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-rw-r--r--layout/xul/tree/nsTreeContentView.cpp1372
1 files changed, 1372 insertions, 0 deletions
diff --git a/layout/xul/tree/nsTreeContentView.cpp b/layout/xul/tree/nsTreeContentView.cpp
new file mode 100644
index 000000000..66cc0072f
--- /dev/null
+++ b/layout/xul/tree/nsTreeContentView.cpp
@@ -0,0 +1,1372 @@
+/* -*- 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 "nsNameSpaceManager.h"
+#include "nsGkAtoms.h"
+#include "nsIBoxObject.h"
+#include "nsTreeUtils.h"
+#include "nsTreeContentView.h"
+#include "ChildIterator.h"
+#include "nsDOMClassInfoID.h"
+#include "nsError.h"
+#include "nsIXULSortService.h"
+#include "nsContentUtils.h"
+#include "nsTreeBodyFrame.h"
+#include "mozilla/dom/Element.h"
+#include "nsServiceManagerUtils.h"
+#include "nsIDocument.h"
+
+using namespace mozilla;
+
+#define NS_ENSURE_NATIVE_COLUMN(_col) \
+ RefPtr<nsTreeColumn> col = nsTreeBodyFrame::GetColumnImpl(_col); \
+ if (!col) { \
+ return NS_ERROR_INVALID_ARG; \
+ }
+
+// A content model view implementation for the tree.
+
+#define ROW_FLAG_CONTAINER 0x01
+#define ROW_FLAG_OPEN 0x02
+#define ROW_FLAG_EMPTY 0x04
+#define ROW_FLAG_SEPARATOR 0x08
+
+class Row
+{
+ public:
+ Row(nsIContent* aContent, int32_t aParentIndex)
+ : mContent(aContent), mParentIndex(aParentIndex),
+ mSubtreeSize(0), mFlags(0) {
+ }
+
+ ~Row() {
+ }
+
+ void SetContainer(bool aContainer) {
+ aContainer ? mFlags |= ROW_FLAG_CONTAINER : mFlags &= ~ROW_FLAG_CONTAINER;
+ }
+ bool IsContainer() { return mFlags & ROW_FLAG_CONTAINER; }
+
+ void SetOpen(bool aOpen) {
+ aOpen ? mFlags |= ROW_FLAG_OPEN : mFlags &= ~ROW_FLAG_OPEN;
+ }
+ bool IsOpen() { return !!(mFlags & ROW_FLAG_OPEN); }
+
+ void SetEmpty(bool aEmpty) {
+ aEmpty ? mFlags |= ROW_FLAG_EMPTY : mFlags &= ~ROW_FLAG_EMPTY;
+ }
+ bool IsEmpty() { return !!(mFlags & ROW_FLAG_EMPTY); }
+
+ void SetSeparator(bool aSeparator) {
+ aSeparator ? mFlags |= ROW_FLAG_SEPARATOR : mFlags &= ~ROW_FLAG_SEPARATOR;
+ }
+ bool IsSeparator() { return !!(mFlags & ROW_FLAG_SEPARATOR); }
+
+ // Weak reference to a content item.
+ nsIContent* mContent;
+
+ // The parent index of the item, set to -1 for the top level items.
+ int32_t mParentIndex;
+
+ // Subtree size for this item.
+ int32_t mSubtreeSize;
+
+ private:
+ // State flags
+ int8_t mFlags;
+};
+
+
+// We don't reference count the reference to the document
+// If the document goes away first, we'll be informed and we
+// can drop our reference.
+// If we go away first, we'll get rid of ourselves from the
+// document's observer list.
+
+nsTreeContentView::nsTreeContentView(void) :
+ mBoxObject(nullptr),
+ mSelection(nullptr),
+ mRoot(nullptr),
+ mDocument(nullptr)
+{
+}
+
+nsTreeContentView::~nsTreeContentView(void)
+{
+ // Remove ourselves from mDocument's observers.
+ if (mDocument)
+ mDocument->RemoveObserver(this);
+}
+
+nsresult
+NS_NewTreeContentView(nsITreeView** aResult)
+{
+ *aResult = new nsTreeContentView;
+ if (! *aResult)
+ return NS_ERROR_OUT_OF_MEMORY;
+ NS_ADDREF(*aResult);
+ return NS_OK;
+}
+
+NS_IMPL_CYCLE_COLLECTION(nsTreeContentView,
+ mBoxObject,
+ mSelection,
+ mRoot,
+ mBody)
+
+NS_IMPL_CYCLE_COLLECTING_ADDREF(nsTreeContentView)
+NS_IMPL_CYCLE_COLLECTING_RELEASE(nsTreeContentView)
+
+NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(nsTreeContentView)
+ NS_INTERFACE_MAP_ENTRY(nsITreeView)
+ NS_INTERFACE_MAP_ENTRY(nsITreeContentView)
+ NS_INTERFACE_MAP_ENTRY(nsIDocumentObserver)
+ NS_INTERFACE_MAP_ENTRY(nsIMutationObserver)
+ NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsITreeContentView)
+ NS_DOM_INTERFACE_MAP_ENTRY_CLASSINFO(TreeContentView)
+NS_INTERFACE_MAP_END
+
+NS_IMETHODIMP
+nsTreeContentView::GetRowCount(int32_t* aRowCount)
+{
+ *aRowCount = mRows.Length();
+
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsTreeContentView::GetSelection(nsITreeSelection** aSelection)
+{
+ NS_IF_ADDREF(*aSelection = mSelection);
+
+ return NS_OK;
+}
+
+bool
+nsTreeContentView::CanTrustTreeSelection(nsISupports* aValue)
+{
+ // Untrusted content is only allowed to specify known-good views
+ if (nsContentUtils::LegacyIsCallerChromeOrNativeCode())
+ return true;
+ nsCOMPtr<nsINativeTreeSelection> nativeTreeSel = do_QueryInterface(aValue);
+ return nativeTreeSel && NS_SUCCEEDED(nativeTreeSel->EnsureNative());
+}
+
+NS_IMETHODIMP
+nsTreeContentView::SetSelection(nsITreeSelection* aSelection)
+{
+ NS_ENSURE_TRUE(!aSelection || CanTrustTreeSelection(aSelection),
+ NS_ERROR_DOM_SECURITY_ERR);
+
+ mSelection = aSelection;
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsTreeContentView::GetRowProperties(int32_t aIndex, nsAString& aProps)
+{
+ NS_PRECONDITION(aIndex >= 0 && aIndex < int32_t(mRows.Length()), "bad index");
+ if (aIndex < 0 || aIndex >= int32_t(mRows.Length()))
+ return NS_ERROR_INVALID_ARG;
+
+ Row* row = mRows[aIndex].get();
+ nsIContent* realRow;
+ if (row->IsSeparator())
+ realRow = row->mContent;
+ else
+ realRow = nsTreeUtils::GetImmediateChild(row->mContent, nsGkAtoms::treerow);
+
+ if (realRow) {
+ realRow->GetAttr(kNameSpaceID_None, nsGkAtoms::properties, aProps);
+ }
+
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsTreeContentView::GetCellProperties(int32_t aRow, nsITreeColumn* aCol,
+ nsAString& aProps)
+{
+ NS_ENSURE_NATIVE_COLUMN(aCol);
+ NS_PRECONDITION(aRow >= 0 && aRow < int32_t(mRows.Length()), "bad row");
+ if (aRow < 0 || aRow >= int32_t(mRows.Length()))
+ return NS_ERROR_INVALID_ARG;
+
+ Row* row = mRows[aRow].get();
+ nsIContent* realRow =
+ nsTreeUtils::GetImmediateChild(row->mContent, nsGkAtoms::treerow);
+ if (realRow) {
+ nsIContent* cell = GetCell(realRow, aCol);
+ if (cell) {
+ cell->GetAttr(kNameSpaceID_None, nsGkAtoms::properties, aProps);
+ }
+ }
+
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsTreeContentView::GetColumnProperties(nsITreeColumn* aCol, nsAString& aProps)
+{
+ NS_ENSURE_NATIVE_COLUMN(aCol);
+ nsCOMPtr<nsIDOMElement> element;
+ aCol->GetElement(getter_AddRefs(element));
+
+ element->GetAttribute(NS_LITERAL_STRING("properties"), aProps);
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsTreeContentView::IsContainer(int32_t aIndex, bool* _retval)
+{
+ NS_PRECONDITION(aIndex >= 0 && aIndex < int32_t(mRows.Length()), "bad index");
+ if (aIndex < 0 || aIndex >= int32_t(mRows.Length()))
+ return NS_ERROR_INVALID_ARG;
+
+ *_retval = mRows[aIndex]->IsContainer();
+
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsTreeContentView::IsContainerOpen(int32_t aIndex, bool* _retval)
+{
+ NS_PRECONDITION(aIndex >= 0 && aIndex < int32_t(mRows.Length()), "bad index");
+ if (aIndex < 0 || aIndex >= int32_t(mRows.Length()))
+ return NS_ERROR_INVALID_ARG;
+
+ *_retval = mRows[aIndex]->IsOpen();
+
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsTreeContentView::IsContainerEmpty(int32_t aIndex, bool* _retval)
+{
+ NS_PRECONDITION(aIndex >= 0 && aIndex < int32_t(mRows.Length()), "bad index");
+ if (aIndex < 0 || aIndex >= int32_t(mRows.Length()))
+ return NS_ERROR_INVALID_ARG;
+
+ *_retval = mRows[aIndex]->IsEmpty();
+
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsTreeContentView::IsSeparator(int32_t aIndex, bool *_retval)
+{
+ NS_PRECONDITION(aIndex >= 0 && aIndex < int32_t(mRows.Length()), "bad index");
+ if (aIndex < 0 || aIndex >= int32_t(mRows.Length()))
+ return NS_ERROR_INVALID_ARG;
+
+ *_retval = mRows[aIndex]->IsSeparator();
+
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsTreeContentView::IsSorted(bool *_retval)
+{
+ *_retval = false;
+
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsTreeContentView::CanDrop(int32_t aIndex, int32_t aOrientation,
+ nsIDOMDataTransfer* aDataTransfer, bool *_retval)
+{
+ NS_PRECONDITION(aIndex >= 0 && aIndex < int32_t(mRows.Length()), "bad index");
+ if (aIndex < 0 || aIndex >= int32_t(mRows.Length()))
+ return NS_ERROR_INVALID_ARG;
+
+ *_retval = false;
+
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsTreeContentView::Drop(int32_t aRow, int32_t aOrientation, nsIDOMDataTransfer* aDataTransfer)
+{
+ NS_PRECONDITION(aRow >= 0 && aRow < int32_t(mRows.Length()), "bad row");
+ if (aRow < 0 || aRow >= int32_t(mRows.Length()))
+ return NS_ERROR_INVALID_ARG;
+
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsTreeContentView::GetParentIndex(int32_t aRowIndex, int32_t* _retval)
+{
+ NS_PRECONDITION(aRowIndex >= 0 && aRowIndex < int32_t(mRows.Length()),
+ "bad row index");
+ if (aRowIndex < 0 || aRowIndex >= int32_t(mRows.Length()))
+ return NS_ERROR_INVALID_ARG;
+
+ *_retval = mRows[aRowIndex]->mParentIndex;
+
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsTreeContentView::HasNextSibling(int32_t aRowIndex, int32_t aAfterIndex, bool* _retval)
+{
+ NS_PRECONDITION(aRowIndex >= 0 && aRowIndex < int32_t(mRows.Length()),
+ "bad row index");
+ if (aRowIndex < 0 || aRowIndex >= int32_t(mRows.Length()))
+ return NS_ERROR_INVALID_ARG;
+
+ // We have a next sibling if the row is not the last in the subtree.
+ int32_t parentIndex = mRows[aRowIndex]->mParentIndex;
+ if (parentIndex >= 0) {
+ // Compute the last index in this subtree.
+ int32_t lastIndex = parentIndex + (mRows[parentIndex])->mSubtreeSize;
+ Row* row = mRows[lastIndex].get();
+ while (row->mParentIndex != parentIndex) {
+ lastIndex = row->mParentIndex;
+ row = mRows[lastIndex].get();
+ }
+
+ *_retval = aRowIndex < lastIndex;
+ }
+ else {
+ *_retval = uint32_t(aRowIndex) < mRows.Length() - 1;
+ }
+
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsTreeContentView::GetLevel(int32_t aIndex, int32_t* _retval)
+{
+ NS_PRECONDITION(aIndex >= 0 && aIndex < int32_t(mRows.Length()), "bad index");
+ if (aIndex < 0 || aIndex >= int32_t(mRows.Length()))
+ return NS_ERROR_INVALID_ARG;
+
+ int32_t level = 0;
+ Row* row = mRows[aIndex].get();
+ while (row->mParentIndex >= 0) {
+ level++;
+ row = mRows[row->mParentIndex].get();
+ }
+ *_retval = level;
+
+ return NS_OK;
+}
+
+ NS_IMETHODIMP
+nsTreeContentView::GetImageSrc(int32_t aRow, nsITreeColumn* aCol, nsAString& _retval)
+{
+ _retval.Truncate();
+ NS_ENSURE_NATIVE_COLUMN(aCol);
+ NS_PRECONDITION(aRow >= 0 && aRow < int32_t(mRows.Length()), "bad row");
+ if (aRow < 0 || aRow >= int32_t(mRows.Length()))
+ return NS_ERROR_INVALID_ARG;
+
+ Row* row = mRows[aRow].get();
+
+ nsIContent* realRow =
+ nsTreeUtils::GetImmediateChild(row->mContent, nsGkAtoms::treerow);
+ if (realRow) {
+ nsIContent* cell = GetCell(realRow, aCol);
+ if (cell)
+ cell->GetAttr(kNameSpaceID_None, nsGkAtoms::src, _retval);
+ }
+
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsTreeContentView::GetProgressMode(int32_t aRow, nsITreeColumn* aCol, int32_t* _retval)
+{
+ NS_ENSURE_NATIVE_COLUMN(aCol);
+ NS_PRECONDITION(aRow >= 0 && aRow < int32_t(mRows.Length()), "bad row");
+ if (aRow < 0 || aRow >= int32_t(mRows.Length()))
+ return NS_ERROR_INVALID_ARG;
+
+ *_retval = nsITreeView::PROGRESS_NONE;
+
+ Row* row = mRows[aRow].get();
+
+ nsIContent* realRow =
+ nsTreeUtils::GetImmediateChild(row->mContent, nsGkAtoms::treerow);
+ if (realRow) {
+ nsIContent* cell = GetCell(realRow, aCol);
+ if (cell) {
+ static nsIContent::AttrValuesArray strings[] =
+ {&nsGkAtoms::normal, &nsGkAtoms::undetermined, nullptr};
+ switch (cell->FindAttrValueIn(kNameSpaceID_None, nsGkAtoms::mode,
+ strings, eCaseMatters)) {
+ case 0: *_retval = nsITreeView::PROGRESS_NORMAL; break;
+ case 1: *_retval = nsITreeView::PROGRESS_UNDETERMINED; break;
+ }
+ }
+ }
+
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsTreeContentView::GetCellValue(int32_t aRow, nsITreeColumn* aCol, nsAString& _retval)
+{
+ _retval.Truncate();
+ NS_ENSURE_NATIVE_COLUMN(aCol);
+ NS_PRECONDITION(aRow >= 0 && aRow < int32_t(mRows.Length()), "bad row");
+ if (aRow < 0 || aRow >= int32_t(mRows.Length()))
+ return NS_ERROR_INVALID_ARG;
+
+ Row* row = mRows[aRow].get();
+
+ nsIContent* realRow =
+ nsTreeUtils::GetImmediateChild(row->mContent, nsGkAtoms::treerow);
+ if (realRow) {
+ nsIContent* cell = GetCell(realRow, aCol);
+ if (cell)
+ cell->GetAttr(kNameSpaceID_None, nsGkAtoms::value, _retval);
+ }
+
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsTreeContentView::GetCellText(int32_t aRow, nsITreeColumn* aCol, nsAString& _retval)
+{
+ _retval.Truncate();
+ NS_ENSURE_NATIVE_COLUMN(aCol);
+ NS_PRECONDITION(aRow >= 0 && aRow < int32_t(mRows.Length()), "bad row");
+ NS_PRECONDITION(aCol, "bad column");
+
+ if (aRow < 0 || aRow >= int32_t(mRows.Length()) || !aCol)
+ return NS_ERROR_INVALID_ARG;
+
+ Row* row = mRows[aRow].get();
+
+ // Check for a "label" attribute - this is valid on an <treeitem>
+ // with a single implied column.
+ if (row->mContent->GetAttr(kNameSpaceID_None, nsGkAtoms::label, _retval)
+ && !_retval.IsEmpty())
+ return NS_OK;
+
+ if (row->mContent->IsXULElement(nsGkAtoms::treeitem)) {
+ nsIContent* realRow =
+ nsTreeUtils::GetImmediateChild(row->mContent, nsGkAtoms::treerow);
+ if (realRow) {
+ nsIContent* cell = GetCell(realRow, aCol);
+ if (cell)
+ cell->GetAttr(kNameSpaceID_None, nsGkAtoms::label, _retval);
+ }
+ }
+
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsTreeContentView::SetTree(nsITreeBoxObject* aTree)
+{
+ ClearRows();
+
+ mBoxObject = aTree;
+
+ MOZ_ASSERT(!mRoot, "mRoot should have been cleared out by ClearRows");
+
+ if (aTree) {
+ // Get our root element
+ nsCOMPtr<nsIBoxObject> boxObject = do_QueryInterface(mBoxObject);
+ if (!boxObject) {
+ mBoxObject = nullptr;
+ return NS_ERROR_INVALID_ARG;
+ }
+ nsCOMPtr<nsIDOMElement> element;
+ boxObject->GetElement(getter_AddRefs(element));
+
+ mRoot = do_QueryInterface(element);
+ NS_ENSURE_STATE(mRoot);
+
+ // Add ourselves to document's observers.
+ nsIDocument* document = mRoot->GetComposedDoc();
+ if (document) {
+ document->AddObserver(this);
+ mDocument = document;
+ }
+
+ nsCOMPtr<nsIDOMElement> bodyElement;
+ mBoxObject->GetTreeBody(getter_AddRefs(bodyElement));
+ if (bodyElement) {
+ mBody = do_QueryInterface(bodyElement);
+ int32_t index = 0;
+ Serialize(mBody, -1, &index, mRows);
+ }
+ }
+
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsTreeContentView::ToggleOpenState(int32_t aIndex)
+{
+ NS_PRECONDITION(aIndex >= 0 && aIndex < int32_t(mRows.Length()), "bad index");
+ if (aIndex < 0 || aIndex >= int32_t(mRows.Length()))
+ return NS_ERROR_INVALID_ARG;
+
+ // We don't serialize content right here, since content might be generated
+ // lazily.
+ Row* row = mRows[aIndex].get();
+
+ if (row->IsOpen())
+ row->mContent->SetAttr(kNameSpaceID_None, nsGkAtoms::open, NS_LITERAL_STRING("false"), true);
+ else
+ row->mContent->SetAttr(kNameSpaceID_None, nsGkAtoms::open, NS_LITERAL_STRING("true"), true);
+
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsTreeContentView::CycleHeader(nsITreeColumn* aCol)
+{
+ NS_ENSURE_NATIVE_COLUMN(aCol);
+
+ if (!mRoot)
+ return NS_OK;
+
+ nsCOMPtr<nsIDOMElement> element;
+ aCol->GetElement(getter_AddRefs(element));
+ if (element) {
+ nsCOMPtr<nsIContent> column = do_QueryInterface(element);
+ nsAutoString sort;
+ column->GetAttr(kNameSpaceID_None, nsGkAtoms::sort, sort);
+ if (!sort.IsEmpty()) {
+ nsCOMPtr<nsIXULSortService> xs = do_GetService("@mozilla.org/xul/xul-sort-service;1");
+ if (xs) {
+ nsAutoString sortdirection;
+ static nsIContent::AttrValuesArray strings[] =
+ {&nsGkAtoms::ascending, &nsGkAtoms::descending, nullptr};
+ switch (column->FindAttrValueIn(kNameSpaceID_None,
+ nsGkAtoms::sortDirection,
+ strings, eCaseMatters)) {
+ case 0: sortdirection.AssignLiteral("descending"); break;
+ case 1: sortdirection.AssignLiteral("natural"); break;
+ default: sortdirection.AssignLiteral("ascending"); break;
+ }
+
+ nsAutoString hints;
+ column->GetAttr(kNameSpaceID_None, nsGkAtoms::sorthints, hints);
+ sortdirection.Append(' ');
+ sortdirection += hints;
+
+ nsCOMPtr<nsIDOMNode> rootnode = do_QueryInterface(mRoot);
+ xs->Sort(rootnode, sort, sortdirection);
+ }
+ }
+ }
+
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsTreeContentView::SelectionChanged()
+{
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsTreeContentView::CycleCell(int32_t aRow, nsITreeColumn* aCol)
+{
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsTreeContentView::IsEditable(int32_t aRow, nsITreeColumn* aCol, bool* _retval)
+{
+ *_retval = false;
+ NS_ENSURE_NATIVE_COLUMN(aCol);
+ NS_PRECONDITION(aRow >= 0 && aRow < int32_t(mRows.Length()), "bad row");
+ if (aRow < 0 || aRow >= int32_t(mRows.Length()))
+ return NS_ERROR_INVALID_ARG;
+
+ *_retval = true;
+
+ Row* row = mRows[aRow].get();
+
+ nsIContent* realRow =
+ nsTreeUtils::GetImmediateChild(row->mContent, nsGkAtoms::treerow);
+ if (realRow) {
+ nsIContent* cell = GetCell(realRow, aCol);
+ if (cell && cell->AttrValueIs(kNameSpaceID_None, nsGkAtoms::editable,
+ nsGkAtoms::_false, eCaseMatters)) {
+ *_retval = false;
+ }
+ }
+
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsTreeContentView::IsSelectable(int32_t aRow, nsITreeColumn* aCol, bool* _retval)
+{
+ NS_ENSURE_NATIVE_COLUMN(aCol);
+ NS_PRECONDITION(aRow >= 0 && aRow < int32_t(mRows.Length()), "bad row");
+ if (aRow < 0 || aRow >= int32_t(mRows.Length()))
+ return NS_ERROR_INVALID_ARG;
+
+ *_retval = true;
+
+ Row* row = mRows[aRow].get();
+
+ nsIContent* realRow =
+ nsTreeUtils::GetImmediateChild(row->mContent, nsGkAtoms::treerow);
+ if (realRow) {
+ nsIContent* cell = GetCell(realRow, aCol);
+ if (cell && cell->AttrValueIs(kNameSpaceID_None, nsGkAtoms::selectable,
+ nsGkAtoms::_false, eCaseMatters)) {
+ *_retval = false;
+ }
+ }
+
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsTreeContentView::SetCellValue(int32_t aRow, nsITreeColumn* aCol, const nsAString& aValue)
+{
+ NS_ENSURE_NATIVE_COLUMN(aCol);
+ NS_PRECONDITION(aRow >= 0 && aRow < int32_t(mRows.Length()), "bad row");
+ if (aRow < 0 || aRow >= int32_t(mRows.Length()))
+ return NS_ERROR_INVALID_ARG;
+
+ Row* row = mRows[aRow].get();
+
+ nsIContent* realRow =
+ nsTreeUtils::GetImmediateChild(row->mContent, nsGkAtoms::treerow);
+ if (realRow) {
+ nsIContent* cell = GetCell(realRow, aCol);
+ if (cell)
+ cell->SetAttr(kNameSpaceID_None, nsGkAtoms::value, aValue, true);
+ }
+
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsTreeContentView::SetCellText(int32_t aRow, nsITreeColumn* aCol, const nsAString& aValue)
+{
+ NS_ENSURE_NATIVE_COLUMN(aCol);
+ NS_PRECONDITION(aRow >= 0 && aRow < int32_t(mRows.Length()), "bad row");
+ if (aRow < 0 || aRow >= int32_t(mRows.Length()))
+ return NS_ERROR_INVALID_ARG;
+
+ Row* row = mRows[aRow].get();
+
+ nsIContent* realRow =
+ nsTreeUtils::GetImmediateChild(row->mContent, nsGkAtoms::treerow);
+ if (realRow) {
+ nsIContent* cell = GetCell(realRow, aCol);
+ if (cell)
+ cell->SetAttr(kNameSpaceID_None, nsGkAtoms::label, aValue, true);
+ }
+
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsTreeContentView::PerformAction(const char16_t* aAction)
+{
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsTreeContentView::PerformActionOnRow(const char16_t* aAction, int32_t aRow)
+{
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsTreeContentView::PerformActionOnCell(const char16_t* aAction, int32_t aRow, nsITreeColumn* aCol)
+{
+ return NS_OK;
+}
+
+
+NS_IMETHODIMP
+nsTreeContentView::GetItemAtIndex(int32_t aIndex, nsIDOMElement** _retval)
+{
+ NS_PRECONDITION(aIndex >= 0 && aIndex < int32_t(mRows.Length()), "bad index");
+ if (aIndex < 0 || aIndex >= int32_t(mRows.Length()))
+ return NS_ERROR_INVALID_ARG;
+
+ Row* row = mRows[aIndex].get();
+ row->mContent->QueryInterface(NS_GET_IID(nsIDOMElement), (void**)_retval);
+
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsTreeContentView::GetIndexOfItem(nsIDOMElement* aItem, int32_t* _retval)
+{
+ nsCOMPtr<nsIContent> content = do_QueryInterface(aItem);
+ *_retval = FindContent(content);
+
+ return NS_OK;
+}
+
+void
+nsTreeContentView::AttributeChanged(nsIDocument* aDocument,
+ dom::Element* aElement,
+ int32_t aNameSpaceID,
+ nsIAtom* aAttribute,
+ int32_t aModType,
+ const nsAttrValue* aOldValue)
+{
+ // Lots of codepaths under here that do all sorts of stuff, so be safe.
+ nsCOMPtr<nsIMutationObserver> kungFuDeathGrip(this);
+
+ // Make sure this notification concerns us.
+ // First check the tag to see if it's one that we care about.
+
+ if (mBoxObject && (aElement == mRoot || aElement == mBody)) {
+ mBoxObject->ClearStyleAndImageCaches();
+ mBoxObject->Invalidate();
+ }
+
+ // We don't consider non-XUL nodes.
+ nsIContent* parent = nullptr;
+ if (!aElement->IsXULElement() ||
+ ((parent = aElement->GetParent()) && !parent->IsXULElement())) {
+ return;
+ }
+ if (!aElement->IsAnyOfXULElements(nsGkAtoms::treecol,
+ nsGkAtoms::treeitem,
+ nsGkAtoms::treeseparator,
+ nsGkAtoms::treerow,
+ nsGkAtoms::treecell)) {
+ return;
+ }
+
+ // If we have a legal tag, go up to the tree/select and make sure
+ // that it's ours.
+
+ for (nsIContent* element = aElement; element != mBody; element = element->GetParent()) {
+ if (!element)
+ return; // this is not for us
+ if (element->IsXULElement(nsGkAtoms::tree))
+ return; // this is not for us
+ }
+
+ // Handle changes of the hidden attribute.
+ if (aAttribute == nsGkAtoms::hidden &&
+ aElement->IsAnyOfXULElements(nsGkAtoms::treeitem,
+ nsGkAtoms::treeseparator)) {
+ bool hidden = aElement->AttrValueIs(kNameSpaceID_None,
+ nsGkAtoms::hidden,
+ nsGkAtoms::_true, eCaseMatters);
+
+ int32_t index = FindContent(aElement);
+ if (hidden && index >= 0) {
+ // Hide this row along with its children.
+ int32_t count = RemoveRow(index);
+ if (mBoxObject)
+ mBoxObject->RowCountChanged(index, -count);
+ }
+ else if (!hidden && index < 0) {
+ // Show this row along with its children.
+ nsCOMPtr<nsIContent> parent = aElement->GetParent();
+ if (parent) {
+ InsertRowFor(parent, aElement);
+ }
+ }
+
+ return;
+ }
+
+ if (aElement->IsXULElement(nsGkAtoms::treecol)) {
+ if (aAttribute == nsGkAtoms::properties) {
+ if (mBoxObject) {
+ nsCOMPtr<nsITreeColumns> cols;
+ mBoxObject->GetColumns(getter_AddRefs(cols));
+ if (cols) {
+ nsCOMPtr<nsIDOMElement> element = do_QueryInterface(aElement);
+ nsCOMPtr<nsITreeColumn> col;
+ cols->GetColumnFor(element, getter_AddRefs(col));
+ mBoxObject->InvalidateColumn(col);
+ }
+ }
+ }
+ }
+ else if (aElement->IsXULElement(nsGkAtoms::treeitem)) {
+ int32_t index = FindContent(aElement);
+ if (index >= 0) {
+ Row* row = mRows[index].get();
+ if (aAttribute == nsGkAtoms::container) {
+ bool isContainer =
+ aElement->AttrValueIs(kNameSpaceID_None, nsGkAtoms::container,
+ nsGkAtoms::_true, eCaseMatters);
+ row->SetContainer(isContainer);
+ if (mBoxObject)
+ mBoxObject->InvalidateRow(index);
+ }
+ else if (aAttribute == nsGkAtoms::open) {
+ bool isOpen =
+ aElement->AttrValueIs(kNameSpaceID_None, nsGkAtoms::open,
+ nsGkAtoms::_true, eCaseMatters);
+ bool wasOpen = row->IsOpen();
+ if (! isOpen && wasOpen)
+ CloseContainer(index);
+ else if (isOpen && ! wasOpen)
+ OpenContainer(index);
+ }
+ else if (aAttribute == nsGkAtoms::empty) {
+ bool isEmpty =
+ aElement->AttrValueIs(kNameSpaceID_None, nsGkAtoms::empty,
+ nsGkAtoms::_true, eCaseMatters);
+ row->SetEmpty(isEmpty);
+ if (mBoxObject)
+ mBoxObject->InvalidateRow(index);
+ }
+ }
+ }
+ else if (aElement->IsXULElement(nsGkAtoms::treeseparator)) {
+ int32_t index = FindContent(aElement);
+ if (index >= 0) {
+ if (aAttribute == nsGkAtoms::properties && mBoxObject) {
+ mBoxObject->InvalidateRow(index);
+ }
+ }
+ }
+ else if (aElement->IsXULElement(nsGkAtoms::treerow)) {
+ if (aAttribute == nsGkAtoms::properties) {
+ nsCOMPtr<nsIContent> parent = aElement->GetParent();
+ if (parent) {
+ int32_t index = FindContent(parent);
+ if (index >= 0 && mBoxObject) {
+ mBoxObject->InvalidateRow(index);
+ }
+ }
+ }
+ }
+ else if (aElement->IsXULElement(nsGkAtoms::treecell)) {
+ if (aAttribute == nsGkAtoms::ref ||
+ aAttribute == nsGkAtoms::properties ||
+ aAttribute == nsGkAtoms::mode ||
+ aAttribute == nsGkAtoms::src ||
+ aAttribute == nsGkAtoms::value ||
+ aAttribute == nsGkAtoms::label) {
+ nsIContent* parent = aElement->GetParent();
+ if (parent) {
+ nsCOMPtr<nsIContent> grandParent = parent->GetParent();
+ if (grandParent && grandParent->IsXULElement()) {
+ int32_t index = FindContent(grandParent);
+ if (index >= 0 && mBoxObject) {
+ // XXX Should we make an effort to invalidate only cell ?
+ mBoxObject->InvalidateRow(index);
+ }
+ }
+ }
+ }
+ }
+}
+
+void
+nsTreeContentView::ContentAppended(nsIDocument *aDocument,
+ nsIContent* aContainer,
+ nsIContent* aFirstNewContent,
+ int32_t /* unused */)
+{
+ for (nsIContent* cur = aFirstNewContent; cur; cur = cur->GetNextSibling()) {
+ // Our contentinserted doesn't use the index
+ ContentInserted(aDocument, aContainer, cur, 0);
+ }
+}
+
+void
+nsTreeContentView::ContentInserted(nsIDocument *aDocument,
+ nsIContent* aContainer,
+ nsIContent* aChild,
+ int32_t /* unused */)
+{
+ NS_ASSERTION(aChild, "null ptr");
+
+ // Make sure this notification concerns us.
+ // First check the tag to see if it's one that we care about.
+
+ // Don't allow non-XUL nodes.
+ if (!aChild->IsXULElement() || !aContainer->IsXULElement())
+ return;
+
+ if (!aChild->IsAnyOfXULElements(nsGkAtoms::treeitem,
+ nsGkAtoms::treeseparator,
+ nsGkAtoms::treechildren,
+ nsGkAtoms::treerow,
+ nsGkAtoms::treecell)) {
+ return;
+ }
+
+ // If we have a legal tag, go up to the tree/select and make sure
+ // that it's ours.
+
+ for (nsIContent* element = aContainer; element != mBody; element = element->GetParent()) {
+ if (!element)
+ return; // this is not for us
+ if (element->IsXULElement(nsGkAtoms::tree))
+ return; // this is not for us
+ }
+
+ // Lots of codepaths under here that do all sorts of stuff, so be safe.
+ nsCOMPtr<nsIMutationObserver> kungFuDeathGrip(this);
+
+ if (aChild->IsXULElement(nsGkAtoms::treechildren)) {
+ int32_t index = FindContent(aContainer);
+ if (index >= 0) {
+ Row* row = mRows[index].get();
+ row->SetEmpty(false);
+ if (mBoxObject)
+ mBoxObject->InvalidateRow(index);
+ if (row->IsContainer() && row->IsOpen()) {
+ int32_t count = EnsureSubtree(index);
+ if (mBoxObject)
+ mBoxObject->RowCountChanged(index + 1, count);
+ }
+ }
+ }
+ else if (aChild->IsAnyOfXULElements(nsGkAtoms::treeitem,
+ nsGkAtoms::treeseparator)) {
+ InsertRowFor(aContainer, aChild);
+ }
+ else if (aChild->IsXULElement(nsGkAtoms::treerow)) {
+ int32_t index = FindContent(aContainer);
+ if (index >= 0 && mBoxObject)
+ mBoxObject->InvalidateRow(index);
+ }
+ else if (aChild->IsXULElement(nsGkAtoms::treecell)) {
+ nsCOMPtr<nsIContent> parent = aContainer->GetParent();
+ if (parent) {
+ int32_t index = FindContent(parent);
+ if (index >= 0 && mBoxObject)
+ mBoxObject->InvalidateRow(index);
+ }
+ }
+}
+
+void
+nsTreeContentView::ContentRemoved(nsIDocument *aDocument,
+ nsIContent* aContainer,
+ nsIContent* aChild,
+ int32_t aIndexInContainer,
+ nsIContent* aPreviousSibling)
+{
+ NS_ASSERTION(aChild, "null ptr");
+
+ // Make sure this notification concerns us.
+ // First check the tag to see if it's one that we care about.
+
+ // We don't consider non-XUL nodes.
+ if (!aChild->IsXULElement() || !aContainer->IsXULElement())
+ return;
+
+ if (!aChild->IsAnyOfXULElements(nsGkAtoms::treeitem,
+ nsGkAtoms::treeseparator,
+ nsGkAtoms::treechildren,
+ nsGkAtoms::treerow,
+ nsGkAtoms::treecell)) {
+ return;
+ }
+
+ // If we have a legal tag, go up to the tree/select and make sure
+ // that it's ours.
+
+ for (nsIContent* element = aContainer; element != mBody; element = element->GetParent()) {
+ if (!element)
+ return; // this is not for us
+ if (element->IsXULElement(nsGkAtoms::tree))
+ return; // this is not for us
+ }
+
+ // Lots of codepaths under here that do all sorts of stuff, so be safe.
+ nsCOMPtr<nsIMutationObserver> kungFuDeathGrip(this);
+
+ if (aChild->IsXULElement(nsGkAtoms::treechildren)) {
+ int32_t index = FindContent(aContainer);
+ if (index >= 0) {
+ Row* row = mRows[index].get();
+ row->SetEmpty(true);
+ int32_t count = RemoveSubtree(index);
+ // Invalidate also the row to update twisty.
+ if (mBoxObject) {
+ mBoxObject->InvalidateRow(index);
+ mBoxObject->RowCountChanged(index + 1, -count);
+ }
+ }
+ }
+ else if (aChild->IsAnyOfXULElements(nsGkAtoms::treeitem,
+ nsGkAtoms::treeseparator)) {
+ int32_t index = FindContent(aChild);
+ if (index >= 0) {
+ int32_t count = RemoveRow(index);
+ if (mBoxObject)
+ mBoxObject->RowCountChanged(index, -count);
+ }
+ }
+ else if (aChild->IsXULElement(nsGkAtoms::treerow)) {
+ int32_t index = FindContent(aContainer);
+ if (index >= 0 && mBoxObject)
+ mBoxObject->InvalidateRow(index);
+ }
+ else if (aChild->IsXULElement(nsGkAtoms::treecell)) {
+ nsCOMPtr<nsIContent> parent = aContainer->GetParent();
+ if (parent) {
+ int32_t index = FindContent(parent);
+ if (index >= 0 && mBoxObject)
+ mBoxObject->InvalidateRow(index);
+ }
+ }
+}
+
+void
+nsTreeContentView::NodeWillBeDestroyed(const nsINode* aNode)
+{
+ // XXXbz do we need this strong ref? Do we drop refs to self in ClearRows?
+ nsCOMPtr<nsIMutationObserver> kungFuDeathGrip(this);
+ ClearRows();
+}
+
+
+// Recursively serialize content, starting with aContent.
+void
+nsTreeContentView::Serialize(nsIContent* aContent, int32_t aParentIndex,
+ int32_t* aIndex, nsTArray<UniquePtr<Row>>& aRows)
+{
+ // Don't allow non-XUL nodes.
+ if (!aContent->IsXULElement())
+ return;
+
+ dom::FlattenedChildIterator iter(aContent);
+ for (nsIContent* content = iter.GetNextChild(); content; content = iter.GetNextChild()) {
+ int32_t count = aRows.Length();
+
+ if (content->IsXULElement(nsGkAtoms::treeitem)) {
+ SerializeItem(content, aParentIndex, aIndex, aRows);
+ } else if (content->IsXULElement(nsGkAtoms::treeseparator)) {
+ SerializeSeparator(content, aParentIndex, aIndex, aRows);
+ }
+
+ *aIndex += aRows.Length() - count;
+ }
+}
+
+void
+nsTreeContentView::SerializeItem(nsIContent* aContent, int32_t aParentIndex,
+ int32_t* aIndex, nsTArray<UniquePtr<Row>>& aRows)
+{
+ if (aContent->AttrValueIs(kNameSpaceID_None, nsGkAtoms::hidden,
+ nsGkAtoms::_true, eCaseMatters))
+ return;
+
+ aRows.AppendElement(MakeUnique<Row>(aContent, aParentIndex));
+ Row* row = aRows.LastElement().get();
+
+ if (aContent->AttrValueIs(kNameSpaceID_None, nsGkAtoms::container,
+ nsGkAtoms::_true, eCaseMatters)) {
+ row->SetContainer(true);
+ if (aContent->AttrValueIs(kNameSpaceID_None, nsGkAtoms::open,
+ nsGkAtoms::_true, eCaseMatters)) {
+ row->SetOpen(true);
+ nsIContent* child =
+ nsTreeUtils::GetImmediateChild(aContent, nsGkAtoms::treechildren);
+ if (child && child->IsXULElement()) {
+ // Now, recursively serialize our child.
+ int32_t count = aRows.Length();
+ int32_t index = 0;
+ Serialize(child, aParentIndex + *aIndex + 1, &index, aRows);
+ row->mSubtreeSize += aRows.Length() - count;
+ }
+ else
+ row->SetEmpty(true);
+ } else if (aContent->AttrValueIs(kNameSpaceID_None, nsGkAtoms::empty,
+ nsGkAtoms::_true, eCaseMatters)) {
+ row->SetEmpty(true);
+ }
+ }
+}
+
+void
+nsTreeContentView::SerializeSeparator(nsIContent* aContent,
+ int32_t aParentIndex, int32_t* aIndex,
+ nsTArray<UniquePtr<Row>>& aRows)
+{
+ if (aContent->AttrValueIs(kNameSpaceID_None, nsGkAtoms::hidden,
+ nsGkAtoms::_true, eCaseMatters))
+ return;
+
+ auto row = MakeUnique<Row>(aContent, aParentIndex);
+ row->SetSeparator(true);
+ aRows.AppendElement(Move(row));
+}
+
+void
+nsTreeContentView::GetIndexInSubtree(nsIContent* aContainer,
+ nsIContent* aContent, int32_t* aIndex)
+{
+ uint32_t childCount = aContainer->GetChildCount();
+
+ if (!aContainer->IsXULElement())
+ return;
+
+ for (uint32_t i = 0; i < childCount; i++) {
+ nsIContent *content = aContainer->GetChildAt(i);
+
+ if (content == aContent)
+ break;
+
+ if (content->IsXULElement(nsGkAtoms::treeitem)) {
+ if (! content->AttrValueIs(kNameSpaceID_None, nsGkAtoms::hidden,
+ nsGkAtoms::_true, eCaseMatters)) {
+ (*aIndex)++;
+ if (content->AttrValueIs(kNameSpaceID_None, nsGkAtoms::container,
+ nsGkAtoms::_true, eCaseMatters) &&
+ content->AttrValueIs(kNameSpaceID_None, nsGkAtoms::open,
+ nsGkAtoms::_true, eCaseMatters)) {
+ nsIContent* child =
+ nsTreeUtils::GetImmediateChild(content, nsGkAtoms::treechildren);
+ if (child && child->IsXULElement())
+ GetIndexInSubtree(child, aContent, aIndex);
+ }
+ }
+ }
+ else if (content->IsXULElement(nsGkAtoms::treeseparator)) {
+ if (! content->AttrValueIs(kNameSpaceID_None, nsGkAtoms::hidden,
+ nsGkAtoms::_true, eCaseMatters))
+ (*aIndex)++;
+ }
+ }
+}
+
+int32_t
+nsTreeContentView::EnsureSubtree(int32_t aIndex)
+{
+ Row* row = mRows[aIndex].get();
+
+ nsIContent* child;
+ child = nsTreeUtils::GetImmediateChild(row->mContent, nsGkAtoms::treechildren);
+ if (!child || !child->IsXULElement()) {
+ return 0;
+ }
+
+ AutoTArray<UniquePtr<Row>, 8> rows;
+ int32_t index = 0;
+ Serialize(child, aIndex, &index, rows);
+ // Insert |rows| into |mRows| at position |aIndex|, by first creating empty
+ // UniquePtr entries and then Move'ing |rows|'s entries into them. (Note
+ // that we can't simply use InsertElementsAt with an array argument, since
+ // the destination can't steal ownership from its const source argument.)
+ UniquePtr<Row>* newRows = mRows.InsertElementsAt(aIndex + 1,
+ rows.Length());
+ for (nsTArray<Row>::index_type i = 0; i < rows.Length(); i++) {
+ newRows[i] = Move(rows[i]);
+ }
+ int32_t count = rows.Length();
+
+ row->mSubtreeSize += count;
+ UpdateSubtreeSizes(row->mParentIndex, count);
+
+ // Update parent indexes, but skip newly added rows.
+ // They already have correct values.
+ UpdateParentIndexes(aIndex, count + 1, count);
+
+ return count;
+}
+
+int32_t
+nsTreeContentView::RemoveSubtree(int32_t aIndex)
+{
+ Row* row = mRows[aIndex].get();
+ int32_t count = row->mSubtreeSize;
+
+ mRows.RemoveElementsAt(aIndex + 1, count);
+
+ row->mSubtreeSize -= count;
+ UpdateSubtreeSizes(row->mParentIndex, -count);
+
+ UpdateParentIndexes(aIndex, 0, -count);
+
+ return count;
+}
+
+void
+nsTreeContentView::InsertRowFor(nsIContent* aParent, nsIContent* aChild)
+{
+ int32_t grandParentIndex = -1;
+ bool insertRow = false;
+
+ nsCOMPtr<nsIContent> grandParent = aParent->GetParent();
+
+ if (grandParent->IsXULElement(nsGkAtoms::tree)) {
+ // Allow insertion to the outermost container.
+ insertRow = true;
+ }
+ else {
+ // Test insertion to an inner container.
+
+ // First try to find this parent in our array of rows, if we find one
+ // we can be sure that all other parents are open too.
+ grandParentIndex = FindContent(grandParent);
+ if (grandParentIndex >= 0) {
+ // Got it, now test if it is open.
+ if (mRows[grandParentIndex]->IsOpen())
+ insertRow = true;
+ }
+ }
+
+ if (insertRow) {
+ int32_t index = 0;
+ GetIndexInSubtree(aParent, aChild, &index);
+
+ int32_t count = InsertRow(grandParentIndex, index, aChild);
+ if (mBoxObject)
+ mBoxObject->RowCountChanged(grandParentIndex + index + 1, count);
+ }
+}
+
+int32_t
+nsTreeContentView::InsertRow(int32_t aParentIndex, int32_t aIndex, nsIContent* aContent)
+{
+ AutoTArray<UniquePtr<Row>, 8> rows;
+ if (aContent->IsXULElement(nsGkAtoms::treeitem)) {
+ SerializeItem(aContent, aParentIndex, &aIndex, rows);
+ } else if (aContent->IsXULElement(nsGkAtoms::treeseparator)) {
+ SerializeSeparator(aContent, aParentIndex, &aIndex, rows);
+ }
+
+ // We can't use InsertElementsAt since the destination can't steal
+ // ownership from its const source argument.
+ int32_t count = rows.Length();
+ for (nsTArray<Row>::index_type i = 0; i < size_t(count); i++) {
+ mRows.InsertElementAt(aParentIndex + aIndex + i + 1, Move(rows[i]));
+ }
+
+ UpdateSubtreeSizes(aParentIndex, count);
+
+ // Update parent indexes, but skip added rows.
+ // They already have correct values.
+ UpdateParentIndexes(aParentIndex + aIndex, count + 1, count);
+
+ return count;
+}
+
+int32_t
+nsTreeContentView::RemoveRow(int32_t aIndex)
+{
+ Row* row = mRows[aIndex].get();
+ int32_t count = row->mSubtreeSize + 1;
+ int32_t parentIndex = row->mParentIndex;
+
+ mRows.RemoveElementsAt(aIndex, count);
+
+ UpdateSubtreeSizes(parentIndex, -count);
+
+ UpdateParentIndexes(aIndex, 0, -count);
+
+ return count;
+}
+
+void
+nsTreeContentView::ClearRows()
+{
+ mRows.Clear();
+ mRoot = nullptr;
+ mBody = nullptr;
+ // Remove ourselves from mDocument's observers.
+ if (mDocument) {
+ mDocument->RemoveObserver(this);
+ mDocument = nullptr;
+ }
+}
+
+void
+nsTreeContentView::OpenContainer(int32_t aIndex)
+{
+ Row* row = mRows[aIndex].get();
+ row->SetOpen(true);
+
+ int32_t count = EnsureSubtree(aIndex);
+ if (mBoxObject) {
+ mBoxObject->InvalidateRow(aIndex);
+ mBoxObject->RowCountChanged(aIndex + 1, count);
+ }
+}
+
+void
+nsTreeContentView::CloseContainer(int32_t aIndex)
+{
+ Row* row = mRows[aIndex].get();
+ row->SetOpen(false);
+
+ int32_t count = RemoveSubtree(aIndex);
+ if (mBoxObject) {
+ mBoxObject->InvalidateRow(aIndex);
+ mBoxObject->RowCountChanged(aIndex + 1, -count);
+ }
+}
+
+int32_t
+nsTreeContentView::FindContent(nsIContent* aContent)
+{
+ for (uint32_t i = 0; i < mRows.Length(); i++) {
+ if (mRows[i]->mContent == aContent) {
+ return i;
+ }
+ }
+
+ return -1;
+}
+
+void
+nsTreeContentView::UpdateSubtreeSizes(int32_t aParentIndex, int32_t count)
+{
+ while (aParentIndex >= 0) {
+ Row* row = mRows[aParentIndex].get();
+ row->mSubtreeSize += count;
+ aParentIndex = row->mParentIndex;
+ }
+}
+
+void
+nsTreeContentView::UpdateParentIndexes(int32_t aIndex, int32_t aSkip, int32_t aCount)
+{
+ int32_t count = mRows.Length();
+ for (int32_t i = aIndex + aSkip; i < count; i++) {
+ Row* row = mRows[i].get();
+ if (row->mParentIndex > aIndex) {
+ row->mParentIndex += aCount;
+ }
+ }
+}
+
+nsIContent*
+nsTreeContentView::GetCell(nsIContent* aContainer, nsITreeColumn* aCol)
+{
+ nsCOMPtr<nsIAtom> colAtom;
+ int32_t colIndex;
+ aCol->GetAtom(getter_AddRefs(colAtom));
+ aCol->GetIndex(&colIndex);
+
+ // Traverse through cells, try to find the cell by "ref" attribute or by cell
+ // index in a row. "ref" attribute has higher priority.
+ nsIContent* result = nullptr;
+ int32_t j = 0;
+ dom::FlattenedChildIterator iter(aContainer);
+ for (nsIContent* cell = iter.GetNextChild(); cell; cell = iter.GetNextChild()) {
+ if (cell->IsXULElement(nsGkAtoms::treecell)) {
+ if (colAtom && cell->AttrValueIs(kNameSpaceID_None, nsGkAtoms::ref,
+ colAtom, eCaseMatters)) {
+ result = cell;
+ break;
+ }
+ else if (j == colIndex) {
+ result = cell;
+ }
+ j++;
+ }
+ }
+
+ return result;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-09-01 10:29:02 +0000