Add infobar

cmd/micro/info/gutter.go

@@ -0,0 +1,18 @@
+package info
+
+// A GutterMessage is a message displayed on the side of the editor
+type GutterMessage struct {
+	lineNum int
+	msg     string
+	kind    int
+}
+
+// These are the different types of messages
+const (
+	// GutterInfo represents a simple info message
+	GutterInfo = iota
+	// GutterWarning represents a compiler warning
+	GutterWarning
+	// GutterError represents a compiler error
+	GutterError
+)

cmd/micro/info/history.go

@@ -0,0 +1,61 @@
+package info
+
+import (
+	"encoding/gob"
+	"os"
+
+	"github.com/zyedidia/micro/cmd/micro/config"
+)
+
+// LoadHistory attempts to load user history from configDir/buffers/history
+// into the history map
+// The savehistory option must be on
+func (i *Bar) LoadHistory() {
+	if config.GetGlobalOption("savehistory").(bool) {
+		file, err := os.Open(config.ConfigDir + "/buffers/history")
+		defer file.Close()
+		var decodedMap map[string][]string
+		if err == nil {
+			decoder := gob.NewDecoder(file)
+			err = decoder.Decode(&decodedMap)
+
+			if err != nil {
+				i.Error("Error loading history:", err)
+				return
+			}
+		}
+
+		if decodedMap != nil {
+			i.History = decodedMap
+		} else {
+			i.History = make(map[string][]string)
+		}
+	} else {
+		i.History = make(map[string][]string)
+	}
+}
+
+// SaveHistory saves the user's command history to configDir/buffers/history
+// only if the savehistory option is on
+func (i *Bar) SaveHistory() {
+	if config.GetGlobalOption("savehistory").(bool) {
+		// Don't save history past 100
+		for k, v := range i.History {
+			if len(v) > 100 {
+				i.History[k] = v[len(i.History[k])-100:]
+			}
+		}
+
+		file, err := os.Create(config.ConfigDir + "/buffers/history")
+		defer file.Close()
+		if err == nil {
+			encoder := gob.NewEncoder(file)
+
+			err = encoder.Encode(i.History)
+			if err != nil {
+				i.Error("Error saving history:", err)
+				return
+			}
+		}
+	}
+}

cmd/micro/info/infobar.go

@@ -0,0 +1,66 @@
+package info
+
+import (
+	"fmt"
+
+	"github.com/zyedidia/micro/cmd/micro/buffer"
+)
+
+var MainBar *Bar
+
+func InitInfoBar() {
+	MainBar = NewBar()
+}
+
+// The Bar displays messages and other info at the bottom of the screen.
+// It is respresented as a buffer and a message with a style.
+type Bar struct {
+	*buffer.Buffer
+
+	HasPrompt  bool
+	HasMessage bool
+	HasError   bool
+
+	Msg string
+
+	// This map stores the history for all the different kinds of uses Prompt has
+	// It's a map of history type -> history array
+	History    map[string][]string
+	HistoryNum int
+
+	// Is the current message a message from the gutter
+	GutterMessage bool
+}
+
+func NewBar() *Bar {
+	ib := new(Bar)
+	ib.History = make(map[string][]string)
+
+	ib.Buffer = buffer.NewBufferFromString("", "infobar", buffer.BTScratch)
+
+	return ib
+}
+
+// Message sends a message to the user
+func (i *Bar) Message(msg ...interface{}) {
+	// only display a new message if there isn't an active prompt
+	// this is to prevent overwriting an existing prompt to the user
+	if i.HasPrompt == false {
+		displayMessage := fmt.Sprint(msg...)
+		// if there is no active prompt then style and display the message as normal
+		i.Msg = displayMessage
+		i.HasMessage = true
+	}
+}
+
+// Error sends an error message to the user
+func (i *Bar) Error(msg ...interface{}) {
+	// only display a new message if there isn't an active prompt
+	// this is to prevent overwriting an existing prompt to the user
+	if i.HasPrompt == false {
+		// if there is no active prompt then style and display the message as normal
+		i.Msg = fmt.Sprint(msg...)
+		i.HasError = true
+	}
+	// TODO: add to log?
+}