Changes to the state of the UI5 Controls will be automatically applied via DOM patching and thus the custom setters are not needed anymore.
#Semantic ui browser support code
This allows us to get rid of the custom setters to really reduce code which is also a potential place for issues as the custom setters and the renderers have to be kept in sync. The initial rendering will still be string-based but all updates will be applied by patching the DOM. Therefore, we decided to enhance the rendering engine to support DOM patching out-of-the-box. This leads to additional code which also comes with a dedicated price-tag.
#Semantic ui browser support update
In our experience over the last years, we also noticed that many UI5 Controls which need to optimize their rendering have to implement custom setters to patch their DOM manually to increase the update performance. 11 years later, the browser stack has evolved, the DOM APIs are harmonized, and its performance is quite good. In 2009, we started with string-based rendering which was the fastest option at that point in time. Semantic Rendering is changing the way how the rendering engine of the UI5 Framework works. For a smooth integration of UI5 Web Components into the UI5 Framework we require the following enhancements: Semantic Rendering and CSS Variables. All this is explained in more depth in the blog post: “ UI5 Framework and UI5 Web Components”.
The idea is to use the UI5 Controls as wrappers to connect the UI5 Web Components with the frameworks’ lifecycle and programming model features like the data binding and the integration into the XMLView. In the near future, we will integrate back the UI5 Web Components in the UI5 Framework. This brings a lot of advantages from performance perspective (a UI elements framework with a footprint of 0kB) and it comes with better interoperability so that our UI elements can be shared with any UI framework. With UI5 Web Components, we move the implementation of the UI elements into the web standards layer and the runtime into the browser. In this area we work on the UI5 Web Components, the Semantic Rendering and the CSS Variables. Besides the evolution of the Modular Core and the Tooling we also innovate the area of Rendering and Controls. We fight on various fronts to modernize the framework, to improve the performance, to increase the development experience and to move closer to web standards.
The evolution of the UI5 Framework is a mammoth task.
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