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Saint's questions

Martin Hope
Saint
Asked: 2020-11-03 16:11:02 +0000 UTC
  • 2

我需要获取客户端的时区才能将其传递给页面上的组件参数。该页面使用一个 bean，它使用 EL 表达式从该 bean 接收数据。如何获取服务器时区，我知道：

TimeZone.getDefault()

如何在客户端获取时区（我需要时区 ID）：

new Date().toTimeString().split('(')[1].toString().replace(')','');

value但我不知道如何将客户端时区 ID 的值传递给 bean（或者，也许，立即在 bean 中获取），或者直接传递给组件。请提出任何选择。

javascript
Martin Hope
Saint
Asked: 2020-07-10 17:34:53 +0000 UTC
  • 0

我使用它连接脚本<h:outputScript name="js/js-file.js" library="java" />在整个项目中（在每个页面上）都是可见的。并在没有使用的页面弹出：

类型错误：XXX 未定义

如何限制此脚本在特定页面上的可见性？例如，仅在page1.xhtml.

意思就是h:outputScript把整个项目写在一个地方，这样的脚本有很多。有什么办法可以控制他们的可见性吗？

javascript
Martin Hope
Saint
Asked: 2020-06-29 17:35:38 +0000 UTC
  • 2

问题是：

<p:ajax event="select" listener="#{bean.onSelect}" oncomplete="xxx(#{bean.m})" />

事件处理程序select从所选元素中检索参数m，然后函数接受该参数xxx。但是，正如你所理解的，oncomplete它被调用得更早，并且字段m被拉空了。如何解决这个问题？有没有可能以某种方式抛出jsf中的select事件，然后直接转到客户端？还是有更优雅的解决方案？

javascript
Martin Hope
Saint
Asked: 2020-10-28 23:46:10 +0000 UTC
  • 0

我需要在页面上提供两种语言（英语、俄语）的支持。

据我了解，我需要在资源包中创建 translate.properties、translate_en.properties、translate_ru.properties。

接下来，我将 files = files 和 files = files 写入它们

现在。我如何利用它来提供两种语言？据我所知，我需要创建一个按钮来更改网站上的语言，并从中获取一个键值（显示哪种语言），并以某种方式将其与标记链接在一起。

<p:layou>
    <p:layoutUnit>
        <h3>files</h3>
    </p:layoutUnit>
</p:layout>

我怀疑课堂上还需要写一些别的东西。请帮助我了解整个行动链。

java
Martin Hope
Saint
Asked: 2020-10-25 20:00:44 +0000 UTC
  • 1

http://javastudy.ru/jsf-2/jsf-hello-world-example-primefaces/

我按照这个例子做了所有的事情，但是当我运行“localhost: 8080”时，它给出了 404 错误。

显示正常的html页面，但没有显示jsf。

我在网上看了很多例子，我做的都对，可能是什么问题，请告诉我？好吧，您可以阅读相关信息的建议也很合适:)

java
Martin Hope
Saint
Asked: 2020-10-06 19:23:05 +0000 UTC
  • 2

传递数据时，我调用递归并用完堆栈，原因如下：

类有需要传递给类的Controller_MainForm变量public int cordX, cordY;Raket

这是我正在尝试做的事情：

class Raket
{
    Controller_MainForm control;

    public Raket() 
    {
        control = new Controller_MainForm();

        x = control.cordX;
        y = control.cordY;
    }

但是在类方法中创建Controller_MainForm了类的实例Model

 public partial class Controller_MainForm : Form
{
    View view;
    Model model;
    public int cordX, cordY;

    Thread modelGo;

    public Controller_MainForm() : this(850) { }
    public Controller_MainForm(int sizeField) : this(sizeField, 1) { }
    public Controller_MainForm(int sizeField, int amountRaket) : this(sizeField, amountRaket, 1) { }
    public Controller_MainForm(int sizeField, int amountRaket, int amountAero) : this(sizeField, amountRaket, amountAero, 40) { }
    public Controller_MainForm(int sizeField, int amountRaket, int amountAero, int speedGame)
    {
        InitializeComponent();

        model = new Model(sizeField, amountAero, amountRaket, speedGame);

        view = new View(model);
        this.Controls.Add(view);

        cordX = Convert.ToInt32(textBox1.Text);
        cordY = Convert.ToInt32(textBox2.Text);
    }

    private void Start_Click(object sender, EventArgs e)
    {
        if (model.gameStatus == GameStatus.stoping)
        {
           model.gameStatus = GameStatus.playing;
           modelGo = new Thread(model.Go);
           modelGo.Start();
           view.Invalidate();
        }  
    }

    private void Controller_MainForm_FormClosing(object sender, FormClosingEventArgs e)
    {
        if (modelGo != null)
        {
            model.gameStatus = GameStatus.stoping;
            modelGo.Abort();
        }

        DialogResult dr = MessageBox.Show("Закрыть приложение?" , "Radionavig_24", MessageBoxButtons.YesNoCancel);
        if (dr == DialogResult.Yes)
            e.Cancel = false;
        else
            e.Cancel = true;
    }
}

在模型类中，方法：

class Model
{
    int sizeField;
    int amountRaket;
    int amountAero;
    public int speedGame;

    public GameStatus gameStatus;

    public Raket raket;

    public Model(int sizeField, int amountRaket, int amountAero, int speedGame)
    {
        this.sizeField = sizeField;
        this.amountAero = amountAero;
        this.amountRaket = amountRaket;
        this.speedGame = speedGame;

        raket = new Raket();

        gameStatus = GameStatus.stoping;
    }

    public void Go()
    {
        while (gameStatus == GameStatus.playing)
        {
            Thread.Sleep(speedGame);
            raket.Run();
        }
    }
}

并再次创建一个实例，new Raket()如此循环。如何在不递归的情况下传递数据？Raket()Controller_MainForm

static class Program
{
    /// <summary>
    /// The main entry point for the application.
    /// </summary>
    [STAThread]
    static void Main(string[] arg)
    {
        Controller_MainForm cm;

        Application.EnableVisualStyles();
        Application.SetCompatibleTextRenderingDefault(false);

        switch (arg.Length)
        {
            case 0: cm = new Controller_MainForm(); break;
            case 1: cm = new Controller_MainForm(Convert.ToInt32(arg[0])); break;
            case 2: cm = new Controller_MainForm(Convert.ToInt32(arg[0]), Convert.ToInt32(arg[1])); break;
            case 3: cm = new Controller_MainForm(Convert.ToInt32(arg[0]), Convert.ToInt32(arg[1]), Convert.ToInt32(arg[2])); break;
            case 4: cm = new Controller_MainForm(Convert.ToInt32(arg[0]), Convert.ToInt32(arg[1]), Convert.ToInt32(arg[2]), Convert.ToInt32(arg[3])); break;
            default: cm = new Controller_MainForm(); break;
        }

        Application.Run(cm);
    }
}
c#
Martin Hope
Saint
Asked: 2020-10-03 15:47:40 +0000 UTC
  • 10

我想实现：按钮排列成正方形（作为二维 NxN 数组）。单击按钮时，将旋转一行和一列中的所有按钮。数字 N 是可定制的。一开始我什么都做MainWindow.xaml.cs，他们建议我正常做一切并使用它MVVM。代码MainWindow.xaml.cs：

public partial class MainWindow : Window
{
    public MainWindow()
    {
        InitializeComponent();
    }

    private Button[,] CreateButtons(int quantity)
    {
        Form.Rows = quantity;
        Form.Columns = quantity;
        Button[,] buttons = new Button[quantity, quantity];
        for (int i = 0; i < quantity; i++)
        {
            for (int j = 0; j < quantity; j++)
            {
                buttons[i, j] = new Button();
                buttons[i, j].Width = 100;
                buttons[i, j].Height = 20;
                buttons[i, j].Margin = new Thickness(5,80,0,0);
                buttons[i, j].Click += new RoutedEventHandler(new_button_click);
            }
        }
        return buttons;
    }

    void new_button_click(object sender, RoutedEventArgs e)
    {
        Button btn = sender as Button;
        if (btn != null)
        {
            var rotateTransform = btn.RenderTransform as RotateTransform;
            var transform = new RotateTransform(90 + (rotateTransform == null ? 0 : rotateTransform.Angle));
            transform.CenterX = 50;
            transform.CenterY = 10;
            btn.RenderTransform = transform;
        }
    }

    private void AddToWrapPanel(int quantity, Button[,] buttons)
    {
        for (int i = 0; i < quantity; i++)
            for (int j = 0; j < quantity; j++)
            {
                Form.Children.Add(buttons[i, j]);
            }
    }

    private int GetQuantityButtons()
    {
        ComboBoxItem item = (ComboBoxItem)comboBox1.SelectedItem;
        int count = int.Parse((string)item.Content);
        return count;
    }

    private void СreateButton_Click(object sender, RoutedEventArgs e)
    {
        if (Form.Children.Count > 0)
            Form.Children.Clear();
        int count = GetQuantityButtons();
        Button[,] buttons = CreateButtons(count);
        AddToWrapPanel(count, buttons);
    }
}

现在我开始移动所有东西。

XAML:

<Window x:Class="Di.MainWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:user="clr-namespace:Di"
    Title="Сейф" Height="715.6" Width="840" Left="250" Top="10" Background="Silver" ResizeMode="CanMinimize"
    TextOptions.TextFormattingMode="Display" Icon="Resources/Icon1.ico">
<Window.DataContext>
    <user:MainWindowModel />
</Window.DataContext>
<Grid>
    <ItemsControl Margin="0,30,0,0">
        <UniformGrid x:Name="Form"/>
        <WrapPanel Name="wrapPanel" Background="#FFF2F2F2" />
    </ItemsControl>
    <Button Content="Старт" Height="23" HorizontalAlignment="Left" Margin="457,12,0,0" Name="createButton" VerticalAlignment="Top" Width="75" Click="СreateButton_Click" Command="{Binding Seter}" />
    <ComboBox Height="23" HorizontalAlignment="Left" Margin="368,12,0,0" Name="comboBox1" VerticalAlignment="Top" Width="74" SelectedIndex="0" RenderTransformOrigin="0.5,0.739">
        <ComboBoxItem Content="{Binding Three}" />
        <ComboBoxItem Content="{Binding Four}" />
        <ComboBoxItem Content="{Binding Five}" />
        <ComboBoxItem Content="{Binding Six}" />
    </ComboBox>
    <Label Content="{Binding Lvl}" HorizontalAlignment="Left" Margin="254,10,0,0" VerticalAlignment="Top"/>
</Grid>

代码VM：

public class MainWindowModel
{
    public int Three { get; set; }
    public int Four { get; set; }
    public int Five { get; set; }
    public int Six { get; set; }
    public string Lvl { get; set; }

    public MainWindowModel()
    {
        Three = 3;
        Four = 4;
        Five = 5;
        Six = 6;
        Lvl = "Сложность (3 - 6):";
    }

    private ICommand _seter;

    public ICommand Seter
    {
        get
        {
            return _seter ?? (_seter = new RelayCommand(() =>
              {
                  // действие при вызове команды
              }));
        }

    }

}

到目前为止，只有这样.. 请帮助我转移并完成我计划的时刻。例如：如何VM在服务按钮中创建一个属性RotationAngle？单击“创建”然后使用它们时如何生成一组按钮？如何访问UniformGrid行数和列数并将其与所选中int的关联combobox？

c#
Martin Hope
Saint
Asked: 2020-10-01 20:43:50 +0000 UTC
  • 2

按钮是这样生成的：

private Button[,] CreateButtons(int quantity)
{
    Form.Rows = quantity;
    Form.Columns = quantity;
    Button[,] buttons = new Button[quantity, quantity];
    for (int i = 0; i < quantity; i++)
    {
        for (int j = 0; j < quantity; j++)
        {
            buttons[i, j] = new Button();
            buttons[i, j].Width = 100;
            buttons[i, j].Height = 20;
            buttons[i, j].Margin = new Thickness(5,80,0,0);
            buttons[i, j].Click += new RoutedEventHandler(new_button_click);
        }
    }
    return buttons;
}

他们有一个点击事件处理程序：

void new_button_click(object sender, RoutedEventArgs e)
{
    Button btn = sender as Button;
    if (btn != null)
    {
        var transform = new RotateTransform(90);
        transform.CenterX = 50;
        transform.CenterY = 10;
        btn.RenderTransform = transform;
    }
}

如何实现当您单击一个按钮时，一行和一列中的所有按钮都会旋转。

c#
Martin Hope
Saint
Asked: 2020-10-01 05:47:41 +0000 UTC
  • 3

我想在点击时旋转按钮。认为它应该像这样工作：

void new_button_click(object sender, RoutedEventArgs e)
    {
        Button btn = sender as Button;
        var transform = btn.RenderTransform as RotateTransform;
        transform.Angle += 90;
    }

但它不起作用））怎么了？我想用 C# 代码而不是 XAML 实现旋转。单击时，它会在这一行发誓：

transform.Angle += 90;

例外：

对象引用不指向对象的实例。

c#
Martin Hope
Saint
Asked: 2020-09-30 22:34:55 +0000 UTC
  • 2

我需要在窗体上创建可转动的手柄（单击鼠标，手柄的位置从垂直变为水平，反之亦然）。句柄排列成正方形，就像一个二维 NxN 数组。数字 N 必须是可定制的。我决定创建一个旋转按钮数组。

private Button[,] CreateButtons(int quantity)
{
    Button[,] buttons = new Button[quantity, quantity];
    for (int i = 0; i < quantity; i++)
    {
        for (int j = 0; j < quantity; j++)
        {
            buttons[i, j] = new Button();
            buttons[i, j].Width = 50;
            buttons[i, j].Height = 20;
            buttons[i, j].VerticalAlignment = System.Windows.VerticalAlignment.Top;
            buttons[i, j].HorizontalAlignment = System.Windows.HorizontalAlignment.Left;
            buttons[i, j].Margin = new Thickness(10);
        }
    }
    return buttons;
}

private void AddToWrapPanel(int quantity, Button[,] buttons)
{
    for (int i = 0; i < quantity; i++)
        for (int j = 0; j < quantity; j++)
        {
            wrapPanel.Children.Add(buttons[i, j]);
        }
}

private int GetQuantityButtons()
{
    ComboBoxItem item = (ComboBoxItem)comboBox1.SelectedItem;
    int count = int.Parse((string)item.Content);
    return count;
}

private void СreateButton_Click(object sender, RoutedEventArgs e)
{
    if (wrapPanel.Children.Count > 0)
        wrapPanel.Children.Clear();
    int count = GetQuantityButtons();
    Button[,] buttons = CreateButtons(count);
    AddToWrapPanel(count, buttons);
}

这就是我所拥有的。但问题出在脸上——所有的按钮都排成一排。如何实现矩阵布局？

c#