content/public/browser/prerender_web_contents_delegate.cc

// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "content/public/browser/prerender_web_contents_delegate.h"

#include "content/browser/preloading/prerender/prerender_final_status.h"
#include "content/browser/preloading/prerender/prerender_host_registry.h"
#include "content/browser/web_contents/web_contents_impl.h"

namespace content {

WebContents* PrerenderWebContentsDelegate::OpenURLFromTab(
    WebContents* source,
    const OpenURLParams& params,
    base::OnceCallback<void(NavigationHandle&)> navigation_handle_callback) {
  NOTREACHED();
}

WebContents* PrerenderWebContentsDelegate::AddNewContents(
    WebContents* source,
    std::unique_ptr<WebContents> new_contents,
    const GURL& target_url,
    WindowOpenDisposition disposition,
    const blink::mojom::WindowFeatures& window_features,
    bool user_gesture,
    bool* was_blocked) {
  // A prerendered page cannot open a new window.
  NOTREACHED();
}

void PrerenderWebContentsDelegate::ActivateContents(WebContents* contents) {
  // WebContents should not be activated with this delegate.
  NOTREACHED();
}

void PrerenderWebContentsDelegate::LoadingStateChanged(
    WebContents* source,
    bool should_show_loading_ui) {
  // Loading events should be deferred until prerender activation.
  NOTREACHED();
}

void PrerenderWebContentsDelegate::CloseContents(WebContents* source) {
  // Cancelling prerendering will eventually destroy `this` and `source`.
  static_cast<WebContentsImpl*>(source)
      ->GetPrerenderHostRegistry()
      ->CancelAllHosts(PrerenderFinalStatus::kTabClosedWithoutUserGesture);
}

bool PrerenderWebContentsDelegate::ShouldSuppressDialogs(WebContents* source) {
  // Dialogs (JS dialogs and BeforeUnload confirm) should not be shown on a
  // prerendered page.
  NOTREACHED();
}

bool PrerenderWebContentsDelegate::ShouldFocusPageAfterCrash(
    WebContents* source) {
  // A prerendered page cannot be focused.
  return false;
}

bool PrerenderWebContentsDelegate::TakeFocus(WebContents* source,
                                             bool reverse) {
  // A prerendered page cannot be focused.
  return false;
}

void PrerenderWebContentsDelegate::WebContentsCreated(
    WebContents* source_contents,
    int opener_render_process_id,
    int opener_render_frame_id,
    const std::string& frame_name,
    const GURL& target_url,
    WebContents* new_contents) {
  // A prerendered page should not create a new WebContents.
  NOTREACHED();
}

bool PrerenderWebContentsDelegate::CanEnterFullscreenModeForTab(
    RenderFrameHost* requesting_frame) {
  // This should not be called for a prerendered page.
  NOTREACHED();
}

void PrerenderWebContentsDelegate::EnterFullscreenModeForTab(
    RenderFrameHost* requesting_frame,
    const blink::mojom::FullscreenOptions& options) {
  // This should not be called for a prerendered page.
  NOTREACHED();
}

void PrerenderWebContentsDelegate::FullscreenStateChangedForTab(
    RenderFrameHost* requesting_frame,
    const blink::mojom::FullscreenOptions& options) {
  // This should not be called for a prerendered page.
  NOTREACHED();
}

void PrerenderWebContentsDelegate::ExitFullscreenModeForTab(WebContents*) {
  // This should not be called for a prerendered page.
  NOTREACHED();
}

bool PrerenderWebContentsDelegate::IsFullscreenForTabOrPending(
    const WebContents* web_contents) {
  return false;
}

void PrerenderWebContentsDelegate::OnDidBlockNavigation(
    WebContents* web_contents,
    const GURL& blocked_url,
    blink::mojom::NavigationBlockedReason reason) {
  // DCHECK against LifecycleState in RenderFrameHostImpl::DidBlockNavigation()
  // ensures this is never called during prerendering.
  NOTREACHED();
}

bool PrerenderWebContentsDelegate::ShouldAllowRunningInsecureContent(
    WebContents* web_contents,
    bool allowed_per_prefs,
    const url::Origin& origin,
    const GURL& resource_url) {
  // MixedContentChecker::ShouldBlockNavigation() should cancel prerendering
  // for mixed contents before this is called.
  NOTREACHED();
}

PreloadingEligibility PrerenderWebContentsDelegate::IsPrerender2Supported(
    WebContents& web_contents,
    PreloadingTriggerType trigger_type) {
  // This should be checked in the initiator's WebContents.
  NOTREACHED();
}

}  // namespace content