MaterialsPage.qml still uses CuraApplication.getMaterialManager

[bredeker]

After installing this plug-in on Cura 4.4, I noticed I was not able to duplicate Material profiles, and the following was logged when I clicked the respective button:

2019-12-23 00:19:16,951 - WARNING - [MainThread] UM.Qt.QtApplication.__onQmlWarning [369]: file:[…]/cura/4.4/plugins/MaterialSettingsPlugin/MaterialSettingsPlugin/qml/MaterialPreferences/MaterialsPage.qml:132: TypeError: Property 'getMaterialManager' of object CuraApplication(0x600003ce43c0) is not a function

Based on PR #4, it looks like getMaterialManager was removed in the latest API, but the references to it in MaterialsPage.qml were missed. I was able to fix the problem (from what I can tell) by duplicating the materialManager property definition from commit 87655d2 and replacing calls to CuraApplication.getMaterialManager with calls to that property. Redundant declarations across the two files do not seem like a good long-term fix, so I do not think my hack has good value as a PR. I have no prior experience with QML and am not sure what the best practice is, so I thought I would at least submit the issue and let a more experienced hand craft an official solution.

[fieldOfView]

Good catch. This causes Ultimaker/Cura#6864

The complication in fixing this, is that the plugin must also still work with previous versions of Cura. I'll get on it.

[fieldOfView]

This should be fixed in 9ca0c6d