editor/libeditor/text/nsTextEditUtils.cpp

   1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* This Source Code Form is subject to the terms of the Mozilla Public
   3  * License, v. 2.0. If a copy of the MPL was not distributed with this
   4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   5
   6 #include "mozilla/Assertions.h"
   7 #include "mozilla/dom/Element.h"
   8 #include "nsAString.h"
   9 #include "nsCOMPtr.h"
  10 #include "nsCaseTreatment.h"
  11 #include "nsDebug.h"
  12 #include "nsEditor.h"
  13 #include "nsError.h"
  14 #include "nsGkAtoms.h"
  15 #include "nsIDOMElement.h"
  16 #include "nsIDOMNode.h"
  17 #include "nsINameSpaceManager.h"
  18 #include "nsLiteralString.h"
  19 #include "nsPlaintextEditor.h"
  20 #include "nsString.h"
  21 #include "nsTextEditUtils.h"
  22
  23 using namespace mozilla;
  24
  25 ///////////////////////////////////////////////////////////////////////////
  26 // IsBody: true if node an html body node
  27 bool
  28 nsTextEditUtils::IsBody(nsIDOMNode *node)
  29 {
  30   return nsEditor::NodeIsType(node, nsGkAtoms::body);
  31 }
  32
  33
  34 ///////////////////////////////////////////////////////////////////////////
  35 // IsBreak: true if node an html break node
  36 bool
  37 nsTextEditUtils::IsBreak(nsIDOMNode *node)
  38 {
  39   return nsEditor::NodeIsType(node, nsGkAtoms::br);
  40 }
  41
  42
  43 ///////////////////////////////////////////////////////////////////////////
  44 // IsMozBR: true if node an html br node with type = _moz
  45 //
  46 bool
  47 nsTextEditUtils::IsMozBR(nsIDOMNode *node)
  48 {
  49   NS_PRECONDITION(node, "null node passed to nsHTMLEditUtils::IsMozBR");
  50   return IsBreak(node) && HasMozAttr(node);
  51 }
  52
  53
  54 bool
  55 nsTextEditUtils::IsMozBR(dom::Element* aNode)
  56 {
  57   MOZ_ASSERT(aNode);
  58   return aNode->IsHTML(nsGkAtoms::br) &&
  59          aNode->AttrValueIs(kNameSpaceID_None, nsGkAtoms::type,
  60                             NS_LITERAL_STRING("_moz"), eIgnoreCase);
  61 }
  62
  63 ///////////////////////////////////////////////////////////////////////////
  64 // HasMozAttr: true if node has type attribute = _moz
  65 //             (used to indicate the div's and br's we use in
  66 //              mail compose rules)
  67 //
  68 bool
  69 nsTextEditUtils::HasMozAttr(nsIDOMNode *node)
  70 {
  71   NS_PRECONDITION(node, "null parent passed to nsHTMLEditUtils::HasMozAttr");
  72   nsCOMPtr<nsIDOMElement> elem = do_QueryInterface(node);
  73   if (elem)
  74   {
  75     nsAutoString typeAttrVal;
  76     nsresult res = elem->GetAttribute(NS_LITERAL_STRING("type"), typeAttrVal);
  77     if (NS_SUCCEEDED(res) && (typeAttrVal.LowerCaseEqualsLiteral("_moz")))
  78       return true;
  79   }
  80   return false;
  81 }
  82
  83
  84 ///////////////////////////////////////////////////////////////////////////
  85 // nsAutoEditInitRulesTrigger methods
  86 //
  87 nsAutoEditInitRulesTrigger::nsAutoEditInitRulesTrigger( nsPlaintextEditor *aEd, nsresult &aRes) : mEd(aEd), mRes(aRes)
  88 {
  89     if (mEd) mEd->BeginEditorInit();
  90 }
  91
  92 nsAutoEditInitRulesTrigger::~nsAutoEditInitRulesTrigger()
  93 {
  94     if (mEd) mRes = mEd->EndEditorInit();
  95 }
  96