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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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/. */
#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(int32_t aIndex, nsAString & aStr) = 0;
/**
* Get the Selected Item's index
*
*/
virtual int32_t 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 uint32_t GetNumberOfOptions() = 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(int32_t aIndex) = 0;
/**
* Notification that the content has been reset
*/
virtual void OnContentReset() = 0;
};
#endif
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