зеркало из https://github.com/mozilla/gecko-dev.git
71 строка
2.2 KiB
C++
71 строка
2.2 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
|
|
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
/*
|
|
* interface for rendering objects that manually create subtrees of
|
|
* anonymous content
|
|
*/
|
|
|
|
#ifndef nsIAnonymousContentCreator_h___
|
|
#define nsIAnonymousContentCreator_h___
|
|
|
|
#include "mozilla/ComputedStyle.h"
|
|
|
|
#include "nsQueryFrame.h"
|
|
#include "nsTArrayForwardDeclare.h"
|
|
|
|
class nsIContent;
|
|
class nsIFrame;
|
|
|
|
/**
|
|
* Any source for anonymous content can implement this interface to provide it.
|
|
* HTML frames like nsFileControlFrame currently use this.
|
|
*
|
|
* @see nsCSSFrameConstructor
|
|
*/
|
|
class nsIAnonymousContentCreator
|
|
{
|
|
public:
|
|
NS_DECL_QUERYFRAME_TARGET(nsIAnonymousContentCreator)
|
|
|
|
struct ContentInfo {
|
|
explicit ContentInfo(nsIContent* aContent)
|
|
: mContent(aContent)
|
|
{}
|
|
|
|
nsIContent* mContent;
|
|
};
|
|
|
|
/**
|
|
* Creates "native" anonymous content and adds the created content to
|
|
* the aElements array. None of the returned elements can be nullptr.
|
|
*
|
|
* If the anonymous content creator sets the editable flag on some
|
|
* of the elements that it creates, the flag will be applied to the node
|
|
* upon being bound to the document.
|
|
*
|
|
* @note The returned elements are owned by this object. This object is
|
|
* responsible for calling UnbindFromTree on the elements it returned
|
|
* from CreateAnonymousContent when appropriate (i.e. before releasing
|
|
* them).
|
|
*/
|
|
virtual nsresult CreateAnonymousContent(nsTArray<ContentInfo>& aElements) = 0;
|
|
|
|
/**
|
|
* Appends "native" anonymous children created by CreateAnonymousContent()
|
|
* to the given content list depending on the filter.
|
|
*
|
|
* @see nsIContent::GetChildren for set of values used for filter. Currently,
|
|
* eSkipPlaceholderContent is the only flag that any implementation of
|
|
* this method heeds.
|
|
*/
|
|
virtual void AppendAnonymousContentTo(nsTArray<nsIContent*>& aElements,
|
|
uint32_t aFilter) = 0;
|
|
};
|
|
|
|
#endif
|
|
|