1 files changed, 149 insertions, 0 deletions
diff --git a/src/com/android/gallery3d/filtershow/data/UserPresetsManager.java b/src/com/android/gallery3d/filtershow/data/UserPresetsManager.java
new file mode 100644
index 000000000..114cd3ebc
--- /dev/null
+++ b/src/com/android/gallery3d/filtershow/data/UserPresetsManager.java
@@ -0,0 +1,149 @@
+package com.android.gallery3d.filtershow.data;
+
+import android.os.Handler;
+import android.os.HandlerThread;
+import android.os.Message;
+import com.android.gallery3d.R;
+import com.android.gallery3d.filtershow.FilterShowActivity;
+import com.android.gallery3d.filtershow.filters.FilterUserPresetRepresentation;
+import com.android.gallery3d.filtershow.pipeline.ImagePreset;
+
+import java.util.ArrayList;
+
+public class UserPresetsManager implements Handler.Callback {
+
+    private static final String LOGTAG = "UserPresetsManager";
+
+    private FilterShowActivity mActivity;
+    private HandlerThread mHandlerThread = null;
+    private Handler mProcessingHandler = null;
+    private FilterStackSource mUserPresets;
+
+    private static final int LOAD = 1;
+    private static final int LOAD_RESULT = 2;
+    private static final int SAVE = 3;
+    private static final int DELETE = 4;
+    private static final int UPDATE = 5;
+
+    private ArrayList<FilterUserPresetRepresentation> mRepresentations;
+
+    private final Handler mResultHandler = new Handler() {
+        @Override
+        public void handleMessage(Message msg) {
+            switch (msg.what) {
+                case LOAD_RESULT:
+                    resultLoad(msg);
+                    break;
+            }
+        }
+    };
+
+    @Override
+    public boolean handleMessage(Message msg) {
+        switch (msg.what) {
+            case LOAD:
+                processLoad();
+                return true;
+            case SAVE:
+                processSave(msg);
+                return true;
+            case DELETE:
+                processDelete(msg);
+                return true;
+            case UPDATE:
+                processUpdate(msg);
+                return true;
+        }
+        return false;
+    }
+
+    public UserPresetsManager(FilterShowActivity context) {
+        mActivity = context;
+        mHandlerThread = new HandlerThread(LOGTAG,
+                android.os.Process.THREAD_PRIORITY_BACKGROUND);
+        mHandlerThread.start();
+        mProcessingHandler = new Handler(mHandlerThread.getLooper(), this);
+        mUserPresets = new FilterStackSource(mActivity);
+        mUserPresets.open();
+    }
+
+    public ArrayList<FilterUserPresetRepresentation> getRepresentations() {
+        return mRepresentations;
+    }
+
+    public void load() {
+        Message msg = mProcessingHandler.obtainMessage(LOAD);
+        mProcessingHandler.sendMessage(msg);
+    }
+
+    public void close() {
+        mUserPresets.close();
+        mHandlerThread.quit();
+    }
+
+    static class SaveOperation {
+        String json;
+        String name;
+    }
+
+    public void save(ImagePreset preset) {
+        Message msg = mProcessingHandler.obtainMessage(SAVE);
+        SaveOperation op = new SaveOperation();
+        op.json = preset.getJsonString(mActivity.getString(R.string.saved));
+        op.name= mActivity.getString(R.string.filtershow_new_preset);
+        msg.obj = op;
+        mProcessingHandler.sendMessage(msg);
+    }
+
+    public void delete(int id) {
+        Message msg = mProcessingHandler.obtainMessage(DELETE);
+        msg.arg1 = id;
+        mProcessingHandler.sendMessage(msg);
+    }
+
+    static class UpdateOperation {
+        int id;
+        String name;
+    }
+
+    public void update(FilterUserPresetRepresentation representation) {
+        Message msg = mProcessingHandler.obtainMessage(UPDATE);
+        UpdateOperation op = new UpdateOperation();
+        op.id = representation.getId();
+        op.name = representation.getName();
+        msg.obj = op;
+        mProcessingHandler.sendMessage(msg);
+    }
+
+    private void processLoad() {
+        ArrayList<FilterUserPresetRepresentation> list = mUserPresets.getAllUserPresets();
+        Message msg = mResultHandler.obtainMessage(LOAD_RESULT);
+        msg.obj = list;
+        mResultHandler.sendMessage(msg);
+    }
+
+    private void resultLoad(Message msg) {
+        mRepresentations =
+                (ArrayList<FilterUserPresetRepresentation>) msg.obj;
+        mActivity.updateUserPresetsFromManager();
+    }
+
+    private void processSave(Message msg) {
+        SaveOperation op = (SaveOperation) msg.obj;
+        mUserPresets.insertStack(op.name, op.json.getBytes());
+        processLoad();
+    }
+
+    private void processDelete(Message msg) {
+        int id = msg.arg1;
+        mUserPresets.removeStack(id);
+        processLoad();
+    }
+
+    private void processUpdate(Message msg) {
+        UpdateOperation op = (UpdateOperation) msg.obj;
+        mUserPresets.updateStackName(op.id, op.name);
+        processLoad();
+    }
+
+}