1 /* 2 * Copyright (C) 2010 The Android Open Source Project 3 * 4 * Licensed under the Eclipse Public License, Version 1.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.eclipse.org/org/documents/epl-v10.php 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 package com.android.ide.common.layout; 17 18 import com.android.ide.common.api.DrawingStyle; 19 import com.android.ide.common.api.DropFeedback; 20 import com.android.ide.common.api.IDragElement; 21 import com.android.ide.common.api.IFeedbackPainter; 22 import com.android.ide.common.api.IGraphics; 23 import com.android.ide.common.api.INode; 24 import com.android.ide.common.api.Point; 25 import com.android.ide.common.api.Rect; 26 27 /** Rule for AdapterView subclasses that don't have more specific rules */ 28 public class AdapterViewRule extends BaseLayoutRule { 29 @Override 30 public DropFeedback onDropEnter(INode targetNode, Object targetView, IDragElement[] elements) { 31 // You are not allowed to insert children into AdapterViews; you must 32 // use the dedicated addView methods etc dynamically 33 DropFeedback dropFeedback = new DropFeedback(null, new IFeedbackPainter() { 34 public void paint(IGraphics gc, INode node, DropFeedback feedback) { 35 Rect b = node.getBounds(); 36 if (b.isValid()) { 37 gc.useStyle(DrawingStyle.DROP_RECIPIENT); 38 gc.drawRect(b); 39 } 40 } 41 }); 42 String fqcn = targetNode.getFqcn(); 43 String name = fqcn.substring(fqcn.lastIndexOf('.') +1); 44 dropFeedback.errorMessage = String.format( 45 "%s cannot be configured via XML; add content to the AdapterView using Java code", 46 name); 47 dropFeedback.invalidTarget = true; 48 return dropFeedback; 49 } 50 51 @Override 52 public DropFeedback onDropMove(INode targetNode, IDragElement[] elements, 53 DropFeedback feedback, Point p) { 54 feedback.invalidTarget = true; 55 return feedback; 56 } 57 } 58
