108 lines
3.6 KiB
C++
108 lines
3.6 KiB
C++
// Copyright 2018 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef ELECTRON_SHELL_BROWSER_BADGING_BADGE_MANAGER_H_
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#define ELECTRON_SHELL_BROWSER_BADGING_BADGE_MANAGER_H_
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#include <memory>
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#include <string>
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#include "components/keyed_service/core/keyed_service.h"
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#include "mojo/public/cpp/bindings/receiver_set.h"
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#include "third_party/abseil-cpp/absl/types/optional.h"
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#include "third_party/blink/public/mojom/badging/badging.mojom.h"
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#include "url/gurl.h"
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namespace content {
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class RenderFrameHost;
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class RenderProcessHost;
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} // namespace content
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namespace badging {
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// The maximum value of badge contents before saturation occurs.
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constexpr int kMaxBadgeContent = 99;
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// Maintains a record of badge contents and dispatches badge changes to a
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// delegate.
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class BadgeManager : public KeyedService, public blink::mojom::BadgeService {
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public:
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BadgeManager();
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~BadgeManager() override;
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// disable copy
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BadgeManager(const BadgeManager&) = delete;
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BadgeManager& operator=(const BadgeManager&) = delete;
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static void BindFrameReceiver(
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content::RenderFrameHost* frame,
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mojo::PendingReceiver<blink::mojom::BadgeService> receiver);
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static void BindServiceWorkerReceiver(
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content::RenderProcessHost* service_worker_process_host,
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const GURL& service_worker_scope,
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mojo::PendingReceiver<blink::mojom::BadgeService> receiver);
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// Determines the text to put on the badge based on some badge_content.
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static std::string GetBadgeString(absl::optional<int> badge_content);
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private:
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// The BindingContext of a mojo request. Allows mojo calls to be tied back
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// to the execution context they belong to without trusting the renderer for
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// that information. This is an abstract base class that different types of
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// execution contexts derive.
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class BindingContext {
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public:
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virtual ~BindingContext() = default;
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};
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// The BindingContext for Window execution contexts.
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class FrameBindingContext final : public BindingContext {
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public:
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FrameBindingContext(int process_id, int frame_id)
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: process_id_(process_id), frame_id_(frame_id) {}
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~FrameBindingContext() override = default;
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int GetProcessId() { return process_id_; }
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int GetFrameId() { return frame_id_; }
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private:
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int process_id_;
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int frame_id_;
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};
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// The BindingContext for ServiceWorkerGlobalScope execution contexts.
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class ServiceWorkerBindingContext final : public BindingContext {
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public:
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ServiceWorkerBindingContext(int process_id, const GURL& scope)
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: process_id_(process_id), scope_(scope) {}
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~ServiceWorkerBindingContext() override = default;
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int GetProcessId() { return process_id_; }
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GURL GetScope() { return scope_; }
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private:
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int process_id_;
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GURL scope_;
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};
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// blink::mojom::BadgeService:
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// Note: These are private to stop them being called outside of mojo as they
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// require a mojo binding context.
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void SetBadge(blink::mojom::BadgeValuePtr value) override;
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void ClearBadge() override;
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// All the mojo receivers for the BadgeManager. Keeps track of the
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// render_frame the binding is associated with, so as to not have to rely
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// on the renderer passing it in.
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mojo::ReceiverSet<blink::mojom::BadgeService, std::unique_ptr<BindingContext>>
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receivers_;
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// Delegate which handles actual setting and clearing of the badge.
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// Note: This is currently only set on Windows and MacOS.
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// std::unique_ptr<BadgeManagerDelegate> delegate_;
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};
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} // namespace badging
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#endif // ELECTRON_SHELL_BROWSER_BADGING_BADGE_MANAGER_H_
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