Initial upload. Not currently functional as a mod. Includes some slightly refactored source code as well as the original mission this was debuted in zipped up as reference + example of usage.

functions/build/fn_factoryBuildConfirmClient.sqf

@@ -0,0 +1,111 @@
+/*
+ *	Author: Clarky
+ *	Usage: 	
+ *		[_hq, _vehicle,  _cost, _buildTime] call CLF_fnc_factoryBuildConfirmClient;
+ *
+ *		
+ *	
+ *	Purpose:
+ *		
+ *
+ */
+ 
+params ["_hq", "_vehicle", "_cost", "_buildTime", "_player"];
+
+missionNamespace setVariable ["buildActive", true];
+missionNamespace setVariable ["cancelBuild", false];
+
+_player playMoveNow "Acts_carFixingWheel";
+
+private _endTime = time + _buildTime;
+
+[_hq, _vehicle, _cost, _buildTime, _endTime, _player] spawn {
+	params ["_hq", "_vehicle", "_cost", "_buildTime", "_endTime", "_player"];
+
+	// Load the 'display' handling input events
+	private _display = findDisplay 46;
+	// Add an event handler to be able to cancel the build
+	private _keyboardCancel = _display displayAddEventHandler [
+		// Handle keyboard clicks as extra verification tools
+		"KeyDown",
+		{
+			params ["", "_key"];
+
+			switch (_key) do
+			{
+				case 1: // Escape
+				{
+					missionNamespace setVariable [
+						"cancelBuild",
+						true
+					];
+				};
+			};
+			false;
+		}
+	];
+
+	private _mouseCancel = _display displayAddEventHandler [
+		// Handle LMB/RMB click
+		"MouseButtonDown",
+		{
+			params ["", "_button"];
+
+			switch (_button) do
+			{
+				case 1: // RMB
+				{
+					missionNamespace setVariable [
+						"cancelBuild",
+						true
+					];
+				};
+			};
+			false;
+		}
+	];
+
+	waitUntil { animationState player == "Acts_carFixingWheel" };
+	while { missionNamespace getVariable ["buildActive", false]; } do {
+		
+		private _remainingTIme = ceil (_endTime - time);
+		
+		hintSilent format ["Remaining Build Time: %1\n\nRMB or ESC to cancel", _remainingTime max 0];
+
+		if (animationState player != "Acts_carFixingWheel" && (missionNamespace getVariable ["buildActive", false]) && (_vehicle getVariable "buildComplete")) then {
+			player playMoveNow "Acts_carFixingWheel";
+		};
+
+		if ((missionNamespace getVariable "cancelBuild") || !(alive _vehicle)) then {	
+			[
+				"CLF_CancelFactoryBuildServer",
+				[
+					_hq, 
+					_vehicle, 
+					_cost, 
+					_player
+				] 
+			] call CBA_fnc_serverEvent;
+
+			missionNamespace setVariable ["buildActive", false];
+		};
+
+		if (_vehicle getVariable "buildComplete") then {
+			missionNamespace setVariable ["buildActive", false];
+		};
+
+		sleep 0.2;
+
+		if (!(missionNamespace getVariable ["buildActive", false])) then {
+			
+			hintSilent "";
+
+			if (animationState player == "Acts_carFixingWheel") then {
+				player switchMove ""; 
+			};
+
+			_display displayRemoveEventHandler ["MouseButtonDown", _mouseCancel];
+			_display displayRemoveEventHandler ["KeyDown", _keyboardCancel];
+		}
+	};
+};