1 files changed, 105 insertions, 0 deletions
diff --git a/src/main/java/de/thedevstack/conversationsplus/ConversationsPlusApplication.java b/src/main/java/de/thedevstack/conversationsplus/ConversationsPlusApplication.java
new file mode 100644
index 00000000..4b11bb4a
--- /dev/null
+++ b/src/main/java/de/thedevstack/conversationsplus/ConversationsPlusApplication.java
@@ -0,0 +1,105 @@
+package de.thedevstack.conversationsplus;
+
+import android.app.Application;
+import android.content.Context;
+import android.content.pm.PackageManager;
+import android.preference.PreferenceManager;
+
+import java.io.File;
+
+import de.thedevstack.conversationsplus.utils.ImageUtil;
+
+import eu.siacs.conversations.R;
+import eu.siacs.conversations.persistance.FileBackend;
+import eu.siacs.conversations.utils.SerialSingleThreadExecutor;
+
+/**
+ * This class is used to provide static access to the applicationcontext.
+ */
+public class ConversationsPlusApplication extends Application {
+    /**
+     * Application instance for static access
+     */
+    private static ConversationsPlusApplication instance;
+
+    private final SerialSingleThreadExecutor mFileAddingExecutor = new SerialSingleThreadExecutor();
+    private final SerialSingleThreadExecutor mDatabaseExecutor = new SerialSingleThreadExecutor();
+
+    /**
+     * Initializes the application and saves its instance.
+     */
+    public void onCreate(){
+        super.onCreate();
+        ConversationsPlusApplication.instance = this;
+        ConversationsPlusPreferences.init(PreferenceManager.getDefaultSharedPreferences(getAppContext()));
+        ImageUtil.initBitmapCache();
+        FileBackend.init();
+    }
+
+    /**
+     * Returns the instance of the application
+     * @return this application instance
+     */
+    public static ConversationsPlusApplication getInstance() {
+        return ConversationsPlusApplication.instance;
+    }
+
+    public static void executeFileAdding(Runnable r) {
+        getInstance().mFileAddingExecutor.execute(r);
+    }
+
+    public static void executeDatabaseOperation(Runnable r) {
+        getInstance().mDatabaseExecutor.execute(r);
+    }
+
+    /**
+     * Returns the application's context.
+     * @return Context the application's context
+     */
+    public static Context getAppContext() {
+        return ConversationsPlusApplication.instance.getApplicationContext();
+    }
+
+    /**
+     * Returns the application's private data directory.
+     * @return File the application's private data dir
+     */
+    public static File getPrivateFilesDir() {
+        return ConversationsPlusApplication.instance.getFilesDir();
+    }
+
+    /**
+     * Returns the version of the application.
+     * @see android.content.pm.PackageInfo#versionName
+     * @return a string representation of the version stored in packageInfo
+     */
+    public static String getVersion() {
+        final String packageName = ConversationsPlusApplication.getAppContext().getPackageName();
+        if (packageName != null) {
+            try {
+                return ConversationsPlusApplication.getAppContext().getPackageManager().getPackageInfo(packageName, 0).versionName;
+            } catch (final PackageManager.NameNotFoundException e) {
+                return "unknown";
+            }
+        } else {
+            return "unknown";
+        }
+    }
+
+    /**
+     * Returns the application's name.
+     * @return the name as it is defined in R.string.app_name
+     */
+    public static String getName() {
+        return ConversationsPlusApplication.getAppContext().getString(R.string.app_name);
+    }
+
+    /**
+     * Returns the name and the version of this application.
+     * @see #getName() and #getVersion
+     * @return a concatination of name and version with a whitespace in between
+     */
+    public static String getNameAndVersion() {
+        return getName() + " " + getVersion();
+    }
+}