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// Copyright (c) 2006-2008 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 CHROME_COMMON_ACCESSIBILITY_H_
#define CHROME_COMMON_ACCESSIBILITY_H_
// This defines an enumeration of IDs that can uniquely identify a call to a
// specific IAccessible function. Should match the support implemented in WebKit
// (functions marked with return value E_NOTIMPL are also excluded).
enum IAccessibleID {
IACCESSIBLE_FUNC_NONE = 0,
// Supported IAccessible interface functions.
IACCESSIBLE_FUNC_ACCDODEFAULTACTION,
IACCESSIBLE_FUNC_ACCHITTEST,
IACCESSIBLE_FUNC_ACCLOCATION,
IACCESSIBLE_FUNC_ACCNAVIGATE,
IACCESSIBLE_FUNC_GET_ACCCHILD,
IACCESSIBLE_FUNC_GET_ACCCHILDCOUNT,
IACCESSIBLE_FUNC_GET_ACCDEFAULTACTION,
IACCESSIBLE_FUNC_GET_ACCDESCRIPTION,
IACCESSIBLE_FUNC_GET_ACCFOCUS,
IACCESSIBLE_FUNC_GET_ACCHELP,
IACCESSIBLE_FUNC_GET_ACCKEYBOARDSHORTCUT,
IACCESSIBLE_FUNC_GET_ACCNAME,
IACCESSIBLE_FUNC_GET_ACCPARENT,
IACCESSIBLE_FUNC_GET_ACCROLE,
IACCESSIBLE_FUNC_GET_ACCSTATE,
IACCESSIBLE_FUNC_GET_ACCVALUE
// The deprecated put_accName and put_accValue are not supported here, nor is
// accSelect, get_accHelpTopic and get_accSelection (matching WebKit's
// support).
};
// Parameters structure to hold a union of the possible IAccessible function
// INPUT variables, with the unused fields always set to default value. Used in
// ViewMsg_GetAccessibilityInfo, as only parameter.
struct AccessibilityInParams {
// Identifier to uniquely distinguish which instance of IAccessible is being
// called upon on the renderer side.
int iaccessible_id;
// Identifier to resolve which IAccessible interface function is being called.
int iaccessible_function_id;
// Function input parameters.
// Input VARIANT structure's LONG field to specify requested object.
long input_variant_lval;
// LONG input parameters, used differently depending on the function called.
long input_long1;
long input_long2;
};
// Parameters structure to hold a union of the possible IAccessible function
// OUTPUT variables, with the unused fields always set to default value. Used in
// ViewHostMsg_GetAccessibilityInfoResponse, as only parameter.
struct AccessibilityOutParams {
// Identifier to uniquely distinguish which instance of IAccessible is being
// called upon on the renderer side.
int iaccessible_id;
// Function output parameters.
// Output VARIANT structure's LONG field to specify requested object.
long output_variant_lval;
// LONG output parameters, used differently depending on the function called.
// output_long1 can in some cases be set to -1 to indicate that the child
// object found by the called IAccessible function is not a simple object.
long output_long1;
long output_long2;
long output_long3;
long output_long4;
// String output parameter.
std::wstring output_string;
// Return code, either S_OK (true) or S_FALSE (false). WebKit MSAA error
// return codes (E_POINTER, E_INVALIDARG, E_FAIL, E_NOTIMPL) must be handled
// on the browser side by input validation.
bool return_code;
};
#endif // CHROME_COMMON_ACCESSIBILITY_H_
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