using System;
using System.Runtime.InteropServices;
using System.Windows.Forms;

namespace UAS_MES_NEW.CustomControl.TextBoxWithIcon
{
    public partial class TextAreaForm : Form
    {

        [DllImport("user32.dll")]
        public static extern bool ReleaseCapture();
        [DllImport("user32.dll")]
        public static extern bool SendMessage(IntPtr hwnd, int wMsg, int wParam, int lParam);
        public const int WM_SYSCOMMAND = 0x0112;
        public const int SC_MOVE = 0xF010;
        public const int HTCAPTION = 0x0002;
        //用于接收TextBoxWithTextArea所在的窗体和对应的控件的名称
        string FormName1;
        string[] ControlName1;
        int X1;
        int Y1;
        //打开窗体的集合
        FormCollection fmCollection = Application.OpenForms;
        public string FormName
        {
            get
            {
                return FormName1;
            }

            set
            {
                FormName1 = value;
            }
        }

        public string[] ControlName
        {
            get
            {
                return ControlName1;
            }

            set
            {
                ControlName1 = value;
            }
        }

        public int X
        {
            get
            {
                return X1;
            }

            set
            {
                X1 = value;
            }
        }

        public int Y
        {
            get
            {
                return Y1;
            }

            set
            {
                Y1 = value;
            }
        }

        public TextAreaForm()
        {
            InitializeComponent();
            this.headBar1.MouseDown += new MouseEventHandler(this.headBar1_MouseDown);
        }

        private void TextAreaForm_Load(object sender, EventArgs e)
        {
            this.Location = new System.Drawing.Point(X1, Y1);
            //指定起始的控件为Form层，然后往下找，因为是按照Parent的顺序填充的字符串，所以需要倒序查找
            Control c = fmCollection[FormName1];
            for (int i = ControlName.Length - 1; i >= 0; i--)
            {
                //如果遍历到i=0就找到了最底层的TextBox
                if (i == 0)
                {
                    //将界面上输入的值填充到文本框中
                    TextArea.Text = c.Controls[ControlName1[i]].Text;
                }
                else
                {
                    c = c.Controls[ControlName1[i]];
                }
            }
        }

        private void headBar1_MouseDown(object sender, MouseEventArgs e)
        {
            ReleaseCapture();
            SendMessage(this.Handle, WM_SYSCOMMAND, SC_MOVE + HTCAPTION, 0);
        }
        //确认按钮，找到窗体，然后找到控件赋值
        private void Confirm_Click(object sender, EventArgs e)
        {
            //同上，只是赋值反过来
            Control c = fmCollection[FormName1];
            for (int i = ControlName.Length - 1; i >= 0; i--)
            {
                if (i == 0)
                {
                    c.Controls[ControlName1[i]].Text = TextArea.Text;
                }
                else
                {
                    c = c.Controls[ControlName1[i]];
                }
            }
            this.Close();
            this.Dispose();
        }
        //清除按钮
        private void Clean_Click(object sender, EventArgs e)
        {
            TextArea.Clear(); 
        }

        private void TextAreaForm_KeyDown(object sender, KeyEventArgs e)
        {
            if (e.KeyData == Keys.Escape) {
                this.Close();
                this.Dispose();
            }
        }
    }
}