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Description

Tapestry-tagselect is a select component for Tapestry 5 similar to the version selector in recent JIRA-versions.

Screenshot

Usage

Add a dependency to your POM:

<dependency>
  <groupId>se.unbound</groupId>
  <artifactId>tapestry-tagselect</artifactId>
  <version>1.1</version>
</dependency>

Add the component to your template:

<div t:type="tag/tagselect" t:id="tags" t:value="tags" t:encoder="encoder" />

In your page you need a property for the currently selected tags. If the tags are strings, no encoder is necessary, otherwise a ValueEncoder need to be provided via the encoder-attribute.

The component uses an Ajax.Autocompleter when retrieving the possible tag-values so a method for the provideCompletions-event that return a SelectModel is necessary in the page-class as well.

Example

Page-class

public class Index {
    @Persist
    @Property
    private List<String> tags;

    public void onPrepare() {
        if (this.tags == null) {
            this.tags = new ArrayList<String>();
        }
    }

    SelectModel onProvideCompletionsFromTags(final String input) {
        final List<String> result = Arrays.asList("Milestone 1", "Milestone 2", "Milestone 3");
        return new StringSelectModel(result);
    }

    private static class StringSelectModel implements SelectModel {
        private final List<String> strings;

        public StringSelectModel(final List<String> strings) {
            this.strings = strings;
        }

        @Override
        public List<OptionModel> getOptions() {
            final List<OptionModel> options = new ArrayList<OptionModel>();

            for (final String string : this.strings) {
                options.add(new OptionModelImpl(string));
            }

            return options;
        }

        @Override
        public List<OptionGroupModel> getOptionGroups() {
            return null;
        }

        @Override
        public void visit(final SelectModelVisitor visitor) {
        }
    }
}

Template

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
   "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns:t="http://tapestry.apache.org/schema/tapestry_5_0_0.xsd">
  <head>
    <title>Example</title>
  </head>
  <body>
    <form t:type="form">
      <div t:type="tag/tagselect" t:id="tags" t:value="tags" style="width: 400px;"></div>
      <t:submit/>
    </form>
  </body>
</html>