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Schedule: Poll Inconsistently Causes a Scroll Up

See original GitHub issue

Describe the defect In the snippet below, when I scroll to the bottom of the page (such that the schedule header isn’t visible anymore), then no problem occurs following a poll. However, if I reduce height: 10000px to a smaller number, such as 200px, then the page keeps scrolling to the top after each poll.

<html xmlns="http://www.w3.org/1999/xhtml"
      xmlns:h="http://xmlns.jcp.org/jsf/html"
      xmlns:f="http://xmlns.jcp.org/jsf/core"
      xmlns:p="http://primefaces.org/ui">
    <f:view>
        <h:head>
        </h:head>
        <h:body>
            <h:form>
                <p:poll update="schedule"/>
                <div style="height: 10000px"/>
                <p:schedule id="schedule" value="#{myController.schedule}"/>
            </h:form>
        </h:body>
    </f:view>
</html>

import javax.enterprise.context.RequestScoped;
import org.primefaces.model.DefaultScheduleModel;
import org.springframework.stereotype.Controller;

@RequestScoped
@Controller
public class MyController {

    private DefaultScheduleModel schedule = new DefaultScheduleModel();

    public DefaultScheduleModel getSchedule() {
        return schedule;
    }

    public void setSchedule(DefaultScheduleModel schedule) {
        this.schedule = schedule;
    }
}

Environment:

PF Version: 8.0
JSF version: joinfaces 4.3.3 (primefaces-spring-boot-starter, mojarra-spring-boot-starter).
Affected browsers: Chrome.

Expected behavior There should be no scrolling to top in both cases.

Issue Analytics

State:
Created 3 years ago
Comments:13 (8 by maintainers)

Top GitHub Comments

1reaction

christophs78commented, Oct 13, 2020

Maybe it would be better to update with PF('myschedule').update(); JS instead of p:poll. eg triggered by https://www.w3schools.com/jsref/met_win_setinterval.asp Also see https://primefaces.github.io/primefaces/8_0/#/components/schedule?id=ajax-updates.

0reactions

tandraschkocommented, Oct 13, 2020

Yep

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