feat(proto): add EraseText RPC for InputText replace semantics

proto/driverpb/driver.pb.go

@@ -213,6 +213,50 @@ func (x *Text) GetValue() string {
 	return ""
 }
 
+type EraseTextRequest struct {
+	state          protoimpl.MessageState `protogen:"open.v1"`
+	CharacterCount int32                  `protobuf:"varint,1,opt,name=character_count,json=characterCount,proto3" json:"character_count,omitempty"`
+	unknownFields  protoimpl.UnknownFields
+	sizeCache      protoimpl.SizeCache
+}
+
+func (x *EraseTextRequest) Reset() {
+	*x = EraseTextRequest{}
+	mi := &file_driverpb_driver_proto_msgTypes[4]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
+}
+
+func (x *EraseTextRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*EraseTextRequest) ProtoMessage() {}
+
+func (x *EraseTextRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_driverpb_driver_proto_msgTypes[4]
+	if x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use EraseTextRequest.ProtoReflect.Descriptor instead.
+func (*EraseTextRequest) Descriptor() ([]byte, []int) {
+	return file_driverpb_driver_proto_rawDescGZIP(), []int{4}
+}
+
+func (x *EraseTextRequest) GetCharacterCount() int32 {
+	if x != nil {
+		return x.CharacterCount
+	}
+	return 0
+}
+
 type Selector struct {
 	state         protoimpl.MessageState `protogen:"open.v1"`
 	Value         string                 `protobuf:"bytes,1,opt,name=value,proto3" json:"value,omitempty"`
@@ -222,7 +266,7 @@ type Selector struct {
 
 func (x *Selector) Reset() {
 	*x = Selector{}
-	mi := &file_driverpb_driver_proto_msgTypes[4]
+	mi := &file_driverpb_driver_proto_msgTypes[5]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -234,7 +278,7 @@ func (x *Selector) String() string {
 func (*Selector) ProtoMessage() {}
 
 func (x *Selector) ProtoReflect() protoreflect.Message {
-	mi := &file_driverpb_driver_proto_msgTypes[4]
+	mi := &file_driverpb_driver_proto_msgTypes[5]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -247,7 +291,7 @@ func (x *Selector) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use Selector.ProtoReflect.Descriptor instead.
 func (*Selector) Descriptor() ([]byte, []int) {
-	return file_driverpb_driver_proto_rawDescGZIP(), []int{4}
+	return file_driverpb_driver_proto_rawDescGZIP(), []int{5}
 }
 
 func (x *Selector) GetValue() string {
@@ -268,7 +312,7 @@ type Image struct {
 
 func (x *Image) Reset() {
 	*x = Image{}
-	mi := &file_driverpb_driver_proto_msgTypes[5]
+	mi := &file_driverpb_driver_proto_msgTypes[6]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -280,7 +324,7 @@ func (x *Image) String() string {
 func (*Image) ProtoMessage() {}
 
 func (x *Image) ProtoReflect() protoreflect.Message {
-	mi := &file_driverpb_driver_proto_msgTypes[5]
+	mi := &file_driverpb_driver_proto_msgTypes[6]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -293,7 +337,7 @@ func (x *Image) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use Image.ProtoReflect.Descriptor instead.
 func (*Image) Descriptor() ([]byte, []int) {
-	return file_driverpb_driver_proto_rawDescGZIP(), []int{5}
+	return file_driverpb_driver_proto_rawDescGZIP(), []int{6}
 }
 
 func (x *Image) GetPng() []byte {
@@ -326,7 +370,7 @@ type HierarchyJSON struct {
 
 func (x *HierarchyJSON) Reset() {
 	*x = HierarchyJSON{}
-	mi := &file_driverpb_driver_proto_msgTypes[6]
+	mi := &file_driverpb_driver_proto_msgTypes[7]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -338,7 +382,7 @@ func (x *HierarchyJSON) String() string {
 func (*HierarchyJSON) ProtoMessage() {}
 
 func (x *HierarchyJSON) ProtoReflect() protoreflect.Message {
-	mi := &file_driverpb_driver_proto_msgTypes[6]
+	mi := &file_driverpb_driver_proto_msgTypes[7]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -351,7 +395,7 @@ func (x *HierarchyJSON) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use HierarchyJSON.ProtoReflect.Descriptor instead.
 func (*HierarchyJSON) Descriptor() ([]byte, []int) {
-	return file_driverpb_driver_proto_rawDescGZIP(), []int{6}
+	return file_driverpb_driver_proto_rawDescGZIP(), []int{7}
 }
 
 func (x *HierarchyJSON) GetJson() string {
@@ -371,7 +415,7 @@ type SnapshotResponse struct {
 
 func (x *SnapshotResponse) Reset() {
 	*x = SnapshotResponse{}
-	mi := &file_driverpb_driver_proto_msgTypes[7]
+	mi := &file_driverpb_driver_proto_msgTypes[8]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -383,7 +427,7 @@ func (x *SnapshotResponse) String() string {
 func (*SnapshotResponse) ProtoMessage() {}
 
 func (x *SnapshotResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_driverpb_driver_proto_msgTypes[7]
+	mi := &file_driverpb_driver_proto_msgTypes[8]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -396,7 +440,7 @@ func (x *SnapshotResponse) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use SnapshotResponse.ProtoReflect.Descriptor instead.
 func (*SnapshotResponse) Descriptor() ([]byte, []int) {
-	return file_driverpb_driver_proto_rawDescGZIP(), []int{7}
+	return file_driverpb_driver_proto_rawDescGZIP(), []int{8}
 }
 
 func (x *SnapshotResponse) GetHierarchy() *HierarchyJSON {
@@ -422,7 +466,7 @@ type Duration struct {
 
 func (x *Duration) Reset() {
 	*x = Duration{}
-	mi := &file_driverpb_driver_proto_msgTypes[8]
+	mi := &file_driverpb_driver_proto_msgTypes[9]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -434,7 +478,7 @@ func (x *Duration) String() string {
 func (*Duration) ProtoMessage() {}
 
 func (x *Duration) ProtoReflect() protoreflect.Message {
-	mi := &file_driverpb_driver_proto_msgTypes[8]
+	mi := &file_driverpb_driver_proto_msgTypes[9]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -447,7 +491,7 @@ func (x *Duration) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use Duration.ProtoReflect.Descriptor instead.
 func (*Duration) Descriptor() ([]byte, []int) {
-	return file_driverpb_driver_proto_rawDescGZIP(), []int{8}
+	return file_driverpb_driver_proto_rawDescGZIP(), []int{9}
 }
 
 func (x *Duration) GetMillis() int64 {
@@ -468,7 +512,7 @@ type HealthStatus struct {
 
 func (x *HealthStatus) Reset() {
 	*x = HealthStatus{}
-	mi := &file_driverpb_driver_proto_msgTypes[9]
+	mi := &file_driverpb_driver_proto_msgTypes[10]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -480,7 +524,7 @@ func (x *HealthStatus) String() string {
 func (*HealthStatus) ProtoMessage() {}
 
 func (x *HealthStatus) ProtoReflect() protoreflect.Message {
-	mi := &file_driverpb_driver_proto_msgTypes[9]
+	mi := &file_driverpb_driver_proto_msgTypes[10]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -493,7 +537,7 @@ func (x *HealthStatus) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use HealthStatus.ProtoReflect.Descriptor instead.
 func (*HealthStatus) Descriptor() ([]byte, []int) {
-	return file_driverpb_driver_proto_rawDescGZIP(), []int{9}
+	return file_driverpb_driver_proto_rawDescGZIP(), []int{10}
 }
 
 func (x *HealthStatus) GetReady() bool {
@@ -528,7 +572,7 @@ type SwipeRequest struct {
 
 func (x *SwipeRequest) Reset() {
 	*x = SwipeRequest{}
-	mi := &file_driverpb_driver_proto_msgTypes[10]
+	mi := &file_driverpb_driver_proto_msgTypes[11]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -540,7 +584,7 @@ func (x *SwipeRequest) String() string {
 func (*SwipeRequest) ProtoMessage() {}
 
 func (x *SwipeRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_driverpb_driver_proto_msgTypes[10]
+	mi := &file_driverpb_driver_proto_msgTypes[11]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -553,7 +597,7 @@ func (x *SwipeRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use SwipeRequest.ProtoReflect.Descriptor instead.
 func (*SwipeRequest) Descriptor() ([]byte, []int) {
-	return file_driverpb_driver_proto_rawDescGZIP(), []int{10}
+	return file_driverpb_driver_proto_rawDescGZIP(), []int{11}
 }
 
 func (x *SwipeRequest) GetFrom() *Point {
@@ -588,7 +632,7 @@ type PressKeyRequest struct {
 
 func (x *PressKeyRequest) Reset() {
 	*x = PressKeyRequest{}
-	mi := &file_driverpb_driver_proto_msgTypes[11]
+	mi := &file_driverpb_driver_proto_msgTypes[12]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -600,7 +644,7 @@ func (x *PressKeyRequest) String() string {
 func (*PressKeyRequest) ProtoMessage() {}
 
 func (x *PressKeyRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_driverpb_driver_proto_msgTypes[11]
+	mi := &file_driverpb_driver_proto_msgTypes[12]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -613,7 +657,7 @@ func (x *PressKeyRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use PressKeyRequest.ProtoReflect.Descriptor instead.
 func (*PressKeyRequest) Descriptor() ([]byte, []int) {
-	return file_driverpb_driver_proto_rawDescGZIP(), []int{11}
+	return file_driverpb_driver_proto_rawDescGZIP(), []int{12}
 }
 
 func (x *PressKeyRequest) GetKey() string {
@@ -636,7 +680,7 @@ type RecentLogsRequest struct {
 
 func (x *RecentLogsRequest) Reset() {
 	*x = RecentLogsRequest{}
-	mi := &file_driverpb_driver_proto_msgTypes[12]
+	mi := &file_driverpb_driver_proto_msgTypes[13]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -648,7 +692,7 @@ func (x *RecentLogsRequest) String() string {
 func (*RecentLogsRequest) ProtoMessage() {}
 
 func (x *RecentLogsRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_driverpb_driver_proto_msgTypes[12]
+	mi := &file_driverpb_driver_proto_msgTypes[13]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -661,7 +705,7 @@ func (x *RecentLogsRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use RecentLogsRequest.ProtoReflect.Descriptor instead.
 func (*RecentLogsRequest) Descriptor() ([]byte, []int) {
-	return file_driverpb_driver_proto_rawDescGZIP(), []int{12}
+	return file_driverpb_driver_proto_rawDescGZIP(), []int{13}
 }
 
 func (x *RecentLogsRequest) GetSinceUnixMillis() int64 {
@@ -687,7 +731,7 @@ type LogEntries struct {
 
 func (x *LogEntries) Reset() {
 	*x = LogEntries{}
-	mi := &file_driverpb_driver_proto_msgTypes[13]
+	mi := &file_driverpb_driver_proto_msgTypes[14]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -699,7 +743,7 @@ func (x *LogEntries) String() string {
 func (*LogEntries) ProtoMessage() {}
 
 func (x *LogEntries) ProtoReflect() protoreflect.Message {
-	mi := &file_driverpb_driver_proto_msgTypes[13]
+	mi := &file_driverpb_driver_proto_msgTypes[14]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -712,7 +756,7 @@ func (x *LogEntries) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use LogEntries.ProtoReflect.Descriptor instead.
 func (*LogEntries) Descriptor() ([]byte, []int) {
-	return file_driverpb_driver_proto_rawDescGZIP(), []int{13}
+	return file_driverpb_driver_proto_rawDescGZIP(), []int{14}
 }
 
 func (x *LogEntries) GetEntries() []*LogEntry {
@@ -734,7 +778,7 @@ type LogEntry struct {
 
 func (x *LogEntry) Reset() {
 	*x = LogEntry{}
-	mi := &file_driverpb_driver_proto_msgTypes[14]
+	mi := &file_driverpb_driver_proto_msgTypes[15]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -746,7 +790,7 @@ func (x *LogEntry) String() string {
 func (*LogEntry) ProtoMessage() {}
 
 func (x *LogEntry) ProtoReflect() protoreflect.Message {
-	mi := &file_driverpb_driver_proto_msgTypes[14]
+	mi := &file_driverpb_driver_proto_msgTypes[15]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -759,7 +803,7 @@ func (x *LogEntry) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use LogEntry.ProtoReflect.Descriptor instead.
 func (*LogEntry) Descriptor() ([]byte, []int) {
-	return file_driverpb_driver_proto_rawDescGZIP(), []int{14}
+	return file_driverpb_driver_proto_rawDescGZIP(), []int{15}
 }
 
 func (x *LogEntry) GetUnixMillis() int64 {
@@ -799,7 +843,7 @@ type MetricsRequest struct {
 
 func (x *MetricsRequest) Reset() {
 	*x = MetricsRequest{}
-	mi := &file_driverpb_driver_proto_msgTypes[15]
+	mi := &file_driverpb_driver_proto_msgTypes[16]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -811,7 +855,7 @@ func (x *MetricsRequest) String() string {
 func (*MetricsRequest) ProtoMessage() {}
 
 func (x *MetricsRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_driverpb_driver_proto_msgTypes[15]
+	mi := &file_driverpb_driver_proto_msgTypes[16]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -824,7 +868,7 @@ func (x *MetricsRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use MetricsRequest.ProtoReflect.Descriptor instead.
 func (*MetricsRequest) Descriptor() ([]byte, []int) {
-	return file_driverpb_driver_proto_rawDescGZIP(), []int{15}
+	return file_driverpb_driver_proto_rawDescGZIP(), []int{16}
 }
 
 func (x *MetricsRequest) GetBundleId() string {
@@ -845,7 +889,7 @@ type MetricsResponse struct {
 
 func (x *MetricsResponse) Reset() {
 	*x = MetricsResponse{}
-	mi := &file_driverpb_driver_proto_msgTypes[16]
+	mi := &file_driverpb_driver_proto_msgTypes[17]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -857,7 +901,7 @@ func (x *MetricsResponse) String() string {
 func (*MetricsResponse) ProtoMessage() {}
 
 func (x *MetricsResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_driverpb_driver_proto_msgTypes[16]
+	mi := &file_driverpb_driver_proto_msgTypes[17]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -870,7 +914,7 @@ func (x *MetricsResponse) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use MetricsResponse.ProtoReflect.Descriptor instead.
 func (*MetricsResponse) Descriptor() ([]byte, []int) {
-	return file_driverpb_driver_proto_rawDescGZIP(), []int{16}
+	return file_driverpb_driver_proto_rawDescGZIP(), []int{17}
 }
 
 func (x *MetricsResponse) GetCpuPercent() float64 {
@@ -912,7 +956,9 @@ const file_driverpb_driver_proto_rawDesc = "" +
 	"\x01x\x18\x01 \x01(\x05R\x01x\x12\f\n" +
 	"\x01y\x18\x02 \x01(\x05R\x01y\"\x1c\n" +
 	"\x04Text\x12\x14\n" +
-	"\x05value\x18\x01 \x01(\tR\x05value\" \n" +
+	"\x05value\x18\x01 \x01(\tR\x05value\";\n" +
+	"\x10EraseTextRequest\x12'\n" +
+	"\x0fcharacter_count\x18\x01 \x01(\x05R\x0echaracterCount\" \n" +
 	"\bSelector\x12\x14\n" +
 	"\x05value\x18\x01 \x01(\tR\x05value\"G\n" +
 	"\x05Image\x12\x10\n" +
@@ -957,13 +1003,14 @@ const file_driverpb_driver_proto_rawDesc = "" +
 	"cpuPercent\x12\x1d\n" +
 	"\n" +
 	"heap_bytes\x18\x02 \x01(\x03R\theapBytes\x12,\n" +
-	"\x12total_memory_bytes\x18\x03 \x01(\x03R\x10totalMemoryBytes2\xff\b\n" +
+	"\x12total_memory_bytes\x18\x03 \x01(\x03R\x10totalMemoryBytes2\xd1\t\n" +
 	"\x06Driver\x12J\n" +
 	"\x06Launch\x12#.sanderling.driver.v1.LaunchRequest\x1a\x1b.sanderling.driver.v1.Empty\x12E\n" +
 	"\tTerminate\x12\x1b.sanderling.driver.v1.Empty\x1a\x1b.sanderling.driver.v1.Empty\x12?\n" +
 	"\x03Tap\x12\x1b.sanderling.driver.v1.Point\x1a\x1b.sanderling.driver.v1.Empty\x12J\n" +
 	"\vTapSelector\x12\x1e.sanderling.driver.v1.Selector\x1a\x1b.sanderling.driver.v1.Empty\x12D\n" +
-	"\tInputText\x12\x1a.sanderling.driver.v1.Text\x1a\x1b.sanderling.driver.v1.Empty\x12H\n" +
+	"\tInputText\x12\x1a.sanderling.driver.v1.Text\x1a\x1b.sanderling.driver.v1.Empty\x12P\n" +
+	"\tEraseText\x12&.sanderling.driver.v1.EraseTextRequest\x1a\x1b.sanderling.driver.v1.Empty\x12H\n" +
 	"\x05Swipe\x12\".sanderling.driver.v1.SwipeRequest\x1a\x1b.sanderling.driver.v1.Empty\x12N\n" +
 	"\bPressKey\x12%.sanderling.driver.v1.PressKeyRequest\x1a\x1b.sanderling.driver.v1.Empty\x12E\n" +
 	"\tLongPress\x12\x1b.sanderling.driver.v1.Point\x1a\x1b.sanderling.driver.v1.Empty\x12F\n" +
@@ -990,66 +1037,69 @@ func file_driverpb_driver_proto_rawDescGZIP() []byte {
 	return file_driverpb_driver_proto_rawDescData
 }
 
-var file_driverpb_driver_proto_msgTypes = make([]protoimpl.MessageInfo, 18)
+var file_driverpb_driver_proto_msgTypes = make([]protoimpl.MessageInfo, 19)
 var file_driverpb_driver_proto_goTypes = []any{
 	(*Empty)(nil),             // 0: sanderling.driver.v1.Empty
 	(*LaunchRequest)(nil),     // 1: sanderling.driver.v1.LaunchRequest
 	(*Point)(nil),             // 2: sanderling.driver.v1.Point
 	(*Text)(nil),              // 3: sanderling.driver.v1.Text
-	(*Selector)(nil),          // 4: sanderling.driver.v1.Selector
+	(*EraseTextRequest)(nil),  // 4: sanderling.driver.v1.EraseTextRequest
-	(*Image)(nil),             // 5: sanderling.driver.v1.Image
+	(*Selector)(nil),          // 5: sanderling.driver.v1.Selector
-	(*HierarchyJSON)(nil),     // 6: sanderling.driver.v1.HierarchyJSON
+	(*Image)(nil),             // 6: sanderling.driver.v1.Image
-	(*SnapshotResponse)(nil),  // 7: sanderling.driver.v1.SnapshotResponse
+	(*HierarchyJSON)(nil),     // 7: sanderling.driver.v1.HierarchyJSON
-	(*Duration)(nil),          // 8: sanderling.driver.v1.Duration
+	(*SnapshotResponse)(nil),  // 8: sanderling.driver.v1.SnapshotResponse
-	(*HealthStatus)(nil),      // 9: sanderling.driver.v1.HealthStatus
+	(*Duration)(nil),          // 9: sanderling.driver.v1.Duration
-	(*SwipeRequest)(nil),      // 10: sanderling.driver.v1.SwipeRequest
+	(*HealthStatus)(nil),      // 10: sanderling.driver.v1.HealthStatus
-	(*PressKeyRequest)(nil),   // 11: sanderling.driver.v1.PressKeyRequest
+	(*SwipeRequest)(nil),      // 11: sanderling.driver.v1.SwipeRequest
-	(*RecentLogsRequest)(nil), // 12: sanderling.driver.v1.RecentLogsRequest
+	(*PressKeyRequest)(nil),   // 12: sanderling.driver.v1.PressKeyRequest
-	(*LogEntries)(nil),        // 13: sanderling.driver.v1.LogEntries
+	(*RecentLogsRequest)(nil), // 13: sanderling.driver.v1.RecentLogsRequest
-	(*LogEntry)(nil),          // 14: sanderling.driver.v1.LogEntry
+	(*LogEntries)(nil),        // 14: sanderling.driver.v1.LogEntries
-	(*MetricsRequest)(nil),    // 15: sanderling.driver.v1.MetricsRequest
+	(*LogEntry)(nil),          // 15: sanderling.driver.v1.LogEntry
-	(*MetricsResponse)(nil),   // 16: sanderling.driver.v1.MetricsResponse
+	(*MetricsRequest)(nil),    // 16: sanderling.driver.v1.MetricsRequest
-	nil,                       // 17: sanderling.driver.v1.LaunchRequest.EnvEntry
+	(*MetricsResponse)(nil),   // 17: sanderling.driver.v1.MetricsResponse
+	nil,                       // 18: sanderling.driver.v1.LaunchRequest.EnvEntry
 }
 var file_driverpb_driver_proto_depIdxs = []int32{
-	17, // 0: sanderling.driver.v1.LaunchRequest.env:type_name -> sanderling.driver.v1.LaunchRequest.EnvEntry
+	18, // 0: sanderling.driver.v1.LaunchRequest.env:type_name -> sanderling.driver.v1.LaunchRequest.EnvEntry
-	6,  // 1: sanderling.driver.v1.SnapshotResponse.hierarchy:type_name -> sanderling.driver.v1.HierarchyJSON
+	7,  // 1: sanderling.driver.v1.SnapshotResponse.hierarchy:type_name -> sanderling.driver.v1.HierarchyJSON
-	5,  // 2: sanderling.driver.v1.SnapshotResponse.screenshot:type_name -> sanderling.driver.v1.Image
+	6,  // 2: sanderling.driver.v1.SnapshotResponse.screenshot:type_name -> sanderling.driver.v1.Image
 	2,  // 3: sanderling.driver.v1.SwipeRequest.from:type_name -> sanderling.driver.v1.Point
 	2,  // 4: sanderling.driver.v1.SwipeRequest.to:type_name -> sanderling.driver.v1.Point
-	14, // 5: sanderling.driver.v1.LogEntries.entries:type_name -> sanderling.driver.v1.LogEntry
+	15, // 5: sanderling.driver.v1.LogEntries.entries:type_name -> sanderling.driver.v1.LogEntry
 	1,  // 6: sanderling.driver.v1.Driver.Launch:input_type -> sanderling.driver.v1.LaunchRequest
 	0,  // 7: sanderling.driver.v1.Driver.Terminate:input_type -> sanderling.driver.v1.Empty
 	2,  // 8: sanderling.driver.v1.Driver.Tap:input_type -> sanderling.driver.v1.Point
-	4,  // 9: sanderling.driver.v1.Driver.TapSelector:input_type -> sanderling.driver.v1.Selector
+	5,  // 9: sanderling.driver.v1.Driver.TapSelector:input_type -> sanderling.driver.v1.Selector
 	3,  // 10: sanderling.driver.v1.Driver.InputText:input_type -> sanderling.driver.v1.Text
-	10, // 11: sanderling.driver.v1.Driver.Swipe:input_type -> sanderling.driver.v1.SwipeRequest
+	4,  // 11: sanderling.driver.v1.Driver.EraseText:input_type -> sanderling.driver.v1.EraseTextRequest
-	11, // 12: sanderling.driver.v1.Driver.PressKey:input_type -> sanderling.driver.v1.PressKeyRequest
+	11, // 12: sanderling.driver.v1.Driver.Swipe:input_type -> sanderling.driver.v1.SwipeRequest
-	2,  // 13: sanderling.driver.v1.Driver.LongPress:input_type -> sanderling.driver.v1.Point
+	12, // 13: sanderling.driver.v1.Driver.PressKey:input_type -> sanderling.driver.v1.PressKeyRequest
-	0,  // 14: sanderling.driver.v1.Driver.Screenshot:input_type -> sanderling.driver.v1.Empty
+	2,  // 14: sanderling.driver.v1.Driver.LongPress:input_type -> sanderling.driver.v1.Point
-	0,  // 15: sanderling.driver.v1.Driver.Hierarchy:input_type -> sanderling.driver.v1.Empty
+	0,  // 15: sanderling.driver.v1.Driver.Screenshot:input_type -> sanderling.driver.v1.Empty
-	0,  // 16: sanderling.driver.v1.Driver.Snapshot:input_type -> sanderling.driver.v1.Empty
+	0,  // 16: sanderling.driver.v1.Driver.Hierarchy:input_type -> sanderling.driver.v1.Empty
-	12, // 17: sanderling.driver.v1.Driver.RecentLogs:input_type -> sanderling.driver.v1.RecentLogsRequest
+	0,  // 17: sanderling.driver.v1.Driver.Snapshot:input_type -> sanderling.driver.v1.Empty
-	8,  // 18: sanderling.driver.v1.Driver.WaitForIdle:input_type -> sanderling.driver.v1.Duration
+	13, // 18: sanderling.driver.v1.Driver.RecentLogs:input_type -> sanderling.driver.v1.RecentLogsRequest
-	0,  // 19: sanderling.driver.v1.Driver.Health:input_type -> sanderling.driver.v1.Empty
+	9,  // 19: sanderling.driver.v1.Driver.WaitForIdle:input_type -> sanderling.driver.v1.Duration
-	15, // 20: sanderling.driver.v1.Driver.Metrics:input_type -> sanderling.driver.v1.MetricsRequest
+	0,  // 20: sanderling.driver.v1.Driver.Health:input_type -> sanderling.driver.v1.Empty
-	0,  // 21: sanderling.driver.v1.Driver.Launch:output_type -> sanderling.driver.v1.Empty
+	16, // 21: sanderling.driver.v1.Driver.Metrics:input_type -> sanderling.driver.v1.MetricsRequest
-	0,  // 22: sanderling.driver.v1.Driver.Terminate:output_type -> sanderling.driver.v1.Empty
+	0,  // 22: sanderling.driver.v1.Driver.Launch:output_type -> sanderling.driver.v1.Empty
-	0,  // 23: sanderling.driver.v1.Driver.Tap:output_type -> sanderling.driver.v1.Empty
+	0,  // 23: sanderling.driver.v1.Driver.Terminate:output_type -> sanderling.driver.v1.Empty
-	0,  // 24: sanderling.driver.v1.Driver.TapSelector:output_type -> sanderling.driver.v1.Empty
+	0,  // 24: sanderling.driver.v1.Driver.Tap:output_type -> sanderling.driver.v1.Empty
-	0,  // 25: sanderling.driver.v1.Driver.InputText:output_type -> sanderling.driver.v1.Empty
+	0,  // 25: sanderling.driver.v1.Driver.TapSelector:output_type -> sanderling.driver.v1.Empty
-	0,  // 26: sanderling.driver.v1.Driver.Swipe:output_type -> sanderling.driver.v1.Empty
+	0,  // 26: sanderling.driver.v1.Driver.InputText:output_type -> sanderling.driver.v1.Empty
-	0,  // 27: sanderling.driver.v1.Driver.PressKey:output_type -> sanderling.driver.v1.Empty
+	0,  // 27: sanderling.driver.v1.Driver.EraseText:output_type -> sanderling.driver.v1.Empty
-	0,  // 28: sanderling.driver.v1.Driver.LongPress:output_type -> sanderling.driver.v1.Empty
+	0,  // 28: sanderling.driver.v1.Driver.Swipe:output_type -> sanderling.driver.v1.Empty
-	5,  // 29: sanderling.driver.v1.Driver.Screenshot:output_type -> sanderling.driver.v1.Image
+	0,  // 29: sanderling.driver.v1.Driver.PressKey:output_type -> sanderling.driver.v1.Empty
-	6,  // 30: sanderling.driver.v1.Driver.Hierarchy:output_type -> sanderling.driver.v1.HierarchyJSON
+	0,  // 30: sanderling.driver.v1.Driver.LongPress:output_type -> sanderling.driver.v1.Empty
-	7,  // 31: sanderling.driver.v1.Driver.Snapshot:output_type -> sanderling.driver.v1.SnapshotResponse
+	6,  // 31: sanderling.driver.v1.Driver.Screenshot:output_type -> sanderling.driver.v1.Image
-	13, // 32: sanderling.driver.v1.Driver.RecentLogs:output_type -> sanderling.driver.v1.LogEntries
+	7,  // 32: sanderling.driver.v1.Driver.Hierarchy:output_type -> sanderling.driver.v1.HierarchyJSON
-	0,  // 33: sanderling.driver.v1.Driver.WaitForIdle:output_type -> sanderling.driver.v1.Empty
+	8,  // 33: sanderling.driver.v1.Driver.Snapshot:output_type -> sanderling.driver.v1.SnapshotResponse
-	9,  // 34: sanderling.driver.v1.Driver.Health:output_type -> sanderling.driver.v1.HealthStatus
+	14, // 34: sanderling.driver.v1.Driver.RecentLogs:output_type -> sanderling.driver.v1.LogEntries
-	16, // 35: sanderling.driver.v1.Driver.Metrics:output_type -> sanderling.driver.v1.MetricsResponse
+	0,  // 35: sanderling.driver.v1.Driver.WaitForIdle:output_type -> sanderling.driver.v1.Empty
-	21, // [21:36] is the sub-list for method output_type
+	10, // 36: sanderling.driver.v1.Driver.Health:output_type -> sanderling.driver.v1.HealthStatus
-	6,  // [6:21] is the sub-list for method input_type
+	17, // 37: sanderling.driver.v1.Driver.Metrics:output_type -> sanderling.driver.v1.MetricsResponse
+	22, // [22:38] is the sub-list for method output_type
+	6,  // [6:22] is the sub-list for method input_type
 	6,  // [6:6] is the sub-list for extension type_name
 	6,  // [6:6] is the sub-list for extension extendee
 	0,  // [0:6] is the sub-list for field type_name
@@ -1066,7 +1116,7 @@ func file_driverpb_driver_proto_init() {
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: unsafe.Slice(unsafe.StringData(file_driverpb_driver_proto_rawDesc), len(file_driverpb_driver_proto_rawDesc)),
 			NumEnums:      0,
-			NumMessages:   18,
+			NumMessages:   19,
 			NumExtensions: 0,
 			NumServices:   1,
 		},

proto/driverpb/driver.proto

@@ -13,6 +13,9 @@ service Driver {
   rpc Tap(Point) returns (Empty);
   rpc TapSelector(Selector) returns (Empty);
   rpc InputText(Text) returns (Empty);
+  // EraseText deletes characters from the focused field so InputText can
+  // replace existing content instead of appending to it.
+  rpc EraseText(EraseTextRequest) returns (Empty);
   rpc Swipe(SwipeRequest) returns (Empty);
   rpc PressKey(PressKeyRequest) returns (Empty);
   rpc LongPress(Point) returns (Empty);
@@ -47,6 +50,10 @@ message Text {
   string value = 1;
 }
 
+message EraseTextRequest {
+  int32 character_count = 1;
+}
+
 message Selector {
   string value = 1;
 }

proto/driverpb/driver_grpc.pb.go

@@ -24,6 +24,7 @@ const (
 	Driver_Tap_FullMethodName         = "/sanderling.driver.v1.Driver/Tap"
 	Driver_TapSelector_FullMethodName = "/sanderling.driver.v1.Driver/TapSelector"
 	Driver_InputText_FullMethodName   = "/sanderling.driver.v1.Driver/InputText"
+	Driver_EraseText_FullMethodName   = "/sanderling.driver.v1.Driver/EraseText"
 	Driver_Swipe_FullMethodName       = "/sanderling.driver.v1.Driver/Swipe"
 	Driver_PressKey_FullMethodName    = "/sanderling.driver.v1.Driver/PressKey"
 	Driver_LongPress_FullMethodName   = "/sanderling.driver.v1.Driver/LongPress"
@@ -45,6 +46,9 @@ type DriverClient interface {
 	Tap(ctx context.Context, in *Point, opts ...grpc.CallOption) (*Empty, error)
 	TapSelector(ctx context.Context, in *Selector, opts ...grpc.CallOption) (*Empty, error)
 	InputText(ctx context.Context, in *Text, opts ...grpc.CallOption) (*Empty, error)
+	// EraseText deletes characters from the focused field so InputText can
+	// replace existing content instead of appending to it.
+	EraseText(ctx context.Context, in *EraseTextRequest, opts ...grpc.CallOption) (*Empty, error)
 	Swipe(ctx context.Context, in *SwipeRequest, opts ...grpc.CallOption) (*Empty, error)
 	PressKey(ctx context.Context, in *PressKeyRequest, opts ...grpc.CallOption) (*Empty, error)
 	LongPress(ctx context.Context, in *Point, opts ...grpc.CallOption) (*Empty, error)
@@ -118,6 +122,16 @@ func (c *driverClient) InputText(ctx context.Context, in *Text, opts ...grpc.Cal
 	return out, nil
 }
 
+func (c *driverClient) EraseText(ctx context.Context, in *EraseTextRequest, opts ...grpc.CallOption) (*Empty, error) {
+	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
+	out := new(Empty)
+	err := c.cc.Invoke(ctx, Driver_EraseText_FullMethodName, in, out, cOpts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
 func (c *driverClient) Swipe(ctx context.Context, in *SwipeRequest, opts ...grpc.CallOption) (*Empty, error) {
 	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
 	out := new(Empty)
@@ -227,6 +241,9 @@ type DriverServer interface {
 	Tap(context.Context, *Point) (*Empty, error)
 	TapSelector(context.Context, *Selector) (*Empty, error)
 	InputText(context.Context, *Text) (*Empty, error)
+	// EraseText deletes characters from the focused field so InputText can
+	// replace existing content instead of appending to it.
+	EraseText(context.Context, *EraseTextRequest) (*Empty, error)
 	Swipe(context.Context, *SwipeRequest) (*Empty, error)
 	PressKey(context.Context, *PressKeyRequest) (*Empty, error)
 	LongPress(context.Context, *Point) (*Empty, error)
@@ -265,6 +282,9 @@ func (UnimplementedDriverServer) TapSelector(context.Context, *Selector) (*Empty
 func (UnimplementedDriverServer) InputText(context.Context, *Text) (*Empty, error) {
 	return nil, status.Error(codes.Unimplemented, "method InputText not implemented")
 }
+func (UnimplementedDriverServer) EraseText(context.Context, *EraseTextRequest) (*Empty, error) {
+	return nil, status.Error(codes.Unimplemented, "method EraseText not implemented")
+}
 func (UnimplementedDriverServer) Swipe(context.Context, *SwipeRequest) (*Empty, error) {
 	return nil, status.Error(codes.Unimplemented, "method Swipe not implemented")
 }
@@ -406,6 +426,24 @@ func _Driver_InputText_Handler(srv interface{}, ctx context.Context, dec func(in
 	return interceptor(ctx, in, info, handler)
 }
 
+func _Driver_EraseText_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(EraseTextRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(DriverServer).EraseText(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: Driver_EraseText_FullMethodName,
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(DriverServer).EraseText(ctx, req.(*EraseTextRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
 func _Driver_Swipe_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
 	in := new(SwipeRequest)
 	if err := dec(in); err != nil {
@@ -613,6 +651,10 @@ var Driver_ServiceDesc = grpc.ServiceDesc{
 			MethodName: "InputText",
 			Handler:    _Driver_InputText_Handler,
 		},
+		{
+			MethodName: "EraseText",
+			Handler:    _Driver_EraseText_Handler,
+		},
 		{
 			MethodName: "Swipe",
 			Handler:    _Driver_Swipe_Handler,

proto/driverpb/driver_test.go

@@ -18,6 +18,7 @@ func TestDriverServiceDescriptor(t *testing.T) {
 		"Tap":         true,
 		"TapSelector": true,
 		"InputText":   true,
+		"EraseText":   true,
 		"Swipe":       true,
 		"PressKey":    true,
 		"LongPress":   true,