using System; using System.Collections.Generic; using Gtk; using System.Security.Policy; /// /// A namespace that contains everything I've pulled from SilentorBit's website. /// Currently contains: class ListView (https://silentorbit.com/notes/2011/05/gtk-sharp-listview/). /// namespace Ext.SilentorBit { /// /// A single column list, text comes from object.ToString() /// For multicolumns, see ListView<ClassType> /// By SilentorBit from https://silentorbit.com/notes/2011/05/gtk-sharp-listview/ /// public class ListView : ListView { public ListView (string columnTitle) : base(columnTitle) { } protected override void RenderCell (CellRendererText render, int index, object item) { render.Text = item.ToString (); } } /// /// The list only contains one type of object. /// To get multiple columns, pass that number of parameters to the constructor /// and implement RenderCell accordingly. /// public abstract class ListView : TreeView { /// /// List of all items selected /// public T[] SelectedItems { get; private set; } public event Action ItemSelected; public event Action ItemActivated; public bool ResizeableColumns { get; set; } = true; protected abstract void RenderCell (CellRendererText render, int index, T item); ListStore store = new ListStore (typeof(T)); Dictionary storeList = new Dictionary (); List columns = new List (); /// /// Pass one string parameter for every column /// /// /// Column Titles, one parameter for each column. /// public ListView (params string[] columnNames) { this.Model = store; foreach (string s in columnNames) { TreeViewColumn c = this.AppendColumn (s, new CellRendererText (), this.ColumnCellData); c.Resizable = ResizeableColumns; // Make the column resizeable - Added by Starbeamrainbowlabs columns.Add (c); } this.SelectedItems = new T[0]; this.Selection.Changed += HandleSelectionChanged; } private void ColumnCellData (TreeViewColumn column, CellRenderer renderer, ITreeModel model, TreeIter iter) { T item = (T)model.GetValue (iter, 0); CellRendererText textRender = (CellRendererText)renderer; int index = columns.IndexOf (column); RenderCell (textRender, index, item); } #region Add, Remove and Clear Items public void AddItem (T item) { var iter = store.AppendValues (item); storeList.Add (item, iter); } public void ClearItems () { store.Clear (); storeList.Clear (); } public void RemoveItem (T item) { if (! storeList.ContainsKey (item)) return; TreeIter iter = storeList[item]; store.Remove (ref iter); storeList.Remove (item); } #endregion #region Selection and Aktivation triggers void HandleSelectionChanged (object sender, EventArgs e) { TreeSelection selection = (TreeSelection)sender; TreePath[] paths = selection.GetSelectedRows (); T[] items = new T[paths.Length]; for (int n = 0; n < paths.Length; n++) { TreeIter iter; Model.GetIter (out iter, paths[n]); items[n] = (T)Model.GetValue (iter, 0); } SelectedItems = items; var itemEvent = ItemSelected; if (itemEvent != null) itemEvent (items); } protected override void OnRowActivated (TreePath path, TreeViewColumn column) { TreeIter iter; Model.GetIter (out iter, path); T item = (T)Model.GetValue (iter, 0); var e = ItemActivated; if (e != null) e (item); base.OnRowActivated (path, column); } #endregion } }