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Diffstat (limited to 'accessible/generic/DocAccessible-inl.h')
-rw-r--r-- | accessible/generic/DocAccessible-inl.h | 189 |
1 files changed, 189 insertions, 0 deletions
diff --git a/accessible/generic/DocAccessible-inl.h b/accessible/generic/DocAccessible-inl.h new file mode 100644 index 000000000..af660ff47 --- /dev/null +++ b/accessible/generic/DocAccessible-inl.h @@ -0,0 +1,189 @@ +/* -*- 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 "nsIDocumentInlines.h" + +#ifdef A11Y_LOG +#include "Logging.h" +#endif + +namespace mozilla { +namespace a11y { + +inline Accessible* +DocAccessible::AccessibleOrTrueContainer(nsINode* aNode) const +{ + // HTML comboboxes have no-content list accessible as an intermediate + // containing all options. + Accessible* container = GetAccessibleOrContainer(aNode); + if (container && container->IsHTMLCombobox()) { + return container->FirstChild(); + } + return container; +} + +inline nsIAccessiblePivot* +DocAccessible::VirtualCursor() +{ + if (!mVirtualCursor) { + mVirtualCursor = new nsAccessiblePivot(this); + mVirtualCursor->AddObserver(this); + } + return mVirtualCursor; +} + +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, Accessible* aTarget) +{ + RefPtr<AccEvent> event = new AccEvent(aEventType, aTarget); + FireDelayedEvent(event); +} + +inline void +DocAccessible::BindChildDocument(DocAccessible* aDocument) +{ + mNotificationController->ScheduleChildDocBinding(aDocument); +} + +template<class Class, class Arg> +inline void +DocAccessible::HandleNotification(Class* aInstance, + typename TNotification<Class, Arg>::Callback aMethod, + Arg* aArg) +{ + if (mNotificationController) { + mNotificationController->HandleNotification<Class, Arg>(aInstance, + aMethod, aArg); + } +} + +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::AddScrollListener() +{ + // Delay scroll initializing until the document has a root frame. + if (!mPresShell->GetRootFrame()) + return; + + mDocFlags |= eScrollInitialized; + nsIScrollableFrame* sf = mPresShell->GetRootScrollFrameAsScrollable(); + if (sf) { + sf->AddScrollPositionListener(this); + +#ifdef A11Y_LOG + if (logging::IsEnabled(logging::eDocCreate)) + logging::Text("add scroll listener"); +#endif + } +} + +inline void +DocAccessible::RemoveScrollListener() +{ + nsIScrollableFrame* sf = mPresShell->GetRootScrollFrameAsScrollable(); + if (sf) + sf->RemoveScrollPositionListener(this); +} + +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(Accessible* aAccessible) +{ + a11y::role role = aAccessible->Role(); + if (role == roles::ENTRY || role == roles::COMBOBOX) + FireDelayedEvent(nsIAccessibleEvent::EVENT_TEXT_VALUE_CHANGE, aAccessible); +} + +inline Accessible* +DocAccessible::GetAccessibleEvenIfNotInMapOrContainer(nsINode* aNode) const +{ + Accessible* acc = GetAccessibleEvenIfNotInMap(aNode); + return acc ? acc : GetContainerAccessible(aNode); +} + +inline void +DocAccessible::CreateSubtree(Accessible* 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. + Accessible* 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()); + } +} + +} // namespace a11y +} // namespace mozilla + +#endif |