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cchat-gtk/internal/ui/service/menu/menu.go

123 lines
2.3 KiB
Go

package menu
// TODO: move this package outside service
import (
"github.com/diamondburned/cchat-gtk/internal/gts"
"github.com/diamondburned/cchat-gtk/internal/ui/primitives"
"github.com/gotk3/gotk3/gdk"
"github.com/gotk3/gotk3/gtk"
)
// LazyMenu is a menu with lazy-loaded capabilities.
type LazyMenu struct {
items []Item
}
func NewLazyMenu(bindTo primitives.Connector) *LazyMenu {
l := &LazyMenu{}
bindTo.Connect("button-press-event", l.popup)
return l
}
func (m *LazyMenu) SetItems(items []Item) {
m.items = items
}
func (m *LazyMenu) AddItems(items ...Item) {
m.items = append(m.items, items...)
}
func (m *LazyMenu) AddSimpleItem(name string, fn func()) {
m.AddItems(SimpleItem(name, fn))
}
func (m *LazyMenu) Reset() {
m.items = nil
}
func (m *LazyMenu) PopupAtPointer(ev *gdk.Event) {
// Do nothing if there are no menu items.
if len(m.items) == 0 {
return
}
menu, _ := gtk.MenuNew()
MenuItems(menu, m.items)
menu.PopupAtPointer(ev)
}
func (m *LazyMenu) popup(w gtk.IWidget, ev *gdk.Event) {
// Is this a right click? Run the menu if yes.
if gts.EventIsRightClick(ev) {
m.PopupAtPointer(ev)
}
}
type MenuAppender interface {
Append(gtk.IMenuItem)
}
var _ MenuAppender = (*gtk.Menu)(nil)
func MenuSeparator(menu MenuAppender) {
s, _ := gtk.SeparatorMenuItemNew()
s.Show()
menu.Append(s)
}
func MenuItems(menu MenuAppender, items []Item) {
for _, item := range items {
menu.Append(item.ToMenuItem())
}
}
type ToolbarInserter interface {
Insert(gtk.IToolItem, int)
}
var _ ToolbarInserter = (*gtk.Toolbar)(nil)
func ToolbarSeparator(toolbar ToolbarInserter) {
s, _ := gtk.SeparatorToolItemNew()
s.Show()
toolbar.Insert(s, -1)
}
// ToolbarItems insert the given items into the toolbar.
func ToolbarItems(toolbar ToolbarInserter, items []Item) {
for _, item := range items {
toolbar.Insert(item.ToToolButton(), -1)
}
}
type Item struct {
Name string
Func func()
Extra func(*gtk.MenuItem)
}
func SimpleItem(name string, fn func()) Item {
return Item{Name: name, Func: fn}
}
func (item Item) ToMenuItem() *gtk.MenuItem {
mb, _ := gtk.MenuItemNewWithLabel(item.Name)
mb.Connect("activate", item.Func)
mb.Show()
if item.Extra != nil {
item.Extra(mb)
}
return mb
}
func (item Item) ToToolButton() *gtk.ToolButton {
tb, _ := gtk.ToolButtonNew(nil, item.Name)
tb.Connect("clicked", item.Func)
tb.Show()
return tb
}