Bug 1243558 - Add UrlAnnotations.getScreenshots method. r=sebastian

MozReview-Commit-ID: GOjliERct95

--HG--
extra : rebase_source : f5a41d08d6d320a4f8ef8e39030faaf36ab3cb65

mobile/android/base/java/org/mozilla/gecko/db/BrowserContract.java

@@ -512,6 +512,17 @@ public class BrowserContract {
         public static final String VALUE = "value";
         public static final String SYNC_STATUS = "sync_status";
 
+        public enum Key {
+            // We use a parameter, rather than name(), as defensive coding: we can't let the
+            // enum name change because we've already stored values into the DB.
+            SCREENSHOT ("screenshot");
+
+            private final String dbValue;
+
+            Key(final String dbValue) { this.dbValue = dbValue; }
+            public String getDbValue() { return dbValue; }
+        }
+
         public enum SyncStatus {
             // We use a parameter, rather than ordinal(), as defensive coding: we can't let the
             // ordinal values change because we've already stored values into the DB.

mobile/android/base/java/org/mozilla/gecko/db/LocalUrlAnnotations.java

@@ -6,8 +6,13 @@ package org.mozilla.gecko.db;
 
 import android.content.ContentResolver;
 import android.content.ContentValues;
+import android.database.Cursor;
 import android.net.Uri;
+import android.support.annotation.NonNull;
+import android.support.annotation.Nullable;
+import org.json.JSONObject;
 import org.mozilla.gecko.annotation.RobocopTarget;
+import org.mozilla.gecko.db.BrowserContract.UrlAnnotations.Key;
 
 public class LocalUrlAnnotations implements UrlAnnotations {
     private Uri urlAnnotationsTableWithProfile;
@@ -28,4 +33,26 @@ public class LocalUrlAnnotations implements UrlAnnotations {
         values.put(BrowserContract.UrlAnnotations.DATE_MODIFIED, creationTime);
         cr.insert(urlAnnotationsTableWithProfile, values);
     }
+
+    private Cursor queryByKey(final ContentResolver cr, @NonNull final Key key, @Nullable final String[] projections,
+                @Nullable final String sortOrder) {
+        return cr.query(urlAnnotationsTableWithProfile,
+                projections,
+                BrowserContract.UrlAnnotations.KEY + " = ?", new String[] { key.getDbValue() },
+                sortOrder);
+    }
+
+    @Override
+    public Cursor getScreenshots(ContentResolver cr) {
+        return queryByKey(cr,
+                Key.SCREENSHOT,
+                new String[] {
+                        BrowserContract.UrlAnnotations._ID,
+                        BrowserContract.UrlAnnotations.URL,
+                        BrowserContract.UrlAnnotations.KEY,
+                        BrowserContract.UrlAnnotations.VALUE,
+                        BrowserContract.UrlAnnotations.DATE_CREATED,
+                },
+                BrowserContract.UrlAnnotations.DATE_CREATED + " DESC");
+    }
 }

mobile/android/base/java/org/mozilla/gecko/db/StubBrowserDB.java

@@ -153,6 +153,9 @@ class StubTabsAccessor implements TabsAccessor {
 class StubUrlAnnotations implements UrlAnnotations {
     @Override
     public void insertAnnotation(ContentResolver cr, String url, String key, String value) {}
+
+    @Override
+    public Cursor getScreenshots(ContentResolver cr) { return null; }
 }
 
 /*

mobile/android/base/java/org/mozilla/gecko/db/UrlAnnotations.java

@@ -5,8 +5,10 @@
 package org.mozilla.gecko.db;
 
 import android.content.ContentResolver;
+import android.database.Cursor;
 import org.mozilla.gecko.annotation.RobocopTarget;
 
 public interface UrlAnnotations {
     @RobocopTarget void insertAnnotation(ContentResolver cr, String url, String key, String value);
+    Cursor getScreenshots(ContentResolver cr);
 }