The Tor Browser / file comparison
comparison: content/xul/document/src/nsForwardReference.h
content/xul/document/src/nsForwardReference.h
- branch
- TOR_BUG_9701
- changeset 8
- 97036ab72558
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| -1:000000000000 | 0:3191c5ccccde |
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| 1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ | |
| 2 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 3 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 5 | |
| 6 #ifndef nsForwardReference_h__ | |
| 7 #define nsForwardReference_h__ | |
| 8 | |
| 9 class nsForwardReference | |
| 10 { | |
| 11 protected: | |
| 12 nsForwardReference() {} | |
| 13 | |
| 14 public: | |
| 15 virtual ~nsForwardReference() {} | |
| 16 | |
| 17 /** | |
| 18 * Priority codes returned from GetPhase() | |
| 19 */ | |
| 20 enum Phase { | |
| 21 /** A dummy marker, used to indicate unstarted resolution */ | |
| 22 eStart, | |
| 23 | |
| 24 /** The initial pass, after which the content model will be | |
| 25 fully built */ | |
| 26 eConstruction, | |
| 27 | |
| 28 /** A second pass, after which all 'magic attribute' hookup | |
| 29 will have been performed */ | |
| 30 eHookup, | |
| 31 | |
| 32 /** A dummy marker, used in kPasses to indicate termination */ | |
| 33 eDone | |
| 34 }; | |
| 35 | |
| 36 /** | |
| 37 * Forward references are categorized by 'priority', and all | |
| 38 * forward references in a higher priority are resolved before any | |
| 39 * reference in a lower priority. This variable specifies this | |
| 40 * ordering. The last Priority is guaranteed to be eDone. | |
| 41 */ | |
| 42 static const Phase kPasses[]; | |
| 43 | |
| 44 /** | |
| 45 * Get the state in which the forward reference should be resolved. | |
| 46 * 'eConstruction' references are all resolved before 'eHookup' references | |
| 47 * are resolved. | |
| 48 * | |
| 49 * @return the Phase in which the reference needs to be resolved | |
| 50 */ | |
| 51 virtual Phase GetPhase() = 0; | |
| 52 | |
| 53 /** | |
| 54 * Result codes returned from Resolve() | |
| 55 */ | |
| 56 enum Result { | |
| 57 /** Resolution succeeded, I'm done. */ | |
| 58 eResolve_Succeeded, | |
| 59 | |
| 60 /** Couldn't resolve, but try me later. */ | |
| 61 eResolve_Later, | |
| 62 | |
| 63 /** Something bad happened, don't try again. */ | |
| 64 eResolve_Error | |
| 65 }; | |
| 66 | |
| 67 /** | |
| 68 * Attempt to resolve the forward reference. | |
| 69 * | |
| 70 * @return a Result that tells the resolver how to treat | |
| 71 * the reference. | |
| 72 */ | |
| 73 virtual Result Resolve() = 0; | |
| 74 }; | |
| 75 | |
| 76 #endif // nsForwardReference_h__ |
