From aa5f0e027631760479f721adb0a736ac07c12716 Mon Sep 17 00:00:00 2001
From: Nlick47 <2247717951@qq.com>
Date: Fri, 11 Apr 2025 01:31:30 +0800
Subject: [PATCH] =?UTF-8?q?feat:=20=E5=8A=A0=E5=85=A5=E9=A1=B5=E9=9D=A2?=
 =?UTF-8?q?=E8=B7=B3=E8=BD=AC?=
MIME-Version: 1.0
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Content-Transfer-Encoding: 8bit

---
 DownKyi/CustomAction/NumericInputBehavior.cs  | 49 +++++++++++++++++++
 DownKyi/CustomControl/CustomPager.axaml       | 31 ++++++++++++
 DownKyi/CustomControl/CustomPagerViewModel.cs | 17 +++++++
 DownKyi/Languanges/Default.axaml              |  6 ++-
 4 files changed, 102 insertions(+), 1 deletion(-)
 create mode 100644 DownKyi/CustomAction/NumericInputBehavior.cs

diff --git a/DownKyi/CustomAction/NumericInputBehavior.cs b/DownKyi/CustomAction/NumericInputBehavior.cs
new file mode 100644
index 0000000..4a7a769
--- /dev/null
+++ b/DownKyi/CustomAction/NumericInputBehavior.cs
@@ -0,0 +1,49 @@
+using System.Linq;
+using Avalonia.Controls;
+using Avalonia.Input;
+using Avalonia.Interactivity;
+using Avalonia.Xaml.Interactivity;
+
+namespace DownKyi.CustomAction;
+
+public class NumericInputBehavior : Behavior<TextBox>
+{
+    protected override void OnAttached()
+    {
+        if (AssociatedObject != null)
+        {
+            AssociatedObject.AddHandler(InputElement.TextInputEvent, OnTextInput, RoutingStrategies.Tunnel);
+            AssociatedObject.TextChanging += OnTextChanging;
+        }
+        base.OnAttached();
+    }
+    
+    protected override void OnDetaching()
+    {
+        if (AssociatedObject != null)
+        {
+            AssociatedObject.RemoveHandler(InputElement.TextInputEvent, OnTextInput);
+            AssociatedObject.TextChanging -= OnTextChanging;
+        }
+        base.OnDetaching();
+    }
+    
+    private void OnTextInput(object? sender, TextInputEventArgs e)
+    {
+        if (string.IsNullOrEmpty(e.Text) || e.Text.All(char.IsControl)) 
+            return;
+
+        if (!char.IsDigit(e.Text[0]))
+            e.Handled = true; 
+    }
+
+    private void OnTextChanging(object? sender, TextChangingEventArgs e)
+    {
+        if (e.Source is TextBox t && 
+            !string.IsNullOrEmpty(t.Text) && !t.Text.All(char.IsDigit))
+        {
+            t.Text = new string(t.Text.Where(char.IsDigit).ToArray());
+            t.CaretIndex = t.Text?.Length ?? 0;
+        }
+    }
+}
\ No newline at end of file
diff --git a/DownKyi/CustomControl/CustomPager.axaml b/DownKyi/CustomControl/CustomPager.axaml
index 8e3def9..6133ccd 100644
--- a/DownKyi/CustomControl/CustomPager.axaml
+++ b/DownKyi/CustomControl/CustomPager.axaml
@@ -3,6 +3,7 @@
              x:Class="DownKyi.CustomControl.CustomPager"
              xmlns:vmc="clr-namespace:DownKyi.CustomControl"
              x:DataType="vmc:CustomPagerViewModel"
+             xmlns:action="clr-namespace:DownKyi.CustomAction"
              x:CompileBindings="False">
 
     <UserControl.Resources>
@@ -234,5 +235,35 @@
                 VerticalAlignment="Center"
                 Source="{StaticResource ToRightDrawingImage}" />
         </Button>
+       
+        <Panel Margin="20,0,0,0">
+             <StackPanel Orientation="Horizontal"  >
+                 <TextBox 
+                     x:Name="JumpPageNumberTextBox"
+                     Margin="5,0,0,0"
+                     VerticalAlignment="Center"  
+                     MaxLength="5"
+                     Watermark="{DynamicResource JumpTo}"
+                     CornerRadius="4"
+                     Width="65">
+                     <Interaction.Behaviors>
+                         <ExecuteCommandOnKeyDownBehavior 
+                             Key="Enter" 
+                             CommandParameter="{Binding #JumpPageNumberTextBox.Text}"
+                             Command="{Binding JumpCommand}" />
+                         <action:NumericInputBehavior/>
+                     </Interaction.Behaviors>
+                 </TextBox>
+                 
+                 <TextBlock
+                     Margin="5,0,0,0"
+                     VerticalAlignment="Center"
+                            Foreground="#666">
+                     <Run>/</Run>
+                     <Run Text="{Binding Count}" ></Run>
+                     <Run Text="{DynamicResource Page}"></Run>
+                 </TextBlock>
+             </StackPanel>
+        </Panel>
     </StackPanel>
 </UserControl>
\ No newline at end of file
diff --git a/DownKyi/CustomControl/CustomPagerViewModel.cs b/DownKyi/CustomControl/CustomPagerViewModel.cs
index 9bdd83f..e9f2db1 100644
--- a/DownKyi/CustomControl/CustomPagerViewModel.cs
+++ b/DownKyi/CustomControl/CustomPagerViewModel.cs
@@ -1,5 +1,6 @@
 using System;
 using System.ComponentModel;
+using Avalonia.Controls;
 using Prism.Commands;
 
 namespace DownKyi.CustomControl;
@@ -77,6 +78,9 @@ public class CustomPagerViewModel : INotifyPropertyChanged
             }
         }
     }
+    
+    
+    
 
     private int _current;
 
@@ -385,7 +389,20 @@ public class CustomPagerViewModel : INotifyPropertyChanged
 
         SetView();
     }
+    
+    private DelegateCommand<object>? _jumpCommand;
 
+    public DelegateCommand<object> JumpCommand => _jumpCommand ??= new DelegateCommand<object>(JumpExecuted);
+    
+    private void JumpExecuted(object obj)
+    {
+        if (obj is string s && int.TryParse(s,out var i))
+        {
+            Current = (i >= _count) ? _count : i;
+            SetView();
+        }
+    }
+    
     /// <summary>
     /// 控制显示，暴力实现，以后重构
     /// </summary>
diff --git a/DownKyi/Languanges/Default.axaml b/DownKyi/Languanges/Default.axaml
index 348c95a..3964e6b 100644
--- a/DownKyi/Languanges/Default.axaml
+++ b/DownKyi/Languanges/Default.axaml
@@ -352,5 +352,9 @@
     <system:String x:Key="Yes">是</system:String>
     <system:String x:Key="No">否</system:String>
     <system:String x:Key="ApplyToAll">全部应用</system:String>
-
+    
+    
+    <!-- CustomControl -->
+    <system:String x:Key="Page">页</system:String>
+    <system:String x:Key="JumpTo">跳至</system:String>
 </ResourceDictionary>
\ No newline at end of file