Add UI for mainline modules licenses.

Added a module licenses option that lives in Legal information settings. Clicking that option opens module licenses page, which displays every module by name, filtered to exclude modules without license files. Clicking a module in the list opens HTMLViewer. Created ModuleLicensesProvider, a new ContentProvider that serves as a redirect for the Uris sent to HTMLViewer so that they open asset files. In order to provide the redirect, the provider will write the license file to a file in Settings' cache directory when the license does not exist in the cache or is outdated. The provider then opens that cached file. Fixes: 135183006 Test: robotests Change-Id: I7d69da34780c8c4efb150d0c0411078c12bc80d8
2019-06-18 09:44:18 -07:00
parent 242ff568d1
commit 56a8c33c1b
15 changed files with 1239 additions and 0 deletions
--- a/src/com/android/settings/deviceinfo/legal/ModuleLicensePreference.java
+++ b/src/com/android/settings/deviceinfo/legal/ModuleLicensePreference.java
@@ -0,0 +1,69 @@
+/*
+ * Copyright (C) 2019 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.settings.deviceinfo.legal;
+
+import android.content.ActivityNotFoundException;
+import android.content.Context;
+import android.content.Intent;
+import android.content.pm.ModuleInfo;
+import android.util.Log;
+import android.widget.Toast;
+
+import androidx.preference.Preference;
+
+import com.android.settings.R;
+
+/**
+ * Preference in a list that represents a mainline module that has a licenses file.
+ */
+public class ModuleLicensePreference extends Preference {
+    private static final String TAG = "ModuleLicensePreference";
+    private final ModuleInfo mModule;
+
+    public ModuleLicensePreference(Context context, ModuleInfo module) {
+        super(context);
+        mModule = module;
+        setKey(module.getPackageName());
+        setTitle(module.getName());
+    }
+
+    @Override
+    protected void onClick() {
+        // Kick off external viewer due to WebView security restrictions (Settings cannot use
+        // WebView because it is UID 1000).
+        Intent intent = new Intent(Intent.ACTION_VIEW)
+                .setDataAndType(
+                        ModuleLicenseProvider.getUriForPackage(mModule.getPackageName()),
+                        ModuleLicenseProvider.LICENSE_FILE_MIME_TYPE)
+                .putExtra(Intent.EXTRA_TITLE, mModule.getName())
+                .addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION)
+                .addCategory(Intent.CATEGORY_DEFAULT)
+                .setPackage("com.android.htmlviewer");
+        try {
+            getContext().startActivity(intent);
+        } catch (ActivityNotFoundException e) {
+            Log.e(TAG, "Failed to find viewer", e);
+            showError();
+        }
+    }
+
+    private void showError() {
+        Toast.makeText(
+                getContext(), R.string.settings_license_activity_unavailable, Toast.LENGTH_LONG)
+                .show();
+    }
+}