mirror of
https://github.com/mozilla/gecko-dev.git
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294 lines
8.4 KiB
C++
294 lines
8.4 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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* IBM Corporation.
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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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* Darin Fisher <darin@meer.net>
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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 "nsIDOMEventTarget.h"
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#include "nsIDOM3Node.h"
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#include "nsIDOMElement.h"
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#include "nsMemory.h"
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#include "nsCOMPtr.h"
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#include "nsString.h"
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#include "nsIXTFXMLVisualWrapper.h"
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#include "nsIDOMDocument.h"
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#include "nsXFormsControlStub.h"
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#include "nsISchema.h"
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#include "nsIDOMHTMLInputElement.h"
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#include "nsXFormsAtoms.h"
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#include "nsAutoPtr.h"
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#include "nsIDOMXPathResult.h"
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#include "nsIDOMFocusListener.h"
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#include "nsXFormsUtils.h"
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#include "nsIModelElementPrivate.h"
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#include "nsIContent.h"
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#include "nsIDOMXPathExpression.h"
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#include "nsNetUtil.h"
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#include "nsXFormsMDGEngine.h"
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static void
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ReleaseObject(void *aObject,
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nsIAtom *aPropertyName,
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void *aPropertyValue,
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void *aData)
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{
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NS_STATIC_CAST(nsISupports *, aObject)->Release();
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}
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/**
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* Implementation of the \<upload\> element.
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*/
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class nsXFormsUploadElement : public nsIDOMFocusListener,
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public nsXFormsControlStub
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{
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public:
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NS_DECL_ISUPPORTS_INHERITED
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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 **aPoint);
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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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// nsIDOMEventListener
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NS_IMETHOD HandleEvent(nsIDOMEvent *aEvent);
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// nsIDOMFocusListener
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NS_IMETHOD Focus(nsIDOMEvent *aEvent);
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NS_IMETHOD Blur(nsIDOMEvent *aEvent);
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private:
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nsCOMPtr<nsIDOMElement> mLabel;
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nsCOMPtr<nsIDOMHTMLInputElement> mInput;
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};
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NS_IMPL_ISUPPORTS_INHERITED3(nsXFormsUploadElement,
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nsXFormsXMLVisualStub,
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nsIXFormsControl,
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nsIDOMFocusListener,
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nsIDOMEventListener)
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// nsIXTFXMLVisual
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NS_IMETHODIMP
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nsXFormsUploadElement::OnCreated(nsIXTFXMLVisualWrapper *aWrapper)
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{
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nsresult rv = nsXFormsControlStub::OnCreated(aWrapper);
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NS_ENSURE_SUCCESS(rv, rv);
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// Our anonymous content structure will look like this:
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//
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// <label> (mLabel)
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// <span/> (insertion point)
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// <input/> (mInput)
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// </label>
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nsCOMPtr<nsIDOMDocument> domDoc;
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mElement->GetOwnerDocument(getter_AddRefs(domDoc));
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domDoc->CreateElementNS(NS_LITERAL_STRING(NS_NAMESPACE_XHTML),
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NS_LITERAL_STRING("label"),
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getter_AddRefs(mLabel));
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NS_ENSURE_STATE(mLabel);
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nsCOMPtr<nsIDOMElement> element;
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nsCOMPtr<nsIDOMNode> childReturn;
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domDoc->CreateElementNS(NS_LITERAL_STRING(NS_NAMESPACE_XHTML),
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NS_LITERAL_STRING("span"),
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getter_AddRefs(element));
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NS_ENSURE_STATE(element);
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mLabel->AppendChild(element, getter_AddRefs(childReturn));
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domDoc->CreateElementNS(NS_LITERAL_STRING(NS_NAMESPACE_XHTML),
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NS_LITERAL_STRING("input"),
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getter_AddRefs(element));
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mInput = do_QueryInterface(element);
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NS_ENSURE_STATE(mInput);
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mInput->SetType(NS_LITERAL_STRING("file"));
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mLabel->AppendChild(mInput, getter_AddRefs(childReturn));
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// We can't use xtf handleDefault here because editor stops blur events from
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// bubbling, and we can't use a system event group handler because blur
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// events don't go to the system event group (bug 263240). So, just install
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// a bubbling listener in the normal event group. This works out because
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// content can't get at the anonymous content to install an event handler,
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// and the event doesn't bubble up.
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nsCOMPtr<nsIDOMEventTarget> targ = do_QueryInterface(mInput);
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NS_ASSERTION(targ, "input must be an event target!");
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targ->AddEventListener(NS_LITERAL_STRING("blur"), this, PR_FALSE);
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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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nsXFormsUploadElement::GetVisualContent(nsIDOMElement **aElement)
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{
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NS_ADDREF(*aElement = mLabel);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsXFormsUploadElement::GetInsertionPoint(nsIDOMElement **aPoint)
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{
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nsCOMPtr<nsIDOMNode> childNode;
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mLabel->GetFirstChild(getter_AddRefs(childNode));
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return CallQueryInterface(childNode, aPoint);
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}
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// nsIXTFElement
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NS_IMETHODIMP
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nsXFormsUploadElement::OnDestroyed()
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{
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nsCOMPtr<nsIDOMEventTarget> targ = do_QueryInterface(mInput);
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if (NS_LIKELY(targ != nsnull)) {
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targ->RemoveEventListener(NS_LITERAL_STRING("blur"), this, PR_FALSE);
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}
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return nsXFormsControlStub::OnDestroyed();
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}
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// nsIDOMEventListener
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NS_IMETHODIMP
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nsXFormsUploadElement::HandleEvent(nsIDOMEvent *aEvent)
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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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nsXFormsUploadElement::Focus(nsIDOMEvent *aEvent)
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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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nsXFormsUploadElement::Blur(nsIDOMEvent *aEvent)
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{
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if (!mInput || mBoundNode || mMDG)
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return NS_OK;
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nsAutoString value;
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mInput->GetValue(value);
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// store the file as a property on the selected content node. the submission
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// code will read this value.
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nsCOMPtr<nsIContent> content = do_QueryInterface(mBoundNode);
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NS_ENSURE_STATE(content);
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nsILocalFile *file = nsnull;
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NS_NewLocalFile(value, PR_FALSE, &file);
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NS_ENSURE_STATE(file);
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content->SetProperty(nsXFormsAtoms::uploadFileProperty, file, ReleaseObject);
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// update the instance data node. this value is never used by the submission
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// code. instead, it exists so that the instance data will appear to be in-
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// sync with what is actually submitted.
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nsCAutoString spec;
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NS_GetURLSpecFromFile(file, spec);
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mMDG->SetNodeValue(mBoundNode, NS_ConvertUTF8toUTF16(spec));
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return NS_OK;
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}
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// nsIXFormsControl
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NS_IMETHODIMP
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nsXFormsUploadElement::Refresh()
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{
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if (!mInput)
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return NS_OK;
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mBoundNode = nsnull;
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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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NS_ENSURE_SUCCESS(rv, rv);
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if (result)
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result->GetSingleNodeValue(getter_AddRefs(mBoundNode));
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if (!mBoundNode)
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return NS_OK;
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nsCOMPtr<nsIContent> content = do_QueryInterface(mBoundNode);
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NS_ENSURE_STATE(content);
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nsILocalFile *file =
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NS_STATIC_CAST(nsILocalFile *,
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content->GetProperty(nsXFormsAtoms::uploadFileProperty));
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// get the text value for the control
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nsAutoString value;
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if (file)
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file->GetPath(value);
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mInput->SetValue(value);
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mInput->SetReadOnly(GetReadOnlyState());
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return NS_OK;
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}
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NS_HIDDEN_(nsresult)
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NS_NewXFormsUploadElement(nsIXTFElement **aResult)
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{
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*aResult = new nsXFormsUploadElement();
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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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