/
content.go
145 lines (134 loc) · 2.94 KB
/
content.go
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package widget
import (
"errors"
"fmt"
"github.com/jroimartin/gocui"
)
type ContentView struct {
name string
title string
content string
clientWidth int
clientHeight int
offsetX int
offsetY int
contentWidth int
contentHeight int
editable bool
ui *gocui.Gui
view *gocui.View
}
func (widget *ContentView) Write(p []byte) (n int, err error) {
if widget.editable {
_ = widget.view.SetOrigin(0, 0)
_ = widget.view.SetCursor(0, 0)
}
widget.view.Clear()
n, err = widget.view.Write(p)
widget.ui.Update(func(gui *gocui.Gui) error {
return nil
})
return
}
func (widget *ContentView) draw() {
if widget.ui == nil {
return
}
widget.ui.Update(func(gui *gocui.Gui) error {
if view, err := gui.View(widget.name); err == nil {
view.Clear()
if widget.editable {
_ = view.SetOrigin(0, 0)
_ = view.SetCursor(0, 0)
}
_, _ = fmt.Fprintln(view, widget.content)
}
return nil
})
}
func (widget *ContentView) SetContent(s string) *ContentView {
widget.content = s
widget.draw()
return widget
}
func (widget *ContentView) AppendString(s string) {
widget.content += s
widget.draw()
}
func (widget *ContentView) Offset(x, y int) *ContentView {
widget.offsetX = x
widget.offsetY = y
return widget
}
func (widget *ContentView) Title(s string) *ContentView {
widget.title = s
return widget
}
func (widget *ContentView) Editable() *ContentView {
if widget.view != nil {
widget.view.Editable = true
}
widget.editable = true
return widget
}
func (widget *ContentView) Layout(ui *gocui.Gui) (err error) {
var (
x, y int
offsetX, offsetY int
)
widget.ui = ui
widget.clientWidth, widget.clientHeight = ui.Size()
if widget.offsetX < 0 {
offsetX = widget.clientWidth + widget.offsetX
} else {
offsetX = widget.offsetX
}
if widget.offsetY < 0 {
offsetY = widget.clientHeight + widget.offsetY
} else {
offsetY = widget.offsetY
}
if widget.contentWidth == 0 {
x = widget.clientWidth - 1
} else {
if widget.contentWidth < 0 {
x = offsetX + (widget.clientWidth + widget.contentWidth)
} else {
x = offsetX + widget.contentWidth
}
}
if widget.contentHeight == 0 {
y = widget.clientHeight - widget.offsetY - 1
} else {
if widget.contentHeight < 0 {
y = offsetY + (widget.clientHeight + widget.contentHeight)
} else {
y = offsetY + widget.contentHeight
}
}
if widget.view, err = ui.SetView(widget.name, offsetX, offsetY, x, y); err != nil {
if !errors.Is(err, gocui.ErrUnknownView) {
return
}
err = nil
}
if widget.title != "" {
widget.view.Title = widget.title
}
if widget.content != "" {
_, _ = fmt.Fprintln(widget.view, widget.content)
}
if widget.editable {
widget.view.Editable = true
widget.view.Wrap = true
ui.Cursor = true
}
return
}
func NewContentView(name string, width int, height int) *ContentView {
return &ContentView{
name: name,
contentWidth: width,
contentHeight: height,
}
}