RadioButton.cpp 5.0 KB

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  1. /*
  2. * Copyright (c) 2021, Tim Flynn <trflynn89@pm.me>
  3. * All rights reserved.
  4. *
  5. * Redistribution and use in source and binary forms, with or without
  6. * modification, are permitted provided that the following conditions are met:
  7. *
  8. * 1. Redistributions of source code must retain the above copyright notice, this
  9. * list of conditions and the following disclaimer.
  10. *
  11. * 2. Redistributions in binary form must reproduce the above copyright notice,
  12. * this list of conditions and the following disclaimer in the documentation
  13. * and/or other materials provided with the distribution.
  14. *
  15. * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  16. * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  17. * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  18. * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
  19. * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  20. * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  21. * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  22. * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  23. * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  24. * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  25. */
  26. #include <LibGUI/Event.h>
  27. #include <LibGfx/Painter.h>
  28. #include <LibGfx/StylePainter.h>
  29. #include <LibWeb/DOM/Document.h>
  30. #include <LibWeb/Layout/Label.h>
  31. #include <LibWeb/Layout/RadioButton.h>
  32. #include <LibWeb/Page/Frame.h>
  33. namespace Web::Layout {
  34. RadioButton::RadioButton(DOM::Document& document, HTML::HTMLInputElement& element, NonnullRefPtr<CSS::StyleProperties> style)
  35. : LabelableNode(document, element, move(style))
  36. {
  37. set_has_intrinsic_width(true);
  38. set_has_intrinsic_height(true);
  39. set_intrinsic_width(12);
  40. set_intrinsic_height(12);
  41. }
  42. RadioButton::~RadioButton()
  43. {
  44. }
  45. void RadioButton::paint(PaintContext& context, PaintPhase phase)
  46. {
  47. if (!is_visible())
  48. return;
  49. LabelableNode::paint(context, phase);
  50. if (phase == PaintPhase::Foreground) {
  51. Gfx::StylePainter::paint_radio_button(context.painter(), enclosing_int_rect(absolute_rect()), context.palette(), dom_node().checked(), m_being_pressed);
  52. }
  53. }
  54. void RadioButton::handle_mousedown(Badge<EventHandler>, const Gfx::IntPoint&, unsigned button, unsigned)
  55. {
  56. if (button != GUI::MouseButton::Left || !dom_node().enabled())
  57. return;
  58. m_being_pressed = true;
  59. set_needs_display();
  60. m_tracking_mouse = true;
  61. frame().event_handler().set_mouse_event_tracking_layout_node(this);
  62. }
  63. void RadioButton::handle_mouseup(Badge<EventHandler>, const Gfx::IntPoint& position, unsigned button, unsigned)
  64. {
  65. if (!m_tracking_mouse || button != GUI::MouseButton::Left || !dom_node().enabled())
  66. return;
  67. // NOTE: Changing the checked state of the DOM node may run arbitrary JS, which could disappear this node.
  68. NonnullRefPtr protect = *this;
  69. bool is_inside_node_or_label = enclosing_int_rect(absolute_rect()).contains(position);
  70. if (!is_inside_node_or_label)
  71. is_inside_node_or_label = Label::is_inside_associated_label(*this, position);
  72. if (is_inside_node_or_label)
  73. set_checked_within_group();
  74. m_being_pressed = false;
  75. m_tracking_mouse = false;
  76. frame().event_handler().set_mouse_event_tracking_layout_node(nullptr);
  77. }
  78. void RadioButton::handle_mousemove(Badge<EventHandler>, const Gfx::IntPoint& position, unsigned, unsigned)
  79. {
  80. if (!m_tracking_mouse || !dom_node().enabled())
  81. return;
  82. bool is_inside_node_or_label = enclosing_int_rect(absolute_rect()).contains(position);
  83. if (!is_inside_node_or_label)
  84. is_inside_node_or_label = Label::is_inside_associated_label(*this, position);
  85. if (m_being_pressed == is_inside_node_or_label)
  86. return;
  87. m_being_pressed = is_inside_node_or_label;
  88. set_needs_display();
  89. }
  90. void RadioButton::handle_associated_label_mousedown(Badge<Label>)
  91. {
  92. m_being_pressed = true;
  93. set_needs_display();
  94. }
  95. void RadioButton::handle_associated_label_mouseup(Badge<Label>)
  96. {
  97. // NOTE: Changing the checked state of the DOM node may run arbitrary JS, which could disappear this node.
  98. NonnullRefPtr protect = *this;
  99. set_checked_within_group();
  100. m_being_pressed = false;
  101. }
  102. void RadioButton::handle_associated_label_mousemove(Badge<Label>, bool is_inside_node_or_label)
  103. {
  104. if (m_being_pressed == is_inside_node_or_label)
  105. return;
  106. m_being_pressed = is_inside_node_or_label;
  107. set_needs_display();
  108. }
  109. void RadioButton::set_checked_within_group()
  110. {
  111. if (dom_node().checked())
  112. return;
  113. dom_node().set_checked(true);
  114. String name = dom_node().name();
  115. document().for_each_in_inclusive_subtree_of_type<HTML::HTMLInputElement>([&](auto& element) {
  116. if (element.checked() && (element.layout_node() != this) && (element.name() == name))
  117. element.set_checked(false);
  118. return IterationDecision::Continue;
  119. });
  120. }
  121. }