Make text fields yield keyboard focus on "Esc" in a consistent way

- search fields clear the input and yield if empty
- chat field and actor edit field yield without clearing

OpenRA.Mods.Common/Widgets/Logic/AssetBrowserLogic.cs

@@ -133,7 +133,18 @@ namespace OpenRA.Mods.Common.Widgets.Logic
 
 			filenameInput = panel.Get<TextFieldWidget>("FILENAME_INPUT");
 			filenameInput.OnTextEdited = () => ApplyFilter();
-			filenameInput.OnEscKey = _ => filenameInput.YieldKeyboardFocus();
+			filenameInput.OnEscKey = _ =>
+			{
+				if (string.IsNullOrEmpty(filenameInput.Text))
+					filenameInput.YieldKeyboardFocus();
+				else
+				{
+					filenameInput.Text = "";
+					filenameInput.OnTextEdited();
+				}
+
+				return true;
+			};
 
 			var frameContainer = panel.GetOrNull("FRAME_SELECTOR");
 			if (frameContainer != null)

OpenRA.Mods.Common/Widgets/Logic/Editor/ActorEditLogic.cs

@@ -114,11 +114,7 @@ namespace OpenRA.Mods.Common.Widgets.Logic
 				&& editor.CurrentBrush == editor.DefaultBrush
 				&& Game.RunTime > lastScrollTime + scrollVisibleTimeout;
 
-			actorIDField.OnEscKey = _ =>
-			{
-				actorIDField.YieldKeyboardFocus();
-				return true;
-			};
+			actorIDField.OnEscKey = _ => actorIDField.YieldKeyboardFocus();
 
 			actorIDField.OnTextEdited = () =>
 			{

OpenRA.Mods.Common/Widgets/Logic/Editor/CommonSelectorLogic.cs

@@ -46,8 +46,14 @@ namespace OpenRA.Mods.Common.Widgets.Logic
 			SearchTextField = widget.Get<TextFieldWidget>("SEARCH_TEXTFIELD");
 			SearchTextField.OnEscKey = _ =>
 			{
-				SearchTextField.Text = "";
+				if (string.IsNullOrEmpty(SearchTextField.Text))
 					SearchTextField.YieldKeyboardFocus();
+				else
+				{
+					SearchTextField.Text = "";
+					SearchTextField.OnTextEdited();
+				}
+
 				return true;
 			};
 

OpenRA.Mods.Common/Widgets/Logic/Lobby/LobbyLogic.cs

@@ -436,7 +436,7 @@ namespace OpenRA.Mods.Common.Widgets.Logic
 				return true;
 			};
 
-			chatTextField.OnEscKey = _ => { chatTextField.Text = ""; return true; };
+			chatTextField.OnEscKey = _ => chatTextField.YieldKeyboardFocus();
 
 			lobbyChatPanel = lobby.Get<ScrollPanelWidget>("CHAT_DISPLAY");
 			chatTemplate = lobbyChatPanel.Get("CHAT_TEMPLATE");