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Mypal/layout/inspector/inDOMView.cpp

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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 "inDOMView.h"
#include "inIDOMUtils.h"
#include "inLayoutUtils.h"
#include "nsString.h"
#include "nsReadableUtils.h"
#include "nsIDOMNode.h"
#include "nsIDOMNodeFilter.h"
#include "nsIDOMNodeList.h"
#include "nsIDOMCharacterData.h"
#include "nsIDOMAttr.h"
#include "nsIDOMMozNamedAttrMap.h"
#include "nsIDOMMutationEvent.h"
#include "nsBindingManager.h"
#include "nsNameSpaceManager.h"
#include "nsIDocument.h"
#include "nsIServiceManager.h"
#include "nsITreeColumns.h"
#include "nsITreeBoxObject.h"
#include "mozilla/dom/Element.h"
#include "mozilla/Services.h"
#ifdef ACCESSIBILITY
#include "nsAccessibilityService.h"
#endif
using namespace mozilla;
////////////////////////////////////////////////////////////////////////
// inDOMViewNode
class inDOMViewNode
{
public:
inDOMViewNode() {}
explicit inDOMViewNode(nsIDOMNode* aNode);
~inDOMViewNode();
nsCOMPtr<nsIDOMNode> node;
inDOMViewNode* parent;
inDOMViewNode* next;
inDOMViewNode* previous;
int32_t level;
bool isOpen;
bool isContainer;
bool hasAnonymous;
bool hasSubDocument;
};
inDOMViewNode::inDOMViewNode(nsIDOMNode* aNode) :
node(aNode),
parent(nullptr),
next(nullptr),
previous(nullptr),
level(0),
isOpen(false),
isContainer(false),
hasAnonymous(false),
hasSubDocument(false)
{
}
inDOMViewNode::~inDOMViewNode()
{
}
////////////////////////////////////////////////////////////////////////
inDOMView::inDOMView() :
mShowAnonymous(false),
mShowSubDocuments(false),
mShowWhitespaceNodes(true),
mShowAccessibleNodes(false),
mWhatToShow(nsIDOMNodeFilter::SHOW_ALL)
{
}
inDOMView::~inDOMView()
{
SetRootNode(nullptr);
}
////////////////////////////////////////////////////////////////////////
// nsISupports
NS_IMPL_ISUPPORTS(inDOMView,
inIDOMView,
nsITreeView,
nsIMutationObserver)
////////////////////////////////////////////////////////////////////////
// inIDOMView
NS_IMETHODIMP
inDOMView::GetRootNode(nsIDOMNode** aNode)
{
*aNode = mRootNode;
NS_IF_ADDREF(*aNode);
return NS_OK;
}
NS_IMETHODIMP
inDOMView::SetRootNode(nsIDOMNode* aNode)
{
if (mTree)
mTree->BeginUpdateBatch();
if (mRootDocument) {
// remove previous document observer
nsCOMPtr<nsINode> doc(do_QueryInterface(mRootDocument));
if (doc)
doc->RemoveMutationObserver(this);
}
RemoveAllNodes();
mRootNode = aNode;
if (aNode) {
// If we are able to show element nodes, then start with the root node
// as the first node in the buffer
if (mWhatToShow & nsIDOMNodeFilter::SHOW_ELEMENT) {
// allocate new node array
AppendNode(CreateNode(aNode, nullptr));
} else {
// place only the children of the root node in the buffer
ExpandNode(-1);
}
// store an owning reference to document so that it isn't
// destroyed before we are
mRootDocument = do_QueryInterface(aNode);
if (!mRootDocument) {
aNode->GetOwnerDocument(getter_AddRefs(mRootDocument));
}
// add document observer
nsCOMPtr<nsINode> doc(do_QueryInterface(mRootDocument));
if (doc)
doc->AddMutationObserver(this);
} else {
mRootDocument = nullptr;
}
if (mTree)
mTree->EndUpdateBatch();
return NS_OK;
}
NS_IMETHODIMP
inDOMView::GetNodeFromRowIndex(int32_t rowIndex, nsIDOMNode **_retval)
{
inDOMViewNode* viewNode = nullptr;
RowToNode(rowIndex, &viewNode);
if (!viewNode) return NS_ERROR_FAILURE;
*_retval = viewNode->node;
NS_IF_ADDREF(*_retval);
return NS_OK;
}
NS_IMETHODIMP
inDOMView::GetRowIndexFromNode(nsIDOMNode *node, int32_t *_retval)
{
NodeToRow(node, _retval);
return NS_OK;
}
NS_IMETHODIMP
inDOMView::GetShowAnonymousContent(bool *aShowAnonymousContent)
{
*aShowAnonymousContent = mShowAnonymous;
return NS_OK;
}
NS_IMETHODIMP
inDOMView::SetShowAnonymousContent(bool aShowAnonymousContent)
{
mShowAnonymous = aShowAnonymousContent;
return NS_OK;
}
NS_IMETHODIMP
inDOMView::GetShowSubDocuments(bool *aShowSubDocuments)
{
*aShowSubDocuments = mShowSubDocuments;
return NS_OK;
}
NS_IMETHODIMP
inDOMView::SetShowSubDocuments(bool aShowSubDocuments)
{
mShowSubDocuments = aShowSubDocuments;
return NS_OK;
}
NS_IMETHODIMP
inDOMView::GetShowWhitespaceNodes(bool *aShowWhitespaceNodes)
{
*aShowWhitespaceNodes = mShowWhitespaceNodes;
return NS_OK;
}
NS_IMETHODIMP
inDOMView::SetShowWhitespaceNodes(bool aShowWhitespaceNodes)
{
mShowWhitespaceNodes = aShowWhitespaceNodes;
return NS_OK;
}
NS_IMETHODIMP
inDOMView::GetShowAccessibleNodes(bool *aShowAccessibleNodes)
{
*aShowAccessibleNodes = mShowAccessibleNodes;
return NS_OK;
}
NS_IMETHODIMP
inDOMView::SetShowAccessibleNodes(bool aShowAccessibleNodes)
{
mShowAccessibleNodes = aShowAccessibleNodes;
return NS_OK;
}
NS_IMETHODIMP
inDOMView::GetWhatToShow(uint32_t *aWhatToShow)
{
*aWhatToShow = mWhatToShow;
return NS_OK;
}
NS_IMETHODIMP
inDOMView::SetWhatToShow(uint32_t aWhatToShow)
{
mWhatToShow = aWhatToShow;
return NS_OK;
}
NS_IMETHODIMP
inDOMView::Rebuild()
{
nsCOMPtr<nsIDOMNode> root;
GetRootNode(getter_AddRefs(root));
SetRootNode(root);
return NS_OK;
}
////////////////////////////////////////////////////////////////////////
// nsITreeView
NS_IMETHODIMP
inDOMView::GetRowCount(int32_t *aRowCount)
{
*aRowCount = GetRowCount();
return NS_OK;
}
NS_IMETHODIMP
inDOMView::GetRowProperties(int32_t index, nsAString& aProps)
{
return NS_OK;
}
NS_IMETHODIMP
inDOMView::GetCellProperties(int32_t row, nsITreeColumn* col,
nsAString& aProps)
{
inDOMViewNode* node = nullptr;
RowToNode(row, &node);
if (!node) return NS_ERROR_FAILURE;
nsCOMPtr<nsIContent> content = do_QueryInterface(node->node);
if (content && content->IsInAnonymousSubtree()) {
aProps.AppendLiteral("anonymous ");
}
uint16_t nodeType;
node->node->GetNodeType(&nodeType);
switch (nodeType) {
case nsIDOMNode::ELEMENT_NODE:
aProps.AppendLiteral("ELEMENT_NODE");
break;
case nsIDOMNode::ATTRIBUTE_NODE:
aProps.AppendLiteral("ATTRIBUTE_NODE");
break;
case nsIDOMNode::TEXT_NODE:
aProps.AppendLiteral("TEXT_NODE");
break;
case nsIDOMNode::CDATA_SECTION_NODE:
aProps.AppendLiteral("CDATA_SECTION_NODE");
break;
case nsIDOMNode::ENTITY_REFERENCE_NODE:
aProps.AppendLiteral("ENTITY_REFERENCE_NODE");
break;
case nsIDOMNode::ENTITY_NODE:
aProps.AppendLiteral("ENTITY_NODE");
break;
case nsIDOMNode::PROCESSING_INSTRUCTION_NODE:
aProps.AppendLiteral("PROCESSING_INSTRUCTION_NODE");
break;
case nsIDOMNode::COMMENT_NODE:
aProps.AppendLiteral("COMMENT_NODE");
break;
case nsIDOMNode::DOCUMENT_NODE:
aProps.AppendLiteral("DOCUMENT_NODE");
break;
case nsIDOMNode::DOCUMENT_TYPE_NODE:
aProps.AppendLiteral("DOCUMENT_TYPE_NODE");
break;
case nsIDOMNode::DOCUMENT_FRAGMENT_NODE:
aProps.AppendLiteral("DOCUMENT_FRAGMENT_NODE");
break;
case nsIDOMNode::NOTATION_NODE:
aProps.AppendLiteral("NOTATION_NODE");
break;
}
#ifdef ACCESSIBILITY
if (mShowAccessibleNodes) {
nsAccessibilityService* accService = GetOrCreateAccService();
NS_ENSURE_TRUE(accService, NS_ERROR_FAILURE);
if (accService->HasAccessible(node->node))
aProps.AppendLiteral(" ACCESSIBLE_NODE");
}
#endif
return NS_OK;
}
NS_IMETHODIMP
inDOMView::GetColumnProperties(nsITreeColumn* col, nsAString& aProps)
{
return NS_OK;
}
NS_IMETHODIMP
inDOMView::GetImageSrc(int32_t row, nsITreeColumn* col, nsAString& _retval)
{
return NS_OK;
}
NS_IMETHODIMP
inDOMView::GetProgressMode(int32_t row, nsITreeColumn* col, int32_t* _retval)
{
return NS_OK;
}
NS_IMETHODIMP
inDOMView::GetCellValue(int32_t row, nsITreeColumn* col, nsAString& _retval)
{
return NS_OK;
}
NS_IMETHODIMP
inDOMView::GetCellText(int32_t row, nsITreeColumn* col, nsAString& _retval)
{
inDOMViewNode* node = nullptr;
RowToNode(row, &node);
if (!node) return NS_ERROR_FAILURE;
nsIDOMNode* domNode = node->node;
nsAutoString colID;
col->GetId(colID);
if (colID.EqualsLiteral("colNodeName"))
domNode->GetNodeName(_retval);
else if (colID.EqualsLiteral("colLocalName"))
domNode->GetLocalName(_retval);
else if (colID.EqualsLiteral("colPrefix"))
domNode->GetPrefix(_retval);
else if (colID.EqualsLiteral("colNamespaceURI"))
domNode->GetNamespaceURI(_retval);
else if (colID.EqualsLiteral("colNodeType")) {
uint16_t nodeType;
domNode->GetNodeType(&nodeType);
nsAutoString temp;
temp.AppendInt(int32_t(nodeType));
_retval = temp;
} else if (colID.EqualsLiteral("colNodeValue"))
domNode->GetNodeValue(_retval);
else {
if (StringBeginsWith(colID, NS_LITERAL_STRING("col@"))) {
nsCOMPtr<nsIDOMElement> el = do_QueryInterface(node->node);
if (el) {
nsAutoString attr;
colID.Right(attr, colID.Length()-4); // have to use this because Substring is crashing on me!
el->GetAttribute(attr, _retval);
}
}
}
return NS_OK;
}
NS_IMETHODIMP
inDOMView::IsContainer(int32_t index, bool *_retval)
{
inDOMViewNode* node = nullptr;
RowToNode(index, &node);
if (!node) return NS_ERROR_FAILURE;
*_retval = node->isContainer;
return NS_OK;
}
NS_IMETHODIMP
inDOMView::IsContainerOpen(int32_t index, bool *_retval)
{
inDOMViewNode* node = nullptr;
RowToNode(index, &node);
if (!node) return NS_ERROR_FAILURE;
*_retval = node->isOpen;
return NS_OK;
}
NS_IMETHODIMP
inDOMView::IsContainerEmpty(int32_t index, bool *_retval)
{
inDOMViewNode* node = nullptr;
RowToNode(index, &node);
if (!node) return NS_ERROR_FAILURE;
*_retval = node->isContainer ? false : true;
return NS_OK;
}
NS_IMETHODIMP
inDOMView::GetLevel(int32_t index, int32_t *_retval)
{
inDOMViewNode* node = nullptr;
RowToNode(index, &node);
if (!node) return NS_ERROR_FAILURE;
*_retval = node->level;
return NS_OK;
}
NS_IMETHODIMP
inDOMView::GetParentIndex(int32_t rowIndex, int32_t *_retval)
{
inDOMViewNode* node = nullptr;
RowToNode(rowIndex, &node);
if (!node) return NS_ERROR_FAILURE;
// GetParentIndex returns -1 if there is no parent
*_retval = -1;
inDOMViewNode* checkNode = nullptr;
int32_t i = rowIndex - 1;
do {
nsresult rv = RowToNode(i, &checkNode);
if (NS_FAILED(rv)) {
// No parent. Just break out.
break;
}
if (checkNode == node->parent) {
*_retval = i;
return NS_OK;
}
--i;
} while (checkNode);
return NS_OK;
}
NS_IMETHODIMP
inDOMView::HasNextSibling(int32_t rowIndex, int32_t afterIndex, bool *_retval)
{
inDOMViewNode* node = nullptr;
RowToNode(rowIndex, &node);
if (!node) return NS_ERROR_FAILURE;
*_retval = node->next != nullptr;
return NS_OK;
}
NS_IMETHODIMP
inDOMView::ToggleOpenState(int32_t index)
{
inDOMViewNode* node = nullptr;
RowToNode(index, &node);
if (!node) return NS_ERROR_FAILURE;
int32_t oldCount = GetRowCount();
if (node->isOpen)
CollapseNode(index);
else
ExpandNode(index);
// Update the twisty.
mTree->InvalidateRow(index);
mTree->RowCountChanged(index+1, GetRowCount() - oldCount);
return NS_OK;
}
NS_IMETHODIMP
inDOMView::SetTree(nsITreeBoxObject *tree)
{
mTree = tree;
return NS_OK;
}
NS_IMETHODIMP
inDOMView::GetSelection(nsITreeSelection * *aSelection)
{
*aSelection = mSelection;
NS_IF_ADDREF(*aSelection);
return NS_OK;
}
NS_IMETHODIMP inDOMView::SetSelection(nsITreeSelection * aSelection)
{
mSelection = aSelection;
return NS_OK;
}
NS_IMETHODIMP
inDOMView::SelectionChanged()
{
return NS_OK;
}
NS_IMETHODIMP
inDOMView::SetCellValue(int32_t row, nsITreeColumn* col, const nsAString& value)
{
return NS_OK;
}
NS_IMETHODIMP
inDOMView::SetCellText(int32_t row, nsITreeColumn* col, const nsAString& value)
{
return NS_OK;
}
NS_IMETHODIMP
inDOMView::CycleHeader(nsITreeColumn* col)
{
return NS_OK;
}
NS_IMETHODIMP
inDOMView::CycleCell(int32_t row, nsITreeColumn* col)
{
return NS_OK;
}
NS_IMETHODIMP
inDOMView::IsEditable(int32_t row, nsITreeColumn* col, bool *_retval)
{
return NS_OK;
}
NS_IMETHODIMP
inDOMView::IsSelectable(int32_t row, nsITreeColumn* col, bool *_retval)
{
return NS_OK;
}
NS_IMETHODIMP
inDOMView::IsSeparator(int32_t index, bool *_retval)
{
return NS_OK;
}
NS_IMETHODIMP
inDOMView::IsSorted(bool *_retval)
{
return NS_OK;
}
NS_IMETHODIMP
inDOMView::CanDrop(int32_t index, int32_t orientation,
nsIDOMDataTransfer* aDataTransfer, bool *_retval)
{
*_retval = false;
return NS_OK;
}
NS_IMETHODIMP
inDOMView::Drop(int32_t row, int32_t orientation, nsIDOMDataTransfer* aDataTransfer)
{
return NS_OK;
}
NS_IMETHODIMP
inDOMView::PerformAction(const char16_t *action)
{
return NS_OK;
}
NS_IMETHODIMP
inDOMView::PerformActionOnRow(const char16_t *action, int32_t row)
{
return NS_OK;
}
NS_IMETHODIMP
inDOMView::PerformActionOnCell(const char16_t* action, int32_t row, nsITreeColumn* col)
{
return NS_OK;
}
///////////////////////////////////////////////////////////////////////
// nsIMutationObserver
void
inDOMView::NodeWillBeDestroyed(const nsINode* aNode)
{
NS_NOTREACHED("Document destroyed while we're holding a strong ref to it");
}
void
inDOMView::AttributeChanged(nsIDocument* aDocument, dom::Element* aElement,
int32_t aNameSpaceID, nsIAtom* aAttribute,
int32_t aModType,
const nsAttrValue* aOldValue)
{
if (!mTree) {
return;
}
if (!(mWhatToShow & nsIDOMNodeFilter::SHOW_ATTRIBUTE)) {
return;
}
nsCOMPtr<nsIMutationObserver> kungFuDeathGrip(this);
// get the dom attribute node, if there is any
nsCOMPtr<nsIDOMElement> el(do_QueryInterface(aElement));
nsCOMPtr<nsIDOMAttr> domAttr;
nsDependentAtomString attrStr(aAttribute);
if (aNameSpaceID) {
nsNameSpaceManager* nsm = nsNameSpaceManager::GetInstance();
if (!nsm) {
// we can't find out which attribute we want :(
return;
}
nsString attrNS;
nsresult rv = nsm->GetNameSpaceURI(aNameSpaceID, attrNS);
if (NS_FAILED(rv)) {
return;
}
(void)el->GetAttributeNodeNS(attrNS, attrStr, getter_AddRefs(domAttr));
} else {
(void)el->GetAttributeNode(attrStr, getter_AddRefs(domAttr));
}
if (aModType == nsIDOMMutationEvent::MODIFICATION) {
// No fancy stuff here, just invalidate the changed row
if (!domAttr) {
return;
}
int32_t row = 0;
NodeToRow(domAttr, &row);
mTree->InvalidateRange(row, row);
} else if (aModType == nsIDOMMutationEvent::ADDITION) {
if (!domAttr) {
return;
}
// get the number of attributes on this content node
nsCOMPtr<nsIDOMMozNamedAttrMap> attrs;
el->GetAttributes(getter_AddRefs(attrs));
uint32_t attrCount;
attrs->GetLength(&attrCount);
inDOMViewNode* contentNode = nullptr;
int32_t contentRow;
int32_t attrRow;
if (mRootNode == el &&
!(mWhatToShow & nsIDOMNodeFilter::SHOW_ELEMENT)) {
// if this view has a root node but is not displaying it,
// it is ok to act as if the changed attribute is on the root.
attrRow = attrCount - 1;
} else {
if (NS_FAILED(NodeToRow(el, &contentRow))) {
return;
}
RowToNode(contentRow, &contentNode);
if (!contentNode->isOpen) {
return;
}
attrRow = contentRow + attrCount;
}
inDOMViewNode* newNode = CreateNode(domAttr, contentNode);
inDOMViewNode* insertNode = nullptr;
RowToNode(attrRow, &insertNode);
if (insertNode) {
if (contentNode &&
insertNode->level <= contentNode->level) {
RowToNode(attrRow-1, &insertNode);
InsertLinkAfter(newNode, insertNode);
} else
InsertLinkBefore(newNode, insertNode);
}
InsertNode(newNode, attrRow);
mTree->RowCountChanged(attrRow, 1);
} else if (aModType == nsIDOMMutationEvent::REMOVAL) {
// At this point, the attribute is already gone from the DOM, but is still represented
// in our mRows array. Search through the content node's children for the corresponding
// node and remove it.
// get the row of the content node
inDOMViewNode* contentNode = nullptr;
int32_t contentRow;
int32_t baseLevel;
if (NS_SUCCEEDED(NodeToRow(el, &contentRow))) {
RowToNode(contentRow, &contentNode);
baseLevel = contentNode->level;
} else {
if (mRootNode == el) {
contentRow = -1;
baseLevel = -1;
} else
return;
}
// search for the attribute node that was removed
inDOMViewNode* checkNode = nullptr;
int32_t row = 0;
for (row = contentRow+1; row < GetRowCount(); ++row) {
checkNode = GetNodeAt(row);
if (checkNode->level == baseLevel+1) {
domAttr = do_QueryInterface(checkNode->node);
if (domAttr) {
nsAutoString attrName;
domAttr->GetNodeName(attrName);
if (attrName.Equals(attrStr)) {
// we have found the row for the attribute that was removed
RemoveLink(checkNode);
RemoveNode(row);
mTree->RowCountChanged(row, -1);
break;
}
}
}
if (checkNode->level <= baseLevel)
break;
}
}
}
void
inDOMView::ContentAppended(nsIDocument *aDocument,
nsIContent* aContainer,
nsIContent* aFirstNewContent,
int32_t /* unused */)
{
if (!mTree) {
return;
}
for (nsIContent* cur = aFirstNewContent; cur; cur = cur->GetNextSibling()) {
// Our ContentInserted impl doesn't use the index
ContentInserted(aDocument, aContainer, cur, 0);
}
}
void
inDOMView::ContentInserted(nsIDocument *aDocument, nsIContent* aContainer,
nsIContent* aChild, int32_t /* unused */)
{
if (!mTree)
return;
nsresult rv;
nsCOMPtr<nsIDOMNode> childDOMNode(do_QueryInterface(aChild));
nsCOMPtr<nsIDOMNode> parent;
if (!mDOMUtils) {
mDOMUtils = services::GetInDOMUtils();
if (!mDOMUtils) {
return;
}
}
mDOMUtils->GetParentForNode(childDOMNode, mShowAnonymous,
getter_AddRefs(parent));
// find the inDOMViewNode for the parent of the inserted content
int32_t parentRow = 0;
if (NS_FAILED(rv = NodeToRow(parent, &parentRow)))
return;
inDOMViewNode* parentNode = nullptr;
if (NS_FAILED(rv = RowToNode(parentRow, &parentNode)))
return;
nsCOMPtr<nsIMutationObserver> kungFuDeathGrip(this);
if (!parentNode->isOpen) {
// Parent is not open, so don't bother creating tree rows for the
// kids. But do indicate that it's now a container, if needed.
if (!parentNode->isContainer) {
parentNode->isContainer = true;
mTree->InvalidateRow(parentRow);
}
return;
}
// get the previous sibling of the inserted content
nsCOMPtr<nsIDOMNode> previous;
GetRealPreviousSibling(childDOMNode, parent, getter_AddRefs(previous));
inDOMViewNode* previousNode = nullptr;
int32_t row = 0;
if (previous) {
// find the inDOMViewNode for the previous sibling of the inserted content
int32_t previousRow = 0;
if (NS_FAILED(rv = NodeToRow(previous, &previousRow)))
return;
if (NS_FAILED(rv = RowToNode(previousRow, &previousNode)))
return;
// get the last descendant of the previous row, which is the row
// after which to insert this new row
GetLastDescendantOf(previousNode, previousRow, &row);
++row;
} else {
// there is no previous sibling, so the new row will be inserted after the parent
row = parentRow+1;
}
inDOMViewNode* newNode = CreateNode(childDOMNode, parentNode);
if (previous) {
InsertLinkAfter(newNode, previousNode);
} else {
int32_t firstChildRow;
if (NS_SUCCEEDED(GetFirstDescendantOf(parentNode, parentRow, &firstChildRow))) {
inDOMViewNode* firstChild;
RowToNode(firstChildRow, &firstChild);
InsertLinkBefore(newNode, firstChild);
}
}
// insert new node
InsertNode(newNode, row);
mTree->RowCountChanged(row, 1);
}
void
inDOMView::ContentRemoved(nsIDocument *aDocument, nsIContent* aContainer,
nsIContent* aChild, int32_t aIndexInContainer,
nsIContent* aPreviousSibling)
{
if (!mTree)
return;
nsresult rv;
// find the inDOMViewNode for the old child
nsCOMPtr<nsIDOMNode> oldDOMNode(do_QueryInterface(aChild));
int32_t row = 0;
if (NS_FAILED(rv = NodeToRow(oldDOMNode, &row)))
return;
inDOMViewNode* oldNode;
if (NS_FAILED(rv = RowToNode(row, &oldNode)))
return;
nsCOMPtr<nsIMutationObserver> kungFuDeathGrip(this);
// The parent may no longer be a container. Note that we don't want
// to access oldNode after calling RemoveNode, so do this now.
inDOMViewNode* parentNode = oldNode->parent;
bool isOnlyChild = oldNode->previous == nullptr && oldNode->next == nullptr;
// Keep track of how many rows we are removing. It's at least one,
// but if we're open it's more.
int32_t oldCount = GetRowCount();
if (oldNode->isOpen)
CollapseNode(row);
RemoveLink(oldNode);
RemoveNode(row);
if (isOnlyChild) {
// Fix up the parent
parentNode->isContainer = false;
parentNode->isOpen = false;
mTree->InvalidateRow(NodeToRow(parentNode));
}
mTree->RowCountChanged(row, GetRowCount() - oldCount);
}
///////////////////////////////////////////////////////////////////////
// inDOMView
//////// NODE MANAGEMENT
inDOMViewNode*
inDOMView::GetNodeAt(int32_t aRow)
{
return mNodes.ElementAt(aRow);
}
int32_t
inDOMView::GetRowCount()
{
return mNodes.Length();
}
int32_t
inDOMView::NodeToRow(inDOMViewNode* aNode)
{
return mNodes.IndexOf(aNode);
}
inDOMViewNode*
inDOMView::CreateNode(nsIDOMNode* aNode, inDOMViewNode* aParent)
{
inDOMViewNode* viewNode = new inDOMViewNode(aNode);
viewNode->level = aParent ? aParent->level+1 : 0;
viewNode->parent = aParent;
nsCOMArray<nsIDOMNode> grandKids;
GetChildNodesFor(aNode, grandKids);
viewNode->isContainer = (grandKids.Count() > 0);
return viewNode;
}
bool
inDOMView::RowOutOfBounds(int32_t aRow, int32_t aCount)
{
return aRow < 0 || aRow >= GetRowCount() || aCount+aRow > GetRowCount();
}
void
inDOMView::AppendNode(inDOMViewNode* aNode)
{
mNodes.AppendElement(aNode);
}
void
inDOMView::InsertNode(inDOMViewNode* aNode, int32_t aRow)
{
if (RowOutOfBounds(aRow, 1))
AppendNode(aNode);
else
mNodes.InsertElementAt(aRow, aNode);
}
void
inDOMView::RemoveNode(int32_t aRow)
{
if (RowOutOfBounds(aRow, 1))
return;
delete GetNodeAt(aRow);
mNodes.RemoveElementAt(aRow);
}
void
inDOMView::ReplaceNode(inDOMViewNode* aNode, int32_t aRow)
{
if (RowOutOfBounds(aRow, 1))
return;
delete GetNodeAt(aRow);
mNodes.ElementAt(aRow) = aNode;
}
void
inDOMView::InsertNodes(nsTArray<inDOMViewNode*>& aNodes, int32_t aRow)
{
if (aRow < 0 || aRow > GetRowCount())
return;
mNodes.InsertElementsAt(aRow, aNodes);
}
void
inDOMView::RemoveNodes(int32_t aRow, int32_t aCount)
{
if (aRow < 0)
return;
int32_t rowCount = GetRowCount();
for (int32_t i = aRow; i < aRow+aCount && i < rowCount; ++i) {
delete GetNodeAt(i);
}
mNodes.RemoveElementsAt(aRow, aCount);
}
void
inDOMView::RemoveAllNodes()
{
int32_t rowCount = GetRowCount();
for (int32_t i = 0; i < rowCount; ++i) {
delete GetNodeAt(i);
}
mNodes.Clear();
}
void
inDOMView::ExpandNode(int32_t aRow)
{
inDOMViewNode* node = nullptr;
RowToNode(aRow, &node);
nsCOMArray<nsIDOMNode> kids;
GetChildNodesFor(node ? node->node : mRootNode,
kids);
int32_t kidCount = kids.Count();
nsTArray<inDOMViewNode*> list(kidCount);
inDOMViewNode* newNode = nullptr;
inDOMViewNode* prevNode = nullptr;
for (int32_t i = 0; i < kidCount; ++i) {
newNode = CreateNode(kids[i], node);
list.AppendElement(newNode);
if (prevNode)
prevNode->next = newNode;
newNode->previous = prevNode;
prevNode = newNode;
}
InsertNodes(list, aRow+1);
if (node)
node->isOpen = true;
}
void
inDOMView::CollapseNode(int32_t aRow)
{
inDOMViewNode* node = nullptr;
nsresult rv = RowToNode(aRow, &node);
if (NS_FAILED(rv)) {
return;
}
int32_t row = 0;
GetLastDescendantOf(node, aRow, &row);
RemoveNodes(aRow+1, row-aRow);
node->isOpen = false;
}
//////// NODE AND ROW CONVERSION
nsresult
inDOMView::RowToNode(int32_t aRow, inDOMViewNode** aNode)
{
if (aRow < 0 || aRow >= GetRowCount())
return NS_ERROR_FAILURE;
*aNode = GetNodeAt(aRow);
return NS_OK;
}
nsresult
inDOMView::NodeToRow(nsIDOMNode* aNode, int32_t* aRow)
{
int32_t rowCount = GetRowCount();
for (int32_t i = 0; i < rowCount; ++i) {
if (GetNodeAt(i)->node == aNode) {
*aRow = i;
return NS_OK;
}
}
*aRow = -1;
return NS_ERROR_FAILURE;
}
//////// NODE HIERARCHY MUTATION
void
inDOMView::InsertLinkAfter(inDOMViewNode* aNode, inDOMViewNode* aInsertAfter)
{
if (aInsertAfter->next)
aInsertAfter->next->previous = aNode;
aNode->next = aInsertAfter->next;
aInsertAfter->next = aNode;
aNode->previous = aInsertAfter;
}
void
inDOMView::InsertLinkBefore(inDOMViewNode* aNode, inDOMViewNode* aInsertBefore)
{
if (aInsertBefore->previous)
aInsertBefore->previous->next = aNode;
aNode->previous = aInsertBefore->previous;
aInsertBefore->previous = aNode;
aNode->next = aInsertBefore;
}
void
inDOMView::RemoveLink(inDOMViewNode* aNode)
{
if (aNode->previous)
aNode->previous->next = aNode->next;
if (aNode->next)
aNode->next->previous = aNode->previous;
}
void
inDOMView::ReplaceLink(inDOMViewNode* aNewNode, inDOMViewNode* aOldNode)
{
if (aOldNode->previous)
aOldNode->previous->next = aNewNode;
if (aOldNode->next)
aOldNode->next->previous = aNewNode;
aNewNode->next = aOldNode->next;
aNewNode->previous = aOldNode->previous;
}
//////// NODE HIERARCHY UTILITIES
nsresult
inDOMView::GetFirstDescendantOf(inDOMViewNode* aNode, int32_t aRow, int32_t* aResult)
{
// get the first node that is a descendant of the previous sibling
int32_t row = 0;
inDOMViewNode* node;
for (row = aRow+1; row < GetRowCount(); ++row) {
node = GetNodeAt(row);
if (node->parent == aNode) {
*aResult = row;
return NS_OK;
}
if (node->level <= aNode->level)
break;
}
return NS_ERROR_FAILURE;
}
nsresult
inDOMView::GetLastDescendantOf(inDOMViewNode* aNode, int32_t aRow, int32_t* aResult)
{
// get the last node that is a descendant of the previous sibling
int32_t row = 0;
for (row = aRow+1; row < GetRowCount(); ++row) {
if (GetNodeAt(row)->level <= aNode->level)
break;
}
*aResult = row-1;
return NS_OK;
}
//////// DOM UTILITIES
nsresult
inDOMView::GetChildNodesFor(nsIDOMNode* aNode, nsCOMArray<nsIDOMNode>& aResult)
{
NS_ENSURE_ARG(aNode);
// attribute nodes
if (mWhatToShow & nsIDOMNodeFilter::SHOW_ATTRIBUTE) {
nsCOMPtr<nsIDOMElement> element = do_QueryInterface(aNode);
if (element) {
nsCOMPtr<nsIDOMMozNamedAttrMap> attrs;
element->GetAttributes(getter_AddRefs(attrs));
if (attrs) {
AppendAttrsToArray(attrs, aResult);
}
}
}
if (mWhatToShow & nsIDOMNodeFilter::SHOW_ELEMENT) {
nsCOMPtr<nsIDOMNodeList> kids;
if (!mDOMUtils) {
mDOMUtils = services::GetInDOMUtils();
if (!mDOMUtils) {
return NS_ERROR_FAILURE;
}
}
mDOMUtils->GetChildrenForNode(aNode, mShowAnonymous,
getter_AddRefs(kids));
if (kids) {
AppendKidsToArray(kids, aResult);
}
}
if (mShowSubDocuments) {
nsCOMPtr<nsIDOMNode> domdoc =
do_QueryInterface(inLayoutUtils::GetSubDocumentFor(aNode));
if (domdoc) {
aResult.AppendObject(domdoc);
}
}
return NS_OK;
}
nsresult
inDOMView::GetRealPreviousSibling(nsIDOMNode* aNode, nsIDOMNode* aRealParent, nsIDOMNode** aSibling)
{
// XXXjrh: This won't work for some cases during some situations where XBL insertion points
// are involved. Fix me!
aNode->GetPreviousSibling(aSibling);
return NS_OK;
}
nsresult
inDOMView::AppendKidsToArray(nsIDOMNodeList* aKids,
nsCOMArray<nsIDOMNode>& aArray)
{
uint32_t l = 0;
aKids->GetLength(&l);
nsCOMPtr<nsIDOMNode> kid;
uint16_t nodeType = 0;
// Try and get DOM Utils in case we don't have one yet.
if (!mShowWhitespaceNodes && !mDOMUtils) {
mDOMUtils = services::GetInDOMUtils();
}
for (uint32_t i = 0; i < l; ++i) {
aKids->Item(i, getter_AddRefs(kid));
kid->GetNodeType(&nodeType);
NS_ASSERTION(nodeType && nodeType <= nsIDOMNode::NOTATION_NODE,
"Unknown node type. "
"Were new types added to the spec?");
// As of DOM Level 2 Core and Traversal, each NodeFilter constant
// is defined as the lower nth bit in the NodeFilter bitmask,
// where n is the numeric constant of the nodeType it represents.
// If this invariant ever changes, we will need to update the
// following line.
uint32_t filterForNodeType = 1 << (nodeType - 1);
if (mWhatToShow & filterForNodeType) {
if ((nodeType == nsIDOMNode::TEXT_NODE ||
nodeType == nsIDOMNode::COMMENT_NODE) &&
!mShowWhitespaceNodes && mDOMUtils) {
nsCOMPtr<nsIDOMCharacterData> data = do_QueryInterface(kid);
NS_ASSERTION(data, "Does not implement nsIDOMCharacterData!");
bool ignore;
mDOMUtils->IsIgnorableWhitespace(data, &ignore);
if (ignore) {
continue;
}
}
aArray.AppendElement(kid.forget());
}
}
return NS_OK;
}
nsresult
inDOMView::AppendAttrsToArray(nsIDOMMozNamedAttrMap* aAttributes,
nsCOMArray<nsIDOMNode>& aArray)
{
uint32_t l = 0;
aAttributes->GetLength(&l);
nsCOMPtr<nsIDOMAttr> attribute;
for (uint32_t i = 0; i < l; ++i) {
aAttributes->Item(i, getter_AddRefs(attribute));
aArray.AppendElement(attribute.forget());
}
return NS_OK;
}
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