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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.
#ifndef EXTENSIONS_RENDERER_DISPATCHER_DELEGATE_H_
#define EXTENSIONS_RENDERER_DISPATCHER_DELEGATE_H_
#include <set>
#include <string>
#include "base/memory/scoped_ptr.h"
#include "extensions/common/features/feature.h"
#include "v8/include/v8.h"
namespace blink {
class WebFrame;
}
namespace extensions {
class Dispatcher;
class Extension;
class ModuleSystem;
class ResourceBundleSourceMap;
class ScriptContext;
class URLPatternSet;
// Base class and default implementation for an extensions::Dispacher delegate.
// DispatcherDelegate can be used to override and extend the behavior of the
// extensions system's renderer side.
class DispatcherDelegate {
public:
virtual ~DispatcherDelegate() {}
// Creates a new ScriptContext for a given v8 context.
virtual scoped_ptr<ScriptContext> CreateScriptContext(
const v8::Handle<v8::Context>& v8_context,
blink::WebFrame* frame,
const Extension* extension,
Feature::Context context_type,
const Extension* effective_extension,
Feature::Context effective_context_type) = 0;
// Initializes origin permissions for a newly created extension context.
virtual void InitOriginPermissions(const Extension* extension,
bool is_extension_active) {}
// Includes additional native handlers in a ScriptContext's ModuleSystem.
virtual void RegisterNativeHandlers(Dispatcher* dispatcher,
ModuleSystem* module_system,
ScriptContext* context) {}
// Includes additional source resources into the resource map.
virtual void PopulateSourceMap(ResourceBundleSourceMap* source_map) {}
// Requires additional modules within an extension context's module system.
virtual void RequireAdditionalModules(ScriptContext* context,
bool is_within_platform_app) {}
// Allows the delegate to respond to an updated set of active extensions in
// the Dispatcher.
virtual void OnActiveExtensionsUpdated(
const std::set<std::string>& extension_ids) {}
// Sets the current Chrome channel.
// TODO(rockot): This doesn't belong in a generic extensions system interface.
// See http://crbug.com/368431.
virtual void SetChannel(int channel) {}
// Clears extension permissions specific to a given tab.
// TODO(rockot): This doesn't belong in a generic extensions system interface.
// See http://crbug.com/368431.
virtual void ClearTabSpecificPermissions(
const extensions::Dispatcher* dispatcher,
int tab_id,
const std::vector<std::string>& extension_ids) {}
// Updates extension permissions specific to a given tab.
// TODO(rockot): This doesn't belong in a generic extensions system interface.
// See http://crbug.com/368431.
virtual void UpdateTabSpecificPermissions(
const extensions::Dispatcher* dispatcher,
const GURL& url,
int tab_id,
const std::string& extension_id,
const extensions::URLPatternSet& origin_set) {}
};
} // namespace extensions
#endif // EXTENSIONS_RENDERER_DISPATCHER_DELEGATE_H_
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