Add activites content provider

code/ContextAnalyser/AndroidManifest.xml

@@ -20,6 +20,9 @@
             android:authorities="uk.co.md87.android.contextanalyser.journeyscontentprovider"
             android:readPermission="uk.co.md87.android.contextanalyser.READ_JOURNEYS"
             android:writePermission="uk.co.md87.android.contextanalyser.WRITE_JOURNEYS"/>
+
+        <provider android:name="uk.co.md87.android.contextanalyser.ActivitiesContentProvider"
+            android:authorities="uk.co.md87.android.contextanalyser.activitiescontentprovider"/>
     </application>
 
     <permission-group android:description="@string/permgroupdesc"

code/ContextAnalyser/src/uk/co/md87/android/contextanalyser/ActivitiesContentProvider.java

@@ -0,0 +1,145 @@
+/*
+ * Copyright (c) 2009-2010 Chris Smith
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+package uk.co.md87.android.contextanalyser;
+
+import android.content.ComponentName;
+import android.content.ContentProvider;
+import android.content.ContentUris;
+import android.content.ContentValues;
+import android.content.Context;
+import android.content.Intent;
+import android.content.ServiceConnection;
+import android.content.UriMatcher;
+import android.database.Cursor;
+import android.database.MatrixCursor;
+import android.net.Uri;
+import android.os.IBinder;
+import android.os.RemoteException;
+
+import uk.co.md87.android.common.model.Place;
+import uk.co.md87.android.contextanalyser.rpc.ContextAnalyserBinder;
+
+/**
+ * A content provider for activities.
+ * 
+ * @author chris
+ */
+public class ActivitiesContentProvider extends ContentProvider {
+
+    public static final String AUTHORITY
+            = "uk.co.md87.android.contextanalyser.activitiescontentprovider";
+
+    private static final int CODE_CURRENT = 1;
+    private static final UriMatcher URI_MATCHER;
+
+    static {
+        URI_MATCHER = new UriMatcher(UriMatcher.NO_MATCH);
+        URI_MATCHER.addURI(AUTHORITY, "current", CODE_CURRENT);
+    }
+    
+    private ContextAnalyserBinder service;
+
+    private final ServiceConnection connection = new ServiceConnection() {
+
+        public void onServiceConnected(ComponentName arg0, IBinder arg1) {
+            service = ContextAnalyserBinder.Stub.asInterface(arg1);
+        }
+
+        public void onServiceDisconnected(ComponentName arg0) {
+            service = null;
+            onCreate();
+        }
+    };
+
+    /** {@inheritDoc} */
+    @Override
+    public boolean onCreate() {
+        getContext().bindService(new Intent(getContext(),
+                ContextAnalyserService.class), connection, Context.BIND_AUTO_CREATE);
+        return true;
+    }
+
+    /** {@inheritDoc} */
+    @Override
+    public Cursor query(final Uri uri, final String[] projection,
+            final String selection, final String[] selectionArgs,
+            final String sortOrder) {
+        if (URI_MATCHER.match(uri) != CODE_CURRENT) {
+            throw new IllegalArgumentException("Unknown URI " + uri);
+        }
+
+        if (service == null) {
+            throw new IllegalStateException("Unable to bind to service");
+        }
+
+        try {
+            final MatrixCursor cursor = new MatrixCursor(new String[]{"activity"}, 1);
+            cursor.addRow(new Object[]{service.getActivity()});
+            return cursor;
+        } catch (RemoteException ex) {
+            throw new RuntimeException("Unable to retrieve activity", ex);
+        }
+    }
+
+    /** {@inheritDoc} */
+    @Override
+    public String getType(final Uri uri) {
+        if (URI_MATCHER.match(uri) != CODE_CURRENT) {
+            throw new IllegalArgumentException("Unknown URI " + uri);
+        }
+
+        return "vnd.android.cursor." + (ContentUris.parseId(uri) == -1 ? "dir" : "item")
+                + Place.CONTENT_TYPE;
+    }
+
+    /** {@inheritDoc} */
+    @Override
+    public Uri insert(final Uri uri, final ContentValues values) {
+        if (URI_MATCHER.match(uri) != CODE_CURRENT) {
+            throw new IllegalArgumentException("Unknown URI " + uri);
+        }
+
+        throw new UnsupportedOperationException("Cannot insert");
+    }
+
+    /** {@inheritDoc} */
+    @Override
+    public int delete(Uri uri, String where, String[] whereArgs) {
+        if (URI_MATCHER.match(uri) != CODE_CURRENT) {
+            throw new IllegalArgumentException("Unknown URI " + uri);
+        }
+
+        throw new UnsupportedOperationException("Cannot delete");
+    }
+
+    /** {@inheritDoc} */
+    @Override
+    public int update(Uri uri, ContentValues values, String where, String[] whereArgs) {
+        if (URI_MATCHER.match(uri) != CODE_CURRENT) {
+            throw new IllegalArgumentException("Unknown URI " + uri);
+        }
+
+        throw new UnsupportedOperationException("Cannot update");
+    }
+
+}