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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 IOS_INTERNAL_WEB_WEBUI_URL_DATA_MANAGER_BACKEND_IOS_H_
#define IOS_INTERNAL_WEB_WEBUI_URL_DATA_MANAGER_BACKEND_IOS_H_
#include <map>
#include <string>
#include <vector>
#include "base/basictypes.h"
#include "base/compiler_specific.h"
#include "base/supports_user_data.h"
#include "ios/web/public/url_data_source_ios.h"
#include "ios/web/webui/url_data_manager_ios.h"
#include "net/url_request/url_request_job_factory.h"
class GURL;
namespace base {
class RefCountedMemory;
}
namespace web {
class BrowserState;
class URLDataSourceIOSImpl;
class URLRequestChromeJob;
// URLDataManagerIOSBackend is used internally by URLDataManagerIOS on
// the IO thread. In most cases you can use the API in URLDataManagerIOS
// and ignore this class. URLDataManagerIOSBackend is owned by BrowserState.
class URLDataManagerIOSBackend : public base::SupportsUserData::Data {
public:
typedef int RequestID;
URLDataManagerIOSBackend();
~URLDataManagerIOSBackend() override;
// Invoked to create the protocol handler for chrome://. |is_incognito| should
// be set for incognito browser states. Called on the UI thread.
static scoped_ptr<net::URLRequestJobFactory::ProtocolHandler>
CreateProtocolHandler(BrowserState* browser_state);
// Adds a DataSource to the collection of data sources.
void AddDataSource(URLDataSourceIOSImpl* source);
// DataSource invokes this. Sends the data to the URLRequest.
void DataAvailable(RequestID request_id, base::RefCountedMemory* bytes);
static net::URLRequestJob* Factory(net::URLRequest* request,
const std::string& scheme);
private:
friend class URLRequestChromeJob;
typedef std::map<std::string, scoped_refptr<URLDataSourceIOSImpl> >
DataSourceMap;
typedef std::map<RequestID, URLRequestChromeJob*> PendingRequestMap;
// Called by the job when it's starting up.
// Returns false if |url| is not a URL managed by this object.
bool StartRequest(const net::URLRequest* request, URLRequestChromeJob* job);
// Helper function to call StartDataRequest on |source|'s delegate. This is
// needed because while we want to call URLDataSourceIOSDelegate's method, we
// need to add a refcount on the source.
static void CallStartRequest(scoped_refptr<URLDataSourceIOSImpl> source,
const std::string& path,
int request_id);
// Remove a request from the list of pending requests.
void RemoveRequest(URLRequestChromeJob* job);
// Returns true if the job exists in |pending_requests_|. False otherwise.
// Called by ~URLRequestChromeJob to verify that |pending_requests_| is kept
// up to date.
bool HasPendingJob(URLRequestChromeJob* job) const;
// Look up the data source for the request. Returns the source if it is found,
// else NULL.
URLDataSourceIOSImpl* GetDataSourceFromURL(const GURL& url);
// Custom sources of data, keyed by source path (e.g. "favicon").
DataSourceMap data_sources_;
// All pending URLRequestChromeJobs, keyed by ID of the request.
// URLRequestChromeJob calls into this object when it's constructed and
// destructed to ensure that the pointers in this map remain valid.
PendingRequestMap pending_requests_;
// The ID we'll use for the next request we receive.
RequestID next_request_id_;
DISALLOW_COPY_AND_ASSIGN(URLDataManagerIOSBackend);
};
} // namespace web
#endif // IOS_INTERNAL_WEB_WEBUI_URL_DATA_MANAGER_BACKEND_IOS_H_
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