372 lines
12 KiB
C++
372 lines
12 KiB
C++
// Copyright 2013 the Chromium Embedded Framework Authors. Portions Copyright
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// 2012 The Chromium Authors. All rights reserved. Use of this source code is
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// governed by a BSD-style license that can be found in the LICENSE file.
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#include "libcef/browser/devtools_frontend.h"
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#include "libcef/browser/content_browser_client.h"
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#include "libcef/browser/devtools_delegate.h"
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#include "libcef/browser/request_context_impl.h"
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#include "libcef/browser/thread_util.h"
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#include "base/command_line.h"
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#include "base/json/json_reader.h"
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#include "base/json/json_writer.h"
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#include "base/strings/string_number_conversions.h"
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#include "base/strings/stringprintf.h"
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#include "base/strings/utf_string_conversions.h"
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#include "base/values.h"
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#include "content/public/browser/browser_thread.h"
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#include "content/public/browser/render_frame_host.h"
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#include "content/public/browser/render_view_host.h"
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#include "content/public/browser/web_contents.h"
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#include "content/public/common/content_client.h"
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#include "ipc/ipc_channel.h"
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#include "net/base/io_buffer.h"
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#include "net/base/net_errors.h"
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#include "net/http/http_response_headers.h"
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#include "net/url_request/url_fetcher.h"
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#include "net/url_request/url_fetcher_response_writer.h"
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namespace {
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// ResponseWriter -------------------------------------------------------------
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class ResponseWriter : public net::URLFetcherResponseWriter {
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public:
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ResponseWriter(base::WeakPtr<CefDevToolsFrontend> devtools_,
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int stream_id);
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~ResponseWriter() override;
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// URLFetcherResponseWriter overrides:
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int Initialize(const net::CompletionCallback& callback) override;
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int Write(net::IOBuffer* buffer,
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int num_bytes,
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const net::CompletionCallback& callback) override;
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int Finish(const net::CompletionCallback& callback) override;
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private:
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base::WeakPtr<CefDevToolsFrontend> devtools_;
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int stream_id_;
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DISALLOW_COPY_AND_ASSIGN(ResponseWriter);
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};
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ResponseWriter::ResponseWriter(
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base::WeakPtr<CefDevToolsFrontend> devtools,
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int stream_id)
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: devtools_(devtools),
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stream_id_(stream_id) {
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}
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ResponseWriter::~ResponseWriter() {
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}
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int ResponseWriter::Initialize(const net::CompletionCallback& callback) {
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return net::OK;
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}
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int ResponseWriter::Write(net::IOBuffer* buffer,
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int num_bytes,
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const net::CompletionCallback& callback) {
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base::FundamentalValue* id = new base::FundamentalValue(stream_id_);
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base::StringValue* chunk =
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new base::StringValue(std::string(buffer->data(), num_bytes));
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content::BrowserThread::PostTask(
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content::BrowserThread::UI, FROM_HERE,
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base::Bind(&CefDevToolsFrontend::CallClientFunction,
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devtools_, "DevToolsAPI.streamWrite",
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base::Owned(id), base::Owned(chunk), nullptr));
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return num_bytes;
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}
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int ResponseWriter::Finish(const net::CompletionCallback& callback) {
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return net::OK;
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}
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// This constant should be in sync with
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// the constant at devtools_ui_bindings.cc.
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const size_t kMaxMessageChunkSize = IPC::Channel::kMaximumMessageSize / 4;
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} // namespace
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// static
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CefDevToolsFrontend* CefDevToolsFrontend::Show(
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CefRefPtr<CefBrowserHostImpl> inspected_browser,
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const CefWindowInfo& windowInfo,
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CefRefPtr<CefClient> client,
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const CefBrowserSettings& settings,
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const CefPoint& inspect_element_at) {
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CefBrowserSettings new_settings = settings;
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if (CefColorGetA(new_settings.background_color) == 0) {
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// Use white as the default background color for DevTools instead of the
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// CefSettings.background_color value.
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new_settings.background_color = SK_ColorWHITE;
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}
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CefRefPtr<CefBrowserHostImpl> frontend_browser =
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CefBrowserHostImpl::Create(windowInfo, client, CefString(),
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new_settings,
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inspected_browser, true,
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inspected_browser->GetRequestContext());
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content::WebContents* inspected_contents = inspected_browser->web_contents();
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if (!inspect_element_at.IsEmpty()) {
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scoped_refptr<content::DevToolsAgentHost> agent_host =
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content::DevToolsAgentHost::GetOrCreateFor(inspected_contents);
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agent_host->InspectElement(inspect_element_at.x, inspect_element_at.y);
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}
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// CefDevToolsFrontend will delete itself when the frontend WebContents is
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// destroyed.
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CefDevToolsFrontend* devtools_frontend = new CefDevToolsFrontend(
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static_cast<CefBrowserHostImpl*>(frontend_browser.get()),
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inspected_contents);
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// Need to load the URL after creating the DevTools objects.
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CefDevToolsDelegate* delegate =
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CefContentBrowserClient::Get()->devtools_delegate();
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frontend_browser->GetMainFrame()->LoadURL(delegate->GetChromeDevToolsURL());
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devtools_frontend->Activate();
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devtools_frontend->Focus();
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return devtools_frontend;
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}
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void CefDevToolsFrontend::Activate() {
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frontend_browser_->ActivateContents(web_contents());
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}
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void CefDevToolsFrontend::Focus() {
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web_contents()->Focus();
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}
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void CefDevToolsFrontend::InspectElementAt(int x, int y) {
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if (agent_host_)
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agent_host_->InspectElement(x, y);
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}
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void CefDevToolsFrontend::Close() {
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CEF_POST_TASK(CEF_UIT,
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base::Bind(&CefBrowserHostImpl::CloseBrowser, frontend_browser_.get(),
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true));
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}
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void CefDevToolsFrontend::DisconnectFromTarget() {
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if (!agent_host_)
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return;
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agent_host_->DetachClient();
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agent_host_ = NULL;
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}
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CefDevToolsFrontend::CefDevToolsFrontend(
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CefRefPtr<CefBrowserHostImpl> frontend_browser,
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content::WebContents* inspected_contents)
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: WebContentsObserver(frontend_browser->web_contents()),
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frontend_browser_(frontend_browser),
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inspected_contents_(inspected_contents),
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weak_factory_(this) {
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}
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CefDevToolsFrontend::~CefDevToolsFrontend() {
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for (const auto& pair : pending_requests_)
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delete pair.first;
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}
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void CefDevToolsFrontend::RenderViewCreated(
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content::RenderViewHost* render_view_host) {
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if (!frontend_host_) {
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frontend_host_.reset(content::DevToolsFrontendHost::Create(
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web_contents()->GetMainFrame(),
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base::Bind(&CefDevToolsFrontend::HandleMessageFromDevToolsFrontend,
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base::Unretained(this))));
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}
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}
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void CefDevToolsFrontend::DocumentAvailableInMainFrame() {
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// Don't call AttachClient multiple times for the same DevToolsAgentHost.
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// Otherwise it will call AgentHostClosed which closes the DevTools window.
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// This may happen in cases where the DevTools content fails to load.
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scoped_refptr<content::DevToolsAgentHost> agent_host =
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content::DevToolsAgentHost::GetOrCreateFor(inspected_contents_);
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if (agent_host != agent_host_) {
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agent_host_ = agent_host;
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agent_host_->AttachClient(this);
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}
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}
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void CefDevToolsFrontend::WebContentsDestroyed() {
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if (agent_host_)
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agent_host_->DetachClient();
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delete this;
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}
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void CefDevToolsFrontend::HandleMessageFromDevToolsFrontend(
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const std::string& message) {
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if (!agent_host_)
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return;
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std::string method;
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base::ListValue* params = NULL;
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base::DictionaryValue* dict = NULL;
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scoped_ptr<base::Value> parsed_message = base::JSONReader::Read(message);
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if (!parsed_message ||
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!parsed_message->GetAsDictionary(&dict) ||
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!dict->GetString("method", &method)) {
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return;
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}
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int request_id = 0;
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dict->GetInteger("id", &request_id);
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dict->GetList("params", ¶ms);
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if (method == "dispatchProtocolMessage" && params && params->GetSize() == 1) {
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std::string protocol_message;
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if (!params->GetString(0, &protocol_message))
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return;
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if (agent_host_)
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agent_host_->DispatchProtocolMessage(protocol_message);
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} else if (method == "loadCompleted") {
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web_contents()->GetMainFrame()->ExecuteJavaScriptForTests(
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base::ASCIIToUTF16("DevToolsAPI.setUseSoftMenu(true);"));
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} else if (method == "loadNetworkResource" && params->GetSize() == 3) {
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// TODO(pfeldman): handle some of the embedder messages in content.
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std::string url;
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std::string headers;
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int stream_id;
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if (!params->GetString(0, &url) ||
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!params->GetString(1, &headers) ||
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!params->GetInteger(2, &stream_id)) {
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return;
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}
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GURL gurl(url);
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if (!gurl.is_valid()) {
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base::DictionaryValue response;
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response.SetInteger("statusCode", 404);
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SendMessageAck(request_id, &response);
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return;
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}
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net::URLFetcher* fetcher =
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net::URLFetcher::Create(gurl, net::URLFetcher::GET, this).release();
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pending_requests_[fetcher] = request_id;
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fetcher->SetRequestContext(web_contents()->GetBrowserContext()->
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GetRequestContext());
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fetcher->SetExtraRequestHeaders(headers);
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fetcher->SaveResponseWithWriter(scoped_ptr<net::URLFetcherResponseWriter>(
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new ResponseWriter(weak_factory_.GetWeakPtr(), stream_id)));
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fetcher->Start();
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return;
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} else if (method == "getPreferences") {
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SendMessageAck(request_id, &preferences_);
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return;
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} else if (method == "setPreference") {
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std::string name;
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std::string value;
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if (!params->GetString(0, &name) ||
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!params->GetString(1, &value)) {
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return;
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}
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preferences_.SetStringWithoutPathExpansion(name, value);
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} else if (method == "removePreference") {
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std::string name;
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if (!params->GetString(0, &name))
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return;
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preferences_.RemoveWithoutPathExpansion(name, nullptr);
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} else if (method == "requestFileSystems") {
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web_contents()->GetMainFrame()->ExecuteJavaScriptForTests(
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base::ASCIIToUTF16("DevToolsAPI.fileSystemsLoaded([]);"));
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} else {
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return;
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}
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if (request_id)
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SendMessageAck(request_id, nullptr);
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}
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void CefDevToolsFrontend::DispatchProtocolMessage(
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content::DevToolsAgentHost* agent_host,
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const std::string& message) {
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if (message.length() < kMaxMessageChunkSize) {
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base::string16 javascript = base::UTF8ToUTF16(
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"DevToolsAPI.dispatchMessage(" + message + ");");
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web_contents()->GetMainFrame()->ExecuteJavaScriptForTests(javascript);
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return;
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}
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base::FundamentalValue total_size(static_cast<int>(message.length()));
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for (size_t pos = 0; pos < message.length(); pos += kMaxMessageChunkSize) {
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std::string param;
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base::JSONWriter::Write(
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base::StringValue(message.substr(pos, kMaxMessageChunkSize)), ¶m);
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std::string code = "DevToolsAPI.dispatchMessageChunk(" + param + ");";
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base::string16 javascript = base::UTF8ToUTF16(code);
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web_contents()->GetMainFrame()->ExecuteJavaScriptForTests(javascript);
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}
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}
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void CefDevToolsFrontend::OnURLFetchComplete(const net::URLFetcher* source) {
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// TODO(pfeldman): this is a copy of chrome's devtools_ui_bindings.cc.
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// We should handle some of the commands including this one in content.
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DCHECK(source);
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PendingRequestsMap::iterator it = pending_requests_.find(source);
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DCHECK(it != pending_requests_.end());
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base::DictionaryValue response;
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base::DictionaryValue* headers = new base::DictionaryValue();
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net::HttpResponseHeaders* rh = source->GetResponseHeaders();
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response.SetInteger("statusCode", rh ? rh->response_code() : 200);
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response.Set("headers", headers);
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void* iterator = NULL;
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std::string name;
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std::string value;
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while (rh && rh->EnumerateHeaderLines(&iterator, &name, &value))
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headers->SetString(name, value);
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SendMessageAck(it->second, &response);
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pending_requests_.erase(it);
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delete source;
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}
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void CefDevToolsFrontend::CallClientFunction(
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const std::string& function_name,
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const base::Value* arg1,
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const base::Value* arg2,
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const base::Value* arg3) {
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std::string javascript = function_name + "(";
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if (arg1) {
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std::string json;
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base::JSONWriter::Write(*arg1, &json);
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javascript.append(json);
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if (arg2) {
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base::JSONWriter::Write(*arg2, &json);
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javascript.append(", ").append(json);
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if (arg3) {
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base::JSONWriter::Write(*arg3, &json);
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javascript.append(", ").append(json);
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}
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}
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}
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javascript.append(");");
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web_contents()->GetMainFrame()->ExecuteJavaScriptForTests(
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base::UTF8ToUTF16(javascript));
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}
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void CefDevToolsFrontend::SendMessageAck(int request_id,
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const base::Value* arg) {
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base::FundamentalValue id_value(request_id);
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CallClientFunction("DevToolsAPI.embedderMessageAck",
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&id_value, arg, nullptr);
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}
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void CefDevToolsFrontend::AgentHostClosed(
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content::DevToolsAgentHost* agent_host,
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bool replaced) {
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DCHECK(agent_host == agent_host_.get());
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Close();
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}
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