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  | 16 |  |  package org.kuali.student.common.ui.client.configurable.mvc.binding; | 
  | 17 |  |   | 
  | 18 |  |  import java.util.Iterator; | 
  | 19 |  |   | 
  | 20 |  |  import org.kuali.student.common.ui.client.mvc.DataModel; | 
  | 21 |  |  import org.kuali.student.core.assembly.data.Data; | 
  | 22 |  |  import org.kuali.student.core.assembly.data.QueryPath; | 
  | 23 |  |  import org.kuali.student.core.assembly.data.Data.Key; | 
  | 24 |  |  import org.kuali.student.core.assembly.data.Data.Property; | 
  | 25 |  |  import org.kuali.student.core.assembly.data.Data.StringKey; | 
  | 26 |  |   | 
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  | 31 |  |   | 
  | 32 | 0 |  public abstract class ModelWidgetBindingSupport<WidgetType> implements ModelWidgetBinding<WidgetType> { | 
  | 33 | 0 |      public static final StringKey RUNTIME_ROOT = new StringKey("_runtimeData"); | 
  | 34 | 0 |      public static final StringKey DIRTY_PATH = new StringKey("dirty"); | 
  | 35 |  |   | 
  | 36 |  |       | 
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  | 41 |  |   | 
  | 42 |  |   | 
  | 43 |  |   | 
  | 44 |  |      protected void setDirtyFlag(DataModel model, QueryPath qPath) { | 
  | 45 | 0 |          QueryPath parent = qPath.subPath(0, qPath.size() - 1); | 
  | 46 | 0 |          QueryPath qPathDirty = new QueryPath(); | 
  | 47 | 0 |          qPathDirty.addAll(parent); | 
  | 48 | 0 |          qPathDirty.add(RUNTIME_ROOT); | 
  | 49 | 0 |          qPathDirty.add(DIRTY_PATH); | 
  | 50 |  |   | 
  | 51 | 0 |          ensureDirtyFlagPath(model.getRoot(), qPathDirty); | 
  | 52 |  |   | 
  | 53 | 0 |          Data flags = model.get(qPathDirty); | 
  | 54 | 0 |          flags.set(qPath.get(qPath.size() - 1), Boolean.TRUE); | 
  | 55 | 0 |      } | 
  | 56 |  |   | 
  | 57 |  |       | 
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  | 60 |  |   | 
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  | 63 |  |   | 
  | 64 |  |   | 
  | 65 |  |      protected void ensureDirtyFlagPath(Data root, QueryPath path) { | 
  | 66 | 0 |          Data current = root; | 
  | 67 | 0 |          for (int i = 0; i < path.size(); i++) { | 
  | 68 | 0 |              Key key = path.get(i); | 
  | 69 | 0 |              Data d = current.get(key); | 
  | 70 | 0 |              if (d == null) { | 
  | 71 | 0 |                  d = new Data(); | 
  | 72 | 0 |                  current.set(key, d); | 
  | 73 |  |              } | 
  | 74 | 0 |              current = d; | 
  | 75 |  |          } | 
  | 76 | 0 |      } | 
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  | 78 |  |       | 
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  | 81 |  |   | 
  | 82 |  |   | 
  | 83 |  |      protected static boolean nullsafeEquals(Object o1, Object o2) { | 
  | 84 | 0 |          return (o1 == null && o2 == null) || (o1 != null && o1.equals(o2)); | 
  | 85 |  |      } | 
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  | 87 |  |       | 
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  | 91 |  |   | 
  | 92 |  |      protected static boolean nullsafeEquals(Data o1, Data o2) { | 
  | 93 | 0 |          if (o1 == null && o2 == null) { | 
  | 94 | 0 |              return true; | 
  | 95 | 0 |          } else if (o1 != null && o2 != null && o1.size() != o2.size()) { | 
  | 96 | 0 |              return false; | 
  | 97 | 0 |          } else if (o1 != null && o2 != null && o1.size() == o2.size()) { | 
  | 98 | 0 |              return deepEquals(o1, o2); | 
  | 99 |  |          } else { | 
  | 100 | 0 |              return false; | 
  | 101 |  |          } | 
  | 102 |  |      } | 
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  | 104 |  |       | 
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  | 106 |  |   | 
  | 107 |  |   | 
  | 108 |  |   | 
  | 109 |  |      private static boolean deepEquals(Data o1, Data o2) { | 
  | 110 | 0 |          Iterator<Property> iter = o1.iterator(); | 
  | 111 | 0 |          while (iter.hasNext()) { | 
  | 112 | 0 |              Property prop = iter.next(); | 
  | 113 | 0 |              Key key = prop.getWrappedKey(); | 
  | 114 | 0 |              Object value1 = prop.getValue(); | 
  | 115 | 0 |              Object value2 = o2.get(key); | 
  | 116 |  |   | 
  | 117 | 0 |              if (value1 == null ^ value2 == null) { | 
  | 118 | 0 |                  return false; | 
  | 119 | 0 |              } else if (value1 != null && value1 instanceof Data && value2 instanceof Data) { | 
  | 120 | 0 |                  boolean recursiveResult = deepEquals((Data) value1, (Data) value2); | 
  | 121 | 0 |                  if (!recursiveResult) { | 
  | 122 | 0 |                      return false; | 
  | 123 |  |                  } | 
  | 124 | 0 |              } else if (value1 != value2 && !(value1.equals(value2))) { | 
  | 125 | 0 |                  return false; | 
  | 126 |  |              } | 
  | 127 | 0 |          } | 
  | 128 | 0 |          return true; | 
  | 129 |  |      } | 
  | 130 |  |  } |