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8925ee2d3d
Much like BindToTree. This will be useful because I need to pass more information through UnbindFromTree() to speed up dir=auto for bug 1874040. Differential Revision: https://phabricator.services.mozilla.com/D202215
104 lines
3.4 KiB
C++
104 lines
3.4 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "XULMenuBarElement.h"
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#include "MenuBarListener.h"
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#include "XULButtonElement.h"
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#include "nsXULPopupManager.h"
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#include "mozilla/Assertions.h"
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#include "mozilla/dom/BindContext.h"
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#include "mozilla/AsyncEventDispatcher.h"
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#include "mozilla/Try.h"
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namespace mozilla::dom {
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NS_IMPL_CYCLE_COLLECTION_CLASS(XULMenuBarElement)
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NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(XULMenuBarElement,
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XULMenuParentElement)
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if (tmp->mListener) {
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tmp->mListener->Detach();
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tmp->mListener = nullptr;
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}
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NS_IMPL_CYCLE_COLLECTION_UNLINK_END
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(XULMenuBarElement,
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XULMenuParentElement)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mListener)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
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NS_IMPL_ISUPPORTS_CYCLE_COLLECTION_INHERITED_0(XULMenuBarElement,
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XULMenuParentElement)
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XULMenuBarElement::XULMenuBarElement(
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already_AddRefed<class NodeInfo>&& aNodeInfo)
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: XULMenuParentElement(std::move(aNodeInfo)) {}
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XULMenuBarElement::~XULMenuBarElement() { MOZ_DIAGNOSTIC_ASSERT(!mListener); }
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void XULMenuBarElement::SetActive(bool aActiveFlag) {
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// If the activity is not changed, there is nothing to do.
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if (mIsActive == aActiveFlag) {
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return;
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}
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// We can't activate a menubar outside of the document.
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if (!IsInComposedDoc()) {
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MOZ_ASSERT(!mIsActive, "How?");
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return;
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}
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if (!aActiveFlag) {
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// If there is a request to deactivate the menu bar, check to see whether
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// there is a menu popup open for the menu bar. In this case, don't
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// deactivate the menu bar.
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if (auto* activeChild = GetActiveMenuChild()) {
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if (activeChild->IsMenuPopupOpen()) {
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return;
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}
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}
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}
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mIsActive = aActiveFlag;
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if (nsXULPopupManager* pm = nsXULPopupManager::GetInstance()) {
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pm->SetActiveMenuBar(this, aActiveFlag);
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}
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if (!aActiveFlag) {
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mActiveByKeyboard = false;
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SetActiveMenuChild(nullptr);
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}
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RefPtr dispatcher = new AsyncEventDispatcher(
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this, aActiveFlag ? u"DOMMenuBarActive"_ns : u"DOMMenuBarInactive"_ns,
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CanBubble::eYes, ChromeOnlyDispatch::eNo);
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DebugOnly<nsresult> rv = dispatcher->PostDOMEvent();
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NS_ASSERTION(NS_SUCCEEDED(rv), "AsyncEventDispatcher failed to dispatch");
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}
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nsresult XULMenuBarElement::BindToTree(BindContext& aContext,
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nsINode& aParent) {
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MOZ_TRY(XULMenuParentElement::BindToTree(aContext, aParent));
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MOZ_DIAGNOSTIC_ASSERT(!mListener);
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if (aContext.InComposedDoc()) {
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mListener = new MenuBarListener(*this);
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}
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return NS_OK;
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}
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void XULMenuBarElement::UnbindFromTree(UnbindContext& aContext) {
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if (mListener) {
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mListener->Detach();
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mListener = nullptr;
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}
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if (NS_WARN_IF(mIsActive)) {
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// Clean up silently when getting removed from the document while active.
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mIsActive = false;
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if (nsXULPopupManager* pm = nsXULPopupManager::GetInstance()) {
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pm->SetActiveMenuBar(this, false);
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}
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}
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return XULMenuParentElement::UnbindFromTree(aContext);
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}
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} // namespace mozilla::dom
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