put most stuff into package

rofi/rofi.go

@@ -0,0 +1,114 @@
+package rofi
+
+import (
+	"bufio"
+	"encoding/json"
+	"fmt"
+	"os"
+)
+
+var (
+	// InputChangeCallback called when the user types somthing in
+	InputChangeCallback func(Input)
+
+	// CustomKeyCallback idk
+	CustomKeyCallback func(Input)
+
+	// ActivateEntryCallback when the user press enter on an entry
+	ActivateEntryCallback func(Input)
+
+	// SelectEntryCallback when a user selects a entry via arrow keys
+	SelectEntryCallback func(Input)
+
+	// DeleteEntryCallback idk
+	DeleteEntryCallback func(Input)
+
+	// CustomInputCallback idk
+	CustomInputCallback func(Input)
+)
+
+// Output json to send to rofi
+type Output struct {
+	Message     string `json:"message,omitempty"`      // Sets rofi message, hides it if empty or null
+	Overlay     string `json:"overlay,omitempty"`      // Shows overlay with text, hides it if empty or null
+	Prompt      string `json:"prompt,omitempty"`       // sets prompt text
+	Input       string `json:"input,omitempty"`        // sets input text, to clear use empty string
+	InputAction string `json:"input action,omitempty"` // "send" or "filter"
+	EventFormat string `json:"event format,omitempty"` // event format used to send to input
+	Lines       []Line `json:"lines"`                  // a list of sting or json object to set rofi list content
+}
+
+// Line a single entry
+type Line struct {
+	Text      string `json:"text,required"`
+	Urgent    bool   `json:"urgent,omitempty"`
+	Highlight bool   `json:"highlight,omitempty"`
+	Markup    bool   `json:"markup,omitempty"`
+	Icon      string `json:"icon,omitempty"`
+}
+
+// Input send when the user types something
+type Input struct {
+	Name  string `json:"name"`
+	Value string `json:"value"`
+}
+
+// ConvertStringsToLine converts a string array to Line array with all flags set to false
+func ConvertStringsToLine(strings []string) []Line {
+	lines := make([]Line, len(strings))
+	for i, v := range strings {
+		lines[i] = Line{v, false, false, false, ""}
+	}
+	return lines
+}
+
+// SendOutput sends output to rofi
+func SendOutput(output Output) {
+	res, _ := json.Marshal(output)
+	fmt.Printf("%s\n", res)
+}
+
+// NewOutput helper for a new empty outout
+func NewOutput() Output {
+	return Output{"", "", "", "", "", "", []Line{}}
+}
+
+// InputLoop blocking loop to handle incomming json
+func InputLoop() {
+	scanner := bufio.NewScanner(os.Stdin)
+	for scanner.Scan() {
+		var input Input
+		bytes := scanner.Bytes()
+		json.Unmarshal(bytes, &input)
+		handleInput(input)
+	}
+}
+
+func handleInput(input Input) {
+	switch input.Name {
+	case "input change":
+		if InputChangeCallback != nil {
+			InputChangeCallback(input)
+		}
+	case "custom key":
+		if CustomKeyCallback != nil {
+			CustomKeyCallback(input)
+		}
+	case "active entry":
+		if ActivateEntryCallback != nil {
+			ActivateEntryCallback(input)
+		}
+	case "select entry":
+		if SelectEntryCallback != nil {
+			SelectEntryCallback(input)
+		}
+	case "delete entry":
+		if DeleteEntryCallback != nil {
+			DeleteEntryCallback(input)
+		}
+	case "exec custom input":
+		if CustomInputCallback != nil {
+			CustomInputCallback(input)
+		}
+	}
+}