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Diffstat (limited to 'accessible/generic/DocAccessible-inl.h')
| -rw-r--r-- | accessible/generic/DocAccessible-inl.h | 191 |
1 files changed, 191 insertions, 0 deletions
diff --git a/accessible/generic/DocAccessible-inl.h b/accessible/generic/DocAccessible-inl.h new file mode 100644 index 0000000000..493ca1fd21 --- /dev/null +++ b/accessible/generic/DocAccessible-inl.h @@ -0,0 +1,191 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* vim: set ts=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 mozilla_a11y_DocAccessible_inl_h_ +#define mozilla_a11y_DocAccessible_inl_h_ + +#include "DocAccessible.h" +#include "nsAccessibilityService.h" +#include "nsAccessiblePivot.h" +#include "NotificationController.h" +#include "States.h" +#include "nsIScrollableFrame.h" +#include "mozilla/dom/DocumentInlines.h" + +#ifdef A11Y_LOG +# include "Logging.h" +#endif + +namespace mozilla { +namespace a11y { + +inline LocalAccessible* DocAccessible::AccessibleOrTrueContainer( + nsINode* aNode, bool aNoContainerIfPruned) const { + // HTML comboboxes have no-content list accessible as an intermediate + // containing all options. + LocalAccessible* container = + GetAccessibleOrContainer(aNode, aNoContainerIfPruned); + if (container && container->IsHTMLCombobox()) { + return container->LocalFirstChild(); + } + return container; +} + +inline nsIAccessiblePivot* DocAccessible::VirtualCursor() { + if (!mVirtualCursor) { + mVirtualCursor = new nsAccessiblePivot(this); + mVirtualCursor->AddObserver(this); + } + return mVirtualCursor; +} + +inline bool DocAccessible::IsContentLoaded() const { + // eDOMLoaded flag check is used for error pages as workaround to make this + // method return correct result since error pages do not receive 'pageshow' + // event and as consequence Document::IsShowing() returns false. + return mDocumentNode && mDocumentNode->IsVisible() && + (mDocumentNode->IsShowing() || HasLoadState(eDOMLoaded)); +} + +inline bool DocAccessible::IsHidden() const { return mDocumentNode->Hidden(); } + +inline void DocAccessible::FireDelayedEvent(AccEvent* aEvent) { +#ifdef A11Y_LOG + if (logging::IsEnabled(logging::eDocLoad)) logging::DocLoadEventFired(aEvent); +#endif + + mNotificationController->QueueEvent(aEvent); +} + +inline void DocAccessible::FireDelayedEvent(uint32_t aEventType, + LocalAccessible* aTarget) { + RefPtr<AccEvent> event = new AccEvent(aEventType, aTarget); + FireDelayedEvent(event); +} + +inline void DocAccessible::BindChildDocument(DocAccessible* aDocument) { + mNotificationController->ScheduleChildDocBinding(aDocument); +} + +template <class Class, class... Args> +inline void DocAccessible::HandleNotification( + Class* aInstance, typename TNotification<Class, Args...>::Callback aMethod, + Args*... aArgs) { + if (mNotificationController) { + mNotificationController->HandleNotification<Class, Args...>( + aInstance, aMethod, aArgs...); + } +} + +inline void DocAccessible::UpdateText(nsIContent* aTextNode) { + NS_ASSERTION(mNotificationController, "The document was shut down!"); + + // Ignore the notification if initial tree construction hasn't been done yet. + if (mNotificationController && HasLoadState(eTreeConstructed)) { + mNotificationController->ScheduleTextUpdate(aTextNode); + } +} + +inline void DocAccessible::NotifyOfLoad(uint32_t aLoadEventType) { + mLoadState |= eDOMLoaded; + mLoadEventType = aLoadEventType; + + // If the document is loaded completely then network activity was presumingly + // caused by file loading. Fire busy state change event. + if (HasLoadState(eCompletelyLoaded) && IsLoadEventTarget()) { + RefPtr<AccEvent> stateEvent = + new AccStateChangeEvent(this, states::BUSY, false); + FireDelayedEvent(stateEvent); + } +} + +inline void DocAccessible::MaybeNotifyOfValueChange( + LocalAccessible* aAccessible) { + if (aAccessible->IsCombobox() || aAccessible->Role() == roles::ENTRY || + aAccessible->Role() == roles::SPINBUTTON) { + FireDelayedEvent(nsIAccessibleEvent::EVENT_TEXT_VALUE_CHANGE, aAccessible); + } +} + +inline LocalAccessible* DocAccessible::GetAccessibleEvenIfNotInMapOrContainer( + nsINode* aNode) const { + LocalAccessible* acc = GetAccessibleEvenIfNotInMap(aNode); + return acc ? acc : GetContainerAccessible(aNode); +} + +inline void DocAccessible::CreateSubtree(LocalAccessible* aChild) { + // If a focused node has been shown then it could mean its frame was recreated + // while the node stays focused and we need to fire focus event on + // the accessible we just created. If the queue contains a focus event for + // this node already then it will be suppressed by this one. + LocalAccessible* focusedAcc = nullptr; + CacheChildrenInSubtree(aChild, &focusedAcc); + +#ifdef A11Y_LOG + if (logging::IsEnabled(logging::eVerbose)) { + logging::Tree("TREE", "Created subtree", aChild); + } +#endif + + // Fire events for ARIA elements. + if (aChild->HasARIARole()) { + roles::Role role = aChild->ARIARole(); + if (role == roles::MENUPOPUP) { + FireDelayedEvent(nsIAccessibleEvent::EVENT_MENUPOPUP_START, aChild); + } else if (role == roles::ALERT) { + FireDelayedEvent(nsIAccessibleEvent::EVENT_ALERT, aChild); + } + } + + // XXX: do we really want to send focus to focused DOM node not taking into + // account active item? + if (focusedAcc) { + FocusMgr()->DispatchFocusEvent(this, focusedAcc); + SelectionMgr()->SetControlSelectionListener( + focusedAcc->GetNode()->AsElement()); + } +} + +inline DocAccessible::AttrRelProviders* DocAccessible::GetRelProviders( + dom::Element* aElement, const nsAString& aID) const { + DependentIDsHashtable* hash = mDependentIDsHashes.Get( + aElement->GetUncomposedDocOrConnectedShadowRoot()); + if (hash) { + return hash->Get(aID); + } + return nullptr; +} + +inline DocAccessible::AttrRelProviders* DocAccessible::GetOrCreateRelProviders( + dom::Element* aElement, const nsAString& aID) { + dom::DocumentOrShadowRoot* docOrShadowRoot = + aElement->GetUncomposedDocOrConnectedShadowRoot(); + DependentIDsHashtable* hash = + mDependentIDsHashes.GetOrInsertNew(docOrShadowRoot); + + return hash->GetOrInsertNew(aID); +} + +inline void DocAccessible::RemoveRelProvidersIfEmpty(dom::Element* aElement, + const nsAString& aID) { + dom::DocumentOrShadowRoot* docOrShadowRoot = + aElement->GetUncomposedDocOrConnectedShadowRoot(); + DependentIDsHashtable* hash = mDependentIDsHashes.Get(docOrShadowRoot); + if (hash) { + AttrRelProviders* providers = hash->Get(aID); + if (providers && providers->Length() == 0) { + hash->Remove(aID); + if (mDependentIDsHashes.IsEmpty()) { + mDependentIDsHashes.Remove(docOrShadowRoot); + } + } + } +} + +} // namespace a11y +} // namespace mozilla + +#endif |