andlabs-ui/redo/table_darwin.go

// 29 july 2014

package ui

import (
	"fmt"
	"reflect"
	"unsafe"
)

// #include "objc_darwin.h"
import "C"

type table struct {
	*widgetbase
	*tablebase

	// TODO kludge
	table		C.id
}

func finishNewTable(b *tablebase, ty reflect.Type) Table {
	id := C.newTable()
	t := &table{
		widgetbase:	newWidget(C.newScrollView(id)),
		tablebase:		b,
		table:		id,
	}
	C.tableMakeDataSource(t.table, unsafe.Pointer(t))
	for i := 0; i < ty.NumField(); i++ {
		cname := C.CString(ty.Field(i).Name)
		C.tableAppendColumn(t.table, cname)
		C.free(unsafe.Pointer(cname))		// free now (not deferred) to conserve memory
	}
	return t
}

func (t *table) Unlock() {
	t.unlock()
	// TODO RACE CONDITION HERE
	// not sure about this one...
	t.RLock()
	defer t.RUnlock()
	C.tableUpdate(t.table)
}

//export goTableDataSource_getValue
func goTableDataSource_getValue(data unsafe.Pointer, row C.intptr_t, col C.intptr_t) *C.char {
	t := (*table)(data)
	t.RLock()
	defer t.RUnlock()
	d := reflect.Indirect(reflect.ValueOf(t.data))
	datum := d.Index(int(row)).Field(int(col))
	s := fmt.Sprintf("%v", datum)
	return C.CString(s)
}

//export goTableDataSource_getRowCount
func goTableDataSource_getRowCount(data unsafe.Pointer) C.intptr_t {
	t := (*table)(data)
	t.RLock()
	defer t.RUnlock()
	d := reflect.Indirect(reflect.ValueOf(t.data))
	return C.intptr_t(d.Len())
}