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Encode empty containers in container tree if necessary

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You can now be assured that there is ALWAYS at least one child node, except for child nodes of intent profiles which don't exist.

Contributes to issue CURA-6600.
This commit is contained in:
Ghostkeeper 2019-08-22 16:44:52 +02:00
parent 81a33af3aa
commit 46cf7aafa9
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GPG key ID: 86BEF881AE2CF276
4 changed files with 24 additions and 12 deletions
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4
cura/Machines/MaterialNode.py
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@ -53,6 +53,8 @@ class MaterialNode(ContainerNode):
quality_id = quality["id"]
if quality_id not in self.qualities:
self.qualities[quality_id] = QualityNode(quality_id, parent = self)
if not self.qualities:
self.qualities["empty_quality"] = QualityNode("empty_quality", parent = self)
## Triggered when any container is removed, but only handles it when the
# container is removed that this node represents.
@ -62,6 +64,8 @@ class MaterialNode(ContainerNode):
# Remove myself from my parent.
if self.base_file in self.variant.materials:
del self.variant.materials[self.base_file]
if not self.variant.materials:
self.variant.materials["empty_material"] = MaterialNode("empty_material", variant = self.variant)
self.materialChanged.emit(self)
## Triggered when any metadata changed in any container, but only handles