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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/views/page_info/web_view_side_panel_view.h"
#include <string_view>
#include "base/task/single_thread_task_runner.h"
#include "chrome/browser/page_info/web_view_side_panel_throttle.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/ui/browser_finder.h"
#include "chrome/browser/ui/color/chrome_color_id.h"
#include "chrome/browser/ui/views/frame/browser_view.h"
#include "content/public/browser/browser_context.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/navigation_handle.h"
#include "content/public/browser/page_navigator.h"
#include "content/public/browser/web_contents.h"
#include "content/public/common/referrer.h"
#include "net/base/url_util.h"
#include "third_party/blink/public/common/loader/loader_constants.h"
#include "ui/base/window_open_disposition.h"
#include "ui/views/accessibility/view_accessibility.h"
#include "ui/views/layout/flex_layout_types.h"
#include "ui/views/layout/flex_layout_view.h"
#include "url/gurl.h"
#include "url/origin.h"
namespace {
std::unique_ptr<views::WebView> CreateWebView(
views::View* host,
content::BrowserContext* browser_context) {
auto web_view = std::make_unique<views::WebView>(browser_context);
// Set a flex behavior for the WebView to always fill out the extra space in
// the parent view. In the minimum case, it will scale down to 0.
web_view->SetProperty(
views::kFlexBehaviorKey,
views::FlexSpecification(views::MinimumFlexSizeRule::kScaleToZero,
views::MaximumFlexSizeRule::kUnbounded));
// Set background of webview to the same background as the toolbar. This is to
// prevent personal color themes from showing in the side panel when
// navigating to a new results panel.
web_view->SetBackground(views::CreateSolidBackground(kColorToolbar));
return web_view;
}
} // namespace
WebViewSidePanelView::WebViewSidePanelView(
content::WebContents* parent_web_contents,
const std::string& loading_screen_url,
const std::optional<std::string>& param_name_to_cleanup)
: parent_web_contents_(parent_web_contents->GetWeakPtr()),
param_name_to_cleanup_(param_name_to_cleanup) {
auto* browser_context = outer_browser_view()->GetProfile();
// Allow view to be focusable in order to receive focus when side panel is
// opened.
SetFocusBehavior(FocusBehavior::ALWAYS);
// Align views vertically top to bottom.
SetOrientation(views::LayoutOrientation::kVertical);
SetMainAxisAlignment(views::LayoutAlignment::kStart);
// Stretch views to fill horizontal bounds.
SetCrossAxisAlignment(views::LayoutAlignment::kStretch);
loading_indicator_web_view_ =
AddChildView(CreateWebView(this, browser_context));
loading_indicator_web_view_->GetWebContents()->GetController().LoadURL(
GURL(loading_screen_url), content::Referrer(),
ui::PAGE_TRANSITION_FROM_API, std::string());
web_view_ = AddChildView(CreateWebView(this, browser_context));
SetContentVisible(false);
auto* web_contents = web_view_->GetWebContents();
web_contents->SetDelegate(this);
web_contents->SetUserData(
kWebViewSidePanelWebContentsUserDataKey,
std::make_unique<WebViewSidePanelWebContentsUserData>(AsWeakPtr()));
Observe(web_contents);
GetViewAccessibility().SetRole(ax::mojom::Role::kWebView);
GetViewAccessibility().SetName(
std::u16string(), ax::mojom::NameFrom::kAttributeExplicitlyEmpty);
}
void WebViewSidePanelView::LoadProgressChanged(double progress) {
// Ignore the initial load progress since the navigation might be intercepted
// by WebViewSidePanelThrottle.
if (progress == blink::kInitialLoadProgress) {
return;
}
SetContentVisible(progress == blink::kFinalLoadProgress);
}
void WebViewSidePanelView::OpenUrl(const content::OpenURLParams& params) {
last_url_ = params.url;
web_view_->GetWebContents()->GetController().LoadURLWithParams(
content::NavigationController::LoadURLParams(params));
}
GURL WebViewSidePanelView::GetLastUrlForTesting() {
return last_url_;
}
// This method is called when the WebContents wants to open a link in a new
// tab. This delegate does not override AddNewContents(), so the webcontents
// is not actually created. Instead it forwards the parameters to the real
// browser.
void WebViewSidePanelView::DidOpenRequestedURL(
content::WebContents* new_contents,
content::RenderFrameHost* source_render_frame_host,
const GURL& url,
const content::Referrer& referrer,
WindowOpenDisposition disposition,
ui::PageTransition transition,
bool started_from_context_menu,
bool renderer_initiated) {
content::OpenURLParams params(url, referrer, disposition, transition,
renderer_initiated);
// If the navigation is initiated by the renderer process, we must set an
// initiator origin.
if (renderer_initiated) {
params.initiator_origin = url::Origin::Create(url);
}
// We can't open a new tab while the observer is running because it might
// destroy this WebContents. Post as task instead.
base::SingleThreadTaskRunner::GetCurrentDefault()->PostTask(
FROM_HERE, base::BindOnce(&WebViewSidePanelView::OpenUrlInBrowser,
AsWeakPtr(), std::move(params)));
}
// This function is called when the user opens a link in a new tab or window
// e.g. from the context menu or by middle-clicking on it. It forwards the
// params to the main browser and does not create a WebContents in the
// SidePanel.
content::WebContents* WebViewSidePanelView::OpenURLFromTab(
content::WebContents* source,
const content::OpenURLParams& params,
base::OnceCallback<void(content::NavigationHandle&)>
navigation_handle_callback) {
// Redirect requests to open a new tab to the main browser. These come e.g.
// from the context menu.
content::OpenURLParams new_params(params);
new_params.url = CleanUpQueryParams(params.url);
if (auto* delegate = outer_delegate()) {
delegate->OpenURLFromTab(source, new_params,
std::move(navigation_handle_callback));
}
return nullptr;
}
bool WebViewSidePanelView::HandleKeyboardEvent(
content::WebContents* source,
const input::NativeWebKeyboardEvent& event) {
// Redirect keyboard events to the main browser.
if (auto* delegate = outer_delegate()) {
return delegate->HandleKeyboardEvent(source, event);
}
return false;
}
BrowserView* WebViewSidePanelView::outer_browser_view() {
if (parent_web_contents_) {
auto* browser = chrome::FindBrowserWithTab(parent_web_contents_.get());
return browser ? BrowserView::GetBrowserViewForBrowser(browser) : nullptr;
}
return nullptr;
}
content::WebContentsDelegate* WebViewSidePanelView::outer_delegate() {
auto* browser_view = outer_browser_view();
return browser_view ? browser_view->browser() : nullptr;
}
void WebViewSidePanelView::OpenUrlInBrowser(
const content::OpenURLParams& params) {
DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
if (auto* browser_view = outer_browser_view()) {
content::OpenURLParams new_params(params);
new_params.url = CleanUpQueryParams(params.url);
browser_view->browser()->OpenURL(new_params,
/*navigation_handle_callback=*/{});
}
}
GURL WebViewSidePanelView::CleanUpQueryParams(const GURL& url) {
// Override eventual parameter for navigations to a real tab.
if (url::IsSameOriginWith(url, last_url_) &&
param_name_to_cleanup_.has_value() &&
url.query_piece().find(param_name_to_cleanup_.value()) !=
std::string_view::npos) {
return net::AppendOrReplaceQueryParameter(
url, param_name_to_cleanup_.value(), std::string());
}
return url;
}
void WebViewSidePanelView::SetContentVisible(bool visible) {
web_view_->SetVisible(visible);
loading_indicator_web_view_->SetVisible(!visible);
}
WebViewSidePanelView::~WebViewSidePanelView() = default;
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