cef/libcef/renderer/blink_glue.cc

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// 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/blink_glue.h"
#include "third_party/blink/public/platform/web_string.h"
#include "third_party/blink/public/platform/web_url_response.h"
#include "third_party/blink/public/web/web_document.h"
#include "third_party/blink/public/web/web_element.h"
#include "third_party/blink/public/web/web_local_frame_client.h"
#include "third_party/blink/public/web/web_node.h"
#include "third_party/blink/public/web/web_view_client.h"
#include "third_party/blink/renderer/bindings/core/v8/referrer_script_info.h"
#include "third_party/blink/renderer/bindings/core/v8/script_controller.h"
#include "third_party/blink/renderer/bindings/core/v8/script_source_code.h"
#include "third_party/blink/renderer/bindings/core/v8/v8_binding_for_core.h"
#include "third_party/blink/renderer/bindings/core/v8/v8_code_cache.h"
#include "third_party/blink/renderer/core/dom/document.h"
#include "third_party/blink/renderer/core/dom/element.h"
#include "third_party/blink/renderer/core/dom/node.h"
#include "third_party/blink/renderer/core/editing/serializers/serialization.h"
#include "third_party/blink/renderer/core/exported/web_view_impl.h"
#include "third_party/blink/renderer/core/frame/local_frame.h"
#include "third_party/blink/renderer/core/frame/settings.h"
#include "third_party/blink/renderer/core/frame/web_local_frame_impl.h"
#include "third_party/blink/renderer/platform/bindings/script_forbidden_scope.h"
#include "third_party/blink/renderer/platform/bindings/v8_binding.h"
#include "third_party/blink/renderer/platform/loader/fetch/resource_response.h"
#include "third_party/blink/renderer/platform/weborigin/scheme_registry.h"
#undef LOG
#include "base/logging.h"
namespace blink_glue {
const int64_t kInvalidFrameId = -1;
bool CanGoBack(blink::WebView* view) {
if (!view)
return false;
blink::WebViewImpl* impl = reinterpret_cast<blink::WebViewImpl*>(view);
return (impl->Client()->HistoryBackListCount() > 0);
}
bool CanGoForward(blink::WebView* view) {
if (!view)
return false;
blink::WebViewImpl* impl = reinterpret_cast<blink::WebViewImpl*>(view);
return (impl->Client()->HistoryForwardListCount() > 0);
}
void GoBack(blink::WebView* view) {
if (!view)
return;
blink::WebFrame* main_frame = view->MainFrame();
if (main_frame && main_frame->IsWebLocalFrame()) {
blink::WebViewImpl* view_impl = reinterpret_cast<blink::WebViewImpl*>(view);
if (view_impl->Client()->HistoryBackListCount() > 0) {
main_frame->ToWebLocalFrame()->Client()->NavigateBackForwardSoon(
-1, true /* has_user_gesture */);
}
}
}
void GoForward(blink::WebView* view) {
if (!view)
return;
blink::WebFrame* main_frame = view->MainFrame();
if (main_frame && main_frame->IsWebLocalFrame()) {
blink::WebViewImpl* view_impl = reinterpret_cast<blink::WebViewImpl*>(view);
if (view_impl->Client()->HistoryForwardListCount() > 0) {
main_frame->ToWebLocalFrame()->Client()->NavigateBackForwardSoon(
1, true /* has_user_gesture */);
}
}
}
std::string DumpDocumentText(blink::WebLocalFrame* frame) {
// We use the document element's text instead of the body text here because
// not all documents have a body, such as XML documents.
blink::WebElement document_element = frame->GetDocument().DocumentElement();
if (document_element.IsNull())
return std::string();
blink::Element* web_element = document_element.Unwrap<blink::Element>();
return blink::WebString(web_element->innerText()).Utf8();
}
cef_dom_node_type_t GetNodeType(const blink::WebNode& node) {
const blink::Node* web_node = node.ConstUnwrap<blink::Node>();
switch (web_node->getNodeType()) {
case blink::Node::kElementNode:
return DOM_NODE_TYPE_ELEMENT;
case blink::Node::kAttributeNode:
return DOM_NODE_TYPE_ATTRIBUTE;
case blink::Node::kTextNode:
return DOM_NODE_TYPE_TEXT;
case blink::Node::kCdataSectionNode:
return DOM_NODE_TYPE_CDATA_SECTION;
case blink::Node::kProcessingInstructionNode:
return DOM_NODE_TYPE_PROCESSING_INSTRUCTIONS;
case blink::Node::kCommentNode:
return DOM_NODE_TYPE_COMMENT;
case blink::Node::kDocumentNode:
return DOM_NODE_TYPE_DOCUMENT;
case blink::Node::kDocumentTypeNode:
return DOM_NODE_TYPE_DOCUMENT_TYPE;
case blink::Node::kDocumentFragmentNode:
return DOM_NODE_TYPE_DOCUMENT_FRAGMENT;
}
return DOM_NODE_TYPE_UNSUPPORTED;
}
blink::WebString GetNodeName(const blink::WebNode& node) {
const blink::Node* web_node = node.ConstUnwrap<blink::Node>();
return web_node->nodeName();
}
blink::WebString CreateNodeMarkup(const blink::WebNode& node) {
const blink::Node* web_node = node.ConstUnwrap<blink::Node>();
return blink::CreateMarkup(web_node);
}
bool SetNodeValue(blink::WebNode& node, const blink::WebString& value) {
blink::Node* web_node = node.Unwrap<blink::Node>();
web_node->setNodeValue(value);
return true;
}
v8::MaybeLocal<v8::Value> CallV8Function(v8::Local<v8::Context> context,
v8::Local<v8::Function> function,
v8::Local<v8::Object> receiver,
int argc,
v8::Local<v8::Value> args[],
v8::Isolate* isolate) {
v8::MaybeLocal<v8::Value> func_rv;
// Execute the function call using the V8ScriptRunner so that inspector
// instrumentation works.
blink::LocalFrame* frame = blink::ToLocalFrameIfNotDetached(context);
DCHECK(frame);
if (frame &&
frame->GetDocument()->CanExecuteScripts(blink::kAboutToExecuteScript)) {
func_rv = blink::V8ScriptRunner::CallFunction(
function, frame->GetDocument(), receiver, argc, args, isolate);
}
return func_rv;
}
bool IsTextControlElement(const blink::WebElement& element) {
const blink::Element* web_element = element.ConstUnwrap<blink::Element>();
return web_element->IsTextControl();
}
v8::MaybeLocal<v8::Value> ExecuteV8ScriptAndReturnValue(
const blink::WebString& source,
const blink::WebString& source_url,
int start_line,
v8::Local<v8::Context> context,
v8::Isolate* isolate,
v8::TryCatch& tryCatch,
blink::SanitizeScriptErrors sanitizeScriptErrors) {
// Based on ScriptController::executeScriptAndReturnValue
DCHECK(isolate);
if (start_line < 1)
start_line = 1;
const blink::ScriptSourceCode ssc = blink::ScriptSourceCode(
source, blink::ScriptSourceLocationType::kInternal,
nullptr, /* cache_handler */
blink::KURL(source_url),
WTF::TextPosition(WTF::OrdinalNumber::FromOneBasedInt(start_line),
WTF::OrdinalNumber::FromZeroBasedInt(0)));
v8::MaybeLocal<v8::Value> result;
blink::LocalFrame* frame = blink::ToLocalFrameIfNotDetached(context);
if (!frame)
return result;
blink::V8CacheOptions v8CacheOptions(blink::kV8CacheOptionsDefault);
if (frame && frame->GetSettings())
v8CacheOptions = frame->GetSettings()->GetV8CacheOptions();
// Based on V8ScriptRunner::CompileAndRunInternalScript:
v8::ScriptCompiler::CompileOptions compile_options;
blink::V8CodeCache::ProduceCacheOptions produce_cache_options;
v8::ScriptCompiler::NoCacheReason no_cache_reason;
std::tie(compile_options, produce_cache_options, no_cache_reason) =
blink::V8CodeCache::GetCompileOptions(v8CacheOptions, ssc);
// Currently internal scripts don't have cache handlers, so we should not
// produce cache for them.
DCHECK_EQ(produce_cache_options,
blink::V8CodeCache::ProduceCacheOptions::kNoProduceCache);
v8::Local<v8::Script> script;
// Use default ReferrerScriptInfo here:
// - nonce: empty for internal script, and
// - parser_state: always "not parser inserted" for internal scripts.
if (!blink::V8ScriptRunner::CompileScript(
blink::ScriptState::From(context), ssc, sanitizeScriptErrors,
compile_options, no_cache_reason, blink::ReferrerScriptInfo())
.ToLocal(&script)) {
DCHECK(tryCatch.HasCaught());
return result;
}
return blink::V8ScriptRunner::RunCompiledScript(
isolate, script, blink::ToExecutionContext(context));
}
bool IsScriptForbidden() {
return blink::ScriptForbiddenScope::IsScriptForbidden();
}
void RegisterURLSchemeAsLocal(const blink::WebString& scheme) {
blink::SchemeRegistry::RegisterURLSchemeAsLocal(scheme);
}
void RegisterURLSchemeAsSecure(const blink::WebString& scheme) {
blink::SchemeRegistry::RegisterURLSchemeAsSecure(scheme);
}
void RegisterURLSchemeAsSupportingFetchAPI(const blink::WebString& scheme) {
blink::SchemeRegistry::RegisterURLSchemeAsSupportingFetchAPI(scheme);
}
struct CefScriptForbiddenScope::Impl {
blink::ScriptForbiddenScope scope_;
};
CefScriptForbiddenScope::CefScriptForbiddenScope() : impl_(new Impl()) {}
CefScriptForbiddenScope::~CefScriptForbiddenScope() {}
bool ResponseWasCached(const blink::WebURLResponse& response) {
return response.ToResourceResponse().WasCached();
}
} // namespace blink_glue