Use tooltip to show connection state (#362)

* Use tooltip to show connection state; Show running status even when module is disconnected

* Not show tooltip on Edge deivce

src/Model/DeviceItem.ts

@@ -13,6 +13,7 @@ export class DeviceItem extends TreeItem implements QuickPickItem {
         public description: string) {
         super(deviceId);
         this.contextValue = "device";
+        this.tooltip = this.connectionState;
         this.collapsibleState = TreeItemCollapsibleState.Collapsed;
     }
 }

src/Model/ModuleItem.ts

@@ -16,13 +16,14 @@ export class ModuleItem extends TreeItem {
         public readonly contextValue: string) {
         super(moduleId);
         this.deviceId = deviceItem.deviceId;
+        this.tooltip = connectionState;
         this.command = {
             command: "azure-iot-toolkit.getModule",
             title: "",
             arguments: [this],
         };
-        if (connectionState === "Connected") {
-            this.description = runtimeStatus ? `${connectionState} (${runtimeStatus})` : connectionState;
+        if (runtimeStatus) {
+            this.description = runtimeStatus;
         }
     }
 }

src/utility.ts

@@ -200,12 +200,12 @@ export class Utility {
                 const moduleId = module.moduleId.substring(1);
                 if (desiredTwin.systemModules && desiredTwin.systemModules[moduleId]) {
                     return new ModuleItem(deviceItem, module.moduleId, module.connectionString, module.connectionState,
-                        isConnected && reportedTwin ? this.getModuleRuntimeStatus(moduleId, reportedTwin.systemModules) : undefined, iconPath, "edge-module");
+                        reportedTwin ? this.getModuleRuntimeStatus(moduleId, reportedTwin.systemModules) : undefined, iconPath, "edge-module");
                 }
             } else {
                 if (desiredTwin.modules && desiredTwin.modules[module.moduleId]) {
                     return new ModuleItem(deviceItem, module.moduleId, module.connectionString, module.connectionState,
-                        isConnected && reportedTwin ? this.getModuleRuntimeStatus(module.moduleId, reportedTwin.modules) : undefined, iconPath, "edge-module");
+                        reportedTwin ? this.getModuleRuntimeStatus(module.moduleId, reportedTwin.modules) : undefined, iconPath, "edge-module");
                 }
             }
             const moduleType = module.moduleId.startsWith("$") ? "edge-module" : "module";
@@ -292,13 +292,11 @@ export class Utility {
         return deviceList.map((device) => {
             const isConnected = device.connectionState.toString() === "Connected";
             const state: string = isConnected ? "on" : "off";
-            if (isConnected) {
-                device.description = device.connectionState.toString();
-            }
             let deviceType: string;
             if (edgeDeviceIdSet.has(device.deviceId)) {
                 deviceType = "edge";
                 device.contextValue = "edge";
+                device.tooltip = "";
             } else {
                 deviceType = "device";
             }