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/*
* Copyright (C) 2009 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "third_party/blink/renderer/modules/accessibility/ax_slider.h"
#include "third_party/blink/renderer/core/dom/shadow_root.h"
#include "third_party/blink/renderer/core/html/forms/html_input_element.h"
#include "third_party/blink/renderer/core/html/shadow/shadow_element_names.h"
#include "third_party/blink/renderer/core/layout/layout_object.h"
#include "third_party/blink/renderer/modules/accessibility/ax_object-inl.h"
#include "third_party/blink/renderer/modules/accessibility/ax_object_cache_impl.h"
namespace blink {
AXSlider::AXSlider(LayoutObject* layout_object,
AXObjectCacheImpl& ax_object_cache)
: AXNodeObject(layout_object, ax_object_cache) {}
ax::mojom::blink::Role AXSlider::NativeRoleIgnoringAria() const {
return ax::mojom::blink::Role::kSlider;
}
AccessibilityOrientation AXSlider::Orientation() const {
// Default to horizontal in the unknown case.
if (!GetLayoutObject()) {
return kAccessibilityOrientationHorizontal;
}
const ComputedStyle* style = GetLayoutObject()->Style();
if (!style)
return kAccessibilityOrientationHorizontal;
// If CSS writing-mode is vertical, return kAccessibilityOrientationVertical.
if (!style->IsHorizontalWritingMode()) {
return kAccessibilityOrientationVertical;
}
// Else, look at the CSS appearance property for slider orientation.
switch (style->EffectiveAppearance()) {
case AppearanceValue::kSliderThumbHorizontal:
case AppearanceValue::kSliderHorizontal:
case AppearanceValue::kMediaSlider:
return kAccessibilityOrientationHorizontal;
case AppearanceValue::kSliderVertical:
return RuntimeEnabledFeatures::
NonStandardAppearanceValueSliderVerticalEnabled()
? kAccessibilityOrientationVertical
: kAccessibilityOrientationHorizontal;
case AppearanceValue::kSliderThumbVertical:
case AppearanceValue::kMediaVolumeSlider:
return kAccessibilityOrientationVertical;
default:
return kAccessibilityOrientationHorizontal;
}
}
bool AXSlider::OnNativeSetValueAction(const String& value) {
HTMLInputElement* input = GetInputElement();
if (input->Value() == value)
return false;
input->SetValue(value, TextFieldEventBehavior::kDispatchInputAndChangeEvent);
// Fire change event manually, as SliderThumbElement::StopDragging does.
input->DispatchFormControlChangeEvent();
// Dispatching an event could result in changes to the document, like
// this AXObject becoming detached.
if (IsDetached())
return false;
// Ensure the AX node is updated.
AXObjectCache().HandleValueChanged(GetNode());
return true;
}
HTMLInputElement* AXSlider::GetInputElement() const {
return To<HTMLInputElement>(GetNode());
}
} // namespace blink
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