Customizing fields
While Blockly provides many useful fields, your application may have a
specialized case. Here are a few steps to take when customizing fields:
Read the documentation of any fields similar to what you require; they may
provide a useful interface for customization. For example,
dropdowns have a lot of hidden functionality.
Consider using a validator to solve your problem.
Validators allow you to only accept certain values, modify input, or trigger
functionality when a field's value changes.
Consider extending a field.
If there is a field that represents the value type you require, but you want to
modify its editor, its
appearance, or the
text it
displays, you can create a subclass
that inherits the bulk of the functionality, while overriding the specific parts
you want to change.
Create a new field type.
While this is the most powerful option, it is also the most time consuming, and
should generally only be used if you need to store a new value type.
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Last updated 2024-09-18 UTC.
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