зеркало из https://github.com/mozilla/gecko-dev.git
414 строки
10 KiB
C++
414 строки
10 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "nsCOMPtr.h"
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#include "nsTreeContentView.h"
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#include "nsITreeSelection.h"
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#include "ChildIterator.h"
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#include "nsError.h"
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#include "nsTreeBodyFrame.h"
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#include "mozilla/dom/DOMRect.h"
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#include "mozilla/dom/BindingUtils.h"
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#include "mozilla/dom/Element.h"
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#include "mozilla/dom/ToJSValue.h"
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#include "mozilla/dom/XULTreeElement.h"
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#include "mozilla/dom/XULTreeElementBinding.h"
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namespace mozilla {
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namespace dom {
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NS_IMPL_ISUPPORTS_CYCLE_COLLECTION_INHERITED_0(XULTreeElement, nsXULElement)
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NS_IMPL_CYCLE_COLLECTION_INHERITED(XULTreeElement, nsXULElement, mView)
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JSObject* XULTreeElement::WrapNode(JSContext* aCx,
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JS::Handle<JSObject*> aGivenProto) {
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return XULTreeElement_Binding::Wrap(aCx, this, aGivenProto);
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}
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void XULTreeElement::UnbindFromTree(bool aNullParent) {
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// Drop the view's ref to us.
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if (mView) {
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nsCOMPtr<nsITreeSelection> sel;
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mView->GetSelection(getter_AddRefs(sel));
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if (sel) {
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sel->SetTree(nullptr);
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}
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mView->SetTree(nullptr); // Break the circular ref between the view and us.
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}
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mView = nullptr;
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nsXULElement::UnbindFromTree(aNullParent);
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}
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void XULTreeElement::DestroyContent() {
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// Drop the view's ref to us.
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if (mView) {
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nsCOMPtr<nsITreeSelection> sel;
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mView->GetSelection(getter_AddRefs(sel));
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if (sel) {
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sel->SetTree(nullptr);
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}
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mView->SetTree(nullptr); // Break the circular ref between the view and us.
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}
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mView = nullptr;
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nsXULElement::DestroyContent();
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}
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static nsIContent* FindBodyElement(nsIContent* aParent) {
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mozilla::dom::FlattenedChildIterator iter(aParent);
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for (nsIContent* content = iter.GetNextChild(); content;
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content = iter.GetNextChild()) {
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mozilla::dom::NodeInfo* ni = content->NodeInfo();
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if (ni->Equals(nsGkAtoms::treechildren, kNameSpaceID_XUL)) {
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return content;
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} else if (ni->Equals(nsGkAtoms::tree, kNameSpaceID_XUL)) {
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// There are nesting tree elements. Only the innermost should
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// find the treechilren.
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return nullptr;
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} else if (content->IsElement() &&
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!ni->Equals(nsGkAtoms::_template, kNameSpaceID_XUL)) {
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nsIContent* result = FindBodyElement(content);
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if (result) return result;
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}
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}
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return nullptr;
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}
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nsTreeBodyFrame* XULTreeElement::GetTreeBodyFrame(FlushType aFlushType) {
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MOZ_ASSERT(aFlushType == FlushType::Frames ||
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aFlushType == FlushType::Layout || aFlushType == FlushType::None);
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nsCOMPtr<nsIContent> kungFuDeathGrip = this; // keep a reference
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// Make sure our frames are up to date, and layout as needed. We
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// have to do this before checking for our cached mTreeBody, since
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// it might go away on style flush, and in any case if aFlushLayout
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// is true we need to make sure to flush no matter what.
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if (aFlushType != FlushType::None) {
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if (RefPtr<Document> doc = GetComposedDoc()) {
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doc->FlushPendingNotifications(aFlushType);
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}
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}
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if (mTreeBody) {
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// Have one cached already.
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return mTreeBody;
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}
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if (nsCOMPtr<nsIContent> tree = FindBodyElement(this)) {
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mTreeBody = do_QueryFrame(tree->GetPrimaryFrame());
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}
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return mTreeBody;
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}
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already_AddRefed<nsITreeView> XULTreeElement::GetView() {
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if (!mTreeBody) {
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if (!GetTreeBodyFrame()) {
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return nullptr;
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}
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if (mView) {
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nsCOMPtr<nsITreeView> view;
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// Our new frame needs to initialise itself
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mTreeBody->GetView(getter_AddRefs(view));
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return view.forget();
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}
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}
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if (!mView) {
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// No tree builder, create a tree content view.
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if (NS_FAILED(NS_NewTreeContentView(getter_AddRefs(mView)))) {
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return nullptr;
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}
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// Initialise the frame and view
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mTreeBody->SetView(mView);
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}
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return do_AddRef(mView);
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}
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void XULTreeElement::SetView(nsITreeView* aView, CallerType aCallerType,
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ErrorResult& aRv) {
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if (aCallerType != CallerType::System) {
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// Don't trust views coming from random places.
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aRv.Throw(NS_ERROR_DOM_SECURITY_ERR);
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return;
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}
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mView = aView;
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nsTreeBodyFrame* body = GetTreeBodyFrame();
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if (body) {
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body->SetView(aView);
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}
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}
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bool XULTreeElement::Focused() {
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nsTreeBodyFrame* body = GetTreeBodyFrame();
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if (body) {
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return body->GetFocused();
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}
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return false;
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}
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void XULTreeElement::SetFocused(bool aFocused) {
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nsTreeBodyFrame* body = GetTreeBodyFrame();
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if (body) {
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body->SetFocused(aFocused);
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}
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}
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already_AddRefed<Element> XULTreeElement::GetTreeBody() {
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nsTreeBodyFrame* body = GetTreeBodyFrame();
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if (body) {
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nsCOMPtr<Element> element;
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body->GetTreeBody(getter_AddRefs(element));
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return element.forget();
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}
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return nullptr;
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}
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already_AddRefed<nsTreeColumns> XULTreeElement::GetColumns(
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FlushType aFlushType) {
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if (nsTreeBodyFrame* body = GetTreeBodyFrame(aFlushType)) {
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return body->Columns();
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}
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return nullptr;
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}
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int32_t XULTreeElement::RowHeight() {
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nsTreeBodyFrame* body = GetTreeBodyFrame();
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if (body) {
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return body->RowHeight();
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}
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return 0;
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}
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int32_t XULTreeElement::RowWidth() {
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nsTreeBodyFrame* body = GetTreeBodyFrame();
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if (body) {
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return body->RowWidth();
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}
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return 0;
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}
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int32_t XULTreeElement::GetFirstVisibleRow() {
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nsTreeBodyFrame* body = GetTreeBodyFrame();
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if (body) {
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return body->FirstVisibleRow();
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}
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return 0;
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}
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int32_t XULTreeElement::GetLastVisibleRow() {
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nsTreeBodyFrame* body = GetTreeBodyFrame();
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if (body) {
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return body->LastVisibleRow();
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}
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return 0;
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}
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int32_t XULTreeElement::HorizontalPosition() {
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nsTreeBodyFrame* body = GetTreeBodyFrame();
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if (body) {
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return body->GetHorizontalPosition();
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}
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return 0;
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}
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int32_t XULTreeElement::GetPageLength() {
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nsTreeBodyFrame* body = GetTreeBodyFrame();
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if (body) {
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return body->PageLength();
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}
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return 0;
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}
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void XULTreeElement::EnsureRowIsVisible(int32_t aRow) {
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nsTreeBodyFrame* body = GetTreeBodyFrame();
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if (body) {
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body->EnsureRowIsVisible(aRow);
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}
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}
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void XULTreeElement::EnsureCellIsVisible(int32_t aRow, nsTreeColumn* aCol,
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ErrorResult& aRv) {
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nsTreeBodyFrame* body = GetTreeBodyFrame();
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if (body) {
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nsresult rv = body->EnsureCellIsVisible(aRow, aCol);
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if (NS_FAILED(rv)) {
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aRv.Throw(rv);
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}
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}
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}
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void XULTreeElement::ScrollToRow(int32_t aRow) {
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nsTreeBodyFrame* body = GetTreeBodyFrame(FlushType::Layout);
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if (!body) {
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return;
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}
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body->ScrollToRow(aRow);
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}
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void XULTreeElement::ScrollByLines(int32_t aNumLines) {
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nsTreeBodyFrame* body = GetTreeBodyFrame();
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if (!body) {
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return;
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}
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body->ScrollByLines(aNumLines);
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}
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void XULTreeElement::ScrollByPages(int32_t aNumPages) {
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nsTreeBodyFrame* body = GetTreeBodyFrame();
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if (body) {
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body->ScrollByPages(aNumPages);
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}
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}
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void XULTreeElement::Invalidate() {
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nsTreeBodyFrame* body = GetTreeBodyFrame();
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if (body) {
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body->Invalidate();
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}
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}
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void XULTreeElement::InvalidateColumn(nsTreeColumn* aCol) {
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nsTreeBodyFrame* body = GetTreeBodyFrame();
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if (body) {
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body->InvalidateColumn(aCol);
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}
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}
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void XULTreeElement::InvalidateRow(int32_t aIndex) {
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nsTreeBodyFrame* body = GetTreeBodyFrame();
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if (body) {
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body->InvalidateRow(aIndex);
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}
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}
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void XULTreeElement::InvalidateCell(int32_t aRow, nsTreeColumn* aCol) {
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nsTreeBodyFrame* body = GetTreeBodyFrame();
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if (body) {
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body->InvalidateCell(aRow, aCol);
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}
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}
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void XULTreeElement::InvalidateRange(int32_t aStart, int32_t aEnd) {
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nsTreeBodyFrame* body = GetTreeBodyFrame();
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if (body) {
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body->InvalidateRange(aStart, aEnd);
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}
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}
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int32_t XULTreeElement::GetRowAt(int32_t x, int32_t y) {
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nsTreeBodyFrame* body = GetTreeBodyFrame();
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if (!body) {
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return 0;
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}
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return body->GetRowAt(x, y);
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}
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void XULTreeElement::GetCellAt(int32_t aX, int32_t aY, TreeCellInfo& aRetVal,
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ErrorResult& aRv) {
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aRetVal.mRow = 0;
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aRetVal.mCol = nullptr;
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nsTreeBodyFrame* body = GetTreeBodyFrame();
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if (body) {
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nsAutoCString element;
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body->GetCellAt(aX, aY, &aRetVal.mRow, getter_AddRefs(aRetVal.mCol),
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element);
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CopyUTF8toUTF16(element, aRetVal.mChildElt);
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}
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}
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nsIntRect XULTreeElement::GetCoordsForCellItem(int32_t aRow, nsTreeColumn* aCol,
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const nsAString& aElement,
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nsresult& rv) {
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rv = NS_OK;
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nsIntRect rect;
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nsTreeBodyFrame* body = GetTreeBodyFrame();
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NS_ConvertUTF16toUTF8 element(aElement);
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if (body) {
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rv = body->GetCoordsForCellItem(aRow, aCol, element, &rect.x, &rect.y,
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&rect.width, &rect.height);
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}
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return rect;
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}
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already_AddRefed<DOMRect> XULTreeElement::GetCoordsForCellItem(
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int32_t aRow, nsTreeColumn& aCol, const nsAString& aElement,
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ErrorResult& aRv) {
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nsresult rv;
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nsIntRect rect = GetCoordsForCellItem(aRow, &aCol, aElement, rv);
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aRv = rv;
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RefPtr<DOMRect> domRect =
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new DOMRect(this, rect.x, rect.y, rect.width, rect.height);
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return domRect.forget();
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}
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bool XULTreeElement::IsCellCropped(int32_t aRow, nsTreeColumn* aCol,
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ErrorResult& aRv) {
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bool cropped = false;
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nsTreeBodyFrame* body = GetTreeBodyFrame();
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if (body) {
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aRv = body->IsCellCropped(aRow, aCol, &cropped);
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}
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return cropped;
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}
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void XULTreeElement::RowCountChanged(int32_t aIndex, int32_t aDelta) {
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nsTreeBodyFrame* body = GetTreeBodyFrame();
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if (body) {
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body->RowCountChanged(aIndex, aDelta);
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}
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}
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void XULTreeElement::BeginUpdateBatch() {
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nsTreeBodyFrame* body = GetTreeBodyFrame();
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if (body) {
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body->BeginUpdateBatch();
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}
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}
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void XULTreeElement::EndUpdateBatch() {
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nsTreeBodyFrame* body = GetTreeBodyFrame();
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if (body) {
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body->EndUpdateBatch();
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}
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}
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void XULTreeElement::ClearStyleAndImageCaches() {
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nsTreeBodyFrame* body = GetTreeBodyFrame();
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if (body) {
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body->ClearStyleAndImageCaches();
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}
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}
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void XULTreeElement::RemoveImageCacheEntry(int32_t aRowIndex,
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nsTreeColumn& aCol,
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ErrorResult& aRv) {
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if (NS_WARN_IF(aRowIndex < 0)) {
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aRv.Throw(NS_ERROR_INVALID_ARG);
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return;
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}
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nsTreeBodyFrame* body = GetTreeBodyFrame();
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if (body) {
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body->RemoveImageCacheEntry(aRowIndex, &aCol);
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}
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}
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} // namespace dom
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} // namespace mozilla
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