content/base/src/nsGenConImageContent.cpp@6474c204b198 (annotated)
content/base/src/nsGenConImageContent.cpp
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
| michael@0 | 1 | |
| michael@0 | 2 | /* This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 3 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 4 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 5 | |
| michael@0 | 6 | /** |
| michael@0 | 7 | * A fake content node class so that the image frame for |
| michael@0 | 8 | * content: url(foo); |
| michael@0 | 9 | * in CSS can have an nsIImageLoadingContent but use an |
| michael@0 | 10 | * imgIRequest that's already been loaded from the style system. |
| michael@0 | 11 | */ |
| michael@0 | 12 | |
| michael@0 | 13 | #include "nsContentCreatorFunctions.h" |
| michael@0 | 14 | #include "nsXMLElement.h" |
| michael@0 | 15 | #include "nsImageLoadingContent.h" |
| michael@0 | 16 | #include "imgIRequest.h" |
| michael@0 | 17 | #include "mozilla/BasicEvents.h" |
| michael@0 | 18 | #include "mozilla/EventDispatcher.h" |
| michael@0 | 19 | #include "mozilla/EventStates.h" |
| michael@0 | 20 | |
| michael@0 | 21 | using namespace mozilla; |
| michael@0 | 22 | |
| michael@0 | 23 | class nsGenConImageContent MOZ_FINAL : public nsXMLElement, |
| michael@0 | 24 | public nsImageLoadingContent |
| michael@0 | 25 | { |
| michael@0 | 26 | public: |
| michael@0 | 27 | nsGenConImageContent(already_AddRefed<nsINodeInfo>& aNodeInfo) |
| michael@0 | 28 | : nsXMLElement(aNodeInfo) |
| michael@0 | 29 | { |
| michael@0 | 30 | // nsImageLoadingContent starts out broken, so we start out |
| michael@0 | 31 | // suppressed to match it. |
| michael@0 | 32 | AddStatesSilently(NS_EVENT_STATE_SUPPRESSED); |
| michael@0 | 33 | } |
| michael@0 | 34 | |
| michael@0 | 35 | nsresult Init(imgRequestProxy* aImageRequest) |
| michael@0 | 36 | { |
| michael@0 | 37 | // No need to notify, since we have no frame. |
| michael@0 | 38 | return UseAsPrimaryRequest(aImageRequest, false); |
| michael@0 | 39 | } |
| michael@0 | 40 | |
| michael@0 | 41 | // nsIContent overrides |
| michael@0 | 42 | virtual nsresult BindToTree(nsIDocument* aDocument, nsIContent* aParent, |
| michael@0 | 43 | nsIContent* aBindingParent, |
| michael@0 | 44 | bool aCompileEventHandlers); |
| michael@0 | 45 | virtual void UnbindFromTree(bool aDeep, bool aNullParent); |
| michael@0 | 46 | virtual EventStates IntrinsicState() const; |
| michael@0 | 47 | |
| michael@0 | 48 | virtual nsresult PreHandleEvent(EventChainPreVisitor& aVisitor) |
| michael@0 | 49 | { |
| michael@0 | 50 | MOZ_ASSERT(IsInNativeAnonymousSubtree()); |
| michael@0 | 51 | if (aVisitor.mEvent->message == NS_LOAD || |
| michael@0 | 52 | aVisitor.mEvent->message == NS_LOAD_ERROR) { |
| michael@0 | 53 | // Don't propagate the events to the parent. |
| michael@0 | 54 | return NS_OK; |
| michael@0 | 55 | } |
| michael@0 | 56 | return nsXMLElement::PreHandleEvent(aVisitor); |
| michael@0 | 57 | } |
| michael@0 | 58 | |
| michael@0 | 59 | private: |
| michael@0 | 60 | virtual ~nsGenConImageContent(); |
| michael@0 | 61 | |
| michael@0 | 62 | public: |
| michael@0 | 63 | NS_DECL_ISUPPORTS_INHERITED |
| michael@0 | 64 | }; |
| michael@0 | 65 | |
| michael@0 | 66 | NS_IMPL_ISUPPORTS_INHERITED(nsGenConImageContent, |
| michael@0 | 67 | nsXMLElement, |
| michael@0 | 68 | nsIImageLoadingContent, |
| michael@0 | 69 | imgINotificationObserver, |
| michael@0 | 70 | imgIOnloadBlocker) |
| michael@0 | 71 | |
| michael@0 | 72 | nsresult |
| michael@0 | 73 | NS_NewGenConImageContent(nsIContent** aResult, already_AddRefed<nsINodeInfo>&& aNodeInfo, |
| michael@0 | 74 | imgRequestProxy* aImageRequest) |
| michael@0 | 75 | { |
| michael@0 | 76 | NS_PRECONDITION(aImageRequest, "Must have request!"); |
| michael@0 | 77 | nsGenConImageContent *it = new nsGenConImageContent(aNodeInfo); |
| michael@0 | 78 | if (!it) |
| michael@0 | 79 | return NS_ERROR_OUT_OF_MEMORY; |
| michael@0 | 80 | NS_ADDREF(*aResult = it); |
| michael@0 | 81 | nsresult rv = it->Init(aImageRequest); |
| michael@0 | 82 | if (NS_FAILED(rv)) |
| michael@0 | 83 | NS_RELEASE(*aResult); |
| michael@0 | 84 | return rv; |
| michael@0 | 85 | } |
| michael@0 | 86 | |
| michael@0 | 87 | nsGenConImageContent::~nsGenConImageContent() |
| michael@0 | 88 | { |
| michael@0 | 89 | DestroyImageLoadingContent(); |
| michael@0 | 90 | } |
| michael@0 | 91 | |
| michael@0 | 92 | nsresult |
| michael@0 | 93 | nsGenConImageContent::BindToTree(nsIDocument* aDocument, nsIContent* aParent, |
| michael@0 | 94 | nsIContent* aBindingParent, |
| michael@0 | 95 | bool aCompileEventHandlers) |
| michael@0 | 96 | { |
| michael@0 | 97 | nsresult rv; |
| michael@0 | 98 | rv = nsXMLElement::BindToTree(aDocument, aParent, aBindingParent, |
| michael@0 | 99 | aCompileEventHandlers); |
| michael@0 | 100 | NS_ENSURE_SUCCESS(rv, rv); |
| michael@0 | 101 | |
| michael@0 | 102 | nsImageLoadingContent::BindToTree(aDocument, aParent, aBindingParent, |
| michael@0 | 103 | aCompileEventHandlers); |
| michael@0 | 104 | return NS_OK; |
| michael@0 | 105 | } |
| michael@0 | 106 | |
| michael@0 | 107 | void |
| michael@0 | 108 | nsGenConImageContent::UnbindFromTree(bool aDeep, bool aNullParent) |
| michael@0 | 109 | { |
| michael@0 | 110 | nsImageLoadingContent::UnbindFromTree(aDeep, aNullParent); |
| michael@0 | 111 | nsXMLElement::UnbindFromTree(aDeep, aNullParent); |
| michael@0 | 112 | } |
| michael@0 | 113 | |
| michael@0 | 114 | EventStates |
| michael@0 | 115 | nsGenConImageContent::IntrinsicState() const |
| michael@0 | 116 | { |
| michael@0 | 117 | EventStates state = nsXMLElement::IntrinsicState(); |
| michael@0 | 118 | |
| michael@0 | 119 | EventStates imageState = nsImageLoadingContent::ImageState(); |
| michael@0 | 120 | if (imageState.HasAtLeastOneOfStates(NS_EVENT_STATE_BROKEN | NS_EVENT_STATE_USERDISABLED)) { |
| michael@0 | 121 | // We should never be in an error state; if the image fails to load, we |
| michael@0 | 122 | // just go to the suppressed state. |
| michael@0 | 123 | imageState |= NS_EVENT_STATE_SUPPRESSED; |
| michael@0 | 124 | imageState &= ~NS_EVENT_STATE_BROKEN; |
| michael@0 | 125 | } |
| michael@0 | 126 | imageState &= ~NS_EVENT_STATE_LOADING; |
| michael@0 | 127 | return state | imageState; |
| michael@0 | 128 | } |
