[SuwLib] Add isLightTheme for strings

Add isLightTheme method to be able to directly tell whether a string
represents a light or dark theme.

Change-Id: Ib49cdcbb9047e235189a451b42f20b5cba5eb42a

1 files changed, 12 insertions, 0 deletions

diff --git a/library/main/src/com/android/setupwizardlib/util/WizardManagerHelper.java b/library/main/src/com/android/setupwizardlib/util/WizardManagerHelper.java
index d203ef6..183015f 100644
--- a/library/main/src/com/android/setupwizardlib/util/WizardManagerHelper.java
+++ b/library/main/src/com/android/setupwizardlib/util/WizardManagerHelper.java
@@ -195,6 +195,18 @@ public class WizardManagerHelper {
      */
     public static boolean isLightTheme(Intent intent, boolean def) {
         final String theme = intent.getStringExtra(EXTRA_THEME);
+        return isLightTheme(theme, def);
+    }
+
+    /**
+     * Checks whether {@code theme} represents a light or dark theme. If the theme specified is
+     * unknown, the value def will be returned.
+     *
+     * @param theme The theme as specified from an intent sent from setup wizard.
+     * @param def The default value if the theme is not known.
+     * @return True if {@code theme} represents a light theme.
+     */
+    public static boolean isLightTheme(String theme, boolean def) {
         if (THEME_HOLO_LIGHT.equals(theme) || THEME_MATERIAL_LIGHT.equals(theme)
                 || THEME_MATERIAL_BLUE_LIGHT.equals(theme)) {
             return true;