30 namespace ValueTreeSynchroniserHelpers
42 static void getValueTreePath (ValueTree v,
const ValueTree& topLevelTree, Array<int>& path)
44 while (v != topLevelTree)
46 ValueTree parent (v.getParent());
48 if (! parent.isValid())
51 path.add (parent.indexOf (v));
56 static void writeHeader (MemoryOutputStream& stream, ChangeType type)
58 stream.writeByte ((
char) type);
61 static void writeHeader (ValueTreeSynchroniser& target, MemoryOutputStream& stream,
62 ChangeType type, ValueTree v)
64 writeHeader (stream, type);
67 getValueTreePath (v, target.getRoot(), path);
69 stream.writeCompressedInt (path.size());
71 for (
int i = path.size(); --i >= 0;)
72 stream.writeCompressedInt (path.getUnchecked(i));
75 static ValueTree readSubTreeLocation (MemoryInputStream& input, ValueTree v)
77 const int numLevels = input.readCompressedInt();
79 if (! isPositiveAndBelow (numLevels, 65536))
82 for (
int i = numLevels; --i >= 0;)
84 const int index = input.readCompressedInt();
86 if (! isPositiveAndBelow (index, v.getNumChildren()))
109 writeHeader (m, ValueTreeSynchroniserHelpers::fullSync);
114 void ValueTreeSynchroniser::valueTreePropertyChanged (
ValueTree& vt,
const Identifier& property)
120 ValueTreeSynchroniserHelpers::writeHeader (*
this, m, ValueTreeSynchroniserHelpers::propertyChanged, vt);
122 value->writeToStream (m);
126 ValueTreeSynchroniserHelpers::writeHeader (*
this, m, ValueTreeSynchroniserHelpers::propertyRemoved, vt);
133 void ValueTreeSynchroniser::valueTreeChildAdded (ValueTree& parentTree, ValueTree& childTree)
135 const int index = parentTree.indexOf (childTree);
136 jassert (index >= 0);
138 MemoryOutputStream m;
139 ValueTreeSynchroniserHelpers::writeHeader (*
this, m, ValueTreeSynchroniserHelpers::childAdded, parentTree);
140 m.writeCompressedInt (index);
141 childTree.writeToStream (m);
145 void ValueTreeSynchroniser::valueTreeChildRemoved (ValueTree& parentTree, ValueTree&,
int oldIndex)
147 MemoryOutputStream m;
148 ValueTreeSynchroniserHelpers::writeHeader (*
this, m, ValueTreeSynchroniserHelpers::childRemoved, parentTree);
149 m.writeCompressedInt (oldIndex);
153 void ValueTreeSynchroniser::valueTreeChildOrderChanged (ValueTree& parent,
int oldIndex,
int newIndex)
155 MemoryOutputStream m;
156 ValueTreeSynchroniserHelpers::writeHeader (*
this, m, ValueTreeSynchroniserHelpers::childMoved, parent);
157 m.writeCompressedInt (oldIndex);
158 m.writeCompressedInt (newIndex);
162 void ValueTreeSynchroniser::valueTreeParentChanged (ValueTree&) {}
168 const ValueTreeSynchroniserHelpers::ChangeType type = (ValueTreeSynchroniserHelpers::ChangeType) input.
readByte();
170 if (type == ValueTreeSynchroniserHelpers::fullSync)
176 ValueTree v (ValueTreeSynchroniserHelpers::readSubTreeLocation (input, root));
183 case ValueTreeSynchroniserHelpers::propertyChanged:
190 case ValueTreeSynchroniserHelpers::propertyRemoved:
197 case ValueTreeSynchroniserHelpers::childAdded:
204 case ValueTreeSynchroniserHelpers::childRemoved:
218 case ValueTreeSynchroniserHelpers::childMoved:
226 v.
moveChild (oldIndex, newIndex, undoManager);