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Diffstat (limited to 'Libraries/LibWeb/Page/EventHandler.cpp')
| -rw-r--r-- | Libraries/LibWeb/Page/EventHandler.cpp | 414 |
1 files changed, 0 insertions, 414 deletions
diff --git a/Libraries/LibWeb/Page/EventHandler.cpp b/Libraries/LibWeb/Page/EventHandler.cpp deleted file mode 100644 index 7a69085aa4..0000000000 --- a/Libraries/LibWeb/Page/EventHandler.cpp +++ /dev/null @@ -1,414 +0,0 @@ -/* - * Copyright (c) 2020, Andreas Kling <kling@serenityos.org> - * 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 <LibGUI/Event.h> -#include <LibGUI/Window.h> -#include <LibJS/Runtime/Value.h> -#include <LibWeb/DOM/Document.h> -#include <LibWeb/DOM/Range.h> -#include <LibWeb/DOM/Text.h> -#include <LibWeb/HTML/HTMLAnchorElement.h> -#include <LibWeb/HTML/HTMLIFrameElement.h> -#include <LibWeb/HTML/HTMLImageElement.h> -#include <LibWeb/InProcessWebView.h> -#include <LibWeb/Layout/InitialContainingBlockBox.h> -#include <LibWeb/Page/EventHandler.h> -#include <LibWeb/Page/Frame.h> -#include <LibWeb/UIEvents/EventNames.h> -#include <LibWeb/UIEvents/MouseEvent.h> - -namespace Web { - -static Gfx::IntPoint compute_mouse_event_offset(const Gfx::IntPoint& position, const Layout::Node& layout_node) -{ - auto top_left_of_layout_node = layout_node.box_type_agnostic_position(); - return { - position.x() - static_cast<int>(top_left_of_layout_node.x()), - position.y() - static_cast<int>(top_left_of_layout_node.y()) - }; -} - -EventHandler::EventHandler(Badge<Frame>, Frame& frame) - : m_frame(frame) - , m_edit_event_handler(make<EditEventHandler>(frame)) -{ -} - -EventHandler::~EventHandler() -{ -} - -const Layout::InitialContainingBlockBox* EventHandler::layout_root() const -{ - if (!m_frame.document()) - return nullptr; - return m_frame.document()->layout_node(); -} - -Layout::InitialContainingBlockBox* EventHandler::layout_root() -{ - if (!m_frame.document()) - return nullptr; - return m_frame.document()->layout_node(); -} - -bool EventHandler::handle_mouseup(const Gfx::IntPoint& position, unsigned button, unsigned modifiers) -{ - if (!layout_root()) - return false; - - if (m_mouse_event_tracking_layout_node) { - m_mouse_event_tracking_layout_node->handle_mouseup({}, position, button, modifiers); - return true; - } - - bool handled_event = false; - - auto result = layout_root()->hit_test(position, Layout::HitTestType::Exact); - - if (result.layout_node && result.layout_node->wants_mouse_events()) { - result.layout_node->handle_mouseup({}, position, button, modifiers); - - // Things may have changed as a consequence of Layout::Node::handle_mouseup(). Hit test again. - if (!layout_root()) - return true; - result = layout_root()->hit_test(position, Layout::HitTestType::Exact); - } - - if (result.layout_node && result.layout_node->dom_node()) { - RefPtr<DOM::Node> node = result.layout_node->dom_node(); - if (is<HTML::HTMLIFrameElement>(*node)) { - if (auto* subframe = downcast<HTML::HTMLIFrameElement>(*node).content_frame()) - return subframe->event_handler().handle_mouseup(position.translated(compute_mouse_event_offset({}, *result.layout_node)), button, modifiers); - return false; - } - auto offset = compute_mouse_event_offset(position, *result.layout_node); - node->dispatch_event(UIEvents::MouseEvent::create(UIEvents::EventNames::mouseup, offset.x(), offset.y())); - handled_event = true; - } - - if (button == GUI::MouseButton::Left) - m_in_mouse_selection = false; - return handled_event; -} - -bool EventHandler::handle_mousedown(const Gfx::IntPoint& position, unsigned button, unsigned modifiers) -{ - if (!layout_root()) - return false; - - if (m_mouse_event_tracking_layout_node) { - m_mouse_event_tracking_layout_node->handle_mousedown({}, position, button, modifiers); - return true; - } - - NonnullRefPtr document = *m_frame.document(); - RefPtr<DOM::Node> node; - - { - auto result = layout_root()->hit_test(position, Layout::HitTestType::Exact); - if (!result.layout_node) - return false; - - node = result.layout_node->dom_node(); - document->set_hovered_node(node); - - if (result.layout_node->wants_mouse_events()) { - result.layout_node->handle_mousedown({}, position, button, modifiers); - return true; - } - - if (!node) - return false; - - if (is<HTML::HTMLIFrameElement>(*node)) { - if (auto* subframe = downcast<HTML::HTMLIFrameElement>(*node).content_frame()) - return subframe->event_handler().handle_mousedown(position.translated(compute_mouse_event_offset({}, *result.layout_node)), button, modifiers); - return false; - } - - if (auto* page = m_frame.page()) - page->set_focused_frame({}, m_frame); - - auto offset = compute_mouse_event_offset(position, *result.layout_node); - node->dispatch_event(UIEvents::MouseEvent::create(UIEvents::EventNames::mousedown, offset.x(), offset.y())); - } - - // NOTE: Dispatching an event may have disturbed the world. - if (!layout_root() || layout_root() != node->document().layout_node()) - return true; - - if (button == GUI::MouseButton::Right && is<HTML::HTMLImageElement>(*node)) { - auto& image_element = downcast<HTML::HTMLImageElement>(*node); - auto image_url = image_element.document().complete_url(image_element.src()); - if (auto* page = m_frame.page()) - page->client().page_did_request_image_context_menu(m_frame.to_main_frame_position(position), image_url, "", modifiers, image_element.bitmap()); - return true; - } - - if (RefPtr<HTML::HTMLAnchorElement> link = node->enclosing_link_element()) { - auto href = link->href(); - auto url = document->complete_url(href); - dbgln("Web::EventHandler: Clicking on a link to {}", url); - if (button == GUI::MouseButton::Left) { - auto href = link->href(); - auto url = document->complete_url(href); - if (href.starts_with("javascript:")) { - document->run_javascript(href.substring_view(11, href.length() - 11)); - } else if (href.starts_with('#')) { - auto anchor = href.substring_view(1, href.length() - 1); - m_frame.scroll_to_anchor(anchor); - } else { - if (m_frame.is_main_frame()) { - if (auto* page = m_frame.page()) - page->client().page_did_click_link(url, link->target(), modifiers); - } else { - // FIXME: Handle different targets! - m_frame.loader().load(url, FrameLoader::Type::Navigation); - } - } - } else if (button == GUI::MouseButton::Right) { - if (auto* page = m_frame.page()) - page->client().page_did_request_link_context_menu(m_frame.to_main_frame_position(position), url, link->target(), modifiers); - } else if (button == GUI::MouseButton::Middle) { - if (auto* page = m_frame.page()) - page->client().page_did_middle_click_link(url, link->target(), modifiers); - } - } else { - if (button == GUI::MouseButton::Left) { - auto result = layout_root()->hit_test(position, Layout::HitTestType::TextCursor); - if (result.layout_node && result.layout_node->dom_node()) { - m_frame.set_cursor_position(DOM::Position(*node, result.index_in_node)); - layout_root()->set_selection({ { result.layout_node, result.index_in_node }, {} }); - m_in_mouse_selection = true; - } - } else if (button == GUI::MouseButton::Right) { - if (auto* page = m_frame.page()) - page->client().page_did_request_context_menu(m_frame.to_main_frame_position(position)); - } - } - return true; -} - -bool EventHandler::handle_mousemove(const Gfx::IntPoint& position, unsigned buttons, unsigned modifiers) -{ - if (!layout_root()) - return false; - - if (m_mouse_event_tracking_layout_node) { - m_mouse_event_tracking_layout_node->handle_mousemove({}, position, buttons, modifiers); - return true; - } - - auto& document = *m_frame.document(); - - bool hovered_node_changed = false; - bool is_hovering_link = false; - bool is_hovering_text = false; - auto result = layout_root()->hit_test(position, Layout::HitTestType::Exact); - const HTML::HTMLAnchorElement* hovered_link_element = nullptr; - if (result.layout_node) { - - if (result.layout_node->wants_mouse_events()) { - document.set_hovered_node(result.layout_node->dom_node()); - result.layout_node->handle_mousemove({}, position, buttons, modifiers); - // FIXME: It feels a bit aggressive to always update the cursor like this. - if (auto* page = m_frame.page()) - page->client().page_did_request_cursor_change(Gfx::StandardCursor::None); - return true; - } - - RefPtr<DOM::Node> node = result.layout_node->dom_node(); - - if (node && is<HTML::HTMLIFrameElement>(*node)) { - if (auto* subframe = downcast<HTML::HTMLIFrameElement>(*node).content_frame()) - return subframe->event_handler().handle_mousemove(position.translated(compute_mouse_event_offset({}, *result.layout_node)), buttons, modifiers); - return false; - } - - hovered_node_changed = node != document.hovered_node(); - document.set_hovered_node(node); - if (node) { - if (node->is_text()) - is_hovering_text = true; - hovered_link_element = node->enclosing_link_element(); - if (hovered_link_element) - is_hovering_link = true; - auto offset = compute_mouse_event_offset(position, *result.layout_node); - node->dispatch_event(UIEvents::MouseEvent::create(UIEvents::EventNames::mousemove, offset.x(), offset.y())); - // NOTE: Dispatching an event may have disturbed the world. - if (!layout_root() || layout_root() != node->document().layout_node()) - return true; - } - if (m_in_mouse_selection) { - auto hit = layout_root()->hit_test(position, Layout::HitTestType::TextCursor); - if (hit.layout_node && hit.layout_node->dom_node()) { - layout_root()->set_selection_end({ hit.layout_node, hit.index_in_node }); - } - if (auto* page = m_frame.page()) - page->client().page_did_change_selection(); - } - } - - if (auto* page = m_frame.page()) { - if (is_hovering_link) - page->client().page_did_request_cursor_change(Gfx::StandardCursor::Hand); - else if (is_hovering_text) - page->client().page_did_request_cursor_change(Gfx::StandardCursor::IBeam); - else - page->client().page_did_request_cursor_change(Gfx::StandardCursor::None); - - if (hovered_node_changed) { - RefPtr<HTML::HTMLElement> hovered_html_element = document.hovered_node() ? document.hovered_node()->enclosing_html_element() : nullptr; - if (hovered_html_element && !hovered_html_element->title().is_null()) { - page->client().page_did_enter_tooltip_area(m_frame.to_main_frame_position(position), hovered_html_element->title()); - } else { - page->client().page_did_leave_tooltip_area(); - } - if (is_hovering_link) - page->client().page_did_hover_link(document.complete_url(hovered_link_element->href())); - else - page->client().page_did_unhover_link(); - } - } - return true; -} - -bool EventHandler::focus_next_element() -{ - if (!m_frame.document()) - return false; - auto* element = m_frame.document()->focused_element(); - if (!element) { - element = m_frame.document()->first_child_of_type<DOM::Element>(); - if (element && element->is_focusable()) { - m_frame.document()->set_focused_element(element); - return true; - } - } - - for (element = element->next_element_in_pre_order(); element && !element->is_focusable(); element = element->next_element_in_pre_order()) - ; - - m_frame.document()->set_focused_element(element); - return element; -} - -bool EventHandler::focus_previous_element() -{ - // FIXME: Implement Shift-Tab cycling backwards through focusable elements! - return false; -} - -bool EventHandler::handle_keydown(KeyCode key, unsigned modifiers, u32 code_point) -{ - if (key == KeyCode::Key_Tab) { - if (modifiers & KeyModifier::Mod_Shift) - return focus_previous_element(); - else - return focus_next_element(); - } - - if (layout_root()->selection().is_valid()) { - auto range = layout_root()->selection().to_dom_range()->normalized(); - if (range->start_container()->is_editable()) { - m_frame.document()->layout_node()->set_selection({}); - - // FIXME: This doesn't work for some reason? - m_frame.set_cursor_position({ *range->start_container(), range->start_offset() }); - - if (key == KeyCode::Key_Backspace || key == KeyCode::Key_Delete) { - - m_edit_event_handler->handle_delete(range); - return true; - } else { - - m_edit_event_handler->handle_delete(range); - - m_edit_event_handler->handle_insert(m_frame.cursor_position(), code_point); - m_frame.cursor_position().set_offset(m_frame.cursor_position().offset() + 1); - return true; - } - } - } - - if (m_frame.cursor_position().is_valid() && m_frame.cursor_position().node()->is_editable()) { - if (key == KeyCode::Key_Backspace) { - auto position = m_frame.cursor_position(); - - if (position.offset() == 0) - TODO(); - - m_frame.cursor_position().set_offset(position.offset() - 1); - m_edit_event_handler->handle_delete(DOM::Range::create(*position.node(), position.offset() - 1, *position.node(), position.offset())); - - return true; - } else if (key == KeyCode::Key_Delete) { - auto position = m_frame.cursor_position(); - - if (position.offset() >= downcast<DOM::Text>(position.node())->data().length()) - TODO(); - - m_edit_event_handler->handle_delete(DOM::Range::create(*position.node(), position.offset(), *position.node(), position.offset() + 1)); - - return true; - } else if (key == KeyCode::Key_Right) { - auto position = m_frame.cursor_position(); - - if (position.offset() >= downcast<DOM::Text>(position.node())->data().length()) - TODO(); - - m_frame.cursor_position().set_offset(position.offset() + 1); - - return true; - } else if (key == KeyCode::Key_Left) { - auto position = m_frame.cursor_position(); - - if (position.offset() == 0) - TODO(); - - m_frame.cursor_position().set_offset(position.offset() - 1); - - return true; - } else { - m_edit_event_handler->handle_insert(m_frame.cursor_position(), code_point); - m_frame.cursor_position().set_offset(m_frame.cursor_position().offset() + 1); - return true; - } - } - - return false; -} - -void EventHandler::set_mouse_event_tracking_layout_node(Layout::Node* layout_node) -{ - if (layout_node) - m_mouse_event_tracking_layout_node = layout_node->make_weak_ptr(); - else - m_mouse_event_tracking_layout_node = nullptr; -} - -} |