LCOV - code coverage report
Current view: directory - content/xbl/src - nsXBLProtoImplField.cpp (source / functions) Found Hit Coverage
Test: app.info Lines: 85 0 0.0 %
Date: 2012-06-02 Functions: 7 0 0.0 %

       1                 : /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
       2                 : /* ***** BEGIN LICENSE BLOCK *****
       3                 :  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
       4                 :  *
       5                 :  * The contents of this file are subject to the Mozilla Public License Version
       6                 :  * 1.1 (the "License"); you may not use this file except in compliance with
       7                 :  * the License. You may obtain a copy of the License at
       8                 :  * http://www.mozilla.org/MPL/
       9                 :  *
      10                 :  * Software distributed under the License is distributed on an "AS IS" basis,
      11                 :  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
      12                 :  * for the specific language governing rights and limitations under the
      13                 :  * License.
      14                 :  *
      15                 :  * The Original Code is Mozilla Communicator client code.
      16                 :  *
      17                 :  * The Initial Developer of the Original Code is
      18                 :  * Netscape Communications Corporation.
      19                 :  * Portions created by the Initial Developer are Copyright (C) 1998
      20                 :  * the Initial Developer. All Rights Reserved.
      21                 :  *
      22                 :  * Contributor(s):
      23                 :  *   David Hyatt <hyatt@netscape.com> (Original Author)
      24                 :  *
      25                 :  * Alternatively, the contents of this file may be used under the terms of
      26                 :  * either of the GNU General Public License Version 2 or later (the "GPL"),
      27                 :  * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
      28                 :  * in which case the provisions of the GPL or the LGPL are applicable instead
      29                 :  * of those above. If you wish to allow use of your version of this file only
      30                 :  * under the terms of either the GPL or the LGPL, and not to allow others to
      31                 :  * use your version of this file under the terms of the MPL, indicate your
      32                 :  * decision by deleting the provisions above and replace them with the notice
      33                 :  * and other provisions required by the GPL or the LGPL. If you do not delete
      34                 :  * the provisions above, a recipient may use your version of this file under
      35                 :  * the terms of any one of the MPL, the GPL or the LGPL.
      36                 :  *
      37                 :  * ***** END LICENSE BLOCK ***** */
      38                 : 
      39                 : #include "nsIAtom.h"
      40                 : #include "nsString.h"
      41                 : #include "jsapi.h"
      42                 : #include "nsIContent.h"
      43                 : #include "nsString.h"
      44                 : #include "nsUnicharUtils.h"
      45                 : #include "nsReadableUtils.h"
      46                 : #include "mozilla/FunctionTimer.h"
      47                 : #include "nsXBLProtoImplField.h"
      48                 : #include "nsIScriptContext.h"
      49                 : #include "nsContentUtils.h"
      50                 : #include "nsIURI.h"
      51                 : #include "nsXBLSerialize.h"
      52                 : #include "nsXBLPrototypeBinding.h"
      53                 : 
      54               0 : nsXBLProtoImplField::nsXBLProtoImplField(const PRUnichar* aName, const PRUnichar* aReadOnly)
      55                 :   : mNext(nsnull),
      56                 :     mFieldText(nsnull),
      57                 :     mFieldTextLength(0),
      58               0 :     mLineNumber(0)
      59                 : {
      60               0 :   MOZ_COUNT_CTOR(nsXBLProtoImplField);
      61               0 :   mName = NS_strdup(aName);  // XXXbz make more sense to use a stringbuffer?
      62                 :   
      63               0 :   mJSAttributes = JSPROP_ENUMERATE;
      64               0 :   if (aReadOnly) {
      65               0 :     nsAutoString readOnly; readOnly.Assign(aReadOnly);
      66               0 :     if (readOnly.LowerCaseEqualsLiteral("true"))
      67               0 :       mJSAttributes |= JSPROP_READONLY;
      68                 :   }
      69               0 : }
      70                 : 
      71                 : 
      72               0 : nsXBLProtoImplField::nsXBLProtoImplField(const bool aIsReadOnly)
      73                 :   : mNext(nsnull),
      74                 :     mFieldText(nsnull),
      75                 :     mFieldTextLength(0),
      76               0 :     mLineNumber(0)
      77                 : {
      78               0 :   MOZ_COUNT_CTOR(nsXBLProtoImplField);
      79                 : 
      80               0 :   mJSAttributes = JSPROP_ENUMERATE;
      81               0 :   if (aIsReadOnly)
      82               0 :     mJSAttributes |= JSPROP_READONLY;
      83               0 : }
      84                 : 
      85               0 : nsXBLProtoImplField::~nsXBLProtoImplField()
      86                 : {
      87               0 :   MOZ_COUNT_DTOR(nsXBLProtoImplField);
      88               0 :   if (mFieldText)
      89               0 :     nsMemory::Free(mFieldText);
      90               0 :   NS_Free(mName);
      91               0 :   NS_CONTENT_DELETE_LIST_MEMBER(nsXBLProtoImplField, this, mNext);
      92               0 : }
      93                 : 
      94                 : void 
      95               0 : nsXBLProtoImplField::AppendFieldText(const nsAString& aText)
      96                 : {
      97               0 :   if (mFieldText) {
      98               0 :     nsDependentString fieldTextStr(mFieldText, mFieldTextLength);
      99               0 :     nsAutoString newFieldText = fieldTextStr + aText;
     100               0 :     PRUnichar* temp = mFieldText;
     101               0 :     mFieldText = ToNewUnicode(newFieldText);
     102               0 :     mFieldTextLength = newFieldText.Length();
     103               0 :     nsMemory::Free(temp);
     104                 :   }
     105                 :   else {
     106               0 :     mFieldText = ToNewUnicode(aText);
     107               0 :     mFieldTextLength = aText.Length();
     108                 :   }
     109               0 : }
     110                 : 
     111                 : nsresult
     112               0 : nsXBLProtoImplField::InstallField(nsIScriptContext* aContext,
     113                 :                                   JSObject* aBoundNode,
     114                 :                                   nsIPrincipal* aPrincipal,
     115                 :                                   nsIURI* aBindingDocURI,
     116                 :                                   bool* aDidInstall) const
     117                 : {
     118                 :   NS_TIME_FUNCTION_MIN(5);
     119               0 :   NS_PRECONDITION(aBoundNode,
     120                 :                   "uh-oh, bound node should NOT be null or bad things will "
     121                 :                   "happen");
     122                 : 
     123               0 :   *aDidInstall = false;
     124                 : 
     125               0 :   if (mFieldTextLength == 0) {
     126               0 :     return NS_OK;
     127                 :   }
     128                 : 
     129                 :   // EvaluateStringWithValue and JS_DefineUCProperty can both trigger GC, so
     130                 :   // protect |result| here.
     131                 :   nsresult rv;
     132                 : 
     133               0 :   nsCAutoString uriSpec;
     134               0 :   aBindingDocURI->GetSpec(uriSpec);
     135                 :   
     136               0 :   JSContext* cx = aContext->GetNativeContext();
     137               0 :   NS_ASSERTION(!::JS_IsExceptionPending(cx),
     138                 :                "Shouldn't get here when an exception is pending!");
     139                 :   
     140                 :   // compile the literal string
     141                 :   bool undefined;
     142               0 :   nsCOMPtr<nsIScriptContext> context = aContext;
     143                 : 
     144               0 :   JSAutoRequest ar(cx);
     145               0 :   jsval result = JSVAL_NULL;
     146               0 :   rv = context->EvaluateStringWithValue(nsDependentString(mFieldText,
     147               0 :                                                           mFieldTextLength), 
     148                 :                                         aBoundNode,
     149                 :                                         aPrincipal, uriSpec.get(),
     150                 :                                         mLineNumber, JSVERSION_LATEST,
     151               0 :                                         &result, &undefined);
     152               0 :   if (NS_FAILED(rv)) {
     153               0 :     return rv;
     154                 :   }
     155                 : 
     156               0 :   if (undefined) {
     157               0 :     result = JSVAL_VOID;
     158                 :   }
     159                 : 
     160                 :   // Define the evaluated result as a JS property
     161               0 :   nsDependentString name(mName);
     162               0 :   if (!::JS_DefineUCProperty(cx, aBoundNode,
     163                 :                              reinterpret_cast<const jschar*>(mName), 
     164                 :                              name.Length(), result, nsnull, nsnull,
     165               0 :                              mJSAttributes)) {
     166               0 :     return NS_ERROR_OUT_OF_MEMORY;
     167                 :   }
     168                 : 
     169               0 :   *aDidInstall = true;
     170               0 :   return NS_OK;
     171                 : }
     172                 : 
     173                 : nsresult
     174               0 : nsXBLProtoImplField::Read(nsIScriptContext* aContext,
     175                 :                           nsIObjectInputStream* aStream)
     176                 : {
     177               0 :   nsAutoString name;
     178               0 :   nsresult rv = aStream->ReadString(name);
     179               0 :   NS_ENSURE_SUCCESS(rv, rv);
     180               0 :   mName = ToNewUnicode(name);
     181                 : 
     182               0 :   rv = aStream->Read32(&mLineNumber);
     183               0 :   NS_ENSURE_SUCCESS(rv, rv);
     184                 : 
     185               0 :   nsAutoString fieldText;
     186               0 :   rv = aStream->ReadString(fieldText);
     187               0 :   NS_ENSURE_SUCCESS(rv, rv);
     188               0 :   mFieldTextLength = fieldText.Length();
     189               0 :   if (mFieldTextLength)
     190               0 :     mFieldText = ToNewUnicode(fieldText);
     191                 : 
     192               0 :   return NS_OK;
     193                 : }
     194                 : 
     195                 : nsresult
     196               0 : nsXBLProtoImplField::Write(nsIScriptContext* aContext,
     197                 :                            nsIObjectOutputStream* aStream)
     198                 : {
     199               0 :   XBLBindingSerializeDetails type = XBLBinding_Serialize_Field;
     200                 : 
     201               0 :   if (mJSAttributes & JSPROP_READONLY) {
     202               0 :     type |= XBLBinding_Serialize_ReadOnly;
     203                 :   }
     204                 : 
     205               0 :   nsresult rv = aStream->Write8(type);
     206               0 :   NS_ENSURE_SUCCESS(rv, rv);
     207               0 :   rv = aStream->WriteWStringZ(mName);
     208               0 :   NS_ENSURE_SUCCESS(rv, rv);
     209               0 :   rv = aStream->Write32(mLineNumber);
     210               0 :   NS_ENSURE_SUCCESS(rv, rv);
     211                 : 
     212               0 :   return aStream->WriteWStringZ(mFieldText ? mFieldText : EmptyString().get());
     213                 : }

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