Poderosa - Add focus reporting mode (DECSET/DECRST 1004) for Poderosa

poderosa-focus-reporting.diff

diff --git a/TerminalEmulator/TerminalBase.cs b/TerminalEmulator/TerminalBase.cs
index 5d4eb09..810da88 100644
--- a/TerminalEmulator/TerminalBase.cs
+++ b/TerminalEmulator/TerminalBase.cs
@@ -343,6 +343,10 @@ public abstract class AbstractTerminal : ICharProcessor, IByteAsyncInputStream {
             return false;
         }
 
+        public virtual bool GetFocusReportingMode() {
+            return false;
+        }
+
         #region IByteAsyncInputStream
         public void OnReception(ByteDataFragment data) {
             try {
diff --git a/TerminalEmulator/TerminalControl.cs b/TerminalEmulator/TerminalControl.cs
index 6588cc4..e127d90 100644
--- a/TerminalEmulator/TerminalControl.cs
+++ b/TerminalEmulator/TerminalControl.cs
@@ -774,6 +774,10 @@ public class TerminalControl : CharacterDocumentViewer {
             base.OnGotFocus(args);
             if (!this.EnabledEx)
                 return;
+            if (GetTerminal().GetFocusReportingMode()) {
+                byte[] data = new byte[] { 0x1b, 0x5b, 0x49 };
+                TransmitDirect(data, 0, data.Length);
+            }
 
             if (this.CharacterDocument != null) { //初期化過程のときは無視
 
@@ -787,6 +791,10 @@ public class TerminalControl : CharacterDocumentViewer {
             base.OnLostFocus(args);
             if (!this.EnabledEx)
                 return;
+            if (GetTerminal().GetFocusReportingMode()) {
+                byte[] data = new byte[] { 0x1b, 0x5b, 0x4f };
+                TransmitDirect(data, 0, data.Length);
+            }
 
             if (_inIMEComposition)
                 ClearIMEComposition();
@@ -1297,4 +1305,4 @@ internal static class DrawingPerformance {
     }
 
 
-}
¥ No newline at end of file
+}
diff --git a/TerminalEmulator/XTerm.cs b/TerminalEmulator/XTerm.cs
index 7aac73f..75673aa 100644
--- a/TerminalEmulator/XTerm.cs
+++ b/TerminalEmulator/XTerm.cs
@@ -51,6 +51,7 @@ private enum MouseTrackingProtocol {
 
         private MouseTrackingState _mouseTrackingState = MouseTrackingState.Off;
         private MouseTrackingProtocol _mouseTrackingProtocol = MouseTrackingProtocol.Normal;
+        private bool _focusReportingMode = false;
         private int _prevMouseRow = -1;
         private int _prevMouseCol = -1;
         private MouseButtons _mouseButton = MouseButtons.None;
@@ -68,6 +69,10 @@ public XTerm(TerminalInitializeInfo info)
             InitTabStops();
         }
 
+        public override bool GetFocusReportingMode() {
+            return _focusReportingMode;
+        }
+
         public override void ProcessChar(char ch) {
             if (_gotEscape) {
                 _gotEscape = false;
@@ -639,8 +644,7 @@ public XTerm(TerminalInitializeInfo info)
                     ResetMouseTracking((set) ? MouseTrackingState.Any : MouseTrackingState.Off);
                     return ProcessCharResult.Processed;
                 case "1004": // Send FocusIn/FocusOut events
-                    // Not supported
-                    ResetMouseTracking(MouseTrackingState.Off);
+                    _focusReportingMode = set;
                     return ProcessCharResult.Processed;
                 case "1005": // Enable UTF8 Mouse Mode
                     if (set) {