LCOV - app.info - layout/base/nsAutoLayoutPhase.h

LCOV - code coverage report
| Current view: | directory - layout/base - nsAutoLayoutPhase.h (source / functions) |  | Found | Hit | Coverage |
| Test: | app.info | Lines: | 32 | 0 | 0.0 %
| Date: | 2012-07-07 | Functions: | 4 | 0 | 0.0 %

           1                 : /* ***** BEGIN LICENSE BLOCK *****
           2                 :  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
           3                 :  *
           4                 :  * The contents of this file are subject to the Mozilla Public License Version
           5                 :  * 1.1 (the "License"); you may not use this file except in compliance with
           6                 :  * the License. You may obtain a copy of the License at
           7                 :  * http://www.mozilla.org/MPL/
           8                 :  *
           9                 :  * Software distributed under the License is distributed on an "AS IS" basis,
          10                 :  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
          11                 :  * for the specific language governing rights and limitations under the
          12                 :  * License.
          13                 :  *
          14                 :  * The Original Code is mozilla.org code.
          15                 :  *
          16                 :  * The Initial Developer of the Original Code is
          17                 :  * the Mozilla Foundation.
          18                 :  * Portions created by the Initial Developer are Copyright (C) 2006
          19                 :  * the Initial Developer. All Rights Reserved.
          20                 :  *
          21                 :  * Contributor(s):
          22                 :  *   L. David Baron <dbaron@dbaron.org>, Mozilla Corporation (original author)
          23                 :  *   Timothy Nikkel <tnikkel@gmail.com>
          24                 :  *   Boris Zbarsky <bzbarsky@mit.edu>
          25                 :  *
          26                 :  * Alternatively, the contents of this file may be used under the terms of
          27                 :  * either the GNU General Public License Version 2 or later (the "GPL"), or
          28                 :  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
          29                 :  * in which case the provisions of the GPL or the LGPL are applicable instead
          30                 :  * of those above. If you wish to allow use of your version of this file only
          31                 :  * under the terms of either the GPL or the LGPL, and not to allow others to
          32                 :  * use your version of this file under the terms of the MPL, indicate your
          33                 :  * decision by deleting the provisions above and replace them with the notice
          34                 :  * and other provisions required by the GPL or the LGPL. If you do not delete
          35                 :  * the provisions above, a recipient may use your version of this file under
          36                 :  * the terms of any one of the MPL, the GPL or the LGPL.
          37                 :  *
          38                 :  * ***** END LICENSE BLOCK ***** */
          39                 :
          40                 : #ifndef nsAutoLayoutPhase_h
          41                 : #define nsAutoLayoutPhase_h
          42                 :
          43                 : #ifdef DEBUG
          44                 :
          45                 : #include "nsPresContext.h"
          46                 : #include "nsContentUtils.h"
          47                 :
          48                 : struct nsAutoLayoutPhase {
          49               0 :   nsAutoLayoutPhase(nsPresContext* aPresContext, nsLayoutPhase aPhase)
          50               0 :     : mPresContext(aPresContext), mPhase(aPhase), mCount(0)
          51                 :   {
          52               0 :     Enter();
          53               0 :   }
          54                 :
          55               0 :   ~nsAutoLayoutPhase()
          56                 :   {
          57               0 :     Exit();
          58               0 :     NS_ASSERTION(mCount == 0, "imbalanced");
          59               0 :   }
          60                 :
          61               0 :   void Enter()
          62                 :   {
          63               0 :     switch (mPhase) {
          64                 :       case eLayoutPhase_Paint:
          65               0 :         NS_ASSERTION(mPresContext->mLayoutPhaseCount[eLayoutPhase_Paint] == 0,
          66                 :                      "recurring into paint");
          67               0 :         NS_ASSERTION(mPresContext->mLayoutPhaseCount[eLayoutPhase_Reflow] == 0,
          68                 :                      "painting in the middle of reflow");
          69               0 :         NS_ASSERTION(mPresContext->mLayoutPhaseCount[eLayoutPhase_FrameC] == 0,
          70                 :                      "painting in the middle of frame construction");
          71               0 :         break;
          72                 :       case eLayoutPhase_Reflow:
          73               0 :         NS_ASSERTION(mPresContext->mLayoutPhaseCount[eLayoutPhase_Paint] == 0,
          74                 :                      "reflowing in the middle of a paint");
          75               0 :         NS_ASSERTION(mPresContext->mLayoutPhaseCount[eLayoutPhase_Reflow] == 0,
          76                 :                      "recurring into reflow");
          77               0 :         NS_ASSERTION(mPresContext->mLayoutPhaseCount[eLayoutPhase_FrameC] == 0,
          78                 :                      "reflowing in the middle of frame construction");
          79               0 :         break;
          80                 :       case eLayoutPhase_FrameC:
          81               0 :         NS_ASSERTION(mPresContext->mLayoutPhaseCount[eLayoutPhase_Paint] == 0,
          82                 :                      "constructing frames in the middle of a paint");
          83               0 :         NS_ASSERTION(mPresContext->mLayoutPhaseCount[eLayoutPhase_Reflow] == 0,
          84                 :                      "constructing frames in the middle of reflow");
          85               0 :         NS_ASSERTION(mPresContext->mLayoutPhaseCount[eLayoutPhase_FrameC] == 0,
          86                 :                      "recurring into frame construction");
          87               0 :         NS_ASSERTION(!nsContentUtils::IsSafeToRunScript(),
          88                 :                      "constructing frames and scripts are not blocked");
          89               0 :         break;
          90                 :       default:
          91               0 :         break;
          92                 :     }
          93               0 :     ++(mPresContext->mLayoutPhaseCount[mPhase]);
          94               0 :     ++mCount;
          95               0 :   }
          96                 :
          97               0 :   void Exit()
          98                 :   {
          99               0 :     NS_ASSERTION(mCount > 0 && mPresContext->mLayoutPhaseCount[mPhase] > 0,
         100                 :                  "imbalanced");
         101               0 :     --(mPresContext->mLayoutPhaseCount[mPhase]);
         102               0 :     --mCount;
         103               0 :   }
         104                 :
         105                 : private:
         106                 :   nsPresContext* mPresContext;
         107                 :   nsLayoutPhase mPhase;
         108                 :   PRUint32 mCount;
         109                 : };
         110                 :
         111                 : #define AUTO_LAYOUT_PHASE_ENTRY_POINT(pc_, phase_) \
         112                 :   nsAutoLayoutPhase autoLayoutPhase((pc_), (eLayoutPhase_##phase_))
         113                 : #define LAYOUT_PHASE_TEMP_EXIT() \
         114                 :   PR_BEGIN_MACRO \
         115                 :     autoLayoutPhase.Exit(); \
         116                 :   PR_END_MACRO
         117                 : #define LAYOUT_PHASE_TEMP_REENTER() \
         118                 :   PR_BEGIN_MACRO \
         119                 :     autoLayoutPhase.Enter(); \
         120                 :   PR_END_MACRO
         121                 :
         122                 : #else
         123                 :
         124                 : #define AUTO_LAYOUT_PHASE_ENTRY_POINT(pc_, phase_) \
         125                 :   PR_BEGIN_MACRO PR_END_MACRO
         126                 : #define LAYOUT_PHASE_TEMP_EXIT() \
         127                 :   PR_BEGIN_MACRO PR_END_MACRO
         128                 : #define LAYOUT_PHASE_TEMP_REENTER() \
         129                 :   PR_BEGIN_MACRO PR_END_MACRO
         130                 :
         131                 : #endif
         132                 :
         133                 : #endif // nsAutoLayoutPhase_h

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