HTMLProgressElement.cpp 3.5 KB

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  1. /*
  2. * Copyright (c) 2020-2022, the SerenityOS developers.
  3. * Copyright (c) 2022, MacDue <macdue@dueutil.tech>
  4. * Copyright (c) 2023, Bastiaan van der Plaat <bastiaan.v.d.plaat@gmail.com>
  5. *
  6. * SPDX-License-Identifier: BSD-2-Clause
  7. */
  8. #include <LibWeb/DOM/Document.h>
  9. #include <LibWeb/DOM/ShadowRoot.h>
  10. #include <LibWeb/HTML/HTMLProgressElement.h>
  11. #include <LibWeb/HTML/Numbers.h>
  12. namespace Web::HTML {
  13. JS_DEFINE_ALLOCATOR(HTMLProgressElement);
  14. HTMLProgressElement::HTMLProgressElement(DOM::Document& document, DOM::QualifiedName qualified_name)
  15. : HTMLElement(document, move(qualified_name))
  16. {
  17. }
  18. HTMLProgressElement::~HTMLProgressElement() = default;
  19. void HTMLProgressElement::initialize(JS::Realm& realm)
  20. {
  21. Base::initialize(realm);
  22. set_prototype(&Bindings::ensure_web_prototype<Bindings::HTMLProgressElementPrototype>(realm, "HTMLProgressElement"_fly_string));
  23. }
  24. void HTMLProgressElement::visit_edges(Cell::Visitor& visitor)
  25. {
  26. Base::visit_edges(visitor);
  27. visitor.visit(m_progress_value_element);
  28. }
  29. // https://html.spec.whatwg.org/multipage/form-elements.html#dom-progress-value
  30. double HTMLProgressElement::value() const
  31. {
  32. auto maybe_value_string = get_attribute(HTML::AttributeNames::value);
  33. if (!maybe_value_string.has_value())
  34. return 0;
  35. auto maybe_value = parse_floating_point_number(maybe_value_string.value());
  36. if (!maybe_value.has_value())
  37. return 0;
  38. return clamp(maybe_value.value(), 0, max());
  39. }
  40. WebIDL::ExceptionOr<void> HTMLProgressElement::set_value(double value)
  41. {
  42. if (value < 0 || value > max())
  43. return {};
  44. TRY(set_attribute(HTML::AttributeNames::value, MUST(String::number(value))));
  45. update_progress_value_element();
  46. document().invalidate_layout();
  47. return {};
  48. }
  49. // https://html.spec.whatwg.org/multipage/form-elements.html#dom-progress-max
  50. double HTMLProgressElement::max() const
  51. {
  52. auto maybe_max_string = get_attribute(HTML::AttributeNames::max);
  53. if (!maybe_max_string.has_value())
  54. return 1;
  55. auto maybe_max = parse_floating_point_number(maybe_max_string.value());
  56. if (!maybe_max.has_value())
  57. return 1;
  58. return AK::max(maybe_max.value(), 0);
  59. }
  60. WebIDL::ExceptionOr<void> HTMLProgressElement::set_max(double value)
  61. {
  62. if (value <= 0)
  63. return {};
  64. TRY(set_attribute(HTML::AttributeNames::max, MUST(String::number(value))));
  65. update_progress_value_element();
  66. document().invalidate_layout();
  67. return {};
  68. }
  69. double HTMLProgressElement::position() const
  70. {
  71. if (!is_determinate())
  72. return -1;
  73. return value() / max();
  74. }
  75. void HTMLProgressElement::inserted()
  76. {
  77. create_shadow_tree_if_needed();
  78. }
  79. void HTMLProgressElement::removed_from(DOM::Node*)
  80. {
  81. set_shadow_root(nullptr);
  82. }
  83. void HTMLProgressElement::create_shadow_tree_if_needed()
  84. {
  85. if (shadow_root_internal())
  86. return;
  87. auto shadow_root = heap().allocate<DOM::ShadowRoot>(realm(), document(), *this, Bindings::ShadowRootMode::Closed);
  88. set_shadow_root(shadow_root);
  89. auto progress_bar_element = heap().allocate<ProgressBarElement>(realm(), document());
  90. MUST(shadow_root->append_child(*progress_bar_element));
  91. m_progress_value_element = heap().allocate<ProgressValueElement>(realm(), document());
  92. MUST(progress_bar_element->append_child(*m_progress_value_element));
  93. update_progress_value_element();
  94. }
  95. void HTMLProgressElement::update_progress_value_element()
  96. {
  97. MUST(m_progress_value_element->set_attribute(HTML::AttributeNames::style, MUST(String::formatted("width: {}%;", position() * 100))));
  98. }
  99. }