1 files changed, 62 insertions, 0 deletions
diff --git a/eclipse/plugins/com.android.ide.eclipse.adt/src/com/android/ide/common/layout/AdapterViewRule.java b/eclipse/plugins/com.android.ide.eclipse.adt/src/com/android/ide/common/layout/AdapterViewRule.java
new file mode 100644
index 000000000..28f5fc95e
--- /dev/null
+++ b/eclipse/plugins/com.android.ide.eclipse.adt/src/com/android/ide/common/layout/AdapterViewRule.java
@@ -0,0 +1,62 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Eclipse Public License, Version 1.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.eclipse.org/org/documents/epl-v10.php
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.android.ide.common.layout;
+
+import com.android.annotations.NonNull;
+import com.android.annotations.Nullable;
+import com.android.ide.common.api.DrawingStyle;
+import com.android.ide.common.api.DropFeedback;
+import com.android.ide.common.api.IDragElement;
+import com.android.ide.common.api.IFeedbackPainter;
+import com.android.ide.common.api.IGraphics;
+import com.android.ide.common.api.INode;
+import com.android.ide.common.api.Point;
+import com.android.ide.common.api.Rect;
+
+/** Rule for AdapterView subclasses that don't have more specific rules */
+public class AdapterViewRule extends BaseLayoutRule {
+    @Override
+    public DropFeedback onDropEnter(@NonNull INode targetNode, @Nullable Object targetView,
+            @Nullable IDragElement[] elements) {
+        // You are not allowed to insert children into AdapterViews; you must
+        // use the dedicated addView methods etc dynamically
+        DropFeedback dropFeedback = new DropFeedback(null,  new IFeedbackPainter() {
+            @Override
+            public void paint(@NonNull IGraphics gc, @NonNull INode node,
+                    @NonNull DropFeedback feedback) {
+                Rect b = node.getBounds();
+                if (b.isValid()) {
+                    gc.useStyle(DrawingStyle.DROP_RECIPIENT);
+                    gc.drawRect(b);
+                }
+            }
+        });
+        String fqcn = targetNode.getFqcn();
+        String name = fqcn.substring(fqcn.lastIndexOf('.') +1);
+        dropFeedback.errorMessage = String.format(
+                "%s cannot be configured via XML; add content to the AdapterView using Java code",
+                name);
+        dropFeedback.invalidTarget = true;
+        return dropFeedback;
+    }
+
+    @Override
+    public DropFeedback onDropMove(@NonNull INode targetNode, @NonNull IDragElement[] elements,
+            @Nullable DropFeedback feedback, @NonNull Point p) {
+        feedback.invalidTarget = true;
+        return feedback;
+    }
+}