Improve message when no discovery data is found (#25252)

* Improve message when no discovery data is found

It was pointed out its a bit confusing when a device has not been
discovered yet for the discovery/network browser panels as we
only said there was no data. Give the user a better hint
as to why there is no data.

* Improve message when no discovery data is found

It was pointed out its a bit confusing when a device has not been
discovered yet for the discovery/network browser panels as we
only said there was no data. Give the user a better hint
as to why there is no data.

* Improve message when no discovery data is found

It was pointed out its a bit confusing when a device has not been
discovered yet for the discovery/network browser panels as we
only said there was no data. Give the user a better hint
as to why there is no data.

* Improve message when no discovery data is found

It was pointed out its a bit confusing when a device has not been
discovered yet for the discovery/network browser panels as we
only said there was no data. Give the user a better hint
as to why there is no data.

src/panels/config/integrations/integration-panels/bluetooth/bluetooth-advertisement-monitor.ts

@@ -210,6 +210,9 @@ export class BluetoothAdvertisementMonitorPanel extends LitElement {
         .route=${this.route}
         .columns=${this._columns(this.hass.localize)}
         .data=${this._dataWithNamedSourceAndIds(this._data)}
+        .noDataText=${this.hass.localize(
+          "ui.panel.config.bluetooth.no_advertisements_found"
+        )}
         @row-click=${this._handleRowClicked}
         .initialGroupColumn=${this._activeGrouping}
         .initialCollapsedGroups=${this._activeCollapsed}

src/panels/config/integrations/integration-panels/dhcp/dhcp-config-panel.ts

@@ -96,6 +96,9 @@ export class DHCPConfigPanel extends SubscribeMixin(LitElement) {
         .route=${this.route}
         .columns=${this._columns(this.hass.localize)}
         .data=${this._dataWithIds(this._data)}
+        .noDataText=${this.hass.localize(
+          "ui.panel.config.dhcp.no_devices_found"
+        )}
         filter=${this._macAddress || ""}
       ></hass-tabs-subpage-data-table>
     `;

src/panels/config/integrations/integration-panels/ssdp/ssdp-config-panel.ts

@@ -105,6 +105,9 @@ export class SSDPConfigPanel extends SubscribeMixin(LitElement) {
         @grouping-changed=${this._handleGroupingChanged}
         @collapsed-changed=${this._handleCollapseChanged}
         .data=${this._dataWithIds(this._data)}
+        .noDataText=${this.hass.localize(
+          "ui.panel.config.ssdp.no_devices_found"
+        )}
         @row-click=${this._handleRowClicked}
         clickable
       ></hass-tabs-subpage-data-table>

src/panels/config/integrations/integration-panels/zeroconf/zeroconf-config-panel.ts

@@ -112,6 +112,9 @@ export class ZeroconfConfigPanel extends SubscribeMixin(LitElement) {
         @grouping-changed=${this._handleGroupingChanged}
         @collapsed-changed=${this._handleCollapseChanged}
         .data=${this._dataWithIds(this._data)}
+        .noDataText=${this.hass.localize(
+          "ui.panel.config.zeroconf.no_devices_found"
+        )}
         @row-click=${this._handleRowClicked}
         clickable
       ></hass-tabs-subpage-data-table>

src/translations/en.json

@@ -5508,6 +5508,7 @@
           "connection_monitor": "Connection monitor",
           "used_connection_slot_allocations": "Used connection slot allocations",
           "no_connections": "No active connections",
+          "no_advertisements_found": "No matching Bluetooth advertisements found",
           "no_connection_slot_allocations": "No connection slot allocations information available",
           "no_active_connection_support": "This adapter does not support making active (GATT) connections.",
           "address": "Address",
@@ -5528,7 +5529,8 @@
           "title": "DHCP discovery",
           "mac_address": "MAC Address",
           "hostname": "Hostname",
-          "ip_address": "IP Address"
+          "ip_address": "IP Address",
+          "no_devices_found": "No recent DHCP requests found; no matching discoveries detected"
         },
         "thread": {
           "other_networks": "Other networks",
@@ -5577,7 +5579,8 @@
           "ssdp_headers": "SSDP Headers",
           "upnp": "Universal Plug and Play (UPnP)",
           "discovery_information": "Discovery information",
-          "copy_to_clipboard": "Copy to clipboard"
+          "copy_to_clipboard": "Copy to clipboard",
+          "no_devices_found": "No matching SSDP/UPnP discoveries found"
         },
         "zeroconf": {
           "name": "Name",
@@ -5586,7 +5589,8 @@
           "ip_addresses": "IP Addresses",
           "properties": "Properties",
           "discovery_information": "Discovery information",
-          "copy_to_clipboard": "Copy to clipboard"
+          "copy_to_clipboard": "Copy to clipboard",
+          "no_devices_found": "No matching Zeroconf discoveries found"
         },
         "zha": {
           "common": {