1/*
2 * Copyright (C) 2010 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
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
17package android.widget.expandablelistview;
18
19import android.view.ContextMenu;
20import android.view.View;
21import android.view.ContextMenu.ContextMenuInfo;
22import android.view.View.OnCreateContextMenuListener;
23import android.widget.ExpandableListView;
24import android.widget.AdapterView.AdapterContextMenuInfo;
25
26public class PositionTesterContextMenuListener implements OnCreateContextMenuListener {
27
28    private int groupPosition, childPosition;
29
30    // Fake constant to store in testType a test type specific to headers and footers
31    private static final int ADAPTER_TYPE = -1;
32    private int testType; // as returned by getPackedPositionType
33
34    // Will be set to null by each call to onCreateContextMenu, unless an error occurred.
35    private String errorMessage;
36
37    public void expectGroupContextMenu(int groupPosition) {
38        this.groupPosition = groupPosition;
39        testType = ExpandableListView.PACKED_POSITION_TYPE_GROUP;
40    }
41
42    public void expectChildContextMenu(int groupPosition, int childPosition) {
43        this.groupPosition = groupPosition;
44        this.childPosition = childPosition;
45        testType = ExpandableListView.PACKED_POSITION_TYPE_CHILD;
46    }
47
48    public void expectAdapterContextMenu(int flatPosition) {
49        this.groupPosition = flatPosition;
50        testType = ADAPTER_TYPE;
51    }
52
53    public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
54        errorMessage = null;
55        if (testType == ADAPTER_TYPE) {
56            if (!isTrue("MenuInfo is not an AdapterContextMenuInfo",
57                    menuInfo instanceof AdapterContextMenuInfo)) {
58                return;
59            }
60            AdapterContextMenuInfo adapterContextMenuInfo = (AdapterContextMenuInfo) menuInfo;
61            if (!areEqual("Wrong flat position", groupPosition, adapterContextMenuInfo.position)) {
62                return;
63            }
64        } else {
65            if (!isTrue("MenuInfo is not an ExpandableListContextMenuInfo",
66                    menuInfo instanceof ExpandableListView.ExpandableListContextMenuInfo)) {
67                return;
68            }
69            ExpandableListView.ExpandableListContextMenuInfo elvMenuInfo =
70                (ExpandableListView.ExpandableListContextMenuInfo) menuInfo;
71            long packedPosition = elvMenuInfo.packedPosition;
72
73            int packedPositionType = ExpandableListView.getPackedPositionType(packedPosition);
74            if (!areEqual("Wrong packed position type", testType, packedPositionType)) {
75                return;
76            }
77
78            int packedPositionGroup = ExpandableListView.getPackedPositionGroup(packedPosition);
79            if (!areEqual("Wrong group position", groupPosition, packedPositionGroup)) {
80                return;
81            }
82
83            if (testType == ExpandableListView.PACKED_POSITION_TYPE_CHILD) {
84                int packedPositionChild = ExpandableListView.getPackedPositionChild(packedPosition);
85                if (!areEqual("Wrong child position", childPosition, packedPositionChild)) {
86                    return;
87                }
88            }
89        }
90    }
91
92    private boolean areEqual(String message, int expected, int actual) {
93        if (expected != actual) {
94            errorMessage = String.format(message + " (%d vs %d", expected, actual);
95            return false;
96        }
97        return true;
98    }
99
100    private boolean isTrue(String message, boolean value) {
101        if (!value) {
102            errorMessage = message;
103            return false;
104        }
105        return true;
106    }
107
108    public String getErrorMessage() {
109        return errorMessage;
110    }
111}
112