Move core url data manager classes to content.

BUG=169170
Review URL: https://codereview.chromium.org/12049052

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@178663 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 104 insertions, 0 deletions

diff --git a/content/browser/webui/url_data_manager_backend.h b/content/browser/webui/url_data_manager_backend.h
new file mode 100644
index 0000000..4c26ba6
--- /dev/null
+++ b/content/browser/webui/url_data_manager_backend.h
@@ -0,0 +1,104 @@
+// 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 CONTENT_BROWSER_WEBUI_URL_DATA_MANAGER_BACKEND_H_
+#define CONTENT_BROWSER_WEBUI_URL_DATA_MANAGER_BACKEND_H_
+
+#include <map>
+#include <string>
+#include <vector>
+
+#include "base/basictypes.h"
+#include "base/compiler_specific.h"
+#include "base/supports_user_data.h"
+#include "content/browser/webui/url_data_manager.h"
+#include "net/url_request/url_request_job_factory.h"
+
+class ChromeURLDataManagerBackend;
+class GURL;
+class URLRequestChromeJob;
+
+namespace base {
+class RefCountedMemory;
+}
+
+namespace net {
+class URLRequest;
+class URLRequestJob;
+}
+
+// ChromeURLDataManagerBackend is used internally by ChromeURLDataManager on the
+// IO thread. In most cases you can use the API in ChromeURLDataManager and
+// ignore this class. ChromeURLDataManagerBackend is owned by
+// ChromeURLRequestContext.
+class ChromeURLDataManagerBackend : public base::SupportsUserData::Data {
+ public:
+  typedef int RequestID;
+
+  ChromeURLDataManagerBackend();
+  virtual ~ChromeURLDataManagerBackend();
+
+  // Invoked to create the protocol handler for chrome://. |is_incognito| should
+  // be set for incognito profiles.
+  static net::URLRequestJobFactory::ProtocolHandler* CreateProtocolHandler(
+      ChromeURLDataManagerBackend* backend,
+      bool is_incognito);
+
+  // Adds a DataSource to the collection of data sources.
+  void AddDataSource(URLDataSourceImpl* 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<URLDataSourceImpl> > 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 GURL& url, URLRequestChromeJob* job);
+
+  // Helper function to call StartDataRequest on |source|'s delegate. This is
+  // needed because while we want to call URLDataSourceDelegate's method, we
+  // need to add a refcount on the source.
+  static void CallStartRequest(scoped_refptr<URLDataSourceImpl> source,
+                               const std::string& path,
+                               bool is_incognito,
+                               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;
+
+  // 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(ChromeURLDataManagerBackend);
+};
+
+// Creates protocol handler for chrome-devtools://. |is_incognito| should be
+// set for incognito profiles.
+net::URLRequestJobFactory::ProtocolHandler*
+CreateDevToolsProtocolHandler(ChromeURLDataManagerBackend* backend,
+                              bool is_incognito);
+
+#endif  // CONTENT_BROWSER_WEBUI_URL_DATA_MANAGER_BACKEND_H_