settings improvements

src/dlangui/core/settings.d

@@ -80,6 +80,23 @@ class SettingsFile {
         }
     }
 
+    static int limitInt(long value, int minvalue, int maxvalue) {
+        if (value < minvalue)
+            return minvalue;
+        else if (value > maxvalue)
+            return maxvalue;
+        return cast(int)value;
+    }
+
+    static string limitString(string value, const string[] values) {
+        assert(values.length > 0);
+        foreach(v; values)
+            if (v.equal(value))
+                return value;
+        return values[0];
+    }
+
+
     @property bool loaded() {
         return _loaded;
     }
@@ -223,7 +240,6 @@ final class Setting {
         _changed = changed;
     }
 
-
     /// array
     private static struct SettingArray {
         Setting[] list;

src/dlangui/dialogs/settingsdialog.d

@@ -270,6 +270,31 @@ class ExecutableFileNameEditItem : SettingsItem {
 	}
 }
 
+class PathNameEditItem : SettingsItem {
+	string _defaultValue;
+	this(string id, UIString label, string defaultValue) {
+		super(id, label);
+		_defaultValue = defaultValue;
+	}
+	/// create setting widget
+	override Widget[] createWidgets(Setting settings) {
+        import dlangui.dialogs.filedlg;
+		TextWidget lbl = new TextWidget(_id ~ "-label", _label);
+		DirEditLine ed = new DirEditLine(_id ~ "-path-edit");
+        ed.addFilter(FileFilterEntry(UIString("All files"d), "*.*"));
+        ed.minWidth = 200;
+		Setting setting = settings.settingByPath(_id, SettingType.STRING);
+		string value = setting.strDef(_defaultValue);
+		setting.str = value;
+		ed.text = toUTF32(value);
+		ed.contentChange = delegate(EditableContent content) {
+			string value = toUTF8(content.text);
+			setting.str = value;
+		};
+		return [lbl, ed];
+	}
+}
+
 /// settings page - item of settings tree, can edit several settings
 class SettingsPage {
     protected SettingsPage _parent;
@@ -348,6 +373,13 @@ class SettingsPage {
 		return res;
 	}
 	
+	/// add EditLine to edit filename
+	PathNameEditItem addDirNameEdit(string id, UIString label, string defaultValue = "") {
+		PathNameEditItem res = new PathNameEditItem(id, label, defaultValue);
+		addItem(res);
+		return res;
+	}
+	
 	/// add EditLine to edit executable file name
 	ExecutableFileNameEditItem addExecutableFileNameEdit(string id, UIString label, string defaultValue = "") {
 		ExecutableFileNameEditItem res = new ExecutableFileNameEditItem(id, label, defaultValue);