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package ui |
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import ( |
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"fyne.io/fyne/v2" |
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"fyne.io/fyne/v2/data/binding" |
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"fyne.io/fyne/v2/widget" |
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) |
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type Event struct { |
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EventType string |
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EventSource string |
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} |
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type EventListener func(event Event) |
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type ListWithListener struct { |
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list *widget.List |
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data binding.StringList |
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selected int |
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listeners []EventListener |
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} |
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type ClickableLabel struct { |
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widget.Label |
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listeners []EventListener |
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} |
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func NewClickableLabel(text string) *ClickableLabel { |
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label := &ClickableLabel{} |
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label.ExtendBaseWidget(label) |
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label.SetText(text) |
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label.listeners = make([]EventListener, 0) |
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return label |
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} |
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func (l *ClickableLabel) AddListener(listener EventListener) { |
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l.listeners = append(l.listeners, listener) |
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} |
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func (l *ClickableLabel) Tapped(_ *fyne.PointEvent) { |
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for _, listener := range l.listeners { |
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listener(Event{"click", l.Text}) |
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} |
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} |
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func (l *ClickableLabel) DoubleTapped(_ *fyne.PointEvent) { |
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for _, listener := range l.listeners { |
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listener(Event{"dblclick", l.Text}) |
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} |
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} |
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func NewSelectableList(data binding.StringList) *ListWithListener { |
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var list *ListWithListener |
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list = &ListWithListener{widget.NewListWithData( |
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data, |
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func() fyne.CanvasObject { |
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clickableLabel := NewClickableLabel("template") |
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clickableLabel.AddListener(list.labelClick) |
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return clickableLabel |
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}, |
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func(di binding.DataItem, co fyne.CanvasObject) { |
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co.(*ClickableLabel).Bind(di.(binding.String)) |
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}, |
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), data, -1, make([]EventListener, 0)} |
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return list |
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} |
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func (l *ListWithListener) labelClick(event Event) { |
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if event.EventType == "dblclick" { |
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for _, listener := range l.listeners { |
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listener(event) |
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} |
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} else if event.EventType == "click" { |
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label := event.EventSource |
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idx := l.getIndex(label) |
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if idx > -1 { |
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l.list.Select(idx) |
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if l.selected != idx { |
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l.selected = idx |
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for _, listener := range l.listeners { |
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listener(event) |
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} |
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} |
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} else { |
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l.list.Unselect(l.selected) |
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l.selected = -1 |
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} |
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} |
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} |
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func (l *ListWithListener) getIndex(text string) int { |
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values, _ := l.data.Get() |
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for i, value := range values { |
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if value == text { |
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return i |
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} |
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} |
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return -1 |
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} |
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func (l *ListWithListener) CanvasObject() fyne.CanvasObject { |
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return l.list |
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} |
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func (l *ListWithListener) AddListener(listener EventListener) { |
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l.listeners = append(l.listeners, listener) |
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} |
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func (l *ListWithListener) ClearSelected() { |
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if l.selected > -1 { |
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l.list.Unselect(l.selected) |
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l.selected = -1 |
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} |
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} |
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rchargel /
hdfs-explorer
