зеркало из https://github.com/mozilla/gecko-dev.git
535 строки
14 KiB
C++
535 строки
14 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the 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 Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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*/
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#include "nsHTMLEditUtils.h"
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#include "nsString.h"
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#include "nsEditor.h"
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#include "nsIDOMNode.h"
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#include "nsIDOMNodeList.h"
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/********************************************************
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* helper methods from nsTextEditRules
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********************************************************/
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///////////////////////////////////////////////////////////////////////////
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// IsBody: true if node an html body node
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//
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PRBool
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nsHTMLEditUtils::IsBody(nsIDOMNode *node)
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{
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NS_PRECONDITION(node, "null node passed to nsHTMLEditUtils::IsBody");
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nsAutoString tag;
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nsEditor::GetTagString(node,tag);
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tag.ToLowerCase();
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if (tag.EqualsWithConversion("body"))
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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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// IsBreak: true if node an html break node
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//
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PRBool
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nsHTMLEditUtils::IsBreak(nsIDOMNode *node)
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{
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NS_PRECONDITION(node, "null node passed to nsHTMLEditUtils::IsBreak");
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nsAutoString tag;
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nsEditor::GetTagString(node,tag);
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tag.ToLowerCase();
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if (tag.EqualsWithConversion("br"))
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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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// IsBreak: true if node an html break node
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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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NS_PRECONDITION(node, "null node passed to nsHTMLEditUtils::IsBig");
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nsAutoString tag;
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nsEditor::GetTagString(node,tag);
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tag.ToLowerCase();
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if (tag.EqualsWithConversion("big"))
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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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// IsBreak: true if node an html break node
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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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NS_PRECONDITION(node, "null node passed to nsHTMLEditUtils::IsSmall");
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nsAutoString tag;
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nsEditor::GetTagString(node,tag);
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tag.ToLowerCase();
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if (tag.EqualsWithConversion("small"))
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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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// IsMozBR: true if node an html br node with type = _moz
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//
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PRBool
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nsHTMLEditUtils::IsMozBR(nsIDOMNode *node)
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{
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NS_PRECONDITION(node, "null node passed to nsHTMLEditUtils::IsMozBR");
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if (IsBreak(node) && HasMozAttr(node)) return PR_TRUE;
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return PR_FALSE;
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}
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///////////////////////////////////////////////////////////////////////////
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// HasMozAttr: true if node has type attribute = _moz
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// (used to indicate the div's and br's we use in
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// mail compose rules)
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//
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PRBool
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nsHTMLEditUtils::HasMozAttr(nsIDOMNode *node)
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{
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NS_PRECONDITION(node, "null parent passed to nsHTMLEditUtils::HasMozAttr");
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nsCOMPtr<nsIDOMElement> elem = do_QueryInterface(node);
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if (elem)
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{
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nsAutoString typeAttrName; typeAttrName.AssignWithConversion("type");
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nsAutoString typeAttrVal;
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nsresult res = elem->GetAttribute(typeAttrName, typeAttrVal);
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typeAttrVal.ToLowerCase();
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if (NS_SUCCEEDED(res) && (typeAttrVal.EqualsWithConversion("_moz")))
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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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// InBody: true if node is a descendant of the body
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//
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PRBool
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nsHTMLEditUtils::InBody(nsIDOMNode *node, nsIEditor *editor)
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{
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if ( node )
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{
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nsCOMPtr<nsIDOMElement> bodyElement;
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nsresult res = editor->GetRootElement(getter_AddRefs(bodyElement));
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if (NS_FAILED(res) || !bodyElement)
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return res?res:NS_ERROR_NULL_POINTER;
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nsCOMPtr<nsIDOMNode> bodyNode = do_QueryInterface(bodyElement);
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nsCOMPtr<nsIDOMNode> tmp;
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nsCOMPtr<nsIDOMNode> p = node;
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while (p && p!= bodyNode)
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{
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if (NS_FAILED(p->GetParentNode(getter_AddRefs(tmp))) || !tmp)
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return PR_FALSE;
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p = tmp;
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}
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}
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return PR_TRUE;
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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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tag.ToLowerCase();
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if ( (tag.EqualsWithConversion("h1")) ||
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(tag.EqualsWithConversion("h2")) ||
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(tag.EqualsWithConversion("h3")) ||
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(tag.EqualsWithConversion("h4")) ||
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(tag.EqualsWithConversion("h5")) ||
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(tag.EqualsWithConversion("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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NS_PRECONDITION(node, "null parent passed to nsHTMLEditUtils::IsParagraph");
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nsAutoString tag;
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nsEditor::GetTagString(node,tag);
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tag.ToLowerCase();
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if (tag.EqualsWithConversion("p"))
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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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// 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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tag.ToLowerCase();
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if (tag.EqualsWithConversion("li") ||
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tag.EqualsWithConversion("dd") ||
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tag.EqualsWithConversion("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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// 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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NS_PRECONDITION(node, "null node passed to nsHTMLEditor::IsTable");
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nsAutoString tag;
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nsEditor::GetTagString(node,tag);
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if (tag.EqualsWithConversion("table"))
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return PR_TRUE;
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return PR_FALSE;
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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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NS_PRECONDITION(node, "null parent passed to nsHTMLEditUtils::IsTableRow");
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nsAutoString tag;
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nsEditor::GetTagString(node,tag);
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tag.ToLowerCase();
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if (tag.EqualsWithConversion("tr"))
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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::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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tag.ToLowerCase();
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if (tag.EqualsWithConversion("td") || tag.EqualsWithConversion("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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// 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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tag.ToLowerCase();
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if ( (tag.EqualsWithConversion("dl")) ||
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(tag.EqualsWithConversion("ol")) ||
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(tag.EqualsWithConversion("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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NS_PRECONDITION(node, "null parent passed to nsHTMLEditUtils::IsOrderedList");
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nsAutoString tag;
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nsEditor::GetTagString(node,tag);
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tag.ToLowerCase();
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if (tag.EqualsWithConversion("ol"))
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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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// 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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NS_PRECONDITION(node, "null parent passed to nsHTMLEditUtils::IsUnorderedList");
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nsAutoString tag;
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nsEditor::GetTagString(node,tag);
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tag.ToLowerCase();
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if (tag.EqualsWithConversion("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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// IsDefinitionList: true if node an html definition list
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//
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PRBool
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nsHTMLEditUtils::IsDefinitionList(nsIDOMNode *node)
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{
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NS_PRECONDITION(node, "null parent passed to nsHTMLEditUtils::IsDefinitionList");
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nsAutoString tag;
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nsEditor::GetTagString(node,tag);
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tag.ToLowerCase();
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if (tag.EqualsWithConversion("dl"))
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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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// 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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NS_PRECONDITION(node, "null parent passed to nsHTMLEditUtils::IsBlockquote");
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nsAutoString tag;
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nsEditor::GetTagString(node,tag);
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tag.ToLowerCase();
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if (tag.EqualsWithConversion("blockquote"))
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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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// 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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NS_PRECONDITION(node, "null parent passed to nsHTMLEditUtils::IsPre");
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nsAutoString tag;
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nsEditor::GetTagString(node,tag);
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tag.ToLowerCase();
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if (tag.EqualsWithConversion("pre"))
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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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// 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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NS_PRECONDITION(node, "null parent passed to nsHTMLEditUtils::IsAddress");
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nsAutoString tag;
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nsEditor::GetTagString(node,tag);
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tag.ToLowerCase();
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if (tag.EqualsWithConversion("address"))
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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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// IsAnchor: true if node an html anchor node
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//
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PRBool
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nsHTMLEditUtils::IsAnchor(nsIDOMNode *node)
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{
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NS_PRECONDITION(node, "null parent passed to nsHTMLEditUtils::IsAnchor");
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nsAutoString tag;
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nsEditor::GetTagString(node,tag);
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tag.ToLowerCase();
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if (tag.EqualsWithConversion("a"))
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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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// 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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NS_PRECONDITION(node, "null node passed to nsHTMLEditUtils::IsImage");
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nsAutoString tag;
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nsEditor::GetTagString(node,tag);
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tag.ToLowerCase();
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if (tag.EqualsWithConversion("img"))
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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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// 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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NS_PRECONDITION(node, "null parent passed to nsHTMLEditUtils::IsDiv");
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nsAutoString tag;
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nsEditor::GetTagString(node,tag);
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tag.ToLowerCase();
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if (tag.EqualsWithConversion("div"))
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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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// IsNormalDiv: true if node an html div node, without type = _moz
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//
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PRBool
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nsHTMLEditUtils::IsNormalDiv(nsIDOMNode *node)
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{
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if (IsDiv(node) && !nsHTMLEditUtils::HasMozAttr(node)) return PR_TRUE;
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return PR_FALSE;
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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) && 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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if (IsBlockquote(node))
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{
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nsCOMPtr<nsIDOMElement> bqElem = do_QueryInterface(node);
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nsAutoString typeAttrName; typeAttrName.AssignWithConversion("type");
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nsAutoString typeAttrVal;
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nsresult res = bqElem->GetAttribute(typeAttrName, typeAttrVal);
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typeAttrVal.ToLowerCase();
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if (NS_SUCCEEDED(res))
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{
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if (typeAttrVal.EqualsWithConversion("cite", PR_TRUE, 4))
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return PR_TRUE;
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}
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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)
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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) return PR_TRUE;
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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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