зеркало из https://github.com/mozilla/pjs.git
309 строки
9.4 KiB
C++
309 строки
9.4 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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* Olli Pettay.
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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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* Olli Pettay <Olli.Pettay@helsinki.fi> (original author)
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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 of the GNU General Public License Version 2 or later (the "GPL"),
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* or 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 "nsXFormsActionElement.h"
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#include "nsIXFormsModelElement.h"
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#include "nsIDOMNodeList.h"
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#include "nsIDOMDocument.h"
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#include "nsIDOMEvent.h"
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#include "nsIDOMElement.h"
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#include "nsIXTFElementWrapper.h"
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#define DEFERRED_REBUILD 0x01
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#define DEFERRED_RECALCULATE 0x02
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#define DEFERRED_REVALIDATE 0x04
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#define DEFERRED_REFRESH 0x08
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nsXFormsActionElement::nsXFormsActionElement() : mElement(nsnull)
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{
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}
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NS_IMPL_ADDREF_INHERITED(nsXFormsActionElement, nsXFormsStubElement)
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NS_IMPL_RELEASE_INHERITED(nsXFormsActionElement, nsXFormsStubElement)
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NS_INTERFACE_MAP_BEGIN(nsXFormsActionElement)
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NS_INTERFACE_MAP_ENTRY(nsIXFormsActionModuleElement)
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NS_INTERFACE_MAP_ENTRY(nsIXFormsActionElement)
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NS_INTERFACE_MAP_ENTRY(nsIDOMEventListener)
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NS_INTERFACE_MAP_END_INHERITING(nsXFormsStubElement)
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NS_IMETHODIMP
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nsXFormsActionElement::OnCreated(nsIXTFElementWrapper* aWrapper)
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{
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nsresult rv = nsXFormsStubElement::OnCreated(aWrapper);
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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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nsCOMPtr<nsIDOMElement> node;
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aWrapper->GetElementNode(getter_AddRefs(node));
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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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aWrapper->SetNotificationMask(nsIXTFElement::NOTIFY_WILL_CHANGE_DOCUMENT |
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nsIXTFElement::NOTIFY_WILL_CHANGE_PARENT |
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nsIXTFElement::NOTIFY_DOCUMENT_CHANGED |
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nsIXTFElement::NOTIFY_PARENT_CHANGED);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsXFormsActionElement::OnDestroyed() {
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mParentAction = nsnull;
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mElement = nsnull;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsXFormsActionElement::WillChangeParent(nsIDOMElement *aNewParent)
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{
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SetRepeatState(eType_Unknown);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsXFormsActionElement::ParentChanged(nsIDOMElement *aNewParent)
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{
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nsXFormsStubElement::ParentChanged(aNewParent);
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UpdateRepeatState(aNewParent);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsXFormsActionElement::WillChangeDocument(nsIDOMDocument *aNewDocument)
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{
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SetRepeatState(eType_Unknown);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsXFormsActionElement::DocumentChanged(nsIDOMDocument *aNewDocument)
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{
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nsXFormsStubElement::DocumentChanged(aNewDocument);
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nsCOMPtr<nsIDOMNode> parent;
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mElement->GetParentNode(getter_AddRefs(parent));
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UpdateRepeatState(parent);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsXFormsActionElement::HandleEvent(nsIDOMEvent* aEvent)
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{
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if (GetRepeatState() == eType_Template) {
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return NS_OK;
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}
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return nsXFormsUtils::EventHandlingAllowed(aEvent, mElement) ?
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HandleAction(aEvent, nsnull) : NS_OK;
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}
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PR_STATIC_CALLBACK(PLDHashOperator) DoDeferredActions(nsISupports * aModel,
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PRUint32 aDeferred,
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void * data)
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{
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if (aModel && aDeferred) {
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nsCOMPtr<nsIModelElementPrivate> model(do_QueryInterface(aModel));
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if (aDeferred & DEFERRED_REBUILD)
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model->RequestRebuild();
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if (aDeferred & DEFERRED_RECALCULATE)
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model->RequestRecalculate();
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if (aDeferred & DEFERRED_REVALIDATE)
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model->RequestRevalidate();
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if (aDeferred & DEFERRED_REFRESH)
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model->RequestRefresh();
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}
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return PL_DHASH_NEXT;
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}
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NS_IMETHODIMP
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nsXFormsActionElement::HandleAction(nsIDOMEvent* aEvent,
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nsIXFormsActionElement *aParentAction)
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{
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if (!mElement) {
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return NS_OK;
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}
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if (!mDeferredUpdates.IsInitialized()) {
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NS_ENSURE_TRUE(mDeferredUpdates.Init(), NS_ERROR_OUT_OF_MEMORY);
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} else {
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mDeferredUpdates.Clear();
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}
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mParentAction = aParentAction;
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nsCOMPtr<nsIDOMNodeList> childNodes;
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mElement->GetChildNodes(getter_AddRefs(childNodes));
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if (!childNodes) {
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return NS_OK;
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}
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PRUint32 count;
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childNodes->GetLength(&count);
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nsCOMPtr<nsIXFormsActionModuleElement> actionChild;
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nsCOMPtr<nsIDOMEvent> event(aEvent);
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for (PRUint32 i = 0; i < count; ++i) {
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nsCOMPtr<nsIDOMNode> child;
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childNodes->Item(i, getter_AddRefs(child));
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actionChild = do_QueryInterface(child);
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if (actionChild) {
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actionChild->HandleAction(event, this);
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}
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}
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if (!aParentAction) { //Otherwise parent will handle deferred updates
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mDeferredUpdates.EnumerateRead(DoDeferredActions, nsnull);
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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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nsXFormsActionElement::SetRebuild(nsIModelElementPrivate* aModel,
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PRBool aEnable)
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{
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if (mParentAction) {
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return mParentAction->SetRebuild(aModel, aEnable);
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}
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PRUint32 deferred = 0;
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// It is possible that QI's to an interface that isn't nsISupports (like
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// nsIModelElementPrivate) could produce different values even from the same
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// model element. So we'll convert the model to nsISupports before querying
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// it or storing it via hashtable.
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nsCOMPtr<nsISupports> temp(do_QueryInterface(aModel));
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mDeferredUpdates.Get(temp, &deferred);
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if (aEnable) {
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deferred |= DEFERRED_REBUILD;
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} else {
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deferred &= ~DEFERRED_REBUILD;
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}
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mDeferredUpdates.Put(temp, deferred);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsXFormsActionElement::SetRecalculate(nsIModelElementPrivate* aModel,
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PRBool aEnable)
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{
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if (mParentAction) {
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return mParentAction->SetRecalculate(aModel, aEnable);
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}
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PRUint32 deferred = 0;
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// It is possible that QI's to an interface that isn't nsISupports (like
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// nsIModelElementPrivate) could produce different values even from the same
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// model element. So we'll convert the model to nsISupports before querying
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// it or storing it via hashtable.
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nsCOMPtr<nsISupports> temp(do_QueryInterface(aModel));
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mDeferredUpdates.Get(temp, &deferred);
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if (aEnable) {
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deferred |= DEFERRED_RECALCULATE;
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} else {
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deferred &= ~DEFERRED_RECALCULATE;
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}
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mDeferredUpdates.Put(temp, deferred);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsXFormsActionElement::SetRevalidate(nsIModelElementPrivate* aModel,
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PRBool aEnable)
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{
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if (mParentAction) {
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return mParentAction->SetRevalidate(aModel, aEnable);
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}
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PRUint32 deferred = 0;
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// It is possible that QI's to an interface that isn't nsISupports (like
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// nsIModelElementPrivate) could produce different values even from the same
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// model element. So we'll convert the model to nsISupports before querying
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// it or storing it via hashtable.
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nsCOMPtr<nsISupports> temp(do_QueryInterface(aModel));
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mDeferredUpdates.Get(temp, &deferred);
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if (aEnable) {
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deferred |= DEFERRED_REVALIDATE;
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} else {
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deferred &= ~DEFERRED_REVALIDATE;
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}
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mDeferredUpdates.Put(temp, deferred);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsXFormsActionElement::SetRefresh(nsIModelElementPrivate* aModel,
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PRBool aEnable)
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{
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if (mParentAction) {
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return mParentAction->SetRefresh(aModel, aEnable);
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}
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PRUint32 deferred = 0;
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// It is possible that QI's to an interface that isn't nsISupports (like
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// nsIModelElementPrivate) could produce different values even from the same
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// model element. So we'll convert the model to nsISupports before querying
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// it or storing it via hashtable.
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nsCOMPtr<nsISupports> temp(do_QueryInterface(aModel));
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mDeferredUpdates.Get(temp, &deferred);
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if (aEnable) {
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deferred |= DEFERRED_REFRESH;
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} else {
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deferred &= ~DEFERRED_REFRESH;
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}
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mDeferredUpdates.Put(temp, deferred);
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return NS_OK;
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}
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NS_HIDDEN_(nsresult)
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NS_NewXFormsActionElement(nsIXTFElement **aResult)
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{
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*aResult = new nsXFormsActionElement();
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if (!*aResult) {
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return NS_ERROR_OUT_OF_MEMORY;
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}
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NS_ADDREF(*aResult);
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return NS_OK;
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}
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