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nsXFormsFormControlsAccessible.cpp

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
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 * The Original Code is mozilla.org code.
 *
 * The Initial Developer of the Original Code is
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 * Portions created by the Initial Developer are Copyright (C) 2006
 * the Initial Developer. All Rights Reserved.
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 * Contributor(s):
 *   Alexander Surkov <surkov.alexander@gmail.com> (original author)
 *
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 * either of the GNU General Public License Version 2 or later (the "GPL"),
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#include "nsXFormsFormControlsAccessible.h"

// nsXFormsLabelAccessible

nsXFormsLabelAccessible::
  nsXFormsLabelAccessible(nsIDOMNode *aNode, nsIWeakReference *aShell):
  nsXFormsAccessible(aNode, aShell)
{
}

NS_IMETHODIMP
nsXFormsLabelAccessible::GetRole(PRUint32 *aRole)
{
  NS_ENSURE_ARG_POINTER(aRole);

  *aRole = nsIAccessibleRole::ROLE_LABEL;
  return NS_OK;
}

NS_IMETHODIMP
nsXFormsLabelAccessible::GetName(nsAString& aName)
{
  nsAutoString name;
  nsresult rv = GetTextFromRelationID(nsAccessibilityAtoms::aria_labelledby, name);
  aName = name;
  return rv;
}

NS_IMETHODIMP
nsXFormsLabelAccessible::GetDescription(nsAString& aDescription)
{
  nsAutoString description;
  nsresult rv = GetTextFromRelationID(nsAccessibilityAtoms::aria_describedby, description);
  aDescription = description;
  return rv;
}

// nsXFormsOutputAccessible

nsXFormsOutputAccessible::
  nsXFormsOutputAccessible(nsIDOMNode *aNode, nsIWeakReference *aShell):
  nsXFormsAccessible(aNode, aShell)
{
}

NS_IMETHODIMP
nsXFormsOutputAccessible::GetRole(PRUint32 *aRole)
{
  NS_ENSURE_ARG_POINTER(aRole);

  *aRole = nsIAccessibleRole::ROLE_STATICTEXT;
  return NS_OK;
}

// nsXFormsTriggerAccessible

nsXFormsTriggerAccessible::
  nsXFormsTriggerAccessible(nsIDOMNode *aNode, nsIWeakReference *aShell):
  nsXFormsAccessible(aNode, aShell)
{
}

NS_IMETHODIMP
nsXFormsTriggerAccessible::GetRole(PRUint32 *aRole)
{
  NS_ENSURE_ARG_POINTER(aRole);

  *aRole = nsIAccessibleRole::ROLE_PUSHBUTTON;
  return NS_OK;
}

NS_IMETHODIMP
nsXFormsTriggerAccessible::GetValue(nsAString& aValue)
{
  aValue.Truncate();
  return NS_OK;
}

NS_IMETHODIMP
nsXFormsTriggerAccessible::GetNumActions(PRUint8 *aCount)
{
  NS_ENSURE_ARG_POINTER(aCount);

  *aCount = 1;
  return NS_OK;
}

NS_IMETHODIMP
nsXFormsTriggerAccessible::GetActionName(PRUint8 aIndex, nsAString& aName)
{
  if (aIndex == eAction_Click) {
    aName.AssignLiteral("press");
    return NS_OK;
  }
  return NS_ERROR_INVALID_ARG;
}

NS_IMETHODIMP
nsXFormsTriggerAccessible::DoAction(PRUint8 aIndex)
{
  if (aIndex == eAction_Click)
    return DoCommand();

  return NS_ERROR_INVALID_ARG;
}

// nsXFormsInputAccessible

nsXFormsInputAccessible::
  nsXFormsInputAccessible(nsIDOMNode *aNode, nsIWeakReference *aShell):
  nsXFormsEditableAccessible(aNode, aShell)
{
}

NS_IMPL_ISUPPORTS_INHERITED3(nsXFormsInputAccessible, nsAccessible, nsHyperTextAccessible, nsIAccessibleText, nsIAccessibleEditableText)

NS_IMETHODIMP
nsXFormsInputAccessible::GetRole(PRUint32 *aRole)
{
  NS_ENSURE_ARG_POINTER(aRole);

  *aRole = nsIAccessibleRole::ROLE_ENTRY;
  return NS_OK;
}

NS_IMETHODIMP
nsXFormsInputAccessible::GetNumActions(PRUint8* aCount)
{
  NS_ENSURE_ARG_POINTER(aCount);

  *aCount = 1;
  return NS_OK;
}

NS_IMETHODIMP
nsXFormsInputAccessible::GetActionName(PRUint8 aIndex, nsAString& aName)
{
  if (aIndex != eAction_Click)
    return NS_ERROR_INVALID_ARG;

  aName.AssignLiteral("activate");
  return NS_OK;
}

NS_IMETHODIMP
nsXFormsInputAccessible::DoAction(PRUint8 aIndex)
{
  if (aIndex != eAction_Click)
    return NS_ERROR_INVALID_ARG;

  return sXFormsService->Focus(mDOMNode);
}

// nsXFormsInputBooleanAccessible

nsXFormsInputBooleanAccessible::
  nsXFormsInputBooleanAccessible(nsIDOMNode *aNode, nsIWeakReference *aShell):
  nsXFormsAccessible(aNode, aShell)
{
}

NS_IMETHODIMP
nsXFormsInputBooleanAccessible::GetRole(PRUint32 *aRole)
{
  NS_ENSURE_ARG_POINTER(aRole);

  *aRole = nsIAccessibleRole::ROLE_CHECKBUTTON;
  return NS_OK;
}

NS_IMETHODIMP
nsXFormsInputBooleanAccessible::GetState(PRUint32 *aState, PRUint32 *aExtraState)
{
  nsresult rv = nsXFormsAccessible::GetState(aState, aExtraState);
  NS_ENSURE_SUCCESS(rv, rv);
  if (!mDOMNode)
    return NS_OK;

  nsAutoString value;
  rv = sXFormsService->GetValue(mDOMNode, value);
  NS_ENSURE_SUCCESS(rv, rv);

  if (value.EqualsLiteral("true"))
    *aState |= nsIAccessibleStates::STATE_CHECKED;

  return NS_OK;
}

NS_IMETHODIMP
nsXFormsInputBooleanAccessible::GetNumActions(PRUint8 *aCount)
{
  NS_ENSURE_ARG_POINTER(aCount);

  *aCount = 1;
  return NS_OK;
}

NS_IMETHODIMP
nsXFormsInputBooleanAccessible::GetActionName(PRUint8 aIndex, nsAString& aName)
{
  if (aIndex != eAction_Click)
    return NS_ERROR_INVALID_ARG;

  nsAutoString value;
  nsresult rv = sXFormsService->GetValue(mDOMNode, value);
  NS_ENSURE_SUCCESS(rv, rv);

  if (value.EqualsLiteral("true"))
    aName.AssignLiteral("uncheck");
  else
    aName.AssignLiteral("check");

  return NS_OK;
}

NS_IMETHODIMP
nsXFormsInputBooleanAccessible::DoAction(PRUint8 aIndex)
{
  if (aIndex != eAction_Click)
    return NS_ERROR_INVALID_ARG;

  return DoCommand();
}

// nsXFormsInputDateAccessible

nsXFormsInputDateAccessible::
  nsXFormsInputDateAccessible(nsIDOMNode *aNode, nsIWeakReference *aShell):
  nsXFormsContainerAccessible(aNode, aShell)
{
}

NS_IMETHODIMP
nsXFormsInputDateAccessible::GetRole(PRUint32 *aRole)
{
  NS_ENSURE_ARG_POINTER(aRole);

  *aRole = nsIAccessibleRole::ROLE_DROPLIST;
  return NS_OK;
}

// nsXFormsSecretAccessible

nsXFormsSecretAccessible::
  nsXFormsSecretAccessible(nsIDOMNode *aNode, nsIWeakReference *aShell):
  nsXFormsInputAccessible(aNode, aShell)
{
}

NS_IMETHODIMP
nsXFormsSecretAccessible::GetRole(PRUint32 *aRole)
{
  NS_ENSURE_ARG_POINTER(aRole);

  *aRole = nsIAccessibleRole::ROLE_PASSWORD_TEXT;
  return NS_OK;
}

NS_IMETHODIMP
nsXFormsSecretAccessible::GetState(PRUint32 *aState, PRUint32 *aExtraState)
{
  nsresult rv = nsXFormsInputAccessible::GetState(aState, aExtraState);
  NS_ENSURE_SUCCESS(rv, rv);
  if (!mDOMNode)
    return NS_OK;

  *aState |= nsIAccessibleStates::STATE_PROTECTED;
  return NS_OK;
}

NS_IMETHODIMP
nsXFormsSecretAccessible::GetValue(nsAString& aValue)
{
  return NS_ERROR_FAILURE;
}


// nsXFormsRangeAccessible

nsXFormsRangeAccessible::
  nsXFormsRangeAccessible(nsIDOMNode *aNode, nsIWeakReference *aShell):
  nsXFormsAccessible(aNode, aShell)
{
}

NS_IMETHODIMP
nsXFormsRangeAccessible::GetRole(PRUint32 *aRole)
{
  NS_ENSURE_ARG_POINTER(aRole);

  *aRole = nsIAccessibleRole::ROLE_SLIDER;
  return NS_OK;
}

NS_IMETHODIMP
nsXFormsRangeAccessible::GetState(PRUint32 *aState, PRUint32 *aExtraState)
{
  nsresult rv = nsXFormsAccessible::GetState(aState, aExtraState);
  NS_ENSURE_SUCCESS(rv, rv);
  if (!mDOMNode)
    return NS_OK;

  PRUint32 isInRange = nsIXFormsUtilityService::STATE_NOT_A_RANGE;
  rv = sXFormsService->IsInRange(mDOMNode, &isInRange);
  NS_ENSURE_SUCCESS(rv, rv);

  if (isInRange == nsIXFormsUtilityService::STATE_OUT_OF_RANGE)
    *aState |= nsIAccessibleStates::STATE_INVALID;

  return NS_OK;
}

NS_IMETHODIMP
nsXFormsRangeAccessible::GetMaximumValue(double *aMaximumValue)
{
  NS_ENSURE_ARG_POINTER(aMaximumValue);

  nsAutoString value;
  nsresult rv = sXFormsService->GetRangeEnd(mDOMNode, value);
  NS_ENSURE_SUCCESS(rv, rv);

  PRInt32 error = NS_OK;
  *aMaximumValue = value.ToFloat(&error);
  return error;
}

NS_IMETHODIMP
nsXFormsRangeAccessible::GetMinimumValue(double *aMinimumValue)
{
  NS_ENSURE_ARG_POINTER(aMinimumValue);

  nsAutoString value;
  nsresult rv = sXFormsService->GetRangeStart(mDOMNode, value);
  NS_ENSURE_SUCCESS(rv, rv);

  PRInt32 error = NS_OK;
  *aMinimumValue = value.ToFloat(&error);
  return error;
}

NS_IMETHODIMP
nsXFormsRangeAccessible::GetMinimumIncrement(double *aMinimumIncrement)
{
  NS_ENSURE_ARG_POINTER(aMinimumIncrement);

  nsAutoString value;
  nsresult rv = sXFormsService->GetRangeStep(mDOMNode, value);
  NS_ENSURE_SUCCESS(rv, rv);

  PRInt32 error = NS_OK;
  *aMinimumIncrement = value.ToFloat(&error);
  return error;
}

NS_IMETHODIMP
nsXFormsRangeAccessible::GetCurrentValue(double *aCurrentValue)
{
  NS_ENSURE_ARG_POINTER(aCurrentValue);

  nsAutoString value;
  nsresult rv = sXFormsService->GetValue(mDOMNode, value);
  NS_ENSURE_SUCCESS(rv, rv);

  PRInt32 error = NS_OK;
  *aCurrentValue = value.ToFloat(&error);
  return error;
}


// nsXFormsSelectAccessible

nsXFormsSelectAccessible::
  nsXFormsSelectAccessible(nsIDOMNode *aNode, nsIWeakReference *aShell):
  nsXFormsContainerAccessible(aNode, aShell)
{
}

NS_IMETHODIMP
nsXFormsSelectAccessible::GetState(PRUint32 *aState, PRUint32 *aExtraState)
{
  nsresult rv = nsXFormsContainerAccessible::GetState(aState, aExtraState);
  NS_ENSURE_SUCCESS(rv, rv);
  if (!mDOMNode)
    return NS_OK;

  PRUint32 isInRange = nsIXFormsUtilityService::STATE_NOT_A_RANGE;
  rv = sXFormsService->IsInRange(mDOMNode, &isInRange);
  NS_ENSURE_SUCCESS(rv, rv);

  if (isInRange == nsIXFormsUtilityService::STATE_OUT_OF_RANGE)
    *aState |= nsIAccessibleStates::STATE_INVALID;

  return NS_OK;
}



// nsXFormsChoicesAccessible

nsXFormsChoicesAccessible::
  nsXFormsChoicesAccessible(nsIDOMNode *aNode, nsIWeakReference *aShell):
  nsXFormsAccessible(aNode, aShell)
{
}

NS_IMETHODIMP
nsXFormsChoicesAccessible::GetRole(PRUint32 *aRole)
{
  NS_ENSURE_ARG_POINTER(aRole);

  *aRole = nsIAccessibleRole::ROLE_GROUPING;
  return NS_OK;
}

NS_IMETHODIMP
nsXFormsChoicesAccessible::GetValue(nsAString& aValue)
{
  aValue.Truncate();
  return NS_OK;
}

void
nsXFormsChoicesAccessible::CacheChildren()
{
  CacheSelectChildren();
}


// nsXFormsSelectFullAccessible

nsXFormsSelectFullAccessible::
  nsXFormsSelectFullAccessible(nsIDOMNode *aNode, nsIWeakReference *aShell):
  nsXFormsSelectableAccessible(aNode, aShell)
{
}

NS_IMETHODIMP
nsXFormsSelectFullAccessible::GetRole(PRUint32 *aRole)
{
  NS_ENSURE_ARG_POINTER(aRole);

  *aRole = nsIAccessibleRole::ROLE_GROUPING;
  return NS_OK;
}

void
nsXFormsSelectFullAccessible::CacheChildren()
{
  CacheSelectChildren();
}


// nsXFormsItemCheckgroupAccessible

nsXFormsItemCheckgroupAccessible::
  nsXFormsItemCheckgroupAccessible(nsIDOMNode *aNode, nsIWeakReference *aShell):
  nsXFormsSelectableItemAccessible(aNode, aShell)
{
}

NS_IMETHODIMP
nsXFormsItemCheckgroupAccessible::GetRole(PRUint32 *aRole)
{
  NS_ENSURE_ARG_POINTER(aRole);

  *aRole = nsIAccessibleRole::ROLE_CHECKBUTTON;
  return NS_OK;
}

NS_IMETHODIMP
nsXFormsItemCheckgroupAccessible::GetState(PRUint32 *aState,
                                           PRUint32 *aExtraState)
{
  nsresult rv = nsXFormsSelectableItemAccessible::GetState(aState, aExtraState);
  NS_ENSURE_SUCCESS(rv, rv);
  if (!mDOMNode)
    return NS_OK;

  if (IsItemSelected())
    *aState |= nsIAccessibleStates::STATE_CHECKED;

  return NS_OK;
}

NS_IMETHODIMP
nsXFormsItemCheckgroupAccessible::GetActionName(PRUint8 aIndex, nsAString& aName)
{
  if (aIndex != eAction_Click)
    return NS_ERROR_INVALID_ARG;

  if (IsItemSelected())
    aName.AssignLiteral("uncheck");
  else
    aName.AssignLiteral("check");

  return NS_OK;
}


// nsXFormsItemRadiogroupAccessible

nsXFormsItemRadiogroupAccessible::
  nsXFormsItemRadiogroupAccessible(nsIDOMNode *aNode, nsIWeakReference *aShell):
  nsXFormsSelectableItemAccessible(aNode, aShell)
{
}

NS_IMETHODIMP
nsXFormsItemRadiogroupAccessible::GetRole(PRUint32 *aRole)
{
  NS_ENSURE_ARG_POINTER(aRole);

  *aRole = nsIAccessibleRole::ROLE_RADIOBUTTON;
  return NS_OK;
}

NS_IMETHODIMP
nsXFormsItemRadiogroupAccessible::GetState(PRUint32 *aState,
                                           PRUint32 *aExtraState)
{
  nsresult rv = nsXFormsSelectableItemAccessible::GetState(aState, aExtraState);
  NS_ENSURE_SUCCESS(rv, rv);
  if (!mDOMNode)
    return NS_OK;

  if (IsItemSelected())
    *aState |= nsIAccessibleStates::STATE_CHECKED;

  return NS_OK;
}

NS_IMETHODIMP
nsXFormsItemRadiogroupAccessible::GetActionName(PRUint8 aIndex, nsAString& aName)
{
  if (aIndex != eAction_Click)
    return NS_ERROR_INVALID_ARG;

  aName.AssignLiteral("select");
  return NS_OK;
}


// nsXFormsSelectComboboxAccessible

nsXFormsSelectComboboxAccessible::
  nsXFormsSelectComboboxAccessible(nsIDOMNode *aNode, nsIWeakReference *aShell):
  nsXFormsSelectableAccessible(aNode, aShell)
{
}

NS_IMETHODIMP
nsXFormsSelectComboboxAccessible::GetRole(PRUint32 *aRole)
{
  NS_ENSURE_ARG_POINTER(aRole);

  *aRole = nsIAccessibleRole::ROLE_COMBOBOX;
  return NS_OK;
}

NS_IMETHODIMP
nsXFormsSelectComboboxAccessible::GetState(PRUint32 *aState,
                                           PRUint32 *aExtraState)
{
  nsresult rv = nsXFormsSelectableAccessible::GetState(aState, aExtraState);
  NS_ENSURE_SUCCESS(rv, rv);
  if (!mDOMNode)
    return NS_OK;

  PRBool isOpen = PR_FALSE;
  rv = sXFormsService->IsDropmarkerOpen(mDOMNode, &isOpen);
  NS_ENSURE_SUCCESS(rv, rv);

  if (isOpen)
    *aState = nsIAccessibleStates::STATE_EXPANDED;
  else
    *aState = nsIAccessibleStates::STATE_COLLAPSED;

  *aState |= nsIAccessibleStates::STATE_HASPOPUP |
             nsIAccessibleStates::STATE_FOCUSABLE;
  return NS_OK;
}

NS_IMETHODIMP
nsXFormsSelectComboboxAccessible::GetAllowsAnonChildAccessibles(PRBool *aAllowsAnonChildren)
{
  NS_ENSURE_ARG_POINTER(aAllowsAnonChildren);

  *aAllowsAnonChildren = PR_TRUE;
  return NS_OK;
}


// nsXFormsItemComboboxAccessible

nsXFormsItemComboboxAccessible::
  nsXFormsItemComboboxAccessible(nsIDOMNode *aNode, nsIWeakReference *aShell):
  nsXFormsSelectableItemAccessible(aNode, aShell)
{
}

NS_IMETHODIMP
nsXFormsItemComboboxAccessible::GetRole(PRUint32 *aRole)
{
  NS_ENSURE_ARG_POINTER(aRole);

  *aRole = nsIAccessibleRole::ROLE_LISTITEM;
  return NS_OK;
}

NS_IMETHODIMP
nsXFormsItemComboboxAccessible::GetState(PRUint32 *aState,
                                         PRUint32 *aExtraState)
{
  nsresult rv = nsXFormsSelectableItemAccessible::GetState(aState, aExtraState);
  NS_ENSURE_SUCCESS(rv, rv);
  if (!mDOMNode || (*aState & nsIAccessibleStates::STATE_UNAVAILABLE))
    return NS_OK;

  *aState |= nsIAccessibleStates::STATE_SELECTABLE;
  if (IsItemSelected())
    *aState |= nsIAccessibleStates::STATE_SELECTED;

  return NS_OK;
}

NS_IMETHODIMP
nsXFormsItemComboboxAccessible::GetActionName(PRUint8 aIndex, nsAString& aName)
{
  if (aIndex != eAction_Click)
    return NS_ERROR_INVALID_ARG;

  aName.AssignLiteral("select");
  return NS_OK;
}


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