Reworked cast button handling

1 files changed, 120 insertions, 0 deletions

diff --git a/core/src/play/java/de/danoeh/antennapod/core/cast/CastButtonVisibilityManager.java b/core/src/play/java/de/danoeh/antennapod/core/cast/CastButtonVisibilityManager.java
new file mode 100644
index 000000000..527a652e3
--- /dev/null
+++ b/core/src/play/java/de/danoeh/antennapod/core/cast/CastButtonVisibilityManager.java
@@ -0,0 +1,120 @@
+package de.danoeh.antennapod.core.cast;
+
+import android.util.Log;
+import android.view.Menu;
+import android.view.MenuItem;
+import androidx.core.view.MenuItemCompat;
+import de.danoeh.antennapod.core.R;
+
+public class CastButtonVisibilityManager {
+    private static final String TAG = "CastBtnVisibilityMgr";
+    private final CastManager castManager;
+    private volatile boolean prefEnabled = false;
+    private volatile boolean viewRequested = false;
+    private volatile boolean resumed = false;
+    private volatile boolean connected = false;
+    private volatile int showAsAction = MenuItem.SHOW_AS_ACTION_IF_ROOM;
+    private Menu menu;
+    public SwitchableMediaRouteActionProvider mediaRouteActionProvider;
+
+    public CastButtonVisibilityManager(CastManager castManager) {
+        this.castManager = castManager;
+    }
+
+    public synchronized void setPrefEnabled(boolean newValue) {
+        if (prefEnabled != newValue && resumed && (viewRequested || connected)) {
+            if (newValue) {
+                castManager.incrementUiCounter();
+            } else {
+                castManager.decrementUiCounter();
+            }
+        }
+        prefEnabled = newValue;
+        if (mediaRouteActionProvider != null) {
+            mediaRouteActionProvider.setEnabled(prefEnabled && (viewRequested || connected));
+        }
+    }
+
+    public synchronized void setResumed(boolean newValue) {
+        if (resumed == newValue) {
+            Log.e(TAG, "resumed should never change to the same value");
+            return;
+        }
+        resumed = newValue;
+        if (prefEnabled && (viewRequested || connected)) {
+            if (resumed) {
+                castManager.incrementUiCounter();
+            } else {
+                castManager.decrementUiCounter();
+            }
+        }
+    }
+
+    public synchronized void setViewRequested(boolean newValue) {
+        if (viewRequested != newValue && resumed && prefEnabled && !connected) {
+            if (newValue) {
+                castManager.incrementUiCounter();
+            } else {
+                castManager.decrementUiCounter();
+            }
+        }
+        viewRequested = newValue;
+        if (mediaRouteActionProvider != null) {
+            mediaRouteActionProvider.setEnabled(prefEnabled && (viewRequested || connected));
+        }
+    }
+
+    public synchronized void setConnected(boolean newValue) {
+        if (connected != newValue && resumed && prefEnabled && !prefEnabled) {
+            if (newValue) {
+                castManager.incrementUiCounter();
+            } else {
+                castManager.decrementUiCounter();
+            }
+        }
+        connected = newValue;
+        if (mediaRouteActionProvider != null) {
+            mediaRouteActionProvider.setEnabled(prefEnabled && (viewRequested || connected));
+        }
+    }
+
+    public synchronized boolean shouldEnable() {
+        return prefEnabled && viewRequested;
+    }
+
+    public void setMenu(Menu menu) {
+        setViewRequested(false);
+        showAsAction = MenuItem.SHOW_AS_ACTION_IF_ROOM;
+        this.menu = menu;
+        setShowAsAction();
+    }
+
+    public void requestCastButton(int showAsAction) {
+        setViewRequested(true);
+        this.showAsAction = showAsAction;
+        setShowAsAction();
+    }
+
+    public void onConnected() {
+        setConnected(true);
+        setShowAsAction();
+    }
+
+    public void onDisconnected() {
+        setConnected(false);
+        setShowAsAction();
+    }
+
+    private void setShowAsAction() {
+        if (menu == null) {
+            Log.d(TAG, "setShowAsAction() without a menu");
+            return;
+        }
+        MenuItem item = menu.findItem(R.id.media_route_menu_item);
+        if (item == null) {
+            Log.e(TAG, "setShowAsAction(), but cast button not inflated");
+            return;
+        }
+        MenuItemCompat.setShowAsAction(item, connected ? MenuItem.SHOW_AS_ACTION_ALWAYS : showAsAction);
+    }
+}