Implement ValueProvider for Table Column

[jreznot]

Environment

• Platform version: 7.0.0
• Client type: Web

Description of the bug or enhancement

Implement lightweight replacement for generated column that can produce simple types: boolean / string / date / int / long / etc

Features:

• generate checkbox if Boolean type is used
• format using correct locale settings of logged in user
• print to Excel by default

Limitations:

• not sortable for now
• group by is not supported
• type should be declared before datasource is set, e.g. from XML

Usage example:

<groupTable id="coloursTable" width="100%"
            dataContainer="coloursDs">
    <actions>
        <action id="create" type="create"/>
        <action id="edit" type="edit"/>
        <action id="remove" type="remove"/>
        <action id="refresh" type="refresh"/>
        <action id="excel" type="excel"/>
    </actions>
    <columns>
        <column id="name"/>
        <column id="description"/>
        <column id="someColumn" caption="Test generated field"/>
        <column id="demoValueColumn" type="boolean" caption="Demo"/>
    </columns>
</groupTable>

Controller:

@Subscribe
private void init(InitEvent event) {
    coloursTable.getColumn("demoValueColumn")
            .setValueProvider(colour -> true);
}

// OR
@Install(to = "coloursTable.demoValueColumn", subject = "valueProvider")
private Boolean generate(Colour colour) {
    return true;
}