RetroZilla/accessible/src/atk/nsXULFormControlAccessibleWrap.cpp

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/* ***** BEGIN LICENSE BLOCK *****
 * Version: NPL 1.1/GPL 2.0/LGPL 2.1
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 * 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
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 *
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 * The Original Code is mozilla.org code.
 *
 * The Initial Developer of the Original Code is Sun Microsystems, Inc.
 * Portions created by Sun Microsystems are Copyright (C) 2002 Sun
 * Microsystems, Inc. All Rights Reserved.
 *
 * Original Author:  Gilbert Fang (gilbert.fang@sun.com)
 *
 * Contributor(s):
 *   Kyle Yuan (kyle.yuan@sun.com)
 *
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 * either the GNU General Public License Version 2 or later (the "GPL"), or
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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#include "nsIDOMElement.h"
#include "nsXULFormControlAccessibleWrap.h"
#include "nsIFrame.h"
#include "nsIPresShell.h"
#include "nsIDOMHTMLInputElement.h"
#include "nsIDOMXULTextboxElement.h"

NS_IMPL_ISUPPORTS_INHERITED1(nsXULProgressMeterAccessibleWrap, nsXULProgressMeterAccessible, nsIAccessibleValue)

nsXULProgressMeterAccessibleWrap::nsXULProgressMeterAccessibleWrap(nsIDOMNode* aNode, nsIWeakReference* aShell):
nsXULProgressMeterAccessible(aNode, aShell)
{
}

/* readonly attribute double maximumValue; */
NS_IMETHODIMP nsXULProgressMeterAccessibleWrap::GetMaximumValue(double *aMaximumValue)
{
  *aMaximumValue = 1; // 100% = 1;
  return NS_OK;
}

/* readonly attribute double minimumValue; */
NS_IMETHODIMP nsXULProgressMeterAccessibleWrap::GetMinimumValue(double *aMinimumValue)
{
  *aMinimumValue = 0;
  return NS_OK;
}

/* readonly attribute double currentValue; */
NS_IMETHODIMP nsXULProgressMeterAccessibleWrap::GetCurrentValue(double *aCurrentValue)
{
  nsAutoString currentValue;
  GetValue(currentValue);
  PRInt32 error;
  *aCurrentValue = currentValue.ToFloat(&error) / 100;
  return NS_OK;
}

/* boolean setCurrentValue (in double value); */
NS_IMETHODIMP nsXULProgressMeterAccessibleWrap::SetCurrentValue(double aValue, PRBool *_retval)
{
  //Here I do not suppose the min/max are 0/1.00 because I want
  // these part of code to be more extensible.
  *_retval = PR_FALSE;
  double min, max;
  GetMinimumValue(&min);
  GetMaximumValue(&max);
  if (aValue > max || aValue < min)
    return NS_ERROR_INVALID_ARG;

  nsCOMPtr<nsIDOMElement> element(do_QueryInterface(mDOMNode));
  NS_ASSERTION(element, "No element for DOM node!");
  PRUint32 value = PRUint32(aValue * 100.0 + 0.5);
  nsAutoString valueString;
  valueString.AppendInt(value);
  valueString.AppendLiteral("%");
  if (NS_SUCCEEDED(element->SetAttribute(NS_LITERAL_STRING("value"), valueString))) {
    *_retval = PR_TRUE;
    return NS_OK;
  }
  return NS_ERROR_INVALID_ARG;
}

NS_IMPL_ISUPPORTS_INHERITED2(nsXULTextFieldAccessibleWrap, nsXULTextFieldAccessible, nsIAccessibleText, nsIAccessibleEditableText)

nsXULTextFieldAccessibleWrap::nsXULTextFieldAccessibleWrap(nsIDOMNode* aNode, nsIWeakReference* aShell):
nsXULTextFieldAccessible(aNode, aShell), nsAccessibleEditableText(aNode)
{
  nsCOMPtr<nsIDOMXULTextBoxElement> textBox(do_QueryInterface(aNode));
  NS_ASSERTION(textBox, "Not a XUL textbox!");
  if (!textBox)
    return;

  textBox->GetInputField(getter_AddRefs(mTextNode));
  if (!mTextNode)
    return;

  nsCOMPtr<nsIPresShell> shell(do_QueryReferent(mWeakShell));
  if (!shell)
    return;

  nsIFrame* frame = nsnull;
  nsCOMPtr<nsIContent> content(do_QueryInterface(mTextNode));
  shell->GetPrimaryFrameFor(content, &frame);

  if (!frame)
    return;

  nsITextControlFrame *textFrame;
  frame->QueryInterface(NS_GET_IID(nsITextControlFrame), (void**)&textFrame);
  if (textFrame) {
    nsCOMPtr<nsIEditor> editor;
    textFrame->GetEditor(getter_AddRefs(editor));
    SetEditor(editor);
  }
}

NS_IMETHODIMP nsXULTextFieldAccessibleWrap::GetRole(PRUint32 *aRole)
{
  PRUint32 state = 0;

  nsresult rv = GetState(&state);
  if (NS_SUCCEEDED(rv) && (state & STATE_PROTECTED))
    *aRole = ROLE_PASSWORD_TEXT;
  else
    *aRole = ROLE_TEXT;

  return NS_OK;
}

NS_IMETHODIMP nsXULTextFieldAccessibleWrap::GetExtState(PRUint32 *aExtState)
{
  nsAccessibleWrap::GetExtState(aExtState);

  PRUint32 state;
  nsXULTextFieldAccessible::GetState(&state);
  if (!(state & STATE_READONLY))
    *aExtState |= EXT_STATE_EDITABLE;
  return NS_OK;
}

NS_IMETHODIMP nsXULTextFieldAccessibleWrap::Shutdown()
{
  nsAccessibleEditableText::ShutdownEditor();
  return nsXULTextFieldAccessible::Shutdown();
}