1 /* 2 * Copyright (C) 2011 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 17 package com.android.ide.common.layout; 18 19 import com.android.annotations.NonNull; 20 import com.android.annotations.Nullable; 21 import com.android.ide.common.api.IMenuCallback; 22 import com.android.ide.common.api.INode; 23 import com.android.ide.common.api.INodeHandler; 24 import com.android.ide.common.api.RuleAction; 25 26 import java.util.List; 27 28 /** 29 * Convenience implementation of {@link IMenuCallback} which can be used to set a 30 * particular property to the new valueId or newValue passed from the {@link IMenuCallback} 31 */ 32 public class PropertyCallback implements IMenuCallback { 33 private final List<? extends INode> mTargetNodes; 34 private final String mUndoLabel; 35 private final String mUri; 36 private final String mAttribute; 37 38 /** 39 * Creates a new property callback. 40 * 41 * @param targetNodes the nodes to apply the property to, or null to use the 42 * nodes pass into the 43 * {@link #action(RuleAction, List, String, Boolean)} method. 44 * @param undoLabel the label to use for the undo action 45 * @param uri the attribute URI to apply 46 * @param attribute the attribute name to apply 47 */ PropertyCallback(List<? extends INode> targetNodes, String undoLabel, String uri, String attribute)48 public PropertyCallback(List<? extends INode> targetNodes, String undoLabel, 49 String uri, String attribute) { 50 super(); 51 mTargetNodes = targetNodes; 52 mUndoLabel = undoLabel; 53 mUri = uri; 54 mAttribute = attribute; 55 } 56 57 // ---- Implements IMenuCallback ---- 58 @Override action(@onNull RuleAction action, @NonNull List<? extends INode> selectedNodes, final @Nullable String valueId, final @Nullable Boolean newValue)59 public void action(@NonNull RuleAction action, @NonNull List<? extends INode> selectedNodes, 60 final @Nullable String valueId, final @Nullable Boolean newValue) { 61 if (mTargetNodes != null && mTargetNodes.size() > 0) { 62 selectedNodes = mTargetNodes; 63 } 64 if (selectedNodes == null || selectedNodes.size() == 0) { 65 return; 66 } 67 final List<? extends INode> nodes = selectedNodes; 68 selectedNodes.get(0).editXml(mUndoLabel, new INodeHandler() { 69 @Override 70 public void handle(@NonNull INode n) { 71 for (INode targetNode : nodes) { 72 if (valueId != null) { 73 targetNode.setAttribute(mUri, mAttribute, valueId); 74 } else { 75 assert newValue != null; 76 targetNode.setAttribute(mUri, mAttribute, Boolean.toString(newValue)); 77 } 78 } 79 } 80 }); 81 } 82 } 83