зеркало из https://github.com/mozilla/pjs.git
Bug 151048 Implemetation of nsIAccessibleText
r=aaronl, sr=jst first step: the new files
This commit is contained in:
kyle.yuan%sun.com
Родитель
94f7bdc0e4
Коммит
0ff1a9d47d
|
|
@ -0,0 +1,459 @@
|
|||
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
||||
/* ***** BEGIN LICENSE BLOCK *****
|
||||
* Version: NPL 1.1/GPL 2.0/LGPL 2.1
|
||||
*
|
||||
* The contents of this file are subject to the Netscape 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/NPL/
|
||||
*
|
||||
* 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):
|
||||
* John Gaunt (jgaunt@netscape.com)
|
||||
* Aaron Leventhal (aaronl@netscape.com)
|
||||
* Kyle Yuan (kyle.yuan@sun.com)
|
||||
*
|
||||
* Alternatively, the contents of this file may be used under the terms of
|
||||
* either 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
|
||||
* of those above. If you wish to allow use of your version of this file only
|
||||
* under the terms of either the GPL or the LGPL, and not to allow others to
|
||||
* use your version of this file under the terms of the NPL, indicate your
|
||||
* decision by deleting the provisions above and replace them with the notice
|
||||
* and other provisions required by the GPL or the LGPL. If you do not delete
|
||||
* the provisions above, a recipient may use your version of this file under
|
||||
* the terms of any one of the NPL, the GPL or the LGPL.
|
||||
*
|
||||
* ***** END LICENSE BLOCK ***** */
|
||||
|
||||
// NOTE: alphabetically ordered
|
||||
#include "nsContentCID.h"
|
||||
#include "nsIDOMRange.h"
|
||||
#include "nsIFrame.h"
|
||||
#include "nsITextContent.h"
|
||||
#include "nsTextAccessible.h"
|
||||
#include "nsTextFragment.h"
|
||||
|
||||
static NS_DEFINE_IID(kRangeCID, NS_RANGE_CID);
|
||||
|
||||
// ------------
|
||||
// Text Accessibles
|
||||
// ------------
|
||||
|
||||
nsTextAccessible::nsTextAccessible(nsIDOMNode* aDomNode, nsIWeakReference* aShell):
|
||||
nsLinkableAccessible(aDomNode, aShell)
|
||||
{
|
||||
}
|
||||
|
||||
NS_IMPL_ISUPPORTS_INHERITED1(nsTextAccessible, nsLinkableAccessible, nsIAccessibleText)
|
||||
|
||||
/**
|
||||
* We are text
|
||||
*/
|
||||
NS_IMETHODIMP nsTextAccessible::GetAccRole(PRUint32 *_retval)
|
||||
{
|
||||
*_retval = ROLE_TEXT;
|
||||
return NS_OK;
|
||||
}
|
||||
|
||||
/**
|
||||
* No Children
|
||||
*/
|
||||
NS_IMETHODIMP nsTextAccessible::GetAccFirstChild(nsIAccessible **_retval)
|
||||
{
|
||||
*_retval = nsnull;
|
||||
return NS_OK;
|
||||
}
|
||||
|
||||
/**
|
||||
* No Children
|
||||
*/
|
||||
NS_IMETHODIMP nsTextAccessible::GetAccLastChild(nsIAccessible **_retval)
|
||||
{
|
||||
*_retval = nsnull;
|
||||
return NS_OK;
|
||||
}
|
||||
|
||||
/**
|
||||
* No Children
|
||||
*/
|
||||
NS_IMETHODIMP nsTextAccessible::GetAccChildCount(PRInt32 *_retval)
|
||||
{
|
||||
*_retval = 0;
|
||||
return NS_OK;
|
||||
}
|
||||
|
||||
/**
|
||||
* nsIAccessibleText support
|
||||
*/
|
||||
nsresult nsTextAccessible::GetSelections(nsISelectionController **aSelCon, nsISelection **aDomSel)
|
||||
{
|
||||
nsCOMPtr<nsIPresShell> shell(do_QueryReferent(mPresShell));
|
||||
if (!shell)
|
||||
return NS_ERROR_FAILURE;
|
||||
|
||||
nsCOMPtr<nsIPresContext> context;
|
||||
shell->GetPresContext(getter_AddRefs(context));
|
||||
nsCOMPtr<nsIContent> content(do_QueryInterface(mDOMNode));
|
||||
nsIFrame *frame = nsnull;
|
||||
if (content && NS_SUCCEEDED(shell->GetPrimaryFrameFor(content, &frame)) && frame) {
|
||||
frame->GetSelectionController(context, aSelCon);
|
||||
if (*aSelCon)
|
||||
(*aSelCon)->GetSelection(nsISelectionController::SELECTION_NORMAL, aDomSel);
|
||||
}
|
||||
|
||||
if (*aSelCon && *aDomSel)
|
||||
return NS_OK;
|
||||
|
||||
return NS_ERROR_FAILURE;
|
||||
}
|
||||
|
||||
/*
|
||||
Gets the specified text.
|
||||
|
||||
aBoundaryType means:
|
||||
|
||||
ATK_TEXT_BOUNDARY_CHAR
|
||||
The character before/at/after the offset is returned.
|
||||
|
||||
ATK_TEXT_BOUNDARY_WORD_START
|
||||
The returned string is from the word start before/at/after the offset to the next word start.
|
||||
|
||||
ATK_TEXT_BOUNDARY_WORD_END
|
||||
The returned string is from the word end before/at/after the offset to the next work end.
|
||||
|
||||
ATK_TEXT_BOUNDARY_SENTENCE_START
|
||||
The returned string is from the sentence start before/at/after the offset to the next sentence start.
|
||||
|
||||
ATK_TEXT_BOUNDARY_SENTENCE_END
|
||||
The returned string is from the sentence end before/at/after the offset to the next sentence end.
|
||||
|
||||
ATK_TEXT_BOUNDARY_LINE_START
|
||||
The returned string is from the line start before/at/after the offset to the next line start.
|
||||
|
||||
ATK_TEXT_BOUNDARY_LINE_END
|
||||
The returned string is from the line end before/at/after the offset to the next line start.
|
||||
*/
|
||||
nsresult nsTextAccessible::GetTextHelper(EGetTextType aType, nsAccessibleTextBoundary aBoundaryType,
|
||||
PRInt32 aOffset, PRInt32 *aStartOffset, PRInt32 *aEndOffset, nsAString & _retval)
|
||||
{
|
||||
nsCOMPtr<nsISelectionController> selCon;
|
||||
nsCOMPtr<nsISelection> domSel;
|
||||
|
||||
if (NS_FAILED(GetSelections(getter_AddRefs(selCon), getter_AddRefs(domSel))))
|
||||
return NS_ERROR_FAILURE;
|
||||
|
||||
nsCOMPtr<nsIDOMRange> range(do_CreateInstance(kRangeCID));
|
||||
if (!range)
|
||||
return NS_ERROR_OUT_OF_MEMORY;
|
||||
|
||||
*aStartOffset = *aEndOffset = aOffset;
|
||||
|
||||
// Move caret position to offset
|
||||
range->SetStart(mDOMNode, aOffset);
|
||||
range->SetEnd(mDOMNode, aOffset);
|
||||
domSel->RemoveAllRanges();
|
||||
domSel->AddRange(range);
|
||||
|
||||
// Step1: move caret to an appropriate start position
|
||||
// Step2: move caret to end postion and select the text
|
||||
PRBool isStep1Forward, isStep2Forward; // Moving directions for two steps
|
||||
switch (aType)
|
||||
{
|
||||
case eGetBefore:
|
||||
isStep1Forward = PR_FALSE;
|
||||
isStep2Forward = PR_FALSE;
|
||||
break;
|
||||
case eGetAt:
|
||||
isStep1Forward = PR_FALSE;
|
||||
isStep2Forward = PR_TRUE;
|
||||
break;
|
||||
case eGetAfter:
|
||||
isStep1Forward = PR_TRUE;
|
||||
isStep2Forward = PR_TRUE;
|
||||
break;
|
||||
default:
|
||||
return NS_ERROR_INVALID_ARG;
|
||||
}
|
||||
|
||||
switch (aBoundaryType)
|
||||
{
|
||||
case BOUNDARY_CHAR:
|
||||
if (aType == eGetAfter) { // We need the character next to current position
|
||||
selCon->CharacterMove(isStep1Forward, PR_FALSE);
|
||||
domSel->GetFocusOffset(aStartOffset);
|
||||
}
|
||||
selCon->CharacterMove(isStep2Forward, PR_TRUE);
|
||||
domSel->GetFocusOffset(aEndOffset);
|
||||
break;
|
||||
case BOUNDARY_WORD_START:
|
||||
selCon->WordMove(isStep1Forward, PR_FALSE); // Move caret to previous/next word start boundary
|
||||
domSel->GetFocusOffset(aStartOffset);
|
||||
selCon->WordMove(isStep2Forward, PR_TRUE); // Select previous/next word
|
||||
domSel->GetFocusOffset(aEndOffset);
|
||||
break;
|
||||
case BOUNDARY_LINE_START:
|
||||
if (aType != eGetAt) { // We need adjust the caret position to previous/next line
|
||||
selCon->LineMove(isStep1Forward, PR_TRUE);
|
||||
domSel->GetFocusOffset(aEndOffset);
|
||||
}
|
||||
selCon->IntraLineMove(PR_FALSE, PR_FALSE); // Move caret to the line start
|
||||
domSel->GetFocusOffset(aStartOffset);
|
||||
selCon->IntraLineMove(PR_TRUE, PR_TRUE); // Move caret to the line end and select the whole line
|
||||
domSel->GetFocusOffset(aEndOffset);
|
||||
break;
|
||||
case BOUNDARY_WORD_END:
|
||||
case BOUNDARY_LINE_END:
|
||||
case BOUNDARY_SENTENCE_START:
|
||||
case BOUNDARY_SENTENCE_END:
|
||||
case BOUNDARY_ATTRIBUTE_RANGE:
|
||||
return NS_ERROR_NOT_IMPLEMENTED;
|
||||
default:
|
||||
return NS_ERROR_INVALID_ARG;
|
||||
}
|
||||
|
||||
nsXPIDLString text;
|
||||
// Get text from selection
|
||||
domSel->ToString(getter_Copies(text));
|
||||
domSel->RemoveAllRanges();
|
||||
_retval = text;
|
||||
|
||||
// Ensure aStartOffset <= aEndOffset
|
||||
if (*aStartOffset > *aEndOffset) {
|
||||
PRInt32 tmp = *aStartOffset;
|
||||
*aStartOffset = *aEndOffset;
|
||||
*aEndOffset = tmp;
|
||||
}
|
||||
|
||||
return NS_OK;
|
||||
}
|
||||
|
||||
/*
|
||||
* Gets the offset position of the caret (cursor).
|
||||
*/
|
||||
NS_IMETHODIMP nsTextAccessible::GetCaretOffset(PRInt32 *aCaretOffset)
|
||||
{
|
||||
nsCOMPtr<nsISelectionController> selCon;
|
||||
nsCOMPtr<nsISelection> domSel;
|
||||
|
||||
if (NS_FAILED(GetSelections(getter_AddRefs(selCon), getter_AddRefs(domSel))))
|
||||
return NS_ERROR_FAILURE;
|
||||
|
||||
return domSel->GetFocusOffset(aCaretOffset);
|
||||
}
|
||||
|
||||
/*
|
||||
* Sets the caret (cursor) position to the specified offset.
|
||||
*/
|
||||
NS_IMETHODIMP nsTextAccessible::SetCaretOffset(PRInt32 aCaretOffset)
|
||||
{
|
||||
nsCOMPtr<nsISelectionController> selCon;
|
||||
nsCOMPtr<nsISelection> domSel;
|
||||
|
||||
if (NS_FAILED(GetSelections(getter_AddRefs(selCon), getter_AddRefs(domSel))))
|
||||
return NS_ERROR_FAILURE;
|
||||
|
||||
nsCOMPtr<nsIDOMRange> range(do_CreateInstance(kRangeCID));
|
||||
if (! range)
|
||||
return NS_ERROR_OUT_OF_MEMORY;
|
||||
|
||||
range->SetStart(mDOMNode, aCaretOffset);
|
||||
range->SetEnd(mDOMNode, aCaretOffset);
|
||||
return domSel->AddRange(range);
|
||||
}
|
||||
|
||||
/*
|
||||
* Gets the character count.
|
||||
*/
|
||||
NS_IMETHODIMP nsTextAccessible::GetCharacterCount(PRInt32 *aCharacterCount)
|
||||
{
|
||||
nsCOMPtr<nsITextContent> textContent(do_QueryInterface(mDOMNode));
|
||||
if (!textContent)
|
||||
return NS_ERROR_FAILURE;
|
||||
|
||||
return textContent->GetTextLength(aCharacterCount);
|
||||
}
|
||||
|
||||
/*
|
||||
* Gets the number of selected regions.
|
||||
*/
|
||||
NS_IMETHODIMP nsTextAccessible::GetSelectionCount(PRInt32 *aSelectionCount)
|
||||
{
|
||||
nsCOMPtr<nsISelectionController> selCon;
|
||||
nsCOMPtr<nsISelection> domSel;
|
||||
|
||||
if (NS_FAILED(GetSelections(getter_AddRefs(selCon), getter_AddRefs(domSel))))
|
||||
return NS_ERROR_FAILURE;
|
||||
|
||||
return domSel->GetRangeCount(aSelectionCount);
|
||||
}
|
||||
|
||||
/*
|
||||
* Gets the specified text.
|
||||
*/
|
||||
NS_IMETHODIMP nsTextAccessible::GetText(PRInt32 aStartOffset, PRInt32 aEndOffset, nsAString & _retval)
|
||||
{
|
||||
nsAutoString text;
|
||||
mDOMNode->GetNodeValue(text);
|
||||
_retval = Substring(text, aStartOffset, aEndOffset - aStartOffset);
|
||||
return NS_OK;
|
||||
}
|
||||
|
||||
NS_IMETHODIMP nsTextAccessible::GetTextBeforeOffset(PRInt32 aOffset, nsAccessibleTextBoundary aBoundaryType, PRInt32 *aStartOffset, PRInt32 *aEndOffset, nsAString & _retval)
|
||||
{
|
||||
return GetTextHelper(eGetBefore, aBoundaryType, aOffset, aStartOffset, aEndOffset, _retval);
|
||||
}
|
||||
|
||||
NS_IMETHODIMP nsTextAccessible::GetTextAtOffset(PRInt32 aOffset, nsAccessibleTextBoundary aBoundaryType, PRInt32 *aStartOffset, PRInt32 *aEndOffset, nsAString & _retval)
|
||||
{
|
||||
return GetTextHelper(eGetAt, aBoundaryType, aOffset, aStartOffset, aEndOffset, _retval);
|
||||
}
|
||||
|
||||
NS_IMETHODIMP nsTextAccessible::GetTextAfterOffset(PRInt32 aOffset, nsAccessibleTextBoundary aBoundaryType, PRInt32 *aStartOffset, PRInt32 *aEndOffset, nsAString & _retval)
|
||||
{
|
||||
return GetTextHelper(eGetAfter, aBoundaryType, aOffset, aStartOffset, aEndOffset, _retval);
|
||||
}
|
||||
|
||||
/*
|
||||
* Gets the specified text.
|
||||
*/
|
||||
NS_IMETHODIMP nsTextAccessible::GetCharacterAtOffset(PRInt32 aOffset, PRUnichar *_retval)
|
||||
{
|
||||
nsCOMPtr<nsITextContent> textContent(do_QueryInterface(mDOMNode));
|
||||
if (!textContent)
|
||||
return NS_ERROR_FAILURE;
|
||||
|
||||
const nsTextFragment *textFrag;
|
||||
textContent->GetText(&textFrag);
|
||||
*_retval = textFrag->CharAt(aOffset);
|
||||
return NS_OK;
|
||||
}
|
||||
|
||||
NS_IMETHODIMP nsTextAccessible::GetAttributeRange(PRInt32 aOffset, PRInt32 *aRangeStartOffset, PRInt32 *aRangeEndOffset, nsISupports **_retval)
|
||||
{
|
||||
// will do better job later
|
||||
return NS_ERROR_NOT_IMPLEMENTED;
|
||||
}
|
||||
|
||||
/*
|
||||
* Given an offset, the x, y, width, and height values are filled appropriately.
|
||||
*/
|
||||
NS_IMETHODIMP nsTextAccessible::GetCharacterExtents(PRInt32 aOffset, PRInt32 *aX, PRInt32 *aY, PRInt32 *aLength, PRInt32 *aWidth, nsAccessibleCoordType aCoordType)
|
||||
{
|
||||
// will do better job later
|
||||
return NS_ERROR_NOT_IMPLEMENTED;
|
||||
}
|
||||
|
||||
/*
|
||||
* Gets the offset of the character located at coordinates x and y. x and y are interpreted as being relative to
|
||||
* the screen or this widget's window depending on coords.
|
||||
*/
|
||||
NS_IMETHODIMP nsTextAccessible::GetOffsetAtPoint(PRInt32 aX, PRInt32 aY, nsAccessibleCoordType aCoordType, PRInt32 *_retval)
|
||||
{
|
||||
// will do better job later
|
||||
return NS_ERROR_NOT_IMPLEMENTED;
|
||||
}
|
||||
|
||||
/*
|
||||
* Gets the start and end offset of the specified selection.
|
||||
*/
|
||||
NS_IMETHODIMP nsTextAccessible::GetSelectionBounds(PRInt32 aSelectionNum, PRInt32 *aStartOffset, PRInt32 *aEndOffset)
|
||||
{
|
||||
nsCOMPtr<nsISelectionController> selCon;
|
||||
nsCOMPtr<nsISelection> domSel;
|
||||
|
||||
if (NS_FAILED(GetSelections(getter_AddRefs(selCon), getter_AddRefs(domSel))))
|
||||
return NS_ERROR_FAILURE;
|
||||
|
||||
PRInt32 rangeCount;
|
||||
domSel->GetRangeCount(&rangeCount);
|
||||
if (aSelectionNum < 0 || aSelectionNum >= rangeCount)
|
||||
return NS_ERROR_INVALID_ARG;
|
||||
|
||||
nsCOMPtr<nsIDOMRange> range;
|
||||
domSel->GetRangeAt(aSelectionNum, getter_AddRefs(range));
|
||||
range->GetStartOffset(aStartOffset);
|
||||
range->GetEndOffset(aEndOffset);
|
||||
return NS_OK;
|
||||
}
|
||||
|
||||
/*
|
||||
* Changes the start and end offset of the specified selection.
|
||||
*/
|
||||
NS_IMETHODIMP nsTextAccessible::SetSelectionBounds(PRInt32 aSelectionNum, PRInt32 aStartOffset, PRInt32 aEndOffset)
|
||||
{
|
||||
nsCOMPtr<nsISelectionController> selCon;
|
||||
nsCOMPtr<nsISelection> domSel;
|
||||
|
||||
if (NS_FAILED(GetSelections(getter_AddRefs(selCon), getter_AddRefs(domSel))))
|
||||
return NS_ERROR_FAILURE;
|
||||
|
||||
PRInt32 rangeCount;
|
||||
domSel->GetRangeCount(&rangeCount);
|
||||
if (aSelectionNum < 0 || aSelectionNum >= rangeCount)
|
||||
return NS_ERROR_INVALID_ARG;
|
||||
|
||||
nsCOMPtr<nsIDOMRange> range;
|
||||
domSel->GetRangeAt(aSelectionNum, getter_AddRefs(range));
|
||||
|
||||
nsCOMPtr<nsIDOMNode> startParent;
|
||||
nsCOMPtr<nsIDOMNode> endParent;
|
||||
range->GetStartContainer(getter_AddRefs(startParent));
|
||||
range->GetEndContainer(getter_AddRefs(endParent));
|
||||
range->SetStart(startParent, aStartOffset);
|
||||
range->SetEnd(endParent, aEndOffset);
|
||||
return NS_OK;
|
||||
}
|
||||
|
||||
/*
|
||||
* Adds a selection bounded by the specified offsets.
|
||||
*/
|
||||
NS_IMETHODIMP nsTextAccessible::AddSelection(PRInt32 aStartOffset, PRInt32 aEndOffset)
|
||||
{
|
||||
nsCOMPtr<nsISelectionController> selCon;
|
||||
nsCOMPtr<nsISelection> domSel;
|
||||
|
||||
if (NS_FAILED(GetSelections(getter_AddRefs(selCon), getter_AddRefs(domSel))))
|
||||
return NS_ERROR_FAILURE;
|
||||
|
||||
nsCOMPtr<nsIDOMRange> range(do_CreateInstance(kRangeCID));
|
||||
if (! range)
|
||||
return NS_ERROR_OUT_OF_MEMORY;
|
||||
|
||||
range->SetStart(mDOMNode, aStartOffset);
|
||||
range->SetEnd(mDOMNode, aEndOffset);
|
||||
return domSel->AddRange(range);
|
||||
}
|
||||
|
||||
/*
|
||||
* Removes the specified selection.
|
||||
*/
|
||||
NS_IMETHODIMP nsTextAccessible::RemoveSelection(PRInt32 aSelectionNum)
|
||||
{
|
||||
nsCOMPtr<nsISelectionController> selCon;
|
||||
nsCOMPtr<nsISelection> domSel;
|
||||
|
||||
if (NS_FAILED(GetSelections(getter_AddRefs(selCon), getter_AddRefs(domSel))))
|
||||
return NS_ERROR_FAILURE;
|
||||
|
||||
PRInt32 rangeCount;
|
||||
domSel->GetRangeCount(&rangeCount);
|
||||
if (aSelectionNum < 0 || aSelectionNum >= rangeCount)
|
||||
return NS_ERROR_INVALID_ARG;
|
||||
|
||||
nsCOMPtr<nsIDOMRange> range;
|
||||
domSel->GetRangeAt(aSelectionNum, getter_AddRefs(range));
|
||||
return domSel->RemoveRange(range);
|
||||
}
|
||||
|
|
@ -0,0 +1,75 @@
|
|||
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
||||
/* ***** BEGIN LICENSE BLOCK *****
|
||||
* Version: NPL 1.1/GPL 2.0/LGPL 2.1
|
||||
*
|
||||
* The contents of this file are subject to the Netscape 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/NPL/
|
||||
*
|
||||
* 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):
|
||||
* Author: Eric D Vaughan (evaughan@netscape.com)
|
||||
*
|
||||
*
|
||||
* Alternatively, the contents of this file may be used under the terms of
|
||||
* either 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
|
||||
* of those above. If you wish to allow use of your version of this file only
|
||||
* under the terms of either the GPL or the LGPL, and not to allow others to
|
||||
* use your version of this file under the terms of the NPL, indicate your
|
||||
* decision by deleting the provisions above and replace them with the notice
|
||||
* and other provisions required by the GPL or the LGPL. If you do not delete
|
||||
* the provisions above, a recipient may use your version of this file under
|
||||
* the terms of any one of the NPL, the GPL or the LGPL.
|
||||
*
|
||||
* ***** END LICENSE BLOCK ***** */
|
||||
|
||||
#ifndef _nsTextAccessible_H_
|
||||
#define _nsTextAccessible_H_
|
||||
|
||||
#include "nsBaseWidgetAccessible.h"
|
||||
#include "nsIAccessibleText.h"
|
||||
#include "nsISelectionController.h"
|
||||
|
||||
/**
|
||||
* Text nodes have no children, but since double inheritance
|
||||
* no-worky we have to re-impl the LeafAccessiblity blocks
|
||||
* this way.
|
||||
*/
|
||||
class nsTextAccessible : public nsLinkableAccessible,
|
||||
public nsIAccessibleText
|
||||
{
|
||||
public:
|
||||
NS_DECL_ISUPPORTS_INHERITED
|
||||
NS_DECL_NSIACCESSIBLETEXT
|
||||
|
||||
nsTextAccessible(nsIDOMNode* aDomNode, nsIWeakReference* aShell);
|
||||
NS_IMETHOD GetAccRole(PRUint32 *_retval);
|
||||
NS_IMETHOD GetAccFirstChild(nsIAccessible **_retval);
|
||||
NS_IMETHOD GetAccLastChild(nsIAccessible **_retval);
|
||||
NS_IMETHOD GetAccChildCount(PRInt32 *_retval);
|
||||
|
||||
private:
|
||||
enum EGetTextType { eGetBefore=-1, eGetAt=0, eGetAfter=1 };
|
||||
|
||||
nsresult GetSelections(nsISelectionController **aSelCon, nsISelection **aDomSel);
|
||||
nsresult GetTextHelper(EGetTextType aType, nsAccessibleTextBoundary aBoundaryType,
|
||||
PRInt32 aOffset, PRInt32 *aStartOffset, PRInt32 *aEndOffset, nsAString & _retval);
|
||||
};
|
||||
|
||||
|
||||
#endif
|
||||
|
||||
Загрузка…
Ссылка в новой задаче