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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 "content/browser/devtools/protocol/emulation_handler.h"
#include "base/strings/string_number_conversions.h"
#include "content/browser/frame_host/render_frame_host_impl.h"
#include "content/browser/geolocation/geolocation_service_context.h"
#include "content/browser/renderer_host/render_widget_host_impl.h"
#include "content/browser/web_contents/web_contents_impl.h"
#include "content/common/view_messages.h"
#include "content/public/common/url_constants.h"
namespace content {
namespace devtools {
namespace emulation {
using Response = DevToolsProtocolClient::Response;
namespace {
ui::GestureProviderConfigType TouchEmulationConfigurationToType(
const std::string& protocol_value) {
ui::GestureProviderConfigType result =
ui::GestureProviderConfigType::CURRENT_PLATFORM;
if (protocol_value ==
set_touch_emulation_enabled::kConfigurationMobile) {
result = ui::GestureProviderConfigType::GENERIC_MOBILE;
}
if (protocol_value ==
set_touch_emulation_enabled::kConfigurationDesktop) {
result = ui::GestureProviderConfigType::GENERIC_DESKTOP;
}
return result;
}
} // namespace
EmulationHandler::EmulationHandler(page::PageHandler* page_handler)
: touch_emulation_enabled_(false),
device_emulation_enabled_(false),
page_handler_(page_handler),
host_(nullptr)
{
page_handler->SetScreencastListener(this);
}
EmulationHandler::~EmulationHandler() {
}
void EmulationHandler::ScreencastEnabledChanged() {
UpdateTouchEventEmulationState();
}
void EmulationHandler::SetRenderFrameHost(RenderFrameHostImpl* host) {
if (host_ == host)
return;
host_ = host;
UpdateTouchEventEmulationState();
UpdateDeviceEmulationState();
}
void EmulationHandler::Detached() {
touch_emulation_enabled_ = false;
device_emulation_enabled_ = false;
UpdateTouchEventEmulationState();
UpdateDeviceEmulationState();
}
Response EmulationHandler::SetGeolocationOverride(
double* latitude, double* longitude, double* accuracy) {
if (!GetWebContents())
return Response::InternalError("Could not connect to view");
GeolocationServiceContext* geolocation_context =
GetWebContents()->GetGeolocationServiceContext();
scoped_ptr<Geoposition> geoposition(new Geoposition());
if (latitude && longitude && accuracy) {
geoposition->latitude = *latitude;
geoposition->longitude = *longitude;
geoposition->accuracy = *accuracy;
geoposition->timestamp = base::Time::Now();
if (!geoposition->Validate()) {
return Response::InternalError("Invalid geolocation");
}
} else {
geoposition->error_code = Geoposition::ERROR_CODE_POSITION_UNAVAILABLE;
}
geolocation_context->SetOverride(geoposition.Pass());
return Response::OK();
}
Response EmulationHandler::ClearGeolocationOverride() {
if (!GetWebContents())
return Response::InternalError("Could not connect to view");
GeolocationServiceContext* geolocation_context =
GetWebContents()->GetGeolocationServiceContext();
geolocation_context->ClearOverride();
return Response::OK();
}
Response EmulationHandler::SetTouchEmulationEnabled(
bool enabled, const std::string* configuration) {
touch_emulation_enabled_ = enabled;
touch_emulation_configuration_ =
configuration ? *configuration : std::string();
UpdateTouchEventEmulationState();
return Response::FallThrough();
}
Response EmulationHandler::CanEmulate(bool* result) {
#if defined(OS_ANDROID)
*result = false;
#else
*result = true;
if (WebContentsImpl* web_contents = GetWebContents())
*result &= !web_contents->GetVisibleURL().SchemeIs(kChromeDevToolsScheme);
#endif // defined(OS_ANDROID)
return Response::OK();
}
Response EmulationHandler::SetDeviceMetricsOverride(
int width, int height, double device_scale_factor, bool mobile,
bool fit_window, const double* optional_scale,
const double* optional_offset_x, const double* optional_offset_y) {
const static int max_size = 10000000;
const static double max_scale = 10;
if (!host_)
return Response::InternalError("Could not connect to view");
if (width < 0 || height < 0 || width > max_size || height > max_size) {
return Response::InvalidParams(
"Width and height values must be positive, not greater than " +
base::IntToString(max_size));
}
if (device_scale_factor < 0)
return Response::InvalidParams("deviceScaleFactor must be non-negative");
if (optional_scale && (*optional_scale <= 0 || *optional_scale > max_scale)) {
return Response::InvalidParams(
"scale must be positive, not greater than " +
base::IntToString(max_scale));
}
blink::WebDeviceEmulationParams params;
params.screenPosition = mobile ? blink::WebDeviceEmulationParams::Mobile :
blink::WebDeviceEmulationParams::Desktop;
params.deviceScaleFactor = device_scale_factor;
params.viewSize = blink::WebSize(width, height);
params.fitToView = fit_window;
params.scale = optional_scale ? *optional_scale : 1;
params.offset = blink::WebFloatPoint(
optional_offset_x ? *optional_offset_x : 0.f,
optional_offset_y ? *optional_offset_y : 0.f);
if (device_emulation_enabled_ && params == device_emulation_params_)
return Response::OK();
device_emulation_enabled_ = true;
device_emulation_params_ = params;
UpdateDeviceEmulationState();
return Response::OK();
}
Response EmulationHandler::ClearDeviceMetricsOverride() {
if (!device_emulation_enabled_)
return Response::OK();
device_emulation_enabled_ = false;
UpdateDeviceEmulationState();
return Response::OK();
}
WebContentsImpl* EmulationHandler::GetWebContents() {
return host_ ?
static_cast<WebContentsImpl*>(WebContents::FromRenderFrameHost(host_)) :
nullptr;
}
void EmulationHandler::UpdateTouchEventEmulationState() {
RenderWidgetHostImpl* widget_host =
host_ ? host_->GetRenderWidgetHost() : nullptr;
if (!host_)
return;
bool enabled = touch_emulation_enabled_ ||
page_handler_->screencast_enabled();
ui::GestureProviderConfigType config_type =
TouchEmulationConfigurationToType(touch_emulation_configuration_);
widget_host->SetTouchEventEmulationEnabled(enabled, config_type);
if (GetWebContents())
GetWebContents()->SetForceDisableOverscrollContent(enabled);
}
void EmulationHandler::UpdateDeviceEmulationState() {
RenderWidgetHostImpl* widget_host =
host_ ? host_->GetRenderWidgetHost() : nullptr;
if (!host_)
return;
if (device_emulation_enabled_) {
widget_host->Send(new ViewMsg_EnableDeviceEmulation(
widget_host->GetRoutingID(), device_emulation_params_));
} else {
widget_host->Send(new ViewMsg_DisableDeviceEmulation(
widget_host->GetRoutingID()));
}
}
} // namespace emulation
} // namespace devtools
} // namespace content
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