Add Ctrl-U command and a query behavior.

force insert `.`

README.md

@@ -101,6 +101,7 @@ jid < file.json
 |:-----------|:----------|
 |`TAB` / `CTRL` + `I` |Show available items and choice them|
 |`CTRL` + `W` |Delete from the cursor to the start of the word|
+|`CTRL` + `U` |Delete whole query|
 |`CTRL` + `F` / Right Arrow (:arrow_right:)|Move cursor a character to the right|
 |`CTRL` + `B` / Left Arrow (:arrow_left:)|Move cursor a character to the left|
 |`CTRL` + `A`|To the first character of the 'Filter'|

cmd/jid/jid.go

@@ -73,9 +73,12 @@ $ jid < file.json
 TAB / CTRL-I
   Show available items and choice them
 
-CTRL-W 
+CTRL-W
   Delete from the cursor to the start of the word
 
+CTRL-U
+  Delete whole query
+
 CTRL-F / Right Arrow
   Move cursor a character to the right
 

engine.go

@@ -91,6 +91,12 @@ func (e *Engine) Run() EngineResultInterface {
 	var contents []string
 
 	for {
+
+		if e.query.StringGet() == "" {
+			e.query.StringSet(".")
+			e.cursorOffsetX = len(e.query.StringGet())
+		}
+
 		contents = e.getContents()
 		e.setCandidateData()
 		e.queryConfirm = false
@@ -130,6 +136,8 @@ func (e *Engine) Run() EngineResultInterface {
 				e.scrollToBelow()
 			case termbox.KeyCtrlL:
 				e.toggleKeymode()
+			case termbox.KeyCtrlU:
+				e.deleteLineQuery()
 			case termbox.KeyCtrlW:
 				e.deleteWordBackward()
 			case termbox.KeyEsc:
@@ -196,6 +204,12 @@ func (e *Engine) deleteChar() {
 		e.cursorOffsetX -= 1
 	}
 }
+
+func (e *Engine) deleteLineQuery() {
+	_ = e.query.StringSet("")
+	e.cursorOffsetX = 0
+}
+
 func (e *Engine) scrollToBelow() {
 	e.contentOffset++
 }

engine_test.go

@@ -68,6 +68,16 @@ func TestDeleteWordBackward(t *testing.T) {
 	assert.Equal(5, e.cursorOffsetX)
 }
 
+func TestDeleteLineQuery(t *testing.T) {
+	var assert = assert.New(t)
+	e := getEngine(`{"name":"go"}`, "")
+
+	e.query.StringSet(".name")
+	e.deleteLineQuery()
+	assert.Equal("", e.query.StringGet())
+	assert.Equal(0, e.cursorOffsetX)
+}
+
 func TestScrollToAbove(t *testing.T) {
 	var assert = assert.New(t)
 	e := getEngine(`{"named":"go","NameTest":[1,2,3]}`, "")