112 lines
2.8 KiB
Go
112 lines
2.8 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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"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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memBolt 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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}
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func (screen *BrowserScreen) handleKeyEvent(event termbox.Event) int {
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if event.Ch == '?' { // 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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return EXIT_SCREEN_INDEX
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} else if event.Ch == 'j' {
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// Move the cursor down
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if screen.cursor.y < screen.view_port.number_of_rows-1 {
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screen.cursor.y++
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}
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} else if event.Ch == 'k' {
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// Move the cursor up
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if screen.cursor.y > screen.view_port.first_row {
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screen.cursor.y--
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}
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} else if event.Ch == 'e' {
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screen.queued_command = "edit"
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} else if event.Key == termbox.KeyEnter {
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// Select the current item
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screen.queued_command = "select"
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}
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return BROWSER_SCREEN_INDEX
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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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width, _ := termbox.Size()
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spaces := strings.Repeat(" ", (width/2)-(len(PROGRAM_NAME)-2))
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drawStringAtPoint(fmt.Sprintf("%s%s%s", spaces, PROGRAM_NAME, spaces), 0, 0, style.title_fg, style.title_bg)
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x, y := 2, 2
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screen.view_port.first_row = y
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if screen.cursor.y == 0 {
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screen.cursor.y = y
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}
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for _, bkt := range screen.memBolt.buckets {
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_, y = screen.drawBucket(&bkt, style, x, y)
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}
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screen.view_port.number_of_rows = y
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}
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func (screen *BrowserScreen) drawBucket(b *BoltBucket, style Style, x, y int) (int, int) {
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bkt := b
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bucket_fg := style.default_fg
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bucket_bg := style.default_bg
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if y == screen.cursor.y {
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bucket_fg = style.cursor_fg
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bucket_bg = style.cursor_bg
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if screen.queued_command == "select" {
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// Expand/Collapse the bucket
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bkt.expanded = !bkt.expanded
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screen.queued_command = ""
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}
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}
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bkt_string := " "
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start_x := x
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if bkt.expanded {
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bkt_string = bkt_string + "- " + bkt.name + " "
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x = drawStringAtPoint(bkt_string, x, y, bucket_fg, bucket_bg)
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y = y + 1
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for _, ib := range bkt.buckets {
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_, y = screen.drawBucket(&ib, style, start_x+2, y)
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}
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for _, ip := range bkt.pairs {
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_, y = screen.drawPair(ip, style, x, y)
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}
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} else {
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bkt_string = bkt_string + "+ " + bkt.name + " "
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x = drawStringAtPoint(bkt_string, x, y, bucket_fg, bucket_bg)
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y = y + 1
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}
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return x, y
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}
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func (screen *BrowserScreen) drawPair(bp BoltPair, style Style, x, y int) (int, int) {
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bucket_fg := style.default_fg
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bucket_bg := style.default_bg
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if y == screen.cursor.y {
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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 := fmt.Sprintf("%s: %s", bp.key, bp.val)
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x = drawStringAtPoint(pair_string, x, y, bucket_fg, bucket_bg)
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y = y + 1
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return x, y
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}
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