libui: primp file picker dialogs

* support for filters, for Windows (tested) and GTK (theoretical)
* add extra parameter for setting the start directory, but not supported yet

1 files changed, 51 insertions, 5 deletions

diff --git a/src/libui_sdl/libui/unix/stddialogs.c b/src/libui_sdl/libui/unix/stddialogs.c
index 93302f7..edce773 100644
--- a/src/libui_sdl/libui/unix/stddialogs.c
+++ b/src/libui_sdl/libui/unix/stddialogs.c
@@ -6,7 +6,7 @@
 
 #define windowWindow(w) (GTK_WINDOW(uiControlHandle(uiControl(w))))
 
-static char *filedialog(GtkWindow *parent, GtkFileChooserAction mode, const gchar *confirm)
+static char *filedialog(GtkWindow *parent, GtkFileChooserAction mode, const gchar *confirm, char* filter, char* initpath)
 {
 	GtkWidget *fcd;
 	GtkFileChooser *fc;
@@ -18,6 +18,52 @@ static char *filedialog(GtkWindow *parent, GtkFileChooserAction mode, const gcha
 		confirm, GTK_RESPONSE_ACCEPT,
 		NULL);
 	fc = GTK_FILE_CHOOSER(fcd);
+	
+	// filters
+	{
+		gchar _filter[256];
+        gchar* fp = &_filter[0]; int s = 0;
+        gchar* fname;
+        for (int i = 0; i < 255; i++)
+        {
+            if (filter[i] == '|' || filter[i] == '\0')
+            {
+                _filter[i] = '\0';
+                if (s & 1)
+                {
+					GtkFileFilter* filter = gtk_file_filter_new();
+					gtk_file_filter_set_name(filter, fname);
+					
+					for (gchar* j = fp; ; j++)
+					{
+						if (*j == ';')
+						{
+							gtk_file_filter_add_pattern(filter, fp);
+							fp = j+1;
+						}
+						else if (*j == '\0')
+						{
+							gtk_file_filter_add_pattern(filter, fp);
+							break;
+						}
+					}
+					
+					gtk_file_chooser_add_filter(fc, filter);
+                }
+                else
+                {
+                    fname = fp;
+                }
+                fp = &_filter[i+1];
+                s++;
+                if (s >= 8) break;
+                if (filter[i] == '\0') break;
+            }
+            else
+                _filter[i] = filter[i];
+        }
+	}
+	
 	gtk_file_chooser_set_local_only(fc, FALSE);
 	gtk_file_chooser_set_select_multiple(fc, FALSE);
 	gtk_file_chooser_set_show_hidden(fc, TRUE);
@@ -33,14 +79,14 @@ static char *filedialog(GtkWindow *parent, GtkFileChooserAction mode, const gcha
 	return filename;
 }
 
-char *uiOpenFile(uiWindow *parent)
+char *uiOpenFile(uiWindow *parent, char* filter, char* initpath)
 {
-	return filedialog(windowWindow(parent), GTK_FILE_CHOOSER_ACTION_OPEN, "_Open");
+	return filedialog(windowWindow(parent), GTK_FILE_CHOOSER_ACTION_OPEN, "_Open", filter, initpath);
 }
 
-char *uiSaveFile(uiWindow *parent)
+char *uiSaveFile(uiWindow *parent, char* filter, char* initpath)
 {
-	return filedialog(windowWindow(parent), GTK_FILE_CHOOSER_ACTION_SAVE, "_Save");
+	return filedialog(windowWindow(parent), GTK_FILE_CHOOSER_ACTION_SAVE, "_Save", filter, initpath);
 }
 
 static void msgbox(GtkWindow *parent, const char *title, const char *description, GtkMessageType type, GtkButtonsType buttons)