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// 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.
#ifndef CHROME_BROWSER_UI_WEBUI_TAB_STRIP_TAB_STRIP_UI_H_
#define CHROME_BROWSER_UI_WEBUI_TAB_STRIP_TAB_STRIP_UI_H_
#include "base/memory/raw_ptr.h"
#include "chrome/browser/ui/webui/tab_strip/tab_strip.mojom.h"
#include "chrome/browser/ui/webui/tab_strip/thumbnail_tracker.h"
#include "chrome/browser/ui/webui/webui_load_timer.h"
#include "content/public/browser/web_ui_controller.h"
#include "mojo/public/cpp/bindings/pending_receiver.h"
#include "mojo/public/cpp/bindings/pending_remote.h"
#include "mojo/public/cpp/bindings/receiver.h"
#include "ui/webui/mojo_web_ui_controller.h"
#include "ui/webui/resources/cr_components/color_change_listener/color_change_listener.mojom.h"
namespace ui {
class ColorChangeHandler;
} // namespace ui
class Browser;
class TabStripPageHandler;
class TabStripUIEmbedder;
// These data types must be in all lowercase.
constexpr char16_t kWebUITabIdDataType[] = u"application/vnd.chromium.tab";
constexpr char16_t kWebUITabGroupIdDataType[] =
u"application/vnd.chromium.tabgroup";
// The WebUI version of the tab strip in the browser. It is currently only
// supported on ChromeOS in tablet mode.
class TabStripUI : public ui::MojoWebUIController,
public tab_strip::mojom::PageHandlerFactory {
public:
explicit TabStripUI(content::WebUI* web_ui);
TabStripUI(const TabStripUI&) = delete;
TabStripUI& operator=(const TabStripUI&) = delete;
~TabStripUI() override;
// Instantiates the implementor of the mojom::PageHandlerFactory mojo
// interface passing the pending receiver that will be internally bound.
void BindInterface(
mojo::PendingReceiver<tab_strip::mojom::PageHandlerFactory> receiver);
// Instantiates the implementor of the mojom::PageHandler mojo interface
// passing the pending receiver that will be internally bound.
void BindInterface(
mojo::PendingReceiver<color_change_listener::mojom::PageHandler>
receiver);
// Initialize TabStripUI with its embedder and the Browser it's running in.
// Must be called exactly once. The WebUI won't work until this is called.
// |Deinitialize| is called during |embedder|'s destructor. It release the
// references taken previously and release the objects depending on them.
void Initialize(Browser* browser, TabStripUIEmbedder* embedder);
void Deinitialize();
// The embedder should call this whenever the result of
// Embedder::GetLayout() changes.
void LayoutChanged();
// The embedder should call this whenever the tab strip gains keyboard focus.
void ReceivedKeyboardFocus();
private:
// tab_strip::mojom::PageHandlerFactory
void CreatePageHandler(
mojo::PendingRemote<tab_strip::mojom::Page> page,
mojo::PendingReceiver<tab_strip::mojom::PageHandler> receiver) override;
WebuiLoadTimer webui_load_timer_;
std::unique_ptr<TabStripPageHandler> page_handler_;
std::unique_ptr<ui::ColorChangeHandler> color_provider_handler_;
mojo::Receiver<tab_strip::mojom::PageHandlerFactory> page_factory_receiver_{
this};
raw_ptr<Browser> browser_ = nullptr;
raw_ptr<TabStripUIEmbedder> embedder_ = nullptr;
WEB_UI_CONTROLLER_TYPE_DECL();
};
#endif // CHROME_BROWSER_UI_WEBUI_TAB_STRIP_TAB_STRIP_UI_H_
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