[LivePicker 2/n] Add LiveWallpaper preview support

Create a new LivePreviewFragment with the same UI and
functionality of Android's LivePicker.

Note that there's still redundancy between
ImagePreviewFragment and LivePreviewFragment, follow up
CLs will clean this up and share as much as possible.

Still missing is support for delete and settings action
buttons. The new LivePreviewFragment won't be hooked up
until all the functionality is implemented.

Bug: 141391722
Change-Id: I859f9122c368c01575c23f73a80ffdb519ef0e71
diff --git a/src/com/android/wallpaper/picker/ImagePreviewFragment.java b/src/com/android/wallpaper/picker/ImagePreviewFragment.java
index d0b0fa5..e514075 100755
--- a/src/com/android/wallpaper/picker/ImagePreviewFragment.java
+++ b/src/com/android/wallpaper/picker/ImagePreviewFragment.java
@@ -21,7 +21,6 @@
 import android.animation.AnimatorListenerAdapter;
 import android.app.Activity;
 import android.content.Context;
-import android.content.res.TypedArray;
 import android.graphics.Bitmap;
 import android.graphics.Bitmap.Config;
 import android.graphics.Color;
@@ -34,6 +33,7 @@
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
+import android.widget.Button;
 import android.widget.ImageView;
 import android.widget.TextView;
 
@@ -58,7 +58,7 @@
 import java.util.List;
 
 /**
- * Fragment which displays the UI for previewing an individual wallpaper and its attribution
+ * Fragment which displays the UI for previewing an individual static wallpaper and its attribution
  * information.
  */
 public class ImagePreviewFragment extends PreviewFragment {
@@ -70,6 +70,9 @@
     private TextView mAttributionTitle;
     private TextView mAttributionSubtitle1;
     private TextView mAttributionSubtitle2;
+    private Button mExploreButton;
+    private Button mSetWallpaperButton;
+
     private Point mDefaultCropSurfaceSize;
     private Point mScreenSize;
     private Point mRawWallpaperSize; // Native size of wallpaper image.
@@ -94,13 +97,6 @@
         return fragment;
     }
 
-    private static int getAttrColor(Context context, int attr) {
-        TypedArray ta = context.obtainStyledAttributes(new int[]{attr});
-        int colorAccent = ta.getColor(0, 0);
-        ta.recycle();
-        return colorAccent;
-    }
-
     @Override
     public void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
@@ -109,7 +105,7 @@
 
     @Override
     protected int getLayoutResId() {
-        return R.layout.fragment_preview;
+        return R.layout.fragment_image_preview;
     }
 
     @Override
@@ -118,16 +114,6 @@
     }
 
     @Override
-    protected int getSetWallpaperButtonResId() {
-        return R.id.preview_attribution_pane_set_wallpaper_button;
-    }
-
-    @Override
-    protected int getExploreButtonResId() {
-        return R.id.preview_attribution_pane_explore_button;
-    }
-
-    @Override
     public View onCreateView(LayoutInflater inflater, ViewGroup container,
                              Bundle savedInstanceState) {
         View view = super.onCreateView(inflater, container, savedInstanceState);
@@ -141,6 +127,8 @@
         mAttributionTitle = view.findViewById(R.id.preview_attribution_pane_title);
         mAttributionSubtitle1 = view.findViewById(R.id.preview_attribution_pane_subtitle1);
         mAttributionSubtitle2 = view.findViewById(R.id.preview_attribution_pane_subtitle2);
+        mExploreButton = view.findViewById(R.id.preview_attribution_pane_explore_button);
+        mSetWallpaperButton = view.findViewById(R.id.preview_attribution_pane_set_wallpaper_button);
 
         mLowResImageView = view.findViewById(R.id.low_res_image);
         mSpacer = view.findViewById(R.id.spacer);
@@ -183,7 +171,12 @@
         return view;
     }
 
-    protected void setUpLoadingIndicator() {
+    @Override
+    protected void setUpBottomSheetView(ViewGroup bottomSheet) {
+        // Nothing needed here.
+    }
+
+    private void setUpLoadingIndicator() {
         Context context = requireContext();
         mProgressDrawable = new MaterialProgressDrawable(context.getApplicationContext(),
                 mLoadingIndicator);
@@ -211,20 +204,6 @@
         }, 500);
     }
 
-    protected int getDeviceDefaultTheme() {
-        return android.R.style.Theme_DeviceDefault;
-    }
-
-    @Override
-    public void onSet(int destination) {
-        setCurrentWallpaper(destination);
-    }
-
-    @Override
-    public void onClickTryAgain(@Destination int wallpaperDestination) {
-        setCurrentWallpaper(wallpaperDestination);
-    }
-
     @Override
     public void onClickOk() {
         FragmentActivity activity = getActivity();
@@ -252,7 +231,7 @@
 
     @Override
     protected void setBottomSheetContentAlpha(float alpha) {
-        super.setBottomSheetContentAlpha(alpha);
+        mExploreButton.setAlpha(alpha);
         mAttributionTitle.setAlpha(alpha);
         mAttributionSubtitle1.setAlpha(alpha);
         mAttributionSubtitle2.setAlpha(alpha);
@@ -278,9 +257,9 @@
             mAttributionSubtitle2.setText(attributions.get(2));
         }
 
-        setUpSetWallpaperButton();
+        setUpSetWallpaperButton(mSetWallpaperButton);
 
-        setUpExploreButton();
+        setUpExploreButton(mExploreButton);
 
         if (mExploreButton.getVisibility() == View.VISIBLE
                 && mSetWallpaperButton.getVisibility() == View.VISIBLE) {