Upstream iOS implementation of dom_distiller

components/dom_distiller/ios/distiller_page_ios.h

Index: components/dom_distiller/ios/distiller_page_ios.h
diff --git a/components/dom_distiller/ios/distiller_page_ios.h b/components/dom_distiller/ios/distiller_page_ios.h
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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 COMPONENTS_DOM_DISTILLER_IOS_DISTILLER_PAGE_IOS_H_
+#define COMPONENTS_DOM_DISTILLER_IOS_DISTILLER_PAGE_IOS_H_
+
+#include <string>
+
+#include "base/memory/scoped_ptr.h"
+#include "base/memory/weak_ptr.h"
+#include "components/dom_distiller/core/distiller_page.h"
+#include "ios/web/public/web_state/web_state_observer.h"
+#include "url/gurl.h"
+
+namespace ios {
+class WebControllerProvider;
+}
+
+namespace web {
+class BrowserState;
+class WebState;
+}
+
+namespace dom_distiller {
+
+class DistillerWebStateObserver;
+
+// Loads URLs and injects JavaScript into a page, extracting the distilled page
+// content.
+class DistillerPageIOS : public DistillerPage {
+ public:
+  explicit DistillerPageIOS(web::BrowserState* browser_state);
+  ~DistillerPageIOS() override;
+
+ private:
+  friend class DistillerWebStateObserver;
+
+  // DistillerPage implementation:
+  void DistillPageImpl(const GURL& url, const std::string& script) override;
+
+  // Called by |web_state_observer_| once the page has finished loading.
+  void OnLoadURLDone(web::PageLoadCompletionStatus load_completion_status);
+
+  // Called once the |script_| has been evaluated on the page.
+  void HandleJavaScriptResultString(NSString* result);
+
+  web::BrowserState* browser_state_;
+  GURL url_;
+  std::string script_;
+  scoped_ptr<ios::WebControllerProvider> provider_;
+  scoped_ptr<DistillerWebStateObserver> web_state_observer_;
+  base::WeakPtrFactory<DistillerPageIOS> weak_ptr_factory_;
+};
+
+}  // namespace dom_distiller
+
+#endif  // COMPONENTS_DOM_DISTILLER_IOS_DISTILLER_PAGE_IOS_H_