JavaScript in template bindings

New features

• Support for using JavaScript expressions in model bindings

<span>{{firstName + ' ' + lastName}}</span>
<div [class.hidden]="itemCount == 0">Items available: {{itemCount}}</div>

• Support for using multiple bindings and @include statements in the same text node

<span>Hello {{name}}</span>

<span>{{firstName}} {{lastName}}</span>

<div>
    @include header.html@
    @child@
    @include footer.html@
</div>

• Support for getting a list of beans from a model. Like with other getters, the returned list is a proxy object which can be modified to update the model

public interface EmployeesModel extends TemplateModel {
    public List<Employee> getEmployees();
}

• An error message is shown to the end user if loading of a resource (CSS/JS/HTML) fails
• Client-side "debug" mode is now only based on whether the server-side production mode setting
  • ?debug in the query string has no effect
• Low level API for importing a bean into a given part of the model

TemplateModel.importBean(String modelPath, Object bean, Predicate<String> propertyNameFilter)

• Low level API for importing a list of beans, optionally filtering what bean properties to include

TemplateModel.importBeans(String modelPath, List<T> beans, Class<T> beanType, Predicate<String> propertyNameFilter)

Fixes

• For loops in templates are optimized to only update the changed parts instead of recreating the full DOM
• Changed default push transport from long polling to websockets
• Element.getOuterHTML() no longer throws exceptions for template elements with a class attribute

Demos

• Hello world template demo updated to use JavaScript expressions Java HTML
• Address book demo updated to use the new model API Java HTML
• Web site demo updated to use the new model API Java HTML

Tutorials

• Binding Model Data in a Template updated to cover JavaScript and attribute bindings
• Creating Template Contents Dynamically Based on a List of Items updated to support modification of the list
• Basic Integration of a Polymer Web Component updated to better support developers not familiar with web components and bower

All changes

https://github.com/vaadin/hummingbird/issues?q=milestone%3A0.0.10