/* * Copyright (c) 2020, Andreas Kling * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * 1. Redistributions of source code must retain the above copyright notice, this * list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include "OutOfProcessWebView.h" #include "WebContentClient.h" #include #include #include #include #include #include #include #include #include REGISTER_WIDGET(Web, OutOfProcessWebView) namespace Web { OutOfProcessWebView::OutOfProcessWebView() { set_should_hide_unnecessary_scrollbars(true); set_focus_policy(GUI::FocusPolicy::StrongFocus); create_client(); } OutOfProcessWebView::~OutOfProcessWebView() { } void OutOfProcessWebView::handle_web_content_process_crash() { create_client(); VERIFY(m_client_state.client); // Don't keep a stale backup bitmap around. m_backup_bitmap = nullptr; handle_resize(); StringBuilder builder; builder.append("Crashed: "); builder.append(escape_html_entities(m_url.to_string())); builder.append(""); builder.append("

Web page crashed"); if (!m_url.host().is_empty()) { builder.appendff(" on {}", escape_html_entities(m_url.host())); } builder.append("

"); builder.appendff("The web page {} has crashed.

You can reload the page to try again.", escape_html_entities(m_url.to_string_encoded()), escape_html_entities(m_url.to_string())); builder.append(""); load_html(builder.to_string(), m_url); } void OutOfProcessWebView::create_client() { m_client_state = {}; m_client_state.client = WebContentClient::construct(*this); m_client_state.client->on_web_content_process_crash = [this] { deferred_invoke([this] { handle_web_content_process_crash(); }); }; client().post_message(Messages::WebContentServer::UpdateSystemTheme(Gfx::current_system_theme_buffer())); } void OutOfProcessWebView::load(const URL& url) { m_url = url; client().post_message(Messages::WebContentServer::LoadURL(url)); } void OutOfProcessWebView::load_html(const StringView& html, const URL& url) { m_url = url; client().post_message(Messages::WebContentServer::LoadHTML(html, url)); } void OutOfProcessWebView::load_empty_document() { m_url = {}; client().post_message(Messages::WebContentServer::LoadHTML("", {})); } void OutOfProcessWebView::paint_event(GUI::PaintEvent& event) { GUI::ScrollableWidget::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.ptr() : m_backup_bitmap.ptr()) { painter.add_clip_rect(frame_inner_rect()); painter.translate(frame_thickness(), frame_thickness()); painter.blit({ 0, 0 }, *bitmap, bitmap->rect()); return; } painter.fill_rect(frame_inner_rect(), palette().base()); } void OutOfProcessWebView::resize_event(GUI::ResizeEvent& event) { GUI::ScrollableWidget::resize_event(event); handle_resize(); } void OutOfProcessWebView::handle_resize() { client().post_message(Messages::WebContentServer::SetViewportRect(Gfx::IntRect({ horizontal_scrollbar().value(), vertical_scrollbar().value() }, available_size()))); if (m_client_state.has_usable_bitmap) { // NOTE: We keep the outgoing front bitmap as a backup so we have something to paint until we get a new one. m_backup_bitmap = m_client_state.front_bitmap; } if (m_client_state.front_bitmap) { m_client_state.front_bitmap = nullptr; client().post_message(Messages::WebContentServer::RemoveBackingStore(m_client_state.front_bitmap_id)); } if (m_client_state.back_bitmap) { m_client_state.back_bitmap = nullptr; client().post_message(Messages::WebContentServer::RemoveBackingStore(m_client_state.back_bitmap_id)); } m_client_state.front_bitmap_id = -1; m_client_state.back_bitmap_id = -1; m_client_state.has_usable_bitmap = false; if (available_size().is_empty()) return; if (auto new_bitmap = Gfx::Bitmap::create_shareable(Gfx::BitmapFormat::RGB32, available_size())) { m_client_state.front_bitmap = move(new_bitmap); m_client_state.front_bitmap_id = m_client_state.next_bitmap_id++; client().post_message(Messages::WebContentServer::AddBackingStore(m_client_state.front_bitmap_id, m_client_state.front_bitmap->to_shareable_bitmap())); } if (auto new_bitmap = Gfx::Bitmap::create_shareable(Gfx::BitmapFormat::RGB32, available_size())) { m_client_state.back_bitmap = move(new_bitmap); m_client_state.back_bitmap_id = m_client_state.next_bitmap_id++; client().post_message(Messages::WebContentServer::AddBackingStore(m_client_state.back_bitmap_id, m_client_state.back_bitmap->to_shareable_bitmap())); } request_repaint(); } void OutOfProcessWebView::keydown_event(GUI::KeyEvent& event) { client().post_message(Messages::WebContentServer::KeyDown(event.key(), event.modifiers(), event.code_point())); } void OutOfProcessWebView::mousedown_event(GUI::MouseEvent& event) { client().post_message(Messages::WebContentServer::MouseDown(to_content_position(event.position()), event.button(), event.buttons(), event.modifiers())); } void OutOfProcessWebView::mouseup_event(GUI::MouseEvent& event) { client().post_message(Messages::WebContentServer::MouseUp(to_content_position(event.position()), event.button(), event.buttons(), event.modifiers())); } void OutOfProcessWebView::mousemove_event(GUI::MouseEvent& event) { client().post_message(Messages::WebContentServer::MouseMove(to_content_position(event.position()), event.button(), event.buttons(), event.modifiers())); } void OutOfProcessWebView::mousewheel_event(GUI::MouseEvent& event) { client().post_message(Messages::WebContentServer::MouseWheel(to_content_position(event.position()), event.button(), event.buttons(), event.modifiers(), event.wheel_delta())); } void OutOfProcessWebView::theme_change_event(GUI::ThemeChangeEvent& event) { GUI::ScrollableWidget::theme_change_event(event); client().post_message(Messages::WebContentServer::UpdateSystemTheme(Gfx::current_system_theme_buffer())); request_repaint(); } void OutOfProcessWebView::notify_server_did_paint(Badge, i32 bitmap_id) { if (m_client_state.back_bitmap_id == bitmap_id) { m_client_state.has_usable_bitmap = true; swap(m_client_state.back_bitmap, m_client_state.front_bitmap); swap(m_client_state.back_bitmap_id, m_client_state.front_bitmap_id); // We don't need the backup bitmap anymore, so drop it. m_backup_bitmap = nullptr; update(); } } void OutOfProcessWebView::notify_server_did_invalidate_content_rect(Badge, [[maybe_unused]] const Gfx::IntRect& content_rect) { request_repaint(); } void OutOfProcessWebView::notify_server_did_change_selection(Badge) { request_repaint(); } void OutOfProcessWebView::notify_server_did_request_cursor_change(Badge, Gfx::StandardCursor cursor) { set_override_cursor(cursor); } void OutOfProcessWebView::notify_server_did_layout(Badge, const Gfx::IntSize& content_size) { set_content_size(content_size); } void OutOfProcessWebView::notify_server_did_change_title(Badge, const String& title) { if (on_title_change) on_title_change(title); } void OutOfProcessWebView::notify_server_did_request_scroll(Badge, int wheel_delta) { vertical_scrollbar().set_value(vertical_scrollbar().value() + wheel_delta * 20); } void OutOfProcessWebView::notify_server_did_request_scroll_into_view(Badge, const Gfx::IntRect& rect) { scroll_into_view(rect, true, true); } void OutOfProcessWebView::notify_server_did_hover_link(Badge, const URL& url) { if (on_link_hover) on_link_hover(url); } void OutOfProcessWebView::notify_server_did_unhover_link(Badge) { set_override_cursor(Gfx::StandardCursor::None); if (on_link_hover) on_link_hover({}); } void OutOfProcessWebView::notify_server_did_click_link(Badge, const URL& url, const String& target, unsigned int modifiers) { if (on_link_click) on_link_click(url, target, modifiers); } void OutOfProcessWebView::notify_server_did_middle_click_link(Badge, const URL& url, const String& target, unsigned int modifiers) { if (on_link_middle_click) on_link_middle_click(url, target, modifiers); } void OutOfProcessWebView::notify_server_did_start_loading(Badge, const URL& url) { if (on_load_start) on_load_start(url); } void OutOfProcessWebView::notify_server_did_finish_loading(Badge, const URL& url) { if (on_load_finish) on_load_finish(url); } void OutOfProcessWebView::notify_server_did_request_context_menu(Badge, const Gfx::IntPoint& content_position) { if (on_context_menu_request) on_context_menu_request(screen_relative_rect().location().translated(to_widget_position(content_position))); } void OutOfProcessWebView::notify_server_did_request_link_context_menu(Badge, const Gfx::IntPoint& content_position, const URL& url, const String&, unsigned) { if (on_link_context_menu_request) on_link_context_menu_request(url, screen_relative_rect().location().translated(to_widget_position(content_position))); } void OutOfProcessWebView::notify_server_did_request_alert(Badge, const String& message) { GUI::MessageBox::show(window(), message, "Alert", GUI::MessageBox::Type::Information); } bool OutOfProcessWebView::notify_server_did_request_confirm(Badge, const String& message) { auto confirm_result = GUI::MessageBox::show(window(), message, "Confirm", GUI::MessageBox::Type::Warning, GUI::MessageBox::InputType::OKCancel); return confirm_result == GUI::Dialog::ExecResult::ExecOK; } String OutOfProcessWebView::notify_server_did_request_prompt(Badge, const String& message, const String& default_) { String response { default_ }; if (GUI::InputBox::show(window(), response, message, "Prompt") == GUI::InputBox::ExecOK) return response; return {}; } void OutOfProcessWebView::notify_server_did_get_source(const URL& url, const String& source) { if (on_get_source) on_get_source(url, source); } void OutOfProcessWebView::notify_server_did_js_console_output(const String& method, const String& line) { if (on_js_console_output) on_js_console_output(method, line); } void OutOfProcessWebView::did_scroll() { client().post_message(Messages::WebContentServer::SetViewportRect(visible_content_rect())); request_repaint(); } void OutOfProcessWebView::request_repaint() { // If this widget was instantiated but not yet added to a window, // it won't have a back bitmap yet, so we can just skip repaint requests. if (!m_client_state.back_bitmap) return; client().post_message(Messages::WebContentServer::Paint(m_client_state.back_bitmap->rect().translated(horizontal_scrollbar().value(), vertical_scrollbar().value()), m_client_state.back_bitmap_id)); } WebContentClient& OutOfProcessWebView::client() { VERIFY(m_client_state.client); return *m_client_state.client; } void OutOfProcessWebView::debug_request(const String& request, const String& argument) { client().post_message(Messages::WebContentServer::DebugRequest(request, argument)); } void OutOfProcessWebView::get_source() { client().post_message(Messages::WebContentServer::GetSource()); } void OutOfProcessWebView::js_console_initialize() { client().post_message(Messages::WebContentServer::JSConsoleInitialize()); } void OutOfProcessWebView::js_console_input(const String& js_source) { client().post_message(Messages::WebContentServer::JSConsoleInput(js_source)); } }