Add m-esr52 at 52.6.0

1 files changed, 132 insertions, 0 deletions

diff --git a/dom/xbl/nsXBLWindowKeyHandler.h b/dom/xbl/nsXBLWindowKeyHandler.h
new file mode 100644
index 000000000..0509e85e4
--- /dev/null
+++ b/dom/xbl/nsXBLWindowKeyHandler.h
@@ -0,0 +1,132 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef nsXBLWindowKeyHandler_h__
+#define nsXBLWindowKeyHandler_h__
+
+#include "mozilla/EventForwards.h"
+#include "nsWeakPtr.h"
+#include "nsIDOMEventListener.h"
+
+class nsIAtom;
+class nsIDOMElement;
+class nsIDOMKeyEvent;
+class nsXBLSpecialDocInfo;
+class nsXBLPrototypeHandler;
+
+namespace mozilla {
+class EventListenerManager;
+namespace dom {
+class Element;
+class EventTarget;
+struct IgnoreModifierState;
+} // namespace dom
+} // namespace mozilla
+
+class nsXBLWindowKeyHandler : public nsIDOMEventListener
+{
+  typedef mozilla::dom::IgnoreModifierState IgnoreModifierState;
+  typedef mozilla::EventListenerManager EventListenerManager;
+
+public:
+  nsXBLWindowKeyHandler(nsIDOMElement* aElement, mozilla::dom::EventTarget* aTarget);
+
+  void InstallKeyboardEventListenersTo(
+         EventListenerManager* aEventListenerManager);
+  void RemoveKeyboardEventListenersFrom(
+         EventListenerManager* aEventListenerManager);
+
+  NS_DECL_ISUPPORTS
+  NS_DECL_NSIDOMEVENTLISTENER
+
+protected:
+  virtual ~nsXBLWindowKeyHandler();
+
+  nsresult WalkHandlers(nsIDOMKeyEvent* aKeyEvent, nsIAtom* aEventType);
+
+  // walk the handlers, looking for one to handle the event
+  bool WalkHandlersInternal(nsIDOMKeyEvent* aKeyEvent,
+                            nsIAtom* aEventType,
+                            nsXBLPrototypeHandler* aHandler,
+                            bool aExecute,
+                            bool* aOutReservedForChrome = nullptr);
+
+  // walk the handlers for aEvent, aCharCode and aIgnoreModifierState. Execute
+  // it if aExecute = true.
+  bool WalkHandlersAndExecute(nsIDOMKeyEvent* aKeyEvent, nsIAtom* aEventType,
+                              nsXBLPrototypeHandler* aHandler,
+                              uint32_t aCharCode,
+                              const IgnoreModifierState& aIgnoreModifierState,
+                              bool aExecute,
+                              bool* aOutReservedForChrome = nullptr);
+
+  // HandleEvent function for the capturing phase in the default event group.
+  void HandleEventOnCaptureInDefaultEventGroup(nsIDOMKeyEvent* aEvent);
+  // HandleEvent function for the capturing phase in the system event group.
+  void HandleEventOnCaptureInSystemEventGroup(nsIDOMKeyEvent* aEvent);
+
+  // Check if any handler would handle the given event. Optionally returns
+  // whether the command handler for the event is marked with the "reserved"
+  // attribute.
+  bool HasHandlerForEvent(nsIDOMKeyEvent* aEvent,
+                          bool* aOutReservedForChrome = nullptr);
+
+  // Returns event type for matching between aWidgetKeyboardEvent and
+  // shortcut key handlers.  This is used for calling WalkHandlers(),
+  // WalkHandlersInternal() and WalkHandlersAndExecute().
+  nsIAtom* ConvertEventToDOMEventType(
+             const mozilla::WidgetKeyboardEvent& aWidgetKeyboardEvent) const;
+
+  // lazily load the handlers. Overridden to handle being attached
+  // to a particular element rather than the document
+  nsresult EnsureHandlers();
+
+  // Is an HTML editable element focused
+  bool IsHTMLEditableFieldFocused();
+
+  // Returns the element which was passed as a parameter to the constructor,
+  // unless the element has been removed from the document. Optionally returns
+  // whether the disabled attribute is set on the element (assuming the element
+  // is non-null).
+  already_AddRefed<mozilla::dom::Element> GetElement(bool* aIsDisabled = nullptr);
+
+  /**
+   * GetElementForHandler() retrieves an element for the handler.  The element
+   * may be a command element or a key element.
+   *
+   * @param aHandler           The handler.
+   * @param aElementForHandler Must not be nullptr.  The element is returned to
+   *                           this.
+   * @return                   true if the handler is valid.  Otherwise, false.
+   */
+  bool GetElementForHandler(nsXBLPrototypeHandler* aHandler,
+                            mozilla::dom::Element** aElementForHandler);
+
+  /**
+   * IsExecutableElement() returns true if aElement is executable.
+   * Otherwise, false. aElement should be a command element or a key element.
+   */
+  bool IsExecutableElement(mozilla::dom::Element* aElement) const;
+
+  // Using weak pointer to the DOM Element.
+  nsWeakPtr              mWeakPtrForElement;
+  mozilla::dom::EventTarget* mTarget; // weak ref
+
+  // these are not owning references; the prototype handlers are owned
+  // by the prototype bindings which are owned by the docinfo.
+  nsXBLPrototypeHandler* mHandler;     // platform bindings
+  nsXBLPrototypeHandler* mUserHandler; // user-specific bindings
+
+  // holds document info about bindings
+  static nsXBLSpecialDocInfo* sXBLSpecialDocInfo;
+  static uint32_t sRefCnt;
+};
+
+already_AddRefed<nsXBLWindowKeyHandler>
+NS_NewXBLWindowKeyHandler(nsIDOMElement* aElement,
+                          mozilla::dom::EventTarget* aTarget);
+
+#endif