added missing file ./src/themes.js

src/themes.js

@@ -0,0 +1,49 @@
+'use strict';
+
+// This file creates the Hypergrid theme registry, exposed as `Hypergrid.themes` (see).
+// The initial registry consists of a single theme ('default').
+// Application developers can add additional themes to this registry.
+
+var defaults = require('./defaults');
+
+var styles = [
+    'BackgroundColor',
+    'Color',
+    'Font'
+];
+
+var styleWithHalign = styles.concat([
+    'Halign'
+]);
+
+var dataCellStyles = styleWithHalign.concat([
+    'cellPadding',
+    'iconPadding'
+]);
+
+var stylers = [
+    { prefix: '',                                props: dataCellStyles },
+    { prefix: 'foregroundSelection',             props: styles },
+    { prefix: 'columnHeader',                    props: styleWithHalign },
+    { prefix: 'columnHeaderForegroundSelection', props: styles },
+    { prefix: 'rowHeader',                       props: styles },
+    { prefix: 'rowHeaderForegroundSelection',    props: styles }
+];
+
+var defaultTheme = {
+    themeName: defaults.themeName
+};
+
+// Here we create the `defaults` theme by copying over the theme props,
+// which is a subset of all the props defined in defaults.js. The following
+// combines the above prefixes with their styles to get theme prop names; and
+// then copies those props from the defaults.js to create the `default` theme.
+module.exports.default = stylers.reduce(function(theme, styler) {
+    return styler.props.reduce(function(theme, prop) {
+        prop = styler.prefix + prop;
+        prop = prop.replace('ForegroundSelectionBackground', 'BackgroundSelection');
+        prop = prop[0].toLowerCase() + prop.substr(1);
+        theme[prop] = defaults[prop];
+        return theme;
+    }, theme);
+}, defaultTheme);