CPRuleEditor & CPPredicateEditor & CPPredicateEditorRowtemplate implementations with theming, nib2cib support.

Tests: CPRuleEditorCibTest, CPPredicateEditorCibTest, SmartFoldersDemo: a real world usage of CPPredicateEditor.
Documentation for these 3 new classes.

AppKit/CPRuleEditor/_CPPredicateEditorRowNode.j

@@ -0,0 +1,91 @@
+/*
+ *     Created by cacaodev@gmail.com.
+ *     Copyright (c) 2011 Pear, Inc. All rights reserved.
+ */
+
+@class _CPPredicateEditorTree;
+@implementation _CPPredicateEditorRowNode : CPObject
+{
+    _CPPredicateEditorTree                   tree @accessors;
+    CPMutableArray                  templateViews @accessors;
+    CPMutableArray        copiedTemplateContainer @accessors;
+    CPArray                              children @accessors(copy);
+}
+
+- (BOOL)applyTemplate:(id)template withViews:(id)views forOriginalTemplate:(id)arg3
+{
+    return YES; // not in use
+}
+
++ (id)rowNodeFromTree:(id)aTree
+{
+    return [_CPPredicateEditorRowNode _rowNodeFromTree:aTree withTemplate:[aTree template]];
+}
+
++ (id)_rowNodeFromTree:(id)aTree withTemplate:(id)template
+{
+    var nodeChildren = [CPArray array],
+        treeChildren = [aTree children],
+        count = [treeChildren count];
+
+    for (var i = 0; i < count; i++)
+    {
+        var childnode = [self _rowNodeFromTree:treeChildren[i] withTemplate:template];
+        [nodeChildren addObject:childnode];
+    }
+
+    var node = [_CPPredicateEditorRowNode new];
+    [node setTree:aTree];
+    [node setCopiedTemplateContainer:[CPMutableArray arrayWithObject:template]];
+    [node setTemplateViews:[template templateViews]];
+    [node setChildren:nodeChildren];
+
+    return node;
+}
+
+
+- (BOOL)isEqual:(id)node
+{
+    return (self === node || tree === [node tree]);
+}
+
+- (void)copyTemplateIfNecessary
+{
+    if ([[self templateForRow] rightIsWildcard])
+    {
+        var copy = [[tree template] copy];
+        [self setCopiedTemplateContainer:[CPMutableArray arrayWithObject:copy]];
+        [self setTemplateViews:[copy templateViews]];
+    }
+}
+
+- (CPView)templateView
+{
+    return [templateViews objectAtIndex:[tree indexIntoTemplate]];
+}
+
+- (id)templateForRow
+{
+    return [copiedTemplateContainer lastObject];
+}
+
+- (CPString)title
+{
+    return [tree title];
+}
+
+- (id)displayValue
+{
+    var title = [self title];
+    if (title == nil)
+        return [self templateView];
+
+    return title;
+}
+
+- (CPString)description
+{
+    return [CPString stringWithFormat:@"<%@ %@ %@ %p>", [self className], [self title], [self displayValue], self];
+}
+
+@end