Make Insert HTML a transaction

git-svn-id: svn://10.0.0.236/trunk@30697 18797224-902f-48f8-a5cc-f745e15eee43
1999-05-07 19:23:17 +00:00
parent 93cc772d77
commit 0d82dd7ce3
9 changed files with 236 additions and 40 deletions
--- a/mozilla/editor/base/nsInsertHTMLTxn.cpp
+++ b/mozilla/editor/base/nsInsertHTMLTxn.cpp
@@ -0,0 +1,115 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ *
+ * The contents of this file are subject to the Netscape Public License
+ * Version 1.0 (the "NPL"); you may not use this file except in
+ * compliance with the NPL.  You may obtain a copy of the NPL at
+ * http://www.mozilla.org/NPL/
+ *
+ * Software distributed under the NPL is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
+ * for the specific language governing rights and limitations under the
+ * NPL.
+ *
+ * The Initial Developer of this code under the NPL is Netscape
+ * Communications Corporation.  Portions created by Netscape are
+ * Copyright (C) 1998 Netscape Communications Corporation.  All Rights
+ * Reserved.
+ */
+
+#include "nsInsertHTMLTxn.h"
+#include "nsIDOMSelection.h"
+#include "nsIContent.h"
+#include "nsIDOMNSRange.h"
+
+
+nsInsertHTMLTxn::nsInsertHTMLTxn() : EditTxn(), mSrc("")
+{
+}
+
+NS_IMETHODIMP nsInsertHTMLTxn::Init(nsString& aSrc, nsIEditor* aEditor)
+{
+  if (!aEditor)
+    return NS_ERROR_NULL_POINTER;
+
+  mSrc = aSrc;
+  mEditor = do_QueryInterface(aEditor);
+  return NS_OK;
+}
+
+
+nsInsertHTMLTxn::~nsInsertHTMLTxn()
+{
+  //NS_RELEASE(mStr); // do nsStrings have to be released?
+}
+
+NS_IMETHODIMP nsInsertHTMLTxn::Do(void)
+{
+  nsCOMPtr<nsIDOMSelection>selection;
+  nsresult res = mEditor->GetSelection(getter_AddRefs(selection));
+  if (NS_SUCCEEDED(res) && selection)
+  {
+    // Get the first range in the selection, and save it in mRange:
+    res = selection->GetRangeAt(0, getter_AddRefs(mRange));
+    if (NS_SUCCEEDED(res))
+    {
+      nsCOMPtr<nsIDOMNSRange> nsrange (do_QueryInterface(mRange));
+      if (nsrange)
+      {
+#ifdef DEBUG_akkana
+        char* str = mSrc.ToNewCString();
+        printf("Calling nsInsertHTMLTxn::Do(%s)\n", str);
+        delete[] str;
+#endif /* DEBUG_akkana */
+        res = nsrange->InsertFragment(mSrc);
+        // XXX NOTE: this part isn't going through the transaction manager!
+      }
+    }
+#ifdef DEBUG_akkana
+    else printf("nsInsertHTMLTxn::Do: Couldn't get selection range!\n");
+#endif
+  }
+
+  return res;
+}
+
+NS_IMETHODIMP nsInsertHTMLTxn::Undo(void)
+{
+#ifdef DEBUG_akkana
+  printf("%p Undo Insert HTML\n", this);
+#endif /* DEBUG_akkana */
+
+  if (!mRange)
+    return NS_ERROR_NULL_POINTER;
+
+  return mRange->DeleteContents();
+}
+
+NS_IMETHODIMP nsInsertHTMLTxn::Merge(PRBool *aDidMerge, nsITransaction *aTransaction)
+{
+  if (nsnull != aDidMerge)
+    *aDidMerge=PR_FALSE;
+  return NS_OK;
+}
+
+NS_IMETHODIMP nsInsertHTMLTxn::Write(nsIOutputStream *aOutputStream)
+{
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP nsInsertHTMLTxn::GetUndoString(nsString **aString)
+{
+  if (nsnull!=aString)
+  {
+    **aString="Remove HTML: ";
+  }
+  return NS_OK;
+}
+
+NS_IMETHODIMP nsInsertHTMLTxn::GetRedoString(nsString **aString)
+{
+  if (nsnull!=aString)
+  {
+    **aString="Insert HTML: ";
+  }
+  return NS_OK;
+}