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// Copyright (c) 2012 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.
// Implements the Chrome Extensions WebNavigation API.
#include "chrome/browser/extensions/api/web_navigation/web_navigation_api_helpers.h"
#include "base/json/json_writer.h"
#include "base/strings/string_number_conversions.h"
#include "base/time/time.h"
#include "base/values.h"
#include "chrome/browser/extensions/api/web_navigation/web_navigation_api_constants.h"
#include "chrome/browser/extensions/extension_tab_util.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/common/extensions/api/web_navigation.h"
#include "content/public/browser/render_frame_host.h"
#include "content/public/browser/render_process_host.h"
#include "content/public/browser/render_view_host.h"
#include "content/public/browser/web_contents.h"
#include "extensions/browser/event_router.h"
#include "extensions/common/event_filtering_info.h"
#include "net/base/net_errors.h"
#include "ui/base/page_transition_types.h"
namespace extensions {
namespace keys = web_navigation_api_constants;
namespace web_navigation = api::web_navigation;
namespace web_navigation_api_helpers {
namespace {
// Returns |time| as milliseconds since the epoch.
double MilliSecondsFromTime(const base::Time& time) {
return 1000 * time.ToDoubleT();
}
// Dispatches events to the extension message service.
void DispatchEvent(content::BrowserContext* browser_context,
const std::string& event_name,
scoped_ptr<base::ListValue> args,
const GURL& url) {
EventFilteringInfo info;
info.SetURL(url);
Profile* profile = Profile::FromBrowserContext(browser_context);
EventRouter* event_router = EventRouter::Get(profile);
if (profile && event_router) {
scoped_ptr<Event> event(new Event(event_name, args.Pass()));
event->restrict_to_browser_context = profile;
event->filter_info = info;
event_router->BroadcastEvent(event.Pass());
}
}
} // namespace
int GetFrameId(content::RenderFrameHost* frame_host) {
if (!frame_host)
return -1;
return !frame_host->GetParent() ? 0 : frame_host->GetRoutingID();
}
// Constructs and dispatches an onBeforeNavigate event.
// TODO(dcheng): Is the parent process ID needed here? http://crbug.com/393640
// Collisions are probably possible... but maybe this won't ever happen because
// of the SiteInstance grouping policies.
void DispatchOnBeforeNavigate(content::WebContents* web_contents,
content::RenderFrameHost* frame_host,
const GURL& validated_url) {
scoped_ptr<base::ListValue> args(new base::ListValue());
base::DictionaryValue* dict = new base::DictionaryValue();
dict->SetInteger(keys::kTabIdKey, ExtensionTabUtil::GetTabId(web_contents));
dict->SetString(keys::kUrlKey, validated_url.spec());
dict->SetInteger(keys::kProcessIdKey, frame_host->GetProcess()->GetID());
dict->SetInteger(keys::kFrameIdKey, GetFrameId(frame_host));
dict->SetInteger(keys::kParentFrameIdKey,
GetFrameId(frame_host->GetParent()));
dict->SetDouble(keys::kTimeStampKey, MilliSecondsFromTime(base::Time::Now()));
args->Append(dict);
DispatchEvent(web_contents->GetBrowserContext(),
web_navigation::OnBeforeNavigate::kEventName,
args.Pass(),
validated_url);
}
// Constructs and dispatches an onCommitted or onReferenceFragmentUpdated
// event.
void DispatchOnCommitted(const std::string& event_name,
content::WebContents* web_contents,
content::RenderFrameHost* frame_host,
const GURL& url,
ui::PageTransition transition_type) {
scoped_ptr<base::ListValue> args(new base::ListValue());
base::DictionaryValue* dict = new base::DictionaryValue();
dict->SetInteger(keys::kTabIdKey, ExtensionTabUtil::GetTabId(web_contents));
dict->SetString(keys::kUrlKey, url.spec());
dict->SetInteger(keys::kProcessIdKey, frame_host->GetProcess()->GetID());
dict->SetInteger(keys::kFrameIdKey, GetFrameId(frame_host));
std::string transition_type_string =
ui::PageTransitionGetCoreTransitionString(transition_type);
// For webNavigation API backward compatibility, keep "start_page" even after
// renamed to "auto_toplevel".
if (ui::PageTransitionStripQualifier(transition_type) ==
ui::PAGE_TRANSITION_AUTO_TOPLEVEL)
transition_type_string = "start_page";
dict->SetString(keys::kTransitionTypeKey, transition_type_string);
base::ListValue* qualifiers = new base::ListValue();
if (transition_type & ui::PAGE_TRANSITION_CLIENT_REDIRECT)
qualifiers->Append(new base::StringValue("client_redirect"));
if (transition_type & ui::PAGE_TRANSITION_SERVER_REDIRECT)
qualifiers->Append(new base::StringValue("server_redirect"));
if (transition_type & ui::PAGE_TRANSITION_FORWARD_BACK)
qualifiers->Append(new base::StringValue("forward_back"));
if (transition_type & ui::PAGE_TRANSITION_FROM_ADDRESS_BAR)
qualifiers->Append(new base::StringValue("from_address_bar"));
dict->Set(keys::kTransitionQualifiersKey, qualifiers);
dict->SetDouble(keys::kTimeStampKey, MilliSecondsFromTime(base::Time::Now()));
args->Append(dict);
DispatchEvent(web_contents->GetBrowserContext(), event_name, args.Pass(),
url);
}
// Constructs and dispatches an onDOMContentLoaded event.
void DispatchOnDOMContentLoaded(content::WebContents* web_contents,
content::RenderFrameHost* frame_host,
const GURL& url) {
scoped_ptr<base::ListValue> args(new base::ListValue());
base::DictionaryValue* dict = new base::DictionaryValue();
dict->SetInteger(keys::kTabIdKey,
ExtensionTabUtil::GetTabId(web_contents));
dict->SetString(keys::kUrlKey, url.spec());
dict->SetInteger(keys::kProcessIdKey, frame_host->GetProcess()->GetID());
dict->SetInteger(keys::kFrameIdKey, GetFrameId(frame_host));
dict->SetDouble(keys::kTimeStampKey, MilliSecondsFromTime(base::Time::Now()));
args->Append(dict);
DispatchEvent(web_contents->GetBrowserContext(),
web_navigation::OnDOMContentLoaded::kEventName,
args.Pass(),
url);
}
// Constructs and dispatches an onCompleted event.
void DispatchOnCompleted(content::WebContents* web_contents,
content::RenderFrameHost* frame_host,
const GURL& url) {
scoped_ptr<base::ListValue> args(new base::ListValue());
base::DictionaryValue* dict = new base::DictionaryValue();
dict->SetInteger(keys::kTabIdKey,
ExtensionTabUtil::GetTabId(web_contents));
dict->SetString(keys::kUrlKey, url.spec());
dict->SetInteger(keys::kProcessIdKey, frame_host->GetProcess()->GetID());
dict->SetInteger(keys::kFrameIdKey, GetFrameId(frame_host));
dict->SetDouble(keys::kTimeStampKey, MilliSecondsFromTime(base::Time::Now()));
args->Append(dict);
DispatchEvent(web_contents->GetBrowserContext(),
web_navigation::OnCompleted::kEventName,
args.Pass(), url);
}
// Constructs and dispatches an onCreatedNavigationTarget event.
void DispatchOnCreatedNavigationTarget(
content::WebContents* web_contents,
content::BrowserContext* browser_context,
content::RenderFrameHost* source_frame_host,
content::WebContents* target_web_contents,
const GURL& target_url) {
// Check that the tab is already inserted into a tab strip model. This code
// path is exercised by ExtensionApiTest.WebNavigationRequestOpenTab.
DCHECK(ExtensionTabUtil::GetTabById(
ExtensionTabUtil::GetTabId(target_web_contents),
Profile::FromBrowserContext(target_web_contents->GetBrowserContext()),
false, NULL, NULL, NULL, NULL));
scoped_ptr<base::ListValue> args(new base::ListValue());
base::DictionaryValue* dict = new base::DictionaryValue();
dict->SetInteger(keys::kSourceTabIdKey,
ExtensionTabUtil::GetTabId(web_contents));
dict->SetInteger(keys::kSourceProcessIdKey,
source_frame_host->GetProcess()->GetID());
dict->SetInteger(keys::kSourceFrameIdKey, GetFrameId(source_frame_host));
dict->SetString(keys::kUrlKey, target_url.possibly_invalid_spec());
dict->SetInteger(keys::kTabIdKey,
ExtensionTabUtil::GetTabId(target_web_contents));
dict->SetDouble(keys::kTimeStampKey, MilliSecondsFromTime(base::Time::Now()));
args->Append(dict);
DispatchEvent(browser_context,
web_navigation::OnCreatedNavigationTarget::kEventName,
args.Pass(),
target_url);
}
// Constructs and dispatches an onErrorOccurred event.
void DispatchOnErrorOccurred(content::WebContents* web_contents,
content::RenderFrameHost* frame_host,
const GURL& url,
int error_code) {
scoped_ptr<base::ListValue> args(new base::ListValue());
base::DictionaryValue* dict = new base::DictionaryValue();
dict->SetInteger(keys::kTabIdKey, ExtensionTabUtil::GetTabId(web_contents));
dict->SetString(keys::kUrlKey, url.spec());
dict->SetInteger(keys::kProcessIdKey, frame_host->GetProcess()->GetID());
dict->SetInteger(keys::kFrameIdKey, GetFrameId(frame_host));
dict->SetString(keys::kErrorKey, net::ErrorToString(error_code));
dict->SetDouble(keys::kTimeStampKey,
MilliSecondsFromTime(base::Time::Now()));
args->Append(dict);
DispatchEvent(web_contents->GetBrowserContext(),
web_navigation::OnErrorOccurred::kEventName,
args.Pass(), url);
}
// Constructs and dispatches an onTabReplaced event.
void DispatchOnTabReplaced(
content::WebContents* old_web_contents,
content::BrowserContext* browser_context,
content::WebContents* new_web_contents) {
scoped_ptr<base::ListValue> args(new base::ListValue());
base::DictionaryValue* dict = new base::DictionaryValue();
dict->SetInteger(keys::kReplacedTabIdKey,
ExtensionTabUtil::GetTabId(old_web_contents));
dict->SetInteger(
keys::kTabIdKey,
ExtensionTabUtil::GetTabId(new_web_contents));
dict->SetDouble(keys::kTimeStampKey, MilliSecondsFromTime(base::Time::Now()));
args->Append(dict);
DispatchEvent(browser_context,
web_navigation::OnTabReplaced::kEventName,
args.Pass(),
GURL());
}
} // namespace web_navigation_api_helpers
} // namespace extensions
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