зеркало из https://github.com/mozilla/gecko-dev.git
378 строки
11 KiB
C++
378 строки
11 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef MOZILLA_A11Y_HTMLFormControlAccessible_H_
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#define MOZILLA_A11Y_HTMLFormControlAccessible_H_
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#include "FormControlAccessible.h"
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#include "HyperTextAccessibleWrap.h"
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#include "mozilla/dom/Element.h"
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#include "AccAttributes.h"
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#include "nsAccUtils.h"
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#include "Relation.h"
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namespace mozilla {
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class EditorBase;
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namespace a11y {
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/**
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* Accessible for HTML input@type="radio" element.
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*/
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class HTMLRadioButtonAccessible : public RadioButtonAccessible {
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public:
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HTMLRadioButtonAccessible(nsIContent* aContent, DocAccessible* aDoc)
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: RadioButtonAccessible(aContent, aDoc) {
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// Ignore "RadioStateChange" DOM event in lieu of document observer
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// state change notification.
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mStateFlags |= eIgnoreDOMUIEvent;
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}
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// LocalAccessible
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virtual uint64_t NativeState() const override;
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virtual Relation RelationByType(RelationType aType) const override;
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protected:
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virtual void GetPositionAndSetSize(int32_t* aPosInSet,
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int32_t* aSetSize) override;
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private:
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Relation ComputeGroupAttributes(int32_t* aPosInSet, int32_t* aSetSize) const;
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};
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/**
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* Accessible for HTML input@type="button", @type="submit", @type="image"
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* and HTML button elements.
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*/
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class HTMLButtonAccessible : public HyperTextAccessibleWrap {
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public:
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enum { eAction_Click = 0 };
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HTMLButtonAccessible(nsIContent* aContent, DocAccessible* aDoc);
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// LocalAccessible
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virtual mozilla::a11y::role NativeRole() const override;
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virtual uint64_t State() override;
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virtual uint64_t NativeState() const override;
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// ActionAccessible
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virtual uint8_t ActionCount() const override;
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virtual void ActionNameAt(uint8_t aIndex, nsAString& aName) override;
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virtual bool DoAction(uint8_t aIndex) const override;
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// Widgets
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virtual bool IsWidget() const override;
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protected:
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// LocalAccessible
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virtual ENameValueFlag NativeName(nsString& aName) const override;
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virtual void DOMAttributeChanged(int32_t aNameSpaceID, nsAtom* aAttribute,
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int32_t aModType,
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const nsAttrValue* aOldValue,
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uint64_t aOldState) override;
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};
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/**
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* Accessible for HTML input@type="text", input@type="password", textarea
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* and other HTML text controls.
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*/
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class HTMLTextFieldAccessible : public HyperTextAccessibleWrap {
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public:
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enum { eAction_Click = 0 };
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HTMLTextFieldAccessible(nsIContent* aContent, DocAccessible* aDoc);
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NS_INLINE_DECL_REFCOUNTING_INHERITED(HTMLTextFieldAccessible,
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HyperTextAccessibleWrap)
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// HyperTextAccessible
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MOZ_CAN_RUN_SCRIPT_BOUNDARY virtual already_AddRefed<EditorBase> GetEditor()
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const override;
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// LocalAccessible
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virtual void Value(nsString& aValue) const override;
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virtual void ApplyARIAState(uint64_t* aState) const override;
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virtual mozilla::a11y::role NativeRole() const override;
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virtual uint64_t NativeState() const override;
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virtual already_AddRefed<AccAttributes> NativeAttributes() override;
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virtual bool AttributeChangesState(nsAtom* aAttribute) override;
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// ActionAccessible
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virtual uint8_t ActionCount() const override;
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virtual void ActionNameAt(uint8_t aIndex, nsAString& aName) override;
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virtual bool DoAction(uint8_t aIndex) const override;
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// Widgets
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virtual bool IsWidget() const override;
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virtual LocalAccessible* ContainerWidget() const override;
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protected:
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virtual ~HTMLTextFieldAccessible() {}
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// LocalAccessible
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virtual ENameValueFlag NativeName(nsString& aName) const override;
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};
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/**
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* Accessible for input@type="file" element.
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*/
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class HTMLFileInputAccessible : public HyperTextAccessibleWrap {
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public:
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HTMLFileInputAccessible(nsIContent* aContent, DocAccessible* aDoc);
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// LocalAccessible
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virtual mozilla::a11y::role NativeRole() const override;
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virtual nsresult HandleAccEvent(AccEvent* aAccEvent) override;
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virtual LocalAccessible* CurrentItem() const override;
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};
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/**
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* Used for HTML input@type="number".
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*/
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class HTMLSpinnerAccessible final : public HTMLTextFieldAccessible {
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public:
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HTMLSpinnerAccessible(nsIContent* aContent, DocAccessible* aDoc)
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: HTMLTextFieldAccessible(aContent, aDoc) {
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mGenericTypes |= eNumericValue;
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}
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// LocalAccessible
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virtual mozilla::a11y::role NativeRole() const override;
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virtual void Value(nsString& aValue) const override;
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virtual double MaxValue() const override;
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virtual double MinValue() const override;
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virtual double CurValue() const override;
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virtual double Step() const override;
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virtual bool SetCurValue(double aValue) override;
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};
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/**
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* Used for input@type="range" element.
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*/
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class HTMLRangeAccessible : public LeafAccessible {
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public:
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HTMLRangeAccessible(nsIContent* aContent, DocAccessible* aDoc)
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: LeafAccessible(aContent, aDoc) {
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mGenericTypes |= eNumericValue;
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}
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// LocalAccessible
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virtual void Value(nsString& aValue) const override;
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virtual mozilla::a11y::role NativeRole() const override;
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// Value
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virtual double MaxValue() const override;
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virtual double MinValue() const override;
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virtual double CurValue() const override;
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virtual double Step() const override;
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virtual bool SetCurValue(double aValue) override;
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// Widgets
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virtual bool IsWidget() const override;
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};
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/**
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* Accessible for HTML fieldset element.
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*/
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class HTMLGroupboxAccessible : public HyperTextAccessibleWrap {
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public:
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HTMLGroupboxAccessible(nsIContent* aContent, DocAccessible* aDoc);
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// LocalAccessible
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virtual mozilla::a11y::role NativeRole() const override;
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virtual Relation RelationByType(RelationType aType) const override;
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protected:
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// LocalAccessible
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virtual ENameValueFlag NativeName(nsString& aName) const override;
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// HTMLGroupboxAccessible
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nsIContent* GetLegend() const;
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};
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/**
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* Accessible for HTML legend element.
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*/
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class HTMLLegendAccessible : public HyperTextAccessibleWrap {
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public:
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HTMLLegendAccessible(nsIContent* aContent, DocAccessible* aDoc);
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// LocalAccessible
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virtual Relation RelationByType(RelationType aType) const override;
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};
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/**
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* Accessible for HTML5 figure element.
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*/
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class HTMLFigureAccessible : public HyperTextAccessibleWrap {
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public:
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HTMLFigureAccessible(nsIContent* aContent, DocAccessible* aDoc);
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// LocalAccessible
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virtual Relation RelationByType(RelationType aType) const override;
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protected:
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// LocalAccessible
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virtual ENameValueFlag NativeName(nsString& aName) const override;
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// HTMLLegendAccessible
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nsIContent* Caption() const;
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};
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/**
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* Accessible for HTML5 figcaption element.
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*/
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class HTMLFigcaptionAccessible : public HyperTextAccessibleWrap {
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public:
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HTMLFigcaptionAccessible(nsIContent* aContent, DocAccessible* aDoc);
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// LocalAccessible
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virtual Relation RelationByType(RelationType aType) const override;
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};
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/**
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* Used for HTML form element.
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*/
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class HTMLFormAccessible : public HyperTextAccessibleWrap {
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public:
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HTMLFormAccessible(nsIContent* aContent, DocAccessible* aDoc)
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: HyperTextAccessibleWrap(aContent, aDoc) {}
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NS_INLINE_DECL_REFCOUNTING_INHERITED(HTMLFormAccessible,
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HyperTextAccessibleWrap)
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// LocalAccessible
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virtual nsAtom* LandmarkRole() const override;
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virtual a11y::role NativeRole() const override;
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protected:
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virtual void DOMAttributeChanged(int32_t aNameSpaceID, nsAtom* aAttribute,
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int32_t aModType,
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const nsAttrValue* aOldValue,
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uint64_t aOldState) override;
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virtual ~HTMLFormAccessible() = default;
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};
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/**
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* Accessible for HTML progress element.
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*/
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class HTMLProgressAccessible : public LeafAccessible {
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public:
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HTMLProgressAccessible(nsIContent* aContent, DocAccessible* aDoc)
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: LeafAccessible(aContent, aDoc) {
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// Ignore 'ValueChange' DOM event in lieu of @value attribute change
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// notifications.
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mStateFlags |= eIgnoreDOMUIEvent;
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mGenericTypes |= eNumericValue;
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mType = eProgressType;
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}
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// LocalAccessible
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virtual void Value(nsString& aValue) const override;
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virtual mozilla::a11y::role NativeRole() const override;
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virtual uint64_t NativeState() const override;
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// Value
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virtual double MaxValue() const override;
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virtual double MinValue() const override;
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virtual double CurValue() const override;
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virtual double Step() const override;
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virtual bool SetCurValue(double aValue) override;
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// Widgets
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virtual bool IsWidget() const override;
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protected:
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virtual ~HTMLProgressAccessible() {}
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virtual void DOMAttributeChanged(int32_t aNameSpaceID, nsAtom* aAttribute,
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int32_t aModType,
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const nsAttrValue* aOldValue,
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uint64_t aOldState) override;
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};
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/**
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* Accessible for HTML meter element.
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*/
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class HTMLMeterAccessible : public LeafAccessible {
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public:
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HTMLMeterAccessible(nsIContent* aContent, DocAccessible* aDoc)
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: LeafAccessible(aContent, aDoc) {
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// Ignore 'ValueChange' DOM event in lieu of @value attribute change
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// notifications.
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mStateFlags |= eIgnoreDOMUIEvent;
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mGenericTypes |= eNumericValue;
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mType = eProgressType;
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}
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// LocalAccessible
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virtual void Value(nsString& aValue) const override;
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virtual mozilla::a11y::role NativeRole() const override;
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// Value
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virtual double MaxValue() const override;
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virtual double MinValue() const override;
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virtual double CurValue() const override;
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virtual bool SetCurValue(double aValue) override;
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// Widgets
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virtual bool IsWidget() const override;
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protected:
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virtual ~HTMLMeterAccessible() {}
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virtual void DOMAttributeChanged(int32_t aNameSpaceID, nsAtom* aAttribute,
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int32_t aModType,
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const nsAttrValue* aOldValue,
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uint64_t aOldState) override;
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};
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/**
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* Accessible for HTML date/time inputs.
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*/
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template <a11y::role R>
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class HTMLDateTimeAccessible : public HyperTextAccessibleWrap {
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public:
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HTMLDateTimeAccessible(nsIContent* aContent, DocAccessible* aDoc)
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: HyperTextAccessibleWrap(aContent, aDoc) {
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mType = eHTMLDateTimeFieldType;
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}
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NS_INLINE_DECL_REFCOUNTING_INHERITED(HTMLDateTimeAccessible,
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HyperTextAccessibleWrap)
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// LocalAccessible
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virtual mozilla::a11y::role NativeRole() const override { return R; }
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virtual already_AddRefed<AccAttributes> NativeAttributes() override {
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RefPtr<AccAttributes> attributes =
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HyperTextAccessibleWrap::NativeAttributes();
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// Unfortunately, an nsStaticAtom can't be passed as a
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// template argument, so fetch the type from the DOM.
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if (const nsAttrValue* attr =
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mContent->AsElement()->GetParsedAttr(nsGkAtoms::type)) {
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RefPtr<nsAtom> inputType = attr->GetAsAtom();
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if (inputType) {
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attributes->SetAttribute(nsGkAtoms::textInputType, inputType);
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}
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}
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return attributes.forget();
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}
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// Widgets
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virtual bool IsWidget() const override { return true; }
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protected:
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virtual ~HTMLDateTimeAccessible() {}
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};
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} // namespace a11y
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} // namespace mozilla
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#endif
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