Add a simple one shot and repeating timer API for Mojo.js.

Various further rework of bindings stuff to facilitate.

Review URL: https://codereview.chromium.org/120043008

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@242284 0039d316-1c4b-4281-b951-d872f2087c98

gin/function_template.h

@@ -270,6 +270,13 @@ inline bool GetNextArgument(Arguments* args, int create_flags, bool is_first,
   return true;
 }
 
+// It's common for clients to just need the isolate, so we make that easy.
+inline bool GetNextArgument(Arguments* args, int create_flags,
+                            bool is_first, v8::Isolate** result) {
+  *result = args->isolate();
+  return true;
+}
+
 
 // DispatchToCallback converts all the JavaScript arguments to C++ types and
 // invokes the base::Callback.

gin/function_template.h.pump

@@ -141,6 +141,13 @@ inline bool GetNextArgument(Arguments* args, int create_flags, bool is_first,
   return true;
 }
 
+// It's common for clients to just need the isolate, so we make that easy.
+inline bool GetNextArgument(Arguments* args, int create_flags,
+                            bool is_first, v8::Isolate** result) {
+  *result = args->isolate();
+  return true;
+}
+
 
 // DispatchToCallback converts all the JavaScript arguments to C++ types and
 // invokes the base::Callback.

gin/gin.gyp

@@ -44,6 +44,8 @@
         'modules/module_registry.h',
         'modules/module_runner_delegate.cc',
         'modules/module_runner_delegate.h',
+        'modules/timer.cc',
+        'modules/timer.h',
         'object_template_builder.cc',
         'object_template_builder.h',
         'per_context_data.cc',
@@ -112,6 +114,7 @@
       ],
       'sources': [
         'converter_unittest.cc',
+        'modules/timer_unittest.cc',
         'test/run_all_unittests.cc',
         'test/run_js_tests.cc',
         'runner_unittest.cc',

gin/modules/console.cc

@@ -29,7 +29,7 @@ WrapperInfo g_wrapper_info = { kEmbedderNativeGin };
 
 const char Console::kModuleName[] = "console";
 
-v8::Local<ObjectTemplate> Console::GetTemplate(v8::Isolate* isolate) {
+v8::Local<v8::Value> Console::GetModule(v8::Isolate* isolate) {
   PerIsolateData* data = PerIsolateData::From(isolate);
   v8::Local<ObjectTemplate> templ = data->GetObjectTemplate(&g_wrapper_info);
   if (templ.IsEmpty()) {
@@ -38,7 +38,7 @@ v8::Local<ObjectTemplate> Console::GetTemplate(v8::Isolate* isolate) {
         .Build();
     data->SetObjectTemplate(&g_wrapper_info, templ);
   }
-  return templ;
+  return templ->NewInstance();
 }
 
 }  // namespace gin

gin/modules/console.h

@@ -15,7 +15,7 @@ namespace gin {
 class GIN_EXPORT Console {
  public:
   static const char kModuleName[];
-  static v8::Local<v8::ObjectTemplate> GetTemplate(v8::Isolate* isolate);
+  static v8::Local<v8::Value> GetModule(v8::Isolate* isolate);
 };
 
 }  // namespace gin

gin/modules/module_registry.cc

@@ -123,11 +123,10 @@ ModuleRegistry* ModuleRegistry::From(v8::Handle<Context> context) {
   return static_cast<ModuleRegistry*>(external->Value());
 }
 
-void ModuleRegistry::AddBuiltinModule(Isolate* isolate,
-                                      const std::string& id,
-                                      v8::Handle<ObjectTemplate> templ) {
+void ModuleRegistry::AddBuiltinModule(Isolate* isolate, const std::string& id,
+                                      v8::Handle<Value> module) {
   DCHECK(!id.empty());
-  RegisterModule(isolate, id, templ->NewInstance());
+  RegisterModule(isolate, id, module);
 }
 
 void ModuleRegistry::AddPendingModule(Isolate* isolate,

gin/modules/module_registry.h

@@ -43,9 +43,8 @@ class GIN_EXPORT ModuleRegistry : public ContextSupplement {
                               v8::Handle<v8::ObjectTemplate> templ);
 
   // The caller must have already entered our context.
-  void AddBuiltinModule(v8::Isolate* isolate,
-                        const std::string& id,
-                        v8::Handle<v8::ObjectTemplate> templ);
+  void AddBuiltinModule(v8::Isolate* isolate, const std::string& id,
+                        v8::Handle<v8::Value> module);
 
   // The caller must have already entered our context.
   void AddPendingModule(v8::Isolate* isolate,

gin/modules/module_runner_delegate.cc

@@ -18,8 +18,8 @@ ModuleRunnerDelegate::~ModuleRunnerDelegate() {
 }
 
 void ModuleRunnerDelegate::AddBuiltinModule(const std::string& id,
-                                            ModuleTemplateGetter templ) {
-  builtin_modules_[id] = templ;
+                                            ModuleGetter getter) {
+  builtin_modules_[id] = getter;
 }
 
 void ModuleRunnerDelegate::AttemptToLoadMoreModules(Runner* runner) {

gin/modules/module_runner_delegate.h

@@ -14,8 +14,7 @@
 
 namespace gin {
 
-typedef v8::Local<v8::ObjectTemplate> (*ModuleTemplateGetter)(
-    v8::Isolate* isolate);
+typedef v8::Local<v8::Value> (*ModuleGetter)(v8::Isolate* isolate);
 
 // Emebedders that use AMD modules will probably want to use a RunnerDelegate
 // that inherits from ModuleRunnerDelegate. ModuleRunnerDelegate lets embedders
@@ -26,18 +25,13 @@ class GIN_EXPORT ModuleRunnerDelegate : public RunnerDelegate {
       const std::vector<base::FilePath>& search_paths);
   virtual ~ModuleRunnerDelegate();
 
-  // Lets you register a built-in module. Built-in modules are instantiated by
-  // creating a new instance of a v8::ObjectTemplate rather than by executing
-  // code. This function takes a ModuleTemplateGetter rather than a
-  // v8::ObjectTemplate directly so that embedders can create object templates
-  // lazily.
-  void AddBuiltinModule(const std::string& id, ModuleTemplateGetter templ);
+  void AddBuiltinModule(const std::string& id, ModuleGetter getter);
 
  protected:
   void AttemptToLoadMoreModules(Runner* runner);
 
  private:
-  typedef std::map<std::string, ModuleTemplateGetter> BuiltinModuleMap;
+  typedef std::map<std::string, ModuleGetter> BuiltinModuleMap;
 
   // From RunnerDelegate:
   virtual v8::Handle<v8::ObjectTemplate> GetGlobalTemplate(

gin/modules/timer.cc

@@ -0,0 +1,95 @@
+// Copyright 2013 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 "gin/modules/timer.h"
+
+#include "base/bind.h"
+#include "gin/object_template_builder.h"
+#include "gin/per_context_data.h"
+
+namespace gin {
+
+namespace {
+
+v8::Handle<v8::String> GetHiddenPropertyName(v8::Isolate* isolate) {
+  return gin::StringToSymbol(isolate, "::gin::Timer");
+}
+
+}  // namespace
+
+// Timer
+
+gin::WrapperInfo Timer::kWrapperInfo = { gin::kEmbedderNativeGin };
+
+// static
+Handle<Timer> Timer::Create(TimerType type, v8::Isolate* isolate, int delay_ms,
+                            v8::Handle<v8::Function> function) {
+  return CreateHandle(isolate, new Timer(isolate, type == TYPE_REPEATING,
+                                         delay_ms, function));
+}
+
+ObjectTemplateBuilder Timer::GetObjectTemplateBuilder(v8::Isolate* isolate) {
+  return Wrappable<Timer>::GetObjectTemplateBuilder(isolate)
+      .SetMethod("cancel",
+                 base::Bind(&base::Timer::Stop, base::Unretained(&timer_)))
+      .SetMethod("reset",
+                 base::Bind(&base::Timer::Reset, base::Unretained(&timer_)));
+}
+
+Timer::Timer(v8::Isolate* isolate, bool repeating, int delay_ms,
+             v8::Handle<v8::Function> function)
+    : weak_factory_(this),
+      timer_(false, repeating),
+      runner_(PerContextData::From(
+          isolate->GetCurrentContext())->runner()->GetWeakPtr()) {
+  GetWrapper(runner_->isolate())->SetHiddenValue(GetHiddenPropertyName(isolate),
+                                                 function);
+  timer_.Start(FROM_HERE, base::TimeDelta::FromMilliseconds(delay_ms),
+               base::Bind(&Timer::OnTimerFired, weak_factory_.GetWeakPtr()));
+}
+
+Timer::~Timer() {
+}
+
+void Timer::OnTimerFired() {
+  if (!runner_)
+    return;
+  Runner::Scope scope(runner_.get());
+  v8::Handle<v8::Function> function = v8::Handle<v8::Function>::Cast(
+      GetWrapper(runner_->isolate())->GetHiddenValue(
+          GetHiddenPropertyName(runner_->isolate())));
+  runner_->Call(function, v8::Undefined(runner_->isolate()), 0, NULL);
+}
+
+
+// TimerModule
+
+WrapperInfo TimerModule::kWrapperInfo = { kEmbedderNativeGin };
+
+// static
+Handle<TimerModule> TimerModule::Create(v8::Isolate* isolate) {
+  return CreateHandle(isolate, new TimerModule());
+}
+
+// static
+v8::Local<v8::Value> TimerModule::GetModule(v8::Isolate* isolate) {
+  return Create(isolate)->GetWrapper(isolate);
+}
+
+TimerModule::TimerModule() {
+}
+
+TimerModule::~TimerModule() {
+}
+
+ObjectTemplateBuilder TimerModule::GetObjectTemplateBuilder(
+    v8::Isolate* isolate) {
+  return Wrappable<TimerModule>::GetObjectTemplateBuilder(isolate)
+      .SetMethod("createOneShot",
+                 base::Bind(&Timer::Create, Timer::TYPE_ONE_SHOT))
+      .SetMethod("createRepeating",
+                 base::Bind(&Timer::Create, Timer::TYPE_REPEATING));
+}
+
+}  // namespace gin

gin/modules/timer.h

@@ -0,0 +1,63 @@
+// Copyright 2013 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.
+
+#ifndef GIN_MODULES_TIMER_H_
+#define GIN_MODULES_TIMER_H_
+
+#include "base/memory/weak_ptr.h"
+#include "base/timer/timer.h"
+#include "gin/gin_export.h"
+#include "gin/handle.h"
+#include "gin/runner.h"
+#include "gin/wrappable.h"
+#include "v8/include/v8.h"
+
+namespace gin {
+
+class ObjectTemplateBuilder;
+
+// A simple scriptable timer that can work in one-shot or repeating mode.
+class GIN_EXPORT Timer : public Wrappable<Timer> {
+ public:
+  enum TimerType {
+    TYPE_ONE_SHOT,
+    TYPE_REPEATING
+  };
+
+  static WrapperInfo kWrapperInfo;
+  static Handle<Timer> Create(TimerType type, v8::Isolate* isolate,
+                              int delay_ms, v8::Handle<v8::Function> function);
+
+  virtual ObjectTemplateBuilder GetObjectTemplateBuilder(
+      v8::Isolate* isolate) OVERRIDE;
+
+ private:
+  Timer(v8::Isolate* isolate, bool repeating, int delay_ms,
+        v8::Handle<v8::Function> function);
+  virtual ~Timer();
+  void OnTimerFired();
+
+  base::WeakPtrFactory<Timer> weak_factory_;
+  base::Timer timer_;
+  base::WeakPtr<gin::Runner> runner_;
+};
+
+
+class GIN_EXPORT TimerModule : public Wrappable<TimerModule> {
+ public:
+  static WrapperInfo kWrapperInfo;
+  static Handle<TimerModule> Create(v8::Isolate* isolate);
+  static v8::Local<v8::Value> GetModule(v8::Isolate* isolate);
+
+ private:
+  TimerModule();
+  virtual ~TimerModule();
+
+  virtual ObjectTemplateBuilder GetObjectTemplateBuilder(
+      v8::Isolate* isolate) OVERRIDE;
+};
+
+}  // namespace gin
+
+#endif  // GIN_MODULES_TIMER_H_