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// Copyright (c) 2011 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 "ppapi/cpp/instance.h"
#include "ppapi/c/pp_errors.h"
#include "ppapi/c/ppb_input_event.h"
#include "ppapi/c/ppb_instance.h"
#include "ppapi/c/ppb_messaging.h"
#include "ppapi/cpp/graphics_2d.h"
#include "ppapi/cpp/graphics_3d.h"
#include "ppapi/cpp/image_data.h"
#include "ppapi/cpp/logging.h"
#include "ppapi/cpp/module.h"
#include "ppapi/cpp/module_impl.h"
#include "ppapi/cpp/point.h"
#include "ppapi/cpp/resource.h"
#include "ppapi/cpp/var.h"
namespace pp {
namespace {
template <> const char* interface_name<PPB_InputEvent>() {
return PPB_INPUT_EVENT_INTERFACE;
}
template <> const char* interface_name<PPB_Instance>() {
return PPB_INSTANCE_INTERFACE;
}
template <> const char* interface_name<PPB_Messaging>() {
return PPB_MESSAGING_INTERFACE;
}
} // namespace
Instance::Instance(PP_Instance instance) : pp_instance_(instance) {
}
Instance::~Instance() {
// Ensure that all per-instance objects have been removed. Generally, these
// objects should have their lifetime scoped to the instance, such as being
// instance members or even implemented by your instance sub-class directly.
//
// If they're not unregistered at this point, they will usually have a
// dangling reference to the instance, which can cause a crash later.
PP_DCHECK(interface_name_to_objects_.empty());
}
bool Instance::Init(uint32_t /*argc*/, const char* /*argn*/[],
const char* /*argv*/[]) {
return true;
}
void Instance::DidChangeView(const pp::Rect& /*position*/,
const pp::Rect& /*clip*/) {
}
void Instance::DidChangeFocus(bool /*has_focus*/) {
}
bool Instance::HandleDocumentLoad(const URLLoader& /*url_loader*/) {
return false;
}
bool Instance::HandleInputEvent(const InputEvent& /*event*/) {
return false;
}
void Instance::HandleMessage(const Var& /*message*/) {
return;
}
bool Instance::BindGraphics(const Graphics2D& graphics) {
if (!has_interface<PPB_Instance>())
return false;
return PP_ToBool(get_interface<PPB_Instance>()->BindGraphics(
pp_instance(), graphics.pp_resource()));
}
bool Instance::BindGraphics(const Graphics3D& graphics) {
if (!has_interface<PPB_Instance>())
return false;
return PP_ToBool(get_interface<PPB_Instance>()->BindGraphics(
pp_instance(), graphics.pp_resource()));
}
bool Instance::IsFullFrame() {
if (!has_interface<PPB_Instance>())
return false;
return PP_ToBool(get_interface<PPB_Instance>()->IsFullFrame(pp_instance()));
}
int32_t Instance::RequestInputEvents(uint32_t event_classes) {
if (!has_interface<PPB_InputEvent>())
return PP_ERROR_NOINTERFACE;
return get_interface<PPB_InputEvent>()->RequestInputEvents(pp_instance(),
event_classes);
}
int32_t Instance::RequestFilteringInputEvents(uint32_t event_classes) {
if (!has_interface<PPB_InputEvent>())
return PP_ERROR_NOINTERFACE;
return get_interface<PPB_InputEvent>()->RequestFilteringInputEvents(
pp_instance(), event_classes);
}
void Instance::ClearInputEventRequest(uint32_t event_classes) {
if (!has_interface<PPB_InputEvent>())
return;
get_interface<PPB_InputEvent>()->ClearInputEventRequest(pp_instance(),
event_classes);
}
void Instance::PostMessage(const Var& message) {
if (!has_interface<PPB_Messaging>())
return;
get_interface<PPB_Messaging>()->PostMessage(pp_instance(),
message.pp_var());
}
void Instance::AddPerInstanceObject(const std::string& interface_name,
void* object) {
// Ensure we're not trying to register more than one object per interface
// type. Otherwise, we'll get confused in GetPerInstanceObject.
PP_DCHECK(interface_name_to_objects_.find(interface_name) ==
interface_name_to_objects_.end());
interface_name_to_objects_[interface_name] = object;
}
void Instance::RemovePerInstanceObject(const std::string& interface_name,
void* object) {
InterfaceNameToObjectMap::iterator found = interface_name_to_objects_.find(
interface_name);
if (found == interface_name_to_objects_.end()) {
// Attempting to unregister an object that doesn't exist or was already
// unregistered.
PP_DCHECK(false);
return;
}
// Validate that we're removing the object we thing we are.
PP_DCHECK(found->second == object);
(void)object; // Prevent warning in release mode.
interface_name_to_objects_.erase(found);
}
// static
void* Instance::GetPerInstanceObject(PP_Instance instance,
const std::string& interface_name) {
Instance* that = Module::Get()->InstanceForPPInstance(instance);
if (!that)
return NULL;
InterfaceNameToObjectMap::iterator found =
that->interface_name_to_objects_.find(interface_name);
if (found == that->interface_name_to_objects_.end())
return NULL;
return found->second;
}
} // namespace pp
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