105 lines
2.1 KiB
Go
105 lines
2.1 KiB
Go
package ui
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import (
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"context"
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"time"
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"fyne.io/fyne/v2"
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"fyne.io/fyne/v2/container"
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"fyne.io/fyne/v2/widget"
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)
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type Page interface {
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fyne.Widget
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}
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type Searchable interface {
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OnSearched(string)
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}
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type BrowsingPane struct {
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widget.BaseWidget
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searchBar *searchField
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searchTimer time.Timer
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pendingSearch bool
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cancelPendingSearch context.CancelFunc
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curPage Page
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container *fyne.Container
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pageContaner *fyne.Container
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}
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type blankPage struct {
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widget.Separator
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}
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type searchField struct {
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widget.Entry
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height float32
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}
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func NewSearchField() *searchField {
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sf := &searchField{}
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sf.ExtendBaseWidget(sf)
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// this is a bit hacky
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sf.height = widget.NewEntry().MinSize().Height
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sf.PlaceHolder = "Search"
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return sf
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}
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func (s *searchField) MinSize() fyne.Size {
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return fyne.NewSize(200, s.height)
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}
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func NewBrowsingPane() *BrowsingPane {
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b := &BrowsingPane{}
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b.ExtendBaseWidget(b)
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b.searchBar = NewSearchField()
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b.searchBar.OnChanged = b.onSearchTextChanged
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b.curPage = &blankPage{}
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b.searchTimer = *time.NewTimer(0)
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b.pageContaner = container.NewMax(b.curPage)
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b.container = container.NewBorder(container.NewHBox(b.searchBar), nil, nil, nil, b.pageContaner)
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return b
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}
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func (b *BrowsingPane) SetPage(p Page) {
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if b.cancelPendingSearch != nil {
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b.cancelPendingSearch()
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b.cancelPendingSearch = nil
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}
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b.curPage = p
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b.pageContaner.Objects[0] = p
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b.Refresh()
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}
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func (b *BrowsingPane) onSearchTextChanged(text string) {
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b.searchTimer.Reset(300 * time.Millisecond)
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if s, ok := b.curPage.(Searchable); ok {
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s.OnSearched(text)
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}
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if !b.pendingSearch {
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/*
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ctx, cancel := context.WithCancel(context.Background())
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b.cancelPendingSearch = cancel
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b.pendingSearch = true
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go func(ctx context.Context) {
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select {
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case <-ctx.Done():
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b.pendingSearch = false
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case <-b.searchTimer.C:
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if s, ok := b.curPage.(Searchable); ok {
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s.OnSearched(b.searchBar.Text)
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}
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b.pendingSearch = false
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}
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}(ctx)
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*/
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}
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}
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func (b *BrowsingPane) CreateRenderer() fyne.WidgetRenderer {
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return widget.NewSimpleRenderer(b.container)
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}
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