pjs/layout/forms/nsIListControlFrame.h

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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
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* ***** END LICENSE BLOCK ***** */
#ifndef nsIListControlFrame_h___
#define nsIListControlFrame_h___
#include "nsQueryFrame.h"
#include "nsFont.h"
class nsAString;
class nsIContent;
/**
* nsIListControlFrame is the interface for frame-based listboxes.
*/
class nsIListControlFrame : public nsQueryFrame
{
public:
NS_DECL_QUERYFRAME_TARGET(nsIListControlFrame)
/**
* Sets the ComboBoxFrame
*
*/
virtual void SetComboboxFrame(nsIFrame* aComboboxFrame) = 0;
/**
* Get the display string for an item
*/
virtual void GetOptionText(PRInt32 aIndex, nsAString & aStr) = 0;
/**
* Get the Selected Item's index
*
*/
virtual PRInt32 GetSelectedIndex() = 0;
/**
* Return current option. The current option is the option displaying
* the focus ring when the listbox is focused.
*/
virtual already_AddRefed<nsIContent> GetCurrentOption() = 0;
/**
* Initiates mouse capture for the listbox
*
*/
virtual void CaptureMouseEvents(bool aGrabMouseEvents) = 0;
/**
* Returns the height of a single row in the list. This is the
* maximum of the heights of all the options/optgroups.
*/
virtual nscoord GetHeightOfARow() = 0;
/**
* Returns the number of options in the listbox
*/
virtual PRInt32 GetNumberOfOptions() = 0;
/**
*
*/
virtual void SyncViewWithFrame() = 0;
/**
* Called by combobox when it's about to drop down
*/
virtual void AboutToDropDown() = 0;
/**
* Called by combobox when it's about to roll up
*/
virtual void AboutToRollup() = 0;
/**
* Fire on change (used by combobox)
*/
virtual void FireOnChange() = 0;
/**
* Tell the selected list to roll up and ensure that the proper index is
* selected, possibly firing onChange if the index has changed
*
* @param aIndex the index to actually select
*/
virtual void ComboboxFinish(PRInt32 aIndex) = 0;
/**
* Notification that the content has been reset
*/
virtual void OnContentReset() = 0;
};
#endif