2007-03-22 10:30:00 -07:00
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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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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.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 2002
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Jonas Sicking <jonas@sicking.cc> (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 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 "nsXMLPrettyPrinter.h"
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#include "nsContentUtils.h"
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#include "nsIDOMDocumentView.h"
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#include "nsIDOMAbstractView.h"
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#include "nsIDOMCSSStyleDeclaration.h"
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#include "nsIDOMViewCSS.h"
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#include "nsIDOMDocumentXBL.h"
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#include "nsIObserver.h"
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#include "nsIXSLTProcessor.h"
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#include "nsSyncLoadService.h"
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#include "nsPIDOMWindow.h"
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#include "nsIDOMElement.h"
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#include "nsIDOMDocument.h"
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#include "nsIServiceManager.h"
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#include "nsNetUtil.h"
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#include "nsIContent.h"
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#include "nsIDOMDocumentFragment.h"
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#include "nsBindingManager.h"
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NS_IMPL_ISUPPORTS2(nsXMLPrettyPrinter,
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nsIDocumentObserver,
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nsIMutationObserver)
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nsXMLPrettyPrinter::nsXMLPrettyPrinter() : mDocument(nsnull),
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mUpdateDepth(0),
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mUnhookPending(PR_FALSE)
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{
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}
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nsXMLPrettyPrinter::~nsXMLPrettyPrinter()
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{
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NS_ASSERTION(!mDocument, "we shouldn't be referencing the document still");
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}
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nsresult
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2007-05-30 18:42:48 -07:00
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nsXMLPrettyPrinter::PrettyPrint(nsIDocument* aDocument,
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PRBool* aDidPrettyPrint)
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{
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*aDidPrettyPrint = PR_FALSE;
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2007-03-22 10:30:00 -07:00
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// Check for iframe with display:none. Such iframes don't have presshells
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if (!aDocument->GetShell()) {
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2007-03-22 10:30:00 -07:00
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return NS_OK;
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}
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// check if we're in an invisible iframe
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nsPIDOMWindow *internalWin = aDocument->GetWindow();
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nsCOMPtr<nsIDOMElement> frameElem;
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if (internalWin) {
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internalWin->GetFrameElement(getter_AddRefs(frameElem));
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}
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if (frameElem) {
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nsCOMPtr<nsIDOMCSSStyleDeclaration> computedStyle;
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nsCOMPtr<nsIDOMDocument> frameOwnerDoc;
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frameElem->GetOwnerDocument(getter_AddRefs(frameOwnerDoc));
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nsCOMPtr<nsIDOMDocumentView> docView = do_QueryInterface(frameOwnerDoc);
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if (docView) {
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nsCOMPtr<nsIDOMAbstractView> defaultView;
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docView->GetDefaultView(getter_AddRefs(defaultView));
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nsCOMPtr<nsIDOMViewCSS> defaultCSSView =
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do_QueryInterface(defaultView);
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if (defaultCSSView) {
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defaultCSSView->GetComputedStyle(frameElem,
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EmptyString(),
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getter_AddRefs(computedStyle));
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}
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}
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if (computedStyle) {
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nsAutoString visibility;
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computedStyle->GetPropertyValue(NS_LITERAL_STRING("visibility"),
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visibility);
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if (!visibility.EqualsLiteral("visible")) {
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return NS_OK;
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}
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}
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}
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// check the pref
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if (!nsContentUtils::GetBoolPref("layout.xml.prettyprint", PR_TRUE)) {
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return NS_OK;
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}
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// Ok, we should prettyprint. Let's do it!
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*aDidPrettyPrint = PR_TRUE;
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nsresult rv = NS_OK;
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// Load the XSLT
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nsCOMPtr<nsIURI> xslUri;
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rv = NS_NewURI(getter_AddRefs(xslUri),
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NS_LITERAL_CSTRING("chrome://global/content/xml/XMLPrettyPrint.xsl"));
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NS_ENSURE_SUCCESS(rv, rv);
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nsCOMPtr<nsIDOMDocument> xslDocument;
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rv = nsSyncLoadService::LoadDocument(xslUri, nsnull, nsnull, PR_TRUE,
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getter_AddRefs(xslDocument));
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NS_ENSURE_SUCCESS(rv, rv);
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// Transform the document
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nsCOMPtr<nsIXSLTProcessor> transformer =
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do_CreateInstance("@mozilla.org/document-transformer;1?type=xslt", &rv);
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NS_ENSURE_SUCCESS(rv, rv);
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rv = transformer->ImportStylesheet(xslDocument);
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NS_ENSURE_SUCCESS(rv, rv);
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nsCOMPtr<nsIDOMDocumentFragment> resultFragment;
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nsCOMPtr<nsIDOMDocument> sourceDocument = do_QueryInterface(aDocument);
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rv = transformer->TransformToFragment(sourceDocument, sourceDocument,
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getter_AddRefs(resultFragment));
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NS_ENSURE_SUCCESS(rv, rv);
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// Add the binding
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nsCOMPtr<nsIDOMDocumentXBL> xblDoc = do_QueryInterface(aDocument);
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NS_ASSERTION(xblDoc, "xml document doesn't implement nsIDOMDocumentXBL");
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NS_ENSURE_TRUE(xblDoc, NS_ERROR_FAILURE);
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2007-06-12 14:56:06 -07:00
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xblDoc->LoadBindingDocument(NS_LITERAL_STRING("chrome://global/content/xml/XMLPrettyPrint.xml"));
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nsCOMPtr<nsIDOMElement> rootElem;
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sourceDocument->GetDocumentElement(getter_AddRefs(rootElem));
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NS_ENSURE_TRUE(rootElem, NS_ERROR_UNEXPECTED);
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rv = xblDoc->AddBinding(rootElem,
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NS_LITERAL_STRING("chrome://global/content/xml/XMLPrettyPrint.xml#prettyprint"));
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NS_ENSURE_SUCCESS(rv, rv);
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// Hand the result document to the binding
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nsCOMPtr<nsIObserver> binding;
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nsCOMPtr<nsIContent> rootCont = do_QueryInterface(rootElem);
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NS_ASSERTION(rootCont, "Element doesn't implement nsIContent");
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aDocument->BindingManager()->GetBindingImplementation(rootCont,
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NS_GET_IID(nsIObserver),
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(void**)getter_AddRefs(binding));
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NS_ASSERTION(binding, "Prettyprint binding doesn't implement nsIObserver");
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NS_ENSURE_TRUE(binding, NS_ERROR_UNEXPECTED);
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rv = binding->Observe(resultFragment, "prettyprint-dom-created",
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EmptyString().get());
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NS_ENSURE_SUCCESS(rv, rv);
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// Observe the document so we know when to switch to "normal" view
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aDocument->AddObserver(this);
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mDocument = aDocument;
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NS_ADDREF_THIS();
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return NS_OK;
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}
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void
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nsXMLPrettyPrinter::MaybeUnhook(nsIContent* aContent)
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{
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// If there either aContent is null (the document-node was modified) or
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// there isn't a binding parent we know it's non-anonymous content.
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if (!aContent || !aContent->GetBindingParent()) {
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mUnhookPending = PR_TRUE;
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}
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}
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// nsIDocumentObserver implementation
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void
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nsXMLPrettyPrinter::BeginUpdate(nsIDocument* aDocument,
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nsUpdateType aUpdateType)
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{
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mUpdateDepth++;
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}
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void
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nsXMLPrettyPrinter::EndUpdate(nsIDocument* aDocument, nsUpdateType aUpdateType)
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{
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mUpdateDepth--;
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// Only remove the binding once we're outside all updates. This protects us
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// from nasty surprices of elements being removed from the document in the
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// midst of setting attributes etc.
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if (mUnhookPending && mUpdateDepth == 0) {
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mDocument->RemoveObserver(this);
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nsCOMPtr<nsIDOMDocument> document = do_QueryInterface(mDocument);
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nsCOMPtr<nsIDOMElement> rootElem;
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document->GetDocumentElement(getter_AddRefs(rootElem));
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if (rootElem) {
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nsCOMPtr<nsIDOMDocumentXBL> xblDoc = do_QueryInterface(mDocument);
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xblDoc->RemoveBinding(rootElem,
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NS_LITERAL_STRING("chrome://global/content/xml/XMLPrettyPrint.xml#prettyprint"));
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}
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mDocument = nsnull;
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NS_RELEASE_THIS();
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}
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}
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void
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nsXMLPrettyPrinter::AttributeChanged(nsIDocument* aDocument,
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nsIContent* aContent,
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PRInt32 aNameSpaceID,
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nsIAtom* aAttribute,
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PRInt32 aModType)
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{
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MaybeUnhook(aContent);
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}
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void
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nsXMLPrettyPrinter::ContentAppended(nsIDocument* aDocument,
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nsIContent* aContainer,
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nsIContent* aFirstNewContent,
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PRInt32 aNewIndexInContainer)
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{
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MaybeUnhook(aContainer);
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}
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void
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nsXMLPrettyPrinter::ContentInserted(nsIDocument* aDocument,
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nsIContent* aContainer,
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nsIContent* aChild,
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PRInt32 aIndexInContainer)
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{
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MaybeUnhook(aContainer);
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}
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void
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nsXMLPrettyPrinter::ContentRemoved(nsIDocument* aDocument,
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nsIContent* aContainer,
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nsIContent* aChild,
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PRInt32 aIndexInContainer)
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{
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MaybeUnhook(aContainer);
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}
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void
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nsXMLPrettyPrinter::NodeWillBeDestroyed(const nsINode* aNode)
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{
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mDocument = nsnull;
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NS_RELEASE_THIS();
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}
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nsresult NS_NewXMLPrettyPrinter(nsXMLPrettyPrinter** aPrinter)
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{
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*aPrinter = new nsXMLPrettyPrinter;
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NS_ENSURE_TRUE(*aPrinter, NS_ERROR_OUT_OF_MEMORY);
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NS_ADDREF(*aPrinter);
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return NS_OK;
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}
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