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ed84fbce47
This will allow us to use a protective NonnullRefPtr to keep paintables alive while running arbitrary JavaScript in response to events.
115 lines
3.3 KiB
C++
115 lines
3.3 KiB
C++
/*
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* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibGUI/Event.h>
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#include <LibGfx/Font.h>
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#include <LibGfx/Painter.h>
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#include <LibGfx/StylePainter.h>
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#include <LibWeb/DOM/Document.h>
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#include <LibWeb/HTML/BrowsingContext.h>
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#include <LibWeb/Layout/ButtonBox.h>
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#include <LibWeb/Layout/Label.h>
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#include <LibWeb/Painting/ButtonPaintable.h>
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namespace Web::Layout {
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ButtonBox::ButtonBox(DOM::Document& document, HTML::HTMLInputElement& element, NonnullRefPtr<CSS::StyleProperties> style)
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: LabelableNode(document, element, move(style))
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{
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}
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ButtonBox::~ButtonBox()
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{
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}
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void ButtonBox::prepare_for_replaced_layout()
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{
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set_intrinsic_width(font().width(dom_node().value()));
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set_intrinsic_height(font().glyph_height());
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}
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void ButtonBox::handle_mousedown(Badge<EventHandler>, const Gfx::IntPoint&, unsigned button, unsigned)
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{
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if (button != GUI::MouseButton::Primary || !dom_node().enabled())
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return;
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m_being_pressed = true;
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set_needs_display();
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m_tracking_mouse = true;
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browsing_context().event_handler().set_mouse_event_tracking_layout_node(this);
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}
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void ButtonBox::handle_mouseup(Badge<EventHandler>, const Gfx::IntPoint& position, unsigned button, unsigned)
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{
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if (!m_tracking_mouse || button != GUI::MouseButton::Primary || !dom_node().enabled())
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return;
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// NOTE: Handling the click may run arbitrary JS, which could disappear this node.
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NonnullRefPtr protected_this = *this;
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NonnullRefPtr protected_browsing_context = browsing_context();
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bool is_inside_node_or_label = enclosing_int_rect(paint_box()->absolute_rect()).contains(position);
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if (!is_inside_node_or_label)
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is_inside_node_or_label = Label::is_inside_associated_label(*this, position);
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if (is_inside_node_or_label)
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dom_node().did_click_button({});
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m_being_pressed = false;
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m_tracking_mouse = false;
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protected_browsing_context->event_handler().set_mouse_event_tracking_layout_node(nullptr);
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}
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void ButtonBox::handle_mousemove(Badge<EventHandler>, const Gfx::IntPoint& position, unsigned, unsigned)
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{
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if (!m_tracking_mouse || !dom_node().enabled())
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return;
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bool is_inside_node_or_label = enclosing_int_rect(paint_box()->absolute_rect()).contains(position);
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if (!is_inside_node_or_label)
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is_inside_node_or_label = Label::is_inside_associated_label(*this, position);
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if (m_being_pressed == is_inside_node_or_label)
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return;
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m_being_pressed = is_inside_node_or_label;
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set_needs_display();
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}
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void ButtonBox::handle_associated_label_mousedown(Badge<Label>)
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{
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m_being_pressed = true;
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set_needs_display();
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}
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void ButtonBox::handle_associated_label_mouseup(Badge<Label>)
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{
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// NOTE: Handling the click may run arbitrary JS, which could disappear this node.
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NonnullRefPtr protected_this = *this;
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NonnullRefPtr protected_browsing_context = browsing_context();
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dom_node().did_click_button({});
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m_being_pressed = false;
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}
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void ButtonBox::handle_associated_label_mousemove(Badge<Label>, bool is_inside_node_or_label)
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{
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if (m_being_pressed == is_inside_node_or_label)
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return;
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m_being_pressed = is_inside_node_or_label;
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set_needs_display();
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}
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RefPtr<Painting::Paintable> ButtonBox::create_paintable() const
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{
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return Painting::ButtonPaintable::create(*this);
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}
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}
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