New files for nsHTMLEditor and table editing transactions (not working yet)

git-svn-id: svn://10.0.0.236/trunk@22463 18797224-902f-48f8-a5cc-f745e15eee43
1999-03-01 19:54:47 +00:00
parent 3837aaafce
commit e768f77e73
25 changed files with 4068 additions and 0 deletions
--- a/mozilla/editor/base/DeleteTableRowTxn.cpp
+++ b/mozilla/editor/base/DeleteTableRowTxn.cpp
@@ -0,0 +1,175 @@
+/* -*- 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 "DeleteTableRowTxn.h"
+#include "nsEditor.h"
+#include "nsIDOMCharacterData.h"
+#include "nsIDOMSelection.h"
+#include "nsIPresShell.h"
+#include "EditAggregateTxn.h"
+
+static NS_DEFINE_IID(kDeleteTableRowTxnIID,   DELETE_ROW_TXN_IID);
+static NS_DEFINE_IID(kIDOMSelectionIID, NS_IDOMSELECTION_IID);
+
+nsIAtom *DeleteTableRowTxn::gDeleteTableRowTxnName;
+
+nsresult DeleteTableRowTxn::ClassInit()
+{
+  if (nsnull==gDeleteTableRowTxnName)
+    gDeleteTableRowTxnName = NS_NewAtom("NS_DeleteTableRowTxn");
+  return NS_OK;
+}
+
+DeleteTableRowTxn::DeleteTableRowTxn()
+  : EditTxn()
+{
+}
+
+nsresult DeleteTableRowTxn::Init(nsIDOMCharacterData *aElement,
+                             nsIDOMNode *aNode,
+                             nsIPresShell* aPresShell)
+{
+  mElement = aElement;
+  mNodeToInsert = aNode;
+  mPresShell = aPresShell;
+  return NS_OK;
+}
+
+nsresult DeleteTableRowTxn::Do(void)
+{
+  //nsresult res = mElement->InsertData(mOffset, mStringToInsert);
+  // advance caret: This requires the presentation shell to get the selection.
+  nsresult res = NS_ERROR_FAILURE;
+
+  nsCOMPtr<nsIDOMSelection> selection;
+  res = mPresShell->GetSelection(getter_AddRefs(selection));
+  if (NS_SUCCEEDED(res)) {
+    res = selection->Collapse(mElement, 0 /*mOffset+1*/ /*+mStringToInsert.Length()*/);
+  }
+  return res;
+}
+
+nsresult DeleteTableRowTxn::Undo(void)
+{
+  nsresult result = NS_ERROR_FAILURE;
+#if 0
+  PRUint32 length = mStringToInsert.Length();
+  result = mElement->DeleteData(mOffset, length);
+  if (NS_SUCCEEDED(result))
+  { // set the selection to the insertion point where the string was removed
+    nsCOMPtr<nsIDOMSelection> selection;
+    result = mPresShell->GetSelection(getter_AddRefs(selection));
+    if (NS_SUCCEEDED(result)) {
+      result = selection->Collapse(mElement, mOffset);
+    }
+  }
+#endif
+  return result;
+}
+
+#if 0
+nsresult DeleteTableRowTxn::Merge(PRBool *aDidMerge, nsITransaction *aTransaction)
+{
+  // set out param default value
+  if (nsnull!=aDidMerge)
+    *aDidMerge=PR_FALSE;
+  if ((nsnull!=aDidMerge) && (nsnull!=aTransaction))
+  {
+    // if aTransaction isa DeleteTableRowTxn, and if the selection hasn't changed, 
+    // then absorb it
+    nsCOMPtr<DeleteTableRowTxn> otherTxn(aTransaction);
+    if (otherTxn)
+    {
+      if (PR_TRUE==IsSequentialInsert(otherTxn))
+      {
+        nsAutoString otherData;
+        otherTxn->GetData(otherData);
+        mStringToInsert += otherData;
+        *aDidMerge = PR_TRUE;
+      }
+    }
+    else
+    { // the next DeleteTableRowTxn might be inside an aggregate that we have special knowledge of
+      nsCOMPtr<EditAggregateTxn> otherTxn(aTransaction);
+      if (otherTxn)
+      {
+        nsCOMPtr<nsIAtom> txnName;
+        otherTxn->GetName(getter_AddRefs(txnName));
+        if (txnName==gDeleteTableRowTxnName)
+        { // yep, it's one of ours.  By definition, it must contain only
+          // a single DeleteTableRowTxn
+          nsCOMPtr<EditTxn> childTxn;
+          otherTxn->GetTxnAt(0, getter_AddRefs(childTxn));
+          nsCOMPtr<DeleteTableRowTxn> otherInsertTxn(childTxn);
+          if (otherInsertTxn)
+          {
+            if (PR_TRUE==IsSequentialInsert(otherInsertTxn))
+            {
+              nsAutoString otherData;
+              otherInsertTxn->GetData(otherData);
+              mStringToInsert += otherData;
+              *aDidMerge = PR_TRUE;
+            }
+          }
+        }
+      }
+    }
+  }
+  return NS_OK;
+}
+#endif
+
+nsresult DeleteTableRowTxn::Write(nsIOutputStream *aOutputStream)
+{
+  return NS_OK;
+}
+
+nsresult DeleteTableRowTxn::GetUndoString(nsString **aString)
+{
+  if (nsnull!=aString)
+  {
+    **aString="Remove Table";
+  }
+  return NS_OK;
+}
+
+nsresult DeleteTableRowTxn::GetRedoString(nsString **aString)
+{
+  if (nsnull!=aString)
+  {
+    **aString="Insert Table";
+  }
+  return NS_OK;
+}
+
+/* ============= nsISupports implementation ====================== */
+
+nsresult
+DeleteTableRowTxn::QueryInterface(REFNSIID aIID, void** aInstancePtr)
+{
+  if (nsnull == aInstancePtr) {
+    return NS_ERROR_NULL_POINTER;
+  }
+  if (aIID.Equals(kDeleteTableRowTxnIID)) {
+    *aInstancePtr = (void*)(DeleteTableRowTxn*)this;
+    NS_ADDREF_THIS();
+    return NS_OK;
+  }
+  return (EditTxn::QueryInterface(aIID, aInstancePtr));
+}
+