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1 // Copyright 2017 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 package org.chromium.chrome.browser.locale; | |
6 | |
7 import android.content.Context; | |
8 import android.content.DialogInterface; | |
9 import android.os.Bundle; | |
10 import android.support.annotation.Nullable; | |
11 import android.view.View; | |
12 import android.widget.RadioButton; | |
13 import android.widget.RadioGroup; | |
14 import android.widget.RadioGroup.OnCheckedChangeListener; | |
15 | |
16 import org.chromium.base.Callback; | |
17 import org.chromium.base.library_loader.LibraryLoader; | |
18 import org.chromium.chrome.R; | |
19 import org.chromium.chrome.browser.infobar.InfoBarControlLayout; | |
20 import org.chromium.chrome.browser.search_engines.TemplateUrlService; | |
21 import org.chromium.chrome.browser.search_engines.TemplateUrlService.TemplateUrl ; | |
22 import org.chromium.chrome.browser.widget.PromoDialog; | |
23 | |
24 import java.util.ArrayList; | |
25 import java.util.Collections; | |
26 import java.util.List; | |
27 | |
28 /** A dialog that forces the user to choose a default search engine. */ | |
29 public class DefaultSearchEnginePromoDialog extends PromoDialog implements OnChe ckedChangeListener { | |
30 /** Used to determine the promo dialog contents. */ | |
31 private final int mDialogType; | |
Ted C
2017/04/27 16:40:45
I think my comment from the previous CL was lost i
gone
2017/04/27 17:48:52
Done.
| |
32 | |
33 /** Called when the dialog is dismissed after the user has chosen a search e ngine. */ | |
34 private final Callback<Boolean> mOnDismissed; | |
35 | |
36 private RadioGroup mRadioGroup; | |
37 private String mSelectedKeyword; | |
38 | |
39 /** | |
40 * Construct and show the dialog. Will be asynchronous if the TemplateUrlSe rvice has not yet | |
41 * been loaded. | |
Ted C
2017/04/27 16:40:45
I think we should have javadoc for the params (in
gone
2017/04/27 17:48:52
Done.
| |
42 */ | |
43 public static void show(final Context context, final int dialogType, | |
44 @Nullable final Callback<Boolean> onDismissed) { | |
45 assert LibraryLoader.isInitialized(); | |
46 | |
47 // Load up the search engines. | |
48 final TemplateUrlService instance = TemplateUrlService.getInstance(); | |
49 instance.registerLoadListener(new TemplateUrlService.LoadListener() { | |
50 @Override | |
51 public void onTemplateUrlServiceLoaded() { | |
52 instance.unregisterLoadListener(this); | |
53 new DefaultSearchEnginePromoDialog(context, dialogType, onDismis sed).show(); | |
54 } | |
55 }); | |
56 if (!instance.isLoaded()) instance.load(); | |
57 } | |
58 | |
59 private DefaultSearchEnginePromoDialog( | |
60 Context context, int dialogType, @Nullable Callback<Boolean> onDismi ssed) { | |
61 super(context); | |
62 mDialogType = dialogType; | |
63 mOnDismissed = onDismissed; | |
64 setOnDismissListener(this); | |
65 | |
66 // No one should be able to bypass this dialog by clicking outside or by hitting back. | |
67 setCancelable(false); | |
68 setCanceledOnTouchOutside(false); | |
69 } | |
70 | |
71 @Override | |
72 protected DialogParams getDialogParams() { | |
73 PromoDialog.DialogParams params = new PromoDialog.DialogParams(); | |
74 params.headerStringResource = R.string.search_engine_dialog_title; | |
75 params.footerStringResource = R.string.search_engine_dialog_footer; | |
76 params.primaryButtonStringResource = R.string.ok; | |
77 return params; | |
78 } | |
79 | |
80 @Override | |
81 protected void onCreate(Bundle savedInstanceState) { | |
82 super.onCreate(savedInstanceState); | |
83 | |
84 // Determine what search engines will be listed. | |
85 TemplateUrlService instance = TemplateUrlService.getInstance(); | |
86 assert instance.isLoaded(); | |
87 List<TemplateUrl> engines = null; | |
88 if (mDialogType == LocaleManager.SEARCH_ENGINE_PROMO_SHOW_EXISTING) { | |
89 engines = instance.getSearchEngines(); | |
90 } else { | |
91 // TODO(dfalcantara): Handle the new user case. | |
92 assert false; | |
93 } | |
94 | |
95 // Shuffle up the engines. | |
96 List<CharSequence> engineNames = new ArrayList<>(); | |
97 List<String> engineKeywords = new ArrayList<>(); | |
98 Collections.shuffle(engines); | |
99 for (int i = 0; i < engines.size(); i++) { | |
100 TemplateUrl engine = engines.get(i); | |
101 engineNames.add(engine.getShortName()); | |
102 engineKeywords.add(engine.getKeyword()); | |
103 } | |
104 | |
105 // Add the search engines to the dialog. | |
106 InfoBarControlLayout controls = addControlLayout(); | |
107 mRadioGroup = controls.addRadioButtons( | |
108 engineNames, engineKeywords, InfoBarControlLayout.INVALID_INDEX) ; | |
109 mRadioGroup.setOnCheckedChangeListener(this); | |
110 updateButtonState(); | |
111 } | |
112 | |
113 @Override | |
114 public void onCheckedChanged(RadioGroup group, int checkedId) { | |
115 mSelectedKeyword = null; | |
Ted C
2017/04/27 16:40:45
can the contents of this method be replaced with:
| |
116 | |
117 // Run through the RadioGroup to figure out which one was checked. | |
118 for (int i = 0; i < group.getChildCount(); i++) { | |
119 View child = group.getChildAt(i); | |
120 assert child instanceof RadioButton; | |
121 | |
122 RadioButton button = (RadioButton) child; | |
123 if (button.isChecked()) { | |
124 assert mSelectedKeyword == null; | |
125 mSelectedKeyword = (String) button.getTag(); | |
126 } | |
127 } | |
128 | |
129 updateButtonState(); | |
130 } | |
131 | |
132 @Override | |
133 public void onClick(View view) { | |
134 if (view.getId() == R.id.button_primary) { | |
135 if (mSelectedKeyword == null) { | |
136 updateButtonState(); | |
137 return; | |
138 } | |
139 | |
140 dismiss(); | |
141 } else { | |
142 assert false : "Unhandled click."; | |
143 } | |
144 | |
145 // Don't propagate the click to the parent to prevent circumventing the dialog. | |
146 } | |
147 | |
148 @Override | |
149 public void onDismiss(DialogInterface dialog) { | |
150 if (mSelectedKeyword == null) { | |
151 // This shouldn't happen, but in case it does, finish the Activity s o that the user has | |
152 // to respond to the dialog next time. | |
153 if (getOwnerActivity() != null) getOwnerActivity().finish(); | |
154 } else { | |
155 TemplateUrlService.getInstance().setSearchEngine(mSelectedKeyword.to String()); | |
156 // TODO(dfalcantara): Prevent the dialog from appearing again. | |
157 } | |
158 | |
159 if (mOnDismissed != null) mOnDismissed.onResult(mSelectedKeyword != null ); | |
160 } | |
161 | |
162 private void updateButtonState() { | |
163 findViewById(R.id.button_primary).setEnabled(mSelectedKeyword != null); | |
164 } | |
165 } | |
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