blob: 35b87ee82e2d7a8cc228192a53c3597b4dc4c0ab [file] [log] [blame]
// Copyright 2017 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef THIRD_PARTY_BLINK_RENDERER_CORE_AOM_COMPUTED_ACCESSIBLE_NODE_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_AOM_COMPUTED_ACCESSIBLE_NODE_H_
#include "third_party/blink/public/platform/web_computed_ax_tree.h"
#include "third_party/blink/renderer/bindings/core/v8/script_promise.h"
#include "third_party/blink/renderer/bindings/core/v8/script_promise_resolver.h"
#include "third_party/blink/renderer/core/accessibility/ax_context.h"
#include "third_party/blink/renderer/core/accessibility/ax_object_cache.h"
#include "third_party/blink/renderer/core/dom/element.h"
#include "third_party/blink/renderer/core/dom/events/event_target.h"
#include "third_party/blink/renderer/core/frame/local_frame.h"
#include "third_party/blink/renderer/platform/bindings/script_wrappable.h"
#include "third_party/blink/renderer/platform/wtf/text/wtf_string.h"
namespace blink {
class Document;
class ScriptState;
class ComputedAccessibleNodePromiseResolver final
: public GarbageCollected<ComputedAccessibleNodePromiseResolver> {
public:
ComputedAccessibleNodePromiseResolver(ScriptState*, Element&);
~ComputedAccessibleNodePromiseResolver() {}
ScriptPromise Promise();
void ComputeAccessibleNode();
void EnsureUpToDate();
void Trace(Visitor*);
private:
void UpdateTreeAndResolve();
class RequestAnimationFrameCallback;
int continue_callback_request_id_ = 0;
Member<Element> element_;
Member<ScriptPromiseResolver> resolver_;
bool resolve_with_node_;
std::unique_ptr<AXContext> ax_context_;
};
class ComputedAccessibleNode : public ScriptWrappable {
DEFINE_WRAPPERTYPEINFO();
public:
ComputedAccessibleNode(AXID, WebComputedAXTree*, Document*);
~ComputedAccessibleNode() override = default;
void Trace(Visitor*) override;
// TODO(meredithl): add accessors for state properties.
base::Optional<bool> atomic() const;
base::Optional<bool> busy() const;
base::Optional<bool> disabled() const;
base::Optional<bool> readOnly() const;
base::Optional<bool> expanded() const;
base::Optional<bool> modal() const;
base::Optional<bool> multiline() const;
base::Optional<bool> multiselectable() const;
base::Optional<bool> required() const;
base::Optional<bool> selected() const;
base::Optional<int32_t> colCount() const;
base::Optional<int32_t> colIndex() const;
base::Optional<int32_t> colSpan() const;
base::Optional<int32_t> level() const;
base::Optional<int32_t> posInSet() const;
base::Optional<int32_t> rowCount() const;
base::Optional<int32_t> rowIndex() const;
base::Optional<int32_t> rowSpan() const;
base::Optional<int32_t> setSize() const;
base::Optional<float> valueMax() const;
base::Optional<float> valueMin() const;
base::Optional<float> valueNow() const;
const String autocomplete() const;
const String checked() const;
const String keyShortcuts() const;
const String name() const;
const String placeholder() const;
const String role() const;
const String roleDescription() const;
const String valueText() const;
ComputedAccessibleNode* parent() const;
ComputedAccessibleNode* firstChild() const;
ComputedAccessibleNode* lastChild() const;
ComputedAccessibleNode* previousSibling() const;
ComputedAccessibleNode* nextSibling() const;
ScriptPromise ensureUpToDate(ScriptState*);
private:
base::Optional<bool> GetBoolAttribute(WebAOMBoolAttribute) const;
base::Optional<int32_t> GetIntAttribute(WebAOMIntAttribute) const;
base::Optional<float> GetFloatAttribute(WebAOMFloatAttribute) const;
const String GetStringAttribute(WebAOMStringAttribute) const;
AXID ax_id_;
// This tree is owned by the RenderFrame.
blink::WebComputedAXTree* tree_;
Member<Document> document_;
std::unique_ptr<AXContext> ax_context_;
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_CORE_AOM_COMPUTED_ACCESSIBLE_NODE_H_