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// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/web_modal/web_contents_modal_dialog_manager.h"
#include <utility>
#include "base/check.h"
#include "base/ranges/algorithm.h"
#include "components/back_forward_cache/back_forward_cache_disable.h"
#include "components/web_modal/web_contents_modal_dialog_manager_delegate.h"
#include "content/public/browser/back_forward_cache.h"
#include "content/public/browser/navigation_handle.h"
#include "content/public/browser/web_contents.h"
#include "net/base/registry_controlled_domains/registry_controlled_domain.h"
using content::WebContents;
namespace web_modal {
WebContentsModalDialogManager::~WebContentsModalDialogManager() {
DCHECK(child_dialogs_.empty());
}
void WebContentsModalDialogManager::SetDelegate(
WebContentsModalDialogManagerDelegate* d) {
delegate_ = d;
for (const auto& dialog : child_dialogs_) {
// Delegate can be null on Views/Win32 during tab drag.
dialog.manager->HostChanged(d ? d->GetWebContentsModalDialogHost()
: nullptr);
}
}
// TODO(gbillock): Maybe "ShowBubbleWithManager"?
void WebContentsModalDialogManager::ShowDialogWithManager(
gfx::NativeWindow dialog,
std::unique_ptr<SingleWebContentsDialogManager> manager) {
if (delegate_)
manager->HostChanged(delegate_->GetWebContentsModalDialogHost());
child_dialogs_.emplace_back(dialog, std::move(manager));
if (child_dialogs_.size() == 1) {
BlockWebContentsInteraction(true);
if (delegate_ && delegate_->IsWebContentsVisible(web_contents()))
child_dialogs_.back().manager->Show();
}
}
bool WebContentsModalDialogManager::IsDialogActive() const {
return !child_dialogs_.empty();
}
void WebContentsModalDialogManager::FocusTopmostDialog() const {
DCHECK(!child_dialogs_.empty());
child_dialogs_.front().manager->Focus();
}
content::WebContents* WebContentsModalDialogManager::GetWebContents() const {
return web_contents();
}
void WebContentsModalDialogManager::WillClose(gfx::NativeWindow dialog) {
auto dlg = base::ranges::find(child_dialogs_, dialog, &DialogState::dialog);
// The Views tab contents modal dialog calls WillClose twice. Ignore the
// second invocation.
if (dlg == child_dialogs_.end())
return;
bool removed_topmost_dialog = dlg == child_dialogs_.begin();
child_dialogs_.erase(dlg);
if (!closing_all_dialogs_ &&
(!child_dialogs_.empty() && removed_topmost_dialog) &&
(delegate_ && delegate_->IsWebContentsVisible(web_contents()))) {
child_dialogs_.front().manager->Show();
}
BlockWebContentsInteraction(!child_dialogs_.empty());
}
WebContentsModalDialogManager::WebContentsModalDialogManager(
content::WebContents* web_contents)
: content::WebContentsObserver(web_contents),
content::WebContentsUserData<WebContentsModalDialogManager>(
*web_contents),
web_contents_is_hidden_(web_contents->GetVisibility() ==
content::Visibility::HIDDEN) {}
WebContentsModalDialogManager::DialogState::DialogState(
gfx::NativeWindow dialog,
std::unique_ptr<SingleWebContentsDialogManager> mgr)
: dialog(dialog), manager(std::move(mgr)) {}
WebContentsModalDialogManager::DialogState::DialogState(DialogState&& state) =
default;
WebContentsModalDialogManager::DialogState::~DialogState() = default;
// TODO(gbillock): Move this to Views impl within Show()? It would
// call WebContents* contents = native_delegate_->GetWebContents(); and
// then set the block state. Advantage: could restrict some of the
// WCMDM delegate methods, then, and pass them behind the scenes.
void WebContentsModalDialogManager::BlockWebContentsInteraction(bool blocked) {
WebContents* contents = web_contents();
if (!contents) {
// The WebContents has already disconnected.
return;
}
if (blocked) {
scoped_ignore_input_events_ = contents->IgnoreInputEvents();
} else {
scoped_ignore_input_events_.reset();
}
if (delegate_)
delegate_->SetWebContentsBlocked(contents, blocked);
}
void WebContentsModalDialogManager::CloseAllDialogs() {
closing_all_dialogs_ = true;
// Clear out any dialogs since we are leaving this page entirely.
while (!child_dialogs_.empty()) {
child_dialogs_.front().manager->Close();
}
closing_all_dialogs_ = false;
}
void WebContentsModalDialogManager::DidFinishNavigation(
content::NavigationHandle* navigation_handle) {
if (!navigation_handle->IsInPrimaryMainFrame() ||
!navigation_handle->HasCommitted())
return;
if (!child_dialogs_.empty()) {
// Disable BFCache for the page which had any modal dialog open.
// This prevents the page which has print, confirm form resubmission, http
// password dialogs, etc. to go in to BFCache. We can't simply dismiss the
// dialogs in the case, since they are requesting meaningful input from the
// user that affects the loading or display of the content.
content::BackForwardCache::DisableForRenderFrameHost(
navigation_handle->GetPreviousRenderFrameHostId(),
back_forward_cache::DisabledReason(
back_forward_cache::DisabledReasonId::kModalDialog));
}
// Close constrained windows if necessary.
if (!net::registry_controlled_domains::SameDomainOrHost(
navigation_handle->GetPreviousPrimaryMainFrameURL(),
navigation_handle->GetURL(),
net::registry_controlled_domains::INCLUDE_PRIVATE_REGISTRIES))
CloseAllDialogs();
}
void WebContentsModalDialogManager::DidGetIgnoredUIEvent() {
if (!child_dialogs_.empty()) {
child_dialogs_.front().manager->Focus();
}
}
void WebContentsModalDialogManager::OnVisibilityChanged(
content::Visibility visibility) {
const bool web_contents_was_hidden = web_contents_is_hidden_;
web_contents_is_hidden_ = visibility == content::Visibility::HIDDEN;
if (child_dialogs_.empty()) {
return;
}
const bool state_changed = web_contents_is_hidden_ != web_contents_was_hidden;
if (web_contents_is_hidden_) {
if (state_changed) {
child_dialogs_.front().manager->Hide();
}
} else {
// Show the dialog if it transitioned from HIDDEN to VISIBLE or OCCLUDED, or
// from OCCLUDED to VISIBLE if the dialog is no longer active.
// TODO(crbug.com/1487345): Add an interaction test for this.
if (state_changed || !child_dialogs_.front().manager->IsActive()) {
child_dialogs_.front().manager->Show();
}
}
}
void WebContentsModalDialogManager::WebContentsDestroyed() {
// First cleanly close all child dialogs.
// TODO(mpcomplete): handle case if MaybeCloseChildWindows() already asked
// some of these to close. CloseAllDialogs is async, so it might get called
// twice before it runs.
CloseAllDialogs();
}
WEB_CONTENTS_USER_DATA_KEY_IMPL(WebContentsModalDialogManager);
} // namespace web_modal
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