cef/libcef/renderer/browser_impl.cc
2017-01-24 16:53:09 -05:00

730 lines
23 KiB
C++

// Copyright (c) 2012 The Chromium Embedded Framework Authors.
// Portions copyright (c) 2011 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 "libcef/renderer/browser_impl.h"
#include <string>
#include <vector>
#include "libcef/common/cef_messages.h"
#include "libcef/common/content_client.h"
#include "libcef/common/process_message_impl.h"
#include "libcef/common/request_impl.h"
#include "libcef/common/response_manager.h"
#include "libcef/renderer/content_renderer_client.h"
#include "libcef/renderer/dom_document_impl.h"
#include "libcef/renderer/thread_util.h"
#include "libcef/renderer/webkit_glue.h"
#include "base/strings/string16.h"
#include "base/strings/string_util.h"
#include "base/strings/utf_string_conversions.h"
#include "content/public/renderer/document_state.h"
#include "content/public/renderer/navigation_state.h"
#include "content/public/renderer/render_view.h"
#include "content/renderer/navigation_state_impl.h"
#include "content/renderer/render_view_impl.h"
#include "third_party/WebKit/public/platform/WebString.h"
#include "third_party/WebKit/public/platform/WebURL.h"
#include "third_party/WebKit/public/platform/WebURLError.h"
#include "third_party/WebKit/public/platform/WebURLResponse.h"
#include "third_party/WebKit/public/web/WebDataSource.h"
#include "third_party/WebKit/public/web/WebDocument.h"
#include "third_party/WebKit/public/web/WebFrame.h"
#include "third_party/WebKit/public/web/WebFrameContentDumper.h"
#include "third_party/WebKit/public/web/WebLocalFrame.h"
#include "third_party/WebKit/public/web/WebNode.h"
#include "third_party/WebKit/public/web/WebScriptSource.h"
#include "third_party/WebKit/public/web/WebSecurityPolicy.h"
#include "third_party/WebKit/public/web/WebView.h"
using blink::WebFrame;
using blink::WebScriptSource;
using blink::WebString;
using blink::WebURL;
using blink::WebView;
// CefBrowserImpl static methods.
// -----------------------------------------------------------------------------
// static
CefRefPtr<CefBrowserImpl> CefBrowserImpl::GetBrowserForView(
content::RenderView* view) {
return CefContentRendererClient::Get()->GetBrowserForView(view);
}
// static
CefRefPtr<CefBrowserImpl> CefBrowserImpl::GetBrowserForMainFrame(
blink::WebFrame* frame) {
return CefContentRendererClient::Get()->GetBrowserForMainFrame(frame);
}
// CefBrowser methods.
// -----------------------------------------------------------------------------
CefRefPtr<CefBrowserHost> CefBrowserImpl::GetHost() {
NOTREACHED() << "GetHost cannot be called from the render process";
return nullptr;
}
bool CefBrowserImpl::CanGoBack() {
CEF_REQUIRE_RT_RETURN(false);
return webkit_glue::CanGoBack(render_view()->GetWebView());
}
void CefBrowserImpl::GoBack() {
CEF_REQUIRE_RT_RETURN_VOID();
webkit_glue::GoBack(render_view()->GetWebView());
}
bool CefBrowserImpl::CanGoForward() {
CEF_REQUIRE_RT_RETURN(false);
return webkit_glue::CanGoForward(render_view()->GetWebView());
}
void CefBrowserImpl::GoForward() {
CEF_REQUIRE_RT_RETURN_VOID();
webkit_glue::GoForward(render_view()->GetWebView());
}
bool CefBrowserImpl::IsLoading() {
CEF_REQUIRE_RT_RETURN(false);
if (render_view()->GetWebView()) {
blink::WebFrame* main_frame = render_view()->GetWebView()->mainFrame();
if (main_frame)
return main_frame->toWebLocalFrame()->isLoading();
}
return false;
}
void CefBrowserImpl::Reload() {
CEF_REQUIRE_RT_RETURN_VOID();
if (render_view()->GetWebView() && render_view()->GetWebView()->mainFrame()) {
render_view()->GetWebView()->mainFrame()->reload(
blink::WebFrameLoadType::Reload);
}
}
void CefBrowserImpl::ReloadIgnoreCache() {
CEF_REQUIRE_RT_RETURN_VOID();
if (render_view()->GetWebView() && render_view()->GetWebView()->mainFrame()) {
render_view()->GetWebView()->mainFrame()->reload(
blink::WebFrameLoadType::ReloadBypassingCache);
}
}
void CefBrowserImpl::StopLoad() {
CEF_REQUIRE_RT_RETURN_VOID();
if (render_view()->GetWebView() && render_view()->GetWebView()->mainFrame())
render_view()->GetWebView()->mainFrame()->stopLoading();
}
int CefBrowserImpl::GetIdentifier() {
CEF_REQUIRE_RT_RETURN(0);
return browser_id();
}
bool CefBrowserImpl::IsSame(CefRefPtr<CefBrowser> that) {
CEF_REQUIRE_RT_RETURN(false);
CefBrowserImpl* impl = static_cast<CefBrowserImpl*>(that.get());
return (impl == this);
}
bool CefBrowserImpl::IsPopup() {
CEF_REQUIRE_RT_RETURN(false);
return is_popup();
}
bool CefBrowserImpl::HasDocument() {
CEF_REQUIRE_RT_RETURN(false);
if (render_view()->GetWebView() && render_view()->GetWebView()->mainFrame())
return !render_view()->GetWebView()->mainFrame()->document().isNull();
return false;
}
CefRefPtr<CefFrame> CefBrowserImpl::GetMainFrame() {
CEF_REQUIRE_RT_RETURN(nullptr);
if (render_view()->GetWebView() && render_view()->GetWebView()->mainFrame())
return GetWebFrameImpl(render_view()->GetWebView()->mainFrame()).get();
return nullptr;
}
CefRefPtr<CefFrame> CefBrowserImpl::GetFocusedFrame() {
CEF_REQUIRE_RT_RETURN(nullptr);
if (render_view()->GetWebView() &&
render_view()->GetWebView()->focusedFrame()) {
return GetWebFrameImpl(render_view()->GetWebView()->focusedFrame()).get();
}
return nullptr;
}
CefRefPtr<CefFrame> CefBrowserImpl::GetFrame(int64 identifier) {
CEF_REQUIRE_RT_RETURN(nullptr);
return GetWebFrameImpl(identifier).get();
}
CefRefPtr<CefFrame> CefBrowserImpl::GetFrame(const CefString& name) {
CEF_REQUIRE_RT_RETURN(nullptr);
blink::WebView* web_view = render_view()->GetWebView();
if (web_view) {
const blink::WebString& frame_name = name.ToString16();
// Search by assigned frame name (Frame::name).
WebFrame* frame = web_view->findFrameByName(frame_name,
web_view->mainFrame());
if (!frame) {
// Search by unique frame name (Frame::uniqueName).
frame = webkit_glue::FindFrameByUniqueName(frame_name,
web_view->mainFrame());
}
if (frame)
return GetWebFrameImpl(frame).get();
}
return nullptr;
}
size_t CefBrowserImpl::GetFrameCount() {
CEF_REQUIRE_RT_RETURN(0);
int count = 0;
if (render_view()->GetWebView()) {
for (WebFrame* frame = render_view()->GetWebView()->mainFrame(); frame;
frame = frame->traverseNext()) {
count++;
}
}
return count;
}
void CefBrowserImpl::GetFrameIdentifiers(std::vector<int64>& identifiers) {
CEF_REQUIRE_RT_RETURN_VOID();
if (identifiers.size() > 0)
identifiers.clear();
if (render_view()->GetWebView()) {
for (WebFrame* frame = render_view()->GetWebView()->mainFrame(); frame;
frame = frame->traverseNext()) {
identifiers.push_back(webkit_glue::GetIdentifier(frame));
}
}
}
void CefBrowserImpl::GetFrameNames(std::vector<CefString>& names) {
CEF_REQUIRE_RT_RETURN_VOID();
if (names.size() > 0)
names.clear();
if (render_view()->GetWebView()) {
for (WebFrame* frame = render_view()->GetWebView()->mainFrame(); frame;
frame = frame->traverseNext()) {
names.push_back(CefString(frame->uniqueName().utf8()));
}
}
}
bool CefBrowserImpl::SendProcessMessage(CefProcessId target_process,
CefRefPtr<CefProcessMessage> message) {
Cef_Request_Params params;
CefProcessMessageImpl* impl =
static_cast<CefProcessMessageImpl*>(message.get());
if (impl->CopyTo(params)) {
return SendProcessMessage(target_process, params.name, &params.arguments,
true);
}
return false;
}
// CefBrowserImpl public methods.
// -----------------------------------------------------------------------------
CefBrowserImpl::CefBrowserImpl(content::RenderView* render_view,
int browser_id,
bool is_popup,
bool is_windowless)
: content::RenderViewObserver(render_view),
browser_id_(browser_id),
is_popup_(is_popup),
is_windowless_(is_windowless) {
response_manager_.reset(new CefResponseManager);
}
CefBrowserImpl::~CefBrowserImpl() {
}
void CefBrowserImpl::LoadRequest(const CefMsg_LoadRequest_Params& params) {
CefRefPtr<CefFrameImpl> framePtr = GetWebFrameImpl(params.frame_id);
if (!framePtr.get())
return;
WebFrame* web_frame = framePtr->web_frame();
blink::WebURLRequest request;
CefRequestImpl::Get(params, request);
web_frame->loadRequest(request);
}
bool CefBrowserImpl::SendProcessMessage(CefProcessId target_process,
const std::string& name,
base::ListValue* arguments,
bool user_initiated) {
DCHECK_EQ(PID_BROWSER, target_process);
DCHECK(!name.empty());
Cef_Request_Params params;
params.name = name;
if (arguments)
params.arguments.Swap(arguments);
params.frame_id = -1;
params.user_initiated = user_initiated;
params.request_id = -1;
params.expect_response = false;
return Send(new CefHostMsg_Request(routing_id(), params));
}
CefRefPtr<CefFrameImpl> CefBrowserImpl::GetWebFrameImpl(
blink::WebFrame* frame) {
DCHECK(frame);
int64_t frame_id = webkit_glue::GetIdentifier(frame);
// Frames are re-used between page loads. Only add the frame to the map once.
FrameMap::const_iterator it = frames_.find(frame_id);
if (it != frames_.end())
return it->second;
CefRefPtr<CefFrameImpl> framePtr(new CefFrameImpl(this, frame));
frames_.insert(std::make_pair(frame_id, framePtr));
int64_t parent_id = frame->parent() == NULL ?
webkit_glue::kInvalidFrameId :
webkit_glue::GetIdentifier(frame->parent());
base::string16 name = frame->uniqueName();
// Notify the browser that the frame has been identified.
Send(new CefHostMsg_FrameIdentified(routing_id(), frame_id, parent_id, name));
return framePtr;
}
CefRefPtr<CefFrameImpl> CefBrowserImpl::GetWebFrameImpl(int64_t frame_id) {
if (frame_id == webkit_glue::kInvalidFrameId) {
if (render_view()->GetWebView() && render_view()->GetWebView()->mainFrame())
return GetWebFrameImpl(render_view()->GetWebView()->mainFrame());
return nullptr;
}
// Check if we already know about the frame.
FrameMap::const_iterator it = frames_.find(frame_id);
if (it != frames_.end())
return it->second;
if (render_view()->GetWebView()) {
// Check if the frame exists but we don't know about it yet.
for (WebFrame* frame = render_view()->GetWebView()->mainFrame(); frame;
frame = frame->traverseNext()) {
if (webkit_glue::GetIdentifier(frame) == frame_id)
return GetWebFrameImpl(frame);
}
}
return nullptr;
}
void CefBrowserImpl::AddFrameObject(int64_t frame_id,
CefTrackNode* tracked_object) {
CefRefPtr<CefTrackManager> manager;
if (!frame_objects_.empty()) {
FrameObjectMap::const_iterator it = frame_objects_.find(frame_id);
if (it != frame_objects_.end())
manager = it->second;
}
if (!manager.get()) {
manager = new CefTrackManager();
frame_objects_.insert(std::make_pair(frame_id, manager));
}
manager->Add(tracked_object);
}
bool CefBrowserImpl::is_swapped_out() const {
content::RenderViewImpl* render_view_impl =
static_cast<content::RenderViewImpl*>(render_view());
return (!render_view_impl || render_view_impl->is_swapped_out());
}
// RenderViewObserver methods.
// -----------------------------------------------------------------------------
void CefBrowserImpl::OnDestruct() {
// Notify that the browser window has been destroyed.
CefRefPtr<CefApp> app = CefContentClient::Get()->application();
if (app.get()) {
CefRefPtr<CefRenderProcessHandler> handler =
app->GetRenderProcessHandler();
if (handler.get())
handler->OnBrowserDestroyed(this);
}
response_manager_.reset();
CefContentRendererClient::Get()->OnBrowserDestroyed(this);
}
void CefBrowserImpl::DidStartLoading() {
OnLoadingStateChange(true);
}
void CefBrowserImpl::DidStopLoading() {
OnLoadingStateChange(false);
}
void CefBrowserImpl::DidFailLoad(
blink::WebLocalFrame* frame,
const blink::WebURLError& error) {
OnLoadError(frame, error);
OnLoadEnd(frame);
}
void CefBrowserImpl::DidFinishLoad(blink::WebLocalFrame* frame) {
blink::WebDataSource* ds = frame->dataSource();
Send(new CefHostMsg_DidFinishLoad(routing_id(),
webkit_glue::GetIdentifier(frame),
ds->getRequest().url(),
!frame->parent(),
ds->response().httpStatusCode()));
OnLoadEnd(frame);
}
void CefBrowserImpl::DidStartProvisionalLoad(blink::WebLocalFrame* frame) {
// Send the frame creation notification if necessary.
GetWebFrameImpl(frame);
}
void CefBrowserImpl::DidFailProvisionalLoad(
blink::WebLocalFrame* frame,
const blink::WebURLError& error) {
OnLoadError(frame, error);
}
void CefBrowserImpl::DidCommitProvisionalLoad(blink::WebLocalFrame* frame,
bool is_new_navigation) {
OnLoadStart(frame);
}
void CefBrowserImpl::FrameDetached(WebFrame* frame) {
int64_t frame_id = webkit_glue::GetIdentifier(frame);
if (!frames_.empty()) {
// Remove the frame from the map.
FrameMap::iterator it = frames_.find(frame_id);
if (it != frames_.end()) {
it->second->Detach();
frames_.erase(it);
}
}
if (!frame_objects_.empty()) {
// Remove any tracked objects associated with the frame.
FrameObjectMap::iterator it = frame_objects_.find(frame_id);
if (it != frame_objects_.end())
frame_objects_.erase(it);
}
}
void CefBrowserImpl::FocusedNodeChanged(const blink::WebNode& node) {
// Notify the handler.
CefRefPtr<CefApp> app = CefContentClient::Get()->application();
if (app.get()) {
CefRefPtr<CefRenderProcessHandler> handler =
app->GetRenderProcessHandler();
if (handler.get()) {
if (node.isNull()) {
handler->OnFocusedNodeChanged(this, GetFocusedFrame(), NULL);
} else {
const blink::WebDocument& document = node.document();
if (!document.isNull()) {
blink::WebFrame* frame = document.frame();
CefRefPtr<CefDOMDocumentImpl> documentImpl =
new CefDOMDocumentImpl(this, frame);
handler->OnFocusedNodeChanged(this,
GetWebFrameImpl(frame).get(),
documentImpl->GetOrCreateNode(node));
documentImpl->Detach();
}
}
}
}
}
// Based on ExtensionHelper::DraggableRegionsChanged.
void CefBrowserImpl::DraggableRegionsChanged(blink::WebFrame* frame) {
blink::WebVector<blink::WebDraggableRegion> webregions =
frame->document().draggableRegions();
std::vector<Cef_DraggableRegion_Params> regions;
for (size_t i = 0; i < webregions.size(); ++i) {
Cef_DraggableRegion_Params region;
render_view()->ConvertViewportToWindowViaWidget(&webregions[i].bounds);
region.bounds = webregions[i].bounds;
region.draggable = webregions[i].draggable;
regions.push_back(region);
}
Send(new CefHostMsg_UpdateDraggableRegions(routing_id(), regions));
}
bool CefBrowserImpl::OnMessageReceived(const IPC::Message& message) {
bool handled = true;
IPC_BEGIN_MESSAGE_MAP(CefBrowserImpl, message)
IPC_MESSAGE_HANDLER(CefMsg_Request, OnRequest)
IPC_MESSAGE_HANDLER(CefMsg_Response, OnResponse)
IPC_MESSAGE_HANDLER(CefMsg_ResponseAck, OnResponseAck)
IPC_MESSAGE_HANDLER(CefMsg_LoadRequest, LoadRequest)
IPC_MESSAGE_UNHANDLED(handled = false)
IPC_END_MESSAGE_MAP()
return handled;
}
// RenderViewObserver::OnMessageReceived message handlers.
// -----------------------------------------------------------------------------
void CefBrowserImpl::OnRequest(const Cef_Request_Params& params) {
bool success = false;
std::string response;
bool expect_response_ack = false;
TRACE_EVENT2("libcef", "CefBrowserImpl::OnRequest",
"request_id", params.request_id,
"expect_response", params.expect_response ? 1 : 0);
if (params.user_initiated) {
// Give the user a chance to handle the request.
CefRefPtr<CefApp> app = CefContentClient::Get()->application();
if (app.get()) {
CefRefPtr<CefRenderProcessHandler> handler =
app->GetRenderProcessHandler();
if (handler.get()) {
CefRefPtr<CefProcessMessageImpl> message(
new CefProcessMessageImpl(const_cast<Cef_Request_Params*>(&params),
false, true));
success = handler->OnProcessMessageReceived(this, PID_BROWSER,
message.get());
message->Detach(nullptr);
}
}
} else if (params.name == "execute-code") {
// Execute code.
CefRefPtr<CefFrameImpl> framePtr = GetWebFrameImpl(params.frame_id);
if (framePtr.get()) {
WebFrame* web_frame = framePtr->web_frame();
if (web_frame) {
DCHECK_EQ(params.arguments.GetSize(), (size_t)4);
bool is_javascript = false;
std::string code, script_url;
int script_start_line = 0;
params.arguments.GetBoolean(0, &is_javascript);
params.arguments.GetString(1, &code);
DCHECK(!code.empty());
params.arguments.GetString(2, &script_url);
params.arguments.GetInteger(3, &script_start_line);
DCHECK_GE(script_start_line, 0);
if (is_javascript) {
web_frame->executeScript(
WebScriptSource(base::UTF8ToUTF16(code),
GURL(script_url),
script_start_line));
success = true;
} else {
// TODO(cef): implement support for CSS code.
NOTIMPLEMENTED();
}
}
}
} else if (params.name == "execute-command") {
// Execute command.
CefRefPtr<CefFrameImpl> framePtr = GetWebFrameImpl(params.frame_id);
if (framePtr.get()) {
WebFrame* web_frame = framePtr->web_frame();
if (web_frame) {
DCHECK_EQ(params.arguments.GetSize(), (size_t)1);
std::string command;
params.arguments.GetString(0, &command);
DCHECK(!command.empty());
if (base::LowerCaseEqualsASCII(command, "getsource")) {
if (web_frame->isWebLocalFrame()) {
response = blink::WebFrameContentDumper::dumpAsMarkup(
web_frame->toWebLocalFrame()).utf8();
success = true;
}
} else if (base::LowerCaseEqualsASCII(command, "gettext")) {
response = webkit_glue::DumpDocumentText(web_frame);
success = true;
} else if (web_frame->isWebLocalFrame() &&
web_frame->toWebLocalFrame()->executeCommand(
base::UTF8ToUTF16(command))) {
success = true;
}
}
}
} else if (params.name == "load-string") {
// Load a string.
CefRefPtr<CefFrameImpl> framePtr = GetWebFrameImpl(params.frame_id);
if (framePtr.get()) {
WebFrame* web_frame = framePtr->web_frame();
if (web_frame) {
DCHECK_EQ(params.arguments.GetSize(), (size_t)2);
std::string string, url;
params.arguments.GetString(0, &string);
params.arguments.GetString(1, &url);
web_frame->loadHTMLString(string, GURL(url));
}
}
} else {
// Invalid request.
NOTREACHED();
}
if (params.expect_response) {
DCHECK_GE(params.request_id, 0);
// Send a response to the browser.
Cef_Response_Params response_params;
response_params.request_id = params.request_id;
response_params.success = success;
response_params.response = response;
response_params.expect_response_ack = expect_response_ack;
Send(new CefHostMsg_Response(routing_id(), response_params));
}
}
void CefBrowserImpl::OnResponse(const Cef_Response_Params& params) {
response_manager_->RunHandler(params);
if (params.expect_response_ack)
Send(new CefHostMsg_ResponseAck(routing_id(), params.request_id));
}
void CefBrowserImpl::OnResponseAck(int request_id) {
response_manager_->RunAckHandler(request_id);
}
void CefBrowserImpl::OnLoadingStateChange(bool isLoading) {
if (is_swapped_out())
return;
CefRefPtr<CefApp> app = CefContentClient::Get()->application();
if (app.get()) {
CefRefPtr<CefRenderProcessHandler> handler =
app->GetRenderProcessHandler();
if (handler.get()) {
CefRefPtr<CefLoadHandler> load_handler = handler->GetLoadHandler();
if (load_handler.get()) {
WebView* web_view = render_view()->GetWebView();
const bool canGoBack = webkit_glue::CanGoBack(web_view);
const bool canGoForward = webkit_glue::CanGoForward(web_view);
load_handler->OnLoadingStateChange(this, isLoading, canGoBack,
canGoForward);
}
}
}
}
void CefBrowserImpl::OnLoadStart(blink::WebLocalFrame* frame) {
if (is_swapped_out())
return;
CefRefPtr<CefApp> app = CefContentClient::Get()->application();
if (app.get()) {
CefRefPtr<CefRenderProcessHandler> handler =
app->GetRenderProcessHandler();
if (handler.get()) {
CefRefPtr<CefLoadHandler> load_handler = handler->GetLoadHandler();
if (load_handler.get()) {
CefRefPtr<CefFrameImpl> cef_frame = GetWebFrameImpl(frame);
load_handler->OnLoadStart(this, cef_frame.get(), TT_EXPLICIT);
}
}
}
}
void CefBrowserImpl::OnLoadEnd(blink::WebLocalFrame* frame) {
if (is_swapped_out())
return;
CefRefPtr<CefApp> app = CefContentClient::Get()->application();
if (app.get()) {
CefRefPtr<CefRenderProcessHandler> handler =
app->GetRenderProcessHandler();
if (handler.get()) {
CefRefPtr<CefLoadHandler> load_handler = handler->GetLoadHandler();
if (load_handler.get()) {
CefRefPtr<CefFrameImpl> cef_frame = GetWebFrameImpl(frame);
int httpStatusCode = frame->dataSource()->response().httpStatusCode();
load_handler->OnLoadEnd(this, cef_frame.get(), httpStatusCode);
}
}
}
}
void CefBrowserImpl::OnLoadError(blink::WebLocalFrame* frame,
const blink::WebURLError& error) {
if (is_swapped_out())
return;
CefRefPtr<CefApp> app = CefContentClient::Get()->application();
if (app.get()) {
CefRefPtr<CefRenderProcessHandler> handler =
app->GetRenderProcessHandler();
if (handler.get()) {
CefRefPtr<CefLoadHandler> load_handler = handler->GetLoadHandler();
if (load_handler.get()) {
CefRefPtr<CefFrameImpl> cef_frame = GetWebFrameImpl(frame);
const cef_errorcode_t errorCode =
static_cast<cef_errorcode_t>(error.reason);
const std::string& errorText = error.localizedDescription.utf8();
const GURL& failedUrl = error.unreachableURL;
load_handler->OnLoadError(this, cef_frame.get(), errorCode, errorText,
failedUrl.spec());
}
}
}
}