using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.ComponentModel;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
namespace SunCreate.Vipf.Client.UI.CityDoor
{
/// <summary>
/// 分页控件
/// </summary>
public partial class PageControl : UserControl, INotifyPropertyChanged
{
#region 事件
/// <summary>
/// 分页事件
/// </summary>
public event EventHandler<PageChangedEventArgs> PageChanged;
#endregion
#region 变量
private ObservableCollection<PageControlItemModel> _collection = new ObservableCollection<PageControlItemModel>();
private List<PageControlItemModel> _list = null;
#endregion
#region 属性
private int _FontSize = 12;
/// <summary>
/// 文字字体大小
/// </summary>
public int FontSize
{
get { return _FontSize; }
set
{
_FontSize = value;
OnPropertyChanged("FontSize");
CalcPageNumList(); //计算页码
}
}
#endregion
#region 分页相关属性
private int _PageCount = 1;
/// <summary>
/// 总页数
/// </summary>
public int PageCount
{
get { return _PageCount; }
set
{
_PageCount = value;
OnPropertyChanged("PageCount");
}
}
private int _Page = 1;
/// <summary>
/// 当前页码
/// </summary>
public int Page
{
get { return _Page; }
set
{
_Page = value;
OnPropertyChanged("Page");
CalcPageNumList(); //计算页码
}
}
private int _RecordCount = 0;
/// <summary>
/// 记录总数
/// </summary>
public int RecordCount
{
get { return _RecordCount; }
set
{
_RecordCount = value;
OnPropertyChanged("RecordCount");
CalcPageNumList(); //计算页码
}
}
private int _PageSize = 10;
/// <summary>
/// 每页记录数
/// </summary>
public int PageSize
{
get { return _PageSize; }
set
{
_PageSize = value;
OnPropertyChanged("PageSize");
CalcPageNumList(); //计算页码
}
}
private int _ContinuousCount = 3;
/// <summary>
/// 当前页码右边连续页码数
/// </summary>
public int ContinuousCount
{
get { return _ContinuousCount; }
set
{
_ContinuousCount = value;
OnPropertyChanged("_ContinuousCount");
CalcPageNumList(); //计算页码
}
}
#endregion
#region 构造函数
public PageControl()
{
InitializeComponent();
this.itemsControl.ItemsSource = _collection;
}
#endregion
#region 单击页码事件
private void btnNum_Click(object sender, RoutedEventArgs e)
{
if (PageChanged != null)
{
Button btn = sender as Button;
PageControlItemModel itemModel = btn.CommandParameter as PageControlItemModel;
if (itemModel.Page != Page)
{
Page = itemModel.Page;
CalcPageNumList();
PageChangedEventArgs args = new PageChangedEventArgs(itemModel.Page);
PageChanged(sender, args);
}
}
}
#endregion
#region 计算页码
/// <summary>
/// 计算页码
/// </summary>
private void CalcPageNumList()
{
PageCount = (RecordCount - 1) / PageSize + 1; //计算总页数PageCount
_list = new List<PageControlItemModel>();
//第一页
PageControlItemModel item = new PageControlItemModel(1, Page);
_list.Add(item);
//当前页码连续页码
for (int i = Page - ContinuousCount; i <= Page + ContinuousCount; i++)
{
if (i > 0 && i < PageCount)
{
item = new PageControlItemModel(i, Page);
if (!_list.Exists(a => a.Page == item.Page))
{
_list.Add(item);
}
}
}
//最后一页
item = new PageControlItemModel(PageCount, Page);
if (!_list.Exists(a => a.Page == item.Page))
{
_list.Add(item);
}
for (int i = _list.Count - 1; i > 0; i--)
{
if (_list[i].Page - _list[i - 1].Page > 1)
{
_list.Insert(i, new PageControlItemModel(0, Page, 2));
}
}
//上一页下一页
if (Page == 1)
{
this.btnPrePage.IsEnabled = false;
this.btnPrePage.Foreground = new SolidColorBrush((Color)ColorConverter.ConvertFromString("#88dddddd"));
}
else
{
this.btnPrePage.IsEnabled = true;
this.btnPrePage.Foreground = new SolidColorBrush((Color)ColorConverter.ConvertFromString("#fff"));
}
if (Page == PageCount)
{
this.btnNextPage.IsEnabled = false;
this.btnNextPage.Foreground = new SolidColorBrush((Color)ColorConverter.ConvertFromString("#88dddddd"));
}
else
{
this.btnNextPage.IsEnabled = true;
this.btnNextPage.Foreground = new SolidColorBrush((Color)ColorConverter.ConvertFromString("#fff"));
}
_collection.Clear();
_list.ForEach(a => { _collection.Add(a); });
}
#endregion
#region 上一页
private void btnPrePage_Click(object sender, RoutedEventArgs e)
{
int prePage = Page - 1;
if (prePage < 1) prePage = 1;
if (prePage != Page)
{
Page = prePage;
CalcPageNumList();
PageChangedEventArgs args = new PageChangedEventArgs(prePage);
PageChanged(sender, args);
}
}
#endregion
#region 下一页
private void btnNextPage_Click(object sender, RoutedEventArgs e)
{
int nextPage = Page + 1;
if (nextPage > PageCount) nextPage = PageCount;
if (nextPage != Page)
{
Page = nextPage;
CalcPageNumList();
PageChangedEventArgs args = new PageChangedEventArgs(nextPage);
PageChanged(sender, args);
}
}
#endregion
#region INotifyPropertyChanged接口
public event PropertyChangedEventHandler PropertyChanged;
protected void OnPropertyChanged(string name)
{
if (PropertyChanged != null)
{
PropertyChanged(this, new PropertyChangedEventArgs(name));
}
}
#endregion
}
#region 分页控件Item Model
/// <summary>
/// 分页控件Item Model
/// </summary>
public class PageControlItemModel : INotifyPropertyChanged
{
private int _Type = 1;
/// <summary>
/// 类型(1数字 2省略号)
/// </summary>
public int Type
{
get { return _Type; }
set
{
_Type = value;
OnPropertyChanged("Type");
if (_Type == 1)
{
NumVisible = Visibility.Visible;
OmitVisible = Visibility.Collapsed;
}
else
{
NumVisible = Visibility.Collapsed;
OmitVisible = Visibility.Visible;
}
}
}
private bool _IsCurrentPage;
/// <summary>
/// 是否当前页码
/// </summary>
public bool IsCurrentPage
{
get { return _IsCurrentPage; }
set
{
_IsCurrentPage = value;
OnPropertyChanged("IsCurrentPage");
if (_IsCurrentPage)
{
CurrentPageColor = new SolidColorBrush((Color)ColorConverter.ConvertFromString("#00f0ff"));
}
else
{
CurrentPageColor = new SolidColorBrush(Colors.White);
}
}
}
private SolidColorBrush _CurrentPageColor = new SolidColorBrush(Colors.White);
/// <summary>
/// 当前页码颜色
/// </summary>
public SolidColorBrush CurrentPageColor
{
get { return _CurrentPageColor; }
set
{
_CurrentPageColor = value;
OnPropertyChanged("CurrentPageColor");
}
}
private int _Page;
/// <summary>
/// 页码
/// </summary>
public int Page
{
get { return _Page; }
set
{
_Page = value;
OnPropertyChanged("Page");
}
}
private Visibility _NumVisible = Visibility.Visible;
/// <summary>
/// 数字可见
/// </summary>
public Visibility NumVisible
{
get { return _NumVisible; }
set
{
_NumVisible = value;
OnPropertyChanged("NumVisible");
}
}
private Visibility _OmitVisible = Visibility.Collapsed;
/// <summary>
/// 省略号可见
/// </summary>
public Visibility OmitVisible
{
get { return _OmitVisible; }
set
{
_OmitVisible = value;
OnPropertyChanged("OmitVisible");
}
}
/// <summary>
/// 分页控件Item Model
/// </summary>
/// <param name="page">页码</param>
/// <param name="currentPage">当前页码</param>
/// <param name="type">类型(1数字 2省略号)</param>
public PageControlItemModel(int page, int currentPage, int type = 1)
{
Type = type;
Page = page;
IsCurrentPage = page == currentPage;
}
#region INotifyPropertyChanged接口
public event PropertyChangedEventHandler PropertyChanged;
protected void OnPropertyChanged(string name)
{
if (PropertyChanged != null)
{
PropertyChanged(this, new PropertyChangedEventArgs(name));
}
}
#endregion
}
#endregion
#region 分页事件参数
/// <summary>
/// 分页事件参数
/// </summary>
public class PageChangedEventArgs : EventArgs
{
private int _Page = 1;
/// <summary>
/// 当前页码
/// </summary>
public int Page
{
get
{
return _Page;
}
}
/// <summary>
/// 分页事件参数
/// </summary>
/// <param name="page">当前页码</param>
public PageChangedEventArgs(int page)
{
_Page = page;
}
}
#endregion
}
