Method SetView

pkg/gocui/gui.go:309–352

SetView creates a new view with its top-left corner at (x0, y0) and the bottom-right one at (x1, y1). If a view with the same name already exists, its dimensions are updated; otherwise, the error ErrUnknownView is returned, which allows to assert if the View must be initialized. It checks if the pos

(name string, x0, y0, x1, y1 int, overlaps byte)

// ErrUnknownView is returned, which allows to assert if the View must
// be initialized. It checks if the position is valid.
func (g *Gui) SetView(name string, x0, y0, x1, y1 int, overlaps byte) (*View, error) {
	if name == "" {
		return nil, errors.New("invalid name")
	}

	if v, err := g.View(name); err == nil {
		sizeChanged := v.x0 != x0 || v.x1 != x1 || v.y0 != y0 || v.y1 != y1

		v.x0 = x0
		v.y0 = y0
		v.x1 = x1
		v.y1 = y1

		if sizeChanged {
			v.clearViewLines()

			if v.Editable {
				cursorX, cursorY := v.TextArea.GetCursorXY()
				newViewCursorX, newOriginX := updatedCursorAndOrigin(0, v.InnerWidth(), cursorX)
				newViewCursorY, newOriginY := updatedCursorAndOrigin(0, v.InnerHeight(), cursorY)

				v.SetCursor(newViewCursorX, newViewCursorY)
				v.SetOrigin(newOriginX, newOriginY)
			}
		}

		return v, nil
	}

	g.Mutexes.ViewsMutex.Lock()

	v := NewView(name, x0, y0, x1, y1, g.outputMode)
	v.BgColor, v.FgColor = g.BgColor, g.FgColor
	v.SelBgColor, v.SelFgColor = g.SelBgColor, g.SelFgColor
	v.Overlaps = overlaps
	g.views = append(g.views, v)

	v.setOnSelectResult(g.onSelectSearchItem)
	v.setRenderSearchStatus(g.renderSearchStatus)

	g.Mutexes.ViewsMutex.Unlock()

	return v, errors.Wrap(ErrUnknownView, 0)
}

func (g *Gui) onSelectSearchItem(v *View, selectedLineIdx int) {
	if g.onSelectSearchResultFunc != nil {