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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/ui/views/hung_renderer_view_win.h"
#include "base/win/metro.h"
#include "chrome/browser/hang_monitor/hang_crash_dump_win.h"
#include "chrome/browser/ui/views/hung_renderer_view.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/render_process_host.h"
#include "grit/generated_resources.h"
#include "ui/base/l10n/l10n_util.h"
#include "win8/util/win8_util.h"
// Metro functions for displaying and dismissing a dialog box.
typedef void (*MetroShowDialogBox)(
const wchar_t* title,
const wchar_t* content,
const wchar_t* button1_label,
const wchar_t* button2_label,
base::win::MetroDialogButtonPressedHandler button1_handler,
base::win::MetroDialogButtonPressedHandler button2_handler);
typedef void (*MetroDismissDialogBox)();
using content::BrowserThread;
using content::WebContents;
HungRendererDialogMetro* HungRendererDialogMetro::g_instance_ = NULL;
bool PlatformShowCustomHungRendererDialog(WebContents* contents) {
if (!win8::IsSingleWindowMetroMode())
return false;
HungRendererDialogMetro::Create()->Show(contents);
return true;
}
bool PlatformHideCustomHungRendererDialog(WebContents* contents) {
if (!win8::IsSingleWindowMetroMode())
return false;
if (HungRendererDialogMetro::GetInstance())
HungRendererDialogMetro::GetInstance()->Hide(contents);
return true;
}
// static
void HungRendererDialogView::KillRendererProcess(
base::ProcessHandle process_handle) {
// Try to generate a crash report for the hung process.
CrashDumpAndTerminateHungChildProcess(process_handle);
}
// static
HungRendererDialogMetro* HungRendererDialogMetro::Create() {
if (!GetInstance())
g_instance_ = new HungRendererDialogMetro;
return g_instance_;
}
// static
HungRendererDialogMetro* HungRendererDialogMetro::GetInstance() {
return g_instance_;
}
HungRendererDialogMetro::HungRendererDialogMetro()
: contents_(NULL),
metro_dialog_displayed_(false) {
}
HungRendererDialogMetro::~HungRendererDialogMetro() {
g_instance_ = NULL;
}
void HungRendererDialogMetro::Show(WebContents* contents) {
if (!metro_dialog_displayed_ &&
HungRendererDialogView::IsFrameActive(contents)) {
HMODULE metro_dll = base::win::GetMetroModule();
DCHECK(metro_dll);
if (metro_dll) {
MetroShowDialogBox show_dialog_box = reinterpret_cast<MetroShowDialogBox>
(::GetProcAddress(metro_dll, "ShowDialogBox"));
DCHECK(show_dialog_box);
if (show_dialog_box) {
string16 dialog_box_title =
l10n_util::GetStringUTF16(IDS_BROWSER_HANGMONITOR_RENDERER_TITLE);
string16 kill_button_label =
l10n_util::GetStringUTF16(IDS_BROWSER_HANGMONITOR_RENDERER_END);
string16 wait_button_label =
l10n_util::GetStringUTF16(IDS_BROWSER_HANGMONITOR_RENDERER_WAIT);
contents_ = contents;
metro_dialog_displayed_ = true;
(*show_dialog_box)(dialog_box_title.c_str(),
contents->GetTitle().c_str(),
kill_button_label.c_str(),
wait_button_label.c_str(),
HungRendererDialogMetro::OnMetroKillProcess,
HungRendererDialogMetro::OnMetroWait);
}
}
}
}
void HungRendererDialogMetro::Hide(WebContents* contents) {
HMODULE metro_dll = base::win::GetMetroModule();
DCHECK(metro_dll);
if (metro_dll) {
MetroDismissDialogBox dismiss_dialog_box =
reinterpret_cast<MetroDismissDialogBox>
(::GetProcAddress(metro_dll, "DismissDialogBox"));
DCHECK(dismiss_dialog_box);
if (dismiss_dialog_box) {
(*dismiss_dialog_box)();
ResetMetroState();
}
}
}
void HungRendererDialogMetro::ResetMetroState() {
metro_dialog_displayed_ = false;
contents_ = NULL;
delete g_instance_;
}
// static
void HungRendererDialogMetro::OnMetroKillProcess() {
// Metro chrome will invoke these handlers on the metro thread. Ensure that
// we switch to the UI thread.
if (!BrowserThread::CurrentlyOn(BrowserThread::UI)) {
BrowserThread::PostTask(
BrowserThread::UI, FROM_HERE,
base::Bind(HungRendererDialogMetro::OnMetroKillProcess));
return;
}
// Its possible that we got deleted in the meantime.
if (!GetInstance())
return;
DCHECK(GetInstance()->contents_);
HungRendererDialogView::KillRendererProcess(
GetInstance()->contents_->GetRenderProcessHost()->GetHandle());
// The metro dialog box is dismissed when the button handlers are invoked.
GetInstance()->ResetMetroState();
}
// static
void HungRendererDialogMetro::OnMetroWait() {
// Metro chrome will invoke these handlers on the metro thread. Ensure that
// we switch to the UI thread.
if (!BrowserThread::CurrentlyOn(BrowserThread::UI)) {
BrowserThread::PostTask(
BrowserThread::UI, FROM_HERE,
base::Bind(HungRendererDialogMetro::OnMetroWait));
return;
}
// Its possible that we got deleted in the meantime.
if (!GetInstance())
return;
GetInstance()->ResetMetroState();
}
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