loading_skeleton.go RawHistoryFolder

1package component
2
3import (
4	"github.com/bnema/dumber/internal/ui/layout"
5	"github.com/jwijenbergh/puregotk/v4/gtk"
6)
7
8// LoadingSkeleton displays a themed loading placeholder.
9// It is intended to be embedded as an overlay while primary content is loading.
10// Shows a faded app logo and spinner.
11type LoadingSkeleton struct {
12	container layout.BoxWidget
13	content   layout.BoxWidget
14	spinner   layout.SpinnerWidget
15	logo      layout.ImageWidget
16}
17
18const (
19	loadingSkeletonSpacing  = 6
20	loadingSkeletonLogoSize = 512
21)
22
23func NewLoadingSkeleton(factory layout.WidgetFactory) *LoadingSkeleton {
24	container := factory.NewBox(layout.OrientationVertical, 0)
25	container.SetHexpand(true)
26	container.SetVexpand(true)
27	container.SetHalign(gtk.AlignFillValue)
28	container.SetValign(gtk.AlignFillValue)
29	container.SetCanFocus(false)
30	container.SetCanTarget(false)
31	container.AddCssClass("loading-skeleton")
32
33	content := factory.NewBox(layout.OrientationVertical, loadingSkeletonSpacing)
34	content.SetHalign(gtk.AlignCenterValue)
35	content.SetValign(gtk.AlignCenterValue)
36	content.SetCanFocus(false)
37	content.SetCanTarget(false)
38	content.AddCssClass("loading-skeleton-content")
39
40	spinner := factory.NewSpinner()
41	spinner.SetHalign(gtk.AlignCenterValue)
42	spinner.SetValign(gtk.AlignCenterValue)
43	spinner.SetCanFocus(false)
44	spinner.SetCanTarget(false)
45	spinner.SetSizeRequest(32, 32)
46	spinner.AddCssClass("loading-skeleton-spinner")
47
48	// Faded app logo
49	logo := factory.NewImage()
50	logo.SetHalign(gtk.AlignCenterValue)
51	logo.SetValign(gtk.AlignCenterValue)
52	logo.SetCanFocus(false)
53	logo.SetCanTarget(false)
54	logo.SetSizeRequest(loadingSkeletonLogoSize, loadingSkeletonLogoSize)
55	logo.SetPixelSize(loadingSkeletonLogoSize)
56	logo.AddCssClass("loading-skeleton-logo")
57
58	// Set logo texture if available
59	if logoTexture := GetLogoTexture(); logoTexture != nil {
60		logo.SetFromPaintable(logoTexture)
61	}
62
63	// Layout: logo, spinner (vertically centered)
64	content.Append(logo)
65	content.Append(spinner)
66	container.Append(content)
67
68	ls := &LoadingSkeleton{
69		container: container,
70		content:   content,
71		spinner:   spinner,
72		logo:      logo,
73	}
74	ls.SetVisible(true)
75	return ls
76}
77
78func (ls *LoadingSkeleton) Widget() layout.Widget {
79	if ls == nil {
80		return nil
81	}
82	return ls.container
83}
84
85func (ls *LoadingSkeleton) SetVisible(visible bool) {
86	if ls == nil || ls.container == nil {
87		return
88	}
89	ls.container.SetVisible(visible)
90	if ls.spinner != nil {
91		if visible {
92			ls.spinner.Start()
93		} else {
94			ls.spinner.Stop()
95		}
96	}
97}