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gecko-dev/editor/libeditor/nsHTMLEditUtils.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 "nsHTMLEditUtils.h"
#include "mozilla/ArrayUtils.h" // for ArrayLength
#include "mozilla/Assertions.h" // for MOZ_ASSERT, etc
#include "mozilla/dom/Element.h" // for Element, nsINode
#include "nsAString.h" // for nsAString_internal::IsEmpty
#include "nsCOMPtr.h" // for nsCOMPtr, operator==, etc
#include "nsCaseTreatment.h"
#include "nsDebug.h" // for NS_PRECONDITION, etc
#include "nsEditor.h" // for nsEditor
#include "nsError.h" // for NS_SUCCEEDED
#include "nsGkAtoms.h" // for nsGkAtoms, nsGkAtoms::a, etc
#include "nsHTMLTags.h"
#include "nsIAtom.h" // for nsIAtom
#include "nsIDOMHTMLAnchorElement.h" // for nsIDOMHTMLAnchorElement
#include "nsIDOMNode.h" // for nsIDOMNode
#include "nsNameSpaceManager.h" // for kNameSpaceID_None
#include "nsLiteralString.h" // for NS_LITERAL_STRING
#include "nsString.h" // for nsAutoString
#include "nsTextEditUtils.h" // for nsTextEditUtils
using namespace mozilla;
///////////////////////////////////////////////////////////////////////////
// IsInlineStyle true if node is an inline style
//
bool
nsHTMLEditUtils::IsInlineStyle(nsIDOMNode* aNode)
{
NS_PRECONDITION(aNode, "null parent passed to nsHTMLEditUtils::IsInlineStyle");
nsCOMPtr<nsINode> node = do_QueryInterface(aNode);
return node && IsInlineStyle(node);
}
bool
nsHTMLEditUtils::IsInlineStyle(nsINode* aNode)
{
MOZ_ASSERT(aNode);
return aNode->IsAnyOfHTMLElements(nsGkAtoms::b,
nsGkAtoms::i,
nsGkAtoms::u,
nsGkAtoms::tt,
nsGkAtoms::s,
nsGkAtoms::strike,
nsGkAtoms::big,
nsGkAtoms::small,
nsGkAtoms::sub,
nsGkAtoms::sup,
nsGkAtoms::font);
}
///////////////////////////////////////////////////////////////////////////
// IsFormatNode true if node is a format node
//
bool
nsHTMLEditUtils::IsFormatNode(nsIDOMNode* aNode)
{
NS_PRECONDITION(aNode, "null parent passed to nsHTMLEditUtils::IsFormatNode");
nsCOMPtr<nsINode> node = do_QueryInterface(aNode);
return node && IsFormatNode(node);
}
bool
nsHTMLEditUtils::IsFormatNode(nsINode* aNode)
{
MOZ_ASSERT(aNode);
return aNode->IsAnyOfHTMLElements(nsGkAtoms::p,
nsGkAtoms::pre,
nsGkAtoms::h1,
nsGkAtoms::h2,
nsGkAtoms::h3,
nsGkAtoms::h4,
nsGkAtoms::h5,
nsGkAtoms::h6,
nsGkAtoms::address);
}
///////////////////////////////////////////////////////////////////////////
// IsNodeThatCanOutdent true if node is a list, list item, or blockquote
//
bool
nsHTMLEditUtils::IsNodeThatCanOutdent(nsIDOMNode* aNode)
{
NS_PRECONDITION(aNode, "null parent passed to nsHTMLEditUtils::IsNodeThatCanOutdent");
nsCOMPtr<nsIAtom> nodeAtom = nsEditor::GetTag(aNode);
return (nodeAtom == nsGkAtoms::ul)
|| (nodeAtom == nsGkAtoms::ol)
|| (nodeAtom == nsGkAtoms::dl)
|| (nodeAtom == nsGkAtoms::li)
|| (nodeAtom == nsGkAtoms::dd)
|| (nodeAtom == nsGkAtoms::dt)
|| (nodeAtom == nsGkAtoms::blockquote);
}
/********************************************************
* helper methods from nsHTMLEditRules
********************************************************/
///////////////////////////////////////////////////////////////////////////
// IsHeader: true if node an html header
//
bool
nsHTMLEditUtils::IsHeader(nsINode& aNode)
{
return aNode.IsAnyOfHTMLElements(nsGkAtoms::h1,
nsGkAtoms::h2,
nsGkAtoms::h3,
nsGkAtoms::h4,
nsGkAtoms::h5,
nsGkAtoms::h6);
}
bool
nsHTMLEditUtils::IsHeader(nsIDOMNode* aNode)
{
nsCOMPtr<nsINode> node = do_QueryInterface(aNode);
NS_PRECONDITION(node, "null parent passed to nsHTMLEditUtils::IsHeader");
return IsHeader(*node);
}
///////////////////////////////////////////////////////////////////////////
// IsParagraph: true if node an html paragraph
//
bool
nsHTMLEditUtils::IsParagraph(nsIDOMNode* aNode)
{
return nsEditor::NodeIsType(aNode, nsGkAtoms::p);
}
///////////////////////////////////////////////////////////////////////////
// IsHR: true if node an horizontal rule
//
bool
nsHTMLEditUtils::IsHR(nsIDOMNode* aNode)
{
return nsEditor::NodeIsType(aNode, nsGkAtoms::hr);
}
///////////////////////////////////////////////////////////////////////////
// IsListItem: true if node an html list item
//
bool
nsHTMLEditUtils::IsListItem(nsIDOMNode* aNode)
{
NS_PRECONDITION(aNode, "null parent passed to nsHTMLEditUtils::IsListItem");
nsCOMPtr<nsINode> node = do_QueryInterface(aNode);
return node && IsListItem(node);
}
bool
nsHTMLEditUtils::IsListItem(nsINode* aNode)
{
MOZ_ASSERT(aNode);
return aNode->IsAnyOfHTMLElements(nsGkAtoms::li,
nsGkAtoms::dd,
nsGkAtoms::dt);
}
///////////////////////////////////////////////////////////////////////////
// IsTableElement: true if node an html table, td, tr, ...
//
bool
nsHTMLEditUtils::IsTableElement(nsIDOMNode* aNode)
{
NS_PRECONDITION(aNode, "null node passed to nsHTMLEditor::IsTableElement");
nsCOMPtr<nsINode> node = do_QueryInterface(aNode);
return node && IsTableElement(node);
}
bool
nsHTMLEditUtils::IsTableElement(nsINode* aNode)
{
MOZ_ASSERT(aNode);
return aNode->IsAnyOfHTMLElements(nsGkAtoms::table,
nsGkAtoms::tr,
nsGkAtoms::td,
nsGkAtoms::th,
nsGkAtoms::thead,
nsGkAtoms::tfoot,
nsGkAtoms::tbody,
nsGkAtoms::caption);
}
///////////////////////////////////////////////////////////////////////////
// IsTableElementButNotTable: true if node an html td, tr, ... (doesn't include table)
//
bool
nsHTMLEditUtils::IsTableElementButNotTable(nsIDOMNode* aNode)
{
NS_PRECONDITION(aNode, "null node passed to nsHTMLEditor::IsTableElementButNotTable");
nsCOMPtr<nsINode> node = do_QueryInterface(aNode);
return node && IsTableElementButNotTable(node);
}
bool
nsHTMLEditUtils::IsTableElementButNotTable(nsINode* aNode)
{
MOZ_ASSERT(aNode);
return aNode->IsAnyOfHTMLElements(nsGkAtoms::tr,
nsGkAtoms::td,
nsGkAtoms::th,
nsGkAtoms::thead,
nsGkAtoms::tfoot,
nsGkAtoms::tbody,
nsGkAtoms::caption);
}
///////////////////////////////////////////////////////////////////////////
// IsTable: true if node an html table
//
bool
nsHTMLEditUtils::IsTable(nsIDOMNode* aNode)
{
return nsEditor::NodeIsType(aNode, nsGkAtoms::table);
}
bool
nsHTMLEditUtils::IsTable(nsINode* aNode)
{
return aNode && aNode->IsHTMLElement(nsGkAtoms::table);
}
///////////////////////////////////////////////////////////////////////////
// IsTableRow: true if node an html tr
//
bool
nsHTMLEditUtils::IsTableRow(nsIDOMNode* aNode)
{
return nsEditor::NodeIsType(aNode, nsGkAtoms::tr);
}
///////////////////////////////////////////////////////////////////////////
// IsTableCell: true if node an html td or th
//
bool
nsHTMLEditUtils::IsTableCell(nsIDOMNode* aNode)
{
NS_PRECONDITION(aNode, "null parent passed to nsHTMLEditUtils::IsTableCell");
nsCOMPtr<nsINode> node = do_QueryInterface(aNode);
return node && IsTableCell(node);
}
bool
nsHTMLEditUtils::IsTableCell(nsINode* aNode)
{
MOZ_ASSERT(aNode);
return aNode->IsAnyOfHTMLElements(nsGkAtoms::td, nsGkAtoms::th);
}
///////////////////////////////////////////////////////////////////////////
// IsTableCell: true if node an html td or th
//
bool
nsHTMLEditUtils::IsTableCellOrCaption(nsIDOMNode* aNode)
{
NS_PRECONDITION(aNode, "null parent passed to nsHTMLEditUtils::IsTableCell");
nsCOMPtr<nsIAtom> nodeAtom = nsEditor::GetTag(aNode);
return (nodeAtom == nsGkAtoms::td)
|| (nodeAtom == nsGkAtoms::th)
|| (nodeAtom == nsGkAtoms::caption);
}
///////////////////////////////////////////////////////////////////////////
// IsList: true if node an html list
//
bool
nsHTMLEditUtils::IsList(nsIDOMNode* aNode)
{
NS_PRECONDITION(aNode, "null parent passed to nsHTMLEditUtils::IsList");
nsCOMPtr<nsINode> node = do_QueryInterface(aNode);
return node && IsList(node);
}
bool
nsHTMLEditUtils::IsList(nsINode* aNode)
{
MOZ_ASSERT(aNode);
return aNode->IsAnyOfHTMLElements(nsGkAtoms::ul,
nsGkAtoms::ol,
nsGkAtoms::dl);
}
///////////////////////////////////////////////////////////////////////////
// IsOrderedList: true if node an html ordered list
//
bool
nsHTMLEditUtils::IsOrderedList(nsIDOMNode* aNode)
{
return nsEditor::NodeIsType(aNode, nsGkAtoms::ol);
}
///////////////////////////////////////////////////////////////////////////
// IsUnorderedList: true if node an html unordered list
//
bool
nsHTMLEditUtils::IsUnorderedList(nsIDOMNode* aNode)
{
return nsEditor::NodeIsType(aNode, nsGkAtoms::ul);
}
///////////////////////////////////////////////////////////////////////////
// IsBlockquote: true if node an html blockquote node
//
bool
nsHTMLEditUtils::IsBlockquote(nsIDOMNode* aNode)
{
return nsEditor::NodeIsType(aNode, nsGkAtoms::blockquote);
}
///////////////////////////////////////////////////////////////////////////
// IsPre: true if node an html pre node
//
bool
nsHTMLEditUtils::IsPre(nsIDOMNode* aNode)
{
return nsEditor::NodeIsType(aNode, nsGkAtoms::pre);
}
///////////////////////////////////////////////////////////////////////////
// IsImage: true if node an html image node
//
bool
nsHTMLEditUtils::IsImage(nsINode* aNode)
{
return aNode && aNode->IsHTMLElement(nsGkAtoms::img);
}
bool
nsHTMLEditUtils::IsImage(nsIDOMNode* aNode)
{
return nsEditor::NodeIsType(aNode, nsGkAtoms::img);
}
bool
nsHTMLEditUtils::IsLink(nsIDOMNode *aNode)
{
nsCOMPtr<nsINode> node = do_QueryInterface(aNode);
return node && IsLink(node);
}
bool
nsHTMLEditUtils::IsLink(nsINode* aNode)
{
MOZ_ASSERT(aNode);
nsCOMPtr<nsIDOMHTMLAnchorElement> anchor = do_QueryInterface(aNode);
if (anchor)
{
nsAutoString tmpText;
if (NS_SUCCEEDED(anchor->GetHref(tmpText)) && !tmpText.IsEmpty()) {
return true;
}
}
return false;
}
bool
nsHTMLEditUtils::IsNamedAnchor(nsIDOMNode *aNode)
{
nsCOMPtr<nsINode> node = do_QueryInterface(aNode);
return node && IsNamedAnchor(node);
}
bool
nsHTMLEditUtils::IsNamedAnchor(nsINode* aNode)
{
MOZ_ASSERT(aNode);
if (!aNode->IsHTMLElement(nsGkAtoms::a)) {
return false;
}
nsAutoString text;
return aNode->AsElement()->GetAttr(kNameSpaceID_None, nsGkAtoms::name,
text) && !text.IsEmpty();
}
///////////////////////////////////////////////////////////////////////////
// IsDiv: true if node an html div node
//
bool
nsHTMLEditUtils::IsDiv(nsIDOMNode* aNode)
{
return nsEditor::NodeIsType(aNode, nsGkAtoms::div);
}
///////////////////////////////////////////////////////////////////////////
// IsMozDiv: true if node an html div node with type = _moz
//
bool
nsHTMLEditUtils::IsMozDiv(nsIDOMNode* aNode)
{
if (IsDiv(aNode) && nsTextEditUtils::HasMozAttr(aNode)) return true;
return false;
}
bool
nsHTMLEditUtils::IsMozDiv(nsINode* aNode)
{
MOZ_ASSERT(aNode);
return aNode->IsHTMLElement(nsGkAtoms::div) &&
nsTextEditUtils::HasMozAttr(GetAsDOMNode(aNode));
}
///////////////////////////////////////////////////////////////////////////
// IsMailCite: true if node an html blockquote with type=cite
//
bool
nsHTMLEditUtils::IsMailCite(nsIDOMNode* aNode)
{
NS_PRECONDITION(aNode, "null parent passed to nsHTMLEditUtils::IsMailCite");
nsCOMPtr<nsINode> node = do_QueryInterface(aNode);
return node && IsMailCite(node);
}
bool
nsHTMLEditUtils::IsMailCite(nsINode* aNode)
{
MOZ_ASSERT(aNode);
// don't ask me why, but our html mailcites are id'd by "type=cite"...
if (aNode->IsElement() &&
aNode->AsElement()->AttrValueIs(kNameSpaceID_None, nsGkAtoms::type,
NS_LITERAL_STRING("cite"),
eIgnoreCase)) {
return true;
}
// ... but our plaintext mailcites by "_moz_quote=true". go figure.
if (aNode->IsElement() &&
aNode->AsElement()->AttrValueIs(kNameSpaceID_None, nsGkAtoms::mozquote,
NS_LITERAL_STRING("true"),
eIgnoreCase)) {
return true;
}
return false;
}
///////////////////////////////////////////////////////////////////////////
// IsFormWidget: true if node is a form widget of some kind
//
bool
nsHTMLEditUtils::IsFormWidget(nsIDOMNode* aNode)
{
NS_PRECONDITION(aNode, "null node passed to nsHTMLEditUtils::IsFormWidget");
nsCOMPtr<nsINode> node = do_QueryInterface(aNode);
return node && IsFormWidget(node);
}
bool
nsHTMLEditUtils::IsFormWidget(nsINode* aNode)
{
MOZ_ASSERT(aNode);
return aNode->IsAnyOfHTMLElements(nsGkAtoms::textarea,
nsGkAtoms::select,
nsGkAtoms::button,
nsGkAtoms::output,
nsGkAtoms::keygen,
nsGkAtoms::progress,
nsGkAtoms::meter,
nsGkAtoms::input);
}
bool
nsHTMLEditUtils::SupportsAlignAttr(nsIDOMNode* aNode)
{
NS_PRECONDITION(aNode, "null node passed to nsHTMLEditUtils::SupportsAlignAttr");
nsCOMPtr<nsIAtom> nodeAtom = nsEditor::GetTag(aNode);
return (nodeAtom == nsGkAtoms::hr)
|| (nodeAtom == nsGkAtoms::table)
|| (nodeAtom == nsGkAtoms::tbody)
|| (nodeAtom == nsGkAtoms::tfoot)
|| (nodeAtom == nsGkAtoms::thead)
|| (nodeAtom == nsGkAtoms::tr)
|| (nodeAtom == nsGkAtoms::td)
|| (nodeAtom == nsGkAtoms::th)
|| (nodeAtom == nsGkAtoms::div)
|| (nodeAtom == nsGkAtoms::p)
|| (nodeAtom == nsGkAtoms::h1)
|| (nodeAtom == nsGkAtoms::h2)
|| (nodeAtom == nsGkAtoms::h3)
|| (nodeAtom == nsGkAtoms::h4)
|| (nodeAtom == nsGkAtoms::h5)
|| (nodeAtom == nsGkAtoms::h6);
}
// We use bitmasks to test containment of elements. Elements are marked to be
// in certain groups by setting the mGroup member of the nsElementInfo struct
// to the corresponding GROUP_ values (OR'ed together). Similarly, elements are
// marked to allow containment of certain groups by setting the
// mCanContainGroups member of the nsElementInfo struct to the corresponding
// GROUP_ values (OR'ed together).
// Testing containment then simply consists of checking whether the
// mCanContainGroups bitmask of an element and the mGroup bitmask of a
// potential child overlap.
#define GROUP_NONE 0
// body, head, html
#define GROUP_TOPLEVEL (1 << 1)
// base, link, meta, script, style, title
#define GROUP_HEAD_CONTENT (1 << 2)
// b, big, i, s, small, strike, tt, u
#define GROUP_FONTSTYLE (1 << 3)
// abbr, acronym, cite, code, datalist, del, dfn, em, ins, kbd, mark, rb, rp
// rt, rtc, ruby, samp, strong, var
#define GROUP_PHRASE (1 << 4)
// a, applet, basefont, bdo, br, font, iframe, img, map, meter, object, output,
// picture, progress, q, script, span, sub, sup
#define GROUP_SPECIAL (1 << 5)
// button, form, input, label, select, textarea
#define GROUP_FORMCONTROL (1 << 6)
// address, applet, article, aside, blockquote, button, center, del, dir, div,
// dl, fieldset, figure, footer, form, h1, h2, h3, h4, h5, h6, header, hgroup,
// hr, iframe, ins, main, map, menu, nav, noframes, noscript, object, ol, p,
// pre, table, section, ul
#define GROUP_BLOCK (1 << 7)
// frame, frameset
#define GROUP_FRAME (1 << 8)
// col, tbody
#define GROUP_TABLE_CONTENT (1 << 9)
// tr
#define GROUP_TBODY_CONTENT (1 << 10)
// td, th
#define GROUP_TR_CONTENT (1 << 11)
// col
#define GROUP_COLGROUP_CONTENT (1 << 12)
// param
#define GROUP_OBJECT_CONTENT (1 << 13)
// li
#define GROUP_LI (1 << 14)
// area
#define GROUP_MAP_CONTENT (1 << 15)
// optgroup, option
#define GROUP_SELECT_CONTENT (1 << 16)
// option
#define GROUP_OPTIONS (1 << 17)
// dd, dt
#define GROUP_DL_CONTENT (1 << 18)
// p
#define GROUP_P (1 << 19)
// text, whitespace, newline, comment
#define GROUP_LEAF (1 << 20)
// XXX This is because the editor does sublists illegally.
// ol, ul
#define GROUP_OL_UL (1 << 21)
// h1, h2, h3, h4, h5, h6
#define GROUP_HEADING (1 << 22)
// figcaption
#define GROUP_FIGCAPTION (1 << 23)
// picture members (img, source)
#define GROUP_PICTURE_CONTENT (1 << 24)
#define GROUP_INLINE_ELEMENT \
(GROUP_FONTSTYLE | GROUP_PHRASE | GROUP_SPECIAL | GROUP_FORMCONTROL | \
GROUP_LEAF)
#define GROUP_FLOW_ELEMENT (GROUP_INLINE_ELEMENT | GROUP_BLOCK)
struct nsElementInfo
{
#ifdef DEBUG
eHTMLTags mTag;
#endif
uint32_t mGroup;
uint32_t mCanContainGroups;
bool mIsContainer;
bool mCanContainSelf;
};
#ifdef DEBUG
#define ELEM(_tag, _isContainer, _canContainSelf, _group, _canContainGroups) \
{ eHTMLTag_##_tag, _group, _canContainGroups, _isContainer, _canContainSelf }
#else
#define ELEM(_tag, _isContainer, _canContainSelf, _group, _canContainGroups) \
{ _group, _canContainGroups, _isContainer, _canContainSelf }
#endif
static const nsElementInfo kElements[eHTMLTag_userdefined] = {
ELEM(a, true, false, GROUP_SPECIAL, GROUP_INLINE_ELEMENT),
ELEM(abbr, true, true, GROUP_PHRASE, GROUP_INLINE_ELEMENT),
ELEM(acronym, true, true, GROUP_PHRASE, GROUP_INLINE_ELEMENT),
ELEM(address, true, true, GROUP_BLOCK,
GROUP_INLINE_ELEMENT | GROUP_P),
ELEM(applet, true, true, GROUP_SPECIAL | GROUP_BLOCK,
GROUP_FLOW_ELEMENT | GROUP_OBJECT_CONTENT),
ELEM(area, false, false, GROUP_MAP_CONTENT, GROUP_NONE),
ELEM(article, true, true, GROUP_BLOCK, GROUP_FLOW_ELEMENT),
ELEM(aside, true, true, GROUP_BLOCK, GROUP_FLOW_ELEMENT),
ELEM(audio, false, false, GROUP_NONE, GROUP_NONE),
ELEM(b, true, true, GROUP_FONTSTYLE, GROUP_INLINE_ELEMENT),
ELEM(base, false, false, GROUP_HEAD_CONTENT, GROUP_NONE),
ELEM(basefont, false, false, GROUP_SPECIAL, GROUP_NONE),
ELEM(bdo, true, true, GROUP_SPECIAL, GROUP_INLINE_ELEMENT),
ELEM(bgsound, false, false, GROUP_NONE, GROUP_NONE),
ELEM(big, true, true, GROUP_FONTSTYLE, GROUP_INLINE_ELEMENT),
ELEM(blockquote, true, true, GROUP_BLOCK, GROUP_FLOW_ELEMENT),
ELEM(body, true, true, GROUP_TOPLEVEL, GROUP_FLOW_ELEMENT),
ELEM(br, false, false, GROUP_SPECIAL, GROUP_NONE),
ELEM(button, true, true, GROUP_FORMCONTROL | GROUP_BLOCK,
GROUP_FLOW_ELEMENT),
ELEM(canvas, false, false, GROUP_NONE, GROUP_NONE),
ELEM(caption, true, true, GROUP_NONE, GROUP_INLINE_ELEMENT),
ELEM(center, true, true, GROUP_BLOCK, GROUP_FLOW_ELEMENT),
ELEM(cite, true, true, GROUP_PHRASE, GROUP_INLINE_ELEMENT),
ELEM(code, true, true, GROUP_PHRASE, GROUP_INLINE_ELEMENT),
ELEM(col, false, false, GROUP_TABLE_CONTENT | GROUP_COLGROUP_CONTENT,
GROUP_NONE),
ELEM(colgroup, true, false, GROUP_NONE, GROUP_COLGROUP_CONTENT),
ELEM(content, true, false, GROUP_NONE, GROUP_INLINE_ELEMENT),
ELEM(data, true, false, GROUP_PHRASE, GROUP_INLINE_ELEMENT),
ELEM(datalist, true, false, GROUP_PHRASE,
GROUP_OPTIONS | GROUP_INLINE_ELEMENT),
ELEM(dd, true, false, GROUP_DL_CONTENT, GROUP_FLOW_ELEMENT),
ELEM(del, true, true, GROUP_PHRASE | GROUP_BLOCK, GROUP_FLOW_ELEMENT),
ELEM(dfn, true, true, GROUP_PHRASE, GROUP_INLINE_ELEMENT),
ELEM(dir, true, false, GROUP_BLOCK, GROUP_LI),
ELEM(div, true, true, GROUP_BLOCK, GROUP_FLOW_ELEMENT),
ELEM(dl, true, false, GROUP_BLOCK, GROUP_DL_CONTENT),
ELEM(dt, true, true, GROUP_DL_CONTENT, GROUP_INLINE_ELEMENT),
ELEM(em, true, true, GROUP_PHRASE, GROUP_INLINE_ELEMENT),
ELEM(embed, false, false, GROUP_NONE, GROUP_NONE),
ELEM(fieldset, true, true, GROUP_BLOCK, GROUP_FLOW_ELEMENT),
ELEM(figcaption, true, false, GROUP_FIGCAPTION, GROUP_FLOW_ELEMENT),
ELEM(figure, true, true, GROUP_BLOCK,
GROUP_FLOW_ELEMENT | GROUP_FIGCAPTION),
ELEM(font, true, true, GROUP_SPECIAL, GROUP_INLINE_ELEMENT),
ELEM(footer, true, true, GROUP_BLOCK, GROUP_FLOW_ELEMENT),
ELEM(form, true, true, GROUP_BLOCK, GROUP_FLOW_ELEMENT),
ELEM(frame, false, false, GROUP_FRAME, GROUP_NONE),
ELEM(frameset, true, true, GROUP_FRAME, GROUP_FRAME),
ELEM(h1, true, false, GROUP_BLOCK | GROUP_HEADING,
GROUP_INLINE_ELEMENT),
ELEM(h2, true, false, GROUP_BLOCK | GROUP_HEADING,
GROUP_INLINE_ELEMENT),
ELEM(h3, true, false, GROUP_BLOCK | GROUP_HEADING,
GROUP_INLINE_ELEMENT),
ELEM(h4, true, false, GROUP_BLOCK | GROUP_HEADING,
GROUP_INLINE_ELEMENT),
ELEM(h5, true, false, GROUP_BLOCK | GROUP_HEADING,
GROUP_INLINE_ELEMENT),
ELEM(h6, true, false, GROUP_BLOCK | GROUP_HEADING,
GROUP_INLINE_ELEMENT),
ELEM(head, true, false, GROUP_TOPLEVEL, GROUP_HEAD_CONTENT),
ELEM(header, true, true, GROUP_BLOCK, GROUP_FLOW_ELEMENT),
ELEM(hgroup, true, false, GROUP_BLOCK, GROUP_HEADING),
ELEM(hr, false, false, GROUP_BLOCK, GROUP_NONE),
ELEM(html, true, false, GROUP_TOPLEVEL, GROUP_TOPLEVEL),
ELEM(i, true, true, GROUP_FONTSTYLE, GROUP_INLINE_ELEMENT),
ELEM(iframe, true, true, GROUP_SPECIAL | GROUP_BLOCK,
GROUP_FLOW_ELEMENT),
ELEM(image, false, false, GROUP_NONE, GROUP_NONE),
ELEM(img, false, false, GROUP_SPECIAL | GROUP_PICTURE_CONTENT, GROUP_NONE),
ELEM(input, false, false, GROUP_FORMCONTROL, GROUP_NONE),
ELEM(ins, true, true, GROUP_PHRASE | GROUP_BLOCK, GROUP_FLOW_ELEMENT),
ELEM(kbd, true, true, GROUP_PHRASE, GROUP_INLINE_ELEMENT),
ELEM(keygen, false, false, GROUP_FORMCONTROL, GROUP_NONE),
ELEM(label, true, false, GROUP_FORMCONTROL, GROUP_INLINE_ELEMENT),
ELEM(legend, true, true, GROUP_NONE, GROUP_INLINE_ELEMENT),
ELEM(li, true, false, GROUP_LI, GROUP_FLOW_ELEMENT),
ELEM(link, false, false, GROUP_HEAD_CONTENT, GROUP_NONE),
ELEM(listing, false, false, GROUP_NONE, GROUP_NONE),
ELEM(main, true, true, GROUP_BLOCK, GROUP_FLOW_ELEMENT),
ELEM(map, true, true, GROUP_SPECIAL, GROUP_BLOCK | GROUP_MAP_CONTENT),
ELEM(mark, true, true, GROUP_PHRASE, GROUP_INLINE_ELEMENT),
ELEM(marquee, false, false, GROUP_NONE, GROUP_NONE),
ELEM(menu, true, true, GROUP_BLOCK, GROUP_LI | GROUP_FLOW_ELEMENT),
ELEM(menuitem, false, false, GROUP_NONE, GROUP_NONE),
ELEM(meta, false, false, GROUP_HEAD_CONTENT, GROUP_NONE),
ELEM(meter, true, false, GROUP_SPECIAL, GROUP_FLOW_ELEMENT),
ELEM(multicol, false, false, GROUP_NONE, GROUP_NONE),
ELEM(nav, true, true, GROUP_BLOCK, GROUP_FLOW_ELEMENT),
ELEM(nobr, false, false, GROUP_NONE, GROUP_NONE),
ELEM(noembed, false, false, GROUP_NONE, GROUP_NONE),
ELEM(noframes, true, true, GROUP_BLOCK, GROUP_FLOW_ELEMENT),
ELEM(noscript, true, true, GROUP_BLOCK, GROUP_FLOW_ELEMENT),
ELEM(object, true, true, GROUP_SPECIAL | GROUP_BLOCK,
GROUP_FLOW_ELEMENT | GROUP_OBJECT_CONTENT),
// XXX Can contain self and ul because editor does sublists illegally.
ELEM(ol, true, true, GROUP_BLOCK | GROUP_OL_UL,
GROUP_LI | GROUP_OL_UL),
ELEM(optgroup, true, false, GROUP_SELECT_CONTENT,
GROUP_OPTIONS),
ELEM(option, true, false,
GROUP_SELECT_CONTENT | GROUP_OPTIONS, GROUP_LEAF),
ELEM(output, true, true, GROUP_SPECIAL, GROUP_INLINE_ELEMENT),
ELEM(p, true, false, GROUP_BLOCK | GROUP_P, GROUP_INLINE_ELEMENT),
ELEM(param, false, false, GROUP_OBJECT_CONTENT, GROUP_NONE),
ELEM(picture, true, false, GROUP_SPECIAL, GROUP_PICTURE_CONTENT),
ELEM(plaintext, false, false, GROUP_NONE, GROUP_NONE),
ELEM(pre, true, true, GROUP_BLOCK, GROUP_INLINE_ELEMENT),
ELEM(progress, true, false, GROUP_SPECIAL, GROUP_FLOW_ELEMENT),
ELEM(q, true, true, GROUP_SPECIAL, GROUP_INLINE_ELEMENT),
ELEM(rb, true, true, GROUP_PHRASE, GROUP_INLINE_ELEMENT),
ELEM(rp, true, true, GROUP_PHRASE, GROUP_INLINE_ELEMENT),
ELEM(rt, true, true, GROUP_PHRASE, GROUP_INLINE_ELEMENT),
ELEM(rtc, true, true, GROUP_PHRASE, GROUP_INLINE_ELEMENT),
ELEM(ruby, true, true, GROUP_PHRASE, GROUP_INLINE_ELEMENT),
ELEM(s, true, true, GROUP_FONTSTYLE, GROUP_INLINE_ELEMENT),
ELEM(samp, true, true, GROUP_PHRASE, GROUP_INLINE_ELEMENT),
ELEM(script, true, false, GROUP_HEAD_CONTENT | GROUP_SPECIAL,
GROUP_LEAF),
ELEM(section, true, true, GROUP_BLOCK, GROUP_FLOW_ELEMENT),
ELEM(select, true, false, GROUP_FORMCONTROL, GROUP_SELECT_CONTENT),
ELEM(shadow, true, false, GROUP_NONE, GROUP_INLINE_ELEMENT),
ELEM(small, true, true, GROUP_FONTSTYLE, GROUP_INLINE_ELEMENT),
ELEM(source, false, false, GROUP_PICTURE_CONTENT, GROUP_NONE),
ELEM(span, true, true, GROUP_SPECIAL, GROUP_INLINE_ELEMENT),
ELEM(strike, true, true, GROUP_FONTSTYLE, GROUP_INLINE_ELEMENT),
ELEM(strong, true, true, GROUP_PHRASE, GROUP_INLINE_ELEMENT),
ELEM(style, true, false, GROUP_HEAD_CONTENT, GROUP_LEAF),
ELEM(sub, true, true, GROUP_SPECIAL, GROUP_INLINE_ELEMENT),
ELEM(sup, true, true, GROUP_SPECIAL, GROUP_INLINE_ELEMENT),
ELEM(table, true, false, GROUP_BLOCK, GROUP_TABLE_CONTENT),
ELEM(tbody, true, false, GROUP_TABLE_CONTENT, GROUP_TBODY_CONTENT),
ELEM(td, true, false, GROUP_TR_CONTENT, GROUP_FLOW_ELEMENT),
ELEM(textarea, true, false, GROUP_FORMCONTROL, GROUP_LEAF),
ELEM(tfoot, true, false, GROUP_NONE, GROUP_TBODY_CONTENT),
ELEM(th, true, false, GROUP_TR_CONTENT, GROUP_FLOW_ELEMENT),
ELEM(thead, true, false, GROUP_NONE, GROUP_TBODY_CONTENT),
ELEM(template, false, false, GROUP_NONE, GROUP_NONE),
ELEM(time, true, false, GROUP_PHRASE, GROUP_INLINE_ELEMENT),
ELEM(title, true, false, GROUP_HEAD_CONTENT, GROUP_LEAF),
ELEM(tr, true, false, GROUP_TBODY_CONTENT, GROUP_TR_CONTENT),
ELEM(track, false, false, GROUP_NONE, GROUP_NONE),
ELEM(tt, true, true, GROUP_FONTSTYLE, GROUP_INLINE_ELEMENT),
ELEM(u, true, true, GROUP_FONTSTYLE, GROUP_INLINE_ELEMENT),
// XXX Can contain self and ol because editor does sublists illegally.
ELEM(ul, true, true, GROUP_BLOCK | GROUP_OL_UL,
GROUP_LI | GROUP_OL_UL),
ELEM(var, true, true, GROUP_PHRASE, GROUP_INLINE_ELEMENT),
ELEM(video, false, false, GROUP_NONE, GROUP_NONE),
ELEM(wbr, false, false, GROUP_NONE, GROUP_NONE),
ELEM(xmp, false, false, GROUP_NONE, GROUP_NONE),
// These aren't elements.
ELEM(text, false, false, GROUP_LEAF, GROUP_NONE),
ELEM(whitespace, false, false, GROUP_LEAF, GROUP_NONE),
ELEM(newline, false, false, GROUP_LEAF, GROUP_NONE),
ELEM(comment, false, false, GROUP_LEAF, GROUP_NONE),
ELEM(entity, false, false, GROUP_NONE, GROUP_NONE),
ELEM(doctypeDecl, false, false, GROUP_NONE, GROUP_NONE),
ELEM(markupDecl, false, false, GROUP_NONE, GROUP_NONE),
ELEM(instruction, false, false, GROUP_NONE, GROUP_NONE),
ELEM(userdefined, true, false, GROUP_NONE, GROUP_FLOW_ELEMENT)
};
bool
nsHTMLEditUtils::CanContain(int32_t aParent, int32_t aChild)
{
NS_ASSERTION(aParent > eHTMLTag_unknown && aParent <= eHTMLTag_userdefined,
"aParent out of range!");
NS_ASSERTION(aChild > eHTMLTag_unknown && aChild <= eHTMLTag_userdefined,
"aChild out of range!");
#ifdef DEBUG
static bool checked = false;
if (!checked) {
checked = true;
int32_t i;
for (i = 1; i <= eHTMLTag_userdefined; ++i) {
NS_ASSERTION(kElements[i - 1].mTag == i,
"You need to update kElements (missing tags).");
}
}
#endif
// Special-case button.
if (aParent == eHTMLTag_button) {
static const eHTMLTags kButtonExcludeKids[] = {
eHTMLTag_a,
eHTMLTag_fieldset,
eHTMLTag_form,
eHTMLTag_iframe,
eHTMLTag_input,
eHTMLTag_select,
eHTMLTag_textarea
};
uint32_t j;
for (j = 0; j < ArrayLength(kButtonExcludeKids); ++j) {
if (kButtonExcludeKids[j] == aChild) {
return false;
}
}
}
// Deprecated elements.
if (aChild == eHTMLTag_bgsound) {
return false;
}
// Bug #67007, dont strip userdefined tags.
if (aChild == eHTMLTag_userdefined) {
return true;
}
const nsElementInfo& parent = kElements[aParent - 1];
if (aParent == aChild) {
return parent.mCanContainSelf;
}
const nsElementInfo& child = kElements[aChild - 1];
return (parent.mCanContainGroups & child.mGroup) != 0;
}
bool
nsHTMLEditUtils::IsContainer(int32_t aTag)
{
NS_ASSERTION(aTag > eHTMLTag_unknown && aTag <= eHTMLTag_userdefined,
"aTag out of range!");
return kElements[aTag - 1].mIsContainer;
}
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