Move getRequiredParamAsInt into deviceAttachmentSpec.h

Make it accessible for all senseApis.

senseApis/xcbWindow/xcbWindow.cpp

@@ -69,9 +69,12 @@ AttachedWindow::AttachedWindow(
             ": Required xcbXorg function pointers not available");
     }
 
-    windowSelector.display = getRequiredParamAsInt(*spec, "display");
-    windowSelector.screen = getRequiredParamAsInt(*spec, "screen");
-    parseWindowSelector(*spec);
+	windowSelector.display = smo::device::DeviceAttachmentSpec
+		::parseRequiredParamAsInt(*spec, "display");
+	windowSelector.screen = smo::device::DeviceAttachmentSpec
+		::parseRequiredParamAsInt(*spec, "screen");
+
+	parseWindowSelector(*spec);
 
     // Get connection from libxcbXorg
     std::shared_ptr<xcb_xorg::XcbConnection> conn =
@@ -149,32 +152,6 @@ void AttachedWindow::parseWindowSelector(
     }
 }
 
-int AttachedWindow::getRequiredParamAsInt(const smo::device::DeviceAttachmentSpec& spec,
-                                         const std::string& paramName)
-{
-    auto it = std::find_if(
-        spec.providerParams.begin(),
-        spec.providerParams.end(),
-        [&paramName](const auto& param) {
-            return param.first == paramName;
-        }
-    );
-
-    if (it == spec.providerParams.end())
-    {
-        throw std::runtime_error(
-            "No " + paramName + " specified in provider params");
-    }
-
-    try {
-        return std::stoi(it->second);
-    } catch (const std::exception& e) {
-        throw std::runtime_error(
-            "Failed to parse '" + paramName + "' param value '"
-            + it->second + "' as integer: " + e.what());
-    }
-}
-
 std::string AttachedWindow::stringify() const {
     std::ostringstream os;