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// Copyright (c) 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 "chrome/browser/ui/exclusive_access/mouse_lock_controller.h"
#include "chrome/browser/chrome_notification_types.h"
#include "chrome/browser/content_settings/host_content_settings_map_factory.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/ui/browser.h"
#include "chrome/browser/ui/exclusive_access/exclusive_access_context.h"
#include "chrome/browser/ui/exclusive_access/exclusive_access_manager.h"
#include "chrome/browser/ui/exclusive_access/fullscreen_controller.h"
#include "components/content_settings/core/browser/host_content_settings_map.h"
#include "content/public/browser/notification_service.h"
#include "content/public/browser/render_view_host.h"
#include "content/public/browser/render_widget_host.h"
#include "content/public/browser/render_widget_host_view.h"
#include "content/public/browser/web_contents.h"
using content::RenderViewHost;
using content::WebContents;
MouseLockController::MouseLockController(ExclusiveAccessManager* manager)
: ExclusiveAccessControllerBase(manager),
mouse_lock_state_(MOUSELOCK_NOT_REQUESTED),
fake_mouse_lock_for_test_(false) {}
MouseLockController::~MouseLockController() {
}
bool MouseLockController::IsMouseLocked() const {
return mouse_lock_state_ == MOUSELOCK_ACCEPTED ||
mouse_lock_state_ == MOUSELOCK_ACCEPTED_SILENTLY;
}
bool MouseLockController::IsMouseLockSilentlyAccepted() const {
return mouse_lock_state_ == MOUSELOCK_ACCEPTED_SILENTLY;
}
void MouseLockController::RequestToLockMouse(WebContents* web_contents,
bool user_gesture,
bool last_unlocked_by_target) {
DCHECK(!IsMouseLocked());
NotifyMouseLockChange();
// Must have a user gesture to prevent misbehaving sites from constantly
// re-locking the mouse. Exceptions are when the page has unlocked
// (i.e. not the user), or if we're in tab fullscreen (user gesture required
// for that)
if (!last_unlocked_by_target && !user_gesture &&
!exclusive_access_manager()
->fullscreen_controller()
->IsFullscreenForTabOrPending(web_contents)) {
web_contents->GotResponseToLockMouseRequest(false);
return;
}
SetTabWithExclusiveAccess(web_contents);
ExclusiveAccessBubbleType bubble_type =
exclusive_access_manager()->GetExclusiveAccessExitBubbleType();
switch (GetMouseLockSetting(web_contents->GetURL())) {
case CONTENT_SETTING_ALLOW:
// If bubble already displaying buttons we must not lock the mouse yet,
// or it would prevent pressing those buttons. Instead, merge the request.
if (!exclusive_access_manager()
->fullscreen_controller()
->IsPrivilegedFullscreenForTab() &&
exclusive_access_bubble::ShowButtonsForType(bubble_type)) {
mouse_lock_state_ = MOUSELOCK_REQUESTED;
} else {
// Lock mouse.
if (fake_mouse_lock_for_test_ ||
web_contents->GotResponseToLockMouseRequest(true)) {
if (last_unlocked_by_target) {
mouse_lock_state_ = MOUSELOCK_ACCEPTED_SILENTLY;
} else {
mouse_lock_state_ = MOUSELOCK_ACCEPTED;
}
} else {
SetTabWithExclusiveAccess(nullptr);
mouse_lock_state_ = MOUSELOCK_NOT_REQUESTED;
}
}
break;
case CONTENT_SETTING_BLOCK:
web_contents->GotResponseToLockMouseRequest(false);
SetTabWithExclusiveAccess(nullptr);
mouse_lock_state_ = MOUSELOCK_NOT_REQUESTED;
break;
case CONTENT_SETTING_ASK:
mouse_lock_state_ = MOUSELOCK_REQUESTED;
break;
default:
NOTREACHED();
}
exclusive_access_manager()->UpdateExclusiveAccessExitBubbleContent();
}
void MouseLockController::ExitExclusiveAccessIfNecessary() {
NotifyTabExclusiveAccessLost();
}
void MouseLockController::NotifyTabExclusiveAccessLost() {
WebContents* tab = exclusive_access_tab();
if (tab) {
if (IsMouseLockRequested()) {
tab->GotResponseToLockMouseRequest(false);
NotifyMouseLockChange();
} else {
UnlockMouse();
}
SetTabWithExclusiveAccess(nullptr);
mouse_lock_state_ = MOUSELOCK_NOT_REQUESTED;
exclusive_access_manager()->UpdateExclusiveAccessExitBubbleContent();
}
}
bool MouseLockController::HandleUserPressedEscape() {
if (IsMouseLocked() || IsMouseLockRequested()) {
ExitExclusiveAccessIfNecessary();
return true;
}
return false;
}
void MouseLockController::ExitExclusiveAccessToPreviousState() {
// Nothing to do for mouse lock.
}
bool MouseLockController::OnAcceptExclusiveAccessPermission() {
ExclusiveAccessBubbleType bubble_type =
exclusive_access_manager()->GetExclusiveAccessExitBubbleType();
bool mouse_lock = false;
exclusive_access_bubble::PermissionRequestedByType(bubble_type, nullptr,
&mouse_lock);
DCHECK(!(mouse_lock && IsMouseLocked()));
if (mouse_lock && !IsMouseLocked()) {
DCHECK(IsMouseLockRequested());
HostContentSettingsMap* settings_map =
HostContentSettingsMapFactory::GetForProfile(
exclusive_access_manager()->context()->GetProfile());
GURL url = GetExclusiveAccessBubbleURL();
ContentSettingsPattern pattern = ContentSettingsPattern::FromURL(url);
// TODO(markusheintz): We should allow patterns for all possible URLs here.
//
// Do not store preference on file:// URLs, they don't have a clean
// origin policy.
// TODO(estark): Revisit this when crbug.com/455882 is fixed.
if (!url.SchemeIsFile() && pattern.IsValid()) {
settings_map->SetContentSetting(pattern,
ContentSettingsPattern::Wildcard(),
CONTENT_SETTINGS_TYPE_MOUSELOCK,
std::string(), CONTENT_SETTING_ALLOW);
}
WebContents* tab = exclusive_access_tab();
if (tab && tab->GotResponseToLockMouseRequest(true)) {
mouse_lock_state_ = MOUSELOCK_ACCEPTED;
} else {
mouse_lock_state_ = MOUSELOCK_NOT_REQUESTED;
SetTabWithExclusiveAccess(nullptr);
}
NotifyMouseLockChange();
return true;
}
return false;
}
bool MouseLockController::OnDenyExclusiveAccessPermission() {
WebContents* tab = exclusive_access_tab();
if (tab && IsMouseLockRequested()) {
mouse_lock_state_ = MOUSELOCK_NOT_REQUESTED;
tab->GotResponseToLockMouseRequest(false);
SetTabWithExclusiveAccess(nullptr);
NotifyMouseLockChange();
return true;
}
return false;
}
void MouseLockController::LostMouseLock() {
mouse_lock_state_ = MOUSELOCK_NOT_REQUESTED;
SetTabWithExclusiveAccess(nullptr);
NotifyMouseLockChange();
exclusive_access_manager()->UpdateExclusiveAccessExitBubbleContent();
}
bool MouseLockController::IsMouseLockRequested() const {
return mouse_lock_state_ == MOUSELOCK_REQUESTED;
}
void MouseLockController::NotifyMouseLockChange() {
content::NotificationService::current()->Notify(
chrome::NOTIFICATION_MOUSE_LOCK_CHANGED,
content::Source<MouseLockController>(this),
content::NotificationService::NoDetails());
}
void MouseLockController::UnlockMouse() {
WebContents* tab = exclusive_access_tab();
if (!tab)
return;
content::RenderWidgetHostView* mouse_lock_view = nullptr;
FullscreenController* fullscreen_controller =
exclusive_access_manager()->fullscreen_controller();
if ((fullscreen_controller->exclusive_access_tab() == tab) &&
fullscreen_controller->IsPrivilegedFullscreenForTab()) {
mouse_lock_view =
exclusive_access_tab()->GetFullscreenRenderWidgetHostView();
}
if (!mouse_lock_view) {
RenderViewHost* const rvh = exclusive_access_tab()->GetRenderViewHost();
if (rvh)
mouse_lock_view = rvh->GetWidget()->GetView();
}
if (mouse_lock_view)
mouse_lock_view->UnlockMouse();
}
ContentSetting MouseLockController::GetMouseLockSetting(const GURL& url) const {
// If simplified UI is enabled, never ask the user, just auto-allow. We no
// longer give users control over this at the settings level (since it is very
// easy to escape mouse lock when it happens). Even if the user has blocked
// access to this site in the past, we now ignore that setting.
if (ExclusiveAccessManager::IsSimplifiedFullscreenUIEnabled())
return CONTENT_SETTING_ALLOW;
// Always ask on file:// URLs, since we can't meaningfully make the
// decision stick for a particular origin.
// TODO(estark): Revisit this when crbug.com/455882 is fixed.
if (url.SchemeIsFile())
return CONTENT_SETTING_ASK;
if (exclusive_access_manager()
->fullscreen_controller()
->IsPrivilegedFullscreenForTab())
return CONTENT_SETTING_ALLOW;
HostContentSettingsMap* settings_map =
HostContentSettingsMapFactory::GetForProfile(
exclusive_access_manager()->context()->GetProfile());
ContentSetting setting = settings_map->GetContentSetting(
url, url, CONTENT_SETTINGS_TYPE_MOUSELOCK, std::string());
return setting;
}
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