Initial scriptable object implementation.

remoting/client/plugin/chromoting_scriptable_object.cc

+// Copyright 2010 Google Inc. All Rights Reserved.
+// Author: ajwong@google.com (Albert Wong)
+
+#include "remoting/client/plugin/chromoting_scriptable_object.h"
+
+#include "remoting/client/client_config.h"
+#include "remoting/client/plugin/chromoting_plugin.h"
+
+#include "third_party/ppapi/cpp/var.h"
+
+using pp::Var;
+
+namespace remoting {
+ChromotingScriptableObject::ChromotingScriptableObject(
+    ChromotingPlugin* instance)
+    : instance_(instance) {
+}
+
+ChromotingScriptableObject::~ChromotingScriptableObject() {
+}
+
+void ChromotingScriptableObject::Init() {
+  // Property addition order should match the interface description at the
+  // top of chromoting_scriptable_object.h.
+  AddAttribute("onreadystatechange", Var());
+
+  AddAttribute("NOT_CONNECTED", Var(0));
+  AddAttribute("CONNECTED", Var(1));
+
+  AddMethod("connect", &ChromotingScriptableObject::DoConnect);
+
+  // TODO(ajwong): Figure out how to implement the status variable.
+  AddAttribute("status", Var("not_implemented_yet"));
+}
+
+bool ChromotingScriptableObject::HasProperty(const Var& name, Var* exception) {
+  // TODO(ajwong): Check if all these name.is_string() sentinels are required.
+  if (!name.is_string()) {
+    *exception = Var("HasProperty expects a string for the name.");
+    return false;
+  }
+
+  PropertyNameMap::const_iterator iter = property_names_.find(name.AsString());
+  if (iter == property_names_.end()) {
+    return false;
+  }
+
+  return properties_[iter->second].method == NULL;
+}
+
+bool ChromotingScriptableObject::HasMethod(const Var& name, Var* exception) {
+  // TODO(ajwong): Check if all these name.is_string() sentinels are required.
+  if (!name.is_string()) {
+    *exception = Var("HasMethod expects a string for the name.");
+    return false;
+  }
+
+  PropertyNameMap::const_iterator iter = property_names_.find(name.AsString());
+  if (iter == property_names_.end()) {
+    return false;
+  }
+
+  return properties_[iter->second].method != NULL;
+}
+
+Var ChromotingScriptableObject::GetProperty(const Var& name, Var* exception) {
+  // TODO(ajwong): Check if all these name.is_string() sentinels are required.
+  if (!name.is_string()) {
+    *exception = Var("GetProperty expects a string for the name.");
+    return Var();
+  }
+
+  PropertyNameMap::const_iterator iter = property_names_.find(name.AsString());
+
+  // No property found.
+  if (iter == property_names_.end()) {
+    return ScriptableObject::GetProperty(name, exception);
+  }
+
+  // TODO(ajwong): This incorrectly return a null object if a function
+  // property is requested.
+  return properties_[iter->second].attribute;
+}
+
+void ChromotingScriptableObject::GetAllPropertyNames(
+    std::vector<Var>* properties,
+    Var* exception) {
+  for (size_t i = 0; i < properties_.size(); i++) {
+    properties->push_back(Var(properties_[i].name));
+  }
+}
+
+void ChromotingScriptableObject::SetProperty(const Var& name,
+                                             const Var& value,
+                                             Var* exception) {
+  // TODO(ajwong): Check if all these name.is_string() sentinels are required.
+  if (!name.is_string()) {
+    *exception = Var("SetProperty expects a string for the name.");
+    return;
+  }
+
+  // Only allow writing to onreadystatechange.  See top of
+  // chromoting_scriptable_object.h for the object interface definition.
+  std::string property_name = name.AsString();
+  if (property_name != "onstatechange") {
+    *exception =
+        Var("Cannot set property " + property_name + " on this object.");
+    return;
+  }
+
+  // Since we're whitelisting the propertie that are settable above, we can
+  // assume that the property exists in the map.
+  properties_[property_names_[property_name]].attribute = value;
+}
+
+Var ChromotingScriptableObject::Call(const Var& method_name,
+                                     const std::vector<Var>& args,
+                                     Var* exception) {
+  PropertyNameMap::const_iterator iter =
+      property_names_.find(method_name.AsString());
+  if (iter == property_names_.end()) {
+    return pp::ScriptableObject::Call(method_name, args, exception);
+  }
+
+  return (this->*(properties_[iter->second].method))(args, exception);
+}
+
+void ChromotingScriptableObject::AddAttribute(const std::string& name,
+                                              Var attribute) {
+  property_names_[name] = properties_.size();
+  properties_.push_back(PropertyDescriptor(name, attribute));
+}
+
+void ChromotingScriptableObject::AddMethod(const std::string& name,
+                                           MethodHandler handler) {
+  property_names_[name] = properties_.size();
+  properties_.push_back(PropertyDescriptor(name, handler));
+}
+
+pp::Var ChromotingScriptableObject::DoConnect(const std::vector<Var>& args,
+                                           Var* exception) {
+  if (args.size() != 3) {
+    *exception = Var("Usage: connect(username, host_jid, auth_token");
+    return Var();
+  }
+
+  ClientConfig config;
+
+  if (!args[0].is_string()) {
+    *exception = Var("The username must be a string.");
+    return Var();
+  }
+  config.username = args[0].AsString();
+
+  if (!args[1].is_string()) {
+    *exception = Var("The host_jid must be a string.");
+    return Var();
+  }
+  config.host_jid = args[1].AsString();
+
+  if (!args[2].is_string()) {
+    *exception = Var("The auth_token must be a string.");
+    return Var();
+  }
+  config.auth_token = args[2].AsString();
+
+  instance_->Connect(config);
+
+  return Var();
+}
+
+}  // namespace remoting