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      1 // Copyright 2013 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 "mojo/edk/js/mojo_runner_delegate.h"
      6 
      7 #include "base/bind.h"
      8 #include "base/path_service.h"
      9 #include "gin/converter.h"
     10 #include "gin/modules/console.h"
     11 #include "gin/modules/module_registry.h"
     12 #include "gin/modules/timer.h"
     13 #include "gin/try_catch.h"
     14 #include "mojo/edk/js/core.h"
     15 #include "mojo/edk/js/handle.h"
     16 #include "mojo/edk/js/support.h"
     17 #include "mojo/edk/js/threading.h"
     18 
     19 namespace mojo {
     20 namespace edk {
     21 namespace js {
     22 
     23 namespace {
     24 
     25 // TODO(abarth): Rather than loading these modules from the file system, we
     26 // should load them from the network via Mojo IPC.
     27 std::vector<base::FilePath> GetModuleSearchPaths() {
     28   std::vector<base::FilePath> search_paths(2);
     29   PathService::Get(base::DIR_SOURCE_ROOT, &search_paths[0]);
     30   PathService::Get(base::DIR_EXE, &search_paths[1]);
     31   search_paths[1] = search_paths[1].AppendASCII("gen");
     32   return search_paths;
     33 }
     34 
     35 void StartCallback(base::WeakPtr<gin::Runner> runner,
     36                    MojoHandle pipe,
     37                    v8::Handle<v8::Value> module) {
     38   v8::Isolate* isolate = runner->GetContextHolder()->isolate();
     39   v8::Handle<v8::Function> start;
     40   CHECK(gin::ConvertFromV8(isolate, module, &start));
     41 
     42   v8::Handle<v8::Value> args[] = {
     43       gin::ConvertToV8(isolate, Handle(pipe)) };
     44   runner->Call(start, runner->global(), 1, args);
     45 }
     46 
     47 }  // namespace
     48 
     49 MojoRunnerDelegate::MojoRunnerDelegate()
     50     : ModuleRunnerDelegate(GetModuleSearchPaths()) {
     51   AddBuiltinModule(gin::Console::kModuleName, gin::Console::GetModule);
     52   AddBuiltinModule(gin::TimerModule::kName, gin::TimerModule::GetModule);
     53   AddBuiltinModule(Core::kModuleName, Core::GetModule);
     54   AddBuiltinModule(Support::kModuleName, Support::GetModule);
     55   AddBuiltinModule(Threading::kModuleName, Threading::GetModule);
     56 }
     57 
     58 MojoRunnerDelegate::~MojoRunnerDelegate() {
     59 }
     60 
     61 void MojoRunnerDelegate::Start(gin::Runner* runner,
     62                                MojoHandle pipe,
     63                                const std::string& module) {
     64   gin::Runner::Scope scope(runner);
     65   gin::ModuleRegistry* registry =
     66       gin::ModuleRegistry::From(runner->GetContextHolder()->context());
     67   registry->LoadModule(runner->GetContextHolder()->isolate(), module,
     68                        base::Bind(StartCallback, runner->GetWeakPtr(), pipe));
     69   AttemptToLoadMoreModules(runner);
     70 }
     71 
     72 void MojoRunnerDelegate::UnhandledException(gin::ShellRunner* runner,
     73                                             gin::TryCatch& try_catch) {
     74   gin::ModuleRunnerDelegate::UnhandledException(runner, try_catch);
     75   LOG(ERROR) << try_catch.GetStackTrace();
     76 }
     77 
     78 }  // namespace js
     79 }  // namespace edk
     80 }  // namespace mojo
     81