content/xml/document/src/nsXMLPrettyPrinter.h
author Robert Strong <robert.bugzilla@gmail.com>
Thu, 05 Feb 2009 11:12:56 -0800
changeset 23145 89a76e45e282e6911ecc8b67369ba21bb99e01b8
parent 3410 0fb3d04648744b0908fff3a45884ff9ecf8c2024
permissions -rw-r--r--
Bug 476106 - Unable to get directory path for directories immediately under some symlinks. r=jmathies

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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 * The Initial Developer of the Original Code is
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 * Contributor(s):
 *   Jonas Sicking <jonas@sicking.cc> (Original author)
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#ifndef nsXMLPrettyPrinter_h__
#define nsXMLPrettyPrinter_h__

#include "nsStubDocumentObserver.h"
#include "nsIDocument.h"
#include "nsCOMPtr.h"

class nsXMLPrettyPrinter : public nsStubDocumentObserver
{
public:
    nsXMLPrettyPrinter();
    virtual ~nsXMLPrettyPrinter();

    NS_DECL_ISUPPORTS

    // nsIDocumentObserver
    virtual void BeginUpdate(nsIDocument* aDocument, nsUpdateType aUpdateType);
    virtual void EndUpdate(nsIDocument* aDocument, nsUpdateType aUpdateType);

    // nsIMutationObserver
    NS_DECL_NSIMUTATIONOBSERVER_ATTRIBUTECHANGED
    NS_DECL_NSIMUTATIONOBSERVER_CONTENTAPPENDED
    NS_DECL_NSIMUTATIONOBSERVER_CONTENTINSERTED
    NS_DECL_NSIMUTATIONOBSERVER_CONTENTREMOVED
    NS_DECL_NSIMUTATIONOBSERVER_NODEWILLBEDESTROYED
    
    /**
     * This will prettyprint the document if the document is loaded in a
     * displayed window.
     *
     * @param aDocument  document to prettyprint
     * @param [out] aDidPrettyPrint if true, and error not returned, actually
     *              went ahead with prettyprinting the document.
     */
    nsresult PrettyPrint(nsIDocument* aDocument, PRBool* aDidPrettyPrint);

private:
    /**
     * Signals for unhooking by setting mUnhookPending if the node changed is
     * non-anonymous content.
     *
     * @param aContent  content that has changed
     */
    void MaybeUnhook(nsIContent* aContent);

    nsIDocument* mDocument; //weak. Set as long as we're observing the document
    PRUint32 mUpdateDepth;
    PRPackedBool mUnhookPending;
};

nsresult NS_NewXMLPrettyPrinter(nsXMLPrettyPrinter** aPrinter);

#endif //nsXMLPrettyPrinter_h__