1cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)// Copyright 2014 The Chromium Authors. All rights reserved. 2cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)// Use of this source code is governed by a BSD-style license that can be 3cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)// found in the LICENSE file. 4cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) 5cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)#include "chrome/browser/dom_distiller/tab_utils.h" 6cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) 7cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)#include "base/message_loop/message_loop.h" 8cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)#include "chrome/browser/dom_distiller/dom_distiller_service_factory.h" 9cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)#include "chrome/browser/ui/tab_contents/core_tab_helper.h" 10cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)#include "chrome/browser/ui/tab_contents/core_tab_helper_delegate.h" 11cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)#include "components/dom_distiller/content/distiller_page_web_contents.h" 12cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)#include "components/dom_distiller/core/distiller_page.h" 13cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)#include "components/dom_distiller/core/dom_distiller_service.h" 14cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)#include "components/dom_distiller/core/task_tracker.h" 155f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles)#include "components/dom_distiller/core/url_constants.h" 16cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)#include "components/dom_distiller/core/url_utils.h" 17cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)#include "content/public/browser/browser_context.h" 18cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)#include "content/public/browser/navigation_controller.h" 19cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)#include "content/public/browser/web_contents.h" 20cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)#include "content/public/browser/web_contents_observer.h" 21cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) 22cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)namespace { 23cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) 24cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)using dom_distiller::ViewRequestDelegate; 25cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)using dom_distiller::DistilledArticleProto; 26cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)using dom_distiller::ArticleDistillationUpdate; 27cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)using dom_distiller::ViewerHandle; 28cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)using dom_distiller::SourcePageHandleWebContents; 29cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)using dom_distiller::DomDistillerService; 30cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)using dom_distiller::DomDistillerServiceFactory; 31cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)using dom_distiller::DistillerPage; 32cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)using dom_distiller::SourcePageHandle; 33cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) 34cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)// An no-op ViewRequestDelegate which holds a ViewerHandle and deletes itself 35cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)// after the WebContents navigates or goes away. This class is a band-aid to 36cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)// keep a TaskTracker around until the distillation starts from the viewer. 37cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)class SelfDeletingRequestDelegate : public ViewRequestDelegate, 38cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) public content::WebContentsObserver { 39cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) public: 40cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) explicit SelfDeletingRequestDelegate(content::WebContents* web_contents); 41cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) virtual ~SelfDeletingRequestDelegate(); 42cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) 43cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) // ViewRequestDelegate implementation. 44cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) virtual void OnArticleReady( 45cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) const DistilledArticleProto* article_proto) OVERRIDE; 46cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) virtual void OnArticleUpdated( 47cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) ArticleDistillationUpdate article_update) OVERRIDE; 48cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) 49cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) // content::WebContentsObserver implementation. 50cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) virtual void DidNavigateMainFrame( 51cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) const content::LoadCommittedDetails& details, 52cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) const content::FrameNavigateParams& params) OVERRIDE; 53cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) virtual void RenderProcessGone(base::TerminationStatus status) OVERRIDE; 54cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) virtual void WebContentsDestroyed() OVERRIDE; 55cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) 56cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) // Takes ownership of the ViewerHandle to keep distillation alive until |this| 57cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) // is deleted. 58cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) void TakeViewerHandle(scoped_ptr<ViewerHandle> viewer_handle); 59cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) 60cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) private: 61cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) // The handle to the view request towards the DomDistillerService. It 62cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) // needs to be kept around to ensure the distillation request finishes. 63cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) scoped_ptr<ViewerHandle> viewer_handle_; 64cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)}; 65cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) 66cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)void SelfDeletingRequestDelegate::DidNavigateMainFrame( 67cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) const content::LoadCommittedDetails& details, 68cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) const content::FrameNavigateParams& params) { 69cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) base::MessageLoop::current()->DeleteSoon(FROM_HERE, this); 70cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)} 71cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) 72cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)void SelfDeletingRequestDelegate::RenderProcessGone( 73cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) base::TerminationStatus status) { 74cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) base::MessageLoop::current()->DeleteSoon(FROM_HERE, this); 75cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)} 76cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) 77cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)void SelfDeletingRequestDelegate::WebContentsDestroyed() { 78cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) base::MessageLoop::current()->DeleteSoon(FROM_HERE, this); 79cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)} 80cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) 81cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)SelfDeletingRequestDelegate::SelfDeletingRequestDelegate( 82cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) content::WebContents* web_contents) 83116680a4aac90f2aa7413d9095a592090648e557Ben Murdoch : WebContentsObserver(web_contents) { 84cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)} 85cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) 86cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)SelfDeletingRequestDelegate::~SelfDeletingRequestDelegate() { 87cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)} 88cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) 89cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)void SelfDeletingRequestDelegate::OnArticleReady( 90cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) const DistilledArticleProto* article_proto) { 91cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)} 92cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) 93cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)void SelfDeletingRequestDelegate::OnArticleUpdated( 94cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) ArticleDistillationUpdate article_update) { 95cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)} 96cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) 97cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)void SelfDeletingRequestDelegate::TakeViewerHandle( 98cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) scoped_ptr<ViewerHandle> viewer_handle) { 99cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) viewer_handle_ = viewer_handle.Pass(); 100cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)} 101cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) 102cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)// Start loading the viewer URL of the current page in |web_contents|. 103cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)void StartNavigationToDistillerViewer(content::WebContents* web_contents, 104cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) const GURL& url) { 105cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) GURL viewer_url = dom_distiller::url_utils::GetDistillerViewUrlFromUrl( 1065f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles) dom_distiller::kDomDistillerScheme, url); 107cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) content::NavigationController::LoadURLParams params(viewer_url); 1081320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci params.transition_type = ui::PAGE_TRANSITION_AUTO_BOOKMARK; 109cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) web_contents->GetController().LoadURLWithParams(params); 110cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)} 111cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) 112cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)void StartDistillation(content::WebContents* web_contents) { 113cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) // Start distillation using |web_contents|, and ensure ViewerHandle stays 114cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) // around until the viewer requests distillation. 115cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) SelfDeletingRequestDelegate* view_request_delegate = 116cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) new SelfDeletingRequestDelegate(web_contents); 117cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) scoped_ptr<content::WebContents> old_web_contents_sptr(web_contents); 118cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) scoped_ptr<SourcePageHandleWebContents> source_page_handle( 119cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) new SourcePageHandleWebContents(old_web_contents_sptr.Pass())); 120cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) DomDistillerService* dom_distiller_service = 121cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) DomDistillerServiceFactory::GetForBrowserContext( 122cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) web_contents->GetBrowserContext()); 123cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) scoped_ptr<DistillerPage> distiller_page = 124cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) dom_distiller_service->CreateDefaultDistillerPageWithHandle( 125cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) source_page_handle.PassAs<SourcePageHandle>()) 126cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) .Pass(); 127cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) 128cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) const GURL& last_committed_url = web_contents->GetLastCommittedURL(); 129cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) scoped_ptr<ViewerHandle> viewer_handle = dom_distiller_service->ViewUrl( 130cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) view_request_delegate, distiller_page.Pass(), last_committed_url); 131cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) view_request_delegate->TakeViewerHandle(viewer_handle.Pass()); 132cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)} 133cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) 134cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)} // namespace 135cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) 136cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)void DistillCurrentPageAndView(content::WebContents* old_web_contents) { 137cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) DCHECK(old_web_contents); 138cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) // Create new WebContents. 139cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) content::WebContents::CreateParams create_params( 140cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) old_web_contents->GetBrowserContext()); 141cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) content::WebContents* new_web_contents = 142cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) content::WebContents::Create(create_params); 143cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) DCHECK(new_web_contents); 144cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) 145cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) // Copy all navigation state from the old WebContents to the new one. 146cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) new_web_contents->GetController().CopyStateFrom( 147cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) old_web_contents->GetController()); 148cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) 1496e8cce623b6e4fe0c9e4af605d675dd9d0338c38Torne (Richard Coles) // StartNavigationToDistillerViewer must come before swapping the tab contents 1506e8cce623b6e4fe0c9e4af605d675dd9d0338c38Torne (Richard Coles) // to avoid triggering a reload of the page. This reloadmakes it very 1516e8cce623b6e4fe0c9e4af605d675dd9d0338c38Torne (Richard Coles) // difficult to distinguish between the intermediate reload and a user hitting 1526e8cce623b6e4fe0c9e4af605d675dd9d0338c38Torne (Richard Coles) // the back button. 1536e8cce623b6e4fe0c9e4af605d675dd9d0338c38Torne (Richard Coles) StartNavigationToDistillerViewer(new_web_contents, 1546e8cce623b6e4fe0c9e4af605d675dd9d0338c38Torne (Richard Coles) old_web_contents->GetLastCommittedURL()); 1556e8cce623b6e4fe0c9e4af605d675dd9d0338c38Torne (Richard Coles) 156cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) CoreTabHelper::FromWebContents(old_web_contents)->delegate()->SwapTabContents( 157cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) old_web_contents, new_web_contents, false, false); 158cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) 159cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) StartDistillation(old_web_contents); 160cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)} 161