Lua Console - open selected file in lua writer dialog, implement drag & drop on lua writer (but fails because it doesn't allow drop on the edit box itself)

BizHawk.MultiClient/tools/LuaConsole.cs

@@ -1238,8 +1238,36 @@ namespace BizHawk.MultiClient
 		}
 
 		private void DoLuaWriter()
+		{
+			ListView.SelectedIndexCollection indexes = LuaListView.SelectedIndices;
+			if (indexes.Count == 0)
+				return;
+
+			if (indexes.Count > 0)
+			{
+				//If/When we want multiple file editing
+				/*
+				for (int x = 0; x < indexes.Count; x++)
+				{
+					var item = luaList[indexes[x]];
+					if (!item.IsSeparator)
+					{
+						OpenLuaWriter(luaList[indexes[x]].Path);
+					}
+				}
+				*/
+				var item = luaList[indexes[0]];
+				if (!item.IsSeparator)
+				{
+					OpenLuaWriter(luaList[indexes[0]].Path);
+				}
+			}
+		}
+
+		private void OpenLuaWriter(string path)
 		{
 			LuaWriter writer = new LuaWriter();
+			writer.CurrentFile = path;
 			writer.Show();
 		}
 	}

BizHawk.MultiClient/tools/LuaWriter.Designer.cs

@@ -29,7 +29,7 @@
         private void InitializeComponent()
         {
 			this.components = new System.ComponentModel.Container();
-			this.LuaText = new LuaWriterBox();
+			this.LuaText = new BizHawk.MultiClient.LuaWriterBox();
 			this.timer = new System.Windows.Forms.Timer(this.components);
 			this.SuspendLayout();
 			// 
@@ -52,6 +52,7 @@
 			// 
 			// LuaWriter
 			// 
+			this.AllowDrop = true;
 			this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
 			this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
 			this.ClientSize = new System.Drawing.Size(843, 441);
@@ -59,6 +60,8 @@
 			this.Name = "LuaWriter";
 			this.Text = "LuaWriter";
 			this.Load += new System.EventHandler(this.LuaWriter_Load);
+			this.DragDrop += new System.Windows.Forms.DragEventHandler(this.LuaWriter_DragDrop);
+			this.DragEnter += new System.Windows.Forms.DragEventHandler(this.LuaWriter_DragEnter);
 			this.ResumeLayout(false);
 
         }

BizHawk.MultiClient/tools/LuaWriter.cs

@@ -7,11 +7,13 @@ using System.Linq;
 using System.Text;
 using System.Windows.Forms;
 using System.Text.RegularExpressions;
+using System.IO;
 
 namespace BizHawk.MultiClient
 {
 	public partial class LuaWriter : Form
 	{
+		public string CurrentFile = "";
 		public Regex keyWords = new Regex("and|break|do|else|if|end|false|for|function|in|local|nil|not|or|repeat|return|then|true|until|while|elseif");
 		public LuaWriter()
 		{
@@ -163,7 +165,51 @@ namespace BizHawk.MultiClient
 
 		private void LuaWriter_Load(object sender, EventArgs e)
 		{
+			if (!String.IsNullOrWhiteSpace(CurrentFile))
+			{
+				LoadCurrentFile();
+			}
+		}
 
+		private void LoadCurrentFile()
+		{
+			var file = new FileInfo(CurrentFile);
+			if (file.Exists == false)
+			{
+				return;
+			}
+
+			using (StreamReader sr = file.OpenText())
+			{
+				StringBuilder luaText = new StringBuilder();
+				string s = "";
+				while ((s = sr.ReadLine()) != null)
+				{
+					luaText.Append(s);
+					luaText.Append('\n');
+				}
+
+				if (luaText.Length > 0)
+				{
+					LuaText.Text = luaText.ToString();
+				}
+			}
+		}
+
+		private void LuaWriter_DragEnter(object sender, DragEventArgs e)
+		{
+			e.Effect = e.Data.GetDataPresent(DataFormats.FileDrop) ? DragDropEffects.Copy : DragDropEffects.None; string[] filePaths = (string[])e.Data.GetData(DataFormats.FileDrop);
+		}
+
+		private void LuaWriter_DragDrop(object sender, DragEventArgs e)
+		{
+			string[] filePaths = (string[])e.Data.GetData(DataFormats.FileDrop);
+			if (Path.GetExtension(filePaths[0]) == (".lua") || Path.GetExtension(filePaths[0]) == (".txt"))
+			{
+				//TODO: save changes
+				CurrentFile = filePaths[0];
+				LoadCurrentFile();
+			}
 		}
 	}
 }