (LocationBar) sheet.findViewById(R.id.location_bar);
    mRecyclerView.setOnTouchListener(new View.OnTouchListener() {
        @Override
        @SuppressLint("ClickableViewAccessibility")
        public boolean onTouch(View view, MotionEvent motionEvent) {
            if (locationBar != null && locationBar.isUrlBarFocused()) {
                locationBar.setUrlBarFocus(false);
            }

            // Never intercept the touch event.
            return false;
        }
    });
}
 

/**
 * Enables drawing a shadow at the bottom of the view when the view's content extends beyond
 * the bottom of the view. This is exactly the same as a fading edge, except that the shadow
 * color can have an alpha component, whereas a fading edge color must be opaque.
 *
 * @param shadowColor The color of the shadow, e.g. 0x11000000.
 */
public void enableBottomShadow(int shadowColor) {
    mFadingShadow = new FadingShadow(shadowColor);
    setFadingEdgeLength(getResources().getDimensionPixelSize(R.dimen.ntp_shadow_height));
}
 

/**
 * Enables drawing a shadow at the bottom of the view when the view's content extends beyond
 * the bottom of the view. This is exactly the same as a fading edge, except that the shadow
 * color can have an alpha component, whereas a fading edge color must be opaque.
 *
 * @param shadowColor The color of the shadow, e.g. 0x11000000.
 */
public void enableBottomShadow(int shadowColor) {
    mFadingShadow = new FadingShadow(shadowColor);
    setFadingEdgeLength(getResources().getDimensionPixelSize(R.dimen.ntp_shadow_height));
}
 

/**
 * Enables drawing a shadow at the bottom of the view when the view's content extends beyond
 * the bottom of the view. This is exactly the same as a fading edge, except that the shadow
 * color can have an alpha component, whereas a fading edge color must be opaque.
 *
 * @param shadowColor The color of the shadow, e.g. 0x11000000.
 */
public void enableBottomShadow(int shadowColor) {
    mFadingShadow = new FadingShadow(shadowColor);
    setFadingEdgeLength(getResources().getDimensionPixelSize(R.dimen.ntp_shadow_height));
}