FragmentRule.java revision 85e4a1a9dd133abb879ec211ce8dd385004edf22 
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 */
16package com.android.ide.common.layout;
17
18import static com.android.ide.common.layout.LayoutConstants.ATTR_NAME;
19import static com.android.utils.XmlUtils.ANDROID_URI;
20
21import com.android.annotations.NonNull;
22import com.android.ide.common.api.INode;
23import com.android.ide.common.api.IViewRule;
24import com.android.ide.common.api.InsertType;
25
26/**
27 * An {@link IViewRule} for the special XML {@code <fragment>} tag.
28 */
29public class FragmentRule extends BaseViewRule {
30    @Override
31    public void onCreate(@NonNull INode node, @NonNull INode parent,
32            @NonNull InsertType insertType) {
33        // When dropping a fragment tag, ask the user which layout to include.
34        if (insertType == InsertType.CREATE) { // NOT InsertType.CREATE_PREVIEW
35            String fqcn = mRulesEngine.displayFragmentSourceInput();
36            if (fqcn != null) {
37                node.editXml("Add Fragment",
38                    new PropertySettingNodeHandler(ANDROID_URI, ATTR_NAME,
39                            fqcn.length() > 0 ? fqcn : null));
40            } else {
41                // Remove the view; the insertion was canceled
42                parent.removeChild(node);
43            }
44        }
45    }
46}
47