pjs/editor/libeditor/html/nsHTMLEditUtils.cpp

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either of the GNU General Public License Version 2 or later (the "GPL"),
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include "nsHTMLEditUtils.h"
#include "nsTextEditUtils.h"
#include "nsString.h"
#include "nsUnicharUtils.h"
#include "nsEditor.h"
#include "nsEditProperty.h"
#include "nsIAtom.h"
#include "nsIDOMNode.h"
#include "nsIContent.h"
#include "nsIDOMNodeList.h"
#include "nsIDOMHTMLAnchorElement.h"
#include "nsHTMLTags.h"
///////////////////////////////////////////////////////////////////////////
//
PRBool
nsHTMLEditUtils::IsBig(nsIDOMNode *node)
{
return nsEditor::NodeIsType(node, nsEditProperty::big);
}
///////////////////////////////////////////////////////////////////////////
// IsInlineStyle true if node is an inline style
//
PRBool
nsHTMLEditUtils::IsInlineStyle(nsIDOMNode *node)
{
NS_PRECONDITION(node, "null parent passed to nsHTMLEditUtils::IsInlineStyle");
nsCOMPtr<nsIAtom> nodeAtom = nsEditor::GetTag(node);
return (nodeAtom == nsEditProperty::b)
|| (nodeAtom == nsEditProperty::i)
|| (nodeAtom == nsEditProperty::u)
|| (nodeAtom == nsEditProperty::tt)
|| (nodeAtom == nsEditProperty::s)
|| (nodeAtom == nsEditProperty::strike)
|| (nodeAtom == nsEditProperty::big)
|| (nodeAtom == nsEditProperty::small)
|| (nodeAtom == nsEditProperty::blink)
|| (nodeAtom == nsEditProperty::sub)
|| (nodeAtom == nsEditProperty::sup)
|| (nodeAtom == nsEditProperty::font);
}
///////////////////////////////////////////////////////////////////////////
// IsFormatNode true if node is a format node
//
PRBool
nsHTMLEditUtils::IsFormatNode(nsIDOMNode *node)
{
NS_PRECONDITION(node, "null parent passed to nsHTMLEditUtils::IsFormatNode");
nsCOMPtr<nsIAtom> nodeAtom = nsEditor::GetTag(node);
return (nodeAtom == nsEditProperty::p)
|| (nodeAtom == nsEditProperty::pre)
|| (nodeAtom == nsEditProperty::h1)
|| (nodeAtom == nsEditProperty::h2)
|| (nodeAtom == nsEditProperty::h3)
|| (nodeAtom == nsEditProperty::h4)
|| (nodeAtom == nsEditProperty::h5)
|| (nodeAtom == nsEditProperty::h6)
|| (nodeAtom == nsEditProperty::address);
}
///////////////////////////////////////////////////////////////////////////
// IsNodeThatCanOutdent true if node is a list, list item, or blockquote
//
PRBool
nsHTMLEditUtils::IsNodeThatCanOutdent(nsIDOMNode *node)
{
NS_PRECONDITION(node, "null parent passed to nsHTMLEditUtils::IsNodeThatCanOutdent");
nsCOMPtr<nsIAtom> nodeAtom = nsEditor::GetTag(node);
return (nodeAtom == nsEditProperty::ul)
|| (nodeAtom == nsEditProperty::ol)
|| (nodeAtom == nsEditProperty::dl)
|| (nodeAtom == nsEditProperty::li)
|| (nodeAtom == nsEditProperty::dd)
|| (nodeAtom == nsEditProperty::dt)
|| (nodeAtom == nsEditProperty::blockquote);
}
///////////////////////////////////////////////////////////////////////////
//
PRBool
nsHTMLEditUtils::IsSmall(nsIDOMNode *node)
{
return nsEditor::NodeIsType(node, nsEditProperty::small);
}
/********************************************************
* helper methods from nsHTMLEditRules
********************************************************/
///////////////////////////////////////////////////////////////////////////
// IsHeader: true if node an html header
//
PRBool
nsHTMLEditUtils::IsHeader(nsIDOMNode *node)
{
NS_PRECONDITION(node, "null parent passed to nsHTMLEditUtils::IsHeader");
nsCOMPtr<nsIAtom> nodeAtom = nsEditor::GetTag(node);
return (nodeAtom == nsEditProperty::h1)
|| (nodeAtom == nsEditProperty::h2)
|| (nodeAtom == nsEditProperty::h3)
|| (nodeAtom == nsEditProperty::h4)
|| (nodeAtom == nsEditProperty::h5)
|| (nodeAtom == nsEditProperty::h6);
}
///////////////////////////////////////////////////////////////////////////
// IsParagraph: true if node an html paragraph
//
PRBool
nsHTMLEditUtils::IsParagraph(nsIDOMNode *node)
{
return nsEditor::NodeIsType(node, nsEditProperty::p);
}
///////////////////////////////////////////////////////////////////////////
// IsHR: true if node an horizontal rule
//
PRBool
nsHTMLEditUtils::IsHR(nsIDOMNode *node)
{
return nsEditor::NodeIsType(node, nsEditProperty::hr);
}
///////////////////////////////////////////////////////////////////////////
// IsListItem: true if node an html list item
//
PRBool
nsHTMLEditUtils::IsListItem(nsIDOMNode *node)
{
NS_PRECONDITION(node, "null parent passed to nsHTMLEditUtils::IsListItem");
nsCOMPtr<nsIAtom> nodeAtom = nsEditor::GetTag(node);
return (nodeAtom == nsEditProperty::li)
|| (nodeAtom == nsEditProperty::dd)
|| (nodeAtom == nsEditProperty::dt);
}
///////////////////////////////////////////////////////////////////////////
// IsTableElement: true if node an html table, td, tr, ...
//
PRBool
nsHTMLEditUtils::IsTableElement(nsIDOMNode *node)
{
NS_PRECONDITION(node, "null node passed to nsHTMLEditor::IsTableElement");
nsCOMPtr<nsIAtom> nodeAtom = nsEditor::GetTag(node);
return (nodeAtom == nsEditProperty::table)
|| (nodeAtom == nsEditProperty::tr)
|| (nodeAtom == nsEditProperty::td)
|| (nodeAtom == nsEditProperty::th)
|| (nodeAtom == nsEditProperty::thead)
|| (nodeAtom == nsEditProperty::tfoot)
|| (nodeAtom == nsEditProperty::tbody)
|| (nodeAtom == nsEditProperty::caption);
}
///////////////////////////////////////////////////////////////////////////
// IsTableElementButNotTable: true if node an html td, tr, ... (doesn't include table)
//
PRBool
nsHTMLEditUtils::IsTableElementButNotTable(nsIDOMNode *node)
{
NS_PRECONDITION(node, "null node passed to nsHTMLEditor::IsTableElementButNotTable");
nsCOMPtr<nsIAtom> nodeAtom = nsEditor::GetTag(node);
return (nodeAtom == nsEditProperty::tr)
|| (nodeAtom == nsEditProperty::td)
|| (nodeAtom == nsEditProperty::th)
|| (nodeAtom == nsEditProperty::thead)
|| (nodeAtom == nsEditProperty::tfoot)
|| (nodeAtom == nsEditProperty::tbody)
|| (nodeAtom == nsEditProperty::caption);
}
///////////////////////////////////////////////////////////////////////////
// IsTable: true if node an html table
//
PRBool
nsHTMLEditUtils::IsTable(nsIDOMNode *node)
{
return nsEditor::NodeIsType(node, nsEditProperty::table);
}
///////////////////////////////////////////////////////////////////////////
// IsTableRow: true if node an html tr
//
PRBool
nsHTMLEditUtils::IsTableRow(nsIDOMNode *node)
{
return nsEditor::NodeIsType(node, nsEditProperty::tr);
}
///////////////////////////////////////////////////////////////////////////
// IsTableCell: true if node an html td or th
//
PRBool
nsHTMLEditUtils::IsTableCell(nsIDOMNode *node)
{
NS_PRECONDITION(node, "null parent passed to nsHTMLEditUtils::IsTableCell");
nsCOMPtr<nsIAtom> nodeAtom = nsEditor::GetTag(node);
return (nodeAtom == nsEditProperty::td)
|| (nodeAtom == nsEditProperty::th);
}
///////////////////////////////////////////////////////////////////////////
// IsTableCell: true if node an html td or th
//
PRBool
nsHTMLEditUtils::IsTableCellOrCaption(nsIDOMNode *node)
{
NS_PRECONDITION(node, "null parent passed to nsHTMLEditUtils::IsTableCell");
nsCOMPtr<nsIAtom> nodeAtom = nsEditor::GetTag(node);
return (nodeAtom == nsEditProperty::td)
|| (nodeAtom == nsEditProperty::th)
|| (nodeAtom == nsEditProperty::caption);
}
///////////////////////////////////////////////////////////////////////////
// IsList: true if node an html list
//
PRBool
nsHTMLEditUtils::IsList(nsIDOMNode *node)
{
NS_PRECONDITION(node, "null parent passed to nsHTMLEditUtils::IsList");
nsCOMPtr<nsIAtom> nodeAtom = nsEditor::GetTag(node);
return (nodeAtom == nsEditProperty::ul)
|| (nodeAtom == nsEditProperty::ol)
|| (nodeAtom == nsEditProperty::dl);
}
///////////////////////////////////////////////////////////////////////////
// IsOrderedList: true if node an html ordered list
//
PRBool
nsHTMLEditUtils::IsOrderedList(nsIDOMNode *node)
{
return nsEditor::NodeIsType(node, nsEditProperty::ol);
}
///////////////////////////////////////////////////////////////////////////
// IsUnorderedList: true if node an html unordered list
//
PRBool
nsHTMLEditUtils::IsUnorderedList(nsIDOMNode *node)
{
return nsEditor::NodeIsType(node, nsEditProperty::ul);
}
///////////////////////////////////////////////////////////////////////////
// IsBlockquote: true if node an html blockquote node
//
PRBool
nsHTMLEditUtils::IsBlockquote(nsIDOMNode *node)
{
return nsEditor::NodeIsType(node, nsEditProperty::blockquote);
}
///////////////////////////////////////////////////////////////////////////
// IsPre: true if node an html pre node
//
PRBool
nsHTMLEditUtils::IsPre(nsIDOMNode *node)
{
return nsEditor::NodeIsType(node, nsEditProperty::pre);
}
///////////////////////////////////////////////////////////////////////////
// IsAddress: true if node an html address node
//
PRBool
nsHTMLEditUtils::IsAddress(nsIDOMNode *node)
{
return nsEditor::NodeIsType(node, nsEditProperty::address);
}
///////////////////////////////////////////////////////////////////////////
// IsImage: true if node an html image node
//
PRBool
nsHTMLEditUtils::IsImage(nsIDOMNode *node)
{
return nsEditor::NodeIsType(node, nsEditProperty::img);
}
PRBool
nsHTMLEditUtils::IsLink(nsIDOMNode *aNode)
{
if (!aNode) return PR_FALSE;
nsCOMPtr<nsIDOMHTMLAnchorElement> anchor = do_QueryInterface(aNode);
if (anchor)
{
nsAutoString tmpText;
if (NS_SUCCEEDED(anchor->GetHref(tmpText)) && !tmpText.IsEmpty())
return PR_TRUE;
}
return PR_FALSE;
}
PRBool
nsHTMLEditUtils::IsNamedAnchor(nsIDOMNode *aNode)
{
if (!aNode) return PR_FALSE;
nsCOMPtr<nsIDOMHTMLAnchorElement> anchor = do_QueryInterface(aNode);
if (anchor)
{
nsAutoString tmpText;
if (NS_SUCCEEDED(anchor->GetName(tmpText)) && !tmpText.IsEmpty())
return PR_TRUE;
}
return PR_FALSE;
}
///////////////////////////////////////////////////////////////////////////
// IsDiv: true if node an html div node
//
PRBool
nsHTMLEditUtils::IsDiv(nsIDOMNode *node)
{
return nsEditor::NodeIsType(node, nsEditProperty::div);
}
///////////////////////////////////////////////////////////////////////////
// IsMozDiv: true if node an html div node with type = _moz
//
PRBool
nsHTMLEditUtils::IsMozDiv(nsIDOMNode *node)
{
if (IsDiv(node) && nsTextEditUtils::HasMozAttr(node)) return PR_TRUE;
return PR_FALSE;
}
///////////////////////////////////////////////////////////////////////////
// IsMailCite: true if node an html blockquote with type=cite
//
PRBool
nsHTMLEditUtils::IsMailCite(nsIDOMNode *node)
{
NS_PRECONDITION(node, "null parent passed to nsHTMLEditUtils::IsMailCite");
nsCOMPtr<nsIDOMElement> elem = do_QueryInterface(node);
if (!elem) return PR_FALSE;
nsAutoString attrName (NS_LITERAL_STRING("type"));
// don't ask me why, but our html mailcites are id'd by "type=cite"...
nsAutoString attrVal;
nsresult res = elem->GetAttribute(attrName, attrVal);
ToLowerCase(attrVal);
if (NS_SUCCEEDED(res))
{
if (attrVal.EqualsLiteral("cite"))
return PR_TRUE;
}
// ... but our plaintext mailcites by "_moz_quote=true". go figure.
attrName.AssignLiteral("_moz_quote");
res = elem->GetAttribute(attrName, attrVal);
if (NS_SUCCEEDED(res))
{
ToLowerCase(attrVal);
if (attrVal.EqualsLiteral("true"))
return PR_TRUE;
}
return PR_FALSE;
}
///////////////////////////////////////////////////////////////////////////
// IsFormWidget: true if node is a form widget of some kind
//
PRBool
nsHTMLEditUtils::IsFormWidget(nsIDOMNode *node)
{
NS_PRECONDITION(node, "null node passed to nsHTMLEditUtils::IsFormWidget");
nsCOMPtr<nsIAtom> nodeAtom = nsEditor::GetTag(node);
return (nodeAtom == nsEditProperty::textarea)
|| (nodeAtom == nsEditProperty::select)
|| (nodeAtom == nsEditProperty::button)
|| (nodeAtom == nsEditProperty::input);
}
PRBool
nsHTMLEditUtils::SupportsAlignAttr(nsIDOMNode * aNode)
{
NS_PRECONDITION(aNode, "null node passed to nsHTMLEditUtils::SupportsAlignAttr");
nsCOMPtr<nsIAtom> nodeAtom = nsEditor::GetTag(aNode);
return (nodeAtom == nsEditProperty::hr)
|| (nodeAtom == nsEditProperty::table)
|| (nodeAtom == nsEditProperty::tbody)
|| (nodeAtom == nsEditProperty::tfoot)
|| (nodeAtom == nsEditProperty::thead)
|| (nodeAtom == nsEditProperty::tr)
|| (nodeAtom == nsEditProperty::td)
|| (nodeAtom == nsEditProperty::th)
|| (nodeAtom == nsEditProperty::div)
|| (nodeAtom == nsEditProperty::p)
|| (nodeAtom == nsEditProperty::h1)
|| (nodeAtom == nsEditProperty::h2)
|| (nodeAtom == nsEditProperty::h3)
|| (nodeAtom == nsEditProperty::h4)
|| (nodeAtom == nsEditProperty::h5)
|| (nodeAtom == nsEditProperty::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, isindex, 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, del, dfn, em, ins, kbd, samp, strong, var
#define GROUP_PHRASE (1 << 4)
// a, applet, basefont, bdo, br, font, iframe, img, map, object, q, script,
// span, sub, sup
#define GROUP_SPECIAL (1 << 5)
// button, form, input, label, select, textarea
#define GROUP_FORMCONTROL (1 << 6)
// address, applet, blockquote, button, center, del, dir, div, dl, fieldset,
// form, h1, h2, h3, h4, h5, h6, hr, iframe, ins, isindex, map, menu, noframes,
// noscript, object, ol, p, pre, table, 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_OPTGROUP_CONTENT (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)
#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
PRUint32 mGroup;
PRUint32 mCanContainGroups;
PRPackedBool mIsContainer;
PRPackedBool 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, PR_TRUE, PR_FALSE, GROUP_SPECIAL, GROUP_INLINE_ELEMENT),
ELEM(abbr, PR_TRUE, PR_TRUE, GROUP_PHRASE, GROUP_INLINE_ELEMENT),
ELEM(acronym, PR_TRUE, PR_TRUE, GROUP_PHRASE, GROUP_INLINE_ELEMENT),
ELEM(address, PR_TRUE, PR_TRUE, GROUP_BLOCK,
GROUP_INLINE_ELEMENT | GROUP_P),
ELEM(applet, PR_TRUE, PR_TRUE, GROUP_SPECIAL | GROUP_BLOCK,
GROUP_FLOW_ELEMENT | GROUP_OBJECT_CONTENT),
ELEM(area, PR_FALSE, PR_FALSE, GROUP_MAP_CONTENT, GROUP_NONE),
ELEM(b, PR_TRUE, PR_TRUE, GROUP_FONTSTYLE, GROUP_INLINE_ELEMENT),
ELEM(base, PR_FALSE, PR_FALSE, GROUP_HEAD_CONTENT, GROUP_NONE),
ELEM(basefont, PR_FALSE, PR_FALSE, GROUP_SPECIAL, GROUP_NONE),
ELEM(bdo, PR_TRUE, PR_TRUE, GROUP_SPECIAL, GROUP_INLINE_ELEMENT),
ELEM(bgsound, PR_FALSE, PR_FALSE, GROUP_NONE, GROUP_NONE),
ELEM(big, PR_TRUE, PR_TRUE, GROUP_FONTSTYLE, GROUP_INLINE_ELEMENT),
ELEM(blink, PR_FALSE, PR_FALSE, GROUP_NONE, GROUP_NONE),
ELEM(blockquote, PR_TRUE, PR_TRUE, GROUP_BLOCK, GROUP_FLOW_ELEMENT),
ELEM(body, PR_TRUE, PR_TRUE, GROUP_TOPLEVEL, GROUP_FLOW_ELEMENT),
ELEM(br, PR_FALSE, PR_FALSE, GROUP_SPECIAL, GROUP_NONE),
ELEM(button, PR_TRUE, PR_TRUE, GROUP_FORMCONTROL | GROUP_BLOCK,
GROUP_FLOW_ELEMENT),
ELEM(canvas, PR_FALSE, PR_FALSE, GROUP_NONE, GROUP_NONE),
ELEM(caption, PR_TRUE, PR_TRUE, GROUP_NONE, GROUP_INLINE_ELEMENT),
ELEM(center, PR_TRUE, PR_TRUE, GROUP_BLOCK, GROUP_FLOW_ELEMENT),
ELEM(cite, PR_TRUE, PR_TRUE, GROUP_PHRASE, GROUP_INLINE_ELEMENT),
ELEM(code, PR_TRUE, PR_TRUE, GROUP_PHRASE, GROUP_INLINE_ELEMENT),
ELEM(col, PR_FALSE, PR_FALSE, GROUP_TABLE_CONTENT | GROUP_COLGROUP_CONTENT,
GROUP_NONE),
ELEM(colgroup, PR_TRUE, PR_FALSE, GROUP_NONE, GROUP_COLGROUP_CONTENT),
ELEM(dd, PR_TRUE, PR_FALSE, GROUP_DL_CONTENT, GROUP_FLOW_ELEMENT),
ELEM(del, PR_TRUE, PR_TRUE, GROUP_PHRASE | GROUP_BLOCK, GROUP_FLOW_ELEMENT),
ELEM(dfn, PR_TRUE, PR_TRUE, GROUP_PHRASE, GROUP_INLINE_ELEMENT),
ELEM(dir, PR_TRUE, PR_FALSE, GROUP_BLOCK, GROUP_LI),
ELEM(div, PR_TRUE, PR_TRUE, GROUP_BLOCK, GROUP_FLOW_ELEMENT),
ELEM(dl, PR_TRUE, PR_FALSE, GROUP_BLOCK, GROUP_DL_CONTENT),
ELEM(dt, PR_TRUE, PR_TRUE, GROUP_DL_CONTENT, GROUP_INLINE_ELEMENT),
ELEM(em, PR_TRUE, PR_TRUE, GROUP_PHRASE, GROUP_INLINE_ELEMENT),
ELEM(embed, PR_FALSE, PR_FALSE, GROUP_NONE, GROUP_NONE),
ELEM(fieldset, PR_TRUE, PR_TRUE, GROUP_BLOCK, GROUP_FLOW_ELEMENT),
ELEM(font, PR_TRUE, PR_TRUE, GROUP_SPECIAL, GROUP_INLINE_ELEMENT),
ELEM(form, PR_TRUE, PR_TRUE, GROUP_BLOCK, GROUP_FLOW_ELEMENT),
ELEM(frame, PR_FALSE, PR_FALSE, GROUP_FRAME, GROUP_NONE),
ELEM(frameset, PR_TRUE, PR_TRUE, GROUP_FRAME, GROUP_FRAME),
ELEM(h1, PR_TRUE, PR_FALSE, GROUP_BLOCK, GROUP_INLINE_ELEMENT),
ELEM(h2, PR_TRUE, PR_FALSE, GROUP_BLOCK, GROUP_INLINE_ELEMENT),
ELEM(h3, PR_TRUE, PR_FALSE, GROUP_BLOCK, GROUP_INLINE_ELEMENT),
ELEM(h4, PR_TRUE, PR_FALSE, GROUP_BLOCK, GROUP_INLINE_ELEMENT),
ELEM(h5, PR_TRUE, PR_FALSE, GROUP_BLOCK, GROUP_INLINE_ELEMENT),
ELEM(h6, PR_TRUE, PR_FALSE, GROUP_BLOCK, GROUP_INLINE_ELEMENT),
ELEM(head, PR_TRUE, PR_FALSE, GROUP_TOPLEVEL, GROUP_HEAD_CONTENT),
ELEM(hr, PR_FALSE, PR_FALSE, GROUP_BLOCK, GROUP_NONE),
ELEM(html, PR_TRUE, PR_FALSE, GROUP_TOPLEVEL, GROUP_TOPLEVEL),
ELEM(i, PR_TRUE, PR_TRUE, GROUP_FONTSTYLE, GROUP_INLINE_ELEMENT),
ELEM(iframe, PR_TRUE, PR_TRUE, GROUP_SPECIAL | GROUP_BLOCK,
GROUP_FLOW_ELEMENT),
ELEM(image, PR_FALSE, PR_FALSE, GROUP_NONE, GROUP_NONE),
ELEM(img, PR_FALSE, PR_FALSE, GROUP_SPECIAL, GROUP_NONE),
ELEM(input, PR_FALSE, PR_FALSE, GROUP_FORMCONTROL, GROUP_NONE),
ELEM(ins, PR_TRUE, PR_TRUE, GROUP_PHRASE | GROUP_BLOCK, GROUP_FLOW_ELEMENT),
ELEM(isindex, PR_FALSE, PR_FALSE, GROUP_BLOCK | GROUP_HEAD_CONTENT,
GROUP_NONE),
ELEM(kbd, PR_TRUE, PR_TRUE, GROUP_PHRASE, GROUP_INLINE_ELEMENT),
ELEM(keygen, PR_FALSE, PR_FALSE, GROUP_NONE, GROUP_NONE),
ELEM(label, PR_TRUE, PR_FALSE, GROUP_FORMCONTROL, GROUP_INLINE_ELEMENT),
ELEM(legend, PR_TRUE, PR_TRUE, GROUP_NONE, GROUP_INLINE_ELEMENT),
ELEM(li, PR_TRUE, PR_FALSE, GROUP_LI, GROUP_FLOW_ELEMENT),
ELEM(link, PR_FALSE, PR_FALSE, GROUP_HEAD_CONTENT, GROUP_NONE),
ELEM(listing, PR_FALSE, PR_FALSE, GROUP_NONE, GROUP_NONE),
ELEM(map, PR_TRUE, PR_TRUE, GROUP_SPECIAL, GROUP_BLOCK | GROUP_MAP_CONTENT),
ELEM(marquee, PR_FALSE, PR_FALSE, GROUP_NONE, GROUP_NONE),
ELEM(menu, PR_TRUE, PR_FALSE, GROUP_BLOCK, GROUP_LI),
ELEM(meta, PR_FALSE, PR_FALSE, GROUP_HEAD_CONTENT, GROUP_NONE),
ELEM(multicol, PR_FALSE, PR_FALSE, GROUP_NONE, GROUP_NONE),
ELEM(nobr, PR_FALSE, PR_FALSE, GROUP_NONE, GROUP_NONE),
ELEM(noembed, PR_FALSE, PR_FALSE, GROUP_NONE, GROUP_NONE),
ELEM(noframes, PR_TRUE, PR_TRUE, GROUP_BLOCK, GROUP_FLOW_ELEMENT),
ELEM(noscript, PR_TRUE, PR_TRUE, GROUP_BLOCK, GROUP_FLOW_ELEMENT),
ELEM(object, PR_TRUE, PR_TRUE, GROUP_SPECIAL | GROUP_BLOCK,
GROUP_FLOW_ELEMENT | GROUP_OBJECT_CONTENT),
// XXX Can contain self and ul because editor does sublists illegally.
ELEM(ol, PR_TRUE, PR_TRUE, GROUP_BLOCK | GROUP_OL_UL,
GROUP_LI | GROUP_OL_UL),
ELEM(optgroup, PR_TRUE, PR_FALSE, GROUP_SELECT_CONTENT,
GROUP_OPTGROUP_CONTENT),
ELEM(option, PR_TRUE, PR_FALSE,
GROUP_SELECT_CONTENT | GROUP_OPTGROUP_CONTENT, GROUP_LEAF),
ELEM(p, PR_TRUE, PR_FALSE, GROUP_BLOCK | GROUP_P, GROUP_INLINE_ELEMENT),
ELEM(param, PR_FALSE, PR_FALSE, GROUP_OBJECT_CONTENT, GROUP_NONE),
ELEM(plaintext, PR_FALSE, PR_FALSE, GROUP_NONE, GROUP_NONE),
ELEM(pre, PR_TRUE, PR_TRUE, GROUP_BLOCK, GROUP_INLINE_ELEMENT),
ELEM(q, PR_TRUE, PR_TRUE, GROUP_SPECIAL, GROUP_INLINE_ELEMENT),
ELEM(s, PR_TRUE, PR_TRUE, GROUP_FONTSTYLE, GROUP_INLINE_ELEMENT),
ELEM(samp, PR_TRUE, PR_TRUE, GROUP_PHRASE, GROUP_INLINE_ELEMENT),
ELEM(script, PR_TRUE, PR_FALSE, GROUP_HEAD_CONTENT | GROUP_SPECIAL,
GROUP_LEAF),
ELEM(select, PR_TRUE, PR_FALSE, GROUP_FORMCONTROL, GROUP_SELECT_CONTENT),
ELEM(small, PR_TRUE, PR_TRUE, GROUP_FONTSTYLE, GROUP_INLINE_ELEMENT),
ELEM(sound, PR_FALSE, PR_FALSE, GROUP_NONE, GROUP_NONE),
ELEM(spacer, PR_FALSE, PR_FALSE, GROUP_NONE, GROUP_NONE),
ELEM(span, PR_TRUE, PR_TRUE, GROUP_SPECIAL, GROUP_INLINE_ELEMENT),
ELEM(strike, PR_TRUE, PR_TRUE, GROUP_FONTSTYLE, GROUP_INLINE_ELEMENT),
ELEM(strong, PR_TRUE, PR_TRUE, GROUP_PHRASE, GROUP_INLINE_ELEMENT),
ELEM(style, PR_TRUE, PR_FALSE, GROUP_HEAD_CONTENT, GROUP_LEAF),
ELEM(sub, PR_TRUE, PR_TRUE, GROUP_SPECIAL, GROUP_INLINE_ELEMENT),
ELEM(sup, PR_TRUE, PR_TRUE, GROUP_SPECIAL, GROUP_INLINE_ELEMENT),
ELEM(table, PR_TRUE, PR_FALSE, GROUP_BLOCK, GROUP_TABLE_CONTENT),
ELEM(tbody, PR_TRUE, PR_FALSE, GROUP_TABLE_CONTENT, GROUP_TBODY_CONTENT),
ELEM(td, PR_TRUE, PR_FALSE, GROUP_TR_CONTENT, GROUP_FLOW_ELEMENT),
ELEM(textarea, PR_TRUE, PR_FALSE, GROUP_FORMCONTROL, GROUP_LEAF),
ELEM(tfoot, PR_TRUE, PR_FALSE, GROUP_NONE, GROUP_TBODY_CONTENT),
ELEM(th, PR_TRUE, PR_FALSE, GROUP_TR_CONTENT, GROUP_FLOW_ELEMENT),
ELEM(thead, PR_TRUE, PR_FALSE, GROUP_NONE, GROUP_TBODY_CONTENT),
ELEM(title, PR_TRUE, PR_FALSE, GROUP_HEAD_CONTENT, GROUP_LEAF),
ELEM(tr, PR_TRUE, PR_FALSE, GROUP_TBODY_CONTENT, GROUP_TR_CONTENT),
ELEM(tt, PR_TRUE, PR_TRUE, GROUP_FONTSTYLE, GROUP_INLINE_ELEMENT),
ELEM(u, PR_TRUE, PR_TRUE, GROUP_FONTSTYLE, GROUP_INLINE_ELEMENT),
// XXX Can contain self and ol because editor does sublists illegally.
ELEM(ul, PR_TRUE, PR_TRUE, GROUP_BLOCK | GROUP_OL_UL,
GROUP_LI | GROUP_OL_UL),
ELEM(var, PR_TRUE, PR_TRUE, GROUP_PHRASE, GROUP_INLINE_ELEMENT),
ELEM(wbr, PR_FALSE, PR_FALSE, GROUP_NONE, GROUP_NONE),
ELEM(xmp, PR_FALSE, PR_FALSE, GROUP_NONE, GROUP_NONE),
// These aren't elements.
ELEM(text, PR_FALSE, PR_FALSE, GROUP_LEAF, GROUP_NONE),
ELEM(whitespace, PR_FALSE, PR_FALSE, GROUP_LEAF, GROUP_NONE),
ELEM(newline, PR_FALSE, PR_FALSE, GROUP_LEAF, GROUP_NONE),
ELEM(comment, PR_FALSE, PR_FALSE, GROUP_LEAF, GROUP_NONE),
ELEM(entity, PR_FALSE, PR_FALSE, GROUP_NONE, GROUP_NONE),
ELEM(doctypeDecl, PR_FALSE, PR_FALSE, GROUP_NONE, GROUP_NONE),
ELEM(markupDecl, PR_FALSE, PR_FALSE, GROUP_NONE, GROUP_NONE),
ELEM(instruction, PR_FALSE, PR_FALSE, GROUP_NONE, GROUP_NONE),
ELEM(userdefined, PR_TRUE, PR_FALSE, GROUP_NONE, GROUP_FLOW_ELEMENT)
};
PRBool
nsHTMLEditUtils::CanContain(PRInt32 aParent, PRInt32 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 PRBool checked = PR_FALSE;
if (!checked) {
checked = PR_TRUE;
PRInt32 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_isindex,
eHTMLTag_select,
eHTMLTag_textarea
};
PRUint32 j;
for (j = 0; j < NS_ARRAY_LENGTH(kButtonExcludeKids); ++j) {
if (kButtonExcludeKids[j] == aChild) {
return PR_FALSE;
}
}
}
// Deprecated elements.
if (aChild == eHTMLTag_bgsound || aChild == eHTMLTag_keygen) {
return PR_FALSE;
}
// Bug #67007, dont strip userdefined tags.
if (aChild == eHTMLTag_userdefined) {
return PR_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;
}
PRBool
nsHTMLEditUtils::IsContainer(PRInt32 aTag)
{
NS_ASSERTION(aTag > eHTMLTag_unknown && aTag <= eHTMLTag_userdefined,
"aTag out of range!");
return kElements[aTag - 1].mIsContainer;
}