Back to index

lightning-sunbird  0.9+nobinonly
nsTextEditUtils.cpp
Go to the documentation of this file.
00001 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
00002 /* ***** BEGIN LICENSE BLOCK *****
00003  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
00004  *
00005  * The contents of this file are subject to the Mozilla Public License Version
00006  * 1.1 (the "License"); you may not use this file except in compliance with
00007  * the License. You may obtain a copy of the License at
00008  * http://www.mozilla.org/MPL/
00009  *
00010  * Software distributed under the License is distributed on an "AS IS" basis,
00011  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
00012  * for the specific language governing rights and limitations under the
00013  * License.
00014  *
00015  * The Original Code is mozilla.org code.
00016  *
00017  * The Initial Developer of the Original Code is
00018  * Netscape Communications Corporation.
00019  * Portions created by the Initial Developer are Copyright (C) 1998
00020  * the Initial Developer. All Rights Reserved.
00021  *
00022  * Contributor(s):
00023  *
00024  * Alternatively, the contents of this file may be used under the terms of
00025  * either of the GNU General Public License Version 2 or later (the "GPL"),
00026  * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
00027  * in which case the provisions of the GPL or the LGPL are applicable instead
00028  * of those above. If you wish to allow use of your version of this file only
00029  * under the terms of either the GPL or the LGPL, and not to allow others to
00030  * use your version of this file under the terms of the MPL, indicate your
00031  * decision by deleting the provisions above and replace them with the notice
00032  * and other provisions required by the GPL or the LGPL. If you do not delete
00033  * the provisions above, a recipient may use your version of this file under
00034  * the terms of any one of the MPL, the GPL or the LGPL.
00035  *
00036  * ***** END LICENSE BLOCK ***** */
00037 
00038 #include "nsTextEditUtils.h"
00039 
00040 #include "nsEditor.h"
00041 #include "nsPlaintextEditor.h"
00042 #include "nsEditProperty.h"
00043 
00045 // IsBody: true if node an html body node
00046 //                  
00047 // Would use NodeIsType and the corresponding atom, but
00048 // the atom list isn't generationed in a plaintext-only
00049 // configured build.
00050 PRBool 
00051 nsTextEditUtils::IsBody(nsIDOMNode *node)
00052 {
00053   return nsEditor::NodeIsTypeString(node, NS_LITERAL_STRING("body"));
00054 }
00055 
00056 
00058 // IsBreak: true if node an html break node
00059 //                  
00060 // See previous comment regarding NodeisType
00061 PRBool 
00062 nsTextEditUtils::IsBreak(nsIDOMNode *node)
00063 {
00064   return nsEditor::NodeIsTypeString(node, NS_LITERAL_STRING("br"));
00065 }
00066 
00067 
00069 // IsMozBR: true if node an html br node with type = _moz
00070 //                  
00071 PRBool 
00072 nsTextEditUtils::IsMozBR(nsIDOMNode *node)
00073 {
00074   NS_PRECONDITION(node, "null node passed to nsHTMLEditUtils::IsMozBR");
00075   if (IsBreak(node) && HasMozAttr(node)) return PR_TRUE;
00076   return PR_FALSE;
00077 }
00078 
00079 
00081 // HasMozAttr: true if node has type attribute = _moz
00082 //             (used to indicate the div's and br's we use in
00083 //              mail compose rules)
00084 //                  
00085 PRBool 
00086 nsTextEditUtils::HasMozAttr(nsIDOMNode *node)
00087 {
00088   NS_PRECONDITION(node, "null parent passed to nsHTMLEditUtils::HasMozAttr");
00089   nsCOMPtr<nsIDOMElement> elem = do_QueryInterface(node);
00090   if (elem)
00091   {
00092     nsAutoString typeAttrVal;
00093     nsresult res = elem->GetAttribute(NS_LITERAL_STRING("type"), typeAttrVal);
00094     if (NS_SUCCEEDED(res) && (typeAttrVal.LowerCaseEqualsLiteral("_moz")))
00095       return PR_TRUE;
00096   }
00097   return PR_FALSE;
00098 }
00099 
00100 
00102 // InBody: true if node is a descendant of the body
00103 //                  
00104 PRBool 
00105 nsTextEditUtils::InBody(nsIDOMNode *node, nsIEditor *editor)
00106 {
00107   if (node)
00108   {
00109     nsCOMPtr<nsIDOMElement> rootElement;
00110     editor->GetRootElement(getter_AddRefs(rootElement));
00111 
00112     nsCOMPtr<nsIDOMNode> rootNode = do_QueryInterface(rootElement);
00113     if (!rootNode)
00114       return PR_FALSE;
00115 
00116     nsCOMPtr<nsIDOMNode> tmp;
00117     nsCOMPtr<nsIDOMNode> p = node;
00118     while (p && p != rootNode)
00119     {
00120       if (NS_FAILED(p->GetParentNode(getter_AddRefs(tmp))) || !tmp)
00121         return PR_FALSE;
00122       p = tmp;
00123     }
00124   }
00125   return PR_TRUE;
00126 }
00127 
00129 // nsAutoEditInitRulesTrigger methods
00130 //
00131 nsAutoEditInitRulesTrigger::nsAutoEditInitRulesTrigger( nsPlaintextEditor *aEd, nsresult &aRes) : mEd(aEd), mRes(aRes)
00132 {
00133     if (mEd) mEd->BeginEditorInit();
00134 }
00135 
00136 nsAutoEditInitRulesTrigger::~nsAutoEditInitRulesTrigger()
00137 {
00138     if (mEd) mRes = mEd->EndEditorInit();
00139 }
00140