зеркало из https://github.com/mozilla/pjs.git
132 строки
4.9 KiB
Plaintext
132 строки
4.9 KiB
Plaintext
/* -*- 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 Mozilla Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is the Mozilla browser.
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*
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* The Initial Developer of the Original Code is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1999 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Original Author: Marc Mulcahy (marc.mulcahy@sun.com)
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*
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* Contributor(s): Paul Sandoz (paul.sandoz@sun.com)
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* Bill Haneman (bill.haneman@sun.com)
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* John Gaunt (jgaunt@netscape.com)
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*/
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#include "nsISupports.idl"
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typedef long nsAccessibleTextBoundary;
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typedef long nsAccessibleCoordType;
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[scriptable, uuid(E44D3FA6-9CB2-432A-8BDB-69D72B6ADA00)]
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interface nsIAccessibleText : nsISupports
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{
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const nsAccessibleTextBoundary BOUNDARY_CHAR = 0;
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const nsAccessibleTextBoundary BOUNDARY_WORD_START = 1;
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const nsAccessibleTextBoundary BOUNDARY_WORD_END = 2;
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const nsAccessibleTextBoundary BOUNDARY_SENTENCE_START = 3;
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const nsAccessibleTextBoundary BOUNDARY_SENTENCE_END = 4;
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const nsAccessibleTextBoundary BOUNDARY_LINE_START = 5;
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const nsAccessibleTextBoundary BOUNDARY_LINE_END = 6;
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const nsAccessibleTextBoundary BOUNDARY_ATTRIBUTE_RANGE = 7;
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const nsAccessibleCoordType COORD_TYPE_SCREEN = 0;
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const nsAccessibleCoordType COORD_TYPE_WINDOW = 1;
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attribute long caretOffset;
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readonly attribute long characterCount;
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readonly attribute long selectionCount;
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/**
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* String methods may need to return multibyte-encoded strings,
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* since some locales can't be encoded using 16-bit chars.
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* So the methods below might return UTF-16 strings, or they could
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* return "string" values which are UTF-8.
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*/
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AString getText (in long startOffset, in long endOffset);
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AString getTextAfterOffset (in long offset,
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in nsAccessibleTextBoundary boundaryType,
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out long startOffset,
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out long endOffset);
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AString getTextAtOffset (in long offset,
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in nsAccessibleTextBoundary boundaryType,
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out long startOffset,
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out long endOffset);
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/**
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* It would be better to return an unsigned long here,
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* to allow unicode chars > 16 bits
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*/
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wchar getCharacterAtOffset (in long offset);
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nsISupports getAttributeRange (in long offset,
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out long rangeStartOffset,
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out long rangeEndOffset);
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AString getTextBeforeOffset (in long offset,
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in nsAccessibleTextBoundary boundaryType,
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out long startOffset,
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out long endOffset);
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void getCharacterExtents (in long offset,
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out long x,
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out long y,
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out long length,
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out long width,
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in nsAccessibleCoordType coordType);
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long getOffsetAtPoint (in long x, in long y,
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in nsAccessibleCoordType coordType);
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void getSelectionBounds (in long selectionNum,
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out long startOffset,
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out long endOffset);
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void setSelectionBounds (in long selectionNum,
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in long startOffset,
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in long endOffset);
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void addSelection (in long startOffset, in long endOffset);
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void removeSelection (in long selectionNum);
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};
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/*
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Assumptions:
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Using wstring (UCS2) instead of string encoded in UTF-8.
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Multibyte encodings (or at least potentially multi-byte
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encodings) would be preferred for the reasons cited above.
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The following methods will throw an exception
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on failure (since not every text component will allow
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every operation):
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setSelectionBounds, addSelection, removeSelection,
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setCaretOffset.
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getRangeAttributes defined to return an nsISupports
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interface instead of a pango specific data structure.
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It may be that some other return type is more appropriate
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for mozilla text attributes.
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we assume that all text components support the idea of
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a caret offset, whether visible or "virtual". If this
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isn't the case, caretOffset can be made readonly and
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a setCaretOffset method provided which throws an exception
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on failure (as with *selection methods above).
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*/
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