pjs/extensions/xforms/nsXFormsActionElement.cpp

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/* -*- 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
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Mozilla XForms support.
*
* The Initial Developer of the Original Code is
* Olli Pettay.
* Portions created by the Initial Developer are Copyright (C) 2004
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Olli Pettay <Olli.Pettay@helsinki.fi> (original author)
*
* Alternatively, the contents of this file may be used under the terms of
* either of 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"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include "nsXFormsActionElement.h"
#include "nsIXFormsModelElement.h"
#include "nsIDOMNodeList.h"
#include "nsIDOMDocument.h"
#include "nsIDOMEvent.h"
#include "nsIDOMElement.h"
#include "nsIXTFXMLVisualWrapper.h"
#define ACTION_STYLE_HIDDEN \
"position:absolute;z-index:2147483647;visibility:hidden;"
#define DEFERRED_REBUILD 0x01
#define DEFERRED_RECALCULATE 0x02
#define DEFERRED_REVALIDATE 0x04
#define DEFERRED_REFRESH 0x08
nsXFormsActionElement::nsXFormsActionElement()
{
}
NS_IMPL_ADDREF_INHERITED(nsXFormsActionElement, nsXFormsXMLVisualStub)
NS_IMPL_RELEASE_INHERITED(nsXFormsActionElement, nsXFormsXMLVisualStub)
NS_INTERFACE_MAP_BEGIN(nsXFormsActionElement)
NS_INTERFACE_MAP_ENTRY(nsIXFormsActionModuleElement)
NS_INTERFACE_MAP_ENTRY(nsIXFormsActionElement)
NS_INTERFACE_MAP_ENTRY(nsIDOMEventListener)
NS_INTERFACE_MAP_END_INHERITING(nsXFormsXMLVisualStub)
NS_IMETHODIMP
nsXFormsActionElement::OnCreated(nsIXTFXMLVisualWrapper *aWrapper)
{
nsresult rv = nsXFormsXMLVisualStub::OnCreated(aWrapper);
NS_ENSURE_SUCCESS(rv, rv);
rv = aWrapper->GetElementNode(getter_AddRefs(mElement));
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIDOMDocument> domDoc;
mElement->GetOwnerDocument(getter_AddRefs(domDoc));
rv = domDoc->CreateElementNS(NS_LITERAL_STRING(NS_NAMESPACE_XHTML),
NS_LITERAL_STRING("div"),
getter_AddRefs(mVisualElement));
NS_ENSURE_SUCCESS(rv, rv);
if (mVisualElement)
mVisualElement->SetAttribute(NS_LITERAL_STRING("style"),
NS_LITERAL_STRING(ACTION_STYLE_HIDDEN));
return NS_OK;
}
NS_IMETHODIMP
nsXFormsActionElement::GetVisualContent(nsIDOMElement **aElement)
{
NS_IF_ADDREF(*aElement = mVisualElement);
return NS_OK;
}
NS_IMETHODIMP
nsXFormsActionElement::GetInsertionPoint(nsIDOMElement **aElement)
{
NS_IF_ADDREF(*aElement = mVisualElement);
return NS_OK;
}
NS_IMETHODIMP
nsXFormsActionElement::OnDestroyed() {
mParentAction = nsnull;
mVisualElement = nsnull;
mElement = nsnull;
return NS_OK;
}
NS_IMETHODIMP
nsXFormsActionElement::HandleEvent(nsIDOMEvent* aEvent)
{
return nsXFormsUtils::EventHandlingAllowed(aEvent, mElement) ?
HandleAction(aEvent, nsnull) : NS_OK;
}
PR_STATIC_CALLBACK(PLDHashOperator) DoDeferredActions(nsISupports * aModel,
PRUint32 aDeferred,
void * data)
{
if (aModel && aDeferred) {
nsCOMPtr<nsIDOMNode> element = NS_STATIC_CAST(nsIDOMNode *, aModel);
if (aDeferred & DEFERRED_REBUILD)
nsXFormsUtils::DispatchEvent(element, eEvent_Rebuild);
if (aDeferred & DEFERRED_RECALCULATE)
nsXFormsUtils::DispatchEvent(element, eEvent_Recalculate);
if (aDeferred & DEFERRED_REVALIDATE)
nsXFormsUtils::DispatchEvent(element, eEvent_Revalidate);
if (aDeferred & DEFERRED_REFRESH)
nsXFormsUtils::DispatchEvent(element, eEvent_Refresh);
}
return PL_DHASH_NEXT;
}
NS_IMETHODIMP
nsXFormsActionElement::HandleAction(nsIDOMEvent* aEvent,
nsIXFormsActionElement *aParentAction)
{
if (!mElement)
return NS_OK;
if (!mDeferredUpdates.IsInitialized()) {
if (!mDeferredUpdates.Init())
return NS_ERROR_OUT_OF_MEMORY;
}
else {
mDeferredUpdates.Clear();
}
mParentAction = aParentAction;
nsCOMPtr<nsIDOMNodeList> childNodes;
mElement->GetChildNodes(getter_AddRefs(childNodes));
if (!childNodes)
return NS_OK;
PRUint32 count;
childNodes->GetLength(&count);
nsCOMPtr<nsIXFormsActionModuleElement> actionChild;
nsCOMPtr<nsIDOMEvent> event(aEvent);
for (PRUint32 i = 0; i < count; ++i) {
nsCOMPtr<nsIDOMNode> child;
childNodes->Item(i, getter_AddRefs(child));
actionChild = do_QueryInterface(child);
if (actionChild)
actionChild->HandleAction(event, this);
}
if (!aParentAction) //Otherwise parent will handle deferred updates
mDeferredUpdates.EnumerateRead(DoDeferredActions, nsnull);
return NS_OK;
}
NS_IMETHODIMP
nsXFormsActionElement::SetRebuild(nsIDOMNode* aModel, PRBool aEnable)
{
if (mParentAction)
return mParentAction->SetRebuild(aModel, aEnable);
PRUint32 deferred = 0;
mDeferredUpdates.Get(aModel, &deferred);
if (aEnable)
deferred |= DEFERRED_REBUILD;
else
deferred &= ~DEFERRED_REBUILD;
mDeferredUpdates.Put(aModel, deferred);
return NS_OK;
}
NS_IMETHODIMP
nsXFormsActionElement::SetRecalculate(nsIDOMNode* aModel, PRBool aEnable)
{
if (mParentAction)
return mParentAction->SetRecalculate(aModel, aEnable);
PRUint32 deferred = 0;
mDeferredUpdates.Get(aModel, &deferred);
if (aEnable)
deferred |= DEFERRED_RECALCULATE;
else
deferred &= ~DEFERRED_RECALCULATE;
mDeferredUpdates.Put(aModel, deferred);
return NS_OK;
}
NS_IMETHODIMP
nsXFormsActionElement::SetRevalidate(nsIDOMNode* aModel, PRBool aEnable)
{
if (mParentAction)
return mParentAction->SetRevalidate(aModel, aEnable);
PRUint32 deferred = 0;
mDeferredUpdates.Get(aModel, &deferred);
if (aEnable)
deferred |= DEFERRED_REVALIDATE;
else
deferred &= ~DEFERRED_REVALIDATE;
mDeferredUpdates.Put(aModel, deferred);
return NS_OK;
}
NS_IMETHODIMP
nsXFormsActionElement::SetRefresh(nsIDOMNode* aModel, PRBool aEnable)
{
if (mParentAction)
return mParentAction->SetRefresh(aModel, aEnable);
PRUint32 deferred = 0;
mDeferredUpdates.Get(aModel, &deferred);
if (aEnable)
deferred |= DEFERRED_REFRESH;
else
deferred &= ~DEFERRED_REFRESH;
mDeferredUpdates.Put(aModel, deferred);
return NS_OK;
}
NS_HIDDEN_(nsresult)
NS_NewXFormsActionElement(nsIXTFElement **aResult)
{
*aResult = new nsXFormsActionElement();
if (!*aResult)
return NS_ERROR_OUT_OF_MEMORY;
NS_ADDREF(*aResult);
return NS_OK;
}