Add scene result, update gallery comments for post comment, add isViewCreated in BaseScene

app/src/main/java/com/hippo/scene/Announcer.java

@@ -24,7 +24,8 @@ public final class Announcer {
     Bundle args;
     TransitionHelper tranHelper;
     int flag;
-    int requestId;
+    SceneFragment requestFrom;
+    int requestCode;
 
     public Announcer(Class<?> clazz) {
         this.clazz = clazz;
@@ -45,8 +46,9 @@ public final class Announcer {
         return this;
     }
 
-    public Announcer setRequestId(int requestId) {
-        this.requestId = requestId;
+    public Announcer setRequestCode(SceneFragment requestFrom, int requestCode) {
+        this.requestFrom = requestFrom;
+        this.requestCode = requestCode;
         return this;
     }
 }

app/src/main/java/com/hippo/scene/SceneFragment.java

@@ -25,9 +25,12 @@ import android.support.v4.app.FragmentActivity;
 import android.view.View;
 
 import com.hippo.ehviewer.R;
+import com.hippo.yorozuya.IntList;
 
 import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
+import java.util.ArrayList;
+import java.util.List;
 
 public class SceneFragment extends Fragment {
 
@@ -40,6 +43,17 @@ public class SceneFragment extends Fragment {
 
     public static final int FLAG_REMOVE_ALL_THE_OTHER_SCENES = 0x1;
 
+    /** Standard scene result: operation canceled. */
+    public static final int RESULT_CANCELED  = 0;
+    /** Standard scene result: operation succeeded. */
+    public static final int RESULT_OK = -1;
+
+    int resultCode = RESULT_CANCELED;
+    Bundle result = null;
+
+    List<String> mRequestSceneTagList = new ArrayList<>(0);
+    IntList mRequestCodeList = new IntList(0);
+
     @LaunchMode
     public int getLaunchMode() {
         return LAUNCH_MODE_STANDARD;
@@ -100,4 +114,30 @@ public class SceneFragment extends Fragment {
         view.setTag(R.id.fragment_tag, getTag());
         view.setBackgroundColor(getContext().getResources().getColor(R.color.background_light));
     }
+
+    void addRequest(String requestSceneTag, int requestCode) {
+        mRequestSceneTagList.add(requestSceneTag);
+        mRequestCodeList.add(requestCode);
+    }
+
+    void returnResult(StageActivity stage) {
+        for (int i = 0, size = Math.min(mRequestSceneTagList.size(), mRequestCodeList.size()); i < size; i++) {
+            String tag = mRequestSceneTagList.get(i);
+            int code = mRequestCodeList.get(i);
+            SceneFragment scene = stage.findSceneByTag(tag);
+            if (scene != null) {
+                scene.onSceneResult(code, resultCode, result);
+            }
+        }
+        mRequestSceneTagList.clear();
+        mRequestCodeList.clear();
+    }
+
+    protected void onSceneResult(int requestCode, int resultCode, Bundle data) {
+    }
+
+    public void setResult(int resultCode, Bundle result) {
+        this.resultCode = resultCode;
+        this.result = result;
+    }
 }

app/src/main/java/com/hippo/scene/StageActivity.java

@@ -147,6 +147,10 @@ public abstract class StageActivity extends AppCompatActivity {
                     currentScene.onNewArguments(args);
                 }
                 if (!removeAllTheOthers) {
+                    // Check request
+                    if (announcer.requestFrom != null) {
+                        currentScene.addRequest(announcer.requestFrom.getTag(), announcer.requestCode);
+                    }
                     // Done!
                     return;
                 }
@@ -221,6 +225,11 @@ public abstract class StageActivity extends AppCompatActivity {
         }
         transaction.commit();
 
+        // Check request
+        if (newScene != null && announcer.requestFrom != null) {
+            newScene.addRequest(announcer.requestFrom.getTag(), announcer.requestCode);
+        }
+
         // Update SoftInputMode
         if (newScene != null) {
             getWindow().setSoftInputMode(newScene.getSoftInputMode());
@@ -305,9 +314,14 @@ public abstract class StageActivity extends AppCompatActivity {
         // Remove tag
         mSceneTagList.remove(index);
 
+        // Return result
+        if (scene instanceof SceneFragment) {
+            ((SceneFragment) scene).returnResult(this);
+        }
+
         // Update SoftInputMode
         if (next instanceof SceneFragment) {
-            getWindow().setSoftInputMode(((SceneFragment) scene).getSoftInputMode());
+            getWindow().setSoftInputMode(((SceneFragment) next).getSoftInputMode());
         }
     }