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// Copyright (c) 2011 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.
#include "content/public/browser/web_contents_observer.h"
#include "content/browser/renderer_host/render_view_host.h"
#include "content/browser/tab_contents/tab_contents.h"
#include "content/public/browser/navigation_details.h"
namespace content {
WebContentsObserver::WebContentsObserver(WebContents* web_contents)
: tab_contents_(NULL) {
Observe(web_contents);
}
WebContentsObserver::WebContentsObserver()
: tab_contents_(NULL) {
}
WebContentsObserver::~WebContentsObserver() {
if (tab_contents_)
tab_contents_->RemoveObserver(this);
}
WebContents* WebContentsObserver::web_contents() const {
return tab_contents_;
}
void WebContentsObserver::Observe(WebContents* web_contents) {
if (tab_contents_)
tab_contents_->RemoveObserver(this);
tab_contents_ = static_cast<TabContents*>(web_contents);
if (tab_contents_) {
tab_contents_->AddObserver(this);
}
}
bool WebContentsObserver::OnMessageReceived(const IPC::Message& message) {
return false;
}
bool WebContentsObserver::Send(IPC::Message* message) {
if (!tab_contents_ || !tab_contents_->GetRenderViewHost()) {
delete message;
return false;
}
return tab_contents_->GetRenderViewHost()->Send(message);
}
int WebContentsObserver::routing_id() const {
if (!tab_contents_ || !tab_contents_->GetRenderViewHost())
return MSG_ROUTING_NONE;
return tab_contents_->GetRenderViewHost()->routing_id();
}
void WebContentsObserver::TabContentsDestroyed() {
// Do cleanup so that 'this' can safely be deleted from WebContentsDestroyed.
tab_contents_->RemoveObserver(this);
TabContents* tab = tab_contents_;
tab_contents_ = NULL;
WebContentsDestroyed(tab);
}
} // namespace content
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