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callbacks.go
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/
callbacks.go
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package gallium
import (
"log"
"unsafe"
)
import "C"
// This file contains all Go functions that are exported to cgo because
// the presence of an export means that the C prelude gets copied into
// two locations.
//export cgo_onReady
func cgo_onReady(appId int) {
log.Printf("cgo_onReady called with %d", appId)
// do not actually call the user function from here because that would
// block the UI loop
apps.get(appId).ready <- struct{}{}
}
//export cgo_onMenuClicked
func cgo_onMenuClicked(data unsafe.Pointer) {
log.Println("in cgo_onMenuClicked")
if menuMgr == nil {
log.Println("onMenuClicked called but menu manager was nil")
return
}
if data == nil {
log.Println("onMenuClicked called but data parameter was nil")
return
}
id := *(*int)(data)
log.Printf("cgo_onMenuClicked: id=%d", id)
item, found := menuMgr.items[id]
if !found {
log.Printf("onMenuClicked received non-existent ID %d", id)
return
}
if item.OnClick == nil {
log.Printf("onMenuClicked found %s but OnClick was nil", item.Title)
return
}
item.OnClick()
}