The Tor Browser / file comparison
comparison: content/base/src/nsGenConImageContent.cpp
content/base/src/nsGenConImageContent.cpp
- branch
- TOR_BUG_9701
- changeset 11
- deefc01c0e14
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| -1:000000000000 | 0:c925e65ad05b |
|---|---|
| 1 | |
| 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 /** | |
| 7 * A fake content node class so that the image frame for | |
| 8 * content: url(foo); | |
| 9 * in CSS can have an nsIImageLoadingContent but use an | |
| 10 * imgIRequest that's already been loaded from the style system. | |
| 11 */ | |
| 12 | |
| 13 #include "nsContentCreatorFunctions.h" | |
| 14 #include "nsXMLElement.h" | |
| 15 #include "nsImageLoadingContent.h" | |
| 16 #include "imgIRequest.h" | |
| 17 #include "mozilla/BasicEvents.h" | |
| 18 #include "mozilla/EventDispatcher.h" | |
| 19 #include "mozilla/EventStates.h" | |
| 20 | |
| 21 using namespace mozilla; | |
| 22 | |
| 23 class nsGenConImageContent MOZ_FINAL : public nsXMLElement, | |
| 24 public nsImageLoadingContent | |
| 25 { | |
| 26 public: | |
| 27 nsGenConImageContent(already_AddRefed<nsINodeInfo>& aNodeInfo) | |
| 28 : nsXMLElement(aNodeInfo) | |
| 29 { | |
| 30 // nsImageLoadingContent starts out broken, so we start out | |
| 31 // suppressed to match it. | |
| 32 AddStatesSilently(NS_EVENT_STATE_SUPPRESSED); | |
| 33 } | |
| 34 | |
| 35 nsresult Init(imgRequestProxy* aImageRequest) | |
| 36 { | |
| 37 // No need to notify, since we have no frame. | |
| 38 return UseAsPrimaryRequest(aImageRequest, false); | |
| 39 } | |
| 40 | |
| 41 // nsIContent overrides | |
| 42 virtual nsresult BindToTree(nsIDocument* aDocument, nsIContent* aParent, | |
| 43 nsIContent* aBindingParent, | |
| 44 bool aCompileEventHandlers); | |
| 45 virtual void UnbindFromTree(bool aDeep, bool aNullParent); | |
| 46 virtual EventStates IntrinsicState() const; | |
| 47 | |
| 48 virtual nsresult PreHandleEvent(EventChainPreVisitor& aVisitor) | |
| 49 { | |
| 50 MOZ_ASSERT(IsInNativeAnonymousSubtree()); | |
| 51 if (aVisitor.mEvent->message == NS_LOAD || | |
| 52 aVisitor.mEvent->message == NS_LOAD_ERROR) { | |
| 53 // Don't propagate the events to the parent. | |
| 54 return NS_OK; | |
| 55 } | |
| 56 return nsXMLElement::PreHandleEvent(aVisitor); | |
| 57 } | |
| 58 | |
| 59 private: | |
| 60 virtual ~nsGenConImageContent(); | |
| 61 | |
| 62 public: | |
| 63 NS_DECL_ISUPPORTS_INHERITED | |
| 64 }; | |
| 65 | |
| 66 NS_IMPL_ISUPPORTS_INHERITED(nsGenConImageContent, | |
| 67 nsXMLElement, | |
| 68 nsIImageLoadingContent, | |
| 69 imgINotificationObserver, | |
| 70 imgIOnloadBlocker) | |
| 71 | |
| 72 nsresult | |
| 73 NS_NewGenConImageContent(nsIContent** aResult, already_AddRefed<nsINodeInfo>&& aNodeInfo, | |
| 74 imgRequestProxy* aImageRequest) | |
| 75 { | |
| 76 NS_PRECONDITION(aImageRequest, "Must have request!"); | |
| 77 nsGenConImageContent *it = new nsGenConImageContent(aNodeInfo); | |
| 78 if (!it) | |
| 79 return NS_ERROR_OUT_OF_MEMORY; | |
| 80 NS_ADDREF(*aResult = it); | |
| 81 nsresult rv = it->Init(aImageRequest); | |
| 82 if (NS_FAILED(rv)) | |
| 83 NS_RELEASE(*aResult); | |
| 84 return rv; | |
| 85 } | |
| 86 | |
| 87 nsGenConImageContent::~nsGenConImageContent() | |
| 88 { | |
| 89 DestroyImageLoadingContent(); | |
| 90 } | |
| 91 | |
| 92 nsresult | |
| 93 nsGenConImageContent::BindToTree(nsIDocument* aDocument, nsIContent* aParent, | |
| 94 nsIContent* aBindingParent, | |
| 95 bool aCompileEventHandlers) | |
| 96 { | |
| 97 nsresult rv; | |
| 98 rv = nsXMLElement::BindToTree(aDocument, aParent, aBindingParent, | |
| 99 aCompileEventHandlers); | |
| 100 NS_ENSURE_SUCCESS(rv, rv); | |
| 101 | |
| 102 nsImageLoadingContent::BindToTree(aDocument, aParent, aBindingParent, | |
| 103 aCompileEventHandlers); | |
| 104 return NS_OK; | |
| 105 } | |
| 106 | |
| 107 void | |
| 108 nsGenConImageContent::UnbindFromTree(bool aDeep, bool aNullParent) | |
| 109 { | |
| 110 nsImageLoadingContent::UnbindFromTree(aDeep, aNullParent); | |
| 111 nsXMLElement::UnbindFromTree(aDeep, aNullParent); | |
| 112 } | |
| 113 | |
| 114 EventStates | |
| 115 nsGenConImageContent::IntrinsicState() const | |
| 116 { | |
| 117 EventStates state = nsXMLElement::IntrinsicState(); | |
| 118 | |
| 119 EventStates imageState = nsImageLoadingContent::ImageState(); | |
| 120 if (imageState.HasAtLeastOneOfStates(NS_EVENT_STATE_BROKEN | NS_EVENT_STATE_USERDISABLED)) { | |
| 121 // We should never be in an error state; if the image fails to load, we | |
| 122 // just go to the suppressed state. | |
| 123 imageState |= NS_EVENT_STATE_SUPPRESSED; | |
| 124 imageState &= ~NS_EVENT_STATE_BROKEN; | |
| 125 } | |
| 126 imageState &= ~NS_EVENT_STATE_LOADING; | |
| 127 return state | imageState; | |
| 128 } |
