Question

我正在处理单页wicket应用程序。当用户点击导航项时，会打开一个新选项卡。要求是有两种类型的面板，一种是普通面板，另一种是自动刷新面板。

我有一个TabPanel类，它从Panel扩展，实际上包含了管理标签的所有选项卡和方法，如添加，删除，设置当前。

以下是我添加到TabPanel的客户计时器。

private class AutoRefreshTimer extends AbstractAjaxTimerBehavior {
    public AutoRefreshTimer(Duration updateInterval) {
        super(updateInterval);
    }
    @Override
    protected void onTimer(AjaxRequestTarget target) {
        Tab currentTab = getCurrentTab();
        if(currentTab != null) {
            if(currentTab.getPanel() instanceof AutoRefreshPanel) {
                AutoRefreshPanel ajaxRefreshPanel = (AutoRefreshPanel) currentTab.getPanel();
                ajaxRefreshPanel.onRefresh(target);
            }
        }
    }
}

以下是添加计时器'autoRefreshTimer'的方法，它是TabPanel类中的实例变量。

private void addNewAutoRefreshTimer(final Duration autoRefreshInterval) {
    autoRefreshTimer = new AutoRefreshTimer(autoRefreshInterval);
    add(autoRefreshTimer);
}

以下是控制计时器的方法：

public void startAutoRefreshTimer(final AjaxRequestTarget target, final Duration autoRefreshInterval) {
    if(!autoRefreshTimer.isStopped()) 
        addNewAutoRefreshTimer(autoRefreshInterval);
    autoRefreshTimer.restart(target);
}

public void stopAutoRefreshTimer(final AjaxRequestTarget target, final Duration autoRefreshInterval) {
    if(autoRefreshTimer.isStopped())
        addNewAutoRefreshTimer(autoRefreshInterval);
    autoRefreshTimer.stop(target);
}

public void toggleAutoRefreshTimer(final AjaxRequestTarget target){
    Tab currentTab = getCurrentTab();
    if(currentTab != null) {
        if(currentTab.getPanel() instanceof AutoRefreshPanel) {
            AutoRefreshPanel ajaxRefreshPanel = (AutoRefreshPanel)currentTab.getPanel();
            this.autoRefreshInterval = ajaxRefreshPanel.getAutoRefreshInterval();
            startAutoRefreshTimer(target, this.autoRefreshInterval);
            return;
        }
    }
    stopAutoRefreshTimer(target, this.autoRefreshInterval);
}

当用户在选项卡之间切换时，计时器在本地服务器中启动和停止，无论是打开新的，还是切换到已打开，关闭当前选择上一个选项卡的电流，或关闭另一个选项卡而不切换当前。但是当我在位于远程位置的登台服务器中测试相同时，计时器在以下情况下失败。

以下是在远程中创建问题的步骤：

1. Open two Normal tabs.
2. Open a tab containing AutoRefreshPanel.
3. Close 1st or 2nd normal tab by keeping the tab containing AutoRefreshPanel active/current. This expect the timer to be
fired/running.
4. Switch to the remaining Normal tab. This stops the timer in local server but not in Remote.

除了上述所有其他方案中的步骤外，计时器在本地和远程都按预期启动和停止。

//更新：我找到了解决此问题的方法。但不确定它是最好的。以下是我所做的更改：

private class AutoRefreshTimer extends AbstractAjaxTimerBehavior {
    public AutoRefreshTimer(Duration updateInterval) {
        super(updateInterval);
    }
    @Override
    protected void onTimer(AjaxRequestTarget target) {
        Tab currentTab = getCurrentTab();
        if(currentTab != null) {
            if(currentTab.getPanel() instanceof AutoRefreshPanel) {
                AutoRefreshPanel ajaxRefreshPanel = (AutoRefreshPanel) currentTab.getPanel();
                ajaxRefreshPanel.onRefresh(target);
                return; // added return
            }
        }
        stop(target); // added a call to stop method.
    }
}

// Replaced startAutoRefreshTimer, stopAutoRefreshTimer and toggleAutoRefreshTimer with the following method:
public void manageAutoRefreshTimer(final AjaxRequestTarget target){
    Tab currentTab = getCurrentTab();
    if(currentTab != null) {
        if(currentTab.getPanel() instanceof AutoRefreshPanel) {
            AutoRefreshPanel ajaxRefreshPanel = (AutoRefreshPanel)currentTab.getPanel();
            this.autoRefreshInterval = ajaxRefreshPanel.getAutoRefreshInterval();
            if(!autoRefreshTimer.isStopped()) 
                addNewAutoRefreshTimer(autoRefreshInterval);
            autoRefreshTimer.restart(target);
        }
    }
}

无法停止使用AbstractAjaxTimerBehavior创建的计时器

0 个答案: