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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
commit5f8de423f190bbb79a62f804151bc24824fa32d8 (patch)
tree10027f336435511475e392454359edea8e25895d /accessible/xul/XULTreeAccessible.cpp
parent49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff)
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Add m-esr52 at 52.6.0
Diffstat (limited to 'accessible/xul/XULTreeAccessible.cpp')
-rw-r--r--accessible/xul/XULTreeAccessible.cpp1184
1 files changed, 1184 insertions, 0 deletions
diff --git a/accessible/xul/XULTreeAccessible.cpp b/accessible/xul/XULTreeAccessible.cpp
new file mode 100644
index 000000000..88153dc2d
--- /dev/null
+++ b/accessible/xul/XULTreeAccessible.cpp
@@ -0,0 +1,1184 @@
+/* -*- 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/. */
+
+#include "XULTreeAccessible.h"
+
+#include "Accessible-inl.h"
+#include "DocAccessible-inl.h"
+#include "nsAccCache.h"
+#include "nsAccUtils.h"
+#include "nsCoreUtils.h"
+#include "nsEventShell.h"
+#include "DocAccessible.h"
+#include "Relation.h"
+#include "Role.h"
+#include "States.h"
+#include "XULTreeGridAccessible.h"
+#include "nsQueryObject.h"
+
+#include "nsComponentManagerUtils.h"
+#include "nsIAccessibleRelation.h"
+#include "nsIAutoCompleteInput.h"
+#include "nsIAutoCompletePopup.h"
+#include "nsIBoxObject.h"
+#include "nsIDOMXULElement.h"
+#include "nsIDOMXULMenuListElement.h"
+#include "nsIDOMXULMultSelectCntrlEl.h"
+#include "nsIDOMXULTreeElement.h"
+#include "nsITreeSelection.h"
+#include "nsIMutableArray.h"
+#include "nsTreeBodyFrame.h"
+#include "nsTreeColumns.h"
+#include "nsTreeUtils.h"
+
+using namespace mozilla::a11y;
+
+////////////////////////////////////////////////////////////////////////////////
+// XULTreeAccessible
+////////////////////////////////////////////////////////////////////////////////
+
+XULTreeAccessible::
+ XULTreeAccessible(nsIContent* aContent, DocAccessible* aDoc,
+ nsTreeBodyFrame* aTreeFrame) :
+ AccessibleWrap(aContent, aDoc),
+ mAccessibleCache(kDefaultTreeCacheLength)
+{
+ mType = eXULTreeType;
+ mGenericTypes |= eSelect;
+
+ nsCOMPtr<nsITreeView> view = aTreeFrame->GetExistingView();
+ mTreeView = view;
+
+ mTree = nsCoreUtils::GetTreeBoxObject(aContent);
+ NS_ASSERTION(mTree, "Can't get mTree!\n");
+
+ nsIContent* parentContent = mContent->GetParent();
+ if (parentContent) {
+ nsCOMPtr<nsIAutoCompletePopup> autoCompletePopupElm =
+ do_QueryInterface(parentContent);
+ if (autoCompletePopupElm)
+ mGenericTypes |= eAutoCompletePopup;
+ }
+}
+
+XULTreeAccessible::~XULTreeAccessible()
+{
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// XULTreeAccessible: nsISupports and cycle collection implementation
+
+NS_IMPL_CYCLE_COLLECTION_INHERITED(XULTreeAccessible, Accessible,
+ mTree, mAccessibleCache)
+
+NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION_INHERITED(XULTreeAccessible)
+NS_INTERFACE_MAP_END_INHERITING(Accessible)
+
+NS_IMPL_ADDREF_INHERITED(XULTreeAccessible, Accessible)
+NS_IMPL_RELEASE_INHERITED(XULTreeAccessible, Accessible)
+
+////////////////////////////////////////////////////////////////////////////////
+// XULTreeAccessible: Accessible implementation
+
+uint64_t
+XULTreeAccessible::NativeState()
+{
+ // Get focus status from base class.
+ uint64_t state = Accessible::NativeState();
+
+ // readonly state
+ state |= states::READONLY;
+
+ // multiselectable state.
+ if (!mTreeView)
+ return state;
+
+ nsCOMPtr<nsITreeSelection> selection;
+ mTreeView->GetSelection(getter_AddRefs(selection));
+ NS_ENSURE_TRUE(selection, state);
+
+ bool isSingle = false;
+ nsresult rv = selection->GetSingle(&isSingle);
+ NS_ENSURE_SUCCESS(rv, state);
+
+ if (!isSingle)
+ state |= states::MULTISELECTABLE;
+
+ return state;
+}
+
+void
+XULTreeAccessible::Value(nsString& aValue)
+{
+ aValue.Truncate();
+ if (!mTreeView)
+ return;
+
+ // Return the value is the first selected child.
+ nsCOMPtr<nsITreeSelection> selection;
+ mTreeView->GetSelection(getter_AddRefs(selection));
+ if (!selection)
+ return;
+
+ int32_t currentIndex;
+ selection->GetCurrentIndex(&currentIndex);
+ if (currentIndex >= 0) {
+ nsCOMPtr<nsITreeColumn> keyCol;
+
+ nsCOMPtr<nsITreeColumns> cols;
+ mTree->GetColumns(getter_AddRefs(cols));
+ if (cols)
+ cols->GetKeyColumn(getter_AddRefs(keyCol));
+
+ mTreeView->GetCellText(currentIndex, keyCol, aValue);
+ }
+
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// XULTreeAccessible: Accessible implementation
+
+void
+XULTreeAccessible::Shutdown()
+{
+ if (mDoc && !mDoc->IsDefunct()) {
+ UnbindCacheEntriesFromDocument(mAccessibleCache);
+ }
+
+ mTree = nullptr;
+ mTreeView = nullptr;
+
+ AccessibleWrap::Shutdown();
+}
+
+role
+XULTreeAccessible::NativeRole()
+{
+ // No primary column means we're in a list. In fact, history and mail turn off
+ // the primary flag when switching to a flat view.
+
+ nsIContent* child = nsTreeUtils::GetDescendantChild(mContent, nsGkAtoms::treechildren);
+ NS_ASSERTION(child, "tree without treechildren!");
+ nsTreeBodyFrame* treeFrame = do_QueryFrame(child->GetPrimaryFrame());
+ NS_ASSERTION(treeFrame, "xul tree accessible for tree without a frame!");
+ if (!treeFrame)
+ return roles::LIST;
+
+ RefPtr<nsTreeColumns> cols = treeFrame->Columns();
+ nsCOMPtr<nsITreeColumn> primaryCol;
+ cols->GetPrimaryColumn(getter_AddRefs(primaryCol));
+
+ return primaryCol ? roles::OUTLINE : roles::LIST;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// XULTreeAccessible: Accessible implementation (DON'T put methods here)
+
+Accessible*
+XULTreeAccessible::ChildAtPoint(int32_t aX, int32_t aY,
+ EWhichChildAtPoint aWhichChild)
+{
+ nsIFrame *frame = GetFrame();
+ if (!frame)
+ return nullptr;
+
+ nsPresContext *presContext = frame->PresContext();
+ nsIPresShell* presShell = presContext->PresShell();
+
+ nsIFrame *rootFrame = presShell->GetRootFrame();
+ NS_ENSURE_TRUE(rootFrame, nullptr);
+
+ nsIntRect rootRect = rootFrame->GetScreenRect();
+
+ int32_t clientX = presContext->DevPixelsToIntCSSPixels(aX) - rootRect.x;
+ int32_t clientY = presContext->DevPixelsToIntCSSPixels(aY) - rootRect.y;
+
+ int32_t row = -1;
+ nsCOMPtr<nsITreeColumn> column;
+ nsAutoString childEltUnused;
+ mTree->GetCellAt(clientX, clientY, &row, getter_AddRefs(column),
+ childEltUnused);
+
+ // If we failed to find tree cell for the given point then it might be
+ // tree columns.
+ if (row == -1 || !column)
+ return AccessibleWrap::ChildAtPoint(aX, aY, aWhichChild);
+
+ Accessible* child = GetTreeItemAccessible(row);
+ if (aWhichChild == eDeepestChild && child) {
+ // Look for accessible cell for the found item accessible.
+ RefPtr<XULTreeItemAccessibleBase> treeitem = do_QueryObject(child);
+
+ Accessible* cell = treeitem->GetCellAccessible(column);
+ if (cell)
+ child = cell;
+ }
+
+ return child;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// XULTreeAccessible: SelectAccessible
+
+Accessible*
+XULTreeAccessible::CurrentItem()
+{
+ if (!mTreeView)
+ return nullptr;
+
+ nsCOMPtr<nsITreeSelection> selection;
+ mTreeView->GetSelection(getter_AddRefs(selection));
+ if (selection) {
+ int32_t currentIndex = -1;
+ selection->GetCurrentIndex(&currentIndex);
+ if (currentIndex >= 0)
+ return GetTreeItemAccessible(currentIndex);
+ }
+
+ return nullptr;
+}
+
+void
+XULTreeAccessible::SetCurrentItem(Accessible* aItem)
+{
+ NS_ERROR("XULTreeAccessible::SetCurrentItem not implemented");
+}
+
+void
+XULTreeAccessible::SelectedItems(nsTArray<Accessible*>* aItems)
+{
+ if (!mTreeView)
+ return;
+
+ nsCOMPtr<nsITreeSelection> selection;
+ mTreeView->GetSelection(getter_AddRefs(selection));
+ if (!selection)
+ return;
+
+ int32_t rangeCount = 0;
+ selection->GetRangeCount(&rangeCount);
+ for (int32_t rangeIdx = 0; rangeIdx < rangeCount; rangeIdx++) {
+ int32_t firstIdx = 0, lastIdx = -1;
+ selection->GetRangeAt(rangeIdx, &firstIdx, &lastIdx);
+ for (int32_t rowIdx = firstIdx; rowIdx <= lastIdx; rowIdx++) {
+ Accessible* item = GetTreeItemAccessible(rowIdx);
+ if (item)
+ aItems->AppendElement(item);
+ }
+ }
+}
+
+uint32_t
+XULTreeAccessible::SelectedItemCount()
+{
+ if (!mTreeView)
+ return 0;
+
+ nsCOMPtr<nsITreeSelection> selection;
+ mTreeView->GetSelection(getter_AddRefs(selection));
+ if (selection) {
+ int32_t count = 0;
+ selection->GetCount(&count);
+ return count;
+ }
+
+ return 0;
+}
+
+bool
+XULTreeAccessible::AddItemToSelection(uint32_t aIndex)
+{
+ if (!mTreeView)
+ return false;
+
+ nsCOMPtr<nsITreeSelection> selection;
+ mTreeView->GetSelection(getter_AddRefs(selection));
+ if (selection) {
+ bool isSelected = false;
+ selection->IsSelected(aIndex, &isSelected);
+ if (!isSelected)
+ selection->ToggleSelect(aIndex);
+
+ return true;
+ }
+ return false;
+}
+
+bool
+XULTreeAccessible::RemoveItemFromSelection(uint32_t aIndex)
+{
+ if (!mTreeView)
+ return false;
+
+ nsCOMPtr<nsITreeSelection> selection;
+ mTreeView->GetSelection(getter_AddRefs(selection));
+ if (selection) {
+ bool isSelected = false;
+ selection->IsSelected(aIndex, &isSelected);
+ if (isSelected)
+ selection->ToggleSelect(aIndex);
+
+ return true;
+ }
+ return false;
+}
+
+bool
+XULTreeAccessible::IsItemSelected(uint32_t aIndex)
+{
+ if (!mTreeView)
+ return false;
+
+ nsCOMPtr<nsITreeSelection> selection;
+ mTreeView->GetSelection(getter_AddRefs(selection));
+ if (selection) {
+ bool isSelected = false;
+ selection->IsSelected(aIndex, &isSelected);
+ return isSelected;
+ }
+ return false;
+}
+
+bool
+XULTreeAccessible::UnselectAll()
+{
+ if (!mTreeView)
+ return false;
+
+ nsCOMPtr<nsITreeSelection> selection;
+ mTreeView->GetSelection(getter_AddRefs(selection));
+ if (!selection)
+ return false;
+
+ selection->ClearSelection();
+ return true;
+}
+
+Accessible*
+XULTreeAccessible::GetSelectedItem(uint32_t aIndex)
+{
+ if (!mTreeView)
+ return nullptr;
+
+ nsCOMPtr<nsITreeSelection> selection;
+ mTreeView->GetSelection(getter_AddRefs(selection));
+ if (!selection)
+ return nullptr;
+
+ uint32_t selCount = 0;
+ int32_t rangeCount = 0;
+ selection->GetRangeCount(&rangeCount);
+ for (int32_t rangeIdx = 0; rangeIdx < rangeCount; rangeIdx++) {
+ int32_t firstIdx = 0, lastIdx = -1;
+ selection->GetRangeAt(rangeIdx, &firstIdx, &lastIdx);
+ for (int32_t rowIdx = firstIdx; rowIdx <= lastIdx; rowIdx++) {
+ if (selCount == aIndex)
+ return GetTreeItemAccessible(rowIdx);
+
+ selCount++;
+ }
+ }
+
+ return nullptr;
+}
+
+bool
+XULTreeAccessible::SelectAll()
+{
+ // see if we are multiple select if so set ourselves as such
+ if (!mTreeView)
+ return false;
+
+ nsCOMPtr<nsITreeSelection> selection;
+ mTreeView->GetSelection(getter_AddRefs(selection));
+ if (selection) {
+ bool single = false;
+ selection->GetSingle(&single);
+ if (!single) {
+ selection->SelectAll();
+ return true;
+ }
+ }
+
+ return false;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// XULTreeAccessible: Accessible implementation
+
+Accessible*
+XULTreeAccessible::GetChildAt(uint32_t aIndex) const
+{
+ uint32_t childCount = Accessible::ChildCount();
+ if (aIndex < childCount)
+ return Accessible::GetChildAt(aIndex);
+
+ return GetTreeItemAccessible(aIndex - childCount);
+}
+
+uint32_t
+XULTreeAccessible::ChildCount() const
+{
+ // Tree's children count is row count + treecols count.
+ uint32_t childCount = Accessible::ChildCount();
+ if (!mTreeView)
+ return childCount;
+
+ int32_t rowCount = 0;
+ mTreeView->GetRowCount(&rowCount);
+ childCount += rowCount;
+
+ return childCount;
+}
+
+Relation
+XULTreeAccessible::RelationByType(RelationType aType)
+{
+ if (aType == RelationType::NODE_PARENT_OF) {
+ if (mTreeView)
+ return Relation(new XULTreeItemIterator(this, mTreeView, -1));
+
+ return Relation();
+ }
+
+ return Accessible::RelationByType(aType);
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// XULTreeAccessible: Widgets
+
+bool
+XULTreeAccessible::IsWidget() const
+{
+ return true;
+}
+
+bool
+XULTreeAccessible::IsActiveWidget() const
+{
+ if (IsAutoCompletePopup()) {
+ nsCOMPtr<nsIAutoCompletePopup> autoCompletePopupElm =
+ do_QueryInterface(mContent->GetParent());
+
+ if (autoCompletePopupElm) {
+ bool isOpen = false;
+ autoCompletePopupElm->GetPopupOpen(&isOpen);
+ return isOpen;
+ }
+ }
+ return FocusMgr()->HasDOMFocus(mContent);
+}
+
+bool
+XULTreeAccessible::AreItemsOperable() const
+{
+ if (IsAutoCompletePopup()) {
+ nsCOMPtr<nsIAutoCompletePopup> autoCompletePopupElm =
+ do_QueryInterface(mContent->GetParent());
+
+ if (autoCompletePopupElm) {
+ bool isOpen = false;
+ autoCompletePopupElm->GetPopupOpen(&isOpen);
+ return isOpen;
+ }
+ }
+ return true;
+}
+
+Accessible*
+XULTreeAccessible::ContainerWidget() const
+{
+ if (IsAutoCompletePopup()) {
+ // This works for XUL autocompletes. It doesn't work for HTML forms
+ // autocomplete because of potential crossprocess calls (when autocomplete
+ // lives in content process while popup lives in chrome process). If that's
+ // a problem then rethink Widgets interface.
+ nsCOMPtr<nsIDOMXULMenuListElement> menuListElm =
+ do_QueryInterface(mContent->GetParent());
+ if (menuListElm) {
+ nsCOMPtr<nsIDOMNode> inputElm;
+ menuListElm->GetInputField(getter_AddRefs(inputElm));
+ if (inputElm) {
+ nsCOMPtr<nsINode> inputNode = do_QueryInterface(inputElm);
+ if (inputNode) {
+ Accessible* input =
+ mDoc->GetAccessible(inputNode);
+ return input ? input->ContainerWidget() : nullptr;
+ }
+ }
+ }
+ }
+ return nullptr;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// XULTreeAccessible: public implementation
+
+Accessible*
+XULTreeAccessible::GetTreeItemAccessible(int32_t aRow) const
+{
+ if (aRow < 0 || IsDefunct() || !mTreeView)
+ return nullptr;
+
+ int32_t rowCount = 0;
+ nsresult rv = mTreeView->GetRowCount(&rowCount);
+ if (NS_FAILED(rv) || aRow >= rowCount)
+ return nullptr;
+
+ void *key = reinterpret_cast<void*>(intptr_t(aRow));
+ Accessible* cachedTreeItem = mAccessibleCache.GetWeak(key);
+ if (cachedTreeItem)
+ return cachedTreeItem;
+
+ RefPtr<Accessible> treeItem = CreateTreeItemAccessible(aRow);
+ if (treeItem) {
+ mAccessibleCache.Put(key, treeItem);
+ Document()->BindToDocument(treeItem, nullptr);
+ return treeItem;
+ }
+
+ return nullptr;
+}
+
+void
+XULTreeAccessible::InvalidateCache(int32_t aRow, int32_t aCount)
+{
+ if (IsDefunct())
+ return;
+
+ if (!mTreeView) {
+ UnbindCacheEntriesFromDocument(mAccessibleCache);
+ return;
+ }
+
+ // Do not invalidate the cache if rows have been inserted.
+ if (aCount > 0)
+ return;
+
+ DocAccessible* document = Document();
+
+ // Fire destroy event for removed tree items and delete them from caches.
+ for (int32_t rowIdx = aRow; rowIdx < aRow - aCount; rowIdx++) {
+
+ void* key = reinterpret_cast<void*>(intptr_t(rowIdx));
+ Accessible* treeItem = mAccessibleCache.GetWeak(key);
+
+ if (treeItem) {
+ RefPtr<AccEvent> event =
+ new AccEvent(nsIAccessibleEvent::EVENT_HIDE, treeItem);
+ nsEventShell::FireEvent(event);
+
+ // Unbind from document, shutdown and remove from tree cache.
+ document->UnbindFromDocument(treeItem);
+ mAccessibleCache.Remove(key);
+ }
+ }
+
+ // We dealt with removed tree items already however we may keep tree items
+ // having row indexes greater than row count. We should remove these dead tree
+ // items silently from caches.
+ int32_t newRowCount = 0;
+ nsresult rv = mTreeView->GetRowCount(&newRowCount);
+ if (NS_FAILED(rv))
+ return;
+
+ int32_t oldRowCount = newRowCount - aCount;
+
+ for (int32_t rowIdx = newRowCount; rowIdx < oldRowCount; ++rowIdx) {
+
+ void *key = reinterpret_cast<void*>(intptr_t(rowIdx));
+ Accessible* treeItem = mAccessibleCache.GetWeak(key);
+
+ if (treeItem) {
+ // Unbind from document, shutdown and remove from tree cache.
+ document->UnbindFromDocument(treeItem);
+ mAccessibleCache.Remove(key);
+ }
+ }
+}
+
+void
+XULTreeAccessible::TreeViewInvalidated(int32_t aStartRow, int32_t aEndRow,
+ int32_t aStartCol, int32_t aEndCol)
+{
+ if (IsDefunct())
+ return;
+
+ if (!mTreeView) {
+ UnbindCacheEntriesFromDocument(mAccessibleCache);
+ return;
+ }
+
+ int32_t endRow = aEndRow;
+
+ nsresult rv;
+ if (endRow == -1) {
+ int32_t rowCount = 0;
+ rv = mTreeView->GetRowCount(&rowCount);
+ if (NS_FAILED(rv))
+ return;
+
+ endRow = rowCount - 1;
+ }
+
+ nsCOMPtr<nsITreeColumns> treeColumns;
+ mTree->GetColumns(getter_AddRefs(treeColumns));
+ if (!treeColumns)
+ return;
+
+ int32_t endCol = aEndCol;
+
+ if (endCol == -1) {
+ int32_t colCount = 0;
+ rv = treeColumns->GetCount(&colCount);
+ if (NS_FAILED(rv))
+ return;
+
+ endCol = colCount - 1;
+ }
+
+ for (int32_t rowIdx = aStartRow; rowIdx <= endRow; ++rowIdx) {
+
+ void *key = reinterpret_cast<void*>(intptr_t(rowIdx));
+ Accessible* accessible = mAccessibleCache.GetWeak(key);
+
+ if (accessible) {
+ RefPtr<XULTreeItemAccessibleBase> treeitemAcc = do_QueryObject(accessible);
+ NS_ASSERTION(treeitemAcc, "Wrong accessible at the given key!");
+
+ treeitemAcc->RowInvalidated(aStartCol, endCol);
+ }
+ }
+}
+
+void
+XULTreeAccessible::TreeViewChanged(nsITreeView* aView)
+{
+ if (IsDefunct())
+ return;
+
+ // Fire reorder event on tree accessible on accessible tree (do not fire
+ // show/hide events on tree items because it can be expensive to fire them for
+ // each tree item.
+ RefPtr<AccReorderEvent> reorderEvent = new AccReorderEvent(this);
+ Document()->FireDelayedEvent(reorderEvent);
+
+ // Clear cache.
+ UnbindCacheEntriesFromDocument(mAccessibleCache);
+
+ mTreeView = aView;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// XULTreeAccessible: protected implementation
+
+already_AddRefed<Accessible>
+XULTreeAccessible::CreateTreeItemAccessible(int32_t aRow) const
+{
+ RefPtr<Accessible> accessible =
+ new XULTreeItemAccessible(mContent, mDoc, const_cast<XULTreeAccessible*>(this),
+ mTree, mTreeView, aRow);
+
+ return accessible.forget();
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// XULTreeItemAccessibleBase
+////////////////////////////////////////////////////////////////////////////////
+
+XULTreeItemAccessibleBase::
+ XULTreeItemAccessibleBase(nsIContent* aContent, DocAccessible* aDoc,
+ Accessible* aParent, nsITreeBoxObject* aTree,
+ nsITreeView* aTreeView, int32_t aRow) :
+ AccessibleWrap(aContent, aDoc),
+ mTree(aTree), mTreeView(aTreeView), mRow(aRow)
+{
+ mParent = aParent;
+ mStateFlags |= eSharedNode;
+}
+
+XULTreeItemAccessibleBase::~XULTreeItemAccessibleBase()
+{
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// XULTreeItemAccessibleBase: nsISupports implementation
+
+NS_IMPL_CYCLE_COLLECTION_INHERITED(XULTreeItemAccessibleBase, Accessible,
+ mTree)
+
+NS_INTERFACE_TABLE_HEAD_CYCLE_COLLECTION_INHERITED(XULTreeItemAccessibleBase)
+ NS_INTERFACE_TABLE_INHERITED(XULTreeItemAccessibleBase,
+ XULTreeItemAccessibleBase)
+NS_INTERFACE_TABLE_TAIL_INHERITING(Accessible)
+NS_IMPL_ADDREF_INHERITED(XULTreeItemAccessibleBase, Accessible)
+NS_IMPL_RELEASE_INHERITED(XULTreeItemAccessibleBase, Accessible)
+
+////////////////////////////////////////////////////////////////////////////////
+// XULTreeItemAccessibleBase: Accessible
+
+Accessible*
+XULTreeItemAccessibleBase::FocusedChild()
+{
+ return FocusMgr()->FocusedAccessible() == this ? this : nullptr;
+}
+
+nsIntRect
+XULTreeItemAccessibleBase::Bounds() const
+{
+ // Get x coordinate and width from treechildren element, get y coordinate and
+ // height from tree cell.
+
+ nsCOMPtr<nsIBoxObject> boxObj = nsCoreUtils::GetTreeBodyBoxObject(mTree);
+ if (!boxObj)
+ return nsIntRect();
+
+ nsCOMPtr<nsITreeColumn> column = nsCoreUtils::GetFirstSensibleColumn(mTree);
+
+ int32_t x = 0, y = 0, width = 0, height = 0;
+ nsresult rv = mTree->GetCoordsForCellItem(mRow, column, EmptyString(),
+ &x, &y, &width, &height);
+ if (NS_FAILED(rv))
+ return nsIntRect();
+
+ boxObj->GetWidth(&width);
+
+ int32_t tcX = 0, tcY = 0;
+ boxObj->GetScreenX(&tcX);
+ boxObj->GetScreenY(&tcY);
+
+ x = tcX;
+ y += tcY;
+
+ nsPresContext* presContext = mDoc->PresContext();
+ return nsIntRect(presContext->CSSPixelsToDevPixels(x),
+ presContext->CSSPixelsToDevPixels(y),
+ presContext->CSSPixelsToDevPixels(width),
+ presContext->CSSPixelsToDevPixels(height));
+}
+
+void
+XULTreeItemAccessibleBase::SetSelected(bool aSelect)
+{
+ nsCOMPtr<nsITreeSelection> selection;
+ mTreeView->GetSelection(getter_AddRefs(selection));
+ if (selection) {
+ bool isSelected = false;
+ selection->IsSelected(mRow, &isSelected);
+ if (isSelected != aSelect)
+ selection->ToggleSelect(mRow);
+ }
+}
+
+void
+XULTreeItemAccessibleBase::TakeFocus()
+{
+ nsCOMPtr<nsITreeSelection> selection;
+ mTreeView->GetSelection(getter_AddRefs(selection));
+ if (selection)
+ selection->SetCurrentIndex(mRow);
+
+ // focus event will be fired here
+ Accessible::TakeFocus();
+}
+
+Relation
+XULTreeItemAccessibleBase::RelationByType(RelationType aType)
+{
+
+ switch (aType) {
+ case RelationType::NODE_CHILD_OF: {
+ int32_t parentIndex = -1;
+ if (!NS_SUCCEEDED(mTreeView->GetParentIndex(mRow, &parentIndex)))
+ return Relation();
+
+ if (parentIndex == -1)
+ return Relation(mParent);
+
+ XULTreeAccessible* treeAcc = mParent->AsXULTree();
+ return Relation(treeAcc->GetTreeItemAccessible(parentIndex));
+ }
+
+ case RelationType::NODE_PARENT_OF: {
+ bool isTrue = false;
+ if (NS_FAILED(mTreeView->IsContainerEmpty(mRow, &isTrue)) || isTrue)
+ return Relation();
+
+ if (NS_FAILED(mTreeView->IsContainerOpen(mRow, &isTrue)) || !isTrue)
+ return Relation();
+
+ XULTreeAccessible* tree = mParent->AsXULTree();
+ return Relation(new XULTreeItemIterator(tree, mTreeView, mRow));
+ }
+
+ default:
+ return Relation();
+ }
+}
+
+uint8_t
+XULTreeItemAccessibleBase::ActionCount()
+{
+ // "activate" action is available for all treeitems, "expand/collapse" action
+ // is avaible for treeitem which is container.
+ return IsExpandable() ? 2 : 1;
+}
+
+void
+XULTreeItemAccessibleBase::ActionNameAt(uint8_t aIndex, nsAString& aName)
+{
+ if (aIndex == eAction_Click) {
+ aName.AssignLiteral("activate");
+ return;
+ }
+
+ if (aIndex == eAction_Expand && IsExpandable()) {
+ bool isContainerOpen = false;
+ mTreeView->IsContainerOpen(mRow, &isContainerOpen);
+ if (isContainerOpen)
+ aName.AssignLiteral("collapse");
+ else
+ aName.AssignLiteral("expand");
+ }
+}
+
+bool
+XULTreeItemAccessibleBase::DoAction(uint8_t aIndex)
+{
+ if (aIndex != eAction_Click &&
+ (aIndex != eAction_Expand || !IsExpandable()))
+ return false;
+
+ DoCommand(nullptr, aIndex);
+ return true;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// XULTreeItemAccessibleBase: Accessible implementation
+
+void
+XULTreeItemAccessibleBase::Shutdown()
+{
+ mTree = nullptr;
+ mTreeView = nullptr;
+ mRow = -1;
+
+ AccessibleWrap::Shutdown();
+}
+
+GroupPos
+XULTreeItemAccessibleBase::GroupPosition()
+{
+ GroupPos groupPos;
+
+ int32_t level;
+ nsresult rv = mTreeView->GetLevel(mRow, &level);
+ NS_ENSURE_SUCCESS(rv, groupPos);
+
+ int32_t topCount = 1;
+ for (int32_t index = mRow - 1; index >= 0; index--) {
+ int32_t lvl = -1;
+ if (NS_SUCCEEDED(mTreeView->GetLevel(index, &lvl))) {
+ if (lvl < level)
+ break;
+
+ if (lvl == level)
+ topCount++;
+ }
+ }
+
+ int32_t rowCount = 0;
+ rv = mTreeView->GetRowCount(&rowCount);
+ NS_ENSURE_SUCCESS(rv, groupPos);
+
+ int32_t bottomCount = 0;
+ for (int32_t index = mRow + 1; index < rowCount; index++) {
+ int32_t lvl = -1;
+ if (NS_SUCCEEDED(mTreeView->GetLevel(index, &lvl))) {
+ if (lvl < level)
+ break;
+
+ if (lvl == level)
+ bottomCount++;
+ }
+ }
+
+ groupPos.level = level + 1;
+ groupPos.setSize = topCount + bottomCount;
+ groupPos.posInSet = topCount;
+
+ return groupPos;
+}
+
+uint64_t
+XULTreeItemAccessibleBase::NativeState()
+{
+
+ // focusable and selectable states
+ uint64_t state = NativeInteractiveState();
+
+ // expanded/collapsed state
+ if (IsExpandable()) {
+ bool isContainerOpen;
+ mTreeView->IsContainerOpen(mRow, &isContainerOpen);
+ state |= isContainerOpen ? states::EXPANDED : states::COLLAPSED;
+ }
+
+ // selected state
+ nsCOMPtr<nsITreeSelection> selection;
+ mTreeView->GetSelection(getter_AddRefs(selection));
+ if (selection) {
+ bool isSelected;
+ selection->IsSelected(mRow, &isSelected);
+ if (isSelected)
+ state |= states::SELECTED;
+ }
+
+ // focused state
+ if (FocusMgr()->IsFocused(this))
+ state |= states::FOCUSED;
+
+ // invisible state
+ int32_t firstVisibleRow, lastVisibleRow;
+ mTree->GetFirstVisibleRow(&firstVisibleRow);
+ mTree->GetLastVisibleRow(&lastVisibleRow);
+ if (mRow < firstVisibleRow || mRow > lastVisibleRow)
+ state |= states::INVISIBLE;
+
+ return state;
+}
+
+uint64_t
+XULTreeItemAccessibleBase::NativeInteractiveState() const
+{
+ return states::FOCUSABLE | states::SELECTABLE;
+}
+
+int32_t
+XULTreeItemAccessibleBase::IndexInParent() const
+{
+ return mParent ? mParent->ContentChildCount() + mRow : -1;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// XULTreeItemAccessibleBase: Widgets
+
+Accessible*
+XULTreeItemAccessibleBase::ContainerWidget() const
+{
+ return mParent;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// XULTreeItemAccessibleBase: Accessible protected methods
+
+void
+XULTreeItemAccessibleBase::DispatchClickEvent(nsIContent* aContent,
+ uint32_t aActionIndex)
+{
+ if (IsDefunct())
+ return;
+
+ nsCOMPtr<nsITreeColumns> columns;
+ mTree->GetColumns(getter_AddRefs(columns));
+ if (!columns)
+ return;
+
+ // Get column and pseudo element.
+ nsCOMPtr<nsITreeColumn> column;
+ nsAutoString pseudoElm;
+
+ if (aActionIndex == eAction_Click) {
+ // Key column is visible and clickable.
+ columns->GetKeyColumn(getter_AddRefs(column));
+ } else {
+ // Primary column contains a twisty we should click on.
+ columns->GetPrimaryColumn(getter_AddRefs(column));
+ pseudoElm = NS_LITERAL_STRING("twisty");
+ }
+
+ if (column)
+ nsCoreUtils::DispatchClickEvent(mTree, mRow, column, pseudoElm);
+}
+
+Accessible*
+XULTreeItemAccessibleBase::GetSiblingAtOffset(int32_t aOffset,
+ nsresult* aError) const
+{
+ if (aError)
+ *aError = NS_OK; // fail peacefully
+
+ return mParent->GetChildAt(IndexInParent() + aOffset);
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// XULTreeItemAccessibleBase: protected implementation
+
+bool
+XULTreeItemAccessibleBase::IsExpandable()
+{
+
+ bool isContainer = false;
+ mTreeView->IsContainer(mRow, &isContainer);
+ if (isContainer) {
+ bool isEmpty = false;
+ mTreeView->IsContainerEmpty(mRow, &isEmpty);
+ if (!isEmpty) {
+ nsCOMPtr<nsITreeColumns> columns;
+ mTree->GetColumns(getter_AddRefs(columns));
+ nsCOMPtr<nsITreeColumn> primaryColumn;
+ if (columns) {
+ columns->GetPrimaryColumn(getter_AddRefs(primaryColumn));
+ if (primaryColumn &&
+ !nsCoreUtils::IsColumnHidden(primaryColumn))
+ return true;
+ }
+ }
+ }
+
+ return false;
+}
+
+void
+XULTreeItemAccessibleBase::GetCellName(nsITreeColumn* aColumn, nsAString& aName)
+{
+
+ mTreeView->GetCellText(mRow, aColumn, aName);
+
+ // If there is still no name try the cell value:
+ // This is for graphical cells. We need tree/table view implementors to
+ // implement FooView::GetCellValue to return a meaningful string for cases
+ // where there is something shown in the cell (non-text) such as a star icon;
+ // in which case GetCellValue for that cell would return "starred" or
+ // "flagged" for example.
+ if (aName.IsEmpty())
+ mTreeView->GetCellValue(mRow, aColumn, aName);
+}
+
+
+////////////////////////////////////////////////////////////////////////////////
+// XULTreeItemAccessible
+////////////////////////////////////////////////////////////////////////////////
+
+XULTreeItemAccessible::
+ XULTreeItemAccessible(nsIContent* aContent, DocAccessible* aDoc,
+ Accessible* aParent, nsITreeBoxObject* aTree,
+ nsITreeView* aTreeView, int32_t aRow) :
+ XULTreeItemAccessibleBase(aContent, aDoc, aParent, aTree, aTreeView, aRow)
+{
+ mStateFlags |= eNoKidsFromDOM;
+ mColumn = nsCoreUtils::GetFirstSensibleColumn(mTree);
+ GetCellName(mColumn, mCachedName);
+}
+
+XULTreeItemAccessible::~XULTreeItemAccessible()
+{
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// XULTreeItemAccessible: nsISupports implementation
+
+NS_IMPL_CYCLE_COLLECTION_INHERITED(XULTreeItemAccessible,
+ XULTreeItemAccessibleBase,
+ mColumn)
+
+NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION_INHERITED(XULTreeItemAccessible)
+NS_INTERFACE_MAP_END_INHERITING(XULTreeItemAccessibleBase)
+NS_IMPL_ADDREF_INHERITED(XULTreeItemAccessible, XULTreeItemAccessibleBase)
+NS_IMPL_RELEASE_INHERITED(XULTreeItemAccessible, XULTreeItemAccessibleBase)
+
+////////////////////////////////////////////////////////////////////////////////
+// XULTreeItemAccessible: nsIAccessible implementation
+
+ENameValueFlag
+XULTreeItemAccessible::Name(nsString& aName)
+{
+ aName.Truncate();
+
+ GetCellName(mColumn, aName);
+ return eNameOK;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// XULTreeItemAccessible: Accessible implementation
+
+void
+XULTreeItemAccessible::Shutdown()
+{
+ mColumn = nullptr;
+ XULTreeItemAccessibleBase::Shutdown();
+}
+
+role
+XULTreeItemAccessible::NativeRole()
+{
+ nsCOMPtr<nsITreeColumns> columns;
+ mTree->GetColumns(getter_AddRefs(columns));
+ if (!columns) {
+ NS_ERROR("No tree columns object in the tree!");
+ return roles::NOTHING;
+ }
+
+ nsCOMPtr<nsITreeColumn> primaryColumn;
+ columns->GetPrimaryColumn(getter_AddRefs(primaryColumn));
+
+ return primaryColumn ? roles::OUTLINEITEM : roles::LISTITEM;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// XULTreeItemAccessible: XULTreeItemAccessibleBase implementation
+
+void
+XULTreeItemAccessible::RowInvalidated(int32_t aStartColIdx, int32_t aEndColIdx)
+{
+ nsAutoString name;
+ Name(name);
+
+ if (name != mCachedName) {
+ nsEventShell::FireEvent(nsIAccessibleEvent::EVENT_NAME_CHANGE, this);
+ mCachedName = name;
+ }
+}
+
+
+////////////////////////////////////////////////////////////////////////////////
+// XULTreeColumAccessible
+////////////////////////////////////////////////////////////////////////////////
+
+XULTreeColumAccessible::
+ XULTreeColumAccessible(nsIContent* aContent, DocAccessible* aDoc) :
+ XULColumAccessible(aContent, aDoc)
+{
+}
+
+Accessible*
+XULTreeColumAccessible::GetSiblingAtOffset(int32_t aOffset,
+ nsresult* aError) const
+{
+ if (aOffset < 0)
+ return XULColumAccessible::GetSiblingAtOffset(aOffset, aError);
+
+ if (aError)
+ *aError = NS_OK; // fail peacefully
+
+ nsCOMPtr<nsITreeBoxObject> tree = nsCoreUtils::GetTreeBoxObject(mContent);
+ if (tree) {
+ nsCOMPtr<nsITreeView> treeView;
+ tree->GetView(getter_AddRefs(treeView));
+ if (treeView) {
+ int32_t rowCount = 0;
+ treeView->GetRowCount(&rowCount);
+ if (rowCount > 0 && aOffset <= rowCount) {
+ XULTreeAccessible* treeAcc = Parent()->AsXULTree();
+
+ if (treeAcc)
+ return treeAcc->GetTreeItemAccessible(aOffset - 1);
+ }
+ }
+ }
+
+ return nullptr;
+}