[TAP5-2500] Label broken when inside zone and attached to a Field after that zone

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 5.4
• Component/s: tapestry-core
• Assignee: Unassigned
• Reporter: I D
• Created: 09/Sep/15 10:23
• Updated: 05/Nov/15 12:57

Description

This is just one example, since the same problem is observed for TriggerFrament inside a zone when used in conjunction with a FormFragment outside the zone (and after it).

    <t:zone t:id="myZone">
        <t:label for="myField">Label</t:label>
    </t:zone>
    <t:textfield t:id="myField"/>

The reason this doesn't work is because Label.updateAttributes() uses @HeartbeatDeferred and assumes this invocation will be deferred until the end of the page render. Alas, since the label is inside a zone, which for some reason starts and ends its own heartbeat (nested within, and occluding, the page heartbeat), the invocation is deferred only until the end of the zone render, i.e. - too early.

Apparently this bug was introduced in this commit, which in turn was addressing TAP5-940.

Issue Links

• is broken by: TAP5-940 Zone should fire a heart beat event
• is broken by: TAP5-2308 TriggerFragment mixin is not working if it is applied for a field in a beaneditor
• is related to: TAP5-2509 Regression with radiogroup label in 5.4-beta-37