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content/base/src/nsGenConImageContent.cpp@deefc01c0e14 (annotated)

content/base/src/nsGenConImageContent.cpp

Thu, 15 Jan 2015 21:03:48 +0100

author

Michael Schloh von Bennewitz <michael@schloh.com>

date

Thu, 15 Jan 2015 21:03:48 +0100

branch

TOR_BUG_9701

changeset 11

deefc01c0e14

permissions

-rw-r--r--

Integrate friendly tips from Tor colleagues to make (or not) 4.5 alpha 3;
This includes removal of overloaded (but unused) methods, and addition of
a overlooked call to DataStruct::SetData(nsISupports, uint32_t, bool.)

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	}