More ViXEn transaction system love.

NOT PART OF BUILD.

extensions/vixen/resources/content/palette/vxPalette.js

@@ -81,11 +81,11 @@ var vxPalette =
     var txns = [radiogroupTxn, radiogroupAttrTxn, radioTxn, radioAttrTxn];
     var aggregateTxn = new vxAggregateTxn(txns);
     aggregateTxn.init();
-
+    
     var txmgr = focusedWindow.vxVFD.mTxMgrShell;
-    txmgr.addListener([radioAttrTxn, radioTxn, radioAttrTxn]);
+    aggregateTxn.addListener([radiogroupAttrTxn, radioTxn, radioAttrTxn]);
     txmgr.doTransaction(aggregateTxn);
-    txmgr.removeListener([radioAttrTxn, radioTxn, radioAttrTxn]);
+    aggregateTxn.removeListener([radiogroupAttrTxn, radioTxn, radioAttrTxn]);
   },
   
   incrementElementCount: function (aNodeName)
@@ -104,9 +104,8 @@ var vxPalette =
     // need to check to see if the focused window is a vfd
 
     var insertionPoint = focusedWindow.vxVFD.getInsertionPoint();
-    
     var vfdDocument = focusedWindow.vxVFD.getContent(true).document;
-   
+
     var elementTxn = new vxCreateElementTxn(vfdDocument, aNodeName, insertionPoint.parent, insertionPoint.index);
     elementTxn.init();
     var elementAttrTxn = new vxChangeAttributeTxn(elementTxn.mID, aAttributes, aValues, false);
@@ -120,6 +119,16 @@ var vxPalette =
     txmgr.addListener(elementAttrTxn);
     txmgr.doTransaction(aggregateTxn);
     txmgr.removeListener(elementAttrTxn);
+  },
+
+  /** 
+   * Implements nsITransactionListener
+   */
+  didUndo: function (aTransactionManager, aTransaction, aInterrupt)
+  {
+    // Register the palette as a transaction listener so that the instance
+    // count for each type of widget can be decremented when a transaction
+    // is done. 
   }
 };
 

extensions/vixen/resources/content/palette/vxPalette.xul

@@ -14,6 +14,7 @@
   <script src="chrome://vixen/content/palette/vxPalette.js"></script>
 
   <!-- supported txns -->
+  <script src="chrome://vixen/content/vfd/vxBaseTxn.js"></script>
   <script src="chrome://vixen/content/vfd/vxAggregateTxn.js"></script>
   <script src="chrome://vixen/content/vfd/vxChangeAttributeTxn.js"></script>
   <script src="chrome://vixen/content/vfd/vxCreateElementTxn.js"></script>

extensions/vixen/resources/content/vfd/vxAggregateTxn.js

@@ -36,33 +36,41 @@ function vxAggregateTxn (aTransactionList)
     this.mTransactionList[aTransactionList[i].mID] = aTransactionList[i];
   
   this.mID = "aggregate-txn::";
+  
+  this.mTransactionListeners = [];
 } 
  
 vxAggregateTxn.prototype = {
-  init: function ()
-  {
-    this.mID += generateID();
-  },
+  __proto__: vxBaseTxn.prototype,
   
   doTransaction: function ()
   {
-    _dd("vxAggregateTxn::doTransaction");
-    for (var i in this.mTransactionList)
+    for (var i in this.mTransactionList) {
+      var irq = { };
+      this.notifyListeners("willDo", this.mTransactionList[i], irq);
       this.mTransactionList[i].doTransaction();
+      this.notifyListeners("didDo", this.mTransactionList[i], irq);
+    }
   },
 
   undoTransaction: function ()
   {
-    _dd("vxAggregateTxn::undoTransaction");
-    for (var i in this.mTransactionList)
+    for (var i in this.mTransactionList) {
+      var irq = { };
+      this.notifyListeners("willUndo", this.mTransactionList[i], irq);
       this.mTransactionList[i].undoTransaction();
+      this.notifyListeners("didUndo", this.mTransactionList[i], irq);
+    }
   },
   
   redoTransaction: function ()
   {
-    _dd("vxAggregateTxn::redoTransaction");
-    for (var i in this.mTransactionList)
+    for (var i in this.mTransactionList) {
+      var irq = { };
+      this.notifyListeners("willRedo", this.mTransactionList[i], irq);
       this.mTransactionList[i].redoTransaction();
+      this.notifyListeners("didRedo", this.mTransactionList[i], irq);
+    }
   },
 
   get commandString()

extensions/vixen/resources/content/vfd/vxBaseTxn.js

@@ -0,0 +1,80 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ *
+ * The contents of this file are subject to the Mozilla Public
+ * License Version 1.1 (the "License"); you may not use this file
+ * except in compliance with the License. You may obtain a copy of
+ * the License at http://www.mozilla.org/MPL/
+ * 
+ * Software distributed under the License is distributed on an "AS
+ * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
+ * implied. See the License for the specific language governing
+ * rights and limitations under the License.
+ * 
+ * The Original Code is mozilla.org code.
+ * 
+ * The Initial Developer of the Original Code is Netscape
+ * Communications Corporation.  Portions created by Netscape are
+ * Copyright (C) 2000 Netscape Communications Corporation.  All
+ * Rights Reserved.
+ * 
+ * Contributor(s): 
+ *   Ben Goodger <ben@netscape.com> (Original Author)
+ */
+
+function vxBaseTxn ()
+{
+}  
+
+vxBaseTxn.prototype = {
+  mID: null,
+
+  mListeners: [],
+
+  notifyListeners: function (aEvent, aTransaction, aIRQ) 
+  {
+    _dd("vxBaseTxn::notifyListeners");
+    for (var i = 0; i < this.mListeners.length; i++) {
+      if (aEvent in this.mListeners[i]) {
+        _ddf("calling listener for transaction complete", aTransaction.commandString);
+        this.mListeners[i][aEvent](undefined, aTransaction, aIRQ);
+      }
+    }
+  },
+  
+  addListener: function (aListener)
+  {
+    _dd("vxBaseTxn::addListener");
+    this.mListeners = this.mListeners.concat(aListener);
+    _ddf("vxBaseTxn::mListeners", this.mListeners);
+  },
+  
+  removeListener: function (aListener)
+  {
+    _dd("vxBaseTxn::removeListener");
+    var listeners = [].concat(aListener);
+    for (var i = 0; i < this.mListeners.length; i++) {
+      for (var k = 0; k < listeners.length; k++) {
+        if (this.mListeners[i] == listeners[k]) {
+          this.mListeners.splice(i,1);
+          break;
+        }
+      }
+    }
+  },
+  
+  init: function ()
+  {
+    this.mID += this.generateID();
+  },
+  
+  /** 
+   * Generate a unique identifier for a transaction
+   */
+  generateID: function ()
+  {
+    var val = ((new Date()).getUTCMilliseconds())*Math.random()*100000;
+    _ddf("value", val);
+    return val;
+  }
+};
+

extensions/vixen/resources/content/vfd/vxChangeAttributeTxn.js

@@ -57,18 +57,14 @@ function vxChangeAttributeTxn(aElement, aAttribute, aValue, aRemoveFlag)
 } 
 
 vxChangeAttributeTxn.prototype = {
-  init: function ()
-  {
-    this.mID += generateID();
-  },
-  
+  __proto__: vxBaseTxn.prototype,
+
   doTransaction: function ()
   {
-    if (!this.mElementCreated) 
+    if (!this.mElementCreated)
       return;
       
     for (var i = 0; i < this.mAttributes.length; i++) {
-      _ddf("changing attribute", this.mAttributes[i]);
       this.mUndoValues[i] = this.mElement.getAttribute(this.mAttributes[i]);
       if (!this.mRemoveFlags[i])
         this.mElement.setAttribute(this.mAttributes[i], this.mValues[i]);
@@ -113,16 +109,18 @@ vxChangeAttributeTxn.prototype = {
    */
   didDo: function (aTransactionManager, aTransaction, aInterrupt) 
   {
-    _ddf("aTransaction is a", aTransaction.commandString);
-    if (aTransaction.commandString.indexOf("aggregate-txn") >= 0) {
-      var createElementTxn = aTransaction.mTransactionList[this.mElementTxnID];
-      _ddf("the transaction ahead of us is", createElementTxn.commandString);
-      _ddf("and its element is", createElementTxn.mLocalName);
-      if (createElementTxn.commandString.indexOf("create-element") >= 0) {
-        this.mElement = createElementTxn.mElement;
-        this.mElementCreated = true;
-        this.doTransaction();
-      }
+    var prevTxn = null;
+    if (aTransaction.commandString.indexOf("aggregate-txn") >= 0)
+      prevTxn = aTransaction.mTransactionList[this.mElementTxnID];
+    else 
+      prevTxn = aTransaction;
+
+    if (prevTxn.commandString.indexOf("create-element") >= 0) {
+      _ddf("did create element of", prevTxn.mLocalName);
+      this.mElement = prevTxn.mElement;
+      this.mElementCreated = true;
+      _ddf("going to actually do this transaction now", this.mAttributes);
+      this.doTransaction();
     }
   }
 };

extensions/vixen/resources/content/vfd/vxCreateElementTxn.js

@@ -45,17 +45,12 @@ function vxCreateElementTxn(aDocument, aLocalName, aParentNode, aChildOffset)
 } 
  
 vxCreateElementTxn.prototype = {
-  init: function () 
-  {
-    this.mID += generateID();
-  },
+  __proto__: vxBaseTxn.prototype,
 
   doTransaction: function ()
   {
-    _ddf("creating element", this.mLocalName);
     if (!this.mElementCreated) {
-      _dd("aParentNode is an id, bailing early");
-      _ddf("localname is", this.mLocalName);
+      _dd("element we rely on does not yet exist, so bail for now");
       return;
     }
       
@@ -96,9 +91,14 @@ vxCreateElementTxn.prototype = {
    */
   didDo: function (aTransactionManager, aTransaction, aInterrupt) 
   {
-    var createElementTxn = aTransaction.mTransactionList[this.mElementTxnID];
-    if (createElementTxn.commandString.indexOf("create-element") >= 0) {
-      this.mElement = createElementTxn.mElement;
+    var prevTxn = null;
+    if (aTransaction.commandString.indexOf("aggregate-txn") >= 0) 
+      prevTxn = aTransaction.mTransactionList[this.mElementTxnID];
+    else
+      prevTxn = aTransaction;
+  
+    if (prevTxn.commandString.indexOf("create-element") >= 0) {
+      this.mParentNode = prevTxn.mElement;
       this.mElementCreated = true;
       this.doTransaction();
     }

extensions/vixen/resources/content/vfd/vxVFDTransactionManager.js

@@ -63,8 +63,8 @@ vxVFDTransactionManager.prototype =
       
       // likewise with the RDF Seq.
       var seqCount = this.mTxnSeq.GetCount();
-      for (i = this.mTxnStack.index; i < seqCount; i++)
-        this.mTxnSeq.RemoveElementAt(i);
+      for (i = seqCount-1; i >= this.mTxnStack.index; i--)
+        this.mTxnSeq.RemoveElementAt(i, true);
     }
     
     // append the transaction to our list
@@ -76,7 +76,6 @@ vxVFDTransactionManager.prototype =
     for (i = 0; i < this.mTransactionListeners.length; i++) {
       interruptRequest = {};
       if ("didDo" in this.mTransactionListeners[i]) {
-        _ddf("transaction listener " + i, this.mTransactionListeners[i].commandString);
         this.mTransactionListeners[i].didDo(this, aTransaction, interruptRequest);
         // do something with irq here once we figure out what it does.
       }
@@ -98,7 +97,6 @@ vxVFDTransactionManager.prototype =
 
     // undo the transaction
     if (txn) {
-      _ddf("going to undo the txn at", this.mTxnStack.index-1);
       txn.undoTransaction();
       this.mTxnStack.index--;
     }
@@ -232,6 +230,12 @@ var vxVFDTransactionDS =
     return null;
   },
   
+  GetTargets: function (aSource, aProperty, aTruthValue)
+  {
+    var targets = [].concat(this.GetTarget(aSource, aProperty, aTruthValue));
+    return new ArrayEnumerator(targets);
+  },
+  
   mObservers: [],
   AddObserver: function (aObserver) 
   {
@@ -282,7 +286,6 @@ vxVFDTransactionStack.prototype =
   
   set index (aValue)
   {
-    _ddf("setting index to", aValue);
     this.mIndex = aValue;
     return this.mIndex;
   },

extensions/vixen/resources/content/vxUtils.js

@@ -44,16 +44,6 @@ var vxUtils = {
   
 };
 
-/** 
- * Generate a unique identifier for a transaction
- */
-function generateID()
-{
-  var val = ((new Date()).getUTCMilliseconds())*Math.random()*100000;
-  _ddf("value", val);
-  return val;
-}
-
 /** 
  * dumps the DOM tree under a given node.
  */
@@ -64,3 +54,25 @@ function dumpDOM(aNode)
     dumpDOM(aNode.childNodes[i]);
 }
 
+/** 
+ * Converts a regular js array into an nsISimpleEnumerator
+ */
+function ArrayEnumerator(aArray)
+{
+  this.mArray = aArray;
+  this.mIndex = 0;
+}
+
+ArrayEnumerator.prototype = {
+  getNext: function ()
+  {
+    return this.mArray[this.mIndex++];
+  },
+  
+  hasMoreElements: function ()
+  {
+    if (this.mIndex < this.mArray.length)
+      return true;
+    return false;
+  }
+};

extensions/vixen/resources/jar.mn

@@ -18,6 +18,7 @@ vixen.jar:
        content/vixen/vfd/vxVFDSelectionManager.js    (content/vfd/vxVFDSelectionManager.js)
        content/vixen/vfd/vxVFDTransactionManager.js  (content/vfd/vxVFDTransactionManager.js)
        content/vixen/vfd/vxAggregateTxn.js           (content/vfd/vxAggregateTxn.js)
+       content/vixen/vfd/vxBaseTxn.js                (content/vfd/vxBaseTxn.js)
        skin/modern/vixen/contents.rdf                (skin/contents.rdf)
        skin/modern/vixen/vfdScratch.css              (skin/vfdScratch.css)
        locale/en-US/vixen/contents.rdf               (locale/en-US/contents.rdf)