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