15821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Copyright (c) 2012 The Chromium Authors. All rights reserved. 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Use of this source code is governed by a BSD-style license that can be 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// found in the LICENSE file. 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 55821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "content/public/browser/web_contents_observer.h" 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "content/browser/web_contents/web_contents_impl.h" 85821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "content/public/browser/navigation_details.h" 95821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "content/public/browser/render_view_host.h" 105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace content { 125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)WebContentsObserver::WebContentsObserver(WebContents* web_contents) 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) : web_contents_(NULL) { 155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Observe(web_contents); 165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)WebContentsObserver::WebContentsObserver() 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) : web_contents_(NULL) { 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)WebContentsObserver::~WebContentsObserver() { 235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (web_contents_) 245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) web_contents_->RemoveObserver(this); 255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)WebContents* WebContentsObserver::web_contents() const { 285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return web_contents_; 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void WebContentsObserver::Observe(WebContents* web_contents) { 321e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) if (web_contents == web_contents_) { 331e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) // Early exit to avoid infinite loops if we're in the middle of a callback. 341e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) return; 351e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) } 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (web_contents_) 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) web_contents_->RemoveObserver(this); 385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) web_contents_ = static_cast<WebContentsImpl*>(web_contents); 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (web_contents_) { 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) web_contents_->AddObserver(this); 415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool WebContentsObserver::OnMessageReceived(const IPC::Message& message) { 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool WebContentsObserver::Send(IPC::Message* message) { 495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!web_contents_) { 505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) delete message; 515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return web_contents_->Send(message); 555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)int WebContentsObserver::routing_id() const { 585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!web_contents_) 595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return MSG_ROUTING_NONE; 605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return web_contents_->GetRoutingID(); 625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void WebContentsObserver::WebContentsImplDestroyed() { 655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Do cleanup so that 'this' can safely be deleted from WebContentsDestroyed. 665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) web_contents_->RemoveObserver(this); 675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) WebContentsImpl* contents = web_contents_; 685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) web_contents_ = NULL; 695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) WebContentsDestroyed(contents); 705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace content 73