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/*
* 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/Layout/InitialContainingBlockBox.h>
#include <LibWeb/Layout/Label.h>
#include <LibWeb/Layout/LabelableNode.h>
#include <LibWeb/Layout/TextNode.h>
#include <LibWeb/Page/Frame.h>
namespace Web::Layout {
Label::Label(DOM::Document& document, HTML::HTMLLabelElement* element, NonnullRefPtr<CSS::StyleProperties> style)
: BlockBox(document, element, move(style))
{
}
Label::~Label()
{
}
void Label::handle_mousedown_on_label(Badge<TextNode>, const Gfx::IntPoint&, unsigned button)
{
if (button != GUI::MouseButton::Left)
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::Left)
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;
}
}
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