Sync to ub-tv-dev at lost+android-o-preview-3android-n-iot-preview-4n-iot-preview-4

hash 550cbec17259717c5453f6be1eb05736ba10ef1d

Bug: 37849928
Test: tested on vendor branch
Change-Id: I82190481d2bcef2b89e78414b6b92ed97720749d
Merged-In: I4199ec04cacb4a78be58b85302a39d917658dc28

1 files changed, 83 insertions, 0 deletions

diff --git a/src/com/android/tv/dvr/ui/browse/DvrItemPresenter.java b/src/com/android/tv/dvr/ui/browse/DvrItemPresenter.java
new file mode 100644
index 00000000..317b6af3
--- /dev/null
+++ b/src/com/android/tv/dvr/ui/browse/DvrItemPresenter.java
@@ -0,0 +1,83 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.tv.dvr.ui.browse;
+
+import android.app.Activity;
+import android.support.annotation.CallSuper;
+import android.support.v17.leanback.widget.Presenter;
+import android.view.View;
+import android.view.View.OnClickListener;
+
+import com.android.tv.dvr.ui.DvrUiHelper;
+
+import java.util.HashSet;
+import java.util.Set;
+
+/**
+ * An abstract class to present DVR items in {@link RecordingCardView}, which is mainly used in
+ * {@link DvrBrowseFragment}. DVR items might include:
+ * {@link com.android.tv.dvr.data.ScheduledRecording},
+ * {@link com.android.tv.dvr.data.RecordedProgram}, and
+ * {@link com.android.tv.dvr.data.SeriesRecording}.
+ */
+public abstract class DvrItemPresenter extends Presenter {
+    private final Set<ViewHolder> mBoundViewHolders = new HashSet<>();
+    private final OnClickListener mOnClickListener = onCreateOnClickListener();
+
+    @Override
+    @CallSuper
+    public void onBindViewHolder(ViewHolder viewHolder, Object o) {
+        viewHolder.view.setTag(o);
+        viewHolder.view.setOnClickListener(mOnClickListener);
+        mBoundViewHolders.add(viewHolder);
+    }
+
+    @Override
+    @CallSuper
+    public void onUnbindViewHolder(ViewHolder viewHolder) {
+        mBoundViewHolders.remove(viewHolder);
+        viewHolder.view.setTag(null);
+        viewHolder.view.setOnClickListener(null);
+    }
+
+    /**
+     * Unbinds all bound view holders.
+     */
+    public void unbindAllViewHolders() {
+        // When browse fragments are destroyed, RecyclerView would not call presenters'
+        // onUnbindViewHolder(). We should handle it by ourselves to prevent resources leaks.
+        for (ViewHolder viewHolder : new HashSet<>(mBoundViewHolders)) {
+            onUnbindViewHolder(viewHolder);
+        }
+    }
+
+    /**
+     * Creates {@link OnClickListener} for DVR library's card views.
+     */
+    protected OnClickListener onCreateOnClickListener() {
+        return new OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                if (view instanceof RecordingCardView) {
+                    RecordingCardView v = (RecordingCardView) view;
+                    DvrUiHelper.startDetailsActivity((Activity) v.getContext(),
+                            v.getTag(), v.getImageView(), false);
+                }
+            }
+        };
+    }
+}
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