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// Copyright 2022 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/ui/web_applications/tabbed_web_app_navigation_throttle.h"
#include "chrome/browser/ui/browser.h"
#include "chrome/browser/ui/browser_finder.h"
#include "chrome/browser/ui/tabs/tab_strip_model.h"
#include "chrome/browser/ui/web_applications/app_browser_controller.h"
#include "chrome/browser/ui/web_applications/web_app_tabbed_utils.h"
#include "chrome/browser/web_applications/web_app_provider.h"
#include "chrome/browser/web_applications/web_app_registrar.h"
#include "chrome/browser/web_applications/web_app_tab_helper.h"
#include "components/webapps/common/web_app_id.h"
#include "content/public/browser/navigation_handle.h"
#include "content/public/browser/page_navigator.h"
#include "content/public/browser/web_contents.h"
#include "url/gurl.h"
namespace web_app {
TabbedWebAppNavigationThrottle::TabbedWebAppNavigationThrottle(
content::NavigationThrottleRegistry& registry)
: content::NavigationThrottle(registry) {}
TabbedWebAppNavigationThrottle::~TabbedWebAppNavigationThrottle() = default;
const char* TabbedWebAppNavigationThrottle::GetNameForLogging() {
return "TabbedWebAppNavigationThrottle";
}
// static
void TabbedWebAppNavigationThrottle::MaybeCreateAndAdd(
content::NavigationThrottleRegistry& registry) {
content::NavigationHandle& handle = registry.GetNavigationHandle();
if (!handle.IsInPrimaryMainFrame()) {
return;
}
// Reloading the page should not cause the tab to change.
if (handle.GetReloadType() != content::ReloadType::NONE) {
return;
}
content::WebContents* web_contents = handle.GetWebContents();
Browser* browser = chrome::FindBrowserWithTab(web_contents);
if (!browser || !browser->app_controller()) {
return;
}
WebAppProvider* provider = WebAppProvider::GetForWebContents(web_contents);
if (!provider) {
return;
}
const webapps::AppId& app_id = browser->app_controller()->app_id();
std::optional<GURL> home_tab_url =
provider->registrar_unsafe().GetAppPinnedHomeTabUrl(app_id);
// Only create the throttle for tabbed web apps that have a home tab.
if (WebAppTabHelper::GetAppId(web_contents) &&
provider->registrar_unsafe().IsTabbedWindowModeEnabled(app_id) &&
home_tab_url.has_value()) {
registry.AddThrottle(
std::make_unique<TabbedWebAppNavigationThrottle>(registry));
}
}
content::NavigationThrottle::ThrottleCheckResult
TabbedWebAppNavigationThrottle::WillStartRequest() {
content::WebContents* web_contents = navigation_handle()->GetWebContents();
WebAppProvider* provider = WebAppProvider::GetForWebContents(web_contents);
DCHECK(provider);
Browser* browser = chrome::FindBrowserWithTab(web_contents);
DCHECK(browser);
web_app::AppBrowserController* app_controller = browser->app_controller();
DCHECK(app_controller);
const webapps::AppId& app_id = app_controller->app_id();
std::optional<GURL> home_tab_url =
provider->registrar_unsafe().GetAppPinnedHomeTabUrl(app_id);
DCHECK(home_tab_url.has_value());
auto* tab_helper = WebAppTabHelper::FromWebContents(web_contents);
DCHECK(tab_helper);
bool navigating_from_home_tab = tab_helper->is_pinned_home_tab();
bool navigation_url_is_home_url =
app_controller->IsUrlInHomeTabScope(navigation_handle()->GetURL());
// Navigations from the home tab to another URL should open in a new tab.
if (navigating_from_home_tab && !navigation_url_is_home_url) {
return OpenInNewTab();
}
// Navigations to the home tab URL should open in the home tab.
if (!navigating_from_home_tab && navigation_url_is_home_url) {
// target=_blank links to the home tab cause a blank tab to be opened. We
// should close it.
if (browser->tab_strip_model()->count() > 1 &&
!web_contents->GetLastCommittedURL().is_valid()) {
web_contents->ClosePage();
}
return FocusHomeTab();
}
return content::NavigationThrottle::PROCEED;
}
content::NavigationThrottle::ThrottleCheckResult
TabbedWebAppNavigationThrottle::WillRedirectRequest() {
// TODO(crbug.com/400761084): Figure out how redirects should be handled.
return content::NavigationThrottle::PROCEED;
}
content::NavigationThrottle::ThrottleCheckResult
TabbedWebAppNavigationThrottle::OpenInNewTab() {
content::OpenURLParams params =
content::OpenURLParams::FromNavigationHandle(navigation_handle());
params.disposition = WindowOpenDisposition::NEW_FOREGROUND_TAB;
// Clear the FrameTreeNode id, as the new navigation will be in a new tab
// rather than the frame of the original navigation.
params.frame_tree_node_id = content::FrameTreeNodeId();
navigation_handle()->GetWebContents()->OpenURL(
std::move(params), /*navigation_handle_callback=*/{});
return content::NavigationThrottle::CANCEL_AND_IGNORE;
}
content::NavigationThrottle::ThrottleCheckResult
TabbedWebAppNavigationThrottle::FocusHomeTab() {
Browser* browser =
chrome::FindBrowserWithTab(navigation_handle()->GetWebContents());
TabStripModel* tab_strip = browser->tab_strip_model();
content::OpenURLParams params =
content::OpenURLParams::FromNavigationHandle(navigation_handle());
params.disposition = WindowOpenDisposition::CURRENT_TAB;
params.frame_tree_node_id = content::FrameTreeNodeId();
if (params.url != tab_strip->GetWebContentsAt(0)->GetLastCommittedURL()) {
// Only do the navigation if the URL has changed.
tab_strip->GetWebContentsAt(0)->OpenURL(std::move(params),
/*navigation_handle_callback=*/{});
}
tab_strip->ActivateTabAt(0);
return content::NavigationThrottle::CANCEL_AND_IGNORE;
}
} // namespace web_app
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