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nsIForm.h
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2006-05-08
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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either of the GNU General Public License Version 2 or later (the "GPL"),
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#ifndef nsIForm_h___
#define nsIForm_h___
#include "nsISupports.h"
#include "nsAString.h"
class nsIFormControl;
class nsIDOMHTMLInputElement;
class nsIRadioVisitor;
class nsISimpleEnumerator;
class nsIURI;
#define NS_FORM_METHOD_GET 0
#define NS_FORM_METHOD_POST 1
#define NS_FORM_ENCTYPE_URLENCODED 0
#define NS_FORM_ENCTYPE_MULTIPART 1
#define NS_FORM_ENCTYPE_TEXTPLAIN 2
// IID for the nsIFormManager interface
#define NS_IFORM_IID \
{ 0xb7e94510, 0x4c19, 0x11d2, \
{ 0x80, 0x3f, 0x0, 0x60, 0x8, 0x15, 0xa7, 0x91 } }
/**
* This interface provides a complete set of methods dealing with
* elements which belong to a form element. When nsIDOMHTMLCollection
* allows write operations
*/
class nsIForm : public nsISupports
{
public:
NS_DEFINE_STATIC_IID_ACCESSOR(NS_IFORM_IID)
/**
* Add an element to end of this form's list of elements
*
* @param aElement the element to add
* @return NS_OK if the element was successfully added
*/
NS_IMETHOD AddElement(nsIFormControl* aElement) = 0;
/**
* Add an element to the lookup table mainted by the form.
*
* We can't fold this method into AddElement() because when
* AddElement() is called, the form control has no
* attributes. The name or id attributes of the form control
* are used as a key into the table.
*/
NS_IMETHOD AddElementToTable(nsIFormControl* aElement,
const nsAString& aName) = 0;
/**
* Get the element at a specified index position in form.elements
*
* @param aIndex the index
* @param aElement the element at that index
* @return NS_OK if there was an element at that position, -1 otherwise
*/
NS_IMETHOD GetElementAt(PRInt32 aIndex, nsIFormControl** aElement) const = 0;
/**
* Get the number of elements in form.elements
*
* @param aCount the number of elements
* @return NS_OK if there was an element at that position, -1 otherwise
*/
NS_IMETHOD GetElementCount(PRUint32* aCount) const = 0;
/**
* Remove an element from this form's list of elements
*
* @param aElement the element to remove
* @return NS_OK if the element was successfully removed.
*/
NS_IMETHOD RemoveElement(nsIFormControl* aElement) = 0;
/**
* Remove an element from the lookup table mainted by the form.
* We can't fold this method into RemoveElement() because when
* RemoveElement() is called it doesn't know if the element is
* removed because the id attribute has changed, or bacause the
* name attribute has changed.
*
* @param aElement the element to remove
* @param aName the name or id of the element to remove
* @return NS_OK if the element was successfully removed.
*/
NS_IMETHOD RemoveElementFromTable(nsIFormControl* aElement,
const nsAString& aName) = 0;
/**
* Resolve a name in the scope of the form object, this means find
* form controls in this form with the correct value in the name
* attribute.
*
* @param aElement the element to remove
* @param aName the name or id of the element to remove
* @return NS_OK if the element was successfully removed.
*/
NS_IMETHOD ResolveName(const nsAString& aName,
nsISupports **aResult) = 0;
/**
* Get the index of the given control within form.elements.
* @param aControl the control to find the index of
* @param aIndex the index [OUT]
*/
NS_IMETHOD IndexOfControl(nsIFormControl* aControl, PRInt32* aIndex) = 0;
/**
* Get an enumeration that goes through all controls, including images and
* that ilk
* @param aEnum the enumeration [OUT]
*/
NS_IMETHOD GetControlEnumerator(nsISimpleEnumerator** aEnum) = 0;
/**
* Flag the form to know that a button or image triggered scripted form
* submission. In that case the form will defer the submission until the
* script handler returns and the return value is known.
*/
NS_IMETHOD OnSubmitClickBegin() = 0;
NS_IMETHOD OnSubmitClickEnd() = 0;
/**
* Flush a possible pending submission. If there was a scripted submission
* triggered by a button or image, the submission was defered. This method
* forces the pending submission to be submitted. (happens when the handler
* returns false or there is an action/target change in the script)
*/
NS_IMETHOD FlushPendingSubmission() = 0;
/**
* Forget a possible pending submission. Same as above but this time we
* get rid of the pending submission cause the handler returned true
* so we will rebuild the submission with the name/value of the triggering
* element
*/
NS_IMETHOD ForgetPendingSubmission() = 0;
/**
* Get the full URL to submit to. Do not submit if the returned URL is null.
*
* @param aActionURL the full, unadulterated URL you'll be submitting to [OUT]
*/
NS_IMETHOD GetActionURL(nsIURI** aActionURL) = 0;
};
#endif /* nsIForm_h___ */