1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
|
// Copyright (C) 2009 The Android Open Source Project
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package com.google.gwtexpui.globalkey.client;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.event.dom.client.KeyPressEvent;
import com.google.gwt.event.dom.client.KeyPressHandler;
import com.google.gwt.user.client.DOM;
import com.google.gwt.user.client.ui.Anchor;
import com.google.gwt.user.client.ui.FlowPanel;
import com.google.gwt.user.client.ui.FocusPanel;
import com.google.gwt.user.client.ui.Grid;
import com.google.gwt.user.client.ui.HasHorizontalAlignment;
import com.google.gwt.user.client.ui.HTMLTable.CellFormatter;
import com.google.gwtexpui.safehtml.client.SafeHtml;
import com.google.gwtexpui.safehtml.client.SafeHtmlBuilder;
import com.google.gwtexpui.user.client.PluginSafePopupPanel;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.Comparator;
import java.util.LinkedHashMap;
import java.util.List;
public class KeyHelpPopup extends PluginSafePopupPanel implements
KeyPressHandler {
private final FocusPanel focus;
public KeyHelpPopup() {
super(true/* autohide */, true/* modal */);
setStyleName(KeyResources.I.css().helpPopup());
final Anchor closer = new Anchor(KeyConstants.I.closeButton());
closer.addClickHandler(new ClickHandler() {
@Override
public void onClick(final ClickEvent event) {
hide();
}
});
final Grid header = new Grid(1, 3);
header.setStyleName(KeyResources.I.css().helpHeader());
header.setText(0, 0, KeyConstants.I.keyboardShortcuts());
header.setWidget(0, 2, closer);
final CellFormatter fmt = header.getCellFormatter();
fmt.addStyleName(0, 1, KeyResources.I.css().helpHeaderGlue());
fmt.setHorizontalAlignment(0, 2, HasHorizontalAlignment.ALIGN_RIGHT);
final Grid lists = new Grid(0, 7);
lists.setStyleName(KeyResources.I.css().helpTable());
populate(lists);
lists.getCellFormatter().addStyleName(0, 3,
KeyResources.I.css().helpTableGlue());
final FlowPanel body = new FlowPanel();
body.add(header);
DOM.appendChild(body.getElement(), DOM.createElement("hr"));
body.add(lists);
focus = new FocusPanel(body);
DOM.setStyleAttribute(focus.getElement(), "outline", "0px");
DOM.setElementAttribute(focus.getElement(), "hideFocus", "true");
focus.addKeyPressHandler(this);
add(focus);
}
@Override
public void setVisible(final boolean show) {
super.setVisible(show);
if (show) {
focus.setFocus(true);
}
}
@Override
public void onKeyPress(final KeyPressEvent event) {
if (KeyCommandSet.toMask(event) == ShowHelpCommand.INSTANCE.keyMask) {
// Block the '?' key from triggering us to show right after
// we just hide ourselves.
//
event.stopPropagation();
event.preventDefault();
}
hide();
}
private void populate(final Grid lists) {
int end[] = new int[5];
int column = 0;
for (final KeyCommandSet set : combinedSetsByName()) {
int row = end[column];
row = formatGroup(lists, row, column, set);
end[column] = row;
if (column == 0) {
column = 4;
} else {
column = 0;
}
}
}
/**
* @return an ordered collection of KeyCommandSet, combining sets which share
* the same name, so that each set name appears at most once.
*/
private static Collection<KeyCommandSet> combinedSetsByName() {
final LinkedHashMap<String, KeyCommandSet> byName =
new LinkedHashMap<String, KeyCommandSet>();
for (final KeyCommandSet set : GlobalKey.active.all.getSets()) {
KeyCommandSet v = byName.get(set.getName());
if (v == null) {
v = new KeyCommandSet(set.getName());
byName.put(v.getName(), v);
}
v.add(set);
}
return byName.values();
}
private int formatGroup(final Grid lists, int row, final int col,
final KeyCommandSet set) {
if (set.isEmpty()) {
return row;
}
if (lists.getRowCount() < row + 1) {
lists.resizeRows(row + 1);
}
lists.setText(row, col + 2, set.getName());
lists.getCellFormatter().addStyleName(row, col + 2,
KeyResources.I.css().helpGroup());
row++;
return formatKeys(lists, row, col, set, null);
}
private int formatKeys(final Grid lists, int row, final int col,
final KeyCommandSet set, final SafeHtml prefix) {
final CellFormatter fmt = lists.getCellFormatter();
final int initialRow = row;
final List<KeyCommand> keys = sort(set);
if (lists.getRowCount() < row + keys.size()) {
lists.resizeRows(row + keys.size());
}
FORMAT_KEYS: for (int i = 0; i < keys.size(); i++) {
final KeyCommand k = keys.get(i);
if (k instanceof CompoundKeyCommand) {
final SafeHtmlBuilder b = new SafeHtmlBuilder();
b.append(k.describeKeyStroke());
row = formatKeys(lists, row, col, ((CompoundKeyCommand) k).getSet(), b);
continue;
}
for (int prior = 0; prior < i; prior++) {
if (KeyCommand.same(keys.get(prior), k)) {
final int r = initialRow + prior;
final SafeHtmlBuilder b = new SafeHtmlBuilder();
b.append(SafeHtml.get(lists, r, col + 0));
b.append(" ");
b.append(KeyConstants.I.orOtherKey());
b.append(" ");
if (prefix != null) {
b.append(prefix);
b.append(" ");
b.append(KeyConstants.I.thenOtherKey());
b.append(" ");
}
b.append(k.describeKeyStroke());
SafeHtml.set(lists, r, col + 0, b);
continue FORMAT_KEYS;
}
}
if (prefix != null) {
final SafeHtmlBuilder b = new SafeHtmlBuilder();
b.append(prefix);
b.append(" ");
b.append(KeyConstants.I.thenOtherKey());
b.append(" ");
b.append(k.describeKeyStroke());
SafeHtml.set(lists, row, col + 0, b);
} else {
SafeHtml.set(lists, row, col + 0, k.describeKeyStroke());
}
lists.setText(row, col + 1, ":");
lists.setText(row, col + 2, k.getHelpText());
fmt.addStyleName(row, col + 0, KeyResources.I.css().helpKeyStroke());
fmt.addStyleName(row, col + 1, KeyResources.I.css().helpSeparator());
row++;
}
return row;
}
private List<KeyCommand> sort(final KeyCommandSet set) {
final List<KeyCommand> keys = new ArrayList<KeyCommand>(set.getKeys());
Collections.sort(keys, new Comparator<KeyCommand>() {
@Override
public int compare(KeyCommand arg0, KeyCommand arg1) {
if (arg0.keyMask < arg1.keyMask) {
return -1;
} else if (arg0.keyMask > arg1.keyMask) {
return 1;
}
return 0;
}
});
return keys;
}
}
|
