73 lines
2.0 KiB
Go
73 lines
2.0 KiB
Go
// 12 december 2015
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package ui
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import (
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"unsafe"
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)
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// #include "ui.h"
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// extern void doEditableComboboxOnChanged(uiEditableCombobox *, void *);
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// // see golang/go#19835
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// typedef void (*editableComboboxCallback)(uiEditableCombobox *, void *);
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import "C"
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// EditableCombobox is a Control that represents a drop-down list
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// of strings that the user can choose one of at any time. It also has
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// an entry field that the user can type an alternate choice into.
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type EditableCombobox struct {
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ControlBase
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c *C.uiEditableCombobox
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onChanged func(*EditableCombobox)
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}
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// NewEditableCombobox creates a new EditableCombobox.
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func NewEditableCombobox() *EditableCombobox {
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c := new(EditableCombobox)
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c.c = C.uiNewEditableCombobox()
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C.uiEditableComboboxOnChanged(c.c, C.editableComboboxCallback(C.doEditableComboboxOnChanged), nil)
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c.ControlBase = NewControlBase(c, uintptr(unsafe.Pointer(c.c)))
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return c
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}
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// Append adds the named item to the end of the EditableCombobox.
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func (e *EditableCombobox) Append(text string) {
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ctext := C.CString(text)
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C.uiEditableComboboxAppend(e.c, ctext)
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freestr(ctext)
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}
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// Text returns the text in the entry of the EditableCombobox, which
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// could be one of the choices in the list if the user has selected one.
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func (e *EditableCombobox) Text() string {
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ctext := C.uiEditableComboboxText(e.c)
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text := C.GoString(ctext)
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C.uiFreeText(ctext)
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return text
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}
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// SetText sets the text in the entry of the EditableCombobox.
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func (e *EditableCombobox) SetText(text string) {
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ctext := C.CString(text)
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C.uiEditableComboboxSetText(e.c, ctext)
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freestr(ctext)
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}
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// OnChanged registers f to be run when the user either selects an
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// item or changes the text in the EditableCombobox. Only one
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// function can be registered at a time.
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func (e *EditableCombobox) OnChanged(f func(*EditableCombobox)) {
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e.onChanged = f
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}
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//export doEditableComboboxOnChanged
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func doEditableComboboxOnChanged(cc *C.uiEditableCombobox, data unsafe.Pointer) {
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e := ControlFromLibui(uintptr(unsafe.Pointer(cc))).(*EditableCombobox)
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if e.onChanged != nil {
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e.onChanged(e)
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}
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}
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