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
229
230
231
232
233
234
235
|
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
package org.chromium.content.browser.input;
import org.chromium.content.browser.ContentViewCore;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.res.TypedArray;
import android.util.SparseBooleanArray;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ArrayAdapter;
import android.widget.CheckedTextView;
import android.widget.ListView;
import org.chromium.content.R;
/**
* Handles the popup dialog for the <select> HTML tag support.
*/
public class SelectPopupDialog {
// The currently showing popup dialog, null if none is showing.
private static SelectPopupDialog sShownDialog;
private static final int[] SELECT_DIALOG_ATTRS = {
R.attr.select_dialog_multichoice,
R.attr.select_dialog_singlechoice
};
// The dialog hosting the popup list view.
private AlertDialog mListBoxPopup = null;
private ContentViewCore mContentViewCore;
/**
* Subclass ArrayAdapter so we can disable OPTION_GROUP items.
*/
private class SelectPopupArrayAdapter extends ArrayAdapter<String> {
/**
* Possible values for mItemEnabled.
* Keep in sync with the value passed from content_view_core_impl.cc
*/
final static int POPUP_ITEM_TYPE_GROUP = 0;
final static int POPUP_ITEM_TYPE_DISABLED = 1;
final static int POPUP_ITEM_TYPE_ENABLED = 2;
// Indicates the POPUP_ITEM_TYPE of each item.
private int[] mItemEnabled;
// True if all items are POPUP_ITEM_TYPE_ENABLED.
private boolean mAreAllItemsEnabled;
public SelectPopupArrayAdapter(String[] labels, int[] enabled, boolean multiple) {
super(mContentViewCore.getContext(), getSelectDialogLayout(multiple), labels);
mItemEnabled = enabled;
mAreAllItemsEnabled = true;
for (int item : mItemEnabled) {
if (item != POPUP_ITEM_TYPE_ENABLED) {
mAreAllItemsEnabled = false;
break;
}
}
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
if (position < 0 || position >= getCount()) {
return null;
}
// Always pass in null so that we will get a new CheckedTextView. Otherwise, an item
// which was previously used as an <optgroup> element (i.e. has no check), could get
// used as an <option> element, which needs a checkbox/radio, but it would not have
// one.
convertView = super.getView(position, null, parent);
if (mItemEnabled[position] != POPUP_ITEM_TYPE_ENABLED) {
if (mItemEnabled[position] == POPUP_ITEM_TYPE_GROUP) {
// Currently select_dialog_multichoice & select_dialog_multichoice use
// CheckedTextViews. If that changes, the class cast will no longer be valid.
((CheckedTextView) convertView).setCheckMarkDrawable(null);
} else {
// Draw the disabled element in a disabled state.
convertView.setEnabled(false);
}
}
return convertView;
}
@Override
public boolean areAllItemsEnabled() {
return mAreAllItemsEnabled;
}
@Override
public boolean isEnabled(int position) {
if (position < 0 || position >= getCount()) {
return false;
}
return mItemEnabled[position] == POPUP_ITEM_TYPE_ENABLED;
}
}
private int getSelectDialogLayout(boolean isMultiChoice) {
int resource_id;
TypedArray styledAttributes = mContentViewCore.getContext().obtainStyledAttributes(
R.style.SelectPopupDialog, SELECT_DIALOG_ATTRS);
resource_id = styledAttributes.getResourceId(isMultiChoice ? 0 : 1, 0);
styledAttributes.recycle();
return resource_id;
}
private SelectPopupDialog(ContentViewCore contentViewCore, String[] labels, int[] enabled,
boolean multiple, int[] selected) {
mContentViewCore = contentViewCore;
final ListView listView = new ListView(mContentViewCore.getContext());
listView.setCacheColorHint(0);
AlertDialog.Builder b = new AlertDialog.Builder(mContentViewCore.getContext())
.setView(listView)
.setCancelable(true)
.setInverseBackgroundForced(true);
if (multiple) {
b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
mContentViewCore.selectPopupMenuItems(getSelectedIndices(listView));
}});
b.setNegativeButton(android.R.string.cancel,
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
mContentViewCore.selectPopupMenuItems(null);
}});
}
mListBoxPopup = b.create();
final SelectPopupArrayAdapter adapter = new SelectPopupArrayAdapter(labels, enabled,
multiple);
listView.setAdapter(adapter);
listView.setFocusableInTouchMode(true);
if (multiple) {
listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE);
for (int i = 0; i < selected.length; ++i) {
listView.setItemChecked(selected[i], true);
}
} else {
listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE);
listView.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View v,
int position, long id) {
mContentViewCore.selectPopupMenuItems(getSelectedIndices(listView));
mListBoxPopup.dismiss();
}
});
if (selected.length > 0) {
listView.setSelection(selected[0]);
listView.setItemChecked(selected[0], true);
}
}
mListBoxPopup.setOnCancelListener(new DialogInterface.OnCancelListener() {
@Override
public void onCancel(DialogInterface dialog) {
mContentViewCore.selectPopupMenuItems(null);
}
});
mListBoxPopup.setOnDismissListener(new DialogInterface.OnDismissListener() {
@Override
public void onDismiss(DialogInterface dialog) {
mListBoxPopup = null;
sShownDialog = null;
}
});
}
private int[] getSelectedIndices(ListView listView) {
SparseBooleanArray sparseArray = listView.getCheckedItemPositions();
int selectedCount = 0;
for (int i = 0; i < sparseArray.size(); ++i) {
if (sparseArray.valueAt(i)) {
selectedCount++;
}
}
int[] indices = new int[selectedCount];
for (int i = 0, j = 0; i < sparseArray.size(); ++i) {
if (sparseArray.valueAt(i)) {
indices[j++] = sparseArray.keyAt(i);
}
}
return indices;
}
/**
* Shows the popup menu triggered by the passed ContentView.
* Hides any currently shown popup.
* @param items Items to show.
* @param enabled POPUP_ITEM_TYPEs for items.
* @param multiple Whether the popup menu should support multi-select.
* @param selectedIndices Indices of selected items.
*/
public static void show(ContentViewCore contentViewCore, String[] items, int[] enabled,
boolean multiple, int[] selectedIndices) {
// Hide the popup currently showing if any. This could happen if the user pressed a select
// and pressed it again before the popup was shown. In that case, the previous popup is
// irrelevant and can be hidden.
hide(null);
sShownDialog = new SelectPopupDialog(contentViewCore, items, enabled, multiple,
selectedIndices);
sShownDialog.mListBoxPopup.show();
}
/**
* Hides the showing popup menu if any it was triggered by the passed ContentView. If
* contentView is null, hides it regardless of which ContentView triggered it.
* @param contentView
*/
public static void hide(ContentViewCore contentView) {
if (sShownDialog != null &&
(contentView == null || sShownDialog.mContentViewCore == contentView)) {
if (contentView != null) contentView.selectPopupMenuItems(null);
sShownDialog.mListBoxPopup.dismiss();
}
}
// The methods below are used by tests.
public static SelectPopupDialog getCurrent() {
return sShownDialog;
}
}
|
