Index: components/dom_distiller/core/dom_distiller_request_view_base.h |
diff --git a/components/dom_distiller/core/dom_distiller_request_view_base.h b/components/dom_distiller/core/dom_distiller_request_view_base.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..16b8ca7d93debd0eb6d6a741cea6943cc253495c |
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+++ b/components/dom_distiller/core/dom_distiller_request_view_base.h |
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+// Copyright 2015 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 COMPONENTS_DOM_DISTILLER_CORE_DOM_DISTILLER_REQUEST_VIEW_BASE_H_ |
+#define COMPONENTS_DOM_DISTILLER_CORE_DOM_DISTILLER_REQUEST_VIEW_BASE_H_ |
+ |
+#include <sstream> |
+#include <string> |
+#include <vector> |
+ |
+#include "base/memory/ref_counted_memory.h" |
+#include "base/memory/scoped_ptr.h" |
+#include "base/strings/utf_string_conversions.h" |
+#include "components/dom_distiller/core/distilled_page_prefs.h" |
+#include "components/dom_distiller/core/dom_distiller_service.h" |
+#include "components/dom_distiller/core/task_tracker.h" |
+#include "components/dom_distiller/core/viewer.h" |
+#include "content/public/browser/url_data_source.h" |
+#include "net/base/url_util.h" |
+ |
+namespace dom_distiller { |
+ |
+// This interface is used to abstract the data callback from the distiller. The |
+// callbacks for different platforms have different numbers of parameters |
+// (namely iOS and Android) which makes this necessary. |
+class DistillerDataCallback { |
+ public: |
+ virtual ~DistillerDataCallback(){}; |
+ virtual void RunCallback(std::string& data) = 0; |
+}; |
+ |
+// Handles receiving data asynchronously for a specific entry, and passing |
+// it along to the data callback for the data source. Lifetime matches that of |
+// the current main frame's page in the Viewer instance. |
+class DomDistillerRequestViewBase |
+ : public ViewRequestDelegate, |
+ public DistilledPagePrefs::Observer { |
+ public: |
+ explicit DomDistillerRequestViewBase( |
+ scoped_ptr<DistillerDataCallback> callback, |
+ DistilledPagePrefs* distilled_page_prefs); |
+ ~DomDistillerRequestViewBase() override; |
+ |
+ // Flag this request as an error and send the error page template. |
+ void FlagAsErrorPage(); |
+ // Get if this viewer is in an error state. |
+ bool IsErrorPage(); |
+ |
+ // ViewRequestDelegate implementation: |
+ void OnArticleReady(const DistilledArticleProto* article_proto) override; |
+ |
+ void OnArticleUpdated(ArticleDistillationUpdate article_update) override; |
+ |
+ void TakeViewerHandle(scoped_ptr<ViewerHandle> viewer_handle); |
+ |
+ protected: |
+ // DistilledPagePrefs::Observer implementation: |
+ void OnChangeFontFamily( |
+ DistilledPagePrefs::FontFamily new_font_family) override; |
+ void OnChangeTheme(DistilledPagePrefs::Theme new_theme) override; |
+ |
+ // Sends JavaScript to the attached Viewer, buffering data if the viewer isn't |
+ // ready. |
+ virtual void SendJavaScript(const std::string& buffer) = 0; |
+ |
+ // The handle to the view request towards the DomDistillerService. It |
+ // needs to be kept around to ensure the distillation request finishes. |
+ scoped_ptr<ViewerHandle> viewer_handle_; |
+ |
+ // Holds the callback to where the data retrieved is sent back. |
+ scoped_ptr<DistillerDataCallback> callback_; |
+ |
+ // Number of pages of the distilled article content that have been rendered by |
+ // the viewer. |
+ int page_count_; |
+ |
+ // Interface for accessing preferences for distilled pages. |
+ DistilledPagePrefs* distilled_page_prefs_; |
+ |
+ // Flag to tell this observer that the web contents are in an error state. |
+ bool is_error_page_; |
+}; |
+ |
+} // namespace dom_distiller |
+ |
+#endif // COMPONENTS_DOM_DISTILLER_CORE_DOM_DISTILLER_REQUEST_VIEW_BASE_H_ |