1 files changed, 141 insertions, 0 deletions
diff --git a/app/src/main/java/com/camilstaps/rushhour/util/SystemUiHiderHoneycomb.java b/app/src/main/java/com/camilstaps/rushhour/util/SystemUiHiderHoneycomb.java
new file mode 100644
index 0000000..d689923
--- /dev/null
+++ b/app/src/main/java/com/camilstaps/rushhour/util/SystemUiHiderHoneycomb.java
@@ -0,0 +1,141 @@
+package com.camilstaps.rushhour.util;
+
+import android.annotation.TargetApi;
+import android.app.Activity;
+import android.os.Build;
+import android.view.View;
+import android.view.WindowManager;
+
+/**
+ * An API 11+ implementation of {@link SystemUiHider}. Uses APIs available in
+ * Honeycomb and later (specifically {@link View#setSystemUiVisibility(int)}) to
+ * show and hide the system UI.
+ */
+@TargetApi(Build.VERSION_CODES.HONEYCOMB)
+public class SystemUiHiderHoneycomb extends SystemUiHiderBase {
+    /**
+     * Flags for {@link View#setSystemUiVisibility(int)} to use when showing the
+     * system UI.
+     */
+    private int mShowFlags;
+
+    /**
+     * Flags for {@link View#setSystemUiVisibility(int)} to use when hiding the
+     * system UI.
+     */
+    private int mHideFlags;
+
+    /**
+     * Flags to test against the first parameter in
+     * {@link android.view.View.OnSystemUiVisibilityChangeListener#onSystemUiVisibilityChange(int)}
+     * to determine the system UI visibility state.
+     */
+    private int mTestFlags;
+
+    /**
+     * Whether or not the system UI is currently visible. This is cached from
+     * {@link android.view.View.OnSystemUiVisibilityChangeListener}.
+     */
+    private boolean mVisible = true;
+
+    /**
+     * Constructor not intended to be called by clients. Use
+     * {@link SystemUiHider#getInstance} to obtain an instance.
+     */
+    protected SystemUiHiderHoneycomb(Activity activity, View anchorView, int flags) {
+        super(activity, anchorView, flags);
+
+        mShowFlags = View.SYSTEM_UI_FLAG_VISIBLE;
+        mHideFlags = View.SYSTEM_UI_FLAG_LOW_PROFILE;
+        mTestFlags = View.SYSTEM_UI_FLAG_LOW_PROFILE;
+
+        if ((mFlags & FLAG_FULLSCREEN) != 0) {
+            // If the client requested fullscreen, add flags relevant to hiding
+            // the status bar. Note that some of these constants are new as of
+            // API 16 (Jelly Bean). It is safe to use them, as they are inlined
+            // at compile-time and do nothing on pre-Jelly Bean devices.
+            mShowFlags |= View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN;
+            mHideFlags |= View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
+                    | View.SYSTEM_UI_FLAG_FULLSCREEN;
+        }
+
+        if ((mFlags & FLAG_HIDE_NAVIGATION) != 0) {
+            // If the client requested hiding navigation, add relevant flags.
+            mShowFlags |= View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION;
+            mHideFlags |= View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
+                    | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION;
+            mTestFlags |= View.SYSTEM_UI_FLAG_HIDE_NAVIGATION;
+        }
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    public void setup() {
+        mAnchorView.setOnSystemUiVisibilityChangeListener(mSystemUiVisibilityChangeListener);
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    public void hide() {
+        mAnchorView.setSystemUiVisibility(mHideFlags);
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    public void show() {
+        mAnchorView.setSystemUiVisibility(mShowFlags);
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    public boolean isVisible() {
+        return mVisible;
+    }
+
+    private View.OnSystemUiVisibilityChangeListener mSystemUiVisibilityChangeListener
+            = new View.OnSystemUiVisibilityChangeListener() {
+        @Override
+        public void onSystemUiVisibilityChange(int vis) {
+            // Test against mTestFlags to see if the system UI is visible.
+            if ((vis & mTestFlags) != 0) {
+                if (Build.VERSION.SDK_INT < Build.VERSION_CODES.JELLY_BEAN) {
+                    // Pre-Jelly Bean, we must manually hide the action bar
+                    // and use the old window flags API.
+                    mActivity.getActionBar().hide();
+                    mActivity.getWindow().setFlags(
+                            WindowManager.LayoutParams.FLAG_FULLSCREEN,
+                            WindowManager.LayoutParams.FLAG_FULLSCREEN);
+                }
+
+                // Trigger the registered listener and cache the visibility
+                // state.
+                mOnVisibilityChangeListener.onVisibilityChange(false);
+                mVisible = false;
+
+            } else {
+                mAnchorView.setSystemUiVisibility(mShowFlags);
+                if (Build.VERSION.SDK_INT < Build.VERSION_CODES.JELLY_BEAN) {
+                    // Pre-Jelly Bean, we must manually show the action bar
+                    // and use the old window flags API.
+                    mActivity.getActionBar().show();
+                    mActivity.getWindow().setFlags(
+                            0,
+                            WindowManager.LayoutParams.FLAG_FULLSCREEN);
+                }
+
+                // Trigger the registered listener and cache the visibility
+                // state.
+                mOnVisibilityChangeListener.onVisibilityChange(true);
+                mVisible = true;
+            }
+        }
+    };
+}