Source code

Revision control

Other Tools

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=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 "nsCOMPtr.h"
#include "nsTreeContentView.h"
#include "nsITreeSelection.h"
#include "ChildIterator.h"
#include "nsError.h"
#include "nsTreeBodyFrame.h"
#include "mozilla/dom/DOMRect.h"
#include "mozilla/dom/BindingUtils.h"
#include "mozilla/dom/Element.h"
#include "mozilla/dom/ToJSValue.h"
#include "mozilla/dom/XULTreeElement.h"
#include "mozilla/dom/XULTreeElementBinding.h"
namespace mozilla {
namespace dom {
NS_IMPL_ISUPPORTS_CYCLE_COLLECTION_INHERITED_0(XULTreeElement, nsXULElement)
NS_IMPL_CYCLE_COLLECTION_INHERITED(XULTreeElement, nsXULElement, mView)
JSObject* XULTreeElement::WrapNode(JSContext* aCx,
JS::Handle<JSObject*> aGivenProto) {
return XULTreeElement_Binding::Wrap(aCx, this, aGivenProto);
}
void XULTreeElement::UnbindFromTree(bool aNullParent) {
// Drop the view's ref to us.
if (mView) {
nsCOMPtr<nsITreeSelection> sel;
mView->GetSelection(getter_AddRefs(sel));
if (sel) {
sel->SetTree(nullptr);
}
mView->SetTree(nullptr); // Break the circular ref between the view and us.
}
mView = nullptr;
nsXULElement::UnbindFromTree(aNullParent);
}
void XULTreeElement::DestroyContent() {
// Drop the view's ref to us.
if (mView) {
nsCOMPtr<nsITreeSelection> sel;
mView->GetSelection(getter_AddRefs(sel));
if (sel) {
sel->SetTree(nullptr);
}
mView->SetTree(nullptr); // Break the circular ref between the view and us.
}
mView = nullptr;
nsXULElement::DestroyContent();
}
static nsIContent* FindBodyElement(nsIContent* aParent) {
mozilla::dom::FlattenedChildIterator iter(aParent);
for (nsIContent* content = iter.GetNextChild(); content;
content = iter.GetNextChild()) {
mozilla::dom::NodeInfo* ni = content->NodeInfo();
if (ni->Equals(nsGkAtoms::treechildren, kNameSpaceID_XUL)) {
return content;
} else if (ni->Equals(nsGkAtoms::tree, kNameSpaceID_XUL)) {
// There are nesting tree elements. Only the innermost should
// find the treechilren.
return nullptr;
} else if (content->IsElement() &&
!ni->Equals(nsGkAtoms::_template, kNameSpaceID_XUL)) {
nsIContent* result = FindBodyElement(content);
if (result) return result;
}
}
return nullptr;
}
nsTreeBodyFrame* XULTreeElement::GetTreeBodyFrame(FlushType aFlushType) {
MOZ_ASSERT(aFlushType == FlushType::Frames ||
aFlushType == FlushType::Layout || aFlushType == FlushType::None);
nsCOMPtr<nsIContent> kungFuDeathGrip = this; // keep a reference
// Make sure our frames are up to date, and layout as needed. We
// have to do this before checking for our cached mTreeBody, since
// it might go away on style flush, and in any case if aFlushLayout
// is true we need to make sure to flush no matter what.
if (aFlushType != FlushType::None) {
if (RefPtr<Document> doc = GetComposedDoc()) {
doc->FlushPendingNotifications(aFlushType);
}
}
if (mTreeBody) {
// Have one cached already.
return mTreeBody;
}
if (nsCOMPtr<nsIContent> tree = FindBodyElement(this)) {
mTreeBody = do_QueryFrame(tree->GetPrimaryFrame());
}
return mTreeBody;
}
already_AddRefed<nsITreeView> XULTreeElement::GetView() {
if (!mTreeBody) {
if (!GetTreeBodyFrame()) {
return nullptr;
}
if (mView) {
nsCOMPtr<nsITreeView> view;
// Our new frame needs to initialise itself
mTreeBody->GetView(getter_AddRefs(view));
return view.forget();
}
}
if (!mView) {
// No tree builder, create a tree content view.
if (NS_FAILED(NS_NewTreeContentView(getter_AddRefs(mView)))) {
return nullptr;
}
// Initialise the frame and view
mTreeBody->SetView(mView);
}
return do_AddRef(mView);
}
void XULTreeElement::SetView(nsITreeView* aView, CallerType aCallerType,
ErrorResult& aRv) {
if (aCallerType != CallerType::System) {
// Don't trust views coming from random places.
aRv.Throw(NS_ERROR_DOM_SECURITY_ERR);
return;
}
mView = aView;
nsTreeBodyFrame* body = GetTreeBodyFrame();
if (body) {
body->SetView(aView);
}
}
bool XULTreeElement::Focused() {
nsTreeBodyFrame* body = GetTreeBodyFrame();
if (body) {
return body->GetFocused();
}
return false;
}
void XULTreeElement::SetFocused(bool aFocused) {
nsTreeBodyFrame* body = GetTreeBodyFrame();
if (body) {
body->SetFocused(aFocused);
}
}
already_AddRefed<Element> XULTreeElement::GetTreeBody() {
nsTreeBodyFrame* body = GetTreeBodyFrame();
if (body) {
nsCOMPtr<Element> element;
body->GetTreeBody(getter_AddRefs(element));
return element.forget();
}
return nullptr;
}
already_AddRefed<nsTreeColumns> XULTreeElement::GetColumns(
FlushType aFlushType) {
if (nsTreeBodyFrame* body = GetTreeBodyFrame(aFlushType)) {
return body->Columns();
}
return nullptr;
}
int32_t XULTreeElement::RowHeight() {
nsTreeBodyFrame* body = GetTreeBodyFrame();
if (body) {
return body->RowHeight();
}
return 0;
}
int32_t XULTreeElement::RowWidth() {
nsTreeBodyFrame* body = GetTreeBodyFrame();
if (body) {
return body->RowWidth();
}
return 0;
}
int32_t XULTreeElement::GetFirstVisibleRow() {
nsTreeBodyFrame* body = GetTreeBodyFrame();
if (body) {
return body->FirstVisibleRow();
}
return 0;
}
int32_t XULTreeElement::GetLastVisibleRow() {
nsTreeBodyFrame* body = GetTreeBodyFrame();
if (body) {
return body->LastVisibleRow();
}
return 0;
}
int32_t XULTreeElement::HorizontalPosition() {
nsTreeBodyFrame* body = GetTreeBodyFrame();
if (body) {
return body->GetHorizontalPosition();
}
return 0;
}
int32_t XULTreeElement::GetPageLength() {
nsTreeBodyFrame* body = GetTreeBodyFrame();
if (body) {
return body->PageLength();
}
return 0;
}
void XULTreeElement::EnsureRowIsVisible(int32_t aRow) {
nsTreeBodyFrame* body = GetTreeBodyFrame();
if (body) {
body->EnsureRowIsVisible(aRow);
}
}
void XULTreeElement::EnsureCellIsVisible(int32_t aRow, nsTreeColumn* aCol,
ErrorResult& aRv) {
nsTreeBodyFrame* body = GetTreeBodyFrame();
if (body) {
nsresult rv = body->EnsureCellIsVisible(aRow, aCol);
if (NS_FAILED(rv)) {
aRv.Throw(rv);
}
}
}
void XULTreeElement::ScrollToRow(int32_t aRow) {
nsTreeBodyFrame* body = GetTreeBodyFrame(FlushType::Layout);
if (!body) {
return;
}
body->ScrollToRow(aRow);
}
void XULTreeElement::ScrollByLines(int32_t aNumLines) {
nsTreeBodyFrame* body = GetTreeBodyFrame();
if (!body) {
return;
}
body->ScrollByLines(aNumLines);
}
void XULTreeElement::ScrollByPages(int32_t aNumPages) {
nsTreeBodyFrame* body = GetTreeBodyFrame();
if (body) {
body->ScrollByPages(aNumPages);
}
}
void XULTreeElement::Invalidate() {
nsTreeBodyFrame* body = GetTreeBodyFrame();
if (body) {
body->Invalidate();
}
}
void XULTreeElement::InvalidateColumn(nsTreeColumn* aCol) {
nsTreeBodyFrame* body = GetTreeBodyFrame();
if (body) {
body->InvalidateColumn(aCol);
}
}
void XULTreeElement::InvalidateRow(int32_t aIndex) {
nsTreeBodyFrame* body = GetTreeBodyFrame();
if (body) {
body->InvalidateRow(aIndex);
}
}
void XULTreeElement::InvalidateCell(int32_t aRow, nsTreeColumn* aCol) {
nsTreeBodyFrame* body = GetTreeBodyFrame();
if (body) {
body->InvalidateCell(aRow, aCol);
}
}
void XULTreeElement::InvalidateRange(int32_t aStart, int32_t aEnd) {
nsTreeBodyFrame* body = GetTreeBodyFrame();
if (body) {
body->InvalidateRange(aStart, aEnd);
}
}
int32_t XULTreeElement::GetRowAt(int32_t x, int32_t y) {
nsTreeBodyFrame* body = GetTreeBodyFrame();
if (!body) {
return 0;
}
return body->GetRowAt(x, y);
}
void XULTreeElement::GetCellAt(int32_t aX, int32_t aY, TreeCellInfo& aRetVal,
ErrorResult& aRv) {
aRetVal.mRow = 0;
aRetVal.mCol = nullptr;
nsTreeBodyFrame* body = GetTreeBodyFrame();
if (body) {
nsAutoCString element;
body->GetCellAt(aX, aY, &aRetVal.mRow, getter_AddRefs(aRetVal.mCol),
element);
CopyUTF8toUTF16(element, aRetVal.mChildElt);
}
}
nsIntRect XULTreeElement::GetCoordsForCellItem(int32_t aRow, nsTreeColumn* aCol,
const nsAString& aElement,
nsresult& rv) {
rv = NS_OK;
nsIntRect rect;
nsTreeBodyFrame* body = GetTreeBodyFrame();
NS_ConvertUTF16toUTF8 element(aElement);
if (body) {
rv = body->GetCoordsForCellItem(aRow, aCol, element, &rect.x, &rect.y,
&rect.width, &rect.height);
}
return rect;
}
already_AddRefed<DOMRect> XULTreeElement::GetCoordsForCellItem(
int32_t aRow, nsTreeColumn& aCol, const nsAString& aElement,
ErrorResult& aRv) {
nsresult rv;
nsIntRect rect = GetCoordsForCellItem(aRow, &aCol, aElement, rv);
aRv = rv;
RefPtr<DOMRect> domRect =
new DOMRect(this, rect.x, rect.y, rect.width, rect.height);
return domRect.forget();
}
bool XULTreeElement::IsCellCropped(int32_t aRow, nsTreeColumn* aCol,
ErrorResult& aRv) {
bool cropped = false;
nsTreeBodyFrame* body = GetTreeBodyFrame();
if (body) {
aRv = body->IsCellCropped(aRow, aCol, &cropped);
}
return cropped;
}
void XULTreeElement::RowCountChanged(int32_t aIndex, int32_t aDelta) {
nsTreeBodyFrame* body = GetTreeBodyFrame();
if (body) {
body->RowCountChanged(aIndex, aDelta);
}
}
void XULTreeElement::BeginUpdateBatch() {
nsTreeBodyFrame* body = GetTreeBodyFrame();
if (body) {
body->BeginUpdateBatch();
}
}
void XULTreeElement::EndUpdateBatch() {
nsTreeBodyFrame* body = GetTreeBodyFrame();
if (body) {
body->EndUpdateBatch();
}
}
void XULTreeElement::ClearStyleAndImageCaches() {
nsTreeBodyFrame* body = GetTreeBodyFrame();
if (body) {
body->ClearStyleAndImageCaches();
}
}
void XULTreeElement::RemoveImageCacheEntry(int32_t aRowIndex,
nsTreeColumn& aCol,
ErrorResult& aRv) {
if (NS_WARN_IF(aRowIndex < 0)) {
aRv.Throw(NS_ERROR_INVALID_ARG);
return;
}
nsTreeBodyFrame* body = GetTreeBodyFrame();
if (body) {
body->RemoveImageCacheEntry(aRowIndex, &aCol);
}
}
} // namespace dom
} // namespace mozilla