From e22b084bea79a107ab1192f1c33fb0b2685837b4 Mon Sep 17 00:00:00 2001
From: endoffile78 <endoffile78@yahoo.com>
Date: Sun, 29 Apr 2018 12:02:13 -0500
Subject: [PATCH] Add uiBoxChild

---
 darwin/box.m    | 11 +++++++++++
 ui.h            |  9 +++++----
 unix/box.c      | 12 ++++++++++++
 windows/box.cpp | 10 ++++++++++
 4 files changed, 38 insertions(+), 4 deletions(-)

diff --git a/darwin/box.m b/darwin/box.m
index 6a1941ea..231befe2 100644
--- a/darwin/box.m
+++ b/darwin/box.m
@@ -292,6 +292,17 @@ struct uiBox {
 	[bc release];		// we don't need the initial reference now
 }
 
+ - (int)Child:(uiControl *)c
+{
+	boxChild *bc;
+	for (bc in self->children) {
+		if (bc.c == c) {
+			return 1;
+		}
+	}
+	return 0;
+}
+
 - (void)delete:(int)n
 {
 	boxChild *bc;
diff --git a/ui.h b/ui.h
index ce3e4104..0841537c 100644
--- a/ui.h
+++ b/ui.h
@@ -142,6 +142,7 @@ _UI_EXTERN uiButton *uiNewButton(const char *text);
 typedef struct uiBox uiBox;
 #define uiBox(this) ((uiBox *) (this))
 _UI_EXTERN void uiBoxAppend(uiBox *b, uiControl *child, int stretchy);
+_UI_EXTERN int uiBoxChild(uiBox *b, uiControl *c);
 _UI_EXTERN void uiBoxDelete(uiBox *b, int index);
 _UI_EXTERN int uiBoxPadded(uiBox *b);
 _UI_EXTERN void uiBoxSetPadded(uiBox *b, int padded);
@@ -685,7 +686,7 @@ _UI_EXTERN uiUnderline uiAttributeUnderline(const uiAttribute *a);
 // platform-specific colors for suggestion underlines; to use them
 // correctly, pair them with uiUnderlineSuggestion (though they can
 // be used on other types of underline as well).
-// 
+//
 // If an underline type is applied but no underline color is
 // specified, the text color is used instead. If an underline color
 // is specified without an underline type, the underline color
@@ -721,10 +722,10 @@ _UI_EXTERN void uiAttributeUnderlineColor(const uiAttribute *a, uiUnderlineColor
 // uiOpenTypeFeatures instance. Each value is a 32-bit integer,
 // often used as a Boolean flag, but sometimes as an index to choose
 // a glyph shape to use.
-// 
+//
 // If a font does not support a certain feature, that feature will be
 // ignored. (TODO verify this on all OSs)
-// 
+//
 // See the OpenType specification at
 // https://www.microsoft.com/typography/otspec/featuretags.htm
 // for the complete list of available features, information on specific
@@ -765,7 +766,7 @@ _UI_EXTERN void uiOpenTypeFeaturesRemove(uiOpenTypeFeatures *otf, char a, char b
 // uiOpenTypeFeaturesGet() determines whether the given feature
 // tag is present in otf. If it is, *value is set to the tag's value and
 // nonzero is returned. Otherwise, zero is returned.
-// 
+//
 // Note that if uiOpenTypeFeaturesGet() returns zero, value isn't
 // changed. This is important: if a feature is not present in a
 // uiOpenTypeFeatures, the feature is NOT treated as if its
diff --git a/unix/box.c b/unix/box.c
index 23fb7f7c..41c3b11a 100644
--- a/unix/box.c
+++ b/unix/box.c
@@ -88,6 +88,18 @@ void uiBoxAppend(uiBox *b, uiControl *c, int stretchy)
 	g_array_append_val(b->controls, bc);
 }
 
+int uiBoxChild(uiBox *b, uiControl *c)
+{
+        guint i;
+        for (i = 0; i < b->controls->len; i++) {
+                struct boxChild *bc = ctrl(b, i);
+                if (bc->c == c) {
+                        return 1;
+                }
+        }
+        return 0;
+}
+
 void uiBoxDelete(uiBox *b, int index)
 {
 	struct boxChild *bc;
diff --git a/windows/box.cpp b/windows/box.cpp
index 9567954b..cc9ce5ad 100644
--- a/windows/box.cpp
+++ b/windows/box.cpp
@@ -267,6 +267,16 @@ void uiBoxAppend(uiBox *b, uiControl *c, int stretchy)
 	uiWindowsControlMinimumSizeChanged(uiWindowsControl(b));
 }
 
+void uiBoxChild(uiBox *b, uiControl *c)
+{
+	for (struct boxChild *bc : b->controls) {
+                if (bc->c == c){
+                        return 1;
+                }
+        }
+        return 0;
+}
+
 void uiBoxDelete(uiBox *b, int index)
 {
 	uiControl *c;