mirror of
https://github.com/m-labs/artiq.git
synced 2024-12-25 03:08:27 +08:00
gui/models: add DictSyncTreeSepModel
This commit is contained in:
parent
723ef71a87
commit
107d8f0ffa
@ -180,3 +180,176 @@ class ListSyncModel(QtCore.QAbstractTableModel):
|
||||
|
||||
def convert(self, v, column):
|
||||
raise NotImplementedError
|
||||
|
||||
|
||||
# An item is a node if it has children, a leaf if it does not.
|
||||
# There can be a node and a leaf with the same name and different
|
||||
# rows, e.g. foo/bar and foo.
|
||||
class _DictSyncTreeSepItem:
|
||||
def __init__(self, parent, row, name):
|
||||
self.parent = parent
|
||||
self.row = row
|
||||
self.name = name
|
||||
self.children_by_row = []
|
||||
self.children_nodes_by_name = dict()
|
||||
self.children_leaves_by_name = dict()
|
||||
|
||||
def __repr__(self):
|
||||
return ("<DictSyncTreeSepItem {}, row={}, nchildren={}>"
|
||||
.format(self.name, self.row, len(self.children_by_row)))
|
||||
|
||||
|
||||
def _bisect_item(a, name):
|
||||
lo = 0
|
||||
hi = len(a)
|
||||
while lo < hi:
|
||||
mid = (lo + hi)//2
|
||||
if name < a[mid].name:
|
||||
hi = mid
|
||||
else:
|
||||
lo = mid + 1
|
||||
return lo
|
||||
|
||||
|
||||
class DictSyncTreeSepModel(QtCore.QAbstractItemModel):
|
||||
def __init__(self, separator, headers, init):
|
||||
QtCore.QAbstractItemModel.__init__(self)
|
||||
|
||||
self.separator = separator
|
||||
self.headers = headers
|
||||
|
||||
self.backing_store = dict()
|
||||
self.children_by_row = []
|
||||
self.children_nodes_by_name = dict()
|
||||
self.children_leaves_by_name = dict()
|
||||
|
||||
for k, v in init.items():
|
||||
self[k] = v
|
||||
|
||||
def rowCount(self, parent):
|
||||
if parent.isValid():
|
||||
item = parent.internalPointer()
|
||||
return len(item.children_by_row)
|
||||
else:
|
||||
return len(self.children_by_row)
|
||||
|
||||
def columnCount(self, parent):
|
||||
return len(self.headers)
|
||||
|
||||
def headerData(self, col, orientation, role):
|
||||
if (orientation == QtCore.Qt.Horizontal
|
||||
and role == QtCore.Qt.DisplayRole):
|
||||
return self.headers[col]
|
||||
return None
|
||||
|
||||
def index(self, row, column, parent):
|
||||
if parent.isValid():
|
||||
parent_item = parent.internalPointer()
|
||||
return self.createIndex(row, column,
|
||||
parent_item.children_by_row[row])
|
||||
else:
|
||||
return self.createIndex(row, column,
|
||||
self.children_by_row[row])
|
||||
|
||||
def _index_item(self, item):
|
||||
if item is self:
|
||||
return QtCore.QModelIndex()
|
||||
else:
|
||||
return self.createIndex(item.row, 0, item)
|
||||
|
||||
def parent(self, index):
|
||||
if index.isValid():
|
||||
return self._index_item(index.internalPointer().parent)
|
||||
else:
|
||||
return QtCore.QModelIndex()
|
||||
|
||||
def _add_item(self, parent, name, leaf):
|
||||
if leaf:
|
||||
name_dict = parent.children_leaves_by_name
|
||||
else:
|
||||
name_dict = parent.children_nodes_by_name
|
||||
|
||||
if name in name_dict:
|
||||
return name_dict[name]
|
||||
row = _bisect_item(parent.children_by_row, name)
|
||||
item = _DictSyncTreeSepItem(parent, row, name)
|
||||
|
||||
self.beginInsertRows(self._index_item(parent), row, row)
|
||||
parent.children_by_row.insert(row, item)
|
||||
name_dict[name] = item
|
||||
self.endInsertRows()
|
||||
|
||||
return item
|
||||
|
||||
def __setitem__(self, k, v):
|
||||
*node_names, leaf_name = k.split(self.separator)
|
||||
if k in self.backing_store:
|
||||
parent = self
|
||||
for node_name in node_names:
|
||||
parent = parent.children_nodes_by_name[node_name]
|
||||
item = parent.children_leaves_by_name[leaf_name]
|
||||
index0 = self.createIndex(item.row, 0, item)
|
||||
index1 = self.createIndex(item.row, len(self.headers)-1, item)
|
||||
self.backing_store[k] = v
|
||||
self.dataChanged.emit(index0, index1)
|
||||
else:
|
||||
self.backing_store[k] = v
|
||||
parent = self
|
||||
for node_name in node_names:
|
||||
parent = self._add_item(parent, node_name, False)
|
||||
self._add_item(parent, leaf_name, True)
|
||||
|
||||
def _del_item(self, parent, path):
|
||||
if len(path) == 1:
|
||||
# leaf
|
||||
name = path[0]
|
||||
item = parent.children_leaves_by_name[name]
|
||||
row = item.row
|
||||
self.beginRemoveRows(self._index_item(parent), row, row)
|
||||
del parent.children_leaves_by_name[name]
|
||||
del parent.children_by_row[row]
|
||||
self.endRemoveRows()
|
||||
else:
|
||||
# node
|
||||
name, *rest = path
|
||||
item = parent.children_nodes_by_name[name]
|
||||
self._del_item(item, rest)
|
||||
if not item.children_by_row:
|
||||
row = item.row
|
||||
self.beginRemoveRows(self._index_item(parent), row, row)
|
||||
del parent.children_nodes_by_name[name]
|
||||
del parent.children_by_row[row]
|
||||
self.endRemoveRows()
|
||||
|
||||
def __delitem__(self, k):
|
||||
self._del_item(self, k.split(self.separator))
|
||||
del self.backing_store[k]
|
||||
|
||||
def index_to_key(self, index):
|
||||
item = index.internalPointer()
|
||||
if item.children_by_row:
|
||||
return None
|
||||
key = item.name
|
||||
item = item.parent
|
||||
while item is not self:
|
||||
key = item.name + self.separator + key
|
||||
item = item.parent
|
||||
return key
|
||||
|
||||
def data(self, index, role):
|
||||
if not index.isValid() or role != QtCore.Qt.DisplayRole:
|
||||
return None
|
||||
else:
|
||||
column = index.column()
|
||||
if column == 0:
|
||||
return index.internalPointer().name
|
||||
else:
|
||||
key = self.index_to_key(index)
|
||||
if key is None:
|
||||
return None
|
||||
else:
|
||||
return self.convert(key, self.backing_store[key],
|
||||
column)
|
||||
|
||||
def convert(self, k, v, column):
|
||||
raise NotImplementedError
|
||||
|
Loading…
Reference in New Issue
Block a user