chrome/android/features/start_surface/java/src/org/chromium/chrome/features/tasks/TasksView.java - chromium/src - Git at Google

 // Copyright 2019 The Chromium Authors
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.

 package org.chromium.chrome.features.tasks;

 import android.app.Activity;
 import android.content.Context;
 import android.content.res.Configuration;
 import android.graphics.PorterDuff;
 import android.graphics.drawable.Drawable;
 import android.graphics.drawable.LayerDrawable;
 import android.os.Build;
 import android.util.AttributeSet;
 import android.view.View;
 import android.view.ViewGroup;
 import android.view.ViewStub;
 import android.widget.CompoundButton.OnCheckedChangeListener;
 import android.widget.FrameLayout;

 import androidx.annotation.ColorInt;
 import androidx.appcompat.content.res.AppCompatResources;
 import androidx.coordinatorlayout.widget.CoordinatorLayout;

 import com.google.android.material.appbar.AppBarLayout;

 import org.chromium.chrome.R;
 import org.chromium.chrome.browser.feed.FeedStreamViewResizer;
 import org.chromium.chrome.browser.feed.FeedSurfaceCoordinator;
 import org.chromium.chrome.browser.flags.ChromeFeatureList;
 import org.chromium.chrome.browser.lifecycle.ActivityLifecycleDispatcher;
 import org.chromium.chrome.browser.ntp.IncognitoDescriptionView;
 import org.chromium.chrome.browser.ntp.search.SearchBoxCoordinator;
 import org.chromium.chrome.browser.preferences.Pref;
 import org.chromium.chrome.browser.profiles.Profile;
 import org.chromium.chrome.features.start_surface.StartSurfaceConfiguration;
 import org.chromium.components.browser_ui.styles.ChromeColors;
 import org.chromium.components.browser_ui.widget.CoordinatorLayoutForPointer;
 import org.chromium.components.browser_ui.widget.displaystyle.UiConfig;
 import org.chromium.components.content_settings.CookieControlsEnforcement;
 import org.chromium.components.user_prefs.UserPrefs;
 import org.chromium.ui.base.WindowAndroid;

 /** The view of the tasks surface. Set public for testing. */
 public class TasksView extends CoordinatorLayoutForPointer {

     private final Context mContext;
     private FrameLayout mCardTabSwitcherContainer;
     private AppBarLayout mHeaderView;
     private ViewGroup mMvTilesContainerLayout;
     private SearchBoxCoordinator mSearchBoxCoordinator;
     private IncognitoDescriptionView mIncognitoDescriptionView;
     private View.OnClickListener mIncognitoDescriptionLearnMoreListener;
     private boolean mIncognitoCookieControlsToggleIsChecked;
     private OnCheckedChangeListener mIncognitoCookieControlsToggleCheckedListener;
     private @CookieControlsEnforcement int mIncognitoCookieControlsToggleEnforcement =
             CookieControlsEnforcement.NO_ENFORCEMENT;
     private View.OnClickListener mIncognitoCookieControlsIconClickListener;
     private UiConfig mUiConfig;
     private final boolean mIsSurfacePolishEnabled;
     private final boolean mIsSurfacePolishOmniboxColorEnabled;

     /** Default constructor needed to inflate via XML. */
     public TasksView(Context context, AttributeSet attrs) {
         super(context, attrs);
         mContext = context;

         mIsSurfacePolishEnabled = ChromeFeatureList.sSurfacePolish.isEnabled();
         mIsSurfacePolishOmniboxColorEnabled =
                 mIsSurfacePolishEnabled
                         && StartSurfaceConfiguration.SURFACE_POLISH_OMNIBOX_COLOR.getValue();
     }

     public void initialize(
             ActivityLifecycleDispatcher activityLifecycleDispatcher,
             boolean isIncognito,
             WindowAndroid windowAndroid) {
         assert mSearchBoxCoordinator != null
                 : "#onFinishInflate should be completed before the call to initialize.";

         mSearchBoxCoordinator.initialize(activityLifecycleDispatcher, isIncognito, windowAndroid);
     }

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

         mCardTabSwitcherContainer = (FrameLayout) findViewById(R.id.tab_switcher_module_container);
         mMvTilesContainerLayout = findViewById(R.id.mv_tiles_container);
         mSearchBoxCoordinator = new SearchBoxCoordinator(getContext(), this);

         mHeaderView = (AppBarLayout) findViewById(R.id.task_surface_header);

         forceHeaderScrollable();

         mUiConfig = new UiConfig(this);
         setHeaderPadding();
     }

     @Override
     public void onConfigurationChanged(Configuration newConfig) {
         super.onConfigurationChanged(newConfig);
         mUiConfig.updateDisplayStyle();
     }

     public ViewGroup getCardTabSwitcherContainer() {
         return mCardTabSwitcherContainer;
     }

     public ViewGroup getBodyViewContainer() {
         return findViewById(R.id.tasks_surface_body);
     }

     /**
      * Set the visibility of the tasks surface body.
      * @param isVisible Whether it's visible.
      */
     void setSurfaceBodyVisibility(boolean isVisible) {
         getBodyViewContainer().setVisibility(isVisible ? View.VISIBLE : View.GONE);
     }

     /**
      * Set the visibility of the tab carousel.
      *
      * @param isVisible Whether it's visible.
      */
     void setTabCardVisibility(boolean isVisible) {
         mCardTabSwitcherContainer.setVisibility(isVisible ? View.VISIBLE : View.GONE);
     }

     /**
      * @return The {@link SearchBoxCoordinator} representing the fake search box.
      */
     SearchBoxCoordinator getSearchBoxCoordinator() {
         return mSearchBoxCoordinator;
     }

     /** Set the visibility of the Most Visited Tiles. */
     void setMostVisitedVisibility(int visibility) {
         mMvTilesContainerLayout.setVisibility(visibility);
     }

     /** Set the visibility of the Most Visited Tiles. */
     void setQueryTilesVisibility(int visibility) {
         findViewById(R.id.query_tiles_container).setVisibility(visibility);
     }

     /**
      * Set the incognito state.
      * @param isIncognito Whether it's in incognito mode.
      */
     void setIncognitoMode(boolean isIncognito) {
         mSearchBoxCoordinator.setIncognitoMode(isIncognito);
         Drawable searchBackground;
         if (isIncognito) {
             searchBackground =
                     AppCompatResources.getDrawable(
                             mContext, R.drawable.fake_search_box_bg_incognito);
         } else if (mIsSurfacePolishOmniboxColorEnabled) {
             searchBackground =
                     AppCompatResources.getDrawable(
                             mContext, R.drawable.home_surface_search_box_background_colorful);
         } else if (mIsSurfacePolishEnabled) {
             searchBackground =
                     AppCompatResources.getDrawable(
                             mContext, R.drawable.home_surface_search_box_background_neutral);
         } else {
             searchBackground = AppCompatResources.getDrawable(mContext, R.drawable.ntp_search_box);
         }
         if (searchBackground instanceof LayerDrawable) {
             Drawable shapeDrawable =
                     ((LayerDrawable) searchBackground)
                             .findDrawableByLayerId(R.id.fake_search_box_bg_shape);
             if (shapeDrawable != null) {
                 @ColorInt
                 int searchBackgroundColor =
                         isIncognito
                                 ? getResources()
                                         .getColor(R.color.toolbar_text_box_background_incognito)
                                 : ChromeColors.getSurfaceColor(
                                         mContext, R.dimen.toolbar_text_box_elevation);
                 shapeDrawable.mutate();
                 // TODO(https://crbug.com/1239289): Change back to #setTint once our min API level
                 // is 23.
                 shapeDrawable.setColorFilter(searchBackgroundColor, PorterDuff.Mode.SRC_IN);
             }
         }
         mSearchBoxCoordinator.setBackground(searchBackground);

         if (!mIsSurfacePolishEnabled) {
             int hintTextColor =
                     mContext.getColor(
                             isIncognito
                                     ? R.color.locationbar_light_hint_text
                                     : R.color.locationbar_dark_hint_text);
             mSearchBoxCoordinator.setSearchBoxHintColor(hintTextColor);
         }
     }

     /**
      * Initialize incognito description view.
      * Note that this interface is supposed to be called only once.
      */
     void initializeIncognitoDescriptionView() {
         assert mIncognitoDescriptionView == null;
         ViewStub containerStub =
                 (ViewStub) findViewById(R.id.incognito_description_container_layout_stub);
         View containerView = containerStub.inflate();
         if (Build.VERSION.SDK_INT < Build.VERSION_CODES.P) {
             containerView.setFocusable(true);
             containerView.setFocusableInTouchMode(true);
         }

         ViewStub incognitoDescriptionViewStub =
                 (ViewStub) findViewById(R.id.task_view_incognito_layout_stub);
         boolean isIncognitoNtpRevampEnabled = ChromeFeatureList.sIncognitoNtpRevamp.isEnabled();
         if (isIncognitoNtpRevampEnabled) {
             incognitoDescriptionViewStub.setLayoutResource(
                     R.layout.revamped_incognito_description_layout);
         } else {
             incognitoDescriptionViewStub.setLayoutResource(R.layout.incognito_description_layout);
         }

         mIncognitoDescriptionView =
                 (IncognitoDescriptionView) incognitoDescriptionViewStub.inflate();

         // Inflate the correct cookie/tracking protection card.
         ViewStub cardStub = findViewById(R.id.cookie_card_stub);
         if (cardStub == null) return;
         if (shouldShowTrackingProtectionNtp()) {
             cardStub.setLayoutResource(
                     isIncognitoNtpRevampEnabled
                             ? R.layout.revamped_incognito_tracking_protection_card
                             : R.layout.incognito_tracking_protection_card);
         } else {
             cardStub.setLayoutResource(
                     isIncognitoNtpRevampEnabled
                             ? R.layout.revamped_incognito_cookie_controls_card
                             : R.layout.incognito_cookie_controls_card);
         }
         cardStub.inflate();
         mIncognitoDescriptionView.formatTrackingProtectionText(getContext(), this);

         if (mIncognitoDescriptionLearnMoreListener != null) {
             setIncognitoDescriptionLearnMoreClickListener(mIncognitoDescriptionLearnMoreListener);
         }
         setIncognitoCookieControlsToggleChecked(mIncognitoCookieControlsToggleIsChecked);
         if (mIncognitoCookieControlsToggleCheckedListener != null) {
             setIncognitoCookieControlsToggleCheckedListener(
                     mIncognitoCookieControlsToggleCheckedListener);
         }
         setIncognitoCookieControlsToggleEnforcement(mIncognitoCookieControlsToggleEnforcement);
         if (mIncognitoCookieControlsIconClickListener != null) {
             setIncognitoCookieControlsIconClickListener(mIncognitoCookieControlsIconClickListener);
         }
     }

     /**
      * Set the visibility of the incognito description.
      * @param isVisible Whether it's visible or not.
      */
     void setIncognitoDescriptionVisibility(boolean isVisible) {
         ((View) mIncognitoDescriptionView).setVisibility(isVisible ? View.VISIBLE : View.GONE);
     }

     /**
      * Set the incognito description learn more click listener.
      * @param listener The given click listener.
      */
     void setIncognitoDescriptionLearnMoreClickListener(View.OnClickListener listener) {
         mIncognitoDescriptionLearnMoreListener = listener;
         if (mIncognitoDescriptionView != null) {
             mIncognitoDescriptionView.setLearnMoreOnclickListener(listener);
             mIncognitoDescriptionLearnMoreListener = null;
         }
     }

     /**
      * Set the toggle on the cookie controls card.
      * @param isChecked Whether it's checked or not.
      */
     void setIncognitoCookieControlsToggleChecked(boolean isChecked) {
         mIncognitoCookieControlsToggleIsChecked = isChecked;
         if (mIncognitoDescriptionView != null) {
             mIncognitoDescriptionView.setCookieControlsToggle(isChecked);
         }
     }

     /**
      * Set the incognito cookie controls toggle checked change listener.
      * @param listener The given checked change listener.
      */
     void setIncognitoCookieControlsToggleCheckedListener(OnCheckedChangeListener listener) {
         mIncognitoCookieControlsToggleCheckedListener = listener;
         if (mIncognitoDescriptionView != null) {
             mIncognitoDescriptionView.setCookieControlsToggleOnCheckedChangeListener(listener);
             mIncognitoCookieControlsToggleCheckedListener = null;
         }
     }

     /**
      * Set the enforcement rule for the incognito cookie controls toggle.
      * @param enforcement The enforcement enum to set.
      */
     void setIncognitoCookieControlsToggleEnforcement(@CookieControlsEnforcement int enforcement) {
         mIncognitoCookieControlsToggleEnforcement = enforcement;
         if (mIncognitoDescriptionView != null) {
             mIncognitoDescriptionView.setCookieControlsEnforcement(enforcement);
         }
     }

     /**
      * Set the incognito cookie controls icon click listener.
      * @param listener The given onclick listener.
      */
     void setIncognitoCookieControlsIconClickListener(OnClickListener listener) {
         mIncognitoCookieControlsIconClickListener = listener;
         if (mIncognitoDescriptionView != null) {
             mIncognitoDescriptionView.setCookieControlsIconOnclickListener(listener);
             mIncognitoCookieControlsIconClickListener = null;
         }
     }

     /**
      * Set the top margin for the tasks surface body.
      * @param topMargin The top margin to set.
      */
     void setTasksSurfaceBodyTopMargin(int topMargin) {
         MarginLayoutParams params = (MarginLayoutParams) getBodyViewContainer().getLayoutParams();
         params.topMargin = topMargin;
     }

     /**
      * Set the top margin for the mv tiles container.
      * @param topMargin The top margin to set.
      */
     void setMVTilesContainerTopMargin(int topMargin) {
         MarginLayoutParams params = (MarginLayoutParams) mMvTilesContainerLayout.getLayoutParams();
         params.topMargin = topMargin;
     }

     /**
      * Set the left and right margin for the mv tiles container.
      * @param margin The left and right margin to set.
      */
     void setMVTilesContainerLeftAndRightMargin(int margin) {
         MarginLayoutParams params = (MarginLayoutParams) mMvTilesContainerLayout.getLayoutParams();
         params.leftMargin = margin;
         params.rightMargin = margin;
     }

     /**
      * Set the top margin for the single tab card.
      * @param topMargin The top margin to set.
      */
     void setSingleTabTopMargin(int topMargin) {
         MarginLayoutParams params =
                 (MarginLayoutParams)
                         mHeaderView.findViewById(R.id.single_tab_view).getLayoutParams();
         params.topMargin = topMargin;
     }

     /** Set the height of the top toolbar placeholder layout. */
     void setTopToolbarPlaceholderHeight(int height) {
         View topToolbarPlaceholder = findViewById(R.id.top_toolbar_placeholder);
         ViewGroup.LayoutParams lp = topToolbarPlaceholder.getLayoutParams();
         lp.height = height;
         topToolbarPlaceholder.setLayoutParams(lp);
     }

     /** Reset the scrolling position by expanding the {@link #mHeaderView}. */
     void resetScrollPosition() {
         if (mHeaderView != null && mHeaderView.getHeight() != mHeaderView.getBottom()) {
             mHeaderView.setExpanded(true, /* animate= */ false);
         }
     }

     /**
      * Add a header offset change listener.
      * @param onOffsetChangedListener The given header offset change listener.
      */
     public void addHeaderOffsetChangeListener(
             AppBarLayout.OnOffsetChangedListener onOffsetChangedListener) {
         if (mHeaderView != null) {
             mHeaderView.addOnOffsetChangedListener(onOffsetChangedListener);
         }
     }

     /**
      * Remove the given header offset change listener.
      * @param onOffsetChangedListener The header offset change listener which should be removed.
      */
     public void removeHeaderOffsetChangeListener(
             AppBarLayout.OnOffsetChangedListener onOffsetChangedListener) {
         if (mHeaderView != null) {
             mHeaderView.removeOnOffsetChangedListener(onOffsetChangedListener);
         }
     }

     /**
      * Update the fake search box layout.
      * @param height Current height of the fake search box layout.
      * @param topMargin Current top margin of the fake search box layout.
      * @param endPadding Current end padding of the fake search box layout.
      * @param translationX Current translationX of text view in fake search box layout.
      * @param buttonSize Current height and width of the buttons in fake search box layout.
      * @param lensButtonLeftMargin Current left margin of the lens button in fake search box layout.
      * @param searchTextSize Current size for the search text in the fake search box.
      */
     public void updateFakeSearchBox(
             int height,
             int topMargin,
             int endPadding,
             float translationX,
             int buttonSize,
             int lensButtonLeftMargin,
             float searchTextSize) {
         if (mSearchBoxCoordinator.getView().getVisibility() != View.VISIBLE) return;
         mSearchBoxCoordinator.setHeight(height);
         mSearchBoxCoordinator.setTopMargin(topMargin);
         mSearchBoxCoordinator.setEndPadding(endPadding);
         mSearchBoxCoordinator.setTextViewTranslationX(translationX);
         mSearchBoxCoordinator.setButtonsHeight(buttonSize);
         mSearchBoxCoordinator.setButtonsWidth(buttonSize);
         mSearchBoxCoordinator.setLensButtonLeftMargin(lensButtonLeftMargin);
         mSearchBoxCoordinator.setSearchTextSize(searchTextSize);
     }

     /**
      * Update both the fake search box height.
      * @param height Current height of the fake search box.
      */
     public void updateFakeSearchBoxHeight(int height) {
         mSearchBoxCoordinator.setHeight(height);
     }

     /**
      * Update the fake search box container.
      * @param height Current height of the fake search box container.
      */
     public void updateFakeSearchBoxContainer(int height) {
         View fakeSearchBoxContainer = findViewById(R.id.fake_search_box);
         ViewGroup.LayoutParams lpForContainer = fakeSearchBoxContainer.getLayoutParams();

         if (lpForContainer.height == height) {
             return;
         }

         lpForContainer.height = height;
     }

     private void forceHeaderScrollable() {
         // TODO(https://crbug.com/1251632): Find out why scrolling was broken after
         // crrev.com/c/3025127. Force the header view to be draggable as a workaround.
         CoordinatorLayout.LayoutParams params =
                 (CoordinatorLayout.LayoutParams) mHeaderView.getLayoutParams();
         AppBarLayout.Behavior behavior = new AppBarLayout.Behavior();
         behavior.setDragCallback(
                 new AppBarLayout.Behavior.DragCallback() {
                     @Override
                     public boolean canDrag(AppBarLayout appBarLayout) {
                         return true;
                     }
                 });
         params.setBehavior(behavior);
     }

     /**
      * Make the padding of header consistent with that of Feed recyclerview which is sized by {@link
      * FeedStreamViewResizer} in {@link FeedSurfaceCoordinator}
      */
     private void setHeaderPadding() {
         FeedStreamViewResizer.createAndAttach((Activity) mContext, mHeaderView, mUiConfig);
     }

     /**
      * Set the background color for Start Surface.
      * @param backgroundColor The drawable which contains the background color to set for the Start
      *         Surface.
      */
     void setStartSurfaceBackgroundColor(int backgroundColor) {
         setBackgroundColor(backgroundColor);
         mHeaderView.setBackgroundColor(backgroundColor);
     }

     boolean shouldShowTrackingProtectionNtp() {
         Profile profile =
                 Profile.getLastUsedRegularProfile()
                         .getPrimaryOTRProfile(/* createIfNeeded= */ true);
         return (UserPrefs.get(profile).getBoolean(Pref.TRACKING_PROTECTION3PCD_ENABLED)
                 || ChromeFeatureList.isEnabled(ChromeFeatureList.TRACKING_PROTECTION_3PCD));
     }
 }
	// Copyright 2019 The Chromium Authors
	// Use of this source code is governed by a BSD-style license that can be
	// found in the LICENSE file.

	package org.chromium.chrome.features.tasks;

	import android.app.Activity;
	import android.content.Context;
	import android.content.res.Configuration;
	import android.graphics.PorterDuff;
	import android.graphics.drawable.Drawable;
	import android.graphics.drawable.LayerDrawable;
	import android.os.Build;
	import android.util.AttributeSet;
	import android.view.View;
	import android.view.ViewGroup;
	import android.view.ViewStub;
	import android.widget.CompoundButton.OnCheckedChangeListener;
	import android.widget.FrameLayout;

	import androidx.annotation.ColorInt;
	import androidx.appcompat.content.res.AppCompatResources;
	import androidx.coordinatorlayout.widget.CoordinatorLayout;

	import com.google.android.material.appbar.AppBarLayout;

	import org.chromium.chrome.R;
	import org.chromium.chrome.browser.feed.FeedStreamViewResizer;
	import org.chromium.chrome.browser.feed.FeedSurfaceCoordinator;
	import org.chromium.chrome.browser.flags.ChromeFeatureList;
	import org.chromium.chrome.browser.lifecycle.ActivityLifecycleDispatcher;
	import org.chromium.chrome.browser.ntp.IncognitoDescriptionView;
	import org.chromium.chrome.browser.ntp.search.SearchBoxCoordinator;
	import org.chromium.chrome.browser.preferences.Pref;
	import org.chromium.chrome.browser.profiles.Profile;
	import org.chromium.chrome.features.start_surface.StartSurfaceConfiguration;
	import org.chromium.components.browser_ui.styles.ChromeColors;
	import org.chromium.components.browser_ui.widget.CoordinatorLayoutForPointer;
	import org.chromium.components.browser_ui.widget.displaystyle.UiConfig;
	import org.chromium.components.content_settings.CookieControlsEnforcement;
	import org.chromium.components.user_prefs.UserPrefs;
	import org.chromium.ui.base.WindowAndroid;

	/** The view of the tasks surface. Set public for testing. */
	public class TasksView extends CoordinatorLayoutForPointer {

	private final Context mContext;
	private FrameLayout mCardTabSwitcherContainer;
	private AppBarLayout mHeaderView;
	private ViewGroup mMvTilesContainerLayout;
	private SearchBoxCoordinator mSearchBoxCoordinator;
	private IncognitoDescriptionView mIncognitoDescriptionView;
	private View.OnClickListener mIncognitoDescriptionLearnMoreListener;
	private boolean mIncognitoCookieControlsToggleIsChecked;
	private OnCheckedChangeListener mIncognitoCookieControlsToggleCheckedListener;
	private @CookieControlsEnforcement int mIncognitoCookieControlsToggleEnforcement =
	CookieControlsEnforcement.NO_ENFORCEMENT;
	private View.OnClickListener mIncognitoCookieControlsIconClickListener;
	private UiConfig mUiConfig;
	private final boolean mIsSurfacePolishEnabled;
	private final boolean mIsSurfacePolishOmniboxColorEnabled;

	/** Default constructor needed to inflate via XML. */
	public TasksView(Context context, AttributeSet attrs) {
	super(context, attrs);
	mContext = context;

	mIsSurfacePolishEnabled = ChromeFeatureList.sSurfacePolish.isEnabled();
	mIsSurfacePolishOmniboxColorEnabled =
	mIsSurfacePolishEnabled
	&& StartSurfaceConfiguration.SURFACE_POLISH_OMNIBOX_COLOR.getValue();
	}

	public void initialize(
	ActivityLifecycleDispatcher activityLifecycleDispatcher,
	boolean isIncognito,
	WindowAndroid windowAndroid) {
	assert mSearchBoxCoordinator != null
	: "#onFinishInflate should be completed before the call to initialize.";

	mSearchBoxCoordinator.initialize(activityLifecycleDispatcher, isIncognito, windowAndroid);
	}

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

	mCardTabSwitcherContainer = (FrameLayout) findViewById(R.id.tab_switcher_module_container);
	mMvTilesContainerLayout = findViewById(R.id.mv_tiles_container);
	mSearchBoxCoordinator = new SearchBoxCoordinator(getContext(), this);

	mHeaderView = (AppBarLayout) findViewById(R.id.task_surface_header);

	forceHeaderScrollable();

	mUiConfig = new UiConfig(this);
	setHeaderPadding();
	}

	@Override
	public void onConfigurationChanged(Configuration newConfig) {
	super.onConfigurationChanged(newConfig);
	mUiConfig.updateDisplayStyle();
	}

	public ViewGroup getCardTabSwitcherContainer() {
	return mCardTabSwitcherContainer;
	}

	public ViewGroup getBodyViewContainer() {
	return findViewById(R.id.tasks_surface_body);
	}

	/**
	* Set the visibility of the tasks surface body.
	* @param isVisible Whether it's visible.
	*/
	void setSurfaceBodyVisibility(boolean isVisible) {
	getBodyViewContainer().setVisibility(isVisible ? View.VISIBLE : View.GONE);
	}

	/**
	* Set the visibility of the tab carousel.
	*
	* @param isVisible Whether it's visible.
	*/
	void setTabCardVisibility(boolean isVisible) {
	mCardTabSwitcherContainer.setVisibility(isVisible ? View.VISIBLE : View.GONE);
	}

	/**
	* @return The {@link SearchBoxCoordinator} representing the fake search box.
	*/
	SearchBoxCoordinator getSearchBoxCoordinator() {
	return mSearchBoxCoordinator;
	}

	/** Set the visibility of the Most Visited Tiles. */
	void setMostVisitedVisibility(int visibility) {
	mMvTilesContainerLayout.setVisibility(visibility);
	}

	/** Set the visibility of the Most Visited Tiles. */
	void setQueryTilesVisibility(int visibility) {
	findViewById(R.id.query_tiles_container).setVisibility(visibility);
	}

	/**
	* Set the incognito state.
	* @param isIncognito Whether it's in incognito mode.
	*/
	void setIncognitoMode(boolean isIncognito) {
	mSearchBoxCoordinator.setIncognitoMode(isIncognito);
	Drawable searchBackground;
	if (isIncognito) {
	searchBackground =
	AppCompatResources.getDrawable(
	mContext, R.drawable.fake_search_box_bg_incognito);
	} else if (mIsSurfacePolishOmniboxColorEnabled) {
	searchBackground =
	AppCompatResources.getDrawable(
	mContext, R.drawable.home_surface_search_box_background_colorful);
	} else if (mIsSurfacePolishEnabled) {
	searchBackground =
	AppCompatResources.getDrawable(
	mContext, R.drawable.home_surface_search_box_background_neutral);
	} else {
	searchBackground = AppCompatResources.getDrawable(mContext, R.drawable.ntp_search_box);
	}
	if (searchBackground instanceof LayerDrawable) {
	Drawable shapeDrawable =
	((LayerDrawable) searchBackground)
	.findDrawableByLayerId(R.id.fake_search_box_bg_shape);
	if (shapeDrawable != null) {
	@ColorInt
	int searchBackgroundColor =
	isIncognito
	? getResources()
	.getColor(R.color.toolbar_text_box_background_incognito)
	: ChromeColors.getSurfaceColor(
	mContext, R.dimen.toolbar_text_box_elevation);
	shapeDrawable.mutate();
	// TODO(https://crbug.com/1239289): Change back to #setTint once our min API level
	// is 23.
	shapeDrawable.setColorFilter(searchBackgroundColor, PorterDuff.Mode.SRC_IN);
	}
	}
	mSearchBoxCoordinator.setBackground(searchBackground);

	if (!mIsSurfacePolishEnabled) {
	int hintTextColor =
	mContext.getColor(
	isIncognito
	? R.color.locationbar_light_hint_text
	: R.color.locationbar_dark_hint_text);
	mSearchBoxCoordinator.setSearchBoxHintColor(hintTextColor);
	}
	}

	/**
	* Initialize incognito description view.
	* Note that this interface is supposed to be called only once.
	*/
	void initializeIncognitoDescriptionView() {
	assert mIncognitoDescriptionView == null;
	ViewStub containerStub =
	(ViewStub) findViewById(R.id.incognito_description_container_layout_stub);
	View containerView = containerStub.inflate();
	if (Build.VERSION.SDK_INT < Build.VERSION_CODES.P) {
	containerView.setFocusable(true);
	containerView.setFocusableInTouchMode(true);
	}

	ViewStub incognitoDescriptionViewStub =
	(ViewStub) findViewById(R.id.task_view_incognito_layout_stub);
	boolean isIncognitoNtpRevampEnabled = ChromeFeatureList.sIncognitoNtpRevamp.isEnabled();
	if (isIncognitoNtpRevampEnabled) {
	incognitoDescriptionViewStub.setLayoutResource(
	R.layout.revamped_incognito_description_layout);
	} else {
	incognitoDescriptionViewStub.setLayoutResource(R.layout.incognito_description_layout);
	}

	mIncognitoDescriptionView =
	(IncognitoDescriptionView) incognitoDescriptionViewStub.inflate();

	// Inflate the correct cookie/tracking protection card.
	ViewStub cardStub = findViewById(R.id.cookie_card_stub);
	if (cardStub == null) return;
	if (shouldShowTrackingProtectionNtp()) {
	cardStub.setLayoutResource(
	isIncognitoNtpRevampEnabled
	? R.layout.revamped_incognito_tracking_protection_card
	: R.layout.incognito_tracking_protection_card);
	} else {
	cardStub.setLayoutResource(
	isIncognitoNtpRevampEnabled
	? R.layout.revamped_incognito_cookie_controls_card
	: R.layout.incognito_cookie_controls_card);
	}
	cardStub.inflate();
	mIncognitoDescriptionView.formatTrackingProtectionText(getContext(), this);

	if (mIncognitoDescriptionLearnMoreListener != null) {
	setIncognitoDescriptionLearnMoreClickListener(mIncognitoDescriptionLearnMoreListener);
	}
	setIncognitoCookieControlsToggleChecked(mIncognitoCookieControlsToggleIsChecked);
	if (mIncognitoCookieControlsToggleCheckedListener != null) {
	setIncognitoCookieControlsToggleCheckedListener(
	mIncognitoCookieControlsToggleCheckedListener);
	}
	setIncognitoCookieControlsToggleEnforcement(mIncognitoCookieControlsToggleEnforcement);
	if (mIncognitoCookieControlsIconClickListener != null) {
	setIncognitoCookieControlsIconClickListener(mIncognitoCookieControlsIconClickListener);
	}
	}

	/**
	* Set the visibility of the incognito description.
	* @param isVisible Whether it's visible or not.
	*/
	void setIncognitoDescriptionVisibility(boolean isVisible) {
	((View) mIncognitoDescriptionView).setVisibility(isVisible ? View.VISIBLE : View.GONE);
	}

	/**
	* Set the incognito description learn more click listener.
	* @param listener The given click listener.
	*/
	void setIncognitoDescriptionLearnMoreClickListener(View.OnClickListener listener) {
	mIncognitoDescriptionLearnMoreListener = listener;
	if (mIncognitoDescriptionView != null) {
	mIncognitoDescriptionView.setLearnMoreOnclickListener(listener);
	mIncognitoDescriptionLearnMoreListener = null;
	}
	}

	/**
	* Set the toggle on the cookie controls card.
	* @param isChecked Whether it's checked or not.
	*/
	void setIncognitoCookieControlsToggleChecked(boolean isChecked) {
	mIncognitoCookieControlsToggleIsChecked = isChecked;
	if (mIncognitoDescriptionView != null) {
	mIncognitoDescriptionView.setCookieControlsToggle(isChecked);
	}
	}

	/**
	* Set the incognito cookie controls toggle checked change listener.
	* @param listener The given checked change listener.
	*/
	void setIncognitoCookieControlsToggleCheckedListener(OnCheckedChangeListener listener) {
	mIncognitoCookieControlsToggleCheckedListener = listener;
	if (mIncognitoDescriptionView != null) {
	mIncognitoDescriptionView.setCookieControlsToggleOnCheckedChangeListener(listener);
	mIncognitoCookieControlsToggleCheckedListener = null;
	}
	}

	/**
	* Set the enforcement rule for the incognito cookie controls toggle.
	* @param enforcement The enforcement enum to set.
	*/
	void setIncognitoCookieControlsToggleEnforcement(@CookieControlsEnforcement int enforcement) {
	mIncognitoCookieControlsToggleEnforcement = enforcement;
	if (mIncognitoDescriptionView != null) {
	mIncognitoDescriptionView.setCookieControlsEnforcement(enforcement);
	}
	}

	/**
	* Set the incognito cookie controls icon click listener.
	* @param listener The given onclick listener.
	*/
	void setIncognitoCookieControlsIconClickListener(OnClickListener listener) {
	mIncognitoCookieControlsIconClickListener = listener;
	if (mIncognitoDescriptionView != null) {
	mIncognitoDescriptionView.setCookieControlsIconOnclickListener(listener);
	mIncognitoCookieControlsIconClickListener = null;
	}
	}

	/**
	* Set the top margin for the tasks surface body.
	* @param topMargin The top margin to set.
	*/
	void setTasksSurfaceBodyTopMargin(int topMargin) {
	MarginLayoutParams params = (MarginLayoutParams) getBodyViewContainer().getLayoutParams();
	params.topMargin = topMargin;
	}

	/**
	* Set the top margin for the mv tiles container.
	* @param topMargin The top margin to set.
	*/
	void setMVTilesContainerTopMargin(int topMargin) {
	MarginLayoutParams params = (MarginLayoutParams) mMvTilesContainerLayout.getLayoutParams();
	params.topMargin = topMargin;
	}

	/**
	* Set the left and right margin for the mv tiles container.
	* @param margin The left and right margin to set.
	*/
	void setMVTilesContainerLeftAndRightMargin(int margin) {
	MarginLayoutParams params = (MarginLayoutParams) mMvTilesContainerLayout.getLayoutParams();
	params.leftMargin = margin;
	params.rightMargin = margin;
	}

	/**
	* Set the top margin for the single tab card.
	* @param topMargin The top margin to set.
	*/
	void setSingleTabTopMargin(int topMargin) {
	MarginLayoutParams params =
	(MarginLayoutParams)
	mHeaderView.findViewById(R.id.single_tab_view).getLayoutParams();
	params.topMargin = topMargin;
	}

	/** Set the height of the top toolbar placeholder layout. */
	void setTopToolbarPlaceholderHeight(int height) {
	View topToolbarPlaceholder = findViewById(R.id.top_toolbar_placeholder);
	ViewGroup.LayoutParams lp = topToolbarPlaceholder.getLayoutParams();
	lp.height = height;
	topToolbarPlaceholder.setLayoutParams(lp);
	}

	/** Reset the scrolling position by expanding the {@link #mHeaderView}. */
	void resetScrollPosition() {
	if (mHeaderView != null && mHeaderView.getHeight() != mHeaderView.getBottom()) {
	mHeaderView.setExpanded(true, /* animate= */ false);
	}
	}

	/**
	* Add a header offset change listener.
	* @param onOffsetChangedListener The given header offset change listener.
	*/
	public void addHeaderOffsetChangeListener(
	AppBarLayout.OnOffsetChangedListener onOffsetChangedListener) {
	if (mHeaderView != null) {
	mHeaderView.addOnOffsetChangedListener(onOffsetChangedListener);
	}
	}

	/**
	* Remove the given header offset change listener.
	* @param onOffsetChangedListener The header offset change listener which should be removed.
	*/
	public void removeHeaderOffsetChangeListener(
	AppBarLayout.OnOffsetChangedListener onOffsetChangedListener) {
	if (mHeaderView != null) {
	mHeaderView.removeOnOffsetChangedListener(onOffsetChangedListener);
	}
	}

	/**
	* Update the fake search box layout.
	* @param height Current height of the fake search box layout.
	* @param topMargin Current top margin of the fake search box layout.
	* @param endPadding Current end padding of the fake search box layout.
	* @param translationX Current translationX of text view in fake search box layout.
	* @param buttonSize Current height and width of the buttons in fake search box layout.
	* @param lensButtonLeftMargin Current left margin of the lens button in fake search box layout.
	* @param searchTextSize Current size for the search text in the fake search box.
	*/
	public void updateFakeSearchBox(
	int height,
	int topMargin,
	int endPadding,
	float translationX,
	int buttonSize,
	int lensButtonLeftMargin,
	float searchTextSize) {
	if (mSearchBoxCoordinator.getView().getVisibility() != View.VISIBLE) return;
	mSearchBoxCoordinator.setHeight(height);
	mSearchBoxCoordinator.setTopMargin(topMargin);
	mSearchBoxCoordinator.setEndPadding(endPadding);
	mSearchBoxCoordinator.setTextViewTranslationX(translationX);
	mSearchBoxCoordinator.setButtonsHeight(buttonSize);
	mSearchBoxCoordinator.setButtonsWidth(buttonSize);
	mSearchBoxCoordinator.setLensButtonLeftMargin(lensButtonLeftMargin);
	mSearchBoxCoordinator.setSearchTextSize(searchTextSize);
	}

	/**
	* Update both the fake search box height.
	* @param height Current height of the fake search box.
	*/
	public void updateFakeSearchBoxHeight(int height) {
	mSearchBoxCoordinator.setHeight(height);
	}

	/**
	* Update the fake search box container.
	* @param height Current height of the fake search box container.
	*/
	public void updateFakeSearchBoxContainer(int height) {
	View fakeSearchBoxContainer = findViewById(R.id.fake_search_box);
	ViewGroup.LayoutParams lpForContainer = fakeSearchBoxContainer.getLayoutParams();

	if (lpForContainer.height == height) {
	return;
	}

	lpForContainer.height = height;
	}

	private void forceHeaderScrollable() {
	// TODO(https://crbug.com/1251632): Find out why scrolling was broken after
	// crrev.com/c/3025127. Force the header view to be draggable as a workaround.
	CoordinatorLayout.LayoutParams params =
	(CoordinatorLayout.LayoutParams) mHeaderView.getLayoutParams();
	AppBarLayout.Behavior behavior = new AppBarLayout.Behavior();
	behavior.setDragCallback(
	new AppBarLayout.Behavior.DragCallback() {
	@Override
	public boolean canDrag(AppBarLayout appBarLayout) {
	return true;
	}
	});
	params.setBehavior(behavior);
	}

	/**
	* Make the padding of header consistent with that of Feed recyclerview which is sized by {@link
	* FeedStreamViewResizer} in {@link FeedSurfaceCoordinator}
	*/
	private void setHeaderPadding() {
	FeedStreamViewResizer.createAndAttach((Activity) mContext, mHeaderView, mUiConfig);
	}

	/**
	* Set the background color for Start Surface.
	* @param backgroundColor The drawable which contains the background color to set for the Start
	* Surface.
	*/
	void setStartSurfaceBackgroundColor(int backgroundColor) {
	setBackgroundColor(backgroundColor);
	mHeaderView.setBackgroundColor(backgroundColor);
	}

	boolean shouldShowTrackingProtectionNtp() {
	Profile profile =
	Profile.getLastUsedRegularProfile()
	.getPrimaryOTRProfile(/* createIfNeeded= */ true);
	return (UserPrefs.get(profile).getBoolean(Pref.TRACKING_PROTECTION3PCD_ENABLED)
	\|\| ChromeFeatureList.isEnabled(ChromeFeatureList.TRACKING_PROTECTION_3PCD));
	}
	}