gecko-dev/accessible/interfaces/nsIAccessibleTextRange.idl

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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/. */
#include "nsISupports.idl"
interface nsIAccessible;
interface nsIAccessibleText;
interface nsIArray;
interface nsIVariant;
/**
* A range representing a piece of text in the document.
*/
[scriptable, builtinclass, uuid(c4515623-55f9-4543-a3d5-c1e9afa588f4)]
interface nsIAccessibleTextRange : nsISupports
{
readonly attribute nsIAccessibleText startContainer;
readonly attribute long startOffset;
readonly attribute nsIAccessibleText endContainer;
readonly attribute long endOffset;
/**
* Return an accessible containing the whole range
*/
readonly attribute nsIAccessible container;
/**
* Return embedded children within the range.
*/
readonly attribute nsIArray embeddedChildren;
/**
* Return true if this range has the same end points of the given range.
*/
boolean compare(in nsIAccessibleTextRange aOtherRange);
/**
* The two endpoints of the range (starting and ending).
*/
const unsigned long EndPoint_Start = 1;
const unsigned long EndPoint_End = 2;
/**
* Compare this and given ranges end points.
*
* @return -1/0/1 if this range end point is before/equal/after the given
* range end point.
*/
long compareEndPoints(in unsigned long aEndPoint,
in nsIAccessibleTextRange aOtherRange,
in unsigned long aOtherRangeEndPoint);
/**
* Return text within the range.
*/
readonly attribute AString text;
/**
* Crops the range by the given accessible element.
*/
boolean crop(in nsIAccessible aContainer);
const unsigned long AlignToTop = 0;
const unsigned long AlignToBottom = 1;
/**
* Scroll the range into view.
*/
void scrollIntoView(in unsigned long aHow);
};