| // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef CHROME_BROWSER_UI_TAB_CONTENTS_CORE_TAB_HELPER_H_ |
| #define CHROME_BROWSER_UI_TAB_CONTENTS_CORE_TAB_HELPER_H_ |
| |
| #include <string> |
| |
| #include "base/callback.h" |
| #include "base/macros.h" |
| #include "base/memory/weak_ptr.h" |
| #include "base/time/time.h" |
| #include "chrome/common/chrome_render_frame.mojom.h" |
| #include "content/public/browser/web_contents_observer.h" |
| #include "content/public/browser/web_contents_user_data.h" |
| #include "ui/gfx/geometry/size.h" |
| #include "url/gurl.h" |
| |
| // Per-tab class to handle functionality that is core to the operation of tabs. |
| class CoreTabHelper : public content::WebContentsObserver, |
| public content::WebContentsUserData<CoreTabHelper> { |
| public: |
| ~CoreTabHelper() override; |
| |
| // Initial title assigned to NavigationEntries from Navigate. |
| static base::string16 GetDefaultTitle(); |
| |
| // Returns a human-readable description the tab's loading state. |
| base::string16 GetStatusText() const; |
| |
| void UpdateContentRestrictions(int content_restrictions); |
| |
| // Perform an image search for the image that triggered the context menu. The |
| // |src_url| is passed to the search request and is not used directly to fetch |
| // the image resources. |
| void SearchByImageInNewTab(content::RenderFrameHost* render_frame_host, |
| const GURL& src_url); |
| |
| void set_new_tab_start_time(const base::TimeTicks& time) { |
| new_tab_start_time_ = time; |
| } |
| |
| base::TimeTicks new_tab_start_time() const { return new_tab_start_time_; } |
| int content_restrictions() const { return content_restrictions_; } |
| |
| std::unique_ptr<content::WebContents> SwapWebContents( |
| std::unique_ptr<content::WebContents> new_contents, |
| bool did_start_load, |
| bool did_finish_load); |
| |
| private: |
| explicit CoreTabHelper(content::WebContents* web_contents); |
| friend class content::WebContentsUserData<CoreTabHelper>; |
| |
| static bool GetStatusTextForWebContents(base::string16* status_text, |
| content::WebContents* source); |
| |
| // content::WebContentsObserver overrides: |
| void DidStartLoading() override; |
| void OnVisibilityChanged(content::Visibility visibility) override; |
| void NavigationEntriesDeleted() override; |
| |
| void DoSearchByImageInNewTab( |
| mojo::AssociatedRemote<chrome::mojom::ChromeRenderFrame> |
| chrome_render_frame, |
| const GURL& src_url, |
| const std::vector<uint8_t>& thumbnail_data, |
| const gfx::Size& original_size, |
| const std::string& image_extension); |
| |
| // The time when we started to create the new tab page. This time is from |
| // before we created this WebContents. |
| base::TimeTicks new_tab_start_time_; |
| |
| // Content restrictions, used to disable print/copy etc based on content's |
| // (full-page plugins for now only) permissions. |
| int content_restrictions_; |
| |
| base::WeakPtrFactory<CoreTabHelper> weak_factory_{this}; |
| |
| WEB_CONTENTS_USER_DATA_KEY_DECL(); |
| |
| DISALLOW_COPY_AND_ASSIGN(CoreTabHelper); |
| }; |
| |
| #endif // CHROME_BROWSER_UI_TAB_CONTENTS_CORE_TAB_HELPER_H_ |