mirror of
https://github.com/mozilla/gecko-dev.git
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465 lines
14 KiB
C++
465 lines
14 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: NPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.1 (the "License"); you may not use this file except in
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* compliance with the License. You may obtain a copy of the License at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the NPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the NPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "nsHTMLEditUtils.h"
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#include "nsTextEditUtils.h"
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#include "nsString.h"
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#include "nsUnicharUtils.h"
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#include "nsEditor.h"
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#include "nsIDOMNode.h"
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#include "nsIContent.h"
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#include "nsIDOMNodeList.h"
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#include "nsIDOMHTMLAnchorElement.h"
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///////////////////////////////////////////////////////////////////////////
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//
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PRBool
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nsHTMLEditUtils::IsBig(nsIDOMNode *node)
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{
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return nsTextEditUtils::NodeIsType(node, NS_LITERAL_STRING("big"));
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}
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///////////////////////////////////////////////////////////////////////////
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//
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PRBool
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nsHTMLEditUtils::IsSmall(nsIDOMNode *node)
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{
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return nsTextEditUtils::NodeIsType(node, NS_LITERAL_STRING("small"));
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}
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/********************************************************
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* helper methods from nsHTMLEditRules
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********************************************************/
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///////////////////////////////////////////////////////////////////////////
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// IsHeader: true if node an html header
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//
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PRBool
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nsHTMLEditUtils::IsHeader(nsIDOMNode *node)
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{
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NS_PRECONDITION(node, "null parent passed to nsHTMLEditUtils::IsHeader");
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nsAutoString tag;
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nsEditor::GetTagString(node,tag);
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ToLowerCase(tag);
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if ( (tag.Equals(NS_LITERAL_STRING("h1"))) ||
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(tag.Equals(NS_LITERAL_STRING("h2"))) ||
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(tag.Equals(NS_LITERAL_STRING("h3"))) ||
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(tag.Equals(NS_LITERAL_STRING("h4"))) ||
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(tag.Equals(NS_LITERAL_STRING("h5"))) ||
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(tag.Equals(NS_LITERAL_STRING("h6"))) )
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{
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return PR_TRUE;
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}
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return PR_FALSE;
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}
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///////////////////////////////////////////////////////////////////////////
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// IsParagraph: true if node an html paragraph
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//
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PRBool
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nsHTMLEditUtils::IsParagraph(nsIDOMNode *node)
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{
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return nsTextEditUtils::NodeIsType(node, NS_LITERAL_STRING("p"));
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}
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///////////////////////////////////////////////////////////////////////////
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// IsHR: true if node an horizontal rule
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//
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PRBool
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nsHTMLEditUtils::IsHR(nsIDOMNode *node)
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{
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return nsTextEditUtils::NodeIsType(node, NS_LITERAL_STRING("hr"));
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}
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///////////////////////////////////////////////////////////////////////////
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// IsListItem: true if node an html list item
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//
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PRBool
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nsHTMLEditUtils::IsListItem(nsIDOMNode *node)
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{
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NS_PRECONDITION(node, "null parent passed to nsHTMLEditUtils::IsListItem");
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nsAutoString tag;
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nsEditor::GetTagString(node,tag);
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ToLowerCase(tag);
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if (tag.Equals(NS_LITERAL_STRING("li")) ||
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tag.Equals(NS_LITERAL_STRING("dd")) ||
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tag.Equals(NS_LITERAL_STRING("dt")))
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{
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return PR_TRUE;
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}
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return PR_FALSE;
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}
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///////////////////////////////////////////////////////////////////////////
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// IsTableElement: true if node an html table, td, tr, ...
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//
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PRBool
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nsHTMLEditUtils::IsTableElement(nsIDOMNode *node)
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{
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NS_PRECONDITION(node, "null node passed to nsHTMLEditor::IsTableElement");
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nsAutoString tagName;
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nsEditor::GetTagString(node,tagName);
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if (tagName.Equals(NS_LITERAL_STRING("table")) || tagName.Equals(NS_LITERAL_STRING("tr")) ||
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tagName.Equals(NS_LITERAL_STRING("td")) || tagName.Equals(NS_LITERAL_STRING("th")) ||
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tagName.Equals(NS_LITERAL_STRING("thead")) || tagName.Equals(NS_LITERAL_STRING("tfoot")) ||
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tagName.Equals(NS_LITERAL_STRING("tbody")) || tagName.Equals(NS_LITERAL_STRING("caption")))
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{
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return PR_TRUE;
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}
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return PR_FALSE;
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}
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///////////////////////////////////////////////////////////////////////////
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// IsTable: true if node an html table
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//
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PRBool
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nsHTMLEditUtils::IsTable(nsIDOMNode *node)
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{
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return nsTextEditUtils::NodeIsType(node, NS_LITERAL_STRING("table"));
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}
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///////////////////////////////////////////////////////////////////////////
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// IsTableRow: true if node an html tr
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//
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PRBool
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nsHTMLEditUtils::IsTableRow(nsIDOMNode *node)
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{
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return nsTextEditUtils::NodeIsType(node, NS_LITERAL_STRING("tr"));
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}
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///////////////////////////////////////////////////////////////////////////
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// IsTableCell: true if node an html td or th
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//
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PRBool
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nsHTMLEditUtils::IsTableCell(nsIDOMNode *node)
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{
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NS_PRECONDITION(node, "null parent passed to nsHTMLEditUtils::IsTableCell");
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nsAutoString tag;
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nsEditor::GetTagString(node,tag);
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ToLowerCase(tag);
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if (tag.Equals(NS_LITERAL_STRING("td")) || tag.Equals(NS_LITERAL_STRING("th")))
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{
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return PR_TRUE;
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}
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return PR_FALSE;
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}
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///////////////////////////////////////////////////////////////////////////
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// IsTableCell: true if node an html td or th
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//
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PRBool
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nsHTMLEditUtils::IsTableCellOrCaption(nsIDOMNode *node)
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{
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NS_PRECONDITION(node, "null parent passed to nsHTMLEditUtils::IsTableCell");
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nsAutoString tag;
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nsEditor::GetTagString(node,tag);
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ToLowerCase(tag);
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if (tag.Equals(NS_LITERAL_STRING("td")) ||
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tag.Equals(NS_LITERAL_STRING("th")) ||
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tag.Equals(NS_LITERAL_STRING("caption")) )
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{
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return PR_TRUE;
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}
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return PR_FALSE;
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}
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///////////////////////////////////////////////////////////////////////////
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// IsList: true if node an html list
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//
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PRBool
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nsHTMLEditUtils::IsList(nsIDOMNode *node)
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{
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NS_PRECONDITION(node, "null parent passed to nsHTMLEditUtils::IsList");
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nsAutoString tag;
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nsEditor::GetTagString(node,tag);
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ToLowerCase(tag);
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if ( (tag.Equals(NS_LITERAL_STRING("dl"))) ||
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(tag.Equals(NS_LITERAL_STRING("ol"))) ||
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(tag.Equals(NS_LITERAL_STRING("ul"))) )
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{
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return PR_TRUE;
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}
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return PR_FALSE;
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}
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///////////////////////////////////////////////////////////////////////////
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// IsOrderedList: true if node an html ordered list
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//
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PRBool
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nsHTMLEditUtils::IsOrderedList(nsIDOMNode *node)
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{
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return nsTextEditUtils::NodeIsType(node, NS_LITERAL_STRING("ol"));
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}
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///////////////////////////////////////////////////////////////////////////
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// IsUnorderedList: true if node an html unordered list
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//
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PRBool
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nsHTMLEditUtils::IsUnorderedList(nsIDOMNode *node)
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{
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return nsTextEditUtils::NodeIsType(node, NS_LITERAL_STRING("ul"));
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}
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///////////////////////////////////////////////////////////////////////////
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// IsBlockquote: true if node an html blockquote node
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//
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PRBool
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nsHTMLEditUtils::IsBlockquote(nsIDOMNode *node)
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{
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return nsTextEditUtils::NodeIsType(node, NS_LITERAL_STRING("blockquote"));
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}
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///////////////////////////////////////////////////////////////////////////
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// IsPre: true if node an html pre node
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//
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PRBool
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nsHTMLEditUtils::IsPre(nsIDOMNode *node)
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{
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return nsTextEditUtils::NodeIsType(node, NS_LITERAL_STRING("pre"));
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}
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///////////////////////////////////////////////////////////////////////////
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// IsAddress: true if node an html address node
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//
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PRBool
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nsHTMLEditUtils::IsAddress(nsIDOMNode *node)
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{
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return nsTextEditUtils::NodeIsType(node, NS_LITERAL_STRING("address"));
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}
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///////////////////////////////////////////////////////////////////////////
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// IsImage: true if node an html image node
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//
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PRBool
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nsHTMLEditUtils::IsImage(nsIDOMNode *node)
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{
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return nsTextEditUtils::NodeIsType(node, NS_LITERAL_STRING("img"));
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}
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PRBool
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nsHTMLEditUtils::IsLink(nsIDOMNode *aNode)
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{
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if (!aNode) return PR_FALSE;
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nsCOMPtr<nsIDOMHTMLAnchorElement> anchor = do_QueryInterface(aNode);
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if (anchor)
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{
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nsAutoString tmpText;
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if (NS_SUCCEEDED(anchor->GetHref(tmpText)) && tmpText.get() && tmpText.Length() != 0)
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return PR_TRUE;
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}
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return PR_FALSE;
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}
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PRBool
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nsHTMLEditUtils::IsNamedAnchor(nsIDOMNode *aNode)
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{
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if (!aNode) return PR_FALSE;
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nsCOMPtr<nsIDOMHTMLAnchorElement> anchor = do_QueryInterface(aNode);
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if (anchor)
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{
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nsAutoString tmpText;
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if (NS_SUCCEEDED(anchor->GetName(tmpText)) && tmpText.get() && tmpText.Length() != 0)
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return PR_TRUE;
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}
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return PR_FALSE;
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}
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///////////////////////////////////////////////////////////////////////////
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// IsDiv: true if node an html div node
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//
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PRBool
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nsHTMLEditUtils::IsDiv(nsIDOMNode *node)
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{
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return nsTextEditUtils::NodeIsType(node, NS_LITERAL_STRING("div"));
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}
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///////////////////////////////////////////////////////////////////////////
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// IsMozDiv: true if node an html div node with type = _moz
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//
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PRBool
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nsHTMLEditUtils::IsMozDiv(nsIDOMNode *node)
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{
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if (IsDiv(node) && nsTextEditUtils::HasMozAttr(node)) return PR_TRUE;
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return PR_FALSE;
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}
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///////////////////////////////////////////////////////////////////////////
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// IsMailCite: true if node an html blockquote with type=cite
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//
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PRBool
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nsHTMLEditUtils::IsMailCite(nsIDOMNode *node)
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{
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NS_PRECONDITION(node, "null parent passed to nsHTMLEditUtils::IsMailCite");
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nsCOMPtr<nsIDOMElement> elem = do_QueryInterface(node);
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if (!elem) return PR_FALSE;
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nsAutoString attrName (NS_LITERAL_STRING("type"));
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// don't ask me why, but our html mailcites are id'd by "type=cite"...
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nsAutoString attrVal;
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nsresult res = elem->GetAttribute(attrName, attrVal);
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ToLowerCase(attrVal);
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if (NS_SUCCEEDED(res))
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{
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if (attrVal.Equals(NS_LITERAL_STRING("cite")))
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return PR_TRUE;
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}
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// ... but our plaintext mailcites by "_moz_quote=true". go figure.
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attrName.Assign(NS_LITERAL_STRING("_moz_quote"));
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res = elem->GetAttribute(attrName, attrVal);
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if (NS_SUCCEEDED(res))
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{
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ToLowerCase(attrVal);
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if (attrVal.Equals(NS_LITERAL_STRING("true")))
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return PR_TRUE;
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}
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return PR_FALSE;
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}
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///////////////////////////////////////////////////////////////////////////
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// IsFormWidget: true if node is a form widget of some kind
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//
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PRBool
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nsHTMLEditUtils::IsFormWidget(nsIDOMNode *node)
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{
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NS_PRECONDITION(node, "null node passed to nsHTMLEditUtils::IsFormWidget");
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nsAutoString tag;
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nsEditor::GetTagString(node,tag);
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ToLowerCase(tag);
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if (tag.Equals(NS_LITERAL_STRING("textarea")) ||
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tag.Equals(NS_LITERAL_STRING("select")) ||
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tag.Equals(NS_LITERAL_STRING("button")) ||
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tag.Equals(NS_LITERAL_STRING("input")) )
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{
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return PR_TRUE;
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}
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return PR_FALSE;
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}
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PRBool
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nsHTMLEditUtils::IsDescendantOf(nsIDOMNode *aNode, nsIDOMNode *aParent, PRInt32 *aOffset)
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{
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if (!aNode && !aParent) return PR_FALSE;
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if (aNode == aParent) return PR_FALSE;
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nsCOMPtr<nsIDOMNode> parent, node = do_QueryInterface(aNode);
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nsresult res;
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do
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{
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res = node->GetParentNode(getter_AddRefs(parent));
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if (NS_FAILED(res)) return PR_FALSE;
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if (parent.get() == aParent)
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{
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if (aOffset)
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{
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nsCOMPtr<nsIContent> pCon(do_QueryInterface(parent));
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nsCOMPtr<nsIContent> cCon(do_QueryInterface(node));
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if (pCon && cCon)
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{
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pCon->IndexOf(cCon, *aOffset);
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}
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}
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return PR_TRUE;
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}
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node = parent;
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} while (parent);
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return PR_FALSE;
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}
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PRBool
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nsHTMLEditUtils::IsLeafNode(nsIDOMNode *aNode)
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{
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if (!aNode) return PR_FALSE;
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PRBool hasChildren = PR_FALSE;
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aNode->HasChildNodes(&hasChildren);
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return !hasChildren;
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}
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PRBool
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nsHTMLEditUtils::SupportsAlignAttr(nsIDOMNode * aNode)
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{
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NS_PRECONDITION(aNode, "null node passed to nsHTMLEditUtils::SupportsAlignAttr");
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nsAutoString tag;
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nsEditor::GetTagString(aNode, tag);
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ToLowerCase(tag);
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if (tag.Equals(NS_LITERAL_STRING("hr")) ||
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tag.Equals(NS_LITERAL_STRING("table")) ||
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tag.Equals(NS_LITERAL_STRING("tbody")) ||
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tag.Equals(NS_LITERAL_STRING("tfoot")) ||
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tag.Equals(NS_LITERAL_STRING("thead")) ||
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tag.Equals(NS_LITERAL_STRING("tr")) ||
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tag.Equals(NS_LITERAL_STRING("td")) ||
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tag.Equals(NS_LITERAL_STRING("th")) ||
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tag.Equals(NS_LITERAL_STRING("div")) ||
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tag.Equals(NS_LITERAL_STRING("p")) ||
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tag.Equals(NS_LITERAL_STRING("h1")) ||
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tag.Equals(NS_LITERAL_STRING("h2")) ||
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tag.Equals(NS_LITERAL_STRING("h3")) ||
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tag.Equals(NS_LITERAL_STRING("h4")) ||
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tag.Equals(NS_LITERAL_STRING("h5")) ||
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tag.Equals(NS_LITERAL_STRING("h6"))) {
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return PR_TRUE;
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}
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return PR_FALSE;
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}
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