GMenu.cpp 3.8 KB

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  1. #include <LibGUI/GAction.h>
  2. #include <LibGUI/GMenu.h>
  3. #include <LibGUI/GEventLoop.h>
  4. #include <AK/HashMap.h>
  5. static HashMap<int, GMenu*>& all_menus()
  6. {
  7. static HashMap<int, GMenu*>* map;
  8. if (!map)
  9. map = new HashMap<int, GMenu*>();
  10. return *map;
  11. }
  12. GMenu* GMenu::from_menu_id(int menu_id)
  13. {
  14. auto it = all_menus().find(menu_id);
  15. if (it == all_menus().end())
  16. return nullptr;
  17. return (*it).value;
  18. }
  19. GMenu::GMenu(const String& name)
  20. : m_name(name)
  21. {
  22. }
  23. GMenu::~GMenu()
  24. {
  25. unrealize_menu();
  26. }
  27. void GMenu::add_action(Retained<GAction> action)
  28. {
  29. m_items.append(make<GMenuItem>(m_menu_id, move(action)));
  30. }
  31. void GMenu::add_separator()
  32. {
  33. m_items.append(make<GMenuItem>(m_menu_id, GMenuItem::Separator));
  34. }
  35. void GMenu::popup(const Point& screen_position)
  36. {
  37. if (!m_menu_id)
  38. realize_menu();
  39. WSAPI_ClientMessage request;
  40. request.type = WSAPI_ClientMessage::Type::PopupMenu;
  41. request.menu.menu_id = m_menu_id;
  42. request.menu.position = screen_position;
  43. GEventLoop::post_message_to_server(request);
  44. }
  45. void GMenu::dismiss()
  46. {
  47. if (!m_menu_id)
  48. return;
  49. WSAPI_ClientMessage request;
  50. request.type = WSAPI_ClientMessage::Type::DismissMenu;
  51. request.menu.menu_id = m_menu_id;
  52. GEventLoop::post_message_to_server(request);
  53. }
  54. int GMenu::realize_menu()
  55. {
  56. WSAPI_ClientMessage request;
  57. request.type = WSAPI_ClientMessage::Type::CreateMenu;
  58. ASSERT(m_name.length() < (ssize_t)sizeof(request.text));
  59. strcpy(request.text, m_name.characters());
  60. request.text_length = m_name.length();
  61. auto response = GEventLoop::current().sync_request(request, WSAPI_ServerMessage::Type::DidCreateMenu);
  62. m_menu_id = response.menu.menu_id;
  63. ASSERT(m_menu_id > 0);
  64. for (int i = 0; i < m_items.size(); ++i) {
  65. auto& item = *m_items[i];
  66. item.set_menu_id({ }, m_menu_id);
  67. item.set_identifier({ }, i);
  68. if (item.type() == GMenuItem::Separator) {
  69. WSAPI_ClientMessage request;
  70. request.type = WSAPI_ClientMessage::Type::AddMenuSeparator;
  71. request.menu.menu_id = m_menu_id;
  72. GEventLoop::current().sync_request(request, WSAPI_ServerMessage::Type::DidAddMenuSeparator);
  73. continue;
  74. }
  75. if (item.type() == GMenuItem::Action) {
  76. auto& action = *item.action();
  77. WSAPI_ClientMessage request;
  78. request.type = WSAPI_ClientMessage::Type::AddMenuItem;
  79. request.menu.menu_id = m_menu_id;
  80. request.menu.identifier = i;
  81. request.menu.enabled = action.is_enabled();
  82. ASSERT(action.text().length() < (ssize_t)sizeof(request.text));
  83. strcpy(request.text, action.text().characters());
  84. request.text_length = action.text().length();
  85. if (action.shortcut().is_valid()) {
  86. auto shortcut_text = action.shortcut().to_string();
  87. ASSERT(shortcut_text.length() < (ssize_t)sizeof(request.menu.shortcut_text));
  88. strcpy(request.menu.shortcut_text, shortcut_text.characters());
  89. request.menu.shortcut_text_length = shortcut_text.length();
  90. } else {
  91. request.menu.shortcut_text_length = 0;
  92. }
  93. GEventLoop::current().sync_request(request, WSAPI_ServerMessage::Type::DidAddMenuItem);
  94. }
  95. }
  96. all_menus().set(m_menu_id, this);
  97. return m_menu_id;
  98. }
  99. void GMenu::unrealize_menu()
  100. {
  101. if (!m_menu_id)
  102. return;
  103. all_menus().remove(m_menu_id);
  104. WSAPI_ClientMessage request;
  105. request.type = WSAPI_ClientMessage::Type::DestroyMenu;
  106. request.menu.menu_id = m_menu_id;
  107. GEventLoop::current().sync_request(request, WSAPI_ServerMessage::Type::DidDestroyMenu);
  108. m_menu_id = 0;
  109. }
  110. GAction* GMenu::action_at(int index)
  111. {
  112. if (index >= m_items.size())
  113. return nullptr;
  114. return m_items[index]->action();
  115. }