Extract action button utils/callback into classes

This splits the logic in `ActionButtonUtils` and
`DefaultActionButtonCallback` into multiple specialized classes to
reduce duplication figuring out which button/action to use while at the
same time making each individual button to have a single responsability.

1 files changed, 63 insertions, 0 deletions

diff --git a/app/src/main/java/de/danoeh/antennapod/adapter/actionbutton/PlayActionButton.java b/app/src/main/java/de/danoeh/antennapod/adapter/actionbutton/PlayActionButton.java
new file mode 100644
index 000000000..3992c7240
--- /dev/null
+++ b/app/src/main/java/de/danoeh/antennapod/adapter/actionbutton/PlayActionButton.java
@@ -0,0 +1,63 @@
+package de.danoeh.antennapod.adapter.actionbutton;
+
+import android.content.Context;
+import android.support.annotation.AttrRes;
+import android.support.annotation.StringRes;
+
+import de.danoeh.antennapod.R;
+import de.danoeh.antennapod.core.feed.FeedItem;
+import de.danoeh.antennapod.core.feed.FeedMedia;
+import de.danoeh.antennapod.core.storage.DBTasks;
+import de.danoeh.antennapod.core.util.IntentUtils;
+import de.danoeh.antennapod.core.util.playback.PlaybackServiceStarter;
+
+import static de.danoeh.antennapod.core.service.playback.PlaybackService.ACTION_PAUSE_PLAY_CURRENT_EPISODE;
+import static de.danoeh.antennapod.core.service.playback.PlaybackService.ACTION_RESUME_PLAY_CURRENT_EPISODE;
+
+class PlayActionButton extends ItemActionButton {
+
+    PlayActionButton(FeedItem item) {
+        super(item);
+    }
+
+    @Override
+    @StringRes
+    public int getLabel() {
+        return R.string.play_label;
+    }
+
+    @Override
+    @AttrRes
+    public int getDrawable() {
+        FeedMedia media = item.getMedia();
+        if (media != null && media.isCurrentlyPlaying()) {
+            return R.attr.av_pause;
+        } else {
+            return R.attr.av_play;
+        }
+    }
+
+    @Override
+    public void onClick(Context context) {
+        FeedMedia media = item.getMedia();
+        if (media == null) {
+            return;
+        }
+
+        if (media.isPlaying()) {
+            togglePlayPause(context, media);
+        } else {
+            DBTasks.playMedia(context, media, false, true, false);
+        }
+    }
+
+    private void togglePlayPause(Context context, FeedMedia media) {
+        new PlaybackServiceStarter(context, media)
+                .startWhenPrepared(true)
+                .shouldStream(false)
+                .start();
+
+        String pauseOrResume = media.isCurrentlyPlaying() ? ACTION_PAUSE_PLAY_CURRENT_EPISODE : ACTION_RESUME_PLAY_CURRENT_EPISODE;
+        IntentUtils.sendLocalBroadcast(context, pauseOrResume);
+    }
+}