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: NPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Netscape 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/NPL/
*
* 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 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
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* 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
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*
* ***** END LICENSE BLOCK ***** */
#include "nsHTMLEditUtils.h"
#include "nsTextEditUtils.h"
#include "nsString.h"
#include "nsEditor.h"
#include "nsIDOMNode.h"
#include "nsIContent.h"
#include "nsIDOMNodeList.h"
#include "nsIDOMHTMLAnchorElement.h"
///////////////////////////////////////////////////////////////////////////
//
PRBool
nsHTMLEditUtils::IsBig(nsIDOMNode *node)
{
return nsTextEditUtils::NodeIsType(node, NS_LITERAL_STRING("big"));
}
///////////////////////////////////////////////////////////////////////////
//
PRBool
nsHTMLEditUtils::IsSmall(nsIDOMNode *node)
{
return nsTextEditUtils::NodeIsType(node, NS_LITERAL_STRING("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");
nsAutoString tag;
nsEditor::GetTagString(node,tag);
tag.ToLowerCase();
if ( (tag.Equals(NS_LITERAL_STRING("h1"))) ||
(tag.Equals(NS_LITERAL_STRING("h2"))) ||
(tag.Equals(NS_LITERAL_STRING("h3"))) ||
(tag.Equals(NS_LITERAL_STRING("h4"))) ||
(tag.Equals(NS_LITERAL_STRING("h5"))) ||
(tag.Equals(NS_LITERAL_STRING("h6"))) )
{
return PR_TRUE;
}
return PR_FALSE;
}
///////////////////////////////////////////////////////////////////////////
// IsParagraph: true if node an html paragraph
//
PRBool
nsHTMLEditUtils::IsParagraph(nsIDOMNode *node)
{
return nsTextEditUtils::NodeIsType(node, NS_LITERAL_STRING("p"));
}
///////////////////////////////////////////////////////////////////////////
// IsHR: true if node an horizontal rule
//
PRBool
nsHTMLEditUtils::IsHR(nsIDOMNode *node)
{
return nsTextEditUtils::NodeIsType(node, NS_LITERAL_STRING("hr"));
}
///////////////////////////////////////////////////////////////////////////
// IsListItem: true if node an html list item
//
PRBool
nsHTMLEditUtils::IsListItem(nsIDOMNode *node)
{
NS_PRECONDITION(node, "null parent passed to nsHTMLEditUtils::IsListItem");
nsAutoString tag;
nsEditor::GetTagString(node,tag);
tag.ToLowerCase();
if (tag.Equals(NS_LITERAL_STRING("li")) ||
tag.Equals(NS_LITERAL_STRING("dd")) ||
tag.Equals(NS_LITERAL_STRING("dt")))
{
return PR_TRUE;
}
return PR_FALSE;
}
///////////////////////////////////////////////////////////////////////////
// IsTableElement: true if node an html table, td, tr, ...
//
PRBool
nsHTMLEditUtils::IsTableElement(nsIDOMNode *node)
{
NS_PRECONDITION(node, "null node passed to nsHTMLEditor::IsTableElement");
nsAutoString tagName;
nsEditor::GetTagString(node,tagName);
if (tagName.Equals(NS_LITERAL_STRING("table")) || tagName.Equals(NS_LITERAL_STRING("tr")) ||
tagName.Equals(NS_LITERAL_STRING("td")) || tagName.Equals(NS_LITERAL_STRING("th")) ||
tagName.Equals(NS_LITERAL_STRING("thead")) || tagName.Equals(NS_LITERAL_STRING("tfoot")) ||
tagName.Equals(NS_LITERAL_STRING("tbody")) || tagName.Equals(NS_LITERAL_STRING("caption")))
{
return PR_TRUE;
}
return PR_FALSE;
}
///////////////////////////////////////////////////////////////////////////
// IsTable: true if node an html table
//
PRBool
nsHTMLEditUtils::IsTable(nsIDOMNode *node)
{
return nsTextEditUtils::NodeIsType(node, NS_LITERAL_STRING("table"));
}
///////////////////////////////////////////////////////////////////////////
// IsTableRow: true if node an html tr
//
PRBool
nsHTMLEditUtils::IsTableRow(nsIDOMNode *node)
{
return nsTextEditUtils::NodeIsType(node, NS_LITERAL_STRING("tr"));
}
///////////////////////////////////////////////////////////////////////////
// IsTableCell: true if node an html td or th
//
PRBool
nsHTMLEditUtils::IsTableCell(nsIDOMNode *node)
{
NS_PRECONDITION(node, "null parent passed to nsHTMLEditUtils::IsTableCell");
nsAutoString tag;
nsEditor::GetTagString(node,tag);
tag.ToLowerCase();
if (tag.Equals(NS_LITERAL_STRING("td")) || tag.Equals(NS_LITERAL_STRING("th")))
{
return PR_TRUE;
}
return PR_FALSE;
}
///////////////////////////////////////////////////////////////////////////
// IsTableCell: true if node an html td or th
//
PRBool
nsHTMLEditUtils::IsTableCellOrCaption(nsIDOMNode *node)
{
NS_PRECONDITION(node, "null parent passed to nsHTMLEditUtils::IsTableCell");
nsAutoString tag;
nsEditor::GetTagString(node,tag);
tag.ToLowerCase();
if (tag.Equals(NS_LITERAL_STRING("td")) ||
tag.Equals(NS_LITERAL_STRING("th")) ||
tag.Equals(NS_LITERAL_STRING("caption")) )
{
return PR_TRUE;
}
return PR_FALSE;
}
///////////////////////////////////////////////////////////////////////////
// IsList: true if node an html list
//
PRBool
nsHTMLEditUtils::IsList(nsIDOMNode *node)
{
NS_PRECONDITION(node, "null parent passed to nsHTMLEditUtils::IsList");
nsAutoString tag;
nsEditor::GetTagString(node,tag);
tag.ToLowerCase();
if ( (tag.Equals(NS_LITERAL_STRING("dl"))) ||
(tag.Equals(NS_LITERAL_STRING("ol"))) ||
(tag.Equals(NS_LITERAL_STRING("ul"))) )
{
return PR_TRUE;
}
return PR_FALSE;
}
///////////////////////////////////////////////////////////////////////////
// IsOrderedList: true if node an html ordered list
//
PRBool
nsHTMLEditUtils::IsOrderedList(nsIDOMNode *node)
{
return nsTextEditUtils::NodeIsType(node, NS_LITERAL_STRING("ol"));
}
///////////////////////////////////////////////////////////////////////////
// IsUnorderedList: true if node an html unordered list
//
PRBool
nsHTMLEditUtils::IsUnorderedList(nsIDOMNode *node)
{
return nsTextEditUtils::NodeIsType(node, NS_LITERAL_STRING("ul"));
}
///////////////////////////////////////////////////////////////////////////
// IsDefinitionList: true if node an html definition list
//
PRBool
nsHTMLEditUtils::IsDefinitionList(nsIDOMNode *node)
{
return nsTextEditUtils::NodeIsType(node, NS_LITERAL_STRING("dl"));
}
///////////////////////////////////////////////////////////////////////////
// IsBlockquote: true if node an html blockquote node
//
PRBool
nsHTMLEditUtils::IsBlockquote(nsIDOMNode *node)
{
return nsTextEditUtils::NodeIsType(node, NS_LITERAL_STRING("blockquote"));
}
///////////////////////////////////////////////////////////////////////////
// IsPre: true if node an html pre node
//
PRBool
nsHTMLEditUtils::IsPre(nsIDOMNode *node)
{
return nsTextEditUtils::NodeIsType(node, NS_LITERAL_STRING("pre"));
}
///////////////////////////////////////////////////////////////////////////
// IsAddress: true if node an html address node
//
PRBool
nsHTMLEditUtils::IsAddress(nsIDOMNode *node)
{
return nsTextEditUtils::NodeIsType(node, NS_LITERAL_STRING("address"));
}
///////////////////////////////////////////////////////////////////////////
// IsAnchor: true if node an html anchor node
//
PRBool
nsHTMLEditUtils::IsAnchor(nsIDOMNode *node)
{
return nsTextEditUtils::NodeIsType(node, NS_LITERAL_STRING("a"));
}
///////////////////////////////////////////////////////////////////////////
// IsImage: true if node an html image node
//
PRBool
nsHTMLEditUtils::IsImage(nsIDOMNode *node)
{
return nsTextEditUtils::NodeIsType(node, NS_LITERAL_STRING("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.get() && tmpText.Length() != 0)
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.get() && tmpText.Length() != 0)
return PR_TRUE;
}
return PR_FALSE;
}
///////////////////////////////////////////////////////////////////////////
// IsDiv: true if node an html div node
//
PRBool
nsHTMLEditUtils::IsDiv(nsIDOMNode *node)
{
return nsTextEditUtils::NodeIsType(node, NS_LITERAL_STRING("div"));
}
///////////////////////////////////////////////////////////////////////////
// IsNormalDiv: true if node an html div node, without type = _moz
//
PRBool
nsHTMLEditUtils::IsNormalDiv(nsIDOMNode *node)
{
if (IsDiv(node) && !nsTextEditUtils::HasMozAttr(node)) return PR_TRUE;
return PR_FALSE;
}
///////////////////////////////////////////////////////////////////////////
// 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");
if (IsBlockquote(node))
{
nsCOMPtr<nsIDOMElement> bqElem = do_QueryInterface(node);
nsAutoString typeAttrName(NS_LITERAL_STRING("type"));
nsAutoString typeAttrVal;
nsresult res = bqElem->GetAttribute(typeAttrName, typeAttrVal);
typeAttrVal.ToLowerCase();
if (NS_SUCCEEDED(res))
{
if (typeAttrVal.EqualsWithConversion("cite", PR_TRUE, 4))
return PR_TRUE;
}
}
return PR_FALSE;
}
///////////////////////////////////////////////////////////////////////////
// IsTextarea: true if node is an html textarea node
//
PRBool
nsHTMLEditUtils::IsTextarea(nsIDOMNode *node)
{
return nsTextEditUtils::NodeIsType(node, NS_LITERAL_STRING("textarea"));
}
///////////////////////////////////////////////////////////////////////////
// IsMap: true if node is an html map node
//
PRBool
nsHTMLEditUtils::IsMap(nsIDOMNode *node)
{
return nsTextEditUtils::NodeIsType(node, NS_LITERAL_STRING("map"));
}
PRBool
nsHTMLEditUtils::IsDescendantOf(nsIDOMNode *aNode, nsIDOMNode *aParent, PRInt32 *aOffset)
{
if (!aNode && !aParent) return PR_FALSE;
if (aNode == aParent) return PR_FALSE;
nsCOMPtr<nsIDOMNode> parent, node = do_QueryInterface(aNode);
nsresult res;
do
{
res = node->GetParentNode(getter_AddRefs(parent));
if (NS_FAILED(res)) return PR_FALSE;
if (parent.get() == aParent)
{
if (aOffset)
{
nsCOMPtr<nsIContent> pCon(do_QueryInterface(parent));
nsCOMPtr<nsIContent> cCon(do_QueryInterface(node));
if (pCon && cCon)
{
pCon->IndexOf(cCon, *aOffset);
}
}
return PR_TRUE;
}
node = parent;
} while (parent);
return PR_FALSE;
}
PRBool
nsHTMLEditUtils::IsLeafNode(nsIDOMNode *aNode)
{
if (!aNode) return PR_FALSE;
PRBool hasChildren = PR_FALSE;
aNode->HasChildNodes(&hasChildren);
return !hasChildren;
}
PRBool
nsHTMLEditUtils::SupportsAlignAttr(nsIDOMNode * aNode)
{
NS_PRECONDITION(aNode, "null node passed to nsHTMLEditUtils::SupportsAlignAttr");
nsAutoString tag;
nsEditor::GetTagString(aNode, tag);
tag.ToLowerCase();
if (tag.Equals(NS_LITERAL_STRING("hr")) ||
tag.Equals(NS_LITERAL_STRING("table")) ||
tag.Equals(NS_LITERAL_STRING("tbody")) ||
tag.Equals(NS_LITERAL_STRING("tfoot")) ||
tag.Equals(NS_LITERAL_STRING("thead")) ||
tag.Equals(NS_LITERAL_STRING("tr")) ||
tag.Equals(NS_LITERAL_STRING("td")) ||
tag.Equals(NS_LITERAL_STRING("th")) ||
tag.Equals(NS_LITERAL_STRING("div")) ||
tag.Equals(NS_LITERAL_STRING("p")) ||
tag.Equals(NS_LITERAL_STRING("h1")) ||
tag.Equals(NS_LITERAL_STRING("h2")) ||
tag.Equals(NS_LITERAL_STRING("h3")) ||
tag.Equals(NS_LITERAL_STRING("h4")) ||
tag.Equals(NS_LITERAL_STRING("h5")) ||
tag.Equals(NS_LITERAL_STRING("h6"))) {
return PR_TRUE;
}
return PR_FALSE;
}