The Tor Browser / file comparison
comparison: image/src/ImageURL.h
image/src/ImageURL.h
- branch
- TOR_BUG_9701
- changeset 10
- ac0c01689b40
equal
deleted
inserted
replaced
| -1:000000000000 | 0:7b3ba86a9a1f |
|---|---|
| 1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ | |
| 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 MOZILLA_IMAGELIB_IMAGEURL_H_ | |
| 7 #define MOZILLA_IMAGELIB_IMAGEURL_H_ | |
| 8 | |
| 9 #include "nsIURI.h" | |
| 10 #include "MainThreadUtils.h" | |
| 11 #include "nsNetUtil.h" | |
| 12 | |
| 13 namespace mozilla { | |
| 14 namespace image { | |
| 15 | |
| 16 /** ImageURL | |
| 17 * | |
| 18 * nsStandardURL is not threadsafe, so this class is created to hold only the | |
| 19 * necessary URL data required for image loading and decoding. | |
| 20 * | |
| 21 * Note: Although several APIs have the same or similar prototypes as those | |
| 22 * found in nsIURI/nsStandardURL, the class does not implement nsIURI. This is | |
| 23 * intentional; functionality is limited, and is only useful for imagelib code. | |
| 24 * By not implementing nsIURI, external code cannot unintentionally be given an | |
| 25 * nsIURI pointer with this limited class behind it; instead, conversion to a | |
| 26 * fully implemented nsIURI is required (e.g. through NS_NewURI). | |
| 27 */ | |
| 28 class ImageURL | |
| 29 { | |
| 30 public: | |
| 31 explicit ImageURL(nsIURI* aURI) { | |
| 32 MOZ_ASSERT(NS_IsMainThread(), "Cannot use nsIURI off main thread!"); | |
| 33 aURI->GetSpec(mSpec); | |
| 34 aURI->GetScheme(mScheme); | |
| 35 aURI->GetRef(mRef); | |
| 36 } | |
| 37 | |
| 38 NS_INLINE_DECL_THREADSAFE_REFCOUNTING(mozilla::image::ImageURL) | |
| 39 | |
| 40 nsresult GetSpec(nsACString &result) { | |
| 41 result = mSpec; | |
| 42 return NS_OK; | |
| 43 } | |
| 44 | |
| 45 nsresult GetScheme(nsACString &result) { | |
| 46 result = mScheme; | |
| 47 return NS_OK; | |
| 48 } | |
| 49 | |
| 50 nsresult SchemeIs(const char *scheme, bool *result) | |
| 51 { | |
| 52 NS_PRECONDITION(scheme, "scheme is null"); | |
| 53 NS_PRECONDITION(result, "result is null"); | |
| 54 | |
| 55 *result = mScheme.Equals(scheme); | |
| 56 return NS_OK; | |
| 57 } | |
| 58 | |
| 59 nsresult GetRef(nsACString &result) { | |
| 60 result = mRef; | |
| 61 return NS_OK; | |
| 62 } | |
| 63 | |
| 64 already_AddRefed<nsIURI> ToIURI() { | |
| 65 MOZ_ASSERT(NS_IsMainThread(), | |
| 66 "Convert to nsIURI on main thread only; it is not threadsafe."); | |
| 67 nsCOMPtr<nsIURI> newURI; | |
| 68 NS_NewURI(getter_AddRefs(newURI), mSpec); | |
| 69 return newURI.forget(); | |
| 70 } | |
| 71 | |
| 72 nsresult Equals(nsIURI *otherURI, bool *result) { | |
| 73 nsAutoCString otherSpec; | |
| 74 otherURI->GetSpec(otherSpec); | |
| 75 *result = mSpec.Equals(otherSpec); | |
| 76 return NS_OK; | |
| 77 } | |
| 78 | |
| 79 private: | |
| 80 // Since this is a basic storage class, no duplication of spec parsing is | |
| 81 // included in the functionality. Instead, the class depends upon the | |
| 82 // parsing implementation in the nsIURI class used in object construction. | |
| 83 // This means each field is stored separately, but since only a few are | |
| 84 // required, this small memory tradeoff for threadsafe usage should be ok. | |
| 85 nsAutoCString mSpec; | |
| 86 nsAutoCString mScheme; | |
| 87 nsAutoCString mRef; | |
| 88 }; | |
| 89 | |
| 90 } // namespace image | |
| 91 } // namespace mozilla | |
| 92 | |
| 93 #endif // MOZILLA_IMAGELIB_IMAGEURL_H_ |
