ui/screen/container.go

package screen

import (
	"errors"
	"fmt"

	"bitbucket.org/hevanto/ui/uiwidget"
	"fyne.io/fyne/v2"
	"fyne.io/fyne/v2/container"
)

type Container string

const (
	HScroll Container = "HScroll"
	Scroll  Container = "Scroll"
	VScroll Container = "VScroll"
)

func (cnt Container) Build(e *Element, s ScreenHandler) (c fyne.CanvasObject, err error) {
	switch cnt {
	case HScroll:
		c, err = cnt.buildHScrollContainer(e, s)
	case Scroll:
		c, err = cnt.buildScrollContainer(e, s)
	case VScroll:
		c, err = cnt.buildVScrollContainer(e, s)
	default:
		err = errors.New("invalid container")
	}
	if err != nil {
		return
	}
	if e.Decorators != nil {

		for _, dec := range e.Decorators {
			switch dec {
			case "Border":
				c = uiwidget.NewWidgetBorder(c)
			}
		}
	}

	if e.Hidden {
		c.Hide()
	}
	return
}

func (ctn Container) buildHScrollContainer(e *Element, s ScreenHandler) (c fyne.CanvasObject, err error) {
	if e.Content == nil {
		err = errors.New("HScroll: no content defined")
		return
	}

	content, err := e.Content.BuildUI(s)
	if err != nil {
		err = fmt.Errorf("HScroll: failed to build content: %w", err)
		return
	}
	c = container.NewHScroll(content)
	return
}

func (ctn Container) buildScrollContainer(e *Element, s ScreenHandler) (c fyne.CanvasObject, err error) {
	if e.Content == nil {
		err = errors.New("Scroll: no content defined")
		return
	}

	content, err := e.Content.BuildUI(s)
	if err != nil {
		err = fmt.Errorf("Scroll: failed to build content: %w", err)
		return
	}
	c = container.NewScroll(content)
	return
}

func (ctn Container) buildVScrollContainer(e *Element, s ScreenHandler) (c fyne.CanvasObject, err error) {
	if e.Content == nil {
		err = errors.New("VScroll: no content defined")
		return
	}

	content, err := e.Content.BuildUI(s)
	if err != nil {
		err = fmt.Errorf("VScroll: failed to build content: %w", err)
		return
	}
	c = container.NewScroll(content)
	return
}