void InitIfNeeded()
{
if (!m_Initialized)
{
// Check if it already exists (deserialized from window layout file or scriptable object)
if (m_TreeViewState == null)
{
m_TreeViewState = new TreeViewState();
}
bool firstInit = m_MultiColumnHeaderState == null;
var headerState = MultiColumnTreeView.CreateDefaultMultiColumnHeaderState(multiColumnTreeViewRect.width);
if (MultiColumnHeaderState.CanOverwriteSerializedFields(m_MultiColumnHeaderState, headerState))
{
MultiColumnHeaderState.OverwriteSerializedFields(m_MultiColumnHeaderState, headerState);
}
m_MultiColumnHeaderState = headerState;
var multiColumnHeader = new MyMultiColumnHeader(headerState);
if (firstInit)
{
multiColumnHeader.ResizeToFit();
}
var treeModel = new TreeModel <MyTreeElement>(GetData());
m_TreeView = new MultiColumnTreeView(m_TreeViewState, multiColumnHeader, treeModel);
m_SearchField = new SearchField();
m_SearchField.downOrUpArrowKeyPressed += m_TreeView.SetFocusAndEnsureSelectedItem;
m_Initialized = true;
}
}
void InitIfNeeded()
{
if (!m_Initialized)
{
// Check if it already exists (deserialized from window layout file or scriptable object)
if (m_TreeViewState == null)
{
m_TreeViewState = new TreeViewState();
}
bool firstInit = m_MultiColumnHeaderState == null;
// headerState: MultiColumnHeaderState结构
var headerState = MultiColumnTreeView.CreateDefaultMultiColumnHeaderState(multiColumnTreeViewRect.width);
// 检查，是否有序列化的MultiColumnHeaderState数据，可以使用
// CanOverwriteSerializedFields:
// Checks if the source state can transfer its serialized data to the destination state.
// Some of the fields in the MultiColumnHeader state are serializable so they can be preserved
// between assembly reloads and/or when restarting Unity.
// The non-serialized fields have to be reconstructed.
// After having reconstructed the state use this method before calling OverwriteSerializedFields to apply
// any serialized fields from a previous session.
if (MultiColumnHeaderState.CanOverwriteSerializedFields(m_MultiColumnHeaderState, headerState))
{
MultiColumnHeaderState.OverwriteSerializedFields(m_MultiColumnHeaderState, headerState);
}
m_MultiColumnHeaderState = headerState;
// 根据MultiColumnHeaderState结构
// 创建MultiColumnHeader结构
var multiColumnHeader = new MyMultiColumnHeader(headerState);
if (firstInit)
{
multiColumnHeader.ResizeToFit();
}
var treeModel = new TreeModel <MyTreeElement>(GetData());
m_TreeView = new MultiColumnTreeView(m_TreeViewState, multiColumnHeader, treeModel);
m_SearchField = new SearchField();
m_SearchField.downOrUpArrowKeyPressed += m_TreeView.SetFocusAndEnsureSelectedItem;
m_Initialized = true;
}
}
void InitIfNeeded()
{
if (!m_Initialized)
{
// Check if it already exists (deserialized from window layout file or scriptable object)
if (m_TreeViewState == null)
{
m_TreeViewState = new TreeViewState();
}
var headerState = MultiColumnTreeView.CreateDefaultMultiColumnHeaderState(multiColumnTreeViewRect.width);
if (MultiColumnHeaderState.CanOverwriteSerializedFields(m_MultiColumnHeaderState, headerState))
{
MultiColumnHeaderState.OverwriteSerializedFields(m_MultiColumnHeaderState, headerState);
}
m_MultiColumnHeaderState = headerState;
var multiColumnHeader = new MyMultiColumnHeader(headerState);
var treeModel = new TreeModel <MyTreeElement>(GetData());
m_TreeView = new MultiColumnTreeView(m_TreeViewState, multiColumnHeader, treeModel);
m_Initialized = true;
}
}