/* * Copyright (c) 2021, Tim Flynn <trflynn89@pm.me> * * SPDX-License-Identifier: BSD-2-Clause */ #include <LibGUI/Event.h> #include <LibGfx/Painter.h> #include <LibGfx/StylePainter.h> #include <LibWeb/DOM/Document.h> #include <LibWeb/DOM/Element.h> #include <LibWeb/HTML/BrowsingContext.h> #include <LibWeb/Layout/InitialContainingBlock.h> #include <LibWeb/Layout/Label.h> #include <LibWeb/Layout/LabelableNode.h> #include <LibWeb/Layout/TextNode.h> namespace Web::Layout { Label::Label(DOM::Document& document, HTML::HTMLLabelElement* element, NonnullRefPtr<CSS::StyleProperties> style) : BlockContainer(document, element, move(style)) { } Label::~Label() { } void Label::handle_mousedown_on_label(Badge<TextNode>, const Gfx::IntPoint&, unsigned button) { if (button != GUI::MouseButton::Primary) return; if (auto* control = control_node(); control) control->handle_associated_label_mousedown({}); m_tracking_mouse = true; } void Label::handle_mouseup_on_label(Badge<TextNode>, const Gfx::IntPoint& position, unsigned button) { if (!m_tracking_mouse || button != GUI::MouseButton::Primary) return; // NOTE: Changing the checked state of the DOM node may run arbitrary JS, which could disappear this node. NonnullRefPtr protect = *this; if (auto* control = control_node(); control) { bool is_inside_control = enclosing_int_rect(control->absolute_rect()).contains(position); bool is_inside_label = enclosing_int_rect(absolute_rect()).contains(position); if (is_inside_control || is_inside_label) control->handle_associated_label_mouseup({}); } m_tracking_mouse = false; } void Label::handle_mousemove_on_label(Badge<TextNode>, const Gfx::IntPoint& position, unsigned) { if (!m_tracking_mouse) return; if (auto* control = control_node(); control) { bool is_inside_control = enclosing_int_rect(control->absolute_rect()).contains(position); bool is_inside_label = enclosing_int_rect(absolute_rect()).contains(position); control->handle_associated_label_mousemove({}, is_inside_control || is_inside_label); } } bool Label::is_inside_associated_label(LabelableNode& control, const Gfx::IntPoint& position) { if (auto* label = label_for_control_node(control); label) return enclosing_int_rect(label->absolute_rect()).contains(position); return false; } bool Label::is_associated_label_hovered(LabelableNode& control) { if (auto* label = label_for_control_node(control); label) { if (label->document().hovered_node() == &label->dom_node()) return true; if (auto* child = label->first_child_of_type<TextNode>(); child) return label->document().hovered_node() == &child->dom_node(); } return false; } Label* Label::label_for_control_node(LabelableNode& control) { Label* label = nullptr; if (!control.document().layout_node()) return label; String id = control.dom_node().attribute(HTML::AttributeNames::id); if (id.is_empty()) return label; control.document().layout_node()->for_each_in_inclusive_subtree_of_type<Label>([&](auto& node) { if (node.dom_node().for_() == id) { label = &node; return IterationDecision::Break; } return IterationDecision::Continue; }); // FIXME: The spec also allows for associating a label with a labelable node by putting the // labelable node inside the label. return label; } LabelableNode* Label::control_node() { LabelableNode* control = nullptr; if (!document().layout_node()) return control; String for_ = dom_node().for_(); if (for_.is_empty()) return control; document().layout_node()->for_each_in_inclusive_subtree_of_type<LabelableNode>([&](auto& node) { if (node.dom_node().attribute(HTML::AttributeNames::id) == for_) { control = &node; return IterationDecision::Break; } return IterationDecision::Continue; }); // FIXME: The spec also allows for associating a label with a labelable node by putting the // labelable node inside the label. return control; } }