From ac1b8e3cca971c38c8091f60fedfe093e6fe78df Mon Sep 17 00:00:00 2001
From: Pietro Gagliardi <pietro10@mac.com>
Date: Wed, 20 Aug 2014 01:35:05 -0400
Subject: [PATCH] Added a test for TextField.Invalid() and implemented it on
 the GTK+ backend.

---
 redo/textfield_unix.go | 14 +++++++++++++-
 redo/zz_test.go        | 13 +++++++++++++
 2 files changed, 26 insertions(+), 1 deletion(-)

diff --git a/redo/textfield_unix.go b/redo/textfield_unix.go
index c4ce8b4..e9624ee 100644
--- a/redo/textfield_unix.go
+++ b/redo/textfield_unix.go
@@ -10,6 +10,11 @@ import (
 
 // #include "gtk_unix.h"
 // extern void textfieldChanged(GtkEditable *, gpointer);
+// /* because cgo doesn't like GTK_STOCK_DIALOG_ERROR */
+// static inline void setErrorIcon(GtkEntry *entry)
+// {
+// 	gtk_entry_set_icon_from_stock(entry, GTK_ENTRY_ICON_SECONDARY, GTK_STOCK_DIALOG_ERROR);
+// }
 import "C"
 
 type textfield struct {
@@ -58,7 +63,14 @@ func (t *textfield) OnChanged(f func()) {
 }
 
 func (t *textfield) Invalid(reason string) {
-	// TODO
+	if reason == "" {
+		C.gtk_entry_set_icon_from_stock(t.entry, C.GTK_ENTRY_ICON_SECONDARY, nil)
+		return
+	}
+	C.setErrorIcon(t.entry)
+	creason := togstr(reason)
+	defer freegstr(creason)
+	C.gtk_entry_set_icon_tooltip_text(t.entry, C.GTK_ENTRY_ICON_SECONDARY, creason)
 }
 
 //export textfieldChanged
diff --git a/redo/zz_test.go b/redo/zz_test.go
index 2477de0..e1eb8fc 100644
--- a/redo/zz_test.go
+++ b/redo/zz_test.go
@@ -13,6 +13,7 @@ import (
 	"image/color"
 	"image/draw"
 	"time"
+	"strings"
 )
 
 var closeOnClick = flag.Bool("close", false, "close on click")
@@ -38,6 +39,7 @@ type testwin struct {
 	festart	Button
 	felabel	Label
 	festop	Button
+	vedit		TextField
 	openbtn	Button
 	fnlabel	Label
 	icons	[]icon
@@ -91,6 +93,14 @@ func (tw *testwin) addfe() {
 			tw.fe = nil
 		}
 	})
+	tw.vedit = NewTextField()
+	tw.vedit.OnChanged(func() {
+		if strings.Contains(tw.vedit.Text(), "bad") {
+			tw.vedit.Invalid("bad entered")
+		} else {
+			tw.vedit.Invalid("")
+		}
+	})
 	tw.openbtn = NewButton("Open")
 	tw.openbtn.OnClicked(func() {
 		fn := OpenFile()
@@ -101,9 +111,12 @@ func (tw *testwin) addfe() {
 	})
 	tw.fnlabel = NewStandaloneLabel("<no file selected>")
 	tw.festack = NewVerticalStack(tw.festart, tw.felabel, tw.festop,
+		Space(),
+		tw.vedit,
 		Space(),
 		tw.openbtn, tw.fnlabel)
 	tw.festack.SetStretchy(3)
+	tw.festack.SetStretchy(5)
 	tw.t.Append("Foreign Events", tw.festack)
 }