Lazy Initialization of Map to avoid using Display Thread #198
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Signed-off-by: Frank Gasdorf <fgdrf@users.sourceforge.net>
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Lazy Initialization of Map to avoid using Display Thread
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On creation of MapImpl instances colourScheme and colorPalette are created. This causes Display thread access via PreferencesStore initialization which is problematic if using MapImpl in Test cases.
To avoid these behavior the refactoring initializes the mentioned instances lazily.