CourseDataGridView.cs :  » Network-Clients » iReaper » IReaper » CourseData » C# / CSharp Open Source

using System;
using System.Threading;
using System.ComponentModel;
using System.Collections.Generic;
using System.Diagnostics;
using System.Text;
using System.Windows.Forms;
using System.Drawing;
using WeifenLuo.WinFormsUI.Docking;

namespace IReaper.CourseData{
    public partial class CourseDataGridView : IReaper.BaseControl.RightClickableDataGridView
    {
        CourseCollection collection;
        Rectangle rec = Rectangle.Empty;

        public CourseDataGridView()
        {
            InitializeComponent();
            collection = new CourseCollection(CourseCollectionType.Common);
            Core.CoreData.PropertyChanged += new PropertyChangedEventHandler(CoreData_PropertyChanged);
            CourseXmlParser.OnBeforeCourseAdded += new EventHandler(BeforeCourseAdded);
        }

        public CourseDataGridView(IContainer container)
        {
            container.Add(this);
            InitializeComponent();
            collection = new CourseCollection(CourseCollectionType.Common);
            Core.CoreData.PropertyChanged += new PropertyChangedEventHandler(CoreData_PropertyChanged);
        }

        protected override void OnSelectionChanged(EventArgs e)
        {
            base.OnSelectionChanged(e);
            Core.CoreData[CoreDataType.CurrentSelectedCourses] = this.GetSelectedCourses();
        }

        /// <summary>
        /// DataGridView
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        protected override void OnCellContextMenuStripNeeded(DataGridViewCellContextMenuStripNeededEventArgs e)
        {
            base.OnCellContextMenuStripNeeded(e);
            if (e.RowIndex < 0)
            { return; }
            //
            DataGridViewRow cRow = this.Rows[e.RowIndex];
            this.courseDataGridViewContextMenu.ContextCourse = cRow.DataBoundItem as Course;
            e.ContextMenuStrip = this.courseDataGridViewContextMenu;
        }

        protected override void OnDataError(bool displayErrorDialogIfNoHandler, DataGridViewDataErrorEventArgs e)
        {
            e.ThrowException = false;
            displayErrorDialogIfNoHandler = false;
            base.OnDataError(displayErrorDialogIfNoHandler, e);
        }

        private void BeforeCourseAdded(object sender, EventArgs e)
        {
            if (this.InvokeRequired)
            {
                this.BeginInvoke(new ThreadStart(delegate()
                {
                    this.BeforeCourseAdded(sender, e);
                }));
                return;
            }
            this.DataSource = null;
        }

        /// <summary>
        /// 
        /// </summary>
        /// <returns></returns>
        private CourseCollection GetSelectedCourses()
        {
            //
            DataGridViewSelectedRowCollection allRows = this.SelectedRows;
            //
            collection.Clear();
            //
            foreach (DataGridViewRow r in allRows)
            {
                //Course
                Course item = r.DataBoundItem as Course;
                //
                if (item == null)
                { continue; }
                collection.Add(item);
            }
            return collection;
        }

        private void CoreData_PropertyChanged(object sender, PropertyChangedEventArgs e)
        {
            if (e.PropertyName == CoreDataType.CurrentViewedCourses.ToString())
            {
                CourseCollection courses = Core.CoreData[CoreDataType.CurrentViewedCourses] as CourseCollection;
                if (courses != null)
                {
                    this.collection.Type = courses.Type;
                }
                this.DataSource = courses;
                //find parent form and activated it.
                DockContent parent = this.FindForm() as DockContent;
                if (parent != null)
                {
                    parent.Activate();
                }
            }
            else if (e.PropertyName == CoreDataType.CurrentFilteredCourses.ToString())
            {
                CourseCollection courses = Core.CoreData[CoreDataType.CurrentFilteredCourses] as CourseCollection;
                if (courses != null)
                {
                    this.collection.Type = courses.Type;
                }
                this.DataSource = courses;
                //find parent form and activated it.
                DockContent parent = this.FindForm() as DockContent;
                if (parent != null)
                {
                    parent.Activate();
                }
            }
        }

        protected override void OnMouseMove(MouseEventArgs e)
        {
            base.OnMouseMove(e);
            if (e.Button == MouseButtons.Left)
            {
                if (this.rec != Rectangle.Empty && !this.rec.Contains(e.X, e.Y))
                {
                    this.DoDragDrop(this.SelectedRows, DragDropEffects.Move | DragDropEffects.Copy);
                }
            }
        }

        protected override void OnMouseDown(MouseEventArgs e)
        {
            base.OnMouseDown(e);
            //Rect
            if(this.SelectedRows.Count == 0)
            { this.rec = Rectangle.Empty; }
            else//
            {
                this.rec = this.DisplayRectangle;
            }
        }

        protected override void OnMouseUp(MouseEventArgs e)
        {
            base.OnMouseUp(e);
            this.rec = Rectangle.Empty;
        }
    }
}