From 8e5e4eedb25a4589342660b928935acca4375fc7 Mon Sep 17 00:00:00 2001
From: Angus Kong <shkong@google.com>
Date: Tue, 30 Jul 2013 11:36:00 -0700
Subject: Add LocalDataAdapter and wrappers.

1. FixedFirstDataAdapter wraps another adapter and add a data at the first
position.
2. FixedLastDataAdapter wraps another adapter and add a data at the last
position.
3. Make the LocalData interface more complete.
  - onFullScreen()
  - canSwipeInFullScreen()
  - getPath()
3. Add methods to the FilmStripView.DataAdapter to receive UI events.
  - onDataCentered()
  - onDataFullScreen()

Change-Id: I26d3a3b7facd0c451af43ce5fbbcab2baaaec427
---
 .../android/camera/data/FixedLastDataAdapter.java  | 127 +++++++++++++++++++++
 1 file changed, 127 insertions(+)
 create mode 100644 src/com/android/camera/data/FixedLastDataAdapter.java

(limited to 'src/com/android/camera/data/FixedLastDataAdapter.java')

diff --git a/src/com/android/camera/data/FixedLastDataAdapter.java b/src/com/android/camera/data/FixedLastDataAdapter.java
new file mode 100644
index 000000000..16c047d1a
--- /dev/null
+++ b/src/com/android/camera/data/FixedLastDataAdapter.java
@@ -0,0 +1,127 @@
+/*
+ * Copyright (C) 2013 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.camera.data;
+
+import android.content.Context;
+import android.net.Uri;
+import android.view.View;
+
+import com.android.camera.ui.FilmStripView;
+
+/**
+ * A {@link LocalDataAdapter} which puts a {@link LocalData} fixed at the last
+ * position. It's done by combining a {@link LocalData} and another
+ * {@link LocalDataAdapter}.
+ */
+public class FixedLastDataAdapter extends AbstractLocalDataAdapterWrapper {
+
+    private final LocalData mLastData;
+
+    /**
+     * Constructor.
+     *
+     * @param wrappedAdapter  The {@link LocalDataAdapter} to be wrapped.
+     * @param lastData       The {@link LocalData} to be placed at the last position.
+     */
+    public FixedLastDataAdapter(
+            LocalDataAdapter wrappedAdapter,
+            LocalData lastData) {
+        super(wrappedAdapter);
+        if (lastData == null) {
+            throw new AssertionError("data is null");
+        }
+        mLastData = lastData;
+    }
+
+    @Override
+    public void removeData(Context context, int dataID) {
+        if (dataID < mAdapter.getTotalNumber()) {
+            mAdapter.removeData(context, dataID);
+        }
+    }
+
+    @Override
+    public int findDataByContentUri(Uri uri) {
+        return mAdapter.findDataByContentUri(uri);
+    }
+
+    @Override
+    public int getTotalNumber() {
+        return mAdapter.getTotalNumber() + 1;
+    }
+
+    @Override
+    public View getView(Context context, int dataID) {
+        int totalNumber = mAdapter.getTotalNumber();
+
+        if (dataID < totalNumber) {
+            return mAdapter.getView(context, dataID);
+        } else if (dataID == totalNumber) {
+            return mLastData.getView(context,
+                    mSuggestedWidth, mSuggestedHeight, null);
+        }
+
+        return null;
+    }
+
+    @Override
+    public FilmStripView.ImageData getImageData(int dataID) {
+        int totalNumber = mAdapter.getTotalNumber();
+
+        if (dataID < totalNumber) {
+            return mAdapter.getImageData(dataID);
+        } else if (dataID == totalNumber) {
+            return mLastData;
+        }
+        return null;
+    }
+
+    @Override
+    public void onDataFullScreen(int dataID, boolean fullScreen) {
+        int totalNumber = mAdapter.getTotalNumber();
+
+        if (dataID < totalNumber) {
+            mAdapter.onDataFullScreen(dataID, fullScreen);
+        } else if (dataID == totalNumber) {
+            mLastData.onFullScreen(fullScreen);
+        }
+    }
+
+    @Override
+    public void onDataCentered(int dataID, boolean centered) {
+        int totalNumber = mAdapter.getTotalNumber();
+
+        if (dataID < totalNumber) {
+            mAdapter.onDataCentered(dataID, centered);
+        } else if (dataID == totalNumber) {
+            // TODO: notify the data
+        }
+    }
+
+    @Override
+    public boolean canSwipeInFullScreen(int dataID) {
+        int totalNumber = mAdapter.getTotalNumber();
+
+        if (dataID < totalNumber) {
+            return mAdapter.canSwipeInFullScreen(dataID);
+        } else if (dataID == totalNumber) {
+            return mLastData.canSwipeInFullScreen();
+        }
+        return false;
+    }
+}
+
-- 
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