overlay_agent_mac.mm 2.9 KB

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  1. // Copyright 2019 The Chromium Authors. All rights reserved.
  2. // Use of this source code is governed by a BSD-style license that can be
  3. // found in the LICENSE file.
  4. #include "components/ui_devtools/views/overlay_agent_mac.h"
  5. #import <Cocoa/Cocoa.h>
  6. #include "components/ui_devtools/views/view_element.h"
  7. #include "components/ui_devtools/views/widget_element.h"
  8. namespace ui_devtools {
  9. OverlayAgentMac::OverlayAgentMac(DOMAgent* dom_agent)
  10. : OverlayAgentViews(dom_agent) {}
  11. OverlayAgentMac::~OverlayAgentMac() {
  12. if (is_pretarget_handler_)
  13. RemovePreTargetHandler();
  14. CHECK(!IsInObserverList());
  15. }
  16. void OverlayAgentMac::InstallPreTargetHandler() {
  17. DCHECK(!is_pretarget_handler_);
  18. is_pretarget_handler_ = true;
  19. for (NSWindow* window in [NSApp windows]) {
  20. InstallPreTargetHandlerOnWidget(
  21. views::Widget::GetWidgetForNativeWindow(window));
  22. }
  23. }
  24. void OverlayAgentMac::RemovePreTargetHandler() {
  25. DCHECK(is_pretarget_handler_);
  26. is_pretarget_handler_ = false;
  27. for (NSWindow* window in [NSApp windows]) {
  28. views::Widget* widget = views::Widget::GetWidgetForNativeWindow(window);
  29. RemovePreTargetHandlerOnWidget(widget);
  30. }
  31. }
  32. void OverlayAgentMac::OnElementAdded(UIElement* element) {
  33. if (!is_pretarget_handler_ || element->type() != UIElementType::WIDGET)
  34. return;
  35. views::Widget* widget =
  36. UIElement::GetBackingElement<views::Widget, WidgetElement>(element);
  37. InstallPreTargetHandlerOnWidget(widget);
  38. }
  39. void OverlayAgentMac::OnWidgetDestroying(views::Widget* widget) {
  40. if (!is_pretarget_handler_)
  41. return;
  42. RemovePreTargetHandlerOnWidget(widget);
  43. }
  44. int OverlayAgentMac::FindElementIdTargetedByPoint(
  45. ui::LocatedEvent* event) const {
  46. views::View* target = static_cast<views::View*>(event->target());
  47. gfx::Point p = event->root_location();
  48. views::View* targeted_view = target->GetEventHandlerForPoint(p);
  49. DCHECK(targeted_view);
  50. return dom_agent()
  51. ->element_root()
  52. ->FindUIElementIdForBackendElement<views::View>(targeted_view);
  53. }
  54. protocol::Response OverlayAgentMac::enable() {
  55. dom_agent()->AddObserver(this);
  56. return OverlayAgentViews::enable();
  57. }
  58. protocol::Response OverlayAgentMac::disable() {
  59. if (is_pretarget_handler_)
  60. RemovePreTargetHandler();
  61. hideHighlight();
  62. dom_agent()->RemoveObserver(this);
  63. return OverlayAgentViews::disable();
  64. }
  65. void OverlayAgentMac::InstallPreTargetHandlerOnWidget(views::Widget* widget) {
  66. if (!widget)
  67. return;
  68. widget->GetRootView()->AddPreTargetHandler(
  69. this, ui::EventTarget::Priority::kSystem);
  70. widget->AddObserver(this);
  71. }
  72. void OverlayAgentMac::RemovePreTargetHandlerOnWidget(views::Widget* widget) {
  73. if (!widget)
  74. return;
  75. widget->GetRootView()->RemovePreTargetHandler(this);
  76. widget->RemoveObserver(this);
  77. }
  78. // static
  79. std::unique_ptr<OverlayAgentViews> OverlayAgentViews::Create(
  80. DOMAgent* dom_agent) {
  81. return std::make_unique<OverlayAgentMac>(dom_agent);
  82. }
  83. } // namespace ui_devtools