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Add CSS rule to CSSEngine programmatically [message #1479168]

Wed, 19 November 2014 07:59

Stefan Weiser

Messages: 55
Registered: February 2012

Member

I am using the CSS Style-Engine from e4. I would like to edit or add CSS rules to the CSSEngine during runtime.

Applying the given style to a Control is not enough to solve the problem, as it only applies the style of the engine to the control. I want to alter the style of the engine.

How can I do this? Do I have to implement my own CSSEngine or does the standard engine provide such a feature?

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Re: Add CSS rule to CSSEngine programmatically [message #1479576 is a reply to message #1479168]

Wed, 19 November 2014 14:52

Eclipse User

I'm not sure what "alter the style of the engine" means. Could you elaborate? What are you trying to accomplish?

You can dynamically bring in other style sheets: see the CSS Scratchpad. See the CSSScratchPart's applyCSS() method for an example.

You can add support to expose your own properties (e.g., "Shell { my-special-property: true; }").
You can also expose your own elements, though that's usually better done as a separate CSS Engine.
You can also create your own CSS Engines (e.g., see this thread).

Brian.

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Re: Add CSS rule to CSSEngine programmatically [message #1480338 is a reply to message #1479576]

Thu, 20 November 2014 05:28

Stefan Weiser

Messages: 55
Registered: February 2012

Member

Thank you for the hints.

The code of CSSScratchPart is exactly the feature I'm looking for. That helps me a lot and solves my problems.

The already defined my own CSS properties by using the AbstractCSSPropertySWTHandler. This is really nice and very easy to use.

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