138 lines
3.2 KiB
Go
138 lines
3.2 KiB
Go
// 29 july 2014
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package ui
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import (
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"fmt"
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"reflect"
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"unsafe"
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)
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// #include "objc_darwin.h"
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import "C"
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type table struct {
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*tablebase
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*scroller
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images []C.id
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selected *event
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}
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func finishNewTable(b *tablebase, ty reflect.Type) Table {
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id := C.newTable()
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t := &table{
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scroller: newScroller(id, true), // border on Table
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tablebase: b,
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selected: newEvent(),
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}
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t.fpreferredSize = t.xpreferredSize
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// also sets the delegate
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C.tableMakeDataSource(t.id, unsafe.Pointer(t))
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for i := 0; i < ty.NumField(); i++ {
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cname := C.CString(ty.Field(i).Name)
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coltype := C.colTypeText
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editable := false
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switch {
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case ty.Field(i).Type == reflect.TypeOf(ImageIndex(0)):
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coltype = C.colTypeImage
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case ty.Field(i).Type.Kind() == reflect.Bool:
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coltype = C.colTypeCheckbox
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editable = true
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}
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C.tableAppendColumn(t.id, C.intptr_t(i), cname, C.int(coltype), toBOOL(editable))
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C.free(unsafe.Pointer(cname)) // free now (not deferred) to conserve memory
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}
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return t
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}
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func (t *table) Unlock() {
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t.unlock()
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// there's a possibility that user actions can happen at this point, before the view is updated
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// alas, this is something we have to deal with, because Unlock() can be called from any thread
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go func() {
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Do(func() {
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t.RLock()
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defer t.RUnlock()
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C.tableUpdate(t.id)
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})
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}()
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}
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func (t *table) LoadImageList(i ImageList) {
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i.apply(&t.images)
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}
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func (t *table) Selected() int {
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t.RLock()
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defer t.RUnlock()
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return int(C.tableSelected(t.id))
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}
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func (t *table) Select(index int) {
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t.RLock()
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defer t.RUnlock()
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C.tableSelect(t.id, C.intptr_t(index))
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}
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func (t *table) OnSelected(f func()) {
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t.selected.set(f)
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}
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//export goTableDataSource_getValue
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func goTableDataSource_getValue(data unsafe.Pointer, row C.intptr_t, col C.intptr_t, outtype *C.int) unsafe.Pointer {
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t := (*table)(data)
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t.RLock()
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defer t.RUnlock()
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d := reflect.Indirect(reflect.ValueOf(t.data))
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datum := d.Index(int(row)).Field(int(col))
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switch {
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case datum.Type() == reflect.TypeOf(ImageIndex(0)):
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*outtype = C.colTypeImage
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d := datum.Interface().(ImageIndex)
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return unsafe.Pointer(t.images[d])
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case datum.Kind() == reflect.Bool:
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*outtype = C.colTypeCheckbox
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if datum.Bool() == true {
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// return a non-nil pointer
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// outtype isn't Go-side so it'll work
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return unsafe.Pointer(outtype)
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}
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return nil
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default:
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s := fmt.Sprintf("%v", datum)
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return unsafe.Pointer(C.CString(s))
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}
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}
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//export goTableDataSource_getRowCount
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func goTableDataSource_getRowCount(data unsafe.Pointer) C.intptr_t {
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t := (*table)(data)
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t.RLock()
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defer t.RUnlock()
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d := reflect.Indirect(reflect.ValueOf(t.data))
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return C.intptr_t(d.Len())
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}
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//export goTableDataSource_toggled
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func goTableDataSource_toggled(data unsafe.Pointer, row C.intptr_t, col C.intptr_t, checked C.BOOL) {
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t := (*table)(data)
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t.Lock()
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defer t.Unlock()
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d := reflect.Indirect(reflect.ValueOf(t.data))
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datum := d.Index(int(row)).Field(int(col))
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datum.SetBool(fromBOOL(checked))
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}
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//export tableSelectionChanged
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func tableSelectionChanged(data unsafe.Pointer) {
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t := (*table)(data)
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t.selected.fire()
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}
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func (t *table) xpreferredSize(d *sizing) (width, height int) {
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s := C.tablePreferredSize(t.id)
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return int(s.width), int(s.height)
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}
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