| /* |
| * 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; |
| } |
| } |