import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

editor/libeditor/TextEditUtils.cpp

@@ -0,0 +1,113 @@
+/* -*- 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 "TextEditUtils.h"
+
+#include "mozilla/Assertions.h"
+#include "mozilla/TextEditor.h"
+#include "mozilla/dom/Element.h"
+#include "nsAString.h"
+#include "nsCOMPtr.h"
+#include "nsCaseTreatment.h"
+#include "nsDebug.h"
+#include "nsError.h"
+#include "nsGkAtoms.h"
+#include "nsIDOMElement.h"
+#include "nsIDOMNode.h"
+#include "nsNameSpaceManager.h"
+#include "nsLiteralString.h"
+#include "nsString.h"
+
+namespace mozilla {
+
+/******************************************************************************
+ * TextEditUtils
+ ******************************************************************************/
+
+/**
+ * IsBody() returns true if aNode is an html body node.
+ */
+bool
+TextEditUtils::IsBody(nsIDOMNode* aNode)
+{
+  return EditorBase::NodeIsType(aNode, nsGkAtoms::body);
+}
+
+/**
+ * IsBreak() returns true if aNode is an html break node.
+ */
+bool
+TextEditUtils::IsBreak(nsIDOMNode* aNode)
+{
+  return EditorBase::NodeIsType(aNode, nsGkAtoms::br);
+}
+
+bool
+TextEditUtils::IsBreak(nsINode* aNode)
+{
+  MOZ_ASSERT(aNode);
+  return aNode->IsHTMLElement(nsGkAtoms::br);
+}
+
+
+/**
+ * IsMozBR() returns true if aNode is an html br node with |type = _moz|.
+ */
+bool
+TextEditUtils::IsMozBR(nsIDOMNode* aNode)
+{
+  MOZ_ASSERT(aNode);
+  return IsBreak(aNode) && HasMozAttr(aNode);
+}
+
+bool
+TextEditUtils::IsMozBR(nsINode* aNode)
+{
+  MOZ_ASSERT(aNode);
+  return aNode->IsHTMLElement(nsGkAtoms::br) &&
+         aNode->AsElement()->AttrValueIs(kNameSpaceID_None, nsGkAtoms::type,
+                                         NS_LITERAL_STRING("_moz"),
+                                         eIgnoreCase);
+}
+
+/**
+ * HasMozAttr() returns true if aNode has type attribute and its value is
+ * |_moz|. (Used to indicate div's and br's we use in mail compose rules)
+ */
+bool
+TextEditUtils::HasMozAttr(nsIDOMNode* aNode)
+{
+  MOZ_ASSERT(aNode);
+  nsCOMPtr<nsIDOMElement> element = do_QueryInterface(aNode);
+  if (!element) {
+    return false;
+  }
+  nsAutoString typeAttrVal;
+  nsresult rv = element->GetAttribute(NS_LITERAL_STRING("type"), typeAttrVal);
+  return NS_SUCCEEDED(rv) && typeAttrVal.LowerCaseEqualsLiteral("_moz");
+}
+
+/******************************************************************************
+ * AutoEditInitRulesTrigger
+ ******************************************************************************/
+
+AutoEditInitRulesTrigger::AutoEditInitRulesTrigger(TextEditor* aTextEditor,
+                                                   nsresult& aResult)
+  : mTextEditor(aTextEditor)
+  , mResult(aResult)
+{
+  if (mTextEditor) {
+    mTextEditor->BeginEditorInit();
+  }
+}
+
+AutoEditInitRulesTrigger::~AutoEditInitRulesTrigger()
+{
+  if (mTextEditor) {
+    mResult = mTextEditor->EndEditorInit();
+  }
+}
+
+} // namespace mozilla