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// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_UI_WEBUI_TAB_STRIP_TAB_STRIP_PAGE_HANDLER_H_
#define CHROME_BROWSER_UI_WEBUI_TAB_STRIP_TAB_STRIP_PAGE_HANDLER_H_
#include "base/gtest_prod_util.h"
#include "base/memory/raw_ptr.h"
#include "base/scoped_observation.h"
#include "base/timer/timer.h"
#include "chrome/browser/themes/theme_service_observer.h"
#include "chrome/browser/ui/tabs/tab_change_type.h"
#include "chrome/browser/ui/tabs/tab_strip_model_observer.h"
#include "chrome/browser/ui/webui/tab_strip/tab_before_unload_tracker.h"
#include "chrome/browser/ui/webui/tab_strip/tab_strip.mojom.h"
#include "chrome/browser/ui/webui/tab_strip/thumbnail_tracker.h"
#include "components/saved_tab_groups/public/tab_group_sync_service.h"
#include "components/tabs/public/tab_group.h"
#include "content/public/browser/web_contents.h"
#include "content/public/browser/web_contents_delegate.h"
#include "mojo/public/cpp/bindings/receiver.h"
#include "mojo/public/cpp/bindings/remote.h"
#include "ui/native_theme/native_theme.h"
#include "ui/native_theme/native_theme_observer.h"
class Browser;
class TabStripUIEmbedder;
class TabStripPageHandler : public tab_strip::mojom::PageHandler,
public TabStripModelObserver,
public content::WebContentsDelegate,
public ThemeServiceObserver,
public ui::NativeThemeObserver {
public:
TabStripPageHandler(
mojo::PendingReceiver<tab_strip::mojom::PageHandler> receiver,
mojo::PendingRemote<tab_strip::mojom::Page> page,
content::WebUI* web_ui,
Browser* browser,
TabStripUIEmbedder* embedder);
TabStripPageHandler(const TabStripPageHandler&) = delete;
TabStripPageHandler& operator=(const TabStripPageHandler&) = delete;
~TabStripPageHandler() override;
void NotifyLayoutChanged();
void NotifyReceivedKeyboardFocus();
void NotifyContextMenuClosed();
// TabStripModelObserver:
void OnTabGroupChanged(const TabGroupChange& change) override;
void TabGroupedStateChanged(TabStripModel* tab_strip_model,
std::optional<tab_groups::TabGroupId> old_group,
std::optional<tab_groups::TabGroupId> new_group,
tabs::TabInterface* tab,
int index) override;
void OnTabStripModelChanged(
TabStripModel* tab_strip_model,
const TabStripModelChange& change,
const TabStripSelectionChange& selection) override;
void TabChangedAt(content::WebContents* contents,
int index,
TabChangeType change_type) override;
void TabPinnedStateChanged(TabStripModel* tab_strip_model,
content::WebContents* contents,
int index) override;
void TabBlockedStateChanged(content::WebContents* contents,
int index) override;
// content::WebContentsDelegate:
bool PreHandleGestureEvent(content::WebContents* source,
const blink::WebGestureEvent& event) override;
bool CanDragEnter(content::WebContents* source,
const content::DropData& data,
blink::DragOperationsMask operations_allowed) override;
bool IsPrivileged() override;
private:
FRIEND_TEST_ALL_PREFIXES(TabStripPageHandlerTest, CloseTab);
FRIEND_TEST_ALL_PREFIXES(TabStripPageHandlerTest, GetGroupVisualData);
FRIEND_TEST_ALL_PREFIXES(TabStripPageHandlerTest, GroupTab);
FRIEND_TEST_ALL_PREFIXES(TabStripPageHandlerTest, MoveGroup);
FRIEND_TEST_ALL_PREFIXES(TabStripPageHandlerTest, MoveGroupAcrossProfiles);
FRIEND_TEST_ALL_PREFIXES(TabStripPageHandlerTest, MoveGroupAcrossWindows);
FRIEND_TEST_ALL_PREFIXES(TabStripPageHandlerTest, MoveGroupMultipleTabs);
FRIEND_TEST_ALL_PREFIXES(TabStripPageHandlerTest, MoveTab);
FRIEND_TEST_ALL_PREFIXES(TabStripPageHandlerTest, MoveTabAcrossProfiles);
FRIEND_TEST_ALL_PREFIXES(TabStripPageHandlerTest, MoveTabAcrossWindows);
FRIEND_TEST_ALL_PREFIXES(TabStripPageHandlerTest,
RemoveTabIfInvalidContextMenu);
FRIEND_TEST_ALL_PREFIXES(TabStripPageHandlerTest, SwitchTab);
FRIEND_TEST_ALL_PREFIXES(TabStripPageHandlerTest, UngroupTab);
FRIEND_TEST_ALL_PREFIXES(TabStripPageHandlerTest,
NoopMoveGroupAcrossWindowsBreaksContiguity);
FRIEND_TEST_ALL_PREFIXES(TabStripPageHandlerTest,
MoveTabAcrossWindowsInBetweenGroup);
void OnLongPressTimer();
tab_strip::mojom::TabPtr GetTabData(content::WebContents* contents,
int index);
tab_strip::mojom::TabGroupVisualDataPtr GetTabGroupData(TabGroup* group);
void HandleThumbnailUpdate(content::WebContents* tab,
ThumbnailTracker::CompressedThumbnailData image);
void OnTabCloseCancelled(content::WebContents* tab);
void ReportTabDurationHistogram(const char* histogram_fragment,
int tab_count,
base::TimeDelta duration);
gfx::ImageSkia ThemeFavicon(const gfx::ImageSkia& source,
bool active_tab_icon);
// ThemeServiceObserver implementation.
void OnThemeChanged() override;
// ui::NativeThemeObserver:
void OnNativeThemeUpdated(ui::NativeTheme* observed_theme) override;
// tab_strip::mojom::PageHandler:
void GetTabs(GetTabsCallback callback) override;
void GetGroupVisualData(GetGroupVisualDataCallback callback) override;
void CloseContainer() override;
void CloseTab(int32_t tab_id, bool tab_was_swiped) override;
void ShowEditDialogForGroup(const std::string& group_id,
int32_t location_x,
int32_t location_y,
int32_t width,
int32_t height) override;
void ShowBackgroundContextMenu(int32_t location_x,
int32_t location_y) override;
void ShowTabContextMenu(int32_t tab_id,
int32_t location_x,
int32_t location_y) override;
void GetLayout(GetLayoutCallback callback) override;
void GroupTab(int32_t tab_id, const std::string& group_id) override;
void UngroupTab(int32_t tab_id) override;
void MoveGroup(const std::string& group_id, int32_t to_index) override;
void MoveTab(int32_t tab_id, int32_t to_index) override;
void SetThumbnailTracked(int32_t tab_id, bool thumbnail_tracked) override;
void ReportTabActivationDuration(uint32_t duration_ms) override;
void ReportTabDataReceivedDuration(uint32_t tab_count,
uint32_t duration_ms) override;
void ReportTabCreationDuration(uint32_t tab_count,
uint32_t duration_ms) override;
void ActivateTab(int32_t tab_id) override;
mojo::Receiver<tab_strip::mojom::PageHandler> receiver_;
mojo::Remote<tab_strip::mojom::Page> page_;
const raw_ptr<content::WebUI> web_ui_;
const raw_ptr<Browser> browser_;
const raw_ptr<TabStripUIEmbedder> embedder_;
ThumbnailTracker thumbnail_tracker_;
tab_strip_ui::TabBeforeUnloadTracker tab_before_unload_tracker_;
// Tracks whether we are currently handling a gesture scroll event sequence.
bool handling_gesture_scroll_ = false;
// A flag that tracks whether or not a scroll begin gesture event should
// initiate a drag. This is used to ensure we start a drag only for event
// streams intended to trigger a drag (See crbug.com/1204572).
bool should_drag_on_gesture_scroll_ = false;
// Determines whether to show the context menu after a tap gesture.
const bool context_menu_after_tap_;
// The point at which the initial gesture tap event occurred and at which the
// drag will start.
gfx::Point touch_drag_start_point_;
// Timer that starts when a press gesture is encountered and runs for the
// duration of a long press. The timer is stopped if the tap gesture is
// interrupted (eg by a scroll start gesture).
std::unique_ptr<base::RetainingOneShotTimer> long_press_timer_;
base::ScopedObservation<ui::NativeTheme, ui::NativeThemeObserver>
theme_observation_{this};
base::WeakPtrFactory<TabStripPageHandler> weak_ptr_factory_{this};
};
#endif // CHROME_BROWSER_UI_WEBUI_TAB_STRIP_TAB_STRIP_PAGE_HANDLER_H_
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