395 lines
10 KiB
C++
Executable File
395 lines
10 KiB
C++
Executable File
/* -*- 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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#ifdef DEBUG
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//#define DEBUG_XF_OUTPUT
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#endif
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#include "nsIXTFXMLVisual.h"
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#include "nsIXTFXMLVisualWrapper.h"
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#include "nsAutoPtr.h"
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#include "nsCOMPtr.h"
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#include "nsMemory.h"
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#include "nsString.h"
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#include "nsIDOM3Node.h"
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#include "nsIDOMDocument.h"
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#include "nsIDOMElement.h"
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#include "nsIDOMEventTarget.h"
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#include "nsIDOMXPathExpression.h"
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#include "nsIDOMXPathResult.h"
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#include "nsISchema.h"
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#include "nsIModelElementPrivate.h"
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#include "nsIXFormsControl.h"
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#include "nsXFormsAtoms.h"
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#include "nsXFormsUtils.h"
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static const nsIID sScriptingIIDs[] = {
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NS_IDOMELEMENT_IID,
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NS_IDOM3NODE_IID,
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NS_IDOMEVENTTARGET_IID
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};
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/**
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* Implementation of the XForms \<output\> element.
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*
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* @see http://www.w3.org/TR/xforms/slice8.html#ui-output
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*/
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class nsXFormsOutputElement : public nsIXTFXMLVisual,
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public nsIXFormsControl
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{
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public:
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NS_DECL_ISUPPORTS
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NS_DECL_NSIXTFXMLVISUAL
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NS_DECL_NSIXTFVISUAL
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NS_DECL_NSIXTFELEMENT
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NS_DECL_NSIXFORMSCONTROL
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nsXFormsOutputElement() : mElement(nsnull) {}
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private:
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nsCOMPtr<nsIDOMElement> mHTMLElement;
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nsIDOMElement *mElement;
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};
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NS_IMPL_ADDREF(nsXFormsOutputElement)
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NS_IMPL_RELEASE(nsXFormsOutputElement)
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NS_INTERFACE_MAP_BEGIN(nsXFormsOutputElement)
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NS_INTERFACE_MAP_ENTRY(nsIXTFXMLVisual)
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NS_INTERFACE_MAP_ENTRY(nsIXTFElement)
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NS_INTERFACE_MAP_ENTRY(nsIXFormsControl)
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NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIXTFXMLVisual)
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NS_INTERFACE_MAP_END
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// nsIXTFXMLVisual
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NS_IMETHODIMP
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nsXFormsOutputElement::OnCreated(nsIXTFXMLVisualWrapper *aWrapper)
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{
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#ifdef DEBUG_XF_OUTPUT
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printf("nsXFormsOutputElement::OnCreated()\n");
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#endif
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aWrapper->SetNotificationMask(nsIXTFElement::NOTIFY_WILL_SET_ATTRIBUTE |
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nsIXTFElement::NOTIFY_ATTRIBUTE_SET |
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nsIXTFElement::NOTIFY_PARENT_CHANGED);
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nsresult rv;
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nsCOMPtr<nsIDOMElement> node;
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rv = aWrapper->GetElementNode(getter_AddRefs(node));
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NS_ENSURE_SUCCESS(rv, rv);
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// It's ok to keep a weak pointer to mElement. mElement will have an
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// owning reference to this object, so as long as we null out mElement in
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// OnDestroyed, it will always be valid.
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mElement = node;
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NS_ASSERTION(mElement, "Wrapper is not an nsIDOMElement, we'll crash soon");
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nsCOMPtr<nsIDOMDocument> domDoc;
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rv = node->GetOwnerDocument(getter_AddRefs(domDoc));
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NS_ENSURE_SUCCESS(rv, rv);
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rv = domDoc->CreateElementNS(NS_LITERAL_STRING(NS_NAMESPACE_XHTML),
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NS_LITERAL_STRING("span"),
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getter_AddRefs(mHTMLElement));
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NS_ENSURE_SUCCESS(rv, rv);
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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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nsXFormsOutputElement::GetVisualContent(nsIDOMElement **aElement)
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{
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NS_IF_ADDREF(*aElement = mHTMLElement);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsXFormsOutputElement::GetInsertionPoint(nsIDOMElement **aElement)
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{
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NS_IF_ADDREF(*aElement = mHTMLElement);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsXFormsOutputElement::GetApplyDocumentStyleSheets(PRBool *aApply)
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{
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*aApply = PR_TRUE;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsXFormsOutputElement::DidLayout()
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{
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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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nsXFormsOutputElement::OnDestroyed()
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{
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mElement = nsnull;
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mHTMLElement = nsnull;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsXFormsOutputElement::GetElementType(PRUint32 *aType)
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{
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*aType = ELEMENT_TYPE_XML_VISUAL;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsXFormsOutputElement::GetIsAttributeHandler(PRBool *aIsHandler)
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{
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*aIsHandler = PR_FALSE;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsXFormsOutputElement::GetScriptingInterfaces(PRUint32 *aCount, nsIID ***aArray)
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{
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return nsXFormsUtils::CloneScriptingInterfaces(sScriptingIIDs,
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NS_ARRAY_LENGTH(sScriptingIIDs),
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aCount, aArray);
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}
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NS_IMETHODIMP
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nsXFormsOutputElement::WillChangeDocument(nsIDOMDocument *aNewDocument)
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{
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return NS_OK;
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}
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NS_IMETHODIMP
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nsXFormsOutputElement::DocumentChanged(nsIDOMDocument *aNewDocument)
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{
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return NS_OK;
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}
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NS_IMETHODIMP
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nsXFormsOutputElement::WillChangeParent(nsIDOMElement *aNewParent)
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{
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return NS_OK;
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}
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NS_IMETHODIMP
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nsXFormsOutputElement::ParentChanged(nsIDOMElement *aNewParent)
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{
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// We need to re-evaluate our instance data binding when our parent
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// changes, since xmlns declarations in effect could have changed.
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if (aNewParent) {
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Refresh();
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}
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return NS_OK;
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}
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NS_IMETHODIMP
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nsXFormsOutputElement::WillInsertChild(nsIDOMNode *aChild, PRUint32 aIndex)
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{
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return NS_OK;
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}
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NS_IMETHODIMP
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nsXFormsOutputElement::ChildInserted(nsIDOMNode *aChild, PRUint32 aIndex)
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{
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return NS_OK;
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}
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NS_IMETHODIMP
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nsXFormsOutputElement::WillAppendChild(nsIDOMNode *aChild)
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{
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return NS_OK;
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}
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NS_IMETHODIMP
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nsXFormsOutputElement::ChildAppended(nsIDOMNode *aChild)
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{
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return NS_OK;
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}
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NS_IMETHODIMP
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nsXFormsOutputElement::WillRemoveChild(PRUint32 aIndex)
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{
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return NS_OK;
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}
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NS_IMETHODIMP
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nsXFormsOutputElement::ChildRemoved(PRUint32 aIndex)
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{
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return NS_OK;
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}
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NS_IMETHODIMP
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nsXFormsOutputElement::WillSetAttribute(nsIAtom *aName, const nsAString &aValue)
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{
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if (aName == nsXFormsAtoms::bind || aName == nsXFormsAtoms::ref) {
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nsCOMPtr<nsIDOMElement> bindElement;
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nsCOMPtr<nsIModelElementPrivate> model;
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model = do_QueryInterface(
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nsXFormsUtils::GetModelAndBind(mElement,
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nsXFormsUtils::ELEMENT_WITH_MODEL_ATTR,
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getter_AddRefs(bindElement)));
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if (model)
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model->RemoveFormControl(this);
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}
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return NS_OK;
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}
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NS_IMETHODIMP
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nsXFormsOutputElement::AttributeSet(nsIAtom *aName, const nsAString &aValue)
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{
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if (aName == nsXFormsAtoms::bind || aName == nsXFormsAtoms::ref) {
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Refresh();
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}
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return NS_OK;
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}
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NS_IMETHODIMP
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nsXFormsOutputElement::WillRemoveAttribute(nsIAtom *aName)
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{
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return NS_OK;
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}
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NS_IMETHODIMP
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nsXFormsOutputElement::AttributeRemoved(nsIAtom *aName)
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{
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return NS_OK;
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}
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NS_IMETHODIMP
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nsXFormsOutputElement::DoneAddingChildren()
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{
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return NS_OK;
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}
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NS_IMETHODIMP
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nsXFormsOutputElement::HandleDefault(nsIDOMEvent *aEvent, PRBool *aHandled)
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{
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*aHandled = PR_FALSE;
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return NS_OK;
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}
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// other methods
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NS_IMETHODIMP
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nsXFormsOutputElement::Refresh()
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{
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#ifdef DEBUG_XF_OUTPUT
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printf("nsXFormsOutputElement::Refresh()\n");
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#endif
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if (!mHTMLElement)
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return NS_OK;
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nsresult rv;
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PRBool hasRef;
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rv = mElement->HasAttribute(NS_LITERAL_STRING("ref"), &hasRef);
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NS_ENSURE_SUCCESS(rv, rv);
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nsCOMPtr<nsIDOMNode> modelNode;
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nsCOMPtr<nsIDOMElement> bindElement;
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nsCOMPtr<nsIDOMXPathResult> result;
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if (hasRef) {
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result = nsXFormsUtils::EvaluateNodeBinding(mElement,
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nsXFormsUtils::ELEMENT_WITH_MODEL_ATTR,
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NS_LITERAL_STRING("ref"),
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EmptyString(),
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nsIDOMXPathResult::FIRST_ORDERED_NODE_TYPE,
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getter_AddRefs(modelNode),
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getter_AddRefs(bindElement));
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} else {
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result = nsXFormsUtils::EvaluateNodeBinding(mElement,
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nsXFormsUtils::ELEMENT_WITH_MODEL_ATTR,
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NS_LITERAL_STRING("value"),
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EmptyString(),
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nsIDOMXPathResult::STRING_TYPE,
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getter_AddRefs(modelNode),
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getter_AddRefs(bindElement));
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}
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nsCOMPtr<nsIModelElementPrivate> model = do_QueryInterface(modelNode);
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if (model) {
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model->AddFormControl(this);
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if (result) {
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nsAutoString text;
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if (hasRef) {
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nsCOMPtr<nsIDOMNode> resultNode;
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result->GetSingleNodeValue(getter_AddRefs(resultNode));
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nsXFormsUtils::GetNodeValue(resultNode, text);
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} else {
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rv = result->GetStringValue(text);
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NS_ENSURE_SUCCESS(rv, rv);
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}
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nsCOMPtr<nsIDOM3Node> dom3Node = do_QueryInterface(mHTMLElement);
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NS_ENSURE_TRUE(mHTMLElement, NS_ERROR_FAILURE);
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rv = dom3Node->SetTextContent(text);
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NS_ENSURE_SUCCESS(rv, rv);
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}
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}
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return NS_OK;
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}
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NS_HIDDEN_(nsresult)
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NS_NewXFormsOutputElement(nsIXTFElement **aResult)
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{
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*aResult = new nsXFormsOutputElement();
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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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