internal void OnSourceChanged(BindingPathPart lastPart)
{
bool needSubscribe = mode == BindingMode.OneWay || mode == BindingMode.TwoWay;
BindingPathPart part = lastPart.nextPart;
object m_Current = part.source;
while (part != null)
{
part.SetSource(m_Current); //
m_LastPart = part;
if (!part.isSelf && m_Current != null)
{
if (part.nextPart != null)
{
part.TryGetValue(needSubscribe && part.nextPart != null, out m_Current);
}
}
// UnityEngine.Debug.LogFormat ("OnSourceChanged current={0},property={1},m_Path={2},parts.Count={3},part={4},part.isSelf={5}", m_Current, propertyName, path, m_Parts.Count, part, part.isSelf);
if (!part.isSelf && m_Current == null)
{
break;
}
if (part.nextPart != null && needSubscribe)
{
if (m_Current is INotifyPropertyChanged)
{
// UnityEngine.Debug.LogFormat ("current = {0}", current);
part.Subscribe((INotifyPropertyChanged)m_Current);
}
}
if (part.nextPart != null)
{
part = part.nextPart;
}
else
{
part = null;
}
}
UpdateTarget();
}
//绑定目标
public void Apply(object context, bool invoke = true)
{
if (!m_IsApplied)
{
ParsePath();
m_IsApplied = true;
}
if (isBound)
{
Unapply();
}
object bindingContext = context;
if (source)
{
bindingContext = source;
}
m_Context = bindingContext;
if (m_Context == null)
{
return;
}
object m_Current = bindingContext;
#if false
ExpressionUtility.ApplyByLua(this, m_Current);
#else
bool needSubscribe = this.needSubscribe;
BindingPathPart part = null;
for (var i = 0; i < m_Parts.Count; i++)
{
part = m_Parts[i];
part.SetSource(m_Current); //
if (!part.isSelf && m_Current != null)
{
if (i < m_Parts.Count - 1)
{
part.TryGetValue(needSubscribe && part.nextPart != null, out m_Current); //lua NofityObject对象通过此方法在BindingExpression.get_property中订阅
}
}
if (!part.isSelf && m_Current == null)
{
break;
}
if (part.nextPart != null && needSubscribe)
{
if (m_Current is INotifyPropertyChanged)
{
part.Subscribe((INotifyPropertyChanged)m_Current);
}
}
}
SetLastPart();
if (invoke)
{
//初始化值
InitValue();
}
#endif
}
//绑定目标
public void Apply(object context, bool invoke = true)
{
if (!m_IsApplied)
{
#if LUA_PROFILER_DEBUG
UnityEngine.Profiling.Profiler.BeginSample(GetProfilerName() + ".ParsePath");
#endif
ParsePath();
#if LUA_PROFILER_DEBUG
UnityEngine.Profiling.Profiler.EndSample();
#endif
m_IsApplied = true;
}
if (isBound)
{
#if LUA_PROFILER_DEBUG
UnityEngine.Profiling.Profiler.BeginSample(GetProfilerName() + ".Unapply");
#endif
Unapply();
#if LUA_PROFILER_DEBUG
UnityEngine.Profiling.Profiler.EndSample();
#endif
}
object bindingContext = context;
if (source)
{
bindingContext = source;
}
m_Context = bindingContext;
if (m_Context == null)
{
Unapply();
return;
}
object m_Current = bindingContext;
#if false
ExpressionUtility.ApplyByLua(this, m_Current);
#else
#if LUA_PROFILER_DEBUG
UnityEngine.Profiling.Profiler.BeginSample(GetProfilerName() + ".Part.TryGetValue");
#endif
bool needSubscribe = this.needSubscribe;
BindingPathPart part = null;
for (var i = 0; i < m_Parts.Count; i++)
{
part = m_Parts[i];
part.SetSource(m_Current); //
if (!part.isSelf && m_Current != null)
{
if (i < m_Parts.Count - 1)
{
part.TryGetValue(needSubscribe && part.nextPart != null, out m_Current); //lua NofityObject对象通过此方法在BindingExpression.get_property中订阅
}
}
if (!part.isSelf && m_Current == null)
{
break;
}
if (part.nextPart != null && needSubscribe)
{
if (m_Current is INotifyPropertyChanged)
{
part.Subscribe((INotifyPropertyChanged)m_Current);
}
}
}
SetLastPart();
#if LUA_PROFILER_DEBUG
UnityEngine.Profiling.Profiler.EndSample();
#endif
if (invoke)
{
#if LUA_PROFILER_DEBUG
UnityEngine.Profiling.Profiler.BeginSample(GetProfilerName() + ".InitValue");
#endif
//初始化值
InitValue();
#if LUA_PROFILER_DEBUG
UnityEngine.Profiling.Profiler.EndSample();
#endif
}
#endif
}