chrome/browser/ui/ui_features.cc

// 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.

#include "chrome/browser/ui/ui_features.h"

#include "base/feature_list.h"
#include "build/build_config.h"
#include "build/chromeos_buildflags.h"
#include "ui_features.h"

namespace features {

// Enables the tab dragging fallback when full window dragging is not supported
// by the platform (e.g. Wayland). See https://crbug.com/896640
BASE_FEATURE(kAllowWindowDragUsingSystemDragDrop,
             "AllowWindowDragUsingSystemDragDrop",
             base::FEATURE_DISABLED_BY_DEFAULT);

#if !BUILDFLAG(IS_CHROMEOS) && !BUILDFLAG(IS_ANDROID)
BASE_FEATURE(kDesktopPWAsAppHomePage,
             "DesktopPWAsAppHomePage",
             base::FEATURE_DISABLED_BY_DEFAULT);
#endif  // !BUILDFLAG(IS_CHROMEOS) && !BUILDFLAG(IS_ANDROID)

// Enables Chrome Labs menu in the toolbar. See https://crbug.com/1145666
BASE_FEATURE(kChromeLabs, "ChromeLabs", base::FEATURE_DISABLED_BY_DEFAULT);

#if BUILDFLAG(GOOGLE_CHROME_BRANDING)
// Enables "Tips for Chrome" in Main Chrome Menu | Help.
BASE_FEATURE(kChromeTipsInMainMenu,
             "ChromeTipsInMainMenu",
             base::FEATURE_DISABLED_BY_DEFAULT);

// Enables "Tips for Chrome" in Main Chrome Menu | Help.
BASE_FEATURE(kChromeTipsInMainMenuNewBadge,
             "ChromeTipsInMainMenuNewBadge",
             base::FEATURE_DISABLED_BY_DEFAULT);
#endif

// Enables "Chrome What's New" UI.
BASE_FEATURE(kChromeWhatsNewUI,
             "ChromeWhatsNewUI",
#if BUILDFLAG(GOOGLE_CHROME_BRANDING) && !defined(ANDROID) && \
    !BUILDFLAG(IS_CHROMEOS_LACROS) && !BUILDFLAG(IS_CHROMEOS_ASH)
             base::FEATURE_ENABLED_BY_DEFAULT
#else
             base::FEATURE_DISABLED_BY_DEFAULT
#endif
);

#if BUILDFLAG(GOOGLE_CHROME_BRANDING)
// Enables "new" badge for "Chrome What's New" in Main Chrome Menu | Help.
BASE_FEATURE(kChromeWhatsNewInMainMenuNewBadge,
             "ChromeWhatsNewInMainMenuNewBadge",
             base::FEATURE_DISABLED_BY_DEFAULT);
#endif

#if !defined(ANDROID)
// Enables "Access Code Cast" UI.
BASE_FEATURE(kAccessCodeCastUI,
             "AccessCodeCastUI",
             base::FEATURE_ENABLED_BY_DEFAULT);
#endif

// Enables displaying the submenu to open a link with a different profile
// even if there is no other profile opened in a separate window
BASE_FEATURE(kDisplayOpenLinkAsProfile,
             "DisplayOpenLinkAsProfile",
             base::FEATURE_DISABLED_BY_DEFAULT);

// Enables showing the EV certificate details in the Page Info bubble.
BASE_FEATURE(kEvDetailsInPageInfo,
             "EvDetailsInPageInfo",
             base::FEATURE_ENABLED_BY_DEFAULT);

#if BUILDFLAG(ENABLE_EXTENSIONS)
// Controls whether we use a different UX for simple extensions overriding
// settings.
BASE_FEATURE(kLightweightExtensionOverrideConfirmations,
             "LightweightExtensionOverrideConfirmations",
             base::FEATURE_ENABLED_BY_DEFAULT);
#endif

// Enables Bookmarks++ Side Panel UI.
BASE_FEATURE(kPowerBookmarksSidePanel,
             "PowerBookmarksSidePanel",
             base::FEATURE_DISABLED_BY_DEFAULT);

// Enables a more prominent active tab title in dark mode to aid with
// accessibility.
BASE_FEATURE(kProminentDarkModeActiveTabTitle,
             "ProminentDarkModeActiveTabTitle",
             base::FEATURE_DISABLED_BY_DEFAULT);

// Enables the QuickCommands UI surface. See https://crbug.com/1014639
BASE_FEATURE(kQuickCommands,
             "QuickCommands",
             base::FEATURE_DISABLED_BY_DEFAULT);

// Enables the side search feature for Google Search. Presents recent Google
// search results in a browser side panel.
#if BUILDFLAG(IS_CHROMEOS_ASH)
// Enable by default as the ChromeOS iteration of Side Search has launched (See
// crbug.com/1242730).
BASE_FEATURE(kSideSearch, "SideSearch", base::FEATURE_ENABLED_BY_DEFAULT);
#else
// Disable by default on remaining desktop platforms until desktop UX has
// launched (See crbug.com/1279696).
BASE_FEATURE(kSideSearch, "SideSearch", base::FEATURE_DISABLED_BY_DEFAULT);
#endif  // BUILDFLAG(IS_CHROMEOS_ASH)

BASE_FEATURE(kSideSearchFeedback,
             "SideSearchFeedback",
             base::FEATURE_DISABLED_BY_DEFAULT);

// Controls whether the Side Search feature is configured to support any
// participating Chrome search engine. This should always be enabled with
// kSideSearch on non-ChromeOS platforms.
BASE_FEATURE(kSideSearchDSESupport,
             "SideSearchDSESupport",
             base::FEATURE_DISABLED_BY_DEFAULT);

// Displays right-click search results of a highlighted text in side panel,
// So users are not forced to switch to a new tab to view the search results
BASE_FEATURE(kSearchWebInSidePanel,
             "SearchWebInSidePanel",
             base::FEATURE_DISABLED_BY_DEFAULT);

// Whether to clobber all side search side panels in the current browser window
// or only the side search in the current tab before read later or lens side
// panel is open.
BASE_FEATURE(kClobberAllSideSearchSidePanels,
             "ClobberAllSideSearchSidePanels",
             base::FEATURE_ENABLED_BY_DEFAULT);

// Feature that controls whether or not feature engagement configurations can be
// used to control automatic triggering for side search.
BASE_FEATURE(kSideSearchAutoTriggering,
             "SideSearchAutoTriggering",
             base::FEATURE_ENABLED_BY_DEFAULT);

// Feature param that determines how many times a user has to return to a given
// SRP before we automatically trigger the side search side panel for that SRP
// on a subsequent navigation.
const base::FeatureParam<int> kSideSearchAutoTriggeringReturnCount{
    &kSideSearchAutoTriggering, "SideSearchAutoTriggeringReturnCount", 2};

// Adds improved support for handling multiple contextual and global RHS browser
// side panels. Designed specifically to handle the interim state before the v2
// side panel project launches.
BASE_FEATURE(kSidePanelImprovedClobbering,
             "SidePanelImprovedClobbering",
             base::FEATURE_DISABLED_BY_DEFAULT);

BASE_FEATURE(kSidePanelWebView,
             "SidePanelWebView",
             base::FEATURE_DISABLED_BY_DEFAULT);

BASE_FEATURE(kSidePanelJourneys,
             "SidePanelJourneys",
             base::FEATURE_DISABLED_BY_DEFAULT);
// If enabled, and the main flag is also enabled, the Journeys omnibox
// entrypoints open Journeys in Side Panel rather than the History WebUI.
const base::FeatureParam<bool> kSidePanelJourneysOpensFromOmnibox{
    &kSidePanelJourneys, "SidePanelJourneysOpensFromOmnibox", false};

// Enables tabs to scroll in the tabstrip. https://crbug.com/951078
BASE_FEATURE(kScrollableTabStrip,
             "ScrollableTabStrip",
             base::FEATURE_DISABLED_BY_DEFAULT);
const char kMinimumTabWidthFeatureParameterName[] = "minTabWidth";

// Splits pinned and unpinned tabs into separate TabStrips.
// https://crbug.com/1346019
BASE_FEATURE(kSplitTabStrip,
             "SplitTabStrip",
             base::FEATURE_DISABLED_BY_DEFAULT);

// Directly controls the "new" badge (as opposed to old "master switch"; see
// https://crbug.com/1169907 for master switch deprecation and
// https://crbug.com/968587 for the feature itself)
// https://crbug.com/1173792
BASE_FEATURE(kTabGroupsNewBadgePromo,
             "TabGroupsNewBadgePromo",
             base::FEATURE_DISABLED_BY_DEFAULT);

// Enables users to explicitly save and recall tab groups.
// https://crbug.com/1223929
BASE_FEATURE(kTabGroupsSave,
             "TabGroupsSave",
             base::FEATURE_DISABLED_BY_DEFAULT);

// Enables preview images in tab-hover cards.
// https://crbug.com/928954
BASE_FEATURE(kTabHoverCardImages,
             "TabHoverCardImages",
#if BUILDFLAG(IS_MAC)
             base::FEATURE_DISABLED_BY_DEFAULT
#else
             base::FEATURE_ENABLED_BY_DEFAULT
#endif
);

const char kTabHoverCardImagesNotReadyDelayParameterName[] =
    "page_not_ready_delay";
const char kTabHoverCardImagesLoadingDelayParameterName[] =
    "page_loading_delay";
const char kTabHoverCardImagesLoadedDelayParameterName[] = "page_loaded_delay";
const char kTabHoverCardImagesCrossfadePreviewAtParameterName[] =
    "crossfade_preview_at";
const char kTabHoverCardAdditionalMaxWidthDelay[] =
    "additional_max_width_delay";
const char kTabHoverCardAlternateFormat[] = "alternate_format";

// Enables tab outlines in additional situations for accessibility.
BASE_FEATURE(kTabOutlinesInLowContrastThemes,
             "TabOutlinesInLowContrastThemes",
             base::FEATURE_DISABLED_BY_DEFAULT);

BASE_FEATURE(kTabSearchChevronIcon,
             "TabSearchChevronIcon",
             base::FEATURE_ENABLED_BY_DEFAULT);

// Enables the tab search submit feedback button.
BASE_FEATURE(kTabSearchFeedback,
             "TabSearchFeedback",
             base::FEATURE_DISABLED_BY_DEFAULT);

// Controls whether or not to use fuzzy search for tab search.
BASE_FEATURE(kTabSearchFuzzySearch,
             "TabSearchFuzzySearch",
             base::FEATURE_DISABLED_BY_DEFAULT);

const char kTabSearchSearchThresholdName[] = "TabSearchSearchThreshold";

const base::FeatureParam<bool> kTabSearchSearchIgnoreLocation{
    &kTabSearchFuzzySearch, "TabSearchSearchIgnoreLocation", false};

// If this feature parameter is enabled, show media tabs in both "Audio & Video"
// section and "Open Tabs" section.
const char kTabSearchAlsoShowMediaTabsinOpenTabsSectionParameterName[] =
    "Also show Media Tabs in Open Tabs Section";

const base::FeatureParam<int> kTabSearchSearchDistance{
    &kTabSearchFuzzySearch, "TabSearchSearchDistance", 200};

const base::FeatureParam<double> kTabSearchSearchThreshold{
    &kTabSearchFuzzySearch, kTabSearchSearchThresholdName, 0.6};

const base::FeatureParam<double> kTabSearchTitleWeight{
    &kTabSearchFuzzySearch, "TabSearchTitleWeight", 2.0};

const base::FeatureParam<double> kTabSearchHostnameWeight{
    &kTabSearchFuzzySearch, "TabSearchHostnameWeight", 1.0};

const base::FeatureParam<double> kTabSearchGroupTitleWeight{
    &kTabSearchFuzzySearch, "TabSearchGroupTitleWeight", 1.5};

const base::FeatureParam<bool> kTabSearchMoveActiveTabToBottom{
    &kTabSearchFuzzySearch, "TabSearchMoveActiveTabToBottom", true};

// Controls feature parameters for Tab Search's `Recently Closed` entries.
BASE_FEATURE(kTabSearchRecentlyClosed,
             "TabSearchRecentlyClosed",
             base::FEATURE_ENABLED_BY_DEFAULT);

const base::FeatureParam<int> kTabSearchRecentlyClosedDefaultItemDisplayCount{
    &kTabSearchRecentlyClosed, "TabSearchRecentlyClosedDefaultItemDisplayCount",
    8};

const base::FeatureParam<int> kTabSearchRecentlyClosedTabCountThreshold{
    &kTabSearchRecentlyClosed, "TabSearchRecentlyClosedTabCountThreshold", 100};

BASE_FEATURE(kTabSearchUseMetricsReporter,
             "TabSearchUseMetricsReporter",
             base::FEATURE_DISABLED_BY_DEFAULT);

BASE_FEATURE(kToolbarUseHardwareBitmapDraw,
             "ToolbarUseHardwareBitmapDraw",
             base::FEATURE_DISABLED_BY_DEFAULT);

// Controls whether top chrome pages will use the spare renderer if no top
// chrome renderers are present.
BASE_FEATURE(kTopChromeWebUIUsesSpareRenderer,
             "TopChromeWebUIUsesSpareRenderer",
             base::FEATURE_DISABLED_BY_DEFAULT);

BASE_FEATURE(kUnifiedSidePanel,
             "UnifiedSidePanel",
             base::FEATURE_DISABLED_BY_DEFAULT);

// This enables enables persistence of a WebContents in a 1-to-1 association
// with the current Profile for WebUI bubbles. See https://crbug.com/1177048.
BASE_FEATURE(kWebUIBubblePerProfilePersistence,
             "WebUIBubblePerProfilePersistence",
             base::FEATURE_DISABLED_BY_DEFAULT);

// Enables a web-based tab strip. See https://crbug.com/989131. Note this
// feature only works when the ENABLE_WEBUI_TAB_STRIP buildflag is enabled.
BASE_FEATURE(kWebUITabStrip,
             "WebUITabStrip",
#if BUILDFLAG(IS_CHROMEOS)
             base::FEATURE_ENABLED_BY_DEFAULT
#else
             base::FEATURE_DISABLED_BY_DEFAULT
#endif
);

// The default value of this flag is aligned with platform behavior to handle
// context menu with touch.
// TODO(crbug.com/1257626): Enable this flag for all platforms after launch.
BASE_FEATURE(kWebUITabStripContextMenuAfterTap,
             "WebUITabStripContextMenuAfterTap",
#if BUILDFLAG(IS_CHROMEOS_ASH)
             base::FEATURE_DISABLED_BY_DEFAULT
#else
             base::FEATURE_ENABLED_BY_DEFAULT
#endif
);

#if BUILDFLAG(IS_CHROMEOS)
BASE_FEATURE(kChromeOSTabSearchCaptionButton,
             "ChromeOSTabSearchCaptionButton",
             base::FEATURE_DISABLED_BY_DEFAULT);
#endif

#if BUILDFLAG(IS_MAC)
// Enabled an experiment which increases the prominence to grant MacOS system
// location permission to Chrome when location permissions have already been
// approved. https://crbug.com/1211052
BASE_FEATURE(kLocationPermissionsExperiment,
             "LocationPermissionsExperiment",
             base::FEATURE_DISABLED_BY_DEFAULT);
constexpr base::FeatureParam<int>
    kLocationPermissionsExperimentBubblePromptLimit{
        &kLocationPermissionsExperiment, "bubble_prompt_count", 3};
constexpr base::FeatureParam<int>
    kLocationPermissionsExperimentLabelPromptLimit{
        &kLocationPermissionsExperiment, "label_prompt_count", 5};

BASE_FEATURE(kViewsFirstRunDialog,
             "ViewsFirstRunDialog",
             base::FEATURE_DISABLED_BY_DEFAULT);

BASE_FEATURE(kViewsTaskManager,
             "ViewsTaskManager",
             base::FEATURE_DISABLED_BY_DEFAULT);

BASE_FEATURE(kViewsJSAppModalDialog,
             "ViewsJSAppModalDialog",
             base::FEATURE_DISABLED_BY_DEFAULT);

int GetLocationPermissionsExperimentBubblePromptLimit() {
  return kLocationPermissionsExperimentBubblePromptLimit.Get();
}
int GetLocationPermissionsExperimentLabelPromptLimit() {
  return kLocationPermissionsExperimentLabelPromptLimit.Get();
}
#endif

#if BUILDFLAG(IS_WIN)

// Moves the Tab Search button into the browser frame's caption button area on
// Windows 10 (crbug.com/1223847).
BASE_FEATURE(kWin10TabSearchCaptionButton,
             "Win10TabSearchCaptionButton",
             base::FEATURE_ENABLED_BY_DEFAULT);

#endif

// Reduce resource usage when view is hidden by not rendering loading animation.
BASE_FEATURE(kStopLoadingAnimationForHiddenWindow,
             "StopLoadingAnimationForHiddenWindow",
             base::FEATURE_DISABLED_BY_DEFAULT);

}  // namespace features