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// 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.
#include "chrome/browser/printing/print_view_manager.h"
#include <map>
#include "base/bind.h"
#include "base/lazy_instance.h"
#include "base/metrics/histogram.h"
#include "chrome/browser/browser_process.h"
#include "chrome/browser/printing/print_job_manager.h"
#include "chrome/browser/printing/print_preview_dialog_controller.h"
#include "chrome/browser/printing/print_view_manager_observer.h"
#include "chrome/browser/ui/webui/print_preview/print_preview_ui.h"
#include "chrome/common/print_messages.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/web_contents.h"
using content::BrowserThread;
DEFINE_WEB_CONTENTS_USER_DATA_KEY(printing::PrintViewManager);
namespace {
// Keeps track of pending scripted print preview closures.
// No locking, only access on the UI thread.
typedef std::map<content::RenderProcessHost*, base::Closure>
ScriptedPrintPreviewClosureMap;
static base::LazyInstance<ScriptedPrintPreviewClosureMap>
g_scripted_print_preview_closure_map = LAZY_INSTANCE_INITIALIZER;
} // namespace
namespace printing {
PrintViewManager::PrintViewManager(content::WebContents* web_contents)
: PrintViewManagerBase(web_contents),
observer_(NULL),
print_preview_state_(NOT_PREVIEWING),
scripted_print_preview_rph_(NULL) {
}
PrintViewManager::~PrintViewManager() {
DCHECK_EQ(NOT_PREVIEWING, print_preview_state_);
}
#if defined(ENABLE_BASIC_PRINTING)
bool PrintViewManager::PrintForSystemDialogNow() {
return PrintNowInternal(new PrintMsg_PrintForSystemDialog(routing_id()));
}
bool PrintViewManager::BasicPrint() {
PrintPreviewDialogController* dialog_controller =
PrintPreviewDialogController::GetInstance();
if (!dialog_controller)
return false;
content::WebContents* print_preview_dialog =
dialog_controller->GetPrintPreviewForContents(web_contents());
if (print_preview_dialog) {
if (!print_preview_dialog->GetWebUI())
return false;
PrintPreviewUI* print_preview_ui = static_cast<PrintPreviewUI*>(
print_preview_dialog->GetWebUI()->GetController());
print_preview_ui->OnShowSystemDialog();
return true;
} else {
return PrintNow();
}
}
#endif // ENABLE_BASIC_PRINTING
bool PrintViewManager::PrintPreviewNow(bool selection_only) {
// Users can send print commands all they want and it is beyond
// PrintViewManager's control. Just ignore the extra commands.
// See http://crbug.com/136842 for example.
if (print_preview_state_ != NOT_PREVIEWING)
return false;
if (!PrintNowInternal(new PrintMsg_InitiatePrintPreview(routing_id(),
selection_only))) {
return false;
}
print_preview_state_ = USER_INITIATED_PREVIEW;
return true;
}
void PrintViewManager::PrintPreviewForWebNode() {
if (print_preview_state_ != NOT_PREVIEWING)
return;
print_preview_state_ = USER_INITIATED_PREVIEW;
}
void PrintViewManager::PrintPreviewDone() {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
DCHECK_NE(NOT_PREVIEWING, print_preview_state_);
if (print_preview_state_ == SCRIPTED_PREVIEW) {
ScriptedPrintPreviewClosureMap& map =
g_scripted_print_preview_closure_map.Get();
ScriptedPrintPreviewClosureMap::iterator it =
map.find(scripted_print_preview_rph_);
CHECK(it != map.end());
it->second.Run();
map.erase(scripted_print_preview_rph_);
scripted_print_preview_rph_ = NULL;
}
print_preview_state_ = NOT_PREVIEWING;
}
void PrintViewManager::set_observer(PrintViewManagerObserver* observer) {
DCHECK(!observer || !observer_);
observer_ = observer;
}
void PrintViewManager::RenderProcessGone(base::TerminationStatus status) {
print_preview_state_ = NOT_PREVIEWING;
PrintViewManagerBase::RenderProcessGone(status);
}
void PrintViewManager::OnDidShowPrintDialog() {
if (observer_)
observer_->OnPrintDialogShown();
}
void PrintViewManager::OnSetupScriptedPrintPreview(IPC::Message* reply_msg) {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
ScriptedPrintPreviewClosureMap& map =
g_scripted_print_preview_closure_map.Get();
content::RenderProcessHost* rph = web_contents()->GetRenderProcessHost();
// This should always be 0 once we get modal window.print().
if (map.count(rph) != 0) {
// Renderer already handling window.print() in another View.
Send(reply_msg);
return;
}
if (print_preview_state_ != NOT_PREVIEWING) {
// If a user initiated print dialog is already open, ignore the scripted
// print message.
DCHECK_EQ(USER_INITIATED_PREVIEW, print_preview_state_);
Send(reply_msg);
return;
}
PrintPreviewDialogController* dialog_controller =
PrintPreviewDialogController::GetInstance();
if (!dialog_controller) {
Send(reply_msg);
return;
}
print_preview_state_ = SCRIPTED_PREVIEW;
base::Closure callback =
base::Bind(&PrintViewManager::OnScriptedPrintPreviewReply,
base::Unretained(this),
reply_msg);
map[rph] = callback;
scripted_print_preview_rph_ = rph;
}
void PrintViewManager::OnShowScriptedPrintPreview(bool source_is_modifiable) {
PrintPreviewDialogController* dialog_controller =
PrintPreviewDialogController::GetInstance();
if (!dialog_controller) {
PrintPreviewDone();
return;
}
dialog_controller->PrintPreview(web_contents());
PrintHostMsg_RequestPrintPreview_Params params;
params.is_modifiable = source_is_modifiable;
PrintPreviewUI::SetInitialParams(
dialog_controller->GetPrintPreviewForContents(web_contents()), params);
}
void PrintViewManager::OnScriptedPrintPreviewReply(IPC::Message* reply_msg) {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
Send(reply_msg);
}
bool PrintViewManager::OnMessageReceived(const IPC::Message& message) {
bool handled = true;
IPC_BEGIN_MESSAGE_MAP(PrintViewManager, message)
IPC_MESSAGE_HANDLER(PrintHostMsg_DidShowPrintDialog, OnDidShowPrintDialog)
IPC_MESSAGE_HANDLER_DELAY_REPLY(PrintHostMsg_SetupScriptedPrintPreview,
OnSetupScriptedPrintPreview)
IPC_MESSAGE_HANDLER(PrintHostMsg_ShowScriptedPrintPreview,
OnShowScriptedPrintPreview)
IPC_MESSAGE_UNHANDLED(handled = false)
IPC_END_MESSAGE_MAP()
return handled ? true : PrintViewManagerBase::OnMessageReceived(message);
}
} // namespace printing
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