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index.zulzul<zk>
<window border="normal" title="Market Status" apply="pkg$.TestComposer">
<button id="startProcess" label="add task"/>
<grid id="currentTasks">
<template name="model">
<row>
<cell>${each.name}</cell>
<cell>
<progressmeter id="${each.name}" value="0" width="300px" />
<label id="progress_label" value="${each.progress}"></label>
</cell>
<cell>${each.status}</cell>
</row>
</template>
</grid>
</window>
</zk>
TestComposer.javajava
import org.zkoss.zk.ui.Component;
import org.zkoss.zk.ui.Desktop;
import org.zkoss.zk.ui.Executions;
import org.zkoss.zk.ui.event.Event;
import org.zkoss.zk.ui.select.SelectorComposer;
import org.zkoss.zk.ui.select.annotation.Listen;
import org.zkoss.zk.ui.select.annotation.Wire;
import org.zkoss.zk.ui.util.Clients;
import org.zkoss.zul.Grid;
import org.zkoss.zul.ListModelList;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.Executor;
import java.util.concurrent.Executors;
public class TestComposer extends SelectorComposer {
//just inline for demonstration purposes, you'll have some kind of threadpool in your backend
private Executor exampleThreadpool = Executors.newFixedThreadPool(3);
private int taskId = 0;
private ListModelList<TaskInfo> currentTaskInfos = new ListModelList<>();
private Desktop desktop;
@Wire
private Grid currentTasks;
@Override
public void doAfterCompose(Component comp) throws Exception {
super.doAfterCompose(comp);
desktop = Executions.getCurrent().getDesktop();
desktop.enableServerPush(true);
currentTasks.setModel(currentTaskInfos);
}
@Listen("onClick=#startProcess")
public void startProcess() {
taskId++;
final TaskInfo taskInfo = new TaskInfo("Carrier" + taskId, 0, "Pending");
currentTaskInfos.add(taskInfo);
runTask(taskInfo);
}
public void runTask(TaskInfo taskInfo) {
CompletableFuture.runAsync(() -> {
TaskInfo ti = taskInfo;
ti = updateStatus(ti, 10, "Request Generated");
delay(3000, 10000);
ti = updateStatus(ti, 30, "Carrier Task created");
delay(1000, 3000);
ti = updateStatus(ti, 50, "Document Posted to Exari");
delay(1000, 3000);
ti = updateStatus(ti, 80, "Document Generated");
delay(2000, 2500);
ti = updateStatus(ti, 100, "Email Triggered");
delay(1000, 1000); //optional, wait a little extra before removing the task to show the "Done" status
removeTask(ti);
}, exampleThreadpool);
}
private TaskInfo updateStatus(TaskInfo taskInfo, int progress, String status) {
final TaskInfo updatedTaskInfo = new TaskInfo(taskInfo.getName(), progress, status);
Executions.schedule(desktop, (event) -> {
currentTaskInfos.set(currentTaskInfos.indexOf(taskInfo), updatedTaskInfo);
if(progress == 100) {
//update something in your UI, e.g. checking a checkbox
Clients.log("task done: " + taskInfo.getName());
}
}, new Event("dummy"));
return updatedTaskInfo;
}
private void removeTask(TaskInfo taskInfo) {
Executions.schedule(desktop, (event) -> {
currentTaskInfos.remove(taskInfo);
}, new Event("dummy"));
}
//simulates a background task, or general delay
public void delay(int durationMin, int durationMax) {
try {
Thread.sleep((long) (Math.random() * (durationMax - durationMin) + durationMin));
} catch (InterruptedException e) {
e.printStackTrace();
throw new RuntimeException("interrupted");
}
}
public class TaskInfo {
private String name;
private int progress;
private String status;
public TaskInfo(String name, int progress, String status) {
this.name = name;
this.progress = progress;
this.status = status;
}
public String getName() {
return name;
}
public int getProgress() {
return progress;
}
public String getStatus() {
return status;
}
}
}