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// Copyright 2014 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 "extensions/renderer/lazy_background_page_native_handler.h"
#include "base/bind.h"
#include "content/public/renderer/render_view.h"
#include "extensions/common/extension_messages.h"
#include "extensions/common/manifest_handlers/background_info.h"
#include "extensions/renderer/extension_helper.h"
#include "extensions/renderer/script_context.h"
namespace extensions {
LazyBackgroundPageNativeHandler::LazyBackgroundPageNativeHandler(
ScriptContext* context)
: ObjectBackedNativeHandler(context) {
RouteFunction(
"IncrementKeepaliveCount",
base::Bind(&LazyBackgroundPageNativeHandler::IncrementKeepaliveCount,
base::Unretained(this)));
RouteFunction(
"DecrementKeepaliveCount",
base::Bind(&LazyBackgroundPageNativeHandler::DecrementKeepaliveCount,
base::Unretained(this)));
}
void LazyBackgroundPageNativeHandler::IncrementKeepaliveCount(
const v8::FunctionCallbackInfo<v8::Value>& args) {
if (!context())
return;
content::RenderView* render_view = context()->GetRenderView();
if (IsContextLazyBackgroundPage(render_view, context()->extension())) {
render_view->Send(new ExtensionHostMsg_IncrementLazyKeepaliveCount(
render_view->GetRoutingID()));
}
}
void LazyBackgroundPageNativeHandler::DecrementKeepaliveCount(
const v8::FunctionCallbackInfo<v8::Value>& args) {
if (!context())
return;
content::RenderView* render_view = context()->GetRenderView();
if (IsContextLazyBackgroundPage(render_view, context()->extension())) {
render_view->Send(new ExtensionHostMsg_DecrementLazyKeepaliveCount(
render_view->GetRoutingID()));
}
}
bool LazyBackgroundPageNativeHandler::IsContextLazyBackgroundPage(
content::RenderView* render_view,
const Extension* extension) {
if (!render_view)
return false;
ExtensionHelper* helper = ExtensionHelper::Get(render_view);
return (extension && BackgroundInfo::HasLazyBackgroundPage(extension) &&
helper->view_type() == VIEW_TYPE_EXTENSION_BACKGROUND_PAGE);
}
} // namespace extensions
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