// 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/side_panel/side_panel_web_ui_view.h"

#include "base/metrics/user_metrics.h"
#include "base/metrics/user_metrics_action.h"
#include "chrome/browser/extensions/api/bookmark_manager_private/bookmark_manager_private_api.h"
#include "chrome/browser/feature_engagement/tracker_factory.h"
#include "chrome/browser/performance_manager/public/side_panel_loading_policy.h"
#include "chrome/browser/ui/bookmarks/bookmark_utils.h"
#include "chrome/browser/ui/browser_window.h"
#include "chrome/browser/ui/browser_window/public/browser_window_interface.h"
#include "chrome/browser/ui/side_panel/side_panel_content_proxy.h"
#include "chrome/browser/ui/side_panel/side_panel_entry_scope.h"
#include "chrome/browser/ui/side_panel/side_panel_util.h"
#include "chrome/browser/ui/views/frame/browser_view.h"
#include "chrome/browser/ui/webui/webui_embedding_context.h"
#include "chrome/common/webui_url_constants.h"
#include "components/feature_engagement/public/feature_constants.h"
#include "components/feature_engagement/public/tracker.h"
#include "extensions/buildflags/buildflags.h"
#include "ui/base/metadata/metadata_impl_macros.h"
#include "ui/base/mojom/menu_source_type.mojom.h"
#include "ui/views/controls/menu/menu_runner.h"

#if BUILDFLAG(ENABLE_EXTENSIONS_CORE)
#include "chrome/browser/extensions/side_panel_helper.h"
#endif

SidePanelWebUIView::SidePanelWebUIView(SidePanelEntryScope& scope,
                                       base::RepeatingClosure on_show_cb,
                                       base::RepeatingClosure close_cb,
                                       WebUIContentsWrapper* contents_wrapper)
    : on_show_cb_(std::move(on_show_cb)), close_cb_(std::move(close_cb)) {
  const bool is_ready_to_show = contents_wrapper->is_ready_to_show();
  SidePanelUtil::GetSidePanelContentProxy(this)->SetAvailable(is_ready_to_show);
  SetVisible(is_ready_to_show);
  SetID(kSidePanelWebViewId);
  contents_wrapper->SetHost(weak_factory_.GetWeakPtr());
  SetWebContents(contents_wrapper->web_contents());
  CHECK_EQ(contents_wrapper->web_contents(), web_contents());

  // The mechanism that ensure the Side Panel will load at high priority even
  // while it is still not visible requires the WebContents to be tagged.
  performance_manager::execution_context_priority::MarkAsSidePanel(
      contents_wrapper->web_contents());

  // For per-window side panels the scoped browser does not change. The browser
  // is cleared automatically when the browser is closed.
  if (scope.get_scope_type() == SidePanelEntryScope::ScopeType::kBrowser) {
    webui::SetBrowserWindowInterface(contents_wrapper->web_contents(),
                                     &scope.GetBrowserWindowInterface());
  } else if (scope.get_scope_type() == SidePanelEntryScope::ScopeType::kTab) {
    webui::SetTabInterface(contents_wrapper->web_contents(),
                           &scope.GetTabInterface());
    // TODO(crbug.com/371950942): Once the new discard implementation has landed
    // there is no need to re-set the interface on discard and this can be
    // removed.
    tab_will_discard_subscription_ =
        scope.GetTabInterface().RegisterWillDiscardContents(base::BindRepeating(
            [](tabs::TabInterface* tab, content::WebContents* old_contents,
               content::WebContents* new_contents) {
              webui::SetTabInterface(new_contents, tab);
            }));
  }

#if BUILDFLAG(ENABLE_EXTENSIONS_CORE)
  // We may still need to retrieve relevant information about the current
  // `BrowserWindowInterface` from the extensions API. For example, by tabs API
  // `chrome.tabs.query({currentWindow: true})`. This information is provided
  // via `SidePanelHelper`.
  extensions::SidePanelHelper::CreateForWebContents(
      contents_wrapper->web_contents());
#endif
}

SidePanelWebUIView::~SidePanelWebUIView() = default;

void SidePanelWebUIView::ViewHierarchyChanged(
    const views::ViewHierarchyChangedDetails& details) {
  WebView::ViewHierarchyChanged(details);
  // Ensure the WebContents is in a visible state after being added to the
  // side panel so the correct lifecycle hooks are triggered.
  if (details.is_add && details.child == this) {
    web_contents()->WasShown();
  }
}

void SidePanelWebUIView::ShowUI() {
  SetVisible(true);
  SidePanelUtil::GetSidePanelContentProxy(this)->SetAvailable(true);
  if (on_show_cb_) {
    on_show_cb_.Run();
  }
}

void SidePanelWebUIView::CloseUI() {
  if (close_cb_) {
    close_cb_.Run();
  }
}

void SidePanelWebUIView::ShowCustomContextMenu(
    gfx::Point point,
    std::unique_ptr<ui::MenuModel> menu_model) {
  ConvertPointToScreen(this, &point);
  context_menu_model_ = std::move(menu_model);
  context_menu_runner_ = std::make_unique<views::MenuRunner>(
      context_menu_model_.get(),
      views::MenuRunner::HAS_MNEMONICS | views::MenuRunner::CONTEXT_MENU);
  context_menu_runner_->RunMenuAt(
      GetWidget(), nullptr, gfx::Rect(point, gfx::Size()),
      views::MenuAnchorPosition::kTopLeft, ui::mojom::MenuSourceType::kMouse,
      web_contents()->GetContentNativeView());
}

void SidePanelWebUIView::HideCustomContextMenu() {
  if (context_menu_runner_) {
    context_menu_runner_->Cancel();
  }
}

bool SidePanelWebUIView::HandleKeyboardEvent(
    content::WebContents* source,
    const input::NativeWebKeyboardEvent& event) {
  return unhandled_keyboard_event_handler_.HandleKeyboardEvent(
      event, GetFocusManager());
}

BEGIN_METADATA(SidePanelWebUIView)
END_METADATA