using PaintDotNet.Instrument;
using System;
using System.Windows.Forms;

namespace PaintDotNet
{
    class FloatingFormMethod
    {
        /// <summary>
        /// 显示浮动窗口
        /// </summary>
        /// <param name="form">获取已经弹出的窗口对象</param>
        /// <param name="af">没有弹出的窗口对象则创建</param>
        /// <param name="workspace">AppWorkspace的引用</param>
        public static void ShowFloatForm(Form form, FloatingToolForm af, AppWorkspace workspace,bool isLeft = false)
        {
            
            new FloatingFormMethod(workspace).ShowFloatForm(form, af, isLeft);
        }

        /// <summary>
        /// AppWorkspace的引用
        /// </summary>
        private AppWorkspace appWorkspace;

        private FloatingFormMethod(AppWorkspace workspace)
        {
            this.appWorkspace = workspace;
        }

        /// <summary>
        /// 显示浮动窗口
        /// </summary>
        /// <param name="form">获取已经弹出的窗口对象</param>
        /// <param name="af">没有弹出的窗口对象则创建</param>
        private void ShowFloatForm(Form form, FloatingToolForm af,bool isLeft = false)
        {
            if (form == null || form.IsDisposed)
            {
                if (af == null)
                    return;
                SnapObstacle obstacle = af.SnapObstacle;
                SnapManager sm = SnapManager.FindMySnapManager(this.appWorkspace);
                if (sm != null && obstacle.EnableSave)
                {
                    try
                    {
                        if (isLeft)
                        {
                            sm.ParkObstacle(af, this.appWorkspace, HorizontalSnapEdge.Top, VerticalSnapEdge.Left);
                        }
                        else
                        {
                            sm.LoadSnapObstacleData(SystemLayer.Settings.CurrentUser, obstacle);
                        }
                    }
                    catch (Exception)
                    {
                        sm.ParkObstacle(af, this.appWorkspace, HorizontalSnapEdge.Top, VerticalSnapEdge.Right);
                    }
                    af.FormClosing += Af_FormClosing;
                }
                else
                    sm.ParkObstacle(af, this.appWorkspace, HorizontalSnapEdge.Top, VerticalSnapEdge.Right);
                //af.StartPosition = FormStartPosition.CenterScreen;
                Form mainForm = appWorkspace.FindForm();
                if (mainForm != null)
                    //mainForm.Activate();
                af.Show(mainForm/*MainForm.ActiveForm*/);
            }
            else
            {
                form.Activate();
                form.WindowState = FormWindowState.Normal;
            }
        }
        /// <summary>
        /// 浮动窗口消失时保存窗口位置信息
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void Af_FormClosing(object sender, FormClosingEventArgs e)
        {
            SnapObstacle obstacle = ((FloatingToolForm)sender).SnapObstacle;
            SnapManager sm = SnapManager.FindMySnapManager(this.appWorkspace);
            if (sm != null && obstacle.EnableSave)
                sm.SaveSnapObstacleData(SystemLayer.Settings.CurrentUser, obstacle);
        }
    }
}