mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
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311 lines
8.0 KiB
C++
311 lines
8.0 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: MPL 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 Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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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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* Mozilla Foundation.
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* Portions created by the Initial Developer are Copyright (C) 2007
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Alexander Surkov <surkov.alexander@gmail.com> (original author)
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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 of the GNU General Public License Version 2 or later (the "GPL"),
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* or 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 MPL, 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 MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "nsXULSliderAccessible.h"
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#include "nsAccessibilityAtoms.h"
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#include "nsIDOMDocument.h"
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#include "nsIDOMDocumentXBL.h"
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#include "nsIFrame.h"
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////////////////////////////////////////////////////////////////////////////////
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// nsXULSliderAccessible
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////////////////////////////////////////////////////////////////////////////////
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nsXULSliderAccessible::
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nsXULSliderAccessible(nsIContent *aContent, nsIWeakReference *aShell) :
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nsAccessibleWrap(aContent, aShell)
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{
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}
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// nsISupports
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NS_IMPL_ISUPPORTS_INHERITED1(nsXULSliderAccessible,
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nsAccessibleWrap,
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nsIAccessibleValue)
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// nsAccessible
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PRUint32
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nsXULSliderAccessible::NativeRole()
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{
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return nsIAccessibleRole::ROLE_SLIDER;
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}
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nsresult
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nsXULSliderAccessible::GetStateInternal(PRUint32 *aState,
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PRUint32 *aExtraState)
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{
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nsresult rv = nsAccessibleWrap::GetStateInternal(aState, aExtraState);
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NS_ENSURE_A11Y_SUCCESS(rv, rv);
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nsCOMPtr<nsIContent> sliderContent(GetSliderNode());
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NS_ENSURE_STATE(sliderContent);
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nsIFrame *frame = sliderContent->GetPrimaryFrame();
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if (frame && frame->IsFocusable())
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*aState |= nsIAccessibleStates::STATE_FOCUSABLE;
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if (gLastFocusedNode == mContent)
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*aState |= nsIAccessibleStates::STATE_FOCUSED;
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return NS_OK;
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}
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// nsIAccessible
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NS_IMETHODIMP
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nsXULSliderAccessible::GetValue(nsAString& aValue)
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{
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return GetSliderAttr(nsAccessibilityAtoms::curpos, aValue);
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}
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NS_IMETHODIMP
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nsXULSliderAccessible::GetNumActions(PRUint8 *aCount)
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{
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NS_ENSURE_ARG_POINTER(aCount);
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*aCount = 1;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsXULSliderAccessible::GetActionName(PRUint8 aIndex, nsAString& aName)
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{
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aName.Truncate();
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NS_ENSURE_ARG(aIndex == 0);
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aName.AssignLiteral("activate");
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return NS_OK;
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}
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NS_IMETHODIMP
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nsXULSliderAccessible::DoAction(PRUint8 aIndex)
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{
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NS_ENSURE_ARG(aIndex == 0);
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nsCOMPtr<nsIContent> sliderContent(GetSliderNode());
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NS_ENSURE_STATE(sliderContent);
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DoCommand(sliderContent);
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return NS_OK;
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}
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// nsIAccessibleValue
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NS_IMETHODIMP
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nsXULSliderAccessible::GetMaximumValue(double *aValue)
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{
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nsresult rv = nsAccessibleWrap::GetMaximumValue(aValue);
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// ARIA redefined maximum value.
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if (rv != NS_OK_NO_ARIA_VALUE)
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return rv;
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return GetSliderAttr(nsAccessibilityAtoms::maxpos, aValue);
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}
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NS_IMETHODIMP
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nsXULSliderAccessible::GetMinimumValue(double *aValue)
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{
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nsresult rv = nsAccessibleWrap::GetMinimumValue(aValue);
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// ARIA redefined minmum value.
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if (rv != NS_OK_NO_ARIA_VALUE)
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return rv;
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return GetSliderAttr(nsAccessibilityAtoms::minpos, aValue);
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}
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NS_IMETHODIMP
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nsXULSliderAccessible::GetMinimumIncrement(double *aValue)
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{
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nsresult rv = nsAccessibleWrap::GetMinimumIncrement(aValue);
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// ARIA redefined minimum increment value.
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if (rv != NS_OK_NO_ARIA_VALUE)
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return rv;
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return GetSliderAttr(nsAccessibilityAtoms::increment, aValue);
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}
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NS_IMETHODIMP
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nsXULSliderAccessible::GetCurrentValue(double *aValue)
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{
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nsresult rv = nsAccessibleWrap::GetCurrentValue(aValue);
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// ARIA redefined current value.
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if (rv != NS_OK_NO_ARIA_VALUE)
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return rv;
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return GetSliderAttr(nsAccessibilityAtoms::curpos, aValue);
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}
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NS_IMETHODIMP
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nsXULSliderAccessible::SetCurrentValue(double aValue)
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{
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nsresult rv = nsAccessibleWrap::SetCurrentValue(aValue);
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// ARIA redefined current value.
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if (rv != NS_OK_NO_ARIA_VALUE)
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return rv;
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return SetSliderAttr(nsAccessibilityAtoms::curpos, aValue);
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}
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PRBool
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nsXULSliderAccessible::GetAllowsAnonChildAccessibles()
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{
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// Do not allow anonymous xul:slider be accessible.
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return PR_FALSE;
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}
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// Utils
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already_AddRefed<nsIContent>
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nsXULSliderAccessible::GetSliderNode()
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{
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if (IsDefunct())
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return nsnull;
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if (!mSliderNode) {
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nsIDocument* document = mContent->GetOwnerDoc();
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if (!document)
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return nsnull;
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nsCOMPtr<nsIDOMDocumentXBL> xblDoc(do_QueryInterface(document));
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if (!xblDoc)
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return nsnull;
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// XXX: we depend on anonymous content.
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nsCOMPtr<nsIDOMElement> domElm(do_QueryInterface(mContent));
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if (!domElm)
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return nsnull;
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xblDoc->GetAnonymousElementByAttribute(domElm, NS_LITERAL_STRING("anonid"),
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NS_LITERAL_STRING("slider"),
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getter_AddRefs(mSliderNode));
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}
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nsIContent *sliderNode = nsnull;
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nsresult rv = CallQueryInterface(mSliderNode, &sliderNode);
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return NS_FAILED(rv) ? nsnull : sliderNode;
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}
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nsresult
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nsXULSliderAccessible::GetSliderAttr(nsIAtom *aName, nsAString& aValue)
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{
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aValue.Truncate();
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if (IsDefunct())
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return NS_ERROR_FAILURE;
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nsCOMPtr<nsIContent> sliderNode(GetSliderNode());
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NS_ENSURE_STATE(sliderNode);
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sliderNode->GetAttr(kNameSpaceID_None, aName, aValue);
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return NS_OK;
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}
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nsresult
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nsXULSliderAccessible::SetSliderAttr(nsIAtom *aName, const nsAString& aValue)
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{
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if (IsDefunct())
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return NS_ERROR_FAILURE;
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nsCOMPtr<nsIContent> sliderNode(GetSliderNode());
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NS_ENSURE_STATE(sliderNode);
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sliderNode->SetAttr(kNameSpaceID_None, aName, aValue, PR_TRUE);
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return NS_OK;
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}
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nsresult
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nsXULSliderAccessible::GetSliderAttr(nsIAtom *aName, double *aValue)
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{
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NS_ENSURE_ARG_POINTER(aValue);
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*aValue = 0;
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nsAutoString attrValue;
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nsresult rv = GetSliderAttr(aName, attrValue);
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NS_ENSURE_SUCCESS(rv, rv);
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// Return zero value if there is no attribute or its value is empty.
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if (attrValue.IsEmpty())
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return NS_OK;
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PRInt32 error = NS_OK;
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double value = attrValue.ToFloat(&error);
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if (NS_SUCCEEDED(error))
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*aValue = value;
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return NS_OK;
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}
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nsresult
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nsXULSliderAccessible::SetSliderAttr(nsIAtom *aName, double aValue)
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{
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nsAutoString value;
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value.AppendFloat(aValue);
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return SetSliderAttr(aName, value);
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}
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////////////////////////////////////////////////////////////////////////////////
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// nsXULThumbAccessible
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////////////////////////////////////////////////////////////////////////////////
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nsXULThumbAccessible::
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nsXULThumbAccessible(nsIContent *aContent, nsIWeakReference *aShell) :
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nsAccessibleWrap(aContent, aShell)
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{
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}
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////////////////////////////////////////////////////////////////////////////////
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// nsXULThumbAccessible: nsAccessible
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PRUint32
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nsXULThumbAccessible::NativeRole()
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{
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return nsIAccessibleRole::ROLE_INDICATOR;
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}
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