using System;
using System.Threading;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace PaintDotNet
{
    public class TransferProgressDialog : PdnBaseForm
    {
        private ProgressBar progressBar;
        private Button btnCancel;
        private Label lblTitle;
        private Label lblProgress;

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

        /// <summary>
        /// 执行异步方法的ProgressDialog，本Dialog需要调用者打开关闭
        /// </summary>
        /// <param name="title">标题</param>
        /// <param name="msg">处理信息</param>
        /// <param name="proc">同步方法</param>
        /// <param name="onCancel">取消事件</param>
        /// <param name="canceltext">取消按钮文本</param>
        /// <returns>Dialog实例</returns>
        public static TransferProgressDialog CreatDialog(string title, string msg, EventHandler onCancel, string canceltext = null)
        {
            var dialog = new TransferProgressDialog();
            dialog.Text = title;
            dialog.ProcessMsg = msg;
            dialog.CancelClicked += onCancel;
            dialog.ProgressBar.Style = ProgressBarStyle.Marquee;
            if (string.IsNullOrEmpty(canceltext))
                dialog.btnCancel.Text = canceltext;
            return dialog;
        }

        /// <summary>
        /// 执行同步方法的ProgressDialog，本Dialog自动执行打开关闭
        /// </summary>
        /// <param name="title">标题</param>
        /// <param name="msg">处理信息</param>
        /// <param name="proc">同步方法</param>
        /// <param name="onCancel">取消事件</param>
        /// <param name="canceltext">取消按钮文本</param>
        public static void ShowDialog(string title, string msg, Action proc, EventHandler onCancel = null, string canceltext = null)
        {
            var dialog = new TransferProgressDialog();
            dialog.Text = title;
            dialog.ProcessMsg = String.IsNullOrWhiteSpace(msg) ? "Please waiting..." : msg;
            dialog.ProgressBar.Style = ProgressBarStyle.Marquee;
            if (onCancel != null)
            { dialog.CancelClicked += onCancel; }
            else
            {
                dialog.CancelVisible = false;
            }
            if (string.IsNullOrEmpty(canceltext))
                dialog.btnCancel.Text = canceltext;

            new Task(() =>
            {
                proc();
                try//防止取消后关闭引发异常
                {
                    dialog.Invoke(new Action(dialog.Close));
                }
                catch { }
            }).Start();
            dialog.ShowDialog();
        }

        public System.Drawing.Color lblTitleBackColor
        {
            set
            {
                this.lblTitle.BackColor = value;
            }
        }


        public string Title

        {
            get
            {
                return this.Text;
            }

            set
            {
                Text = value;
            }
        }

        public string ProcessMsg
        {
            get
            {
                return this.lblProgress.Text;
            }

            set
            {
                this.lblProgress.Text = value;
            }
        }

        public event EventHandler CancelClicked;

        protected virtual void OnCancelClicked()
        {
            if (CancelClicked != null)
            {
                CancelClicked(this, EventArgs.Empty);
            }
        }

        public ProgressBar ProgressBar
        {
            get
            {
                return this.progressBar;
            }
        }

        public bool CancelEnabled
        {
            get
            {
                return this.btnCancel.Enabled;
            }

            set
            {
                this.btnCancel.Enabled = value;
            }
        }

        public bool CancelVisible
        {
            get
            {
                return this.btnCancel.Visible;
            }

            set
            {
                this.btnCancel.Visible = value;
            }
        }

        public TransferProgressDialog()
        {
            PdnBaseForm.RegisterFormHotKey(
                Keys.Escape,
                delegate (Keys keys)
                {
                    OnCancelClicked();
                    return true;
                });

            InitializeComponent();
        }

        protected override void OnLoad(EventArgs e)
        {
            SystemLayer.UI.DisableCloseBox(this);
            base.OnLoad(e);
        }

        public override void LoadResources()
        {
            this.btnCancel.Text = PdnResources.GetString("Form.CancelButton.Text");
            base.LoadResources();
        }

        /// <summary>
        /// Clean up any resources being used.
        /// </summary>
        /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
        protected override void Dispose(bool disposing)
        {
            if (disposing && (components != null))
            {
                components.Dispose();
            }
            base.Dispose(disposing);
        }

        #region Windows Form 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()
        {
            this.progressBar = new System.Windows.Forms.ProgressBar();
            this.btnCancel = new System.Windows.Forms.Button();
            this.lblTitle = new System.Windows.Forms.Label();
            this.lblProgress = new System.Windows.Forms.Label();
            this.SuspendLayout();
            // 
            // progressBar
            // 
            this.progressBar.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Left)));
            this.progressBar.Location = new System.Drawing.Point(10, 34);
            this.progressBar.Name = "progressBar";
            this.progressBar.Size = new System.Drawing.Size(355, 22);
            this.progressBar.TabIndex = 0;
            // 
            // btnCancel
            // 
            this.btnCancel.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Left)));
            this.btnCancel.DialogResult = System.Windows.Forms.DialogResult.Cancel;
            this.btnCancel.Location = new System.Drawing.Point(281, 63);
            this.btnCancel.Name = "btnCancel";
            this.btnCancel.Size = new System.Drawing.Size(84, 26);
            this.btnCancel.TabIndex = 1;
            this.btnCancel.Text = "cancelButton";
            this.btnCancel.UseVisualStyleBackColor = true;
            this.btnCancel.Click += new System.EventHandler(this.CancelButton_Click);
            // 
            // lblTitle
            // 
            this.lblTitle.AutoEllipsis = true;
            this.lblTitle.BackColor = System.Drawing.Color.White;
            this.lblTitle.Dock = System.Windows.Forms.DockStyle.Top;
            this.lblTitle.Font = new System.Drawing.Font("宋体", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(134)));
            this.lblTitle.ForeColor = System.Drawing.Color.Black;
            this.lblTitle.Location = new System.Drawing.Point(0, 0);
            this.lblTitle.Name = "lblTitle";
            this.lblTitle.Padding = new System.Windows.Forms.Padding(3);
            this.lblTitle.Size = new System.Drawing.Size(378, 20);
            this.lblTitle.TabIndex = 2;
            this.lblTitle.Text = "itemText";
            this.lblTitle.Visible = false;
            // 
            // lblProgress
            // 
            this.lblProgress.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Left)));
            this.lblProgress.AutoEllipsis = true;
            this.lblProgress.Font = new System.Drawing.Font("宋体", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(134)));
            this.lblProgress.Location = new System.Drawing.Point(8, 10);
            this.lblProgress.Name = "lblProgress";
            this.lblProgress.Size = new System.Drawing.Size(358, 19);
            this.lblProgress.TabIndex = 5;
            // 
            // TransferProgressDialog
            // 
            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.None;
            this.BackColor = System.Drawing.SystemColors.Control;
            this.CancelButton = this.btnCancel;
            this.ClientSize = new System.Drawing.Size(378, 98);
            this.Controls.Add(this.lblProgress);
            this.Controls.Add(this.progressBar);
            this.Controls.Add(this.lblTitle);
            this.Controls.Add(this.btnCancel);
            this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedSingle;
            this.MaximizeBox = false;
            this.MinimizeBox = false;
            this.Name = "TransferProgressDialog";
            this.ShowIcon = false;
            this.StartPosition = System.Windows.Forms.FormStartPosition.CenterParent;
            this.Text = "";
            this.Controls.SetChildIndex(this.btnCancel, 0);
            this.Controls.SetChildIndex(this.lblTitle, 0);
            this.Controls.SetChildIndex(this.progressBar, 0);
            this.Controls.SetChildIndex(this.lblProgress, 0);
            this.ResumeLayout(false);

        }
        #endregion

        private void CancelButton_Click(object sender, EventArgs e)
        {
            OnCancelClicked();
            this.Close();
        }
    }
}