JavaScript Integration helpers

New features

• Provide $element to template event handlers
  • (click)="$server.clickOnText($element.textContent)
  • Refers to the element that has the listener, not $event.target
• Generalize @EventHandler from Template into a Component feature
  • $server callbacks available in element.$server on the client side
  • @EventHandler public void MyComponent.publishedMethod(int someNumber); on the server defines the method, theElement.$server.publishedMethod(42) on the client invokes the method
• Add Element.callFunction for invoking JavaScript methods on elements
  • e.g. myWebComponent.getElement().callFunction("setValue",12)

Fixes

• Throw an exception if arrays are used in a Template Model
• Ensure assertion errors are not shown as empty messages
• Fix unclear error message for @EventHandler method with non-void return type
• Don't include <script> from Template into pre-render HTML

Demos

No changes

Tutorials

• New tutorial on showing the loading indicator

All changes

https://github.com/vaadin/hummingbird/milestone/18?closed=1