493 lines
15 KiB
Go
493 lines
15 KiB
Go
package main
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import (
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"fmt"
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"github.com/nsf/termbox-go"
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"gogs.bullercodeworks.com/brian/termbox-util"
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"strings"
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)
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type ViewPort struct {
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bytes_per_row int
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number_of_rows int
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first_row int
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}
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type BrowserScreen struct {
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db *BoltDB
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cursor Cursor
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view_port ViewPort
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queued_command string
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current_path []string
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current_type int
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message string
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mode BrowserMode
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input_modal *InputModal
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}
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type BrowserMode int
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const (
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MODE_BROWSE = iota
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MODE_CHANGE_VAL
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MODE_INSERT_BUCKET
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MODE_INSERT_PAIR
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)
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type InputModal struct {
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x int
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y int
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width int
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height int
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text string
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curr_val string
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current_cursor int
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}
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type BoltType int
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const (
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TYPE_BUCKET = iota
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TYPE_PAIR
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)
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func (screen *BrowserScreen) handleKeyEvent(event termbox.Event) int {
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if screen.mode == MODE_BROWSE {
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return screen.handleBrowseKeyEvent(event)
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} else if screen.mode == MODE_CHANGE_VAL {
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return screen.handleInputKeyEvent(event)
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} else if screen.mode == MODE_INSERT_BUCKET {
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return screen.handleInsertBucketKeyEvent(event)
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}
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return BROWSER_SCREEN_INDEX
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}
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func (screen *BrowserScreen) handleBrowseKeyEvent(event termbox.Event) int {
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if event.Ch == '?' {
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// About
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return ABOUT_SCREEN_INDEX
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} else if event.Ch == 'q' || event.Key == termbox.KeyEsc || event.Key == termbox.KeyCtrlC {
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// Quit
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return EXIT_SCREEN_INDEX
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} else if event.Ch == 'g' {
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// Jump to Beginning
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screen.current_path = screen.db.getNextVisiblePath(nil)
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} else if event.Ch == 'G' {
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// Jump to End
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screen.current_path = screen.db.getPrevVisiblePath(nil)
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} else if event.Key == termbox.KeyCtrlF {
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// Jump forward half a screen
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_, h := termbox.Size()
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half := h / 2
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screen.jumpCursorDown(half)
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} else if event.Key == termbox.KeyCtrlB {
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_, h := termbox.Size()
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half := h / 2
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screen.jumpCursorUp(half)
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} else if event.Ch == 'j' || event.Key == termbox.KeyArrowDown {
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screen.moveCursorDown()
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} else if event.Ch == 'k' || event.Key == termbox.KeyArrowUp {
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screen.moveCursorUp()
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} else if event.Ch == 'p' {
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screen.insertPair()
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} else if event.Ch == 'b' {
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screen.insertBucket()
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} else if event.Ch == 'e' {
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_, p, _ := screen.db.getGenericFromPath(screen.current_path)
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if p != nil {
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screen.createEditModal()
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}
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screen.message = "Cannot edit a bucket yet"
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} else if event.Key == termbox.KeyEnter {
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b, p, _ := screen.db.getGenericFromPath(screen.current_path)
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if b != nil {
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toggleOpenBucket(screen.current_path)
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} else if p != nil {
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screen.createEditModal()
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}
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} else if event.Ch == 'l' || event.Key == termbox.KeyArrowRight {
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b, p, _ := screen.db.getGenericFromPath(screen.current_path)
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// Select the current item
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if b != nil {
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toggleOpenBucket(screen.current_path)
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} else if p != nil {
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screen.createEditModal()
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} else {
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screen.message = "Not sure what to do here..."
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}
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} else if event.Ch == 'h' || event.Key == termbox.KeyArrowLeft {
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// If we are _on_ a bucket that's open, close it
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b, _, e := screen.db.getGenericFromPath(screen.current_path)
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if e == nil && b != nil && b.expanded {
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closeBucket(screen.current_path)
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} else {
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if len(screen.current_path) > 1 {
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parent_bucket, err := screen.db.getBucketFromPath(screen.current_path[:len(screen.current_path)-1])
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if err == nil {
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closeBucket(parent_bucket.path)
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// Figure out how far up we need to move the cursor
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screen.current_path = parent_bucket.path
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}
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} else {
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closeBucket(screen.current_path)
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}
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}
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} else if event.Ch == 'D' {
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deleteKey(screen.current_path)
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screen.current_path = screen.current_path[:len(screen.current_path)-1]
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}
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return BROWSER_SCREEN_INDEX
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}
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func (screen *BrowserScreen) handleInputKeyEvent(event termbox.Event) int {
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if event.Key == termbox.KeyEsc {
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screen.mode = MODE_BROWSE
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} else if event.Key == termbox.KeyEnter {
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b, p, e := screen.db.getGenericFromPath(screen.current_path)
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if e == nil {
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if b != nil {
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screen.message = "Cannot edit bucket"
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} else if p != nil {
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if err := updatePairValue(screen.current_path, screen.input_modal.curr_val); err != nil {
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screen.message = fmt.Sprint(err)
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} else {
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p.val = screen.input_modal.curr_val
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}
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screen.mode = MODE_BROWSE
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}
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}
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} else if event.Key == termbox.KeyBackspace || event.Key == termbox.KeyBackspace2 || event.Key == termbox.KeyDelete {
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screen.input_modal.curr_val = screen.input_modal.curr_val[:len(screen.input_modal.curr_val)-1]
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} else {
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screen.input_modal.curr_val += string(event.Ch)
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}
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return BROWSER_SCREEN_INDEX
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}
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func (screen *BrowserScreen) handleInsertBucketKeyEvent(event termbox.Event) int {
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if event.Key == termbox.KeyEsc {
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screen.mode = MODE_BROWSE
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} else if event.Key == termbox.KeyEnter {
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b, p, e := screen.db.getGenericFromPath(screen.current_path)
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if e == nil {
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if b != nil {
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if err := insertBucket(screen.current_path, screen.input_modal.curr_val); err != nil {
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screen.message = fmt.Sprint(err)
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} else {
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if b.parent != nil {
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//b.parent.buckets = append(b.parent.buckets, BoltBucket{name: screen.input_modal.curr_val
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} else {
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//screen.db.buckets = append(screen.db.buckets, BoltBucket{
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}
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}
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screen.mode = MODE_BROWSE
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} else if p != nil {
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if err := updatePairValue(screen.current_path, screen.input_modal.curr_val); err != nil {
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screen.message = fmt.Sprint(err)
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} else {
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p.val = screen.input_modal.curr_val
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}
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screen.mode = MODE_BROWSE
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}
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}
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} else if event.Key == termbox.KeyBackspace || event.Key == termbox.KeyBackspace2 || event.Key == termbox.KeyDelete {
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screen.input_modal.curr_val = screen.input_modal.curr_val[:len(screen.input_modal.curr_val)-1]
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} else {
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screen.input_modal.curr_val += string(event.Ch)
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}
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return BROWSER_SCREEN_INDEX
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}
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func (screen *BrowserScreen) jumpCursorUp(distance int) bool {
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// Jump up 'distance' lines
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vis_paths, err := screen.db.buildVisiblePathSlice(nil)
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if err == nil {
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find_path := strings.Join(screen.current_path, "/")
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start_jump := false
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for i := range vis_paths {
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if vis_paths[len(vis_paths)-1-i] == find_path {
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start_jump = true
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}
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if start_jump {
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distance -= 1
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if distance == 0 {
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screen.current_path = strings.Split(vis_paths[len(vis_paths)-1-i], "/")
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break
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}
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}
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}
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if strings.Join(screen.current_path, "/") == find_path {
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screen.current_path = screen.db.getNextVisiblePath(nil)
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}
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}
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return true
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}
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func (screen *BrowserScreen) jumpCursorDown(distance int) bool {
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vis_paths, err := screen.db.buildVisiblePathSlice(nil)
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if err == nil {
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find_path := strings.Join(screen.current_path, "/")
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start_jump := false
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for i := range vis_paths {
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if vis_paths[i] == find_path {
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start_jump = true
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}
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if start_jump {
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distance -= 1
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if distance == 0 {
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screen.current_path = strings.Split(vis_paths[i], "/")
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break
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}
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}
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}
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if strings.Join(screen.current_path, "/") == find_path {
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screen.current_path = screen.db.getPrevVisiblePath(nil)
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}
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}
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return true
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}
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func (screen *BrowserScreen) moveCursorUp() bool {
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new_path := screen.db.getPrevVisiblePath(screen.current_path)
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if new_path != nil {
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screen.current_path = new_path
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return true
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}
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return false
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}
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func (screen *BrowserScreen) moveCursorDown() bool {
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new_path := screen.db.getNextVisiblePath(screen.current_path)
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if new_path != nil {
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screen.current_path = new_path
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return true
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}
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return false
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}
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func (screen *BrowserScreen) performLayout() {}
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func (screen *BrowserScreen) drawScreen(style Style) {
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screen.drawLeftPane(style)
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screen.drawRightPane(style)
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screen.drawHeader(style)
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screen.drawFooter(style)
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if screen.mode == MODE_CHANGE_VAL {
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screen.drawInput(style)
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}
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}
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func (screen *BrowserScreen) drawInput(style Style) {
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box_x := screen.input_modal.x
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box_y := screen.input_modal.y
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box_width := screen.input_modal.width
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box_height := screen.input_modal.height
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termbox_util.FillWithChar(' ', box_x, box_y, box_x+box_width,
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box_y+box_height, style.default_fg, style.default_bg,
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)
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termbox_util.DrawBorder(box_x, box_y, box_x+box_width, box_y+box_height, style.default_fg, style.default_bg)
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termbox_util.DrawStringAtPoint(screen.input_modal.text, box_x+1,
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box_y+1, style.default_fg|termbox.AttrBold, style.default_bg|termbox.AttrBold,
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)
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termbox_util.DrawBorder(box_x+2, box_y+2, box_x+box_width-2, box_y+4, style.default_fg, style.default_bg)
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termbox_util.DrawStringAtPoint(screen.input_modal.curr_val, box_x+2, box_y+3, style.title_fg, style.title_bg)
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termbox.SetCell(box_x+1+len(screen.input_modal.curr_val)+1, box_y+1, ' ', style.title_bg, style.title_fg)
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termbox_util.DrawStringAtPoint(termbox_util.AlignText("'Enter' to Accept, 'ESC' to cancel", box_width-2, ALIGN_CENTER), box_x+2, box_y+5, style.default_fg, style.default_bg)
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}
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func (screen *BrowserScreen) drawHeader(style Style) {
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width, _ := termbox.Size()
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spaces := strings.Repeat(" ", (width / 2))
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termbox_util.DrawStringAtPoint(fmt.Sprintf("%s%s%s", spaces, PROGRAM_NAME, spaces), 0, 0, style.title_fg, style.title_bg)
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}
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func (screen *BrowserScreen) drawFooter(style Style) {
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_, height := termbox.Size()
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termbox_util.DrawStringAtPoint(fmt.Sprintf("%s(%d) - %s", screen.current_path, screen.current_type, screen.message), 0, height-1, style.default_fg, style.default_bg)
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}
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func (screen *BrowserScreen) drawLeftPane(style Style) {
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w, h := termbox.Size()
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if w >= 80 {
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w = w / 2
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}
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screen.view_port.number_of_rows = h - 2
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termbox_util.FillWithChar('=', 0, 1, w, 1, style.default_fg, style.default_bg)
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y := 2
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screen.view_port.first_row = y
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if len(screen.current_path) == 0 {
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screen.current_path = screen.db.getNextVisiblePath(nil)
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}
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// So we know how much of the tree _wants_ to be visible
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// we only have screen.view_port.number_of_rows of space though
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cur_path_spot := 0
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vis_slice, err := screen.db.buildVisiblePathSlice(nil)
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if err == nil {
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for i := range vis_slice {
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if strings.Join(screen.current_path, "/") == vis_slice[i] {
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cur_path_spot = i
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}
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}
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}
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tree_offset := 0
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max_cursor := screen.view_port.number_of_rows * 2 / 3
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if cur_path_spot > max_cursor {
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tree_offset = cur_path_spot - max_cursor
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}
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for i := range screen.db.buckets {
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// The drawBucket function returns how many lines it took up
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bkt_h := screen.drawBucket(&screen.db.buckets[i], style, (y - tree_offset))
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y += bkt_h
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}
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}
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func (screen *BrowserScreen) drawRightPane(style Style) {
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w, h := termbox.Size()
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if w >= 80 {
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// Screen is wide enough, split it
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termbox_util.FillWithChar('=', 0, 1, w, 1, style.default_fg, style.default_bg)
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termbox_util.FillWithChar('|', (w / 2), screen.view_port.first_row-1, (w / 2), h, style.default_fg, style.default_bg)
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b, p, err := screen.db.getGenericFromPath(screen.current_path)
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if err == nil {
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start_x := (w / 2) + 2
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start_y := 2
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if b != nil {
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termbox_util.DrawStringAtPoint(fmt.Sprintf("Path: %s", strings.Join(b.path, "/")), start_x, start_y, style.default_fg, style.default_bg)
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termbox_util.DrawStringAtPoint(fmt.Sprintf("Buckets: %d", len(b.buckets)), start_x, start_y+1, style.default_fg, style.default_bg)
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termbox_util.DrawStringAtPoint(fmt.Sprintf("Pairs: %d", len(b.pairs)), start_x, start_y+2, style.default_fg, style.default_bg)
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} else if p != nil {
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termbox_util.DrawStringAtPoint(fmt.Sprintf("Path: %s", strings.Join(p.path, "/")), start_x, start_y, style.default_fg, style.default_bg)
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termbox_util.DrawStringAtPoint(fmt.Sprintf("Key: %s", p.key), start_x, start_y+1, style.default_fg, style.default_bg)
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termbox_util.DrawStringAtPoint(fmt.Sprintf("Value: %s", p.val), start_x, start_y+2, style.default_fg, style.default_bg)
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}
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}
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}
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}
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/* drawBucket
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* @bkt *BoltBucket - The bucket to draw
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* @style Style - The style to use
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* @w int - The Width of the lines
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* @y int - The Y position to start drawing
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* return - The number of lines used
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*/
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func (screen *BrowserScreen) drawBucket(bkt *BoltBucket, style Style, y int) int {
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w, _ := termbox.Size()
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if w >= 80 {
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w = w / 2
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}
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used_lines := 0
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bucket_fg := style.default_fg
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bucket_bg := style.default_bg
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if comparePaths(screen.current_path, bkt.path) {
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bucket_fg = style.cursor_fg
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bucket_bg = style.cursor_bg
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}
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bkt_string := strings.Repeat(" ", screen.db.getDepthFromPath(bkt.path)*2)
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if bkt.expanded {
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bkt_string = bkt_string + "- " + bkt.name + " "
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bkt_string = fmt.Sprintf("%s%s", bkt_string, strings.Repeat(" ", (w-len(bkt_string))))
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termbox_util.DrawStringAtPoint(bkt_string, 0, (y + used_lines), bucket_fg, bucket_bg)
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used_lines += 1
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for i := range bkt.buckets {
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used_lines += screen.drawBucket(&bkt.buckets[i], style, y+used_lines)
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}
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for i := range bkt.pairs {
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used_lines += screen.drawPair(&bkt.pairs[i], style, y+used_lines)
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}
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} else {
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bkt_string = bkt_string + "+ " + bkt.name
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bkt_string = fmt.Sprintf("%s%s", bkt_string, strings.Repeat(" ", (w-len(bkt_string))))
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termbox_util.DrawStringAtPoint(bkt_string, 0, (y + used_lines), bucket_fg, bucket_bg)
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used_lines += 1
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}
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return used_lines
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}
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func (screen *BrowserScreen) drawPair(bp *BoltPair, style Style, y int) int {
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w, _ := termbox.Size()
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if w >= 80 {
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w = w / 2
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}
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bucket_fg := style.default_fg
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bucket_bg := style.default_bg
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if comparePaths(screen.current_path, bp.path) {
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bucket_fg = style.cursor_fg
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bucket_bg = style.cursor_bg
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}
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pair_string := strings.Repeat(" ", screen.db.getDepthFromPath(bp.path)*2)
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pair_string = fmt.Sprintf("%s%s: %s", pair_string, bp.key, bp.val)
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pair_string = fmt.Sprintf("%s%s", pair_string, strings.Repeat(" ", (w-len(pair_string))))
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termbox_util.DrawStringAtPoint(pair_string, 0, y, bucket_fg, bucket_bg)
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return 1
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}
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func (screen *BrowserScreen) createEditModal() bool {
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b, p, e := screen.db.getGenericFromPath(screen.current_path)
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if e == nil {
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w, h := termbox.Size()
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inp_w, inp_h := (w / 2), 6
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inp_x, inp_y := ((w / 2) - (inp_w / 2)), ((h / 2) - inp_h)
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mod := InputModal{x: inp_x, y: inp_y, width: inp_w, height: inp_h}
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if b != nil {
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mod.text = termbox_util.AlignText(fmt.Sprintf("Rename Bucket '%s' to:", b.name), inp_w, ALIGN_CENTER)
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mod.curr_val = b.name
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} else if p != nil {
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mod.text = termbox_util.AlignText(fmt.Sprintf("Input new value for '%s':", p.key), inp_w, ALIGN_CENTER)
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mod.curr_val = p.val
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}
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screen.input_modal = &mod
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screen.mode = MODE_CHANGE_VAL
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return true
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}
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return false
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}
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|
|
func (screen *BrowserScreen) insertBucket() bool {
|
|
//b, _, e := screen.db.getGenericFromPath(screen.current_path)
|
|
//if e == nil {
|
|
w, h := termbox.Size()
|
|
inp_w, inp_h := (w / 2), 6
|
|
inp_x, inp_y := ((w / 2) - (inp_w / 2)), ((h / 2) - inp_h)
|
|
mod := InputModal{x: inp_x, y: inp_y, width: inp_w, height: inp_h}
|
|
mod.text = termbox_util.AlignText("New Bucket Name:", inp_w, ALIGN_CENTER)
|
|
mod.curr_val = ""
|
|
screen.input_modal = &mod
|
|
screen.mode = MODE_INSERT_BUCKET
|
|
return true
|
|
//}
|
|
return false
|
|
}
|
|
|
|
func (screen *BrowserScreen) insertPair() bool {
|
|
return false
|
|
}
|
|
|
|
func comparePaths(p1, p2 []string) bool {
|
|
return strings.Join(p1, "/") == strings.Join(p2, "/")
|
|
}
|