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SVPopupMenu.java
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1 // Copyright 2007 Google Inc. All Rights Reserved.
2 //
3 // Licensed under the Apache License, Version 2.0 (the "License"); You may not
4 // use this file except in compliance with the License. You may obtain a copy of
5 // the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by
6 // applicable law or agreed to in writing, software distributed under the
7 // License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS
8 // OF ANY KIND, either express or implied. See the License for the specific
9 // language governing permissions and limitations under the License.
10
11 package com.google.scrollview.ui;
12
13 import com.google.scrollview.events.SVEventType;
14 import com.google.scrollview.ui.SVMenuItem;
15 import com.google.scrollview.ui.SVWindow;
16
17 import java.awt.Component;
18 import java.awt.event.ActionEvent;
19 import java.awt.event.ActionListener;
20 import java.util.HashMap;
21
22 import javax.swing.JMenu;
23 import javax.swing.JPopupMenu;
24
34 public class SVPopupMenu implements ActionListener {
36 private JPopupMenu root;
38 private HashMap<String, SVAbstractMenuItem> items;
40 private SVWindow svWindow;
41
47 SVPopupMenu(SVWindow sv) {
48 root = new JPopupMenu();
49 svWindow = sv;
50 items = new HashMap<String, SVAbstractMenuItem>();
51 }
52
64 public void add(String parent, String name, int id) {
65 // A duplicate entry - we just throw it away, since its already in.
66 if (items.get(name) != null) { return; }
67 // A new submenu at the top-level
68 if (parent.equals("")) {
69 JMenu jli = new JMenu(name);
70 SVAbstractMenuItem mli = new SVSubMenuItem(name, jli);
71 items.put(name, mli);
72 root.add(jli);
73 }
74 // A new sub-submenu
75 else if (id == -1) {
76 SVAbstractMenuItem jmi = items.get(parent);
77 JMenu jli = new JMenu(name);
78 SVAbstractMenuItem mli = new SVSubMenuItem(name, jli);
79 items.put(name, mli);
80 jmi.add(jli);
81 }
82 // A new child entry. Add to appropriate parent.
83 else {
84 SVAbstractMenuItem jmi = items.get(parent);
85 if (jmi == null) {
86 System.out.println("ERROR: Unknown parent " + parent);
87 System.exit(1);
88 }
89 SVAbstractMenuItem mli = new SVEmptyMenuItem(id, name);
90 mli.mi.addActionListener(this);
91 items.put(name, mli);
92 jmi.add(mli);
93 }
94 }
95
111 public void add(String parent, String name, int id, String value, String desc) {
112 SVAbstractMenuItem jmi = items.get(parent);
113 SVMenuItem mli = new SVMenuItem(id, name, value, desc);
114 mli.mi.addActionListener(this);
115 items.put(name, mli);
116 if (jmi == null) { // add to root
117 root.add(mli.mi);
118 } else { // add to parent
119 jmi.add(mli);
120 }
121 }
122
123
124
129 public void actionPerformed(ActionEvent e) {
130
131 // Get the corresponding menuitem
132 SVAbstractMenuItem svm = items.get(e.getActionCommand());
133
134 svm.performAction(svWindow, SVEventType.SVET_POPUP);
135 }
136
141 public void show(Component Invoker, int x, int y) {
142 root.show(Invoker, x, y);
143 }
144 }