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136 lines
3.6 KiB
C++
136 lines
3.6 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.0 (the "NPL"); you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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#ifndef nsIComboBox_h__
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#define nsIComboBox_h__
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#include "nsIListWidget.h"
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#include "nsString.h"
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// {961085F6-BD28-11d1-97EF-00609703C14E}
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#define NS_ICOMBOBOX_IID \
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{ 0x961085f6, 0xbd28, 0x11d1, { 0x97, 0xef, 0x0, 0x60, 0x97, 0x3, 0xc1, 0x4e } }
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/**
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* Initialize combobox data
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*/
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struct nsComboBoxInitData : public nsWidgetInitData {
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nsComboBoxInitData()
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: mDropDownHeight(0)
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{
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}
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PRUint32 mDropDownHeight; // in pixels
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};
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/**
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* Single selection drop down list. See nsIListWidget for capabilities
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*/
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class nsIComboBox : public nsISupports {
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public:
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/**
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* Set an item at the specific position
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*
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* @param aItem the item name. The item has to be null terminated
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* @param aPosition the position the item should be inserted at
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* 0 is at the top of the list
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* -1 is at the end of the list
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*/
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NS_IMETHOD AddItemAt(nsString &aItem, PRInt32 aPosition) = 0;
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/**
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* Finds the first occurrence of the specified item
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*
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* @param aItem the string to be filled
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* @param aStartPos the starting position (index)
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* @return PR_TRUE if successful, PR_FALSE otherwise
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*
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*/
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virtual PRInt32 FindItem(nsString &aItem, PRInt32 aStartPos) = 0;
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/**
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* Returns the number of items in the list
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*
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* @return the number of items
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*
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*/
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virtual PRInt32 GetItemCount() = 0;
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/**
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* Remove the first occurrence of the specified item
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*
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* @param aPosition the item position
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* 0 is at the top of the list
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* -1 is at the end of the list
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*
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* @return PR_TRUE if successful, PR_FALSE otherwise
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*
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*/
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virtual PRBool RemoveItemAt(PRInt32 aPosition) = 0;
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/**
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* Gets an item at a specific location
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*
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* @param anItem on return contains the string of the item at that position
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* @param aPosition the Position of the item
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*
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*/
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virtual PRBool GetItemAt(nsString& anItem, PRInt32 aPosition) = 0;
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/**
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* Gets the selected item for a single selection list
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*
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* @param aItem on return contains the string of the selected item
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*
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*/
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NS_IMETHOD GetSelectedItem(nsString &aItem) = 0;
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/**
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* Returns with the index of the selected item
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*
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* @return PRInt32, index of selected item
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*
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*/
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virtual PRInt32 GetSelectedIndex() = 0;
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/**
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* Select the item at the specified position
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*
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* @param PRInt32, the item position
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* 0 is at the top of the list
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* -1 is at the end of the list
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*
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*/
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NS_IMETHOD SelectItem(PRInt32 aPosition) = 0;
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/**
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* Deselects all the items in the list
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*
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*/
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NS_IMETHOD Deselect() = 0;
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};
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#endif // nsIComboBox_h__
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