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ladybird/Userland/Libraries/LibWebView/OutOfProcessWebView.cpp
Andreas Kling 5d6169793a Ladybird+LibWebView: Respawn with same JS interpreter after crash 
WebView::ViewImplementation now remembers which JS interpreter it
started with, and uses the same setting if the WebContent process
crashes and we have to spawn a new one.
2023-07-22 08:49:59 -04:00

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/*
* Copyright (c) 2020-2021, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include "OutOfProcessWebView.h"
#include "WebContentClient.h"
#include <AK/DeprecatedString.h>
#include <LibFileSystemAccessClient/Client.h>
#include <LibGUI/Application.h>
#include <LibGUI/Desktop.h>
#include <LibGUI/Dialog.h>
#include <LibGUI/InputBox.h>
#include <LibGUI/MessageBox.h>
#include <LibGUI/Painter.h>
#include <LibGUI/Scrollbar.h>
#include <LibGUI/Window.h>
#include <LibGfx/Font/FontDatabase.h>
#include <LibGfx/Palette.h>
#include <LibGfx/SystemTheme.h>
#include <LibWeb/Crypto/Crypto.h>
REGISTER_WIDGET(WebView, OutOfProcessWebView)
namespace WebView {
OutOfProcessWebView::OutOfProcessWebView(UseJavaScriptBytecode use_javascript_bytecode)
: ViewImplementation(use_javascript_bytecode)
{
set_should_hide_unnecessary_scrollbars(true);
set_focus_policy(GUI::FocusPolicy::StrongFocus);
create_client();
}
OutOfProcessWebView::~OutOfProcessWebView() = default;
void OutOfProcessWebView::create_client(EnableCallgrindProfiling)
{
m_client_state = {};
m_client_state.client = WebContentClient::try_create(*this).release_value_but_fixme_should_propagate_errors();
m_client_state.client->on_web_content_process_crash = [this] {
deferred_invoke([this] {
handle_web_content_process_crash();
});
};
m_client_state.client_handle = Web::Crypto::generate_random_uuid().release_value_but_fixme_should_propagate_errors();
client().async_set_window_handle(m_client_state.client_handle);
client().async_update_system_theme(Gfx::current_system_theme_buffer());
client().async_update_system_fonts(Gfx::FontDatabase::default_font_query(), Gfx::FontDatabase::fixed_width_font_query(), Gfx::FontDatabase::window_title_font_query());
client().async_update_screen_rects(GUI::Desktop::the().rects(), GUI::Desktop::the().main_screen_index());
}
void OutOfProcessWebView::paint_event(GUI::PaintEvent& event)
{
Super::paint_event(event);
// If the available size is empty, we don't have a front or back bitmap to draw.
if (available_size().is_empty())
return;
GUI::Painter painter(*this);
painter.add_clip_rect(event.rect());
if (auto* bitmap = m_client_state.has_usable_bitmap ? m_client_state.front_bitmap.bitmap.ptr() : m_backup_bitmap.ptr()) {
painter.add_clip_rect(frame_inner_rect());
painter.translate(frame_thickness(), frame_thickness());
if (m_content_scales_to_viewport) {
auto bitmap_rect = Gfx::IntRect {
{},
m_client_state.has_usable_bitmap
? m_client_state.front_bitmap.last_painted_size
: m_backup_bitmap_size
};
painter.draw_scaled_bitmap(rect(), *bitmap, bitmap_rect);
} else {
painter.blit({ 0, 0 }, *bitmap, bitmap->rect());
}
return;
}
painter.fill_rect(frame_inner_rect(), palette().base());
}
void OutOfProcessWebView::resize_event(GUI::ResizeEvent& event)
{
Super::resize_event(event);
client().async_set_viewport_rect(Gfx::IntRect({ horizontal_scrollbar().value(), vertical_scrollbar().value() }, available_size()));
handle_resize();
}
Gfx::IntRect OutOfProcessWebView::viewport_rect() const
{
return visible_content_rect();
}
Gfx::IntPoint OutOfProcessWebView::to_content_position(Gfx::IntPoint widget_position) const
{
return GUI::AbstractScrollableWidget::to_content_position(widget_position);
}
Gfx::IntPoint OutOfProcessWebView::to_widget_position(Gfx::IntPoint content_position) const
{
return GUI::AbstractScrollableWidget::to_widget_position(content_position);
}
void OutOfProcessWebView::update_zoom()
{
client().async_set_device_pixels_per_css_pixel(m_device_pixel_ratio * m_zoom_level);
// FIXME: Refactor this into separate update_viewport_rect() + request_repaint() like in Ladybird
handle_resize();
}
void OutOfProcessWebView::keydown_event(GUI::KeyEvent& event)
{
enqueue_input_event(event);
}
void OutOfProcessWebView::keyup_event(GUI::KeyEvent& event)
{
enqueue_input_event(event);
}
void OutOfProcessWebView::mousedown_event(GUI::MouseEvent& event)
{
enqueue_input_event(event);
}
void OutOfProcessWebView::mouseup_event(GUI::MouseEvent& event)
{
enqueue_input_event(event);
if (event.button() == GUI::MouseButton::Backward) {
if (on_back_button)
on_back_button();
} else if (event.button() == GUI::MouseButton::Forward) {
if (on_forward_button)
on_forward_button();
}
}
void OutOfProcessWebView::mousemove_event(GUI::MouseEvent& event)
{
enqueue_input_event(event);
}
void OutOfProcessWebView::mousewheel_event(GUI::MouseEvent& event)
{
enqueue_input_event(event);
}
void OutOfProcessWebView::doubleclick_event(GUI::MouseEvent& event)
{
enqueue_input_event(event);
}
void OutOfProcessWebView::theme_change_event(GUI::ThemeChangeEvent& event)
{
Super::theme_change_event(event);
client().async_update_system_theme(Gfx::current_system_theme_buffer());
request_repaint();
}
void OutOfProcessWebView::screen_rects_change_event(GUI::ScreenRectsChangeEvent& event)
{
client().async_update_screen_rects(event.rects(), event.main_screen_index());
}
void OutOfProcessWebView::notify_server_did_paint(Badge<WebContentClient>, i32 bitmap_id, Gfx::IntSize size)
{
if (m_client_state.back_bitmap.id == bitmap_id) {
m_client_state.has_usable_bitmap = true;
m_client_state.back_bitmap.pending_paints--;
m_client_state.back_bitmap.last_painted_size = size;
swap(m_client_state.back_bitmap, m_client_state.front_bitmap);
// We don't need the backup bitmap anymore, so drop it.
m_backup_bitmap = nullptr;
update();
if (m_client_state.got_repaint_requests_while_painting) {
m_client_state.got_repaint_requests_while_painting = false;
request_repaint();
}
}
}
void OutOfProcessWebView::notify_server_did_invalidate_content_rect(Badge<WebContentClient>, [[maybe_unused]] Gfx::IntRect const& content_rect)
{
request_repaint();
}
void OutOfProcessWebView::notify_server_did_change_selection(Badge<WebContentClient>)
{
request_repaint();
}
void OutOfProcessWebView::notify_server_did_request_cursor_change(Badge<WebContentClient>, Gfx::StandardCursor cursor)
{
set_override_cursor(cursor);
}
void OutOfProcessWebView::notify_server_did_layout(Badge<WebContentClient>, Gfx::IntSize content_size)
{
set_content_size(content_size);
}
void OutOfProcessWebView::notify_server_did_request_scroll(Badge<WebContentClient>, i32 x_delta, i32 y_delta)
{
horizontal_scrollbar().increase_slider_by(x_delta);
vertical_scrollbar().increase_slider_by(y_delta);
}
void OutOfProcessWebView::notify_server_did_request_scroll_to(Badge<WebContentClient>, Gfx::IntPoint scroll_position)
{
horizontal_scrollbar().set_value(scroll_position.x());
vertical_scrollbar().set_value(scroll_position.y());
}
void OutOfProcessWebView::notify_server_did_request_scroll_into_view(Badge<WebContentClient>, Gfx::IntRect const& rect)
{
scroll_into_view(rect, true, true);
}
void OutOfProcessWebView::notify_server_did_enter_tooltip_area(Badge<WebContentClient>, Gfx::IntPoint, DeprecatedString const& title)
{
GUI::Application::the()->show_tooltip(title, nullptr);
}
void OutOfProcessWebView::notify_server_did_leave_tooltip_area(Badge<WebContentClient>)
{
GUI::Application::the()->hide_tooltip();
}
void OutOfProcessWebView::notify_server_did_request_alert(Badge<WebContentClient>, String const& message)
{
m_dialog = GUI::MessageBox::create(window(), message, "Alert"sv, GUI::MessageBox::Type::Information, GUI::MessageBox::InputType::OK).release_value_but_fixme_should_propagate_errors();
m_dialog->set_icon(window()->icon());
m_dialog->exec();
client().async_alert_closed();
m_dialog = nullptr;
}
void OutOfProcessWebView::notify_server_did_request_confirm(Badge<WebContentClient>, String const& message)
{
m_dialog = GUI::MessageBox::create(window(), message, "Confirm"sv, GUI::MessageBox::Type::Warning, GUI::MessageBox::InputType::OKCancel).release_value_but_fixme_should_propagate_errors();
m_dialog->set_icon(window()->icon());
client().async_confirm_closed(m_dialog->exec() == GUI::Dialog::ExecResult::OK);
m_dialog = nullptr;
}
void OutOfProcessWebView::notify_server_did_request_prompt(Badge<WebContentClient>, String const& message, String const& default_)
{
String mutable_value = default_;
m_dialog = GUI::InputBox::create(window(), mutable_value, message, "Prompt"sv, GUI::InputType::Text).release_value_but_fixme_should_propagate_errors();
m_dialog->set_icon(window()->icon());
if (m_dialog->exec() == GUI::InputBox::ExecResult::OK) {
auto const& dialog = static_cast<GUI::InputBox const&>(*m_dialog);
auto response = dialog.text_value();
client().async_prompt_closed(move(response));
} else {
client().async_prompt_closed({});
}
m_dialog = nullptr;
}
void OutOfProcessWebView::notify_server_did_request_set_prompt_text(Badge<WebContentClient>, String const& message)
{
if (m_dialog && is<GUI::InputBox>(*m_dialog))
static_cast<GUI::InputBox&>(*m_dialog).set_text_value(message);
}
void OutOfProcessWebView::notify_server_did_request_accept_dialog(Badge<WebContentClient>)
{
if (m_dialog)
m_dialog->done(GUI::Dialog::ExecResult::OK);
}
void OutOfProcessWebView::notify_server_did_request_dismiss_dialog(Badge<WebContentClient>)
{
if (m_dialog)
m_dialog->done(GUI::Dialog::ExecResult::Cancel);
}
void OutOfProcessWebView::notify_server_did_request_file(Badge<WebContentClient>, DeprecatedString const& path, i32 request_id)
{
auto file = FileSystemAccessClient::Client::the().request_file_read_only_approved(window(), path);
if (file.is_error())
client().async_handle_file_return(file.error().code(), {}, request_id);
else
client().async_handle_file_return(0, IPC::File(file.value().stream()), request_id);
}
void OutOfProcessWebView::did_scroll()
{
client().async_set_viewport_rect(visible_content_rect());
request_repaint();
}
DeprecatedString OutOfProcessWebView::dump_layout_tree()
{
return client().dump_layout_tree();
}
OrderedHashMap<DeprecatedString, DeprecatedString> OutOfProcessWebView::get_local_storage_entries()
{
return client().get_local_storage_entries();
}
OrderedHashMap<DeprecatedString, DeprecatedString> OutOfProcessWebView::get_session_storage_entries()
{
return client().get_session_storage_entries();
}
void OutOfProcessWebView::set_content_filters(Vector<String> filters)
{
client().async_set_content_filters(move(filters));
}
void OutOfProcessWebView::set_autoplay_allowed_on_all_websites()
{
client().async_set_autoplay_allowed_on_all_websites();
}
void OutOfProcessWebView::set_autoplay_allowlist(Vector<String> allowlist)
{
client().async_set_autoplay_allowlist(move(allowlist));
}
void OutOfProcessWebView::set_proxy_mappings(Vector<DeprecatedString> proxies, HashMap<DeprecatedString, size_t> mappings)
{
client().async_set_proxy_mappings(move(proxies), move(mappings));
}
void OutOfProcessWebView::connect_to_webdriver(DeprecatedString const& webdriver_ipc_path)
{
client().async_connect_to_webdriver(webdriver_ipc_path);
}
void OutOfProcessWebView::set_window_position(Gfx::IntPoint position)
{
client().async_set_window_position(position);
}
void OutOfProcessWebView::set_window_size(Gfx::IntSize size)
{
client().async_set_window_size(size);
}
void OutOfProcessWebView::focusin_event(GUI::FocusEvent&)
{
client().async_set_has_focus(true);
}
void OutOfProcessWebView::focusout_event(GUI::FocusEvent&)
{
client().async_set_has_focus(false);
}
void OutOfProcessWebView::set_system_visibility_state(bool visible)
{
client().async_set_system_visibility_state(visible);
}
void OutOfProcessWebView::show_event(GUI::ShowEvent&)
{
set_system_visibility_state(true);
}
void OutOfProcessWebView::hide_event(GUI::HideEvent&)
{
set_system_visibility_state(false);
}
void OutOfProcessWebView::enqueue_input_event(InputEvent const& event)
{
m_pending_input_events.enqueue(event);
process_next_input_event();
}
void OutOfProcessWebView::process_next_input_event()
{
if (m_pending_input_events.is_empty())
return;
if (m_is_awaiting_response_for_input_event)
return;
m_is_awaiting_response_for_input_event = true;
// Send the next event over to the web content to be handled by JS.
// We'll later get a message to say whether JS prevented the default event behavior,
// at which point we either discard or handle that event, then try and process the next one.
auto event = m_pending_input_events.head();
event.visit(
[this](GUI::KeyEvent const& event) {
switch (event.type()) {
case GUI::Event::Type::KeyDown:
client().async_key_down(event.key(), event.modifiers(), event.code_point());
break;
case GUI::Event::Type::KeyUp:
client().async_key_up(event.key(), event.modifiers(), event.code_point());
break;
default:
dbgln("Unrecognized key event type in OOPWV input event queue: {}", event.type());
VERIFY_NOT_REACHED();
}
},
[this](GUI::MouseEvent const& event) {
switch (event.type()) {
case GUI::Event::Type::MouseDown:
client().async_mouse_down(to_content_position(event.position()), event.button(), event.buttons(), event.modifiers());
break;
case GUI::Event::Type::MouseUp:
client().async_mouse_up(to_content_position(event.position()), event.button(), event.buttons(), event.modifiers());
break;
case GUI::Event::Type::MouseMove:
client().async_mouse_move(to_content_position(event.position()), event.button(), event.buttons(), event.modifiers());
break;
case GUI::Event::Type::MouseWheel:
client().async_mouse_wheel(to_content_position(event.position()), event.button(), event.buttons(), event.modifiers(), event.wheel_delta_x(), event.wheel_delta_y());
break;
case GUI::Event::Type::MouseDoubleClick:
client().async_doubleclick(to_content_position(event.position()), event.button(), event.buttons(), event.modifiers());
break;
default:
dbgln("Unrecognized mouse event type in OOPWV input event queue: {}", event.type());
VERIFY_NOT_REACHED();
}
});
}
void OutOfProcessWebView::notify_server_did_finish_handling_input_event(bool event_was_accepted)
{
VERIFY(m_is_awaiting_response_for_input_event);
auto event = m_pending_input_events.dequeue();
m_is_awaiting_response_for_input_event = false;
if (!event_was_accepted) {
// Here we handle events that were not consumed or cancelled by web content.
// That is, we manually implement the steps that would have happened if the original
// OutOfProcessWebView::foo_event() had called event.ignore().
//
// The first step is to give our superclass a chance to handle the event.
//
// Then, if it does not, we dispatch the event to our parent widget, but limited so
// that it will never bubble up to the Window. (Otherwise, it would then dispatch the
// event to us since we are the focused widget, and it would go round indefinitely.)
//
// Finally, any unhandled KeyDown events are propagated to trigger any Actions.
event.visit(
[this](GUI::KeyEvent& event) {
switch (event.type()) {
case GUI::Event::Type::KeyDown:
Super::keydown_event(event);
break;
case GUI::Event::Type::KeyUp:
Super::keyup_event(event);
break;
default:
dbgln("Unhandled key event type in OOPWV input event queue: {}", event.type());
VERIFY_NOT_REACHED();
}
if (!event.is_accepted()) {
parent_widget()->dispatch_event(event, window());
// NOTE: If other events can ever trigger shortcuts, propagate those here.
if (!event.is_accepted() && event.type() == GUI::Event::Type::KeyDown)
window()->propagate_shortcuts(event, this);
}
},
[this](GUI::MouseEvent& event) {
switch (event.type()) {
case GUI::Event::Type::MouseDown:
Super::mousedown_event(event);
break;
case GUI::Event::Type::MouseUp:
Super::mouseup_event(event);
break;
case GUI::Event::Type::MouseMove:
Super::mousemove_event(event);
break;
case GUI::Event::Type::MouseWheel:
Super::mousewheel_event(event);
break;
case GUI::Event::Type::MouseDoubleClick:
Super::doubleclick_event(event);
break;
default:
dbgln("Unhandled mouse event type in OOPWV input event queue: {}", event.type());
VERIFY_NOT_REACHED();
}
if (!event.is_accepted())
parent_widget()->dispatch_event(event, window());
// FIXME: Propagate event for mouse-button shortcuts once that is implemented.
});
}
process_next_input_event();
}
void OutOfProcessWebView::set_content_scales_to_viewport(bool b)
{
m_content_scales_to_viewport = b;
}
}
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