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/*
* Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
#include "third_party/blink/renderer/modules/accessibility/ax_progress_indicator.h"
#include "third_party/blink/renderer/core/html/html_progress_element.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"
#include "third_party/blink/renderer/platform/wtf/math_extras.h"
namespace blink {
// We can't assume that layout_object is always a `LayoutProgress`.
// Depending on CSS styles, a <progress> element may
// instead have a generic `LayoutObject`.
// See the `HTMLProgressElement` class for more information.
AXProgressIndicator::AXProgressIndicator(LayoutObject* layout_object,
AXObjectCacheImpl& ax_object_cache)
: AXNodeObject(layout_object, ax_object_cache) {
DCHECK(layout_object);
DCHECK(IsA<HTMLProgressElement>(layout_object->GetNode()))
<< "The layout object's node isn't an HTMLProgressElement.";
}
ax::mojom::blink::Role AXProgressIndicator::NativeRoleIgnoringAria() const {
return ax::mojom::blink::Role::kProgressIndicator;
}
bool AXProgressIndicator::ValueForRange(float* out_value) const {
if (AriaFloatAttribute(html_names::kAriaValuenowAttr, out_value)) {
return true;
}
if (GetProgressElement()->position() >= 0) {
*out_value = ClampTo<float>(GetProgressElement()->value());
return true;
}
// Indeterminate progress bar has no value.
return false;
}
bool AXProgressIndicator::MaxValueForRange(float* out_value) const {
if (AriaFloatAttribute(html_names::kAriaValuemaxAttr, out_value)) {
return true;
}
*out_value = ClampTo<float>(GetProgressElement()->max());
return true;
}
bool AXProgressIndicator::MinValueForRange(float* out_value) const {
if (AriaFloatAttribute(html_names::kAriaValueminAttr, out_value)) {
return true;
}
*out_value = 0.0f;
return true;
}
HTMLProgressElement* AXProgressIndicator::GetProgressElement() const {
return DynamicTo<HTMLProgressElement>(GetNode());
}
} // namespace blink
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