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lightning-sunbird  0.9+nobinonly
nsXULFormControlAccessibleWrap.cpp
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00001 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
00002 /* ***** BEGIN LICENSE BLOCK *****
00003  * Version: NPL 1.1/GPL 2.0/LGPL 2.1
00004  *
00005  * The contents of this file are subject to the Mozilla Public
00006  * License Version 1.1 (the "License"); you may not use this file
00007  * except in compliance with the License. You may obtain a copy of
00008  * the License at http://www.mozilla.org/MPL/
00009  *
00010  * Software distributed under the License is distributed on an "AS
00011  * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
00012  * implied. See the License for the specific language governing
00013  * rights and limitations under the License.
00014  *
00015  * The Original Code is mozilla.org code.
00016  *
00017  * The Initial Developer of the Original Code is Sun Microsystems, Inc.
00018  * Portions created by Sun Microsystems are Copyright (C) 2002 Sun
00019  * Microsystems, Inc. All Rights Reserved.
00020  *
00021  * Original Author:  Gilbert Fang (gilbert.fang@sun.com)
00022  *
00023  * Contributor(s):
00024  *   Kyle Yuan (kyle.yuan@sun.com)
00025  *
00026  * Alternatively, the contents of this file may be used under the terms of
00027  * either the GNU General Public License Version 2 or later (the "GPL"), or
00028  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
00029  * in which case the provisions of the GPL or the LGPL are applicable instead
00030  * of those above. If you wish to allow use of your version of this file only
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00033  * decision by deleting the provisions above and replace them with the notice
00034  * and other provisions required by the GPL or the LGPL. If you do not delete
00035  * the provisions above, a recipient may use your version of this file under
00036  * the terms of any one of the NPL, the GPL or the LGPL.
00037  *
00038  * ***** END LICENSE BLOCK ***** */
00039 
00040 #include "nsIDOMElement.h"
00041 #include "nsXULFormControlAccessibleWrap.h"
00042 #include "nsIFrame.h"
00043 #include "nsIPresShell.h"
00044 #include "nsIDOMHTMLInputElement.h"
00045 #include "nsIDOMXULTextboxElement.h"
00046 
00047 NS_IMPL_ISUPPORTS_INHERITED1(nsXULProgressMeterAccessibleWrap, nsXULProgressMeterAccessible, nsIAccessibleValue)
00048 
00049 nsXULProgressMeterAccessibleWrap::nsXULProgressMeterAccessibleWrap(nsIDOMNode* aNode, nsIWeakReference* aShell):
00050 nsXULProgressMeterAccessible(aNode, aShell)
00051 {
00052 }
00053 
00054 /* readonly attribute double maximumValue; */
00055 NS_IMETHODIMP nsXULProgressMeterAccessibleWrap::GetMaximumValue(double *aMaximumValue)
00056 {
00057   *aMaximumValue = 1; // 100% = 1;
00058   return NS_OK;
00059 }
00060 
00061 /* readonly attribute double minimumValue; */
00062 NS_IMETHODIMP nsXULProgressMeterAccessibleWrap::GetMinimumValue(double *aMinimumValue)
00063 {
00064   *aMinimumValue = 0;
00065   return NS_OK;
00066 }
00067 
00068 /* readonly attribute double currentValue; */
00069 NS_IMETHODIMP nsXULProgressMeterAccessibleWrap::GetCurrentValue(double *aCurrentValue)
00070 {
00071   nsAutoString currentValue;
00072   GetValue(currentValue);
00073   PRInt32 error;
00074   *aCurrentValue = currentValue.ToFloat(&error) / 100;
00075   return NS_OK;
00076 }
00077 
00078 /* boolean setCurrentValue (in double value); */
00079 NS_IMETHODIMP nsXULProgressMeterAccessibleWrap::SetCurrentValue(double aValue, PRBool *_retval)
00080 {
00081   //Here I do not suppose the min/max are 0/1.00 because I want
00082   // these part of code to be more extensible.
00083   *_retval = PR_FALSE;
00084   double min, max;
00085   GetMinimumValue(&min);
00086   GetMaximumValue(&max);
00087   if (aValue > max || aValue < min)
00088     return NS_ERROR_INVALID_ARG;
00089 
00090   nsCOMPtr<nsIDOMElement> element(do_QueryInterface(mDOMNode));
00091   NS_ASSERTION(element, "No element for DOM node!");
00092   PRUint32 value = PRUint32(aValue * 100.0 + 0.5);
00093   nsAutoString valueString;
00094   valueString.AppendInt(value);
00095   valueString.AppendLiteral("%");
00096   if (NS_SUCCEEDED(element->SetAttribute(NS_LITERAL_STRING("value"), valueString))) {
00097     *_retval = PR_TRUE;
00098     return NS_OK;
00099   }
00100   return NS_ERROR_INVALID_ARG;
00101 }
00102 
00103 NS_IMPL_ISUPPORTS_INHERITED2(nsXULTextFieldAccessibleWrap, nsXULTextFieldAccessible, nsIAccessibleText, nsIAccessibleEditableText)
00104 
00105 nsXULTextFieldAccessibleWrap::nsXULTextFieldAccessibleWrap(nsIDOMNode* aNode, nsIWeakReference* aShell):
00106 nsXULTextFieldAccessible(aNode, aShell), nsAccessibleEditableText(aNode)
00107 {
00108   nsCOMPtr<nsIDOMXULTextBoxElement> textBox(do_QueryInterface(aNode));
00109   NS_ASSERTION(textBox, "Not a XUL textbox!");
00110   if (!textBox)
00111     return;
00112 
00113   textBox->GetInputField(getter_AddRefs(mTextNode));
00114   if (!mTextNode)
00115     return;
00116 
00117   nsCOMPtr<nsIPresShell> shell(do_QueryReferent(mWeakShell));
00118   if (!shell)
00119     return;
00120 
00121   nsIFrame* frame = nsnull;
00122   nsCOMPtr<nsIContent> content(do_QueryInterface(mTextNode));
00123   shell->GetPrimaryFrameFor(content, &frame);
00124 
00125   if (!frame)
00126     return;
00127 
00128   nsITextControlFrame *textFrame;
00129   frame->QueryInterface(NS_GET_IID(nsITextControlFrame), (void**)&textFrame);
00130   if (textFrame) {
00131     nsCOMPtr<nsIEditor> editor;
00132     textFrame->GetEditor(getter_AddRefs(editor));
00133     SetEditor(editor);
00134   }
00135 }
00136 
00137 NS_IMETHODIMP nsXULTextFieldAccessibleWrap::GetRole(PRUint32 *aRole)
00138 {
00139   PRUint32 state = 0;
00140 
00141   nsresult rv = GetState(&state);
00142   if (NS_SUCCEEDED(rv) && (state & STATE_PROTECTED))
00143     *aRole = ROLE_PASSWORD_TEXT;
00144   else
00145     *aRole = ROLE_TEXT;
00146 
00147   return NS_OK;
00148 }
00149 
00150 NS_IMETHODIMP nsXULTextFieldAccessibleWrap::GetExtState(PRUint32 *aExtState)
00151 {
00152   nsAccessibleWrap::GetExtState(aExtState);
00153 
00154   PRUint32 state;
00155   nsXULTextFieldAccessible::GetState(&state);
00156   if (!(state & STATE_READONLY))
00157     *aExtState |= EXT_STATE_EDITABLE;
00158   return NS_OK;
00159 }
00160 
00161 NS_IMETHODIMP nsXULTextFieldAccessibleWrap::Shutdown()
00162 {
00163   nsAccessibleEditableText::ShutdownEditor();
00164   return nsXULTextFieldAccessible::Shutdown();
00165 }