/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#include "nsComposeTxtSrvFilter.h"
#include "nsError.h"              // for NS_OK
#include "nsIContent.h"           // for nsIContent
#include "nsIDOMNode.h"           // for nsIDOMNode
#include "nsNameSpaceManager.h"   // for kNameSpaceID_None
#include "nsLiteralString.h"      // for NS_LITERAL_STRING
#include "nscore.h"               // for NS_IMETHODIMP
#include "mozilla/dom/Element.h"  // for nsIContent

nsComposeTxtSrvFilter::nsComposeTxtSrvFilter() : mIsForMail(false) {}

NS_IMPL_ISUPPORTS(nsComposeTxtSrvFilter, nsITextServicesFilter)

NS_IMETHODIMP
nsComposeTxtSrvFilter::Skip(nsIDOMNode* aNode, bool* _retval) {
  *_retval = false;

  // Check to see if we can skip this node
  // For nodes that are blockquotes, we must make sure
  // their type is "cite"
  nsCOMPtr<nsIContent> content(do_QueryInterface(aNode));
  if (content) {
    if (content->IsHTMLElement(nsGkAtoms::blockquote)) {
      if (mIsForMail) {
        *_retval = content->AsElement()->AttrValueIs(
            kNameSpaceID_None, nsGkAtoms::type, nsGkAtoms::cite, eIgnoreCase);
      }
    } else if (content->IsHTMLElement(nsGkAtoms::span)) {
      if (mIsForMail) {
        *_retval = content->AsElement()->AttrValueIs(
            kNameSpaceID_None, nsGkAtoms::mozquote, nsGkAtoms::_true,
            eIgnoreCase);
        if (!*_retval) {
          *_retval = content->AsElement()->AttrValueIs(
              kNameSpaceID_None, nsGkAtoms::_class, nsGkAtoms::mozsignature,
              eCaseMatters);
        }
      }
    } else if (content->IsAnyOfHTMLElements(
                   nsGkAtoms::script, nsGkAtoms::textarea, nsGkAtoms::select,
                   nsGkAtoms::style, nsGkAtoms::map)) {
      *_retval = true;
    } else if (content->IsHTMLElement(nsGkAtoms::table)) {
      if (mIsForMail) {
        *_retval = content->AsElement()->AttrValueIs(
            kNameSpaceID_None, nsGkAtoms::_class,
            NS_LITERAL_STRING("moz-email-headers-table"), eCaseMatters);
      }
    }
  }

  return NS_OK;
}