Vaadin 8 Designer
Vaadin Designer is a visual WYSIWYG tool for creating Vaadin UIs and views by using drag&drop and direct manipulation. With features such as live external preview and a strong connection between the clean declarative format and the Java code, it allows you to design and layout your UIs with speed and confidence.
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Vaadin Designer is used to create two things:
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A declarative file defining a UI (or part of a UI), also known as a design and
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A companion Java file used to bind the UI components to Java logic.
The declarative format is a feature of the Vaadin Framework, and can be also used and edited without Vaadin Designer. See "Designing UIs Declaratively" for a description of the format.
Vaadin Designer automatically creates and updates a Java file that exposes sub-components of the design as Java member variables, using variable names that you specify. This file provides the magic that creates a static binding between your design and your Java logic. It also enables Java syntax checking for using a design - if you remove from the design a component that your code needs, or change its variable name, you will get a compile-time error.
A design can be the whole UI or a smaller part of the UI, such as a view or its sub-component. A UI or view can contain many designs.