boltbrowser/vendor/github.com/br0xen/termbox-util/termbox_frame.go

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package termboxUtil
import "github.com/nsf/termbox-go"
// Frame is a frame for holding other elements
// It manages it's own x/y, tab index
type Frame struct {
id string
x, y, width, height int
tabIdx int
fg, bg termbox.Attribute
bordered bool
controls []termboxControl
tabSkip bool
}
// CreateFrame creates a Frame at x, y that is w by h
func CreateFrame(x, y, w, h int, fg, bg termbox.Attribute) *Frame {
s := Frame{x: x, y: y, width: w, height: h, fg: fg, bg: bg, bordered: true}
return &s
}
// GetID returns this control's ID
func (i *Frame) GetID() string { return i.id }
// SetID sets this control's ID
func (i *Frame) SetID(newID string) {
i.id = newID
}
// GetX returns the x position of the frame
func (i *Frame) GetX() int { return i.x }
// SetX sets the x position of the frame
func (i *Frame) SetX(x int) {
i.x = x
}
// GetY returns the y position of the frame
func (i *Frame) GetY() int { return i.y }
// SetY sets the y position of the frame
func (i *Frame) SetY(y int) {
i.y = y
}
// GetWidth returns the current width of the frame
func (i *Frame) GetWidth() int { return i.width }
// SetWidth sets the current width of the frame
func (i *Frame) SetWidth(w int) {
i.width = w
}
// GetHeight returns the current height of the frame
func (i *Frame) GetHeight() int { return i.height }
// SetHeight sets the current height of the frame
func (i *Frame) SetHeight(h int) {
i.height = h
}
// GetFgColor returns the foreground color
func (i *Frame) GetFgColor() termbox.Attribute { return i.fg }
// SetFgColor sets the foreground color
func (i *Frame) SetFgColor(fg termbox.Attribute) {
i.fg = fg
}
// GetBgColor returns the background color
func (i *Frame) GetBgColor() termbox.Attribute { return i.bg }
// SetBgColor sets the current background color
func (i *Frame) SetBgColor(bg termbox.Attribute) {
i.bg = bg
}
// IsBordered returns true or false if this frame has a border
func (i *Frame) IsBordered() bool { return i.bordered }
// SetBordered sets whether we render a border around the frame
func (i *Frame) SetBordered(b bool) {
i.bordered = b
}
// IsTabSkipped returns whether this modal has it's tabskip flag set
func (i *Frame) IsTabSkipped() bool {
return i.tabSkip
}
// SetTabSkip sets the tabskip flag for this control
func (i *Frame) SetTabSkip(b bool) {
i.tabSkip = b
}
// AddControl adds a control to the frame
func (i *Frame) AddControl(t termboxControl) {
i.controls = append(i.controls, t)
}
// GetActiveControl returns the control at tabIdx
func (i *Frame) GetActiveControl() termboxControl {
if len(i.controls) >= i.tabIdx {
return i.controls[i.tabIdx]
}
return nil
}
// GetControls returns a slice of all controls
func (i *Frame) GetControls() []termboxControl {
return i.controls
}
// GetControl returns the control at index i
func (i *Frame) GetControl(idx int) termboxControl {
if len(i.controls) >= idx {
return i.controls[idx]
}
return nil
}
// GetControlCount returns the number of controls contained
func (i *Frame) GetControlCount() int {
return len(i.controls)
}
// GetLastControl returns the last control contained
func (i *Frame) GetLastControl() termboxControl {
return i.controls[len(i.controls)-1]
}
// DrawControl figures out the relative position of the control,
// sets it, draws it, then resets it.
func (i *Frame) DrawControl(t termboxControl) {
ctlX, ctlY := t.GetX(), t.GetY()
t.SetX((i.GetX() + ctlX))
t.SetY((i.GetY() + ctlY))
t.Draw()
t.SetX(ctlX)
t.SetY(ctlY)
}
// GetBottomY returns the y of the lowest control in the frame
func (i *Frame) GetBottomY() int {
var ret int
for idx := range i.controls {
if i.controls[idx].GetY()+i.controls[idx].GetHeight() > ret {
ret = i.controls[idx].GetY() + i.controls[idx].GetHeight()
}
}
return ret
}
// HandleEvent accepts the termbox event and returns whether it was consumed
func (i *Frame) HandleEvent(event termbox.Event) bool {
if event.Key == termbox.KeyTab {
i.FindNextTabStop()
return true
}
return i.controls[i.tabIdx].HandleEvent(event)
}
// FindNextTabStop finds the next control that can be tabbed to
// A return of true means it found a different one than we started on.
func (i *Frame) FindNextTabStop() bool {
startTab := i.tabIdx
i.tabIdx = (i.tabIdx + 1) % len(i.controls)
for i.controls[i.tabIdx].IsTabSkipped() {
i.tabIdx = (i.tabIdx + 1) % len(i.controls)
if i.tabIdx == startTab {
break
}
}
return i.tabIdx != startTab
}
// Draw outputs the Scoll Frame on the screen
func (i *Frame) Draw() {
maxWidth := i.width
maxHeight := i.height
x, y := i.x, i.y
startX := i.x
startY := i.y
if i.bordered {
FillWithChar(' ', i.x, i.y, i.x+i.width, i.y+i.height, i.fg, i.bg)
DrawBorder(i.x, i.y, i.x+i.width, i.y+i.height, i.fg, i.bg)
maxWidth--
maxHeight--
x++
y++
startX++
startY++
}
for idx := range i.controls {
i.DrawControl(i.controls[idx])
}
}