Added Entry.

entry.go

@@ -0,0 +1,121 @@
+// 12 december 2015
+
+package ui
+
+import (
+	"unsafe"
+)
+
+// #include "ui.h"
+// extern void doEntryOnChanged(uiEntry *, void *);
+// static inline void realuiEntryOnChanged(uiEntry *b)
+// {
+// 	uiEntryOnChanged(b, doEntryOnChanged, NULL);
+// }
+import "C"
+
+// no need to lock this; only the GUI thread can access it
+var entries = make(map[*C.uiEntry]*Entry)
+
+// Entry is a Control that represents a space that the user can
+// type a single line of text into.
+type Entry struct {
+	c	*C.uiControl
+	e	*C.uiEntry
+
+	onChanged		func(*Entry)
+}
+
+// NewEntry creates a new Entry.
+func NewEntry() *Entry {
+	e := new(Entry)
+
+	e.e = C.uiNewEntry()
+	e.c = (*C.uiControl)(unsafe.Pointer(e.e))
+
+	C.realuiEntryOnChanged(e.e)
+	entries[e.e] = e
+
+	return e
+}
+
+// Destroy destroys the Entry.
+func (e *Entry) Destroy() {
+	delete(entries, e.e)
+	C.uiControlDestroy(e.c)
+}
+
+// LibuiControl returns the libui uiControl pointer that backs
+// the Window. This is only used by package ui itself and should
+// not be called by programs.
+func (e *Entry) LibuiControl() uintptr {
+	return uintptr(unsafe.Pointer(e.c))
+}
+
+// Handle returns the OS-level handle associated with this Entry.
+// On Windows this is an HWND of a standard Windows API EDIT
+// class (as provided by Common Controls version 6).
+// On GTK+ this is a pointer to a GtkEntry.
+// On OS X this is a pointer to a NSTextField.
+func (e *Entry) Handle() uintptr {
+	return uintptr(C.uiControlHandle(e.c))
+}
+
+// Show shows the Entry.
+func (e *Entry) Show() {
+	C.uiControlShow(e.c)
+}
+
+// Hide hides the Entry.
+func (e *Entry) Hide() {
+	C.uiControlHide(e.c)
+}
+
+// Enable enables the Entry.
+func (e *Entry) Enable() {
+	C.uiControlEnable(e.c)
+}
+
+// Disable disables the Entry.
+func (e *Entry) Disable() {
+	C.uiControlDisable(e.c)
+}
+
+// Text returns the Entry's text.
+func (e *Entry) Text() string {
+	ctext := C.uiEntryText(e.e)
+	text := C.GoString(ctext)
+	C.uiFreeText(ctext)
+	return text
+}
+
+// SetText sets the Entry's text to text.
+func (e *Entry) SetText(text string) {
+	ctext := C.CString(text)
+	C.uiEntrySetText(e.e, ctext)
+	freestr(ctext)
+}
+
+// OnChanged registers f to be run when the user makes a change to
+// the Entry. Only one function can be registered at a time.
+func (e *Entry) OnChanged(f func(*Entry)) {
+	e.onChanged = f
+}
+
+//export doEntryOnChanged
+func doEntryOnChanged(ee *C.uiEntry, data unsafe.Pointer) {
+	e := entries[ee]
+	if e.onChanged != nil {
+		e.onChanged(e)
+	}
+}
+
+// ReadOnly returns whether the Entry can be changed.
+func (e *Entry) ReadOnly() bool {
+	return tobool(C.uiEntryReadOnly(e.e))
+}
+
+// SetReadOnly sets whether the Entry can be changed.
+func (e *Entry) SetReadOnly(ro bool) {
+	C.uiEntrySetReadOnly(e.e, frombool(ro))
+}

zz_test.go

@@ -11,10 +11,11 @@ func TestIt(t *testing.T) {
 			Quit()
 			return true
 		})
-		c := NewEditableCombobox()
-		c.Append("Item 1")
-		c.Append("Item 2")
-		w.SetChild(c)
+		e := NewEntry()
+		e.OnChanged(func(*Entry) {
+			w.SetTitle(e.Text())
+		})
+		w.SetChild(e)
 		w.Show()
 	})
 	if err != nil {