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Code Issues Activity Actions

LibWebView+WebContent: Wait for dialog responses without blocking IPC

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Currently, the WebContent process is completely blocked while waiting
for a response to a dialog request. This patch allows the IPC event loop
to continue executing while only blocking the HTML event loop.

This will allow other processes like WebDriver to continue to operate on
the WebContent process while a dialog is open.
This commit is contained in:
Timothy Flynn 2022-11-15 15:49:36 -05:00 • committed by Linus Groh
parent 4b8729aea6
commit 364f44d7d8
11 changed files with 118 additions and 32 deletions
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71
Userland/Services/WebContent/PageHost.cpp
View file

@ -7,13 +7,17 @@
#include "PageHost.h"
#include "ConnectionFromClient.h"
#include <AK/SourceLocation.h>
#include <LibGfx/Painter.h>
#include <LibGfx/ShareableBitmap.h>
#include <LibGfx/SystemTheme.h>
#include <LibWeb/Cookie/ParsedCookie.h>
#include <LibWeb/HTML/BrowsingContext.h>
#include <LibWeb/HTML/EventLoop/EventLoop.h>
#include <LibWeb/HTML/Scripting/Environments.h>
#include <LibWeb/Layout/InitialContainingBlock.h>
#include <LibWeb/Painting/PaintableBox.h>
#include <LibWeb/Platform/EventLoopPlugin.h>
#include <LibWeb/Platform/Timer.h>
#include <WebContent/WebContentClientEndpoint.h>
#include <WebContent/WebDriverConnection.h>
@ -233,33 +237,72 @@ void PageHost::page_did_request_link_context_menu(Gfx::IntPoint const& content_p
m_client.async_did_request_link_context_menu(content_position, url, target, modifiers);
}
template<typename ResponseType>
static ResponseType spin_event_loop_until_dialog_closed(ConnectionFromClient& client, Optional<ResponseType>& response, SourceLocation location = SourceLocation::current())
{
auto& event_loop = Web::HTML::current_settings_object().responsible_event_loop();
ScopeGuard guard { [&] { event_loop.set_execution_paused(false); } };
event_loop.set_execution_paused(true);
Web::Platform::EventLoopPlugin::the().spin_until([&]() {
return response.has_value() || !client.is_open();
});
if (!client.is_open()) {
dbgln("WebContent client disconnected during {}. Exiting peacefully.", location.function_name());
exit(0);
}
return response.release_value();
}
void PageHost::page_did_request_alert(String const& message)
{
auto response = m_client.send_sync_but_allow_failure<Messages::WebContentClient::DidRequestAlert>(message);
if (!response) {
dbgln("WebContent client disconnected during DidRequestAlert. Exiting peacefully.");
exit(0);
m_pending_dialog = PendingDialog::Alert;
m_client.async_did_request_alert(message);
spin_event_loop_until_dialog_closed(m_client, m_pending_alert_response);
}
void PageHost::alert_closed()
{
if (m_pending_dialog == PendingDialog::Alert) {
m_pending_dialog = PendingDialog::None;
m_pending_alert_response = Empty {};
}
}
bool PageHost::page_did_request_confirm(String const& message)
{
auto response = m_client.send_sync_but_allow_failure<Messages::WebContentClient::DidRequestConfirm>(message);
if (!response) {
dbgln("WebContent client disconnected during DidRequestConfirm. Exiting peacefully.");
exit(0);
m_pending_dialog = PendingDialog::Confirm;
m_client.async_did_request_confirm(message);
return spin_event_loop_until_dialog_closed(m_client, m_pending_confirm_response);
}
void PageHost::confirm_closed(bool accepted)
{
if (m_pending_dialog == PendingDialog::Confirm) {
m_pending_dialog = PendingDialog::None;
m_pending_confirm_response = accepted;
}
return response->take_result();
}
String PageHost::page_did_request_prompt(String const& message, String const& default_)
{
auto response = m_client.send_sync_but_allow_failure<Messages::WebContentClient::DidRequestPrompt>(message, default_);
if (!response) {
dbgln("WebContent client disconnected during DidRequestPrompt. Exiting peacefully.");
exit(0);
m_pending_dialog = PendingDialog::Prompt;
m_client.async_did_request_prompt(message, default_);
return spin_event_loop_until_dialog_closed(m_client, m_pending_prompt_response);
}
void PageHost::prompt_closed(String response)
{
if (m_pending_dialog == PendingDialog::Prompt) {
m_pending_dialog = PendingDialog::None;
m_pending_prompt_response = move(response);
}
return response->take_response();
}
void PageHost::page_did_change_favicon(Gfx::Bitmap const& favicon)