8ed34bf203
On the Mac platform, OffScreenWebContentsView uses Automatic Reference Counting (ARC) to handle the lifecycle of offScreenView_. However, this private member variable is not initialized and its value is undefined. In some cases, it is initialized to a garbage value, which may cause ARC to release the value incorrectly, resulting in a crash. Co-authored-by: trop[bot] <37223003+trop[bot]@users.noreply.github.com> Co-authored-by: Jinli Wu <wujinli@bytedance.com>
118 lines
4.2 KiB
Objective-C
118 lines
4.2 KiB
Objective-C
// Copyright (c) 2016 GitHub, Inc.
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// Use of this source code is governed by the MIT license that can be
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// found in the LICENSE file.
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#ifndef ELECTRON_SHELL_BROWSER_OSR_OSR_WEB_CONTENTS_VIEW_H_
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#define ELECTRON_SHELL_BROWSER_OSR_OSR_WEB_CONTENTS_VIEW_H_
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#include "shell/browser/native_window.h"
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#include "shell/browser/native_window_observer.h"
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#include "base/memory/raw_ptr.h"
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#include "base/memory/raw_ptr_exclusion.h"
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#include "content/browser/renderer_host/render_view_host_delegate_view.h" // nogncheck
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#include "content/browser/web_contents/web_contents_view.h" // nogncheck
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#include "content/public/browser/web_contents.h"
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#include "shell/browser/osr/osr_render_widget_host_view.h"
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#include "third_party/blink/public/common/page/drag_mojom_traits.h"
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#if BUILDFLAG(IS_MAC)
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#ifdef __OBJC__
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@class OffScreenView;
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#else
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class OffScreenView;
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#endif
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#endif
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namespace electron {
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class OffScreenWebContentsView : public content::WebContentsView,
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public content::RenderViewHostDelegateView,
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private NativeWindowObserver {
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public:
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OffScreenWebContentsView(bool transparent, const OnPaintCallback& callback);
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~OffScreenWebContentsView() override;
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void SetWebContents(content::WebContents*);
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void SetNativeWindow(NativeWindow* window);
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// NativeWindowObserver:
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void OnWindowResize() override;
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void OnWindowClosed() override;
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gfx::Size GetSize();
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// content::WebContentsView:
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gfx::NativeView GetNativeView() const override;
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gfx::NativeView GetContentNativeView() const override;
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gfx::NativeWindow GetTopLevelNativeWindow() const override;
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gfx::Rect GetContainerBounds() const override;
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void Focus() override;
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void SetInitialFocus() override;
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void StoreFocus() override;
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void RestoreFocus() override;
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void FocusThroughTabTraversal(bool reverse) override;
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content::DropData* GetDropData() const override;
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gfx::Rect GetViewBounds() const override;
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void CreateView(gfx::NativeView context) override;
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content::RenderWidgetHostViewBase* CreateViewForWidget(
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content::RenderWidgetHost* render_widget_host) override;
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content::RenderWidgetHostViewBase* CreateViewForChildWidget(
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content::RenderWidgetHost* render_widget_host) override;
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void SetPageTitle(const std::u16string& title) override;
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void RenderViewReady() override;
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void RenderViewHostChanged(content::RenderViewHost* old_host,
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content::RenderViewHost* new_host) override;
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void SetOverscrollControllerEnabled(bool enabled) override;
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void OnCapturerCountChanged() override;
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void FullscreenStateChanged(bool is_fullscreen) override;
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void UpdateWindowControlsOverlay(const gfx::Rect& bounding_rect) override;
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content::BackForwardTransitionAnimationManager*
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GetBackForwardTransitionAnimationManager() override;
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#if BUILDFLAG(IS_MAC)
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bool CloseTabAfterEventTrackingIfNeeded() override;
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#endif
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// content::RenderViewHostDelegateView
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void StartDragging(const content::DropData& drop_data,
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const url::Origin& source_origin,
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blink::DragOperationsMask allowed_ops,
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const gfx::ImageSkia& image,
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const gfx::Vector2d& cursor_offset,
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const gfx::Rect& drag_obj_rect,
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const blink::mojom::DragEventSourceInfo& event_info,
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content::RenderWidgetHostImpl* source_rwh) override;
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void UpdateDragOperation(ui::mojom::DragOperation operation,
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bool document_is_handling_drag) override;
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void SetPainting(bool painting);
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bool IsPainting() const;
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void SetFrameRate(int frame_rate);
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int GetFrameRate() const;
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private:
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#if BUILDFLAG(IS_MAC)
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void PlatformCreate();
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void PlatformDestroy();
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#endif
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OffScreenRenderWidgetHostView* GetView() const;
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raw_ptr<NativeWindow> native_window_ = nullptr;
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const bool transparent_;
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bool painting_ = true;
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int frame_rate_ = 60;
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OnPaintCallback callback_;
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// Weak refs.
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raw_ptr<content::WebContents> web_contents_ = nullptr;
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#if BUILDFLAG(IS_MAC)
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RAW_PTR_EXCLUSION OffScreenView* offScreenView_ = nullptr;
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#endif
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};
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} // namespace electron
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#endif // ELECTRON_SHELL_BROWSER_OSR_OSR_WEB_CONTENTS_VIEW_H_
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