labeledcontrolbase.cs

代码模版 codtemplate

using System;
using System.Collections;
using System.ComponentModel;
using System.Drawing;
using System.Data;
using System.Windows.Forms;

namespace CodeTemplate
{
	internal class TagChangedEventArgs: EventArgs
	{
		public TagChangedEventArgs(String tagName, String tagValue)
		{
			this.Name = tagName;
			this.Value = tagValue;
		}

		public readonly String Name;
		public readonly String Value;
	}

	internal delegate void TagChangedEventHandler(Object sender, TagChangedEventArgs e);

	/// <summary>
	/// Summary description for LabeledControlBase.
	/// </summary>
	internal class LabeledControlBase : System.Windows.Forms.UserControl
	{
		private System.Windows.Forms.Label m_label;
		private System.Windows.Forms.Control m_control;

		protected const Int32 s_ctrlDist = 7;
		protected const Int32 s_margin = 1;

		/// <summary> 
		/// Required designer variable.
		/// </summary>
		private System.ComponentModel.Container components = null;

		public static LabeledControlBase CreateControl(Tag tag)
		{
			LabeledControlBase ctrl = null;

			if(tag.IsCombo) 
				ctrl = new LabeledComboBox(tag.ControlType, tag.Formats[tag.ControlType == TagControlType.DropDownControl ? "VALUES" : "FIXEDVALUES"].Arguments);
			else
				ctrl = new LabeledTextBox(tag.ControlType, tag.ControlType == TagControlType.MultiLineControl ? tag.Formats["MULTILINE"].Arguments : String.Empty);

			return ctrl;
		}

		public LabeledControlBase(Control textCtrl)
		{
			// This call is required by the Windows.Forms Form Designer.
			InitializeComponent();

			this.m_label = new System.Windows.Forms.Label();
			this.m_control = textCtrl;
			this.SuspendLayout();
			// 
			// m_label
			// 
			this.m_label.Location = new System.Drawing.Point(1, 1);
			this.m_label.Name = "m_label";
			this.m_label.Size = new System.Drawing.Size(80, 20);
			this.m_label.TabIndex = 0;
			this.m_label.TextAlign = System.Drawing.ContentAlignment.MiddleLeft;
			// 
			// m_control
			// 
			this.m_control.Location = new System.Drawing.Point(88, 1);
			this.m_control.Name = "m_control";
			this.m_control.Size = new System.Drawing.Size(110, 20);
			this.m_control.TabIndex = 1;
			this.m_control.Text = "";
			this.m_control.TextChanged += new System.EventHandler(this.m_control_TextChanged);
			// 
			// LabeledTextBox
			// 
			this.Controls.AddRange(new System.Windows.Forms.Control[] {
																		  this.m_control,
																		  this.m_label});
			this.Name = "LabeledTextBox";
			this.Size = new System.Drawing.Size(200, 24);
			this.SizeChanged += new System.EventHandler(this.LabeledTextBox_SizeChanged);
			this.ResumeLayout(false);

			resizeControls((Width - s_ctrlDist - (2 * s_margin)) / 2); // Initially split 50/50
		}

		public new Int32 Height
		{
			get 
			{ 
				Int32 height = m_label.Height > m_control.Height ? m_label.Height : m_control.Height;
				return height += (2 * s_margin); 
			}
		}

		private void resizeControls(Int32 labelWidth)
		{
			Int32 ctrlHeight = this.Height - (2 * s_margin);

			m_label.Location = new Point(s_margin, s_margin);
			m_label.Size = new Size(labelWidth, m_label.Height);
			m_control.Location = new Point(s_margin + labelWidth + s_ctrlDist, s_margin);
			m_control.Size = new Size(Width - (labelWidth + s_ctrlDist + (2 * s_margin)), m_control.Height);
		}

		private Int32 validateLabelWidth(Int32 newWidth)
		{
			if(newWidth > (Width - s_ctrlDist - (2 * s_margin)) * 0.75f)
				return m_label.Width;

			return newWidth;
		}

		public String Label 
		{
			get { return m_label.Text; }
			set { m_label.Text = value; }
		}

		public override String Text 
		{
			get { return m_control.Text; }
			set { m_control.Text = value; }
		}

		public String TagName
		{
			get { return (String) base.Tag; }
			set { base.Tag = value.ToUpper(); }
		}

		public Int32 LabelWidth 
		{
			get { return m_label.Width; }
			set { m_label.Size = new Size(validateLabelWidth(value), m_label.Height); }
		}

		protected Control Control
		{
			get { return m_control; }
		}

		private void LabeledTextBox_SizeChanged(Object sender, System.EventArgs e)
		{
			resizeControls(m_label.Width);
		}

		private void m_control_TextChanged(Object sender, System.EventArgs e)
		{
			OnTagChanged(new TagChangedEventArgs(this.TagName, m_control.Text));
		}

		#region Custom Events

		public virtual event TagChangedEventHandler TagChanged;

		protected virtual void OnTagChanged(TagChangedEventArgs e) 
		{
			if(TagChanged != null)
				TagChanged(this, e);
		}

		#endregion

		/// <summary> 
		/// Clean up any resources being used.
		/// </summary>
		protected override void Dispose(Boolean disposing)
		{
			if(disposing)
			{
				if(components != null)
					components.Dispose();
			}

			base.Dispose(disposing);
		}

		#region Component Designer generated code
		/// <summary> 
		/// Required method for Designer support - do not modify 
		/// the contents of this method with the code editor.
		/// </summary>
		private void InitializeComponent()
		{
			components = new System.ComponentModel.Container();
		}

		#endregion
	}
}