Add full preview for the custom theme page

To have a consistent custom theme experience, I think user had to finish the custom theme flow(click the apply button in the naming page), so we don't support apply button for a undefined theme in the custom theme *full preview* page.
Video: https://drive.google.com/file/d/1oIGb5QTliCJYNEW6b6b9IttD8Mc8QJdE/view?usp=sharing

Test: Manually
Bug: 151285476
Change-Id: I1cad75f78b02c1dc87b55488b15ebdfbe85570a1

3 files changed, 34 insertions, 6 deletions

diff --git a/src/com/android/customization/picker/theme/CustomThemeNameFragment.java b/src/com/android/customization/picker/theme/CustomThemeNameFragment.java
index 1a702456..34115422 100644
--- a/src/com/android/customization/picker/theme/CustomThemeNameFragment.java
+++ b/src/com/android/customization/picker/theme/CustomThemeNameFragment.java
@@ -15,6 +15,12 @@
  */
 package com.android.customization.picker.theme;
 
+import static com.android.customization.picker.ViewOnlyFullPreviewActivity.SECTION_STYLE;
+import static com.android.customization.picker.theme.ThemeFullPreviewFragment.EXTRA_THEME_OPTION;
+import static com.android.customization.picker.theme.ThemeFullPreviewFragment.EXTRA_THEME_OPTION_TITLE;
+import static com.android.customization.picker.theme.ThemeFullPreviewFragment.EXTRA_WALLPAPER_INFO;
+
+import android.content.Intent;
 import android.os.Bundle;
 import android.text.TextUtils;
 import android.util.Log;
@@ -28,8 +34,10 @@ import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 
 import com.android.customization.model.theme.ThemeBundle.PreviewInfo;
+import com.android.customization.model.theme.custom.CustomTheme;
 import com.android.customization.module.CustomizationInjector;
 import com.android.customization.module.CustomizationPreferences;
+import com.android.customization.picker.ViewOnlyFullPreviewActivity;
 import com.android.customization.picker.WallpaperPreviewer;
 import com.android.wallpaper.R;
 import com.android.wallpaper.model.WallpaperInfo;
@@ -91,10 +99,10 @@ public class CustomThemeNameFragment extends CustomThemeStepFragment {
                 }, false);
 
         // Set theme option.
-        mThemeOptionPreviewer = new ThemeOptionPreviewer(
-                getLifecycle(),
-                getContext(),
-                view.findViewById(R.id.theme_preview_container));
+        ViewGroup previewContainer = view.findViewById(R.id.theme_preview_container);
+        previewContainer.setOnClickListener(v -> showFullPreview());
+        mThemeOptionPreviewer = new ThemeOptionPreviewer(getLifecycle(), getContext(),
+                previewContainer);
         PreviewInfo previewInfo = mCustomThemeManager.buildCustomThemePreviewInfo(getContext());
         mThemeOptionPreviewer.setPreviewInfo(previewInfo);
 
@@ -157,4 +165,15 @@ public class CustomThemeNameFragment extends CustomThemeStepFragment {
     public String getThemeName() {
         return mNameEditor.getText().toString();
     }
+
+    private void showFullPreview() {
+        CustomTheme themeToFullPreview = mCustomThemeManager.buildPartialCustomTheme(
+                getContext(), /* id= */ "", getThemeName());
+        Bundle bundle = new Bundle();
+        bundle.putParcelable(EXTRA_WALLPAPER_INFO, mCurrentHomeWallpaper);
+        bundle.putString(EXTRA_THEME_OPTION, themeToFullPreview.getSerializedPackages());
+        bundle.putString(EXTRA_THEME_OPTION_TITLE, themeToFullPreview.getTitle());
+        Intent intent = ViewOnlyFullPreviewActivity.newIntent(getContext(), SECTION_STYLE, bundle);
+        startActivity(intent);
+    }
 }
diff --git a/src/com/android/customization/picker/theme/ThemeFragment.java b/src/com/android/customization/picker/theme/ThemeFragment.java
index 32bab206..1f4917ed 100644
--- a/src/com/android/customization/picker/theme/ThemeFragment.java
+++ b/src/com/android/customization/picker/theme/ThemeFragment.java
@@ -18,6 +18,7 @@ package com.android.customization.picker.theme;
 import static android.app.Activity.RESULT_OK;
 
 import static com.android.customization.picker.ViewOnlyFullPreviewActivity.SECTION_STYLE;
+import static com.android.customization.picker.theme.ThemeFullPreviewFragment.EXTRA_CAN_APPLY_FROM_FULL_PREVIEW;
 import static com.android.customization.picker.theme.ThemeFullPreviewFragment.EXTRA_THEME_OPTION;
 import static com.android.customization.picker.theme.ThemeFullPreviewFragment.EXTRA_THEME_OPTION_TITLE;
 import static com.android.customization.picker.theme.ThemeFullPreviewFragment.EXTRA_WALLPAPER_INFO;
@@ -371,6 +372,7 @@ public class ThemeFragment extends AppbarFragment {
         bundle.putParcelable(EXTRA_WALLPAPER_INFO, mCurrentHomeWallpaper);
         bundle.putString(EXTRA_THEME_OPTION, mSelectedTheme.getSerializedPackages());
         bundle.putString(EXTRA_THEME_OPTION_TITLE, mSelectedTheme.getTitle());
+        bundle.putBoolean(EXTRA_CAN_APPLY_FROM_FULL_PREVIEW, true);
         Intent intent = ViewOnlyFullPreviewActivity.newIntent(getContext(), SECTION_STYLE, bundle);
         startActivityForResult(intent, FULL_PREVIEW_REQUEST_CODE);
     }
diff --git a/src/com/android/customization/picker/theme/ThemeFullPreviewFragment.java b/src/com/android/customization/picker/theme/ThemeFullPreviewFragment.java
index 77642d53..473f480a 100644
--- a/src/com/android/customization/picker/theme/ThemeFullPreviewFragment.java
+++ b/src/com/android/customization/picker/theme/ThemeFullPreviewFragment.java
@@ -56,9 +56,11 @@ public class ThemeFullPreviewFragment extends AppbarFragment {
     public static final String EXTRA_THEME_OPTION_TITLE = "theme_option_title";
     protected static final String EXTRA_THEME_OPTION = "theme_option";
     protected static final String EXTRA_WALLPAPER_INFO = "wallpaper_info";
+    protected static final String EXTRA_CAN_APPLY_FROM_FULL_PREVIEW = "can_apply";
 
     private WallpaperInfo mWallpaper;
     private ThemeBundle mThemeBundle;
+    private boolean mCanApplyFromFullPreview;
 
     /**
      * Returns a new {@link ThemeFullPreviewFragment} with the provided title and bundle arguments
@@ -77,6 +79,7 @@ public class ThemeFullPreviewFragment extends AppbarFragment {
     public void onCreate(@Nullable Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         mWallpaper = getArguments().getParcelable(EXTRA_WALLPAPER_INFO);
+        mCanApplyFromFullPreview = getArguments().getBoolean(EXTRA_CAN_APPLY_FROM_FULL_PREVIEW);
         CustomizationInjector injector = (CustomizationInjector) InjectorProvider.getInjector();
         ThemeBundleProvider themeProvider = new DefaultThemeProvider(
                 getContext(), injector.getCustomizationPreferences(getContext()));
@@ -136,8 +139,12 @@ public class ThemeFullPreviewFragment extends AppbarFragment {
 
     @Override
     protected void onBottomActionBarReady(BottomActionBar bottomActionBar) {
-        bottomActionBar.showActionsOnly(INFORMATION, APPLY);
-        bottomActionBar.setActionClickListener(APPLY, v -> finishActivityWithResultOk());
+        if (mCanApplyFromFullPreview) {
+            bottomActionBar.showActionsOnly(INFORMATION, APPLY);
+            bottomActionBar.setActionClickListener(APPLY, v -> finishActivityWithResultOk());
+        } else {
+            bottomActionBar.showActionsOnly(INFORMATION);
+        }
         ThemeInfoView themeInfoView = (ThemeInfoView) LayoutInflater.from(getContext()).inflate(
                 R.layout.theme_info_view, /* root= */ null);
         themeInfoView.populateThemeInfo(mThemeBundle);