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// Copyright 2013 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/devtools/devtools_embedder_message_dispatcher.h"
#include "base/bind.h"
#include "base/values.h"
namespace {
bool GetValue(const base::Value* value, std::string* result) {
return value->GetAsString(result);
}
bool GetValue(const base::Value* value, int* result) {
return value->GetAsInteger(result);
}
bool GetValue(const base::Value* value, bool* result) {
return value->GetAsBoolean(result);
}
bool GetValue(const base::Value* value, gfx::Rect* rect) {
const base::DictionaryValue* dict;
if (!value->GetAsDictionary(&dict))
return false;
int x = 0;
int y = 0;
int width = 0;
int height = 0;
if (!dict->GetInteger("x", &x) ||
!dict->GetInteger("y", &y) ||
!dict->GetInteger("width", &width) ||
!dict->GetInteger("height", &height))
return false;
rect->SetRect(x, y, width, height);
return true;
}
template <typename T>
struct StorageTraits {
using StorageType = T;
};
template <typename T>
struct StorageTraits<const T&> {
using StorageType = T;
};
template <typename... Ts>
struct ParamTuple {
bool Parse(const base::ListValue& list,
const base::ListValue::const_iterator& it) {
return it == list.end();
}
template <typename H, typename... As>
void Apply(const H& handler, As... args) {
handler.Run(args...);
}
};
template <typename T, typename... Ts>
struct ParamTuple<T, Ts...> {
bool Parse(const base::ListValue& list,
const base::ListValue::const_iterator& it) {
return it != list.end() && GetValue(*it, &head) && tail.Parse(list, it + 1);
}
template <typename H, typename... As>
void Apply(const H& handler, As... args) {
tail.template Apply<H, As..., T>(handler, args..., head);
}
typename StorageTraits<T>::StorageType head;
ParamTuple<Ts...> tail;
};
template<typename... As>
bool ParseAndHandle(const base::Callback<void(int, As...)>& handler,
int request_id,
const base::ListValue& list) {
ParamTuple<As...> tuple;
if (!tuple.Parse(list, list.begin()))
return false;
tuple.Apply(handler, request_id);
return true;
}
} // namespace
/**
* Dispatcher for messages sent from the frontend running in an
* isolated renderer (chrome-devtools:// or chrome://inspect) to the embedder
* in the browser.
*
* The messages are sent via InspectorFrontendHost.sendMessageToEmbedder or
* chrome.send method accordingly.
*/
class DispatcherImpl : public DevToolsEmbedderMessageDispatcher {
public:
~DispatcherImpl() override {}
bool Dispatch(int request_id,
const std::string& method,
const base::ListValue* params) override {
HandlerMap::iterator it = handlers_.find(method);
return it != handlers_.end() && it->second.Run(request_id, *params);
}
template<typename T, typename... As>
void RegisterHandler(const std::string& method,
void (T::*handler)(int, As...), T* delegate) {
handlers_[method] = base::Bind(&ParseAndHandle<As...>,
base::Bind(handler,
base::Unretained(delegate)));
}
private:
using Handler = base::Callback<bool(int, const base::ListValue&)>;
using HandlerMap = std::map<std::string, Handler>;
HandlerMap handlers_;
};
// static
DevToolsEmbedderMessageDispatcher*
DevToolsEmbedderMessageDispatcher::CreateForDevToolsFrontend(
Delegate* delegate) {
DispatcherImpl* d = new DispatcherImpl();
d->RegisterHandler("bringToFront", &Delegate::ActivateWindow, delegate);
d->RegisterHandler("closeWindow", &Delegate::CloseWindow, delegate);
d->RegisterHandler("loadCompleted", &Delegate::LoadCompleted, delegate);
d->RegisterHandler("setInspectedPageBounds",
&Delegate::SetInspectedPageBounds, delegate);
d->RegisterHandler("inspectElementCompleted",
&Delegate::InspectElementCompleted, delegate);
d->RegisterHandler("inspectedURLChanged",
&Delegate::InspectedURLChanged, delegate);
d->RegisterHandler("setIsDocked", &Delegate::SetIsDocked, delegate);
d->RegisterHandler("openInNewTab", &Delegate::OpenInNewTab, delegate);
d->RegisterHandler("save", &Delegate::SaveToFile, delegate);
d->RegisterHandler("append", &Delegate::AppendToFile, delegate);
d->RegisterHandler("requestFileSystems",
&Delegate::RequestFileSystems, delegate);
d->RegisterHandler("addFileSystem", &Delegate::AddFileSystem, delegate);
d->RegisterHandler("removeFileSystem", &Delegate::RemoveFileSystem, delegate);
d->RegisterHandler("upgradeDraggedFileSystemPermissions",
&Delegate::UpgradeDraggedFileSystemPermissions, delegate);
d->RegisterHandler("indexPath", &Delegate::IndexPath, delegate);
d->RegisterHandler("loadNetworkResource",
&Delegate::LoadNetworkResource, delegate);
d->RegisterHandler("stopIndexing", &Delegate::StopIndexing, delegate);
d->RegisterHandler("searchInPath", &Delegate::SearchInPath, delegate);
d->RegisterHandler("setWhitelistedShortcuts",
&Delegate::SetWhitelistedShortcuts, delegate);
d->RegisterHandler("zoomIn", &Delegate::ZoomIn, delegate);
d->RegisterHandler("zoomOut", &Delegate::ZoomOut, delegate);
d->RegisterHandler("resetZoom", &Delegate::ResetZoom, delegate);
d->RegisterHandler("openUrlOnRemoteDeviceAndInspect",
&Delegate::OpenUrlOnRemoteDeviceAndInspect, delegate);
d->RegisterHandler("setDeviceCountUpdatesEnabled",
&Delegate::SetDeviceCountUpdatesEnabled, delegate);
d->RegisterHandler("setDevicesUpdatesEnabled",
&Delegate::SetDevicesUpdatesEnabled, delegate);
d->RegisterHandler("sendMessageToBrowser",
&Delegate::SendMessageToBrowser, delegate);
d->RegisterHandler("recordActionUMA", &Delegate::RecordActionUMA, delegate);
return d;
}
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