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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 COMPONENTS_PDF_BROWSER_PDF_STREAM_DELEGATE_H_
#define COMPONENTS_PDF_BROWSER_PDF_STREAM_DELEGATE_H_
#include <optional>
#include <string>
#include "base/memory/raw_ptr_exclusion.h"
#include "content/public/browser/frame_tree_node_id.h"
#include "third_party/skia/include/core/SkColor.h"
#include "url/gurl.h"
namespace content {
class NavigationHandle;
class RenderFrameHost;
} // namespace content
namespace pdf {
// Delegate for obtaining information from the `extensions::StreamContainer` for
// the PDF viewer. This avoids a dependency on `//extensions/browser`, which
// would be a layering violation.
class PdfStreamDelegate {
public:
struct StreamInfo {
StreamInfo();
StreamInfo(const StreamInfo&);
StreamInfo(StreamInfo&&);
StreamInfo& operator=(const StreamInfo&);
StreamInfo& operator=(StreamInfo&&);
~StreamInfo();
GURL stream_url;
GURL original_url;
// Script to be injected into the internal plugin frame.
// RAW_PTR_EXCLUSION: Points to an immutable string with static storage
// duration.
RAW_PTR_EXCLUSION const std::string* injected_script = nullptr;
SkColor background_color = SK_ColorTRANSPARENT;
bool full_frame = false;
bool allow_javascript = false;
bool use_skia = false;
std::string coep_header;
};
virtual ~PdfStreamDelegate() = default;
// Maps the navigation to the original URL. This method should associate a
// `StreamInfo` with the `blink::Document` for `navigation_handle`'s parent
// `RenderFrameHost`, for later retrieval by `GetStreamInfo()`.
virtual std::optional<GURL> MapToOriginalUrl(
content::NavigationHandle& navigation_handle) = 0;
// Gets the stream information associated with the given `RenderFrameHost`.
// The frame must be a PDF extension frame or Print Preview's frame.
// Returns null if there is no associated stream or if `embedder_frame` is
// `nullptr`.
virtual std::optional<StreamInfo> GetStreamInfo(
content::RenderFrameHost* embedder_frame) = 0;
// Called after calculating sandbox flags for the PDF embedder frame and it's
// determined that the frame is sandboxed. This signals that the PDF
// navigation will fail and gives `PdfStreamDelegate` a chance to clean up.
virtual void OnPdfEmbedderSandboxed(
content::FrameTreeNodeId frame_tree_node_id) = 0;
// Determines whether navigation attempts in the PDF frames should be allowed.
// Navigation attempts in PDF extension and content frames should be canceled
// if they are not related to PDF viewer setup.
virtual bool ShouldAllowPdfFrameNavigation(
content::NavigationHandle* navigation_handle) = 0;
// Determines whether navigation attempts in the PDF extension frame should be
// allowed. If MimeHandlerGuestView is in use, don't allow navigations away
// from the extension's origin in the guest's main frame.
virtual bool ShouldAllowPdfExtensionFrameNavigation(
content::NavigationHandle* navigation_handle) = 0;
};
} // namespace pdf
#endif // COMPONENTS_PDF_BROWSER_PDF_STREAM_DELEGATE_H_
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