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// Copyright 2015 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.
#include "components/printing/browser/print_manager.h"
#include "base/bind.h"
#include "build/build_config.h"
#include "components/printing/common/print_messages.h"
#include "content/public/browser/render_frame_host.h"
#include "third_party/blink/public/common/associated_interfaces/associated_interface_provider.h"
namespace printing {
struct PrintManager::FrameDispatchHelper {
PrintManager* manager;
content::RenderFrameHost* render_frame_host;
bool Send(IPC::Message* msg) { return render_frame_host->Send(msg); }
void OnGetDefaultPrintSettings(IPC::Message* reply_msg) {
manager->OnGetDefaultPrintSettings(render_frame_host, reply_msg);
}
void OnScriptedPrint(const PrintHostMsg_ScriptedPrint_Params& scripted_params,
IPC::Message* reply_msg) {
manager->OnScriptedPrint(render_frame_host, scripted_params, reply_msg);
}
void OnDidPrintDocument(const PrintHostMsg_DidPrintDocument_Params& params,
IPC::Message* reply_msg) {
// If DidPrintDocument message was received then need to transition from
// a variable allocated on stack (which has efficient memory management
// when dealing with any other incoming message) to a persistent variable
// on the heap that can be referenced by the asynchronous processing which
// occurs beyond the scope of PrintViewManagerBase::OnMessageReceived().
manager->OnDidPrintDocument(
render_frame_host, params,
std::make_unique<DelayedFrameDispatchHelper>(
manager->web_contents(), render_frame_host, reply_msg));
}
};
PrintManager::DelayedFrameDispatchHelper::DelayedFrameDispatchHelper(
content::WebContents* contents,
content::RenderFrameHost* render_frame_host,
IPC::Message* reply_msg)
: content::WebContentsObserver(contents),
render_frame_host_(render_frame_host),
reply_msg_(reply_msg) {}
PrintManager::DelayedFrameDispatchHelper::~DelayedFrameDispatchHelper() {
if (reply_msg_) {
PrintHostMsg_DidPrintDocument::WriteReplyParams(reply_msg_, false);
render_frame_host_->Send(reply_msg_);
}
}
void PrintManager::DelayedFrameDispatchHelper::SendCompleted() {
if (!reply_msg_)
return;
PrintHostMsg_DidPrintDocument::WriteReplyParams(reply_msg_, true);
render_frame_host_->Send(reply_msg_);
// This wraps up the one allowed reply for the message.
reply_msg_ = nullptr;
}
void PrintManager::DelayedFrameDispatchHelper::RenderFrameDeleted(
content::RenderFrameHost* render_frame_host) {
if (render_frame_host == render_frame_host_)
reply_msg_ = nullptr;
}
PrintManager::PrintManager(content::WebContents* contents)
: content::WebContentsObserver(contents) {}
PrintManager::~PrintManager() = default;
bool PrintManager::OnMessageReceived(
const IPC::Message& message,
content::RenderFrameHost* render_frame_host) {
FrameDispatchHelper helper = {this, render_frame_host};
bool handled = true;
IPC_BEGIN_MESSAGE_MAP(PrintManager, message)
IPC_MESSAGE_HANDLER(PrintHostMsg_DidGetPrintedPagesCount,
OnDidGetPrintedPagesCount)
IPC_MESSAGE_HANDLER(PrintHostMsg_DidGetDocumentCookie,
OnDidGetDocumentCookie)
IPC_MESSAGE_FORWARD_DELAY_REPLY(
PrintHostMsg_GetDefaultPrintSettings, &helper,
FrameDispatchHelper::OnGetDefaultPrintSettings)
IPC_MESSAGE_FORWARD_DELAY_REPLY(PrintHostMsg_ScriptedPrint, &helper,
FrameDispatchHelper::OnScriptedPrint)
IPC_MESSAGE_FORWARD_DELAY_REPLY(PrintHostMsg_DidPrintDocument, &helper,
FrameDispatchHelper::OnDidPrintDocument);
IPC_MESSAGE_HANDLER(PrintHostMsg_PrintingFailed, OnPrintingFailed)
IPC_MESSAGE_UNHANDLED(handled = false)
IPC_END_MESSAGE_MAP()
return handled;
}
void PrintManager::RenderFrameDeleted(
content::RenderFrameHost* render_frame_host) {
print_render_frames_.erase(render_frame_host);
}
void PrintManager::OnDidGetPrintedPagesCount(int cookie,
int number_pages) {
DCHECK_GT(cookie, 0);
DCHECK_GT(number_pages, 0);
number_pages_ = number_pages;
}
void PrintManager::OnDidGetDocumentCookie(int cookie) {
cookie_ = cookie;
}
void PrintManager::OnPrintingFailed(int cookie) {
if (cookie != cookie_) {
NOTREACHED();
return;
}
#if defined(OS_ANDROID)
PdfWritingDone(0);
#endif
}
const mojo::AssociatedRemote<printing::mojom::PrintRenderFrame>&
PrintManager::GetPrintRenderFrame(content::RenderFrameHost* rfh) {
auto it = print_render_frames_.find(rfh);
if (it == print_render_frames_.end()) {
mojo::AssociatedRemote<printing::mojom::PrintRenderFrame> remote;
rfh->GetRemoteAssociatedInterfaces()->GetInterface(&remote);
it = print_render_frames_.insert(std::make_pair(rfh, std::move(remote))).first;
} else if (it->second.is_bound() && !it->second.is_connected()) {
// When print preview is closed, the remote is disconnected from the
// receiver. Reset and bind the remote before using it again.
it->second.reset();
rfh->GetRemoteAssociatedInterfaces()->GetInterface(&it->second);
}
return it->second;
}
void PrintManager::PrintingRenderFrameDeleted() {
#if defined(OS_ANDROID)
PdfWritingDone(0);
#endif
}
} // namespace printing
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