1 files changed, 112 insertions, 0 deletions
diff --git a/src/org/cyanogenmod/trebuchet/home/HomeUtils.java b/src/org/cyanogenmod/trebuchet/home/HomeUtils.java
new file mode 100644
index 000000000..63bf5ff60
--- /dev/null
+++ b/src/org/cyanogenmod/trebuchet/home/HomeUtils.java
@@ -0,0 +1,112 @@
+/*
+ * Copyright (C) 2014 The CyanogenMod 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 org.cyanogenmod.trebuchet.home;
+
+import android.content.ComponentName;
+import android.content.Context;
+import android.content.pm.ApplicationInfo;
+import android.content.pm.PackageInfo;
+import android.content.pm.PackageManager;
+import android.content.pm.PackageManager.NameNotFoundException;
+import android.os.Bundle;
+import android.util.Log;
+import android.util.SparseArray;
+
+import com.android.launcher.home.Home;
+
+import java.util.List;
+
+public class HomeUtils {
+
+    private static final String TAG = "HomeUtils";
+
+    // FIXME For now for security reason we will only support known Home apps
+    private static final String[] WELL_KNOWN_HOME_APP_PKGS =
+            {
+                "org.cyanogenmod.launcher.home"
+            };
+
+
+    public static final SparseArray<ComponentName> getInstalledHomePackages(Context context) {
+        // A Home app should:
+        //   - declare the use of Home.PERMISSION_HOME_APP permission.
+        //   - define the home stub class through the Home.METADATA_HOME_STUB metadata
+        SparseArray<ComponentName> installedHomePackages = new SparseArray<ComponentName>();
+
+        PackageManager packageManager = context.getPackageManager();
+
+        List<PackageInfo> installedPackages = packageManager.getInstalledPackages(
+                PackageManager.GET_PERMISSIONS);
+        for (PackageInfo pkg : installedPackages) {
+            boolean hasHomeAppPermission = false;
+            if (pkg.requestedPermissions != null) {
+                for (String perm : pkg.requestedPermissions) {
+                    if (perm.equals(Home.PERMISSION_HOME_APP)) {
+                        hasHomeAppPermission = true;
+                        break;
+                    }
+                }
+            }
+            if (hasHomeAppPermission) {
+                try {
+                    ApplicationInfo appInfo = packageManager.getApplicationInfo(pkg.packageName,
+                            PackageManager.GET_META_DATA);
+                    Bundle metadata = appInfo.metaData;
+                    if (metadata != null && metadata.containsKey(Home.METADATA_HOME_STUB)) {
+                        String homeStub = metadata.getString(Home.METADATA_HOME_STUB);
+                        installedHomePackages.put(appInfo.uid,
+                                new ComponentName(pkg.packageName, homeStub));
+                    }
+                } catch (NameNotFoundException ex) {
+                    // Ignored. The package doesn't exists ¿?
+                }
+            }
+        }
+
+        // FIXME For now we only support known Home apps. Remove this checks when
+        // Trebuchet allows Home apps through the full Home Host Protocol
+        if (installedHomePackages.size() > 0) {
+            for (String pkg : WELL_KNOWN_HOME_APP_PKGS) {
+                int i = installedHomePackages.size() - 1;
+                boolean isWellKnownPkg = false;
+                for (; i >= 0; i--) {
+                    int key = installedHomePackages.keyAt(i);
+                    if (installedHomePackages.get(key).getPackageName().equals(pkg)) {
+                        isWellKnownPkg = true;
+                        break;
+                    }
+                }
+                if (!isWellKnownPkg) {
+                    installedHomePackages.removeAt(i);
+                }
+            }
+        }
+
+        return installedHomePackages;
+    }
+
+    public static Context createNewHomePackageContext(Context ctx, ComponentName pkg) {
+        // Create a new context package for the current user
+        try {
+            return ctx.createPackageContext(pkg.getPackageName(),
+                    Context.CONTEXT_IGNORE_SECURITY | Context.CONTEXT_INCLUDE_CODE);
+        } catch (NameNotFoundException ex) {
+            Log.e(TAG, "Failed to load a home package context. Package not found.", ex);
+        }
+        return null;
+    }
+}