components/html_viewer/test_html_viewer_impl.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "components/html_viewer/test_html_viewer_impl.h"
   6
   7 #include "base/json/json_writer.h"
   8 #include "base/stl_util.h"
   9 #include "base/values.h"
  10 #include "gin/converter.h"
  11 #include "third_party/WebKit/public/platform/WebString.h"
  12 #include "third_party/WebKit/public/web/WebDocument.h"
  13 #include "third_party/WebKit/public/web/WebLocalFrame.h"
  14 #include "third_party/WebKit/public/web/WebScriptExecutionCallback.h"
  15 #include "third_party/WebKit/public/web/WebScriptSource.h"
  16
  17 using blink::WebDocument;
  18 using blink::WebFrame;
  19
  20 namespace html_viewer {
  21
  22 namespace {
  23
  24 std::string V8ValueToJSONString(
  25     blink::WebLocalFrame* local_frame,
  26     const blink::WebVector<v8::Local<v8::Value>>& result) {
  27   // TODO(sky): use V8ValueConverter when refactored to a common place.
  28   DCHECK(!result.isEmpty());
  29   base::ListValue list_value;
  30   for (auto& value : result)
  31     list_value.Append(new base::StringValue(gin::V8ToString(value)));
  32   std::string json_string;
  33   return base::JSONWriter::Write(list_value, &json_string) ? json_string
  34                                                            : std::string();
  35 }
  36
  37 }  // namespace
  38
  39 class TestHTMLViewerImpl::ExecutionCallbackImpl
  40     : public blink::WebScriptExecutionCallback {
  41  public:
  42   ExecutionCallbackImpl(TestHTMLViewerImpl* host,
  43                         const mojo::Callback<void(mojo::String)>& callback)
  44       : host_(host), callback_(callback) {}
  45   virtual ~ExecutionCallbackImpl() {}
  46
  47  private:
  48   // blink::WebScriptExecutionCallback:
  49   virtual void completed(const blink::WebVector<v8::Local<v8::Value>>& result) {
  50     mojo::String callback_result;
  51     if (!result.isEmpty())
  52       callback_result = V8ValueToJSONString(host_->web_frame_, result);
  53     callback_.Run(callback_result);
  54     host_->CallbackCompleted(this);
  55   }
  56
  57   TestHTMLViewerImpl* host_;
  58   const mojo::Callback<void(mojo::String)> callback_;
  59
  60   DISALLOW_COPY_AND_ASSIGN(ExecutionCallbackImpl);
  61 };
  62
  63 TestHTMLViewerImpl::TestHTMLViewerImpl(
  64     blink::WebLocalFrame* web_frame,
  65     mojo::InterfaceRequest<TestHTMLViewer> request)
  66     : web_frame_(web_frame), binding_(this, request.Pass()) {}
  67
  68 TestHTMLViewerImpl::~TestHTMLViewerImpl() {
  69   STLDeleteElements(&callbacks_);
  70 }
  71
  72 void TestHTMLViewerImpl::CallbackCompleted(
  73     ExecutionCallbackImpl* callback_impl) {
  74   scoped_ptr<ExecutionCallbackImpl> owned_callback_impl(callback_impl);
  75   callbacks_.erase(callback_impl);
  76 }
  77
  78 void TestHTMLViewerImpl::GetContentAsText(
  79     const GetContentAsTextCallback& callback) {
  80   callback.Run(web_frame_->document().contentAsTextForTesting().utf8());
  81 }
  82
  83 void TestHTMLViewerImpl::ExecuteScript(const mojo::String& script,
  84                                        const ExecuteScriptCallback& callback) {
  85   ExecutionCallbackImpl* callback_impl =
  86       new ExecutionCallbackImpl(this, callback);
  87   callbacks_.insert(callback_impl);
  88   web_frame_->requestExecuteScriptAndReturnValue(
  89       blink::WebScriptSource(blink::WebString::fromUTF8(script)), false,
  90       callback_impl);
  91 }
  92
  93 }  // namespace html_viewer