зеркало из https://github.com/mozilla/pjs.git
131 строка
4.9 KiB
C++
131 строка
4.9 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Mozilla XForms support.
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*
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* The Initial Developer of the Original Code is
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* IBM Corporation.
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* Portions created by the Initial Developer are Copyright (C) 2004
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Brian Ryner <bryner@brianryner.com>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#ifndef nsXFormsStubElement_h_
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#define nsXFormsStubElement_h_
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#include "nsIXTFElement.h"
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#include "nsIXFormsControlBase.h"
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/**
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* nsRepeatState is used to indicate whether the element is inside a
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* \<repeat\> or \<itemset\> template. If it is, there is no need
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* to refresh the widget bound to the element.
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*
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* eType_Unknown - repeat state has yet to be determined
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* eType_Template - element lives inside the template (an original element
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* from the document that is hidden from the user)
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* eType_GeneratedContent - A generated clone of an element from the template.
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* It is generated as the repeat or itemset processes
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* the nodeset that it is bound to. For every node in
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* the nodeset, the repeat or itemset will go through
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* its template and create a clone for every element
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* in the template. A user will see these elements.
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* eType_NotApplicable - element lives in the DOM and is not contained
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* by a repeat or an itemset
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*/
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enum nsRepeatState {
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eType_Unknown,
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eType_Template,
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eType_GeneratedContent,
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eType_NotApplicable
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};
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/**
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* An implementation of a generic XForms element.
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*/
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class nsXFormsStubElement : public nsIXTFElement
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{
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protected:
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// We need a virtual destructor so that when a subclass does
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// NS_IMPL_ISUPPORTS_INHERITED, our Release() implementation calls the
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// derived class destructor.
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virtual ~nsXFormsStubElement() {}
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/**
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* This is processed when an XForms control or XForms action has been inserted
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* under a parent node AND has been inserted into a document.
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* It checks the ancestors of the element and returns an nsRepeatState
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* depending on the element's place in the document.
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*
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* @param aParent The new parent of the XForms control
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*/
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virtual nsRepeatState UpdateRepeatState(nsIDOMNode *aParent);
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nsRepeatState mRepeatState;
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/**
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* State that tells whether control has a parent or not. This could be
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* false even if the control has a parent. Just means that the element
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* doesn't need to track whether it has a parent or not (i.e. xf:choices)
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*/
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PRPackedBool mHasParent;
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/**
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* State that tells whether control has a document or not. This could be
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* false even if the control has a document. Just means that the element
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* doesn't need to track whether it has a document or not (i.e. xf:choices)
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*/
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PRPackedBool mHasDoc;
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public:
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NS_DECL_ISUPPORTS
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NS_DECL_NSIXTFELEMENT
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/** Constructor */
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nsXFormsStubElement() :
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mRepeatState(eType_Unknown),
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mHasParent(PR_FALSE),
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mHasDoc(PR_FALSE)
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{};
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/**
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* Get/Set the repeat state for the xforms control or action. The repeat
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* state indicates whether the control or action lives inside a context
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* container, a repeat element, an itemset or none of the above.
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*/
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virtual nsRepeatState GetRepeatState();
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virtual void SetRepeatState(nsRepeatState aState);
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};
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/* Factory methods */
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NS_HIDDEN_(nsresult)
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NS_NewXFormsStubElement(nsIXTFElement **aResult);
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#endif
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