Use combobox with multiple selection
- ComboBox can be configured to allow multiple selection (via multiSelector).
- Use this features in metrics and graphs when selecting publications categories.
- MultiSelector are available in ExtJS 6, and can be used in different ways.
- http://examples.sencha.com/extjs/6.0.1/examples/classic/multiselect/multiselect-demo.html
- http://examples.sencha.com/extjs/6.0.1/examples/kitchensink/#multi-selector