Data Reduction Proxy Interstitials

components/data_reduction_proxy/content/data_reduction_proxy_ui_manager.h

+// Copyright (c) 2012 The Chromium Authors. All rights reserved.

[bengr, 2014/10/31 17:06:48]

It's 2014, fyi. :)

[megjablon, 2014/12/11 23:32:06]

Done.

+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+//
+// The data reduction proxy ui manager handles displaying blocking pages. After
+// a page is loaded from the blocking page, another blocking page will not be
+// shown for 5 minutes.
+
+#ifndef COMPONENTS_DATA_REDUCTION_PROXY_CONTENT_DATA_REDUCTION_PROXY_UI_MANAGER_H_
+#define COMPONENTS_DATA_REDUCTION_PROXY_CONTENT_DATA_REDUCTION_PROXY_UI_MANAGER_H_
+
+#include <vector>
+
+#include "base/callback.h"
+#include "base/memory/ref_counted.h"
+#include "base/time/time.h"
+#include "url/gurl.h"
+
+namespace base {
+class Time;
+class Thread;
+}
+
+namespace data_reduction_proxy {
+
+enum DRPBlockingPageType {
+  // No blocking page.
+  DRP_NO_PAGE,
+
+  // The bypass is due to illegal or blacklisted content that cannot go through
+  // the data reduction proxy.
+  DRP_ILLEGAL_OR_BLACKLISTED,
+
+  // The bypass is due to difficulties connecting to the proxy.
+  DRP_TECHNICAL_DIFFICULTIES,
+};
+
+// Construction needs to happen on the main thread.
+class DataReductionProxyUIManager
+    : public base::RefCountedThreadSafe<DataReductionProxyUIManager> {
+ public:
+  // Passed a boolean indicating whether or not it is OK to proceed with
+  // loading an URL.
+  typedef base::Callback<void(bool /*proceed*/)> UrlCheckCallback;
+
+  // Structure used to pass parameters between the IO and UI thread when
+  // interacting with the blocking page.
+  struct BypassResource {
+    BypassResource();
+    ~BypassResource();
+
+    GURL url;
+    bool is_subresource;
+    DRPBlockingPageType blocking_page_type;

[bengr, 2014/10/31 17:06:48]

Spell out DataReductionProxy instead of using DRP

[megjablon, 2014/12/11 23:32:06]

Removing the blocking page type since this page is just for testing.

+    UrlCheckCallback callback;  // This is called back on the IO thread.
+    int render_process_host_id;
+    int render_view_id;
+  };
+
+  DataReductionProxyUIManager();
+
+  // Called on the UI thread to display an interstitial page.
+  // |url| is the url of the resource that matches a safe browsing list.
+  // If the request contained a chain of redirects, |url| is the last url
+  // in the chain, and |original_url| is the first one (the root of the
+  // chain). Otherwise, |original_url| = |url|.
+  virtual void DisplayBlockingPage(const BypassResource& resource);
+
+  // The blocking page on the UI thread has completed.
+  void OnBlockingPageDone(const std::vector<BypassResource>& resources,
+                          bool proceed);
+
+ private:
+  virtual ~DataReductionProxyUIManager();
+
+  friend class base::RefCountedThreadSafe<DataReductionProxyUIManager>;

[bengr, 2014/10/31 17:06:48]

Why do you need to friend the UIManager?

[megjablon, 2014/12/11 23:32:06]

https://code.google.com/p/chromium/codesearch#chromium/src/base/memory/ref_co...
Since it is ref counted.

+  base::Time proceed_blocking_page_;
+
+  DISALLOW_COPY_AND_ASSIGN(DataReductionProxyUIManager);
+};
+
+}  // namespace data_reduction_proxy
+
+#endif  // COMPONENTS_DATA_REDUCTION_PROXY_CONTENT_DATA_REDUCTION_PROXY_UI_MANAGER_H_