447 lines
12 KiB
C++
447 lines
12 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: NPL 1.1/GPL 2.0/LGPL 2.1
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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 1.1 (the "License"); you may not use this file except in
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* compliance with the License. You may obtain a copy of the License at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Author: Eric Vaughan (evaughan@netscape.com)
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*
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the NPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the NPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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// NOTE: alphabetically ordered
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#include "nsAccessible.h"
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#include "nsFormControlAccessible.h"
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#include "nsHTMLAtoms.h"
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#include "nsHTMLFormControlAccessible.h"
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#include "nsIDOMHTMLButtonElement.h"
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#include "nsIDOMHTMLFormElement.h"
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#include "nsIDOMHTMLInputElement.h"
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#include "nsIDOMNSHTMLButtonElement.h"
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#include "nsIDOMHTMLLabelElement.h"
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#include "nsIDOMHTMLTextAreaElement.h"
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#include "nsIDOMXULCheckboxElement.h"
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#include "nsIDOMXULButtonElement.h"
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#include "nsIDOMXULSelectCntrlItemEl.h"
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#include "nsIDOMXULSelectCntrlEl.h"
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#include "nsINameSpaceManager.h"
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#include "nsIFrame.h"
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#include "nsISelectionController.h"
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#include "nsReadableUtils.h"
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#include "nsWeakReference.h"
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// --- checkbox -----
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nsHTMLCheckboxAccessible::nsHTMLCheckboxAccessible(nsIDOMNode* aNode, nsIWeakReference* aShell):
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nsFormControlAccessible(aNode, aShell)
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{
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}
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NS_IMETHODIMP nsHTMLCheckboxAccessible::GetAccRole(PRUint32 *_retval)
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{
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*_retval = ROLE_CHECKBUTTON;
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return NS_OK;
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}
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NS_IMETHODIMP nsHTMLCheckboxAccessible::GetAccNumActions(PRUint8 *_retval)
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{
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*_retval = eSingle_Action;
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return NS_OK;
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}
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NS_IMETHODIMP nsHTMLCheckboxAccessible::GetAccActionName(PRUint8 index, nsAString& _retval)
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{
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if (index == eAction_Click) { // 0 is the magic value for default action
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// check or uncheck
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PRUint32 state;
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GetAccState(&state);
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if (state & STATE_CHECKED)
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nsAccessible::GetTranslatedString(NS_LITERAL_STRING("uncheck"), _retval);
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else
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nsAccessible::GetTranslatedString(NS_LITERAL_STRING("check"), _retval);
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return NS_OK;
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}
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return NS_ERROR_INVALID_ARG;
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}
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NS_IMETHODIMP nsHTMLCheckboxAccessible::AccDoAction(PRUint8 index)
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{
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if (index == 0) { // 0 is the magic value for default action
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nsCOMPtr<nsIDOMHTMLInputElement> htmlCheckboxElement(do_QueryInterface(mDOMNode));
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if (htmlCheckboxElement) {
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htmlCheckboxElement->Click();
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return NS_OK;
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}
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return NS_ERROR_FAILURE;
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}
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return NS_ERROR_INVALID_ARG;
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}
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NS_IMETHODIMP nsHTMLCheckboxAccessible::GetAccState(PRUint32 *_retval)
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{
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nsFormControlAccessible::GetAccState(_retval);
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PRBool checked = PR_FALSE; // Radio buttons and check boxes can be checked
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nsCOMPtr<nsIDOMHTMLInputElement> htmlCheckboxElement(do_QueryInterface(mDOMNode));
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if (htmlCheckboxElement)
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htmlCheckboxElement->GetChecked(&checked);
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if (checked)
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*_retval |= STATE_CHECKED;
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return NS_OK;
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}
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//------ Radio button -------
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nsHTMLRadioButtonAccessible::nsHTMLRadioButtonAccessible(nsIDOMNode* aNode, nsIWeakReference* aShell):
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nsRadioButtonAccessible(aNode, aShell)
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{
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}
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NS_IMETHODIMP nsHTMLRadioButtonAccessible::AccDoAction(PRUint8 index)
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{
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if (index == eAction_Click) {
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nsCOMPtr<nsIDOMHTMLInputElement> element(do_QueryInterface(mDOMNode));
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if (element) {
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element->Click();
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return NS_OK;
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}
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}
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return NS_ERROR_INVALID_ARG;
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}
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NS_IMETHODIMP nsHTMLRadioButtonAccessible::GetAccState(PRUint32 *_retval)
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{
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nsFormControlAccessible::GetAccState(_retval);
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PRBool checked = PR_FALSE; // Radio buttons and check boxes can be checked
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nsCOMPtr<nsIDOMHTMLInputElement> htmlRadioElement(do_QueryInterface(mDOMNode));
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if (htmlRadioElement)
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htmlRadioElement->GetChecked(&checked);
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if (checked)
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*_retval |= STATE_CHECKED;
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return NS_OK;
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}
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// ----- Button -----
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nsHTMLButtonAccessible::nsHTMLButtonAccessible(nsIDOMNode* aNode, nsIWeakReference* aShell):
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nsFormControlAccessible(aNode, aShell)
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{
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}
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NS_IMETHODIMP nsHTMLButtonAccessible::GetAccNumActions(PRUint8 *_retval)
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{
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*_retval = eSingle_Action;
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return NS_OK;
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}
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NS_IMETHODIMP nsHTMLButtonAccessible::GetAccActionName(PRUint8 index, nsAString& _retval)
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{
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if (index == eAction_Click) {
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nsAccessible::GetTranslatedString(NS_LITERAL_STRING("press"), _retval);
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return NS_OK;
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}
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return NS_ERROR_INVALID_ARG;
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}
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NS_IMETHODIMP nsHTMLButtonAccessible::AccDoAction(PRUint8 index)
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{
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if (index == eAction_Click) {
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nsCOMPtr<nsIDOMHTMLInputElement> element(do_QueryInterface(mDOMNode));
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if (element) {
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element->Click();
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return NS_OK;
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}
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}
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return NS_ERROR_INVALID_ARG;
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}
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NS_IMETHODIMP nsHTMLButtonAccessible::GetAccState(PRUint32 *_retval)
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{
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nsFormControlAccessible::GetAccState(_retval);
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nsCOMPtr<nsIDOMElement> element(do_QueryInterface(mDOMNode));
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NS_ASSERTION(element, "No nsIDOMElement for button node!");
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nsAutoString buttonType;
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element->GetAttribute(NS_LITERAL_STRING("type"), buttonType);
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if (buttonType.EqualsIgnoreCase("submit"))
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*_retval |= STATE_DEFAULT;
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return NS_OK;
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}
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NS_IMETHODIMP nsHTMLButtonAccessible::GetAccRole(PRUint32 *_retval)
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{
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*_retval = ROLE_PUSHBUTTON;
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return NS_OK;
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}
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NS_IMETHODIMP nsHTMLButtonAccessible::GetAccName(nsAString& _retval)
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{
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nsCOMPtr<nsIDOMHTMLInputElement> button(do_QueryInterface(mDOMNode));
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if (!button)
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return NS_ERROR_FAILURE;
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nsAutoString name;
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button->GetValue(name);
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name.CompressWhitespace();
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_retval.Assign(name);
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return NS_OK;
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}
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// ----- HTML 4 Button: can contain arbitrary HTML content -----
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nsHTML4ButtonAccessible::nsHTML4ButtonAccessible(nsIDOMNode* aNode, nsIWeakReference* aShell):
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nsLeafAccessible(aNode, aShell)
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{
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}
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NS_IMETHODIMP nsHTML4ButtonAccessible::GetAccNumActions(PRUint8 *_retval)
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{
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*_retval = eSingle_Action;
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return NS_OK;;
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}
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NS_IMETHODIMP nsHTML4ButtonAccessible::GetAccActionName(PRUint8 index, nsAString& _retval)
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{
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if (index == eAction_Click) {
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nsAccessible::GetTranslatedString(NS_LITERAL_STRING("press"), _retval);
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return NS_OK;
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}
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return NS_ERROR_INVALID_ARG;
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}
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NS_IMETHODIMP nsHTML4ButtonAccessible::AccDoAction(PRUint8 index)
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{
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if (index == 0) {
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nsCOMPtr<nsIDOMNSHTMLButtonElement> buttonElement(do_QueryInterface(mDOMNode));
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if ( buttonElement )
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{
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buttonElement->Click();
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return NS_OK;
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}
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return NS_ERROR_FAILURE;
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}
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return NS_ERROR_INVALID_ARG;
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}
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NS_IMETHODIMP nsHTML4ButtonAccessible::GetAccRole(PRUint32 *_retval)
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{
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*_retval = ROLE_PUSHBUTTON;
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return NS_OK;
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}
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NS_IMETHODIMP nsHTML4ButtonAccessible::GetAccState(PRUint32 *_retval)
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{
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nsAccessible::GetAccState(_retval);
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*_retval |= STATE_FOCUSABLE;
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nsCOMPtr<nsIDOMElement> element(do_QueryInterface(mDOMNode));
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NS_ASSERTION(element, "No nsIDOMElement for button node!");
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nsAutoString buttonType;
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element->GetAttribute(NS_LITERAL_STRING("type"), buttonType);
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if (buttonType.EqualsIgnoreCase("submit"))
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*_retval |= STATE_DEFAULT;
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return NS_OK;
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}
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NS_IMETHODIMP nsHTML4ButtonAccessible::GetAccName(nsAString& _retval)
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{
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nsresult rv = NS_ERROR_FAILURE;
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nsCOMPtr<nsIContent> content(do_QueryInterface(mDOMNode));
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nsAutoString name;
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if (content)
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rv = AppendFlatStringFromSubtree(content, &name);
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if (NS_SUCCEEDED(rv)) {
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// Temp var needed until CompressWhitespace built for nsAString
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name.CompressWhitespace();
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_retval.Assign(name);
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}
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return rv;
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}
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// --- textfield -----
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nsHTMLTextFieldAccessible::nsHTMLTextFieldAccessible(nsIDOMNode* aNode, nsIWeakReference* aShell):
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nsFormControlAccessible(aNode, aShell)
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{
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}
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NS_IMETHODIMP nsHTMLTextFieldAccessible::GetAccRole(PRUint32 *_retval)
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{
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*_retval = ROLE_TEXT;
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return NS_OK;
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}
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NS_IMETHODIMP nsHTMLTextFieldAccessible::GetAccValue(nsAString& _retval)
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{
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PRUint32 state;
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GetAccState(&state);
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if (state & STATE_PROTECTED) // Don't return password text!
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return NS_ERROR_FAILURE;
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nsCOMPtr<nsIDOMHTMLTextAreaElement> textArea(do_QueryInterface(mDOMNode));
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if (textArea) {
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textArea->GetValue(_retval);
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return NS_OK;
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}
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nsCOMPtr<nsIDOMHTMLInputElement> inputElement(do_QueryInterface(mDOMNode));
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if (inputElement) {
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inputElement->GetValue(_retval);
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return NS_OK;
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}
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return NS_ERROR_FAILURE;
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}
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NS_IMETHODIMP nsHTMLTextFieldAccessible::GetAccState(PRUint32 *_retval)
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{
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// can be
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// focusable, focused, protected. readonly, unavailable, selected
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nsAccessible::GetAccState(_retval);
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*_retval |= STATE_FOCUSABLE;
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nsCOMPtr<nsIDOMHTMLTextAreaElement> textArea(do_QueryInterface(mDOMNode));
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nsCOMPtr<nsIDOMHTMLInputElement> inputElement(do_QueryInterface(mDOMNode));
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nsCOMPtr<nsIDOMElement> elt(do_QueryInterface(mDOMNode));
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PRBool isReadOnly = PR_FALSE;
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elt->HasAttribute(NS_LITERAL_STRING("readonly"), &isReadOnly);
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if (isReadOnly)
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*_retval |= STATE_READONLY;
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// Get current selection and find out if current node is in it
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nsCOMPtr<nsIPresShell> shell(do_QueryReferent(mPresShell));
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if (!shell) {
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return NS_ERROR_FAILURE;
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}
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nsCOMPtr<nsIPresContext> context;
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shell->GetPresContext(getter_AddRefs(context));
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nsCOMPtr<nsIContent> content(do_QueryInterface(mDOMNode));
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nsIFrame *frame = nsnull;
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if (content && NS_SUCCEEDED(shell->GetPrimaryFrameFor(content, &frame)) && frame) {
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nsCOMPtr<nsISelectionController> selCon;
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frame->GetSelectionController(context,getter_AddRefs(selCon));
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if (selCon) {
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nsCOMPtr<nsISelection> domSel;
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selCon->GetSelection(nsISelectionController::SELECTION_NORMAL, getter_AddRefs(domSel));
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if (domSel) {
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PRBool isCollapsed = PR_TRUE;
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domSel->GetIsCollapsed(&isCollapsed);
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if (!isCollapsed)
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*_retval |=STATE_SELECTED;
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}
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}
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}
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if (!textArea) {
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if (inputElement) {
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/////// ====== Must be a password field, so it uses nsIDOMHTMLFormControl ==== ///////
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PRUint32 moreStates = 0;
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nsresult rv = nsFormControlAccessible::GetAccState(&moreStates);
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*_retval |= moreStates;
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return rv;
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}
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return NS_ERROR_FAILURE;
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}
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PRBool disabled = PR_FALSE;
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textArea->GetDisabled(&disabled);
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if (disabled)
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*_retval |= STATE_UNAVAILABLE;
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return NS_OK;
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}
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// --- groupbox -----
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/*
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* The HTML for this is <fieldset> <legend>box-title</legend> form elements </fieldset>
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*/
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nsHTMLGroupboxAccessible::nsHTMLGroupboxAccessible(nsIDOMNode* aNode, nsIWeakReference* aShell):
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nsAccessible(aNode, aShell)
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{
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}
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NS_IMETHODIMP nsHTMLGroupboxAccessible::GetAccRole(PRUint32 *_retval)
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{
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*_retval = ROLE_GROUPING;
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return NS_OK;
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}
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NS_IMETHODIMP nsHTMLGroupboxAccessible::GetAccState(PRUint32 *_retval)
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{
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// Groupbox doesn't support any states!
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*_retval = 0;
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return NS_OK;
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}
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NS_IMETHODIMP nsHTMLGroupboxAccessible::GetAccName(nsAString& _retval)
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{
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nsCOMPtr<nsIDOMElement> element(do_QueryInterface(mDOMNode));
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if (element) {
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nsCOMPtr<nsIDOMNodeList> legends;
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element->GetElementsByTagName(NS_LITERAL_STRING("legend"), getter_AddRefs(legends));
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if (legends) {
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nsCOMPtr<nsIDOMNode> legendNode;
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legends->Item(0, getter_AddRefs(legendNode));
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nsCOMPtr<nsIContent> legendContent(do_QueryInterface(legendNode));
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if (legendContent) {
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_retval.Assign(NS_LITERAL_STRING("")); // Default name is blank
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return AppendFlatStringFromSubtree(legendContent, &_retval);
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}
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}
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}
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return NS_OK;
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}
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