Convenience APIs in Flow for defining icon collections

[rolfsmeds]

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Description

Convenience APIs in Flow for defining custom icon collections based on one of the supported formats:

• Old iconset bundle
• SVG sprite
• Standalone SVG files
• Icon fonts

Use cases

As a developer I want to define a custom icon collection in Flow So that I can easily create instances of icons in the collection without a lot of boilerplate or repetition

Acceptance criteria

API scaffolding (e.g. in the form of Java interfaces) for defining custom icon collections with...

• [ ] Enums (or similar) for mapping application-specific icon names to the actual names of icons used in the font, sprite or iconset
• [ ] API for creating icon instances similar to the one for VaadinIcons: IconCollection.ICON_NAME.create()
• [ ] API for defining a default sizing and padding for the icons

General criteria

• [ ] APIs reviewed
• [ ] UX/DX tests in Alpha
• [ ] Documentation: to be added to existing Icons page
• [ ] How to test?
• [ ] Limitations:

Security

• [ ] Security implications have been taken into account (elaborate or link to product security requirement specification if there are implications)