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https://github.com/RGBCube/serenity
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LibWeb: Add per-Frame EventHandler, handle mouse events recursively
We now handle mouse events by recursing into subframes. This makes links, tooltips, etc, work inside <iframe> content.
This commit is contained in:
Andreas Kling
parent
896db187e5
commit
d1852b4547
7 changed files with 355 additions and 144 deletions
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@ -41,6 +41,7 @@
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#include <LibWeb/DOM/MouseEvent.h>
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#include <LibWeb/DOM/Text.h>
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#include <LibWeb/Dump.h>
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#include <LibWeb/Frame/EventHandler.h>
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#include <LibWeb/Frame/Frame.h>
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#include <LibWeb/Layout/LayoutDocument.h>
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#include <LibWeb/Layout/LayoutNode.h>
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@ -153,118 +154,29 @@ void PageView::paint_event(GUI::PaintEvent& event)
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void PageView::mousemove_event(GUI::MouseEvent& event)
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{
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if (!layout_root())
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return GUI::ScrollableWidget::mousemove_event(event);
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bool hovered_node_changed = false;
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bool is_hovering_link = false;
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bool was_hovering_link = document()->hovered_node() && document()->hovered_node()->is_link();
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auto result = layout_root()->hit_test(to_content_position(event.position()));
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const HTMLAnchorElement* hovered_link_element = nullptr;
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if (result.layout_node) {
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RefPtr<Node> node = result.layout_node->node();
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hovered_node_changed = node != document()->hovered_node();
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document()->set_hovered_node(node);
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if (node) {
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hovered_link_element = node->enclosing_link_element();
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if (hovered_link_element) {
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#ifdef HTML_DEBUG
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dbg() << "PageView: hovering over a link to " << hovered_link_element->href();
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#endif
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is_hovering_link = true;
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}
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auto offset = compute_mouse_event_offset(event.position(), *result.layout_node);
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node->dispatch_event(MouseEvent::create("mousemove", offset.x(), offset.y()));
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}
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if (m_in_mouse_selection) {
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layout_root()->selection().set_end({ result.layout_node, result.index_in_node });
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dump_selection("MouseMove");
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update();
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}
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if (main_frame().event_handler().handle_mousemove(to_content_position(event.position()), event.buttons(), event.modifiers())) {
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event.accept();
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return;
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}
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if (window())
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window()->set_override_cursor(is_hovering_link ? GUI::StandardCursor::Hand : GUI::StandardCursor::None);
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if (hovered_node_changed) {
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update();
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RefPtr<HTMLElement> hovered_html_element = document()->hovered_node() ? document()->hovered_node()->enclosing_html_element() : nullptr;
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if (hovered_html_element && !hovered_html_element->title().is_null()) {
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auto screen_position = screen_relative_rect().location().translated(event.position());
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GUI::Application::the().show_tooltip(hovered_html_element->title(), screen_position.translated(4, 4));
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} else {
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GUI::Application::the().hide_tooltip();
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}
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}
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if (is_hovering_link != was_hovering_link) {
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if (on_link_hover) {
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on_link_hover(hovered_link_element ? document()->complete_url(hovered_link_element->href()).to_string() : String());
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}
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}
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event.accept();
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GUI::ScrollableWidget::mousemove_event(event);
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}
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void PageView::mousedown_event(GUI::MouseEvent& event)
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{
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if (!layout_root())
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return GUI::ScrollableWidget::mousemove_event(event);
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bool hovered_node_changed = false;
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auto result = layout_root()->hit_test(to_content_position(event.position()));
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if (result.layout_node) {
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RefPtr<Node> node = result.layout_node->node();
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hovered_node_changed = node != document()->hovered_node();
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document()->set_hovered_node(node);
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if (node) {
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auto offset = compute_mouse_event_offset(event.position(), *result.layout_node);
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node->dispatch_event(MouseEvent::create("mousedown", offset.x(), offset.y()));
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if (RefPtr<HTMLAnchorElement> link = node->enclosing_link_element()) {
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dbg() << "PageView: clicking on a link to " << link->href();
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if (event.button() == GUI::MouseButton::Left) {
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if (link->href().starts_with("javascript:")) {
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run_javascript_url(link->href());
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} else {
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if (on_link_click)
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on_link_click(link->href(), link->target(), event.modifiers());
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}
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} else if (event.button() == GUI::MouseButton::Right) {
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if (on_link_context_menu_request)
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on_link_context_menu_request(link->href(), event.position().translated(screen_relative_rect().location()));
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} else if (event.button() == GUI::MouseButton::Middle) {
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if (on_link_middle_click)
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on_link_middle_click(link->href());
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}
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} else {
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if (event.button() == GUI::MouseButton::Left) {
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if (layout_root())
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layout_root()->selection().set({ result.layout_node, result.index_in_node }, {});
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dump_selection("MouseDown");
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m_in_mouse_selection = true;
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}
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}
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}
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if (main_frame().event_handler().handle_mousedown(to_content_position(event.position()), event.button(), event.modifiers())) {
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event.accept();
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return;
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}
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if (hovered_node_changed)
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update();
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event.accept();
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GUI::ScrollableWidget::mousedown_event(event);
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}
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void PageView::mouseup_event(GUI::MouseEvent& event)
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{
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if (!layout_root())
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return GUI::ScrollableWidget::mouseup_event(event);
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auto result = layout_root()->hit_test(to_content_position(event.position()));
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if (result.layout_node) {
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if (RefPtr<Node> node = result.layout_node->node()) {
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auto offset = compute_mouse_event_offset(event.position(), *result.layout_node);
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node->dispatch_event(MouseEvent::create("mouseup", offset.x(), offset.y()));
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}
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}
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if (event.button() == GUI::MouseButton::Left) {
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dump_selection("MouseUp");
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m_in_mouse_selection = false;
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if (main_frame().event_handler().handle_mouseup(to_content_position(event.position()), event.button(), event.modifiers())) {
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event.accept();
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return;
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}
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GUI::ScrollableWidget::mouseup_event(event);
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}
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void PageView::keydown_event(GUI::KeyEvent& event)
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@ -383,44 +295,12 @@ void PageView::set_document(Document* document)
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main_frame().set_document(document);
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}
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void PageView::dump_selection(const char* event_name)
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{
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UNUSED_PARAM(event_name);
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#ifdef SELECTION_DEBUG
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dbg() << event_name << " selection start: "
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<< layout_root()->selection().start().layout_node << ":" << layout_root()->selection().start().index_in_node << ", end: "
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<< layout_root()->selection().end().layout_node << ":" << layout_root()->selection().end().index_in_node;
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#endif
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}
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void PageView::did_scroll()
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{
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main_frame().set_viewport_rect(viewport_rect_in_content_coordinates());
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main_frame().did_scroll({});
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}
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Gfx::Point PageView::compute_mouse_event_offset(const Gfx::Point& event_position, const LayoutNode& layout_node) const
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{
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auto content_event_position = to_content_position(event_position);
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auto top_left_of_layout_node = layout_node.box_type_agnostic_position();
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return {
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content_event_position.x() - static_cast<int>(top_left_of_layout_node.x()),
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content_event_position.y() - static_cast<int>(top_left_of_layout_node.y())
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};
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}
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void PageView::run_javascript_url(const String& url)
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{
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ASSERT(url.starts_with("javascript:"));
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if (!document())
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return;
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auto source = url.substring_view(11, url.length() - 11);
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dbg() << "running js from url: _" << source << "_";
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document()->run_javascript(source);
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}
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void PageView::drop_event(GUI::DropEvent& event)
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{
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if (event.mime_data().has_urls()) {
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@ -432,4 +312,48 @@ void PageView::drop_event(GUI::DropEvent& event)
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ScrollableWidget::drop_event(event);
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}
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void PageView::notify_link_click(Badge<EventHandler>, Web::Frame&, const String& href, const String& target, unsigned modifiers)
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{
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if (on_link_click)
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on_link_click(href, target, modifiers);
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}
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void PageView::notify_link_middle_click(Badge<EventHandler>, Web::Frame&, const String& href, const String&, unsigned)
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{
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if (on_link_middle_click)
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on_link_middle_click(href);
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}
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Gfx::Point PageView::to_screen_position(const Web::Frame& frame, const Gfx::Point& frame_position) const
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{
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Gfx::Point offset;
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for (auto* f = &frame; f; f = f->parent()) {
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auto f_position = f->host_element()->layout_node()->box_type_agnostic_position().to_int_point();
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offset.move_by(f_position);
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}
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return screen_relative_rect().location().translated(offset).translated(frame_position);
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}
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void PageView::notify_link_context_menu_request(Badge<EventHandler>, Web::Frame& frame, const Gfx::Point& content_position, const String& href, const String&, unsigned)
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{
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if (on_link_context_menu_request)
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on_link_context_menu_request(href, to_screen_position(frame, content_position));
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}
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void PageView::notify_link_hover(Badge<EventHandler>, Web::Frame&, const String& href)
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{
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if (on_link_hover)
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on_link_hover(href);
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}
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void PageView::notify_tooltip_area_enter(Badge<EventHandler>, Web::Frame& frame, const Gfx::Point& content_position, const String& title)
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{
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GUI::Application::the().show_tooltip(title, to_screen_position(frame, content_position));
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}
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void PageView::notify_tooltip_area_leave(Badge<EventHandler>, Web::Frame&)
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{
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GUI::Application::the().hide_tooltip();
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}
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}
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