mirror of
https://github.com/eggplantlwj/VisionEdit.git
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419 lines
12 KiB
C#
419 lines
12 KiB
C#
// ***********************************************************************
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// Assembly : HZH_Controls
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// Created : 08-08-2019
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//
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// ***********************************************************************
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// <copyright file="UCPagerControlBase.cs">
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// Copyright by Huang Zhenghui(黄正辉) All, QQ group:568015492 QQ:623128629 Email:623128629@qq.com
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// </copyright>
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//
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// Blog: https://www.cnblogs.com/bfyx
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// GitHub：https://github.com/kwwwvagaa/NetWinformControl
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// gitee：https://gitee.com/kwwwvagaa/net_winform_custom_control.git
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//
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// If you use this code, please keep this note.
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// ***********************************************************************
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using System;
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using System.Collections.Generic;
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using System.ComponentModel;
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using System.Drawing;
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using System.Data;
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using System.Linq;
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using System.Text;
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using System.Windows.Forms;
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namespace HZH_Controls.Controls
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{
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/// <summary>
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/// Class UCPagerControlBase.
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/// Implements the <see cref="System.Windows.Forms.UserControl" />
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/// Implements the <see cref="HZH_Controls.Controls.IPageControl" />
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/// </summary>
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/// <seealso cref="System.Windows.Forms.UserControl" />
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/// <seealso cref="HZH_Controls.Controls.IPageControl" />
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[ToolboxItem(false)]
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public class UCPagerControlBase : UserControl, IPageControl
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{
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#region 构造
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/// <summary>
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/// 必需的设计器变量。
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/// </summary>
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private System.ComponentModel.IContainer components = null;
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/// <summary>
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/// 清理所有正在使用的资源。
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/// </summary>
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/// <param name="disposing">如果应释放托管资源，为 true；否则为 false。</param>
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protected override void Dispose(bool disposing)
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{
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if (disposing && (components != null))
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{
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components.Dispose();
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}
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base.Dispose(disposing);
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}
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#region 组件设计器生成的代码
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/// <summary>
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/// 设计器支持所需的方法 - 不要
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/// 使用代码编辑器修改此方法的内容。
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/// </summary>
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private void InitializeComponent()
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{
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this.SuspendLayout();
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//
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// UCPagerControlBase
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//
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this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.None;
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this.Name = "UCPagerControlBase";
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this.Size = new System.Drawing.Size(304, 58);
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this.Load += new System.EventHandler(this.UCPagerControlBase_Load);
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this.ResumeLayout(false);
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}
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#endregion
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#endregion
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private PageModel m_pm = PageModel.Soure;
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/// <summary>
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/// 翻页控件模式
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/// </summary>
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/// <value>The page model.</value>
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public PageModel PageModel
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{
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get { return m_pm; }
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set { m_pm = value; }
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}
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/// <summary>
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/// 总页数
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/// </summary>
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/// <value>The page count.</value>
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public virtual int PageCount
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{
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get;
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set;
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}
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/// <summary>
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/// The m page index
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/// </summary>
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private int m_pageIndex = 1;
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/// <summary>
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/// 当前页码
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/// </summary>
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/// <value>The index of the page.</value>
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public virtual int PageIndex
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{
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get { return m_pageIndex; }
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set { m_pageIndex = value; }
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}
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private List<object> dataSource;
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/// <summary>
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/// 关联的数据源
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/// </summary>
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/// <value>The data source.</value>
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public virtual List<object> DataSource
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{
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get { return dataSource; }
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set
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{
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dataSource = value;
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}
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}
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/// <summary>
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/// 数据源改变时发生
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/// </summary>
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public virtual event PageControlEventHandler ShowSourceChanged;
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/// <summary>
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/// The m page size
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/// </summary>
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private int m_pageSize = 10;
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/// <summary>
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/// 每页显示数量
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/// </summary>
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/// <value>The size of the page.</value>
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[Description("每页显示数量"), Category("自定义")]
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public virtual int PageSize
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{
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get { return m_pageSize; }
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set { m_pageSize = value; }
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}
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/// <summary>
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/// The start index
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/// </summary>
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private int startIndex = 0;
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/// <summary>
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/// 开始的下标
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/// </summary>
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/// <value>The start index.</value>
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[Description("开始的下标"), Category("自定义")]
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public virtual int StartIndex
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{
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get { return startIndex; }
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set
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{
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startIndex = value;
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if (startIndex <= 0)
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startIndex = 0;
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}
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}
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/// <summary>
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/// Initializes a new instance of the <see cref="UCPagerControlBase" /> class.
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/// </summary>
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public UCPagerControlBase()
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{
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InitializeComponent();
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}
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/// <summary>
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/// Handles the Load event of the UCPagerControlBase control.
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/// </summary>
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/// <param name="sender">The source of the event.</param>
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/// <param name="e">The <see cref="EventArgs" /> instance containing the event data.</param>
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private void UCPagerControlBase_Load(object sender, EventArgs e)
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{
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if (PageModel == HZH_Controls.Controls.PageModel.Soure)
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{
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if (DataSource == null)
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ShowBtn(false, false);
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else
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{
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ShowBtn(false, DataSource.Count > PageSize);
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}
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}
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else
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{
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if (PageCount <= 1)
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{
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ShowBtn(false, false);
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}
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else
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{
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ShowBtn(false, PageCount > 1);
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}
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}
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}
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/// <summary>
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/// 第一页
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/// </summary>
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public virtual void FirstPage()
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{
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if (PageModel == HZH_Controls.Controls.PageModel.Soure)
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{
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startIndex = 0;
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var s = GetCurrentSource();
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if (ShowSourceChanged != null)
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{
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ShowSourceChanged(s);
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}
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}
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else
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{
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startIndex = 0;
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PageIndex = 1;
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SetShow();
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if (ShowSourceChanged != null)
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{
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ShowSourceChanged(this);
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}
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}
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}
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/// <summary>
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/// 上一页
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/// </summary>
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public virtual void PreviousPage()
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{
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if (PageModel == HZH_Controls.Controls.PageModel.Soure)
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{
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if (startIndex == 0)
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return;
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startIndex -= m_pageSize;
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if (startIndex < 0)
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startIndex = 0;
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var s = GetCurrentSource();
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if (ShowSourceChanged != null)
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{
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ShowSourceChanged(s);
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}
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}
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else
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{
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if (PageIndex <= 1)
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return;
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PageIndex--;
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SetShow();
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if (ShowSourceChanged != null)
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{
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ShowSourceChanged(this);
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}
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}
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}
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/// <summary>
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/// 下一页
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/// </summary>
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public virtual void NextPage()
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{
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if (PageModel == HZH_Controls.Controls.PageModel.Soure)
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{
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if (startIndex + m_pageSize >= DataSource.Count)
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{
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return;
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}
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startIndex += m_pageSize;
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if (startIndex < 0)
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startIndex = 0;
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var s = GetCurrentSource();
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if (ShowSourceChanged != null)
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{
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ShowSourceChanged(s);
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}
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}
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else
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{
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if (PageIndex >= PageCount)
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return;
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PageIndex++;
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SetShow();
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if (ShowSourceChanged != null)
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{
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ShowSourceChanged(this);
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}
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}
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}
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/// <summary>
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/// 最后一页
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/// </summary>
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public virtual void EndPage()
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{
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if (PageModel == HZH_Controls.Controls.PageModel.Soure)
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{
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if (DataSource == null)
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{
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if (ShowSourceChanged != null)
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{
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ShowSourceChanged(null);
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}
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return;
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}
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startIndex = DataSource.Count - m_pageSize;
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if (startIndex < 0)
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startIndex = 0;
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var s = GetCurrentSource();
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if (ShowSourceChanged != null)
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{
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ShowSourceChanged(s);
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}
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}
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else
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{
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PageIndex = PageCount;
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SetShow();
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if (ShowSourceChanged != null)
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{
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ShowSourceChanged(this);
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}
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}
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}
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/// <summary>
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/// 刷新数据
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/// </summary>
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public virtual void Reload()
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{
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if (PageModel == HZH_Controls.Controls.PageModel.Soure)
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{
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var s = GetCurrentSource();
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if (ShowSourceChanged != null)
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{
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ShowSourceChanged(s);
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}
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}
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else
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{
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if (ShowSourceChanged != null)
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{
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ShowSourceChanged(this);
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}
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}
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}
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/// <summary>
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/// 获取当前页数据
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/// </summary>
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/// <returns>List<System.Object>.</returns>
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public virtual List<object> GetCurrentSource()
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{
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if (DataSource == null || DataSource.Count <= 0)
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return null;
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int intShowCount = m_pageSize;
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if (intShowCount + startIndex > DataSource.Count)
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intShowCount = DataSource.Count - startIndex;
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object[] objs = new object[intShowCount];
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DataSource.CopyTo(startIndex, objs, 0, intShowCount);
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var lst = objs.ToList();
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bool blnLeft = false;
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bool blnRight = false;
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if (lst.Count > 0)
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{
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if (DataSource.IndexOf(lst[0]) > 0)
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{
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blnLeft = true;
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}
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else
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{
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blnLeft = false;
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}
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if (DataSource.IndexOf(lst[lst.Count - 1]) >= DataSource.Count - 1)
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{
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blnRight = false;
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}
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else
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{
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blnRight = true;
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}
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}
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ShowBtn(blnLeft, blnRight);
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return lst;
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}
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/// <summary>
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/// 控制按钮显示
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/// </summary>
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/// <param name="blnLeftBtn">是否显示上一页，第一页</param>
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/// <param name="blnRightBtn">是否显示下一页，最后一页</param>
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protected virtual void ShowBtn(bool blnLeftBtn, bool blnRightBtn)
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{ }
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private void SetShow()
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{
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bool blnLeft = false;
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bool blnRight = false;
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if (PageCount > 0)
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{
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if (PageIndex > 1)
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{
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blnLeft = true;
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}
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else
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{
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blnLeft = false;
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}
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if (PageIndex >= PageCount)
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{
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blnRight = false;
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}
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else
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{
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blnRight = true;
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}
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}
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ShowBtn(blnLeft, blnRight);
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}
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}
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}
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