257 lines
7.1 KiB
C++
257 lines
7.1 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Mozilla XForms support.
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*
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* The Initial Developer of the Original Code is
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* Novell, Inc.
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* Portions created by the Initial Developer are Copyright (C) 2004
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Allan Beaufour <abeaufour@novell.com>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "nsAutoPtr.h"
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#include "nsCOMPtr.h"
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#include "nsString.h"
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#include "nsIDOM3Node.h"
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#include "nsIDOMElement.h"
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#include "nsIDOMDocument.h"
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#include "nsIDOMEventTarget.h"
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#include "nsIDOMXPathResult.h"
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#include "nsIDOMHTMLDivElement.h"
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#include "nsIXTFXMLVisual.h"
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#include "nsIXTFXMLVisualWrapper.h"
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#include "nsXFormsControlStub.h"
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#include "nsIXFormsContextControl.h"
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#include "nsIModelElementPrivate.h"
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#include "nsXFormsUtils.h"
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#ifdef DEBUG
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// #define DEBUG_XF_GROUP
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#endif
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/**
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* Implementation of the XForms \<group\> control.
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*
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* @see http://www.w3.org/TR/xforms/slice9.html#id2631290
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*
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* @todo If a \<label\> is the first element child for \<group\> it is the
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* label for the entire group
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*
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* @todo "Setting the input focus on a group results in the focus being set to
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* the first form control in the navigation order within that group."
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* (spec. 9.1.1)
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*
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* @bug If a group only has a model attribute, the group fails to set this for
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* children, as it is impossible to distinguish between a failure and absence
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* of binding attributes when calling ProcessNodeBinding().
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*/
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class nsXFormsGroupElement : public nsXFormsControlStub,
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public nsIXFormsContextControl
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{
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protected:
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/** The UI HTML element used to represent the tag */
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nsCOMPtr<nsIDOMHTMLDivElement> mHTMLElement;
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/** The current ID of the model node is bound to */
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nsString mModelID;
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public:
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NS_DECL_ISUPPORTS_INHERITED
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// Constructor
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nsXFormsGroupElement();
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~nsXFormsGroupElement();
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// nsIXTFXMLVisual overrides
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NS_IMETHOD OnCreated(nsIXTFXMLVisualWrapper *aWrapper);
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// nsIXTFVisual overrides
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NS_IMETHOD GetVisualContent(nsIDOMElement **aElement);
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NS_IMETHOD GetInsertionPoint(nsIDOMElement **aElement);
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// nsIXTFElement overrides
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NS_IMETHOD OnDestroyed();
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// nsIXFormsControl
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NS_IMETHOD Refresh();
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// nsIXFormsContextControl
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NS_DECL_NSIXFORMSCONTEXTCONTROL
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};
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NS_IMPL_ISUPPORTS_INHERITED2(nsXFormsGroupElement,
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nsXFormsXMLVisualStub,
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nsIXFormsControl,
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nsIXFormsContextControl)
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MOZ_DECL_CTOR_COUNTER(nsXFormsGroupElement)
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nsXFormsGroupElement::nsXFormsGroupElement()
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{
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MOZ_COUNT_CTOR(nsXFormsGroupElement);
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}
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nsXFormsGroupElement::~nsXFormsGroupElement()
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{
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MOZ_COUNT_DTOR(nsXFormsGroupElement);
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}
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// nsIXTFXMLVisual
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NS_IMETHODIMP
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nsXFormsGroupElement::OnCreated(nsIXTFXMLVisualWrapper *aWrapper)
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{
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#ifdef DEBUG_XF_GROUP
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printf("nsXFormsGroupElement::OnCreated(aWrapper=%p)\n", (void*) aWrapper);
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#endif
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nsresult rv = nsXFormsControlStub::OnCreated(aWrapper);
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NS_ENSURE_SUCCESS(rv, rv);
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// Create HTML tag
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nsCOMPtr<nsIDOMDocument> domDoc;
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mElement->GetOwnerDocument(getter_AddRefs(domDoc));
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nsCOMPtr<nsIDOMElement> domElement;
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domDoc->CreateElementNS(NS_LITERAL_STRING(NS_NAMESPACE_XHTML),
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NS_LITERAL_STRING("div"),
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getter_AddRefs(domElement));
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mHTMLElement = do_QueryInterface(domElement);
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NS_ENSURE_TRUE(mHTMLElement, NS_ERROR_FAILURE);
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return NS_OK;
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}
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// nsIXTFVisual
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NS_IMETHODIMP
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nsXFormsGroupElement::GetVisualContent(nsIDOMElement * *aVisualContent)
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{
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NS_ADDREF(*aVisualContent = mHTMLElement);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsXFormsGroupElement::GetInsertionPoint(nsIDOMElement **aElement)
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{
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NS_ADDREF(*aElement = mHTMLElement);
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return NS_OK;
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}
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// nsIXTFElement
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NS_IMETHODIMP
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nsXFormsGroupElement::OnDestroyed()
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{
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mHTMLElement = nsnull;
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return nsXFormsControlStub::OnDestroyed();
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}
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// nsIXFormsControl
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NS_IMETHODIMP
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nsXFormsGroupElement::Refresh()
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{
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#ifdef DEBUG_XF_GROUP
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printf("nsXFormsGroupElement::Refresh()\n");
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#endif
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if (!mHTMLElement)
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return NS_OK;
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mModelID.Truncate();
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nsCOMPtr<nsIModelElementPrivate> modelNode;
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nsCOMPtr<nsIDOMXPathResult> result;
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nsresult rv =
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ProcessNodeBinding(NS_LITERAL_STRING("ref"),
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nsIDOMXPathResult::FIRST_ORDERED_NODE_TYPE,
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getter_AddRefs(result),
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getter_AddRefs(modelNode));
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NS_ENSURE_SUCCESS(rv, rv);
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if (!result) {
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return NS_OK;
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}
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// Get model ID
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nsCOMPtr<nsIDOMElement> modelElement = do_QueryInterface(modelNode);
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NS_ENSURE_TRUE(modelElement, NS_ERROR_FAILURE);
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modelElement->GetAttribute(NS_LITERAL_STRING("id"), mModelID);
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// Get context node, if any
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result->GetSingleNodeValue(getter_AddRefs(mBoundNode));
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NS_ENSURE_STATE(mBoundNode);
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return NS_OK;
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}
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// nsIXFormsContextControl
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NS_IMETHODIMP
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nsXFormsGroupElement::SetContextNode(nsIDOMElement *aContextNode)
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{
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return NS_ERROR_NOT_IMPLEMENTED;
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}
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nsresult
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nsXFormsGroupElement::GetContext(nsAString& aModelID,
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nsIDOMElement **aContextNode,
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PRInt32 *aContextPosition,
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PRInt32 *aContextSize)
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{
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#ifdef DEBUG_XF_GROUP
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printf("nsXFormsGroupElement::GetContext()\n");
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#endif
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NS_ENSURE_ARG(aContextSize);
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NS_ENSURE_ARG(aContextPosition);
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*aContextPosition = 1;
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*aContextSize = 1;
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if (mBoundNode && aContextNode)
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CallQueryInterface(mBoundNode, aContextNode); // addrefs
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aModelID = mModelID;
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return NS_OK;
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}
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// Factory
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NS_HIDDEN_(nsresult)
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NS_NewXFormsGroupElement(nsIXTFElement **aResult)
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{
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*aResult = new nsXFormsGroupElement();
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if (!*aResult)
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return NS_ERROR_OUT_OF_MEMORY;
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NS_ADDREF(*aResult);
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return NS_OK;
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}
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