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// Copyright (c) 2012 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 CHROME_BROWSER_EXTENSIONS_API_DECLARATIVE_WEBREQUEST_WEBREQUEST_CONDITION_ATTRIBUTE_H_
#define CHROME_BROWSER_EXTENSIONS_API_DECLARATIVE_WEBREQUEST_WEBREQUEST_CONDITION_ATTRIBUTE_H_
#pragma once
#include <string>
#include <vector>
#include "base/basictypes.h"
#include "base/memory/linked_ptr.h"
#include "base/memory/scoped_ptr.h"
#include "chrome/browser/extensions/api/declarative_webrequest/request_stages.h"
#include "chrome/common/extensions/api/declarative.h"
#include "webkit/glue/resource_type.h"
namespace base {
class Value;
}
namespace net {
class URLRequest;
}
namespace extensions {
// Base class for all condition attributes of the declarative Web Request API
// except for condition attribute to test URLPatterns.
class WebRequestConditionAttribute {
public:
enum Type {
CONDITION_RESOURCE_TYPE
};
WebRequestConditionAttribute();
virtual ~WebRequestConditionAttribute();
// Factory method that creates a WebRequestConditionAttribute for the JSON
// dictionary {|name|: |value|} passed by the extension API. Sets |error| and
// returns NULL if something fails.
// The ownership of |value| remains at the caller.
static scoped_ptr<WebRequestConditionAttribute> Create(
const std::string& name,
const base::Value* value,
std::string* error);
// Returns a bit vector representing extensions::RequestStages. The bit vector
// contains a 1 for each request stage during which the condition attribute
// can be tested.
virtual int GetStages() const = 0;
// Returns whether the condition is fulfilled for this request.
virtual bool IsFulfilled(net::URLRequest* request,
RequestStages request_stage) = 0;
virtual Type GetType() const = 0;
// Returns whether condition attributes of type |instance_type| are known
// and can be instantiated by Create().
static bool IsKnownType(const std::string& instance_type);
private:
DISALLOW_COPY_AND_ASSIGN(WebRequestConditionAttribute);
};
typedef std::vector<linked_ptr<WebRequestConditionAttribute> >
WebRequestConditionAttributes;
//
// The following are concrete condition attributes.
//
// Condition that checks whether a request is for a specific resource type.
class WebRequestConditionAttributeResourceType
: public WebRequestConditionAttribute {
public:
virtual ~WebRequestConditionAttributeResourceType();
static bool IsMatchingType(const std::string& instance_type);
// Factory method, see WebRequestConditionAttribute::Create.
static scoped_ptr<WebRequestConditionAttribute> Create(
const std::string& name,
const base::Value* value,
std::string* error);
// Implementation of WebRequestConditionAttribute:
virtual int GetStages() const OVERRIDE;
virtual bool IsFulfilled(net::URLRequest* request,
RequestStages request_stage) OVERRIDE;
virtual Type GetType() const OVERRIDE;
private:
explicit WebRequestConditionAttributeResourceType(
const std::vector<ResourceType::Type>& types);
std::vector<ResourceType::Type> types_;
DISALLOW_COPY_AND_ASSIGN(WebRequestConditionAttributeResourceType);
};
} // namespace extensions
#endif // CHROME_BROWSER_EXTENSIONS_API_DECLARATIVE_WEBREQUEST_WEBREQUEST_CONDITION_ATTRIBUTE_H_
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