diff -r cb4e5bbf3a2c -r 3f5e8b0a338e eric6/Graphics/UMLItem.py
--- a/eric6/Graphics/UMLItem.py Thu May 06 19:46:00 2021 +0200
+++ b/eric6/Graphics/UMLItem.py Sat May 08 18:34:08 2021 +0200
@@ -190,12 +190,14 @@
self.shouldAdjustAssociations = True
# 2. ensure the new position is inside the scene
- rect = self.scene().sceneRect()
- if not rect.contains(value):
- # keep the item inside the scene
- value.setX(min(rect.right(), max(value.x(), rect.left())))
- value.setY(min(rect.bottom(), max(value.y(), rect.top())))
- return value
+ scene = self.scene()
+ if scene:
+ rect = scene.sceneRect()
+ if not rect.contains(value):
+ # keep the item inside the scene
+ value.setX(min(rect.right(), max(value.x(), rect.left())))
+ value.setY(min(rect.bottom(), max(value.y(), rect.top())))
+ return value
return QGraphicsItem.itemChange(self, change, value)
@@ -284,4 +286,35 @@
@return dictionary containing data to be persisted
@rtype dict
"""
- return {}
+ return {
+ "id": self.getId(),
+ "x": self.x(),
+ "y": self.y(),
+ "type": self.getItemType(),
+ "model_name": self.model.getName(),
+ }
+
+ @classmethod
+ def fromDict(cls, data, colors=None):
+ """
+ Class method to create a generic UML item from persisted data.
+
+ @param data dictionary containing the persisted data as generated
+ by toDict()
+ @type dict
+ @param colors tuple containing the foreground and background colors
+ @type tuple of (QColor, QColor)
+ @return created UML item
+ @rtype UMLItem
+ """
+ try:
+ model = UMLModel(data["model_name"])
+ itm = cls(model=model,
+ x=0,
+ y=0,
+ colors=colors)
+ itm.setPos(data["x"], data["y"])
+ itm.setId(data["id"])
+ return itm
+ except KeyError:
+ return None
