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1// Copyright (c) 2012 The Chromium Embedded Framework Authors.
2// Portions copyright (c) 2012 The Chromium Authors. All rights reserved.
3// Use of this source code is governed by a BSD-style license that can be
4// found in the LICENSE file.
5
6#include "libcef/browser/native/javascript_dialog_runner_mac.h"
7
8#import <Cocoa/Cocoa.h>
9
10#include "base/bind.h"
11#include "base/strings/sys_string_conversions.h"
12#include "base/strings/utf_string_conversions.h"
13
14// Helper object that receives the notification that the dialog/sheet is
15// going away. Is responsible for cleaning itself up.
16@interface CefJavaScriptDialogHelper : NSObject <NSAlertDelegate> {
17 @private
18  base::scoped_nsobject<NSAlert> alert_;
19  NSTextField* textField_;  // WEAK; owned by alert_
20
21  // Copies of the fields in CefJavaScriptDialog because they're private.
22  CefJavaScriptDialogRunner::DialogClosedCallback callback_;
23}
24
25- (id)initHelperWithCallback:
26    (CefJavaScriptDialogRunner::DialogClosedCallback)callback;
27- (NSAlert*)alert;
28- (NSTextField*)textField;
29- (void)alertDidEnd:(NSAlert*)alert
30         returnCode:(int)returnCode
31        contextInfo:(void*)contextInfo;
32- (void)cancel;
33
34@end
35
36@implementation CefJavaScriptDialogHelper
37
38- (id)initHelperWithCallback:
39    (CefJavaScriptDialogRunner::DialogClosedCallback)callback {
40  if (self = [super init])
41    callback_ = std::move(callback);
42
43  return self;
44}
45
46- (NSAlert*)alert {
47  alert_.reset([[NSAlert alloc] init]);
48  return alert_;
49}
50
51- (NSTextField*)textField {
52  textField_ = [[NSTextField alloc] initWithFrame:NSMakeRect(0, 0, 300, 22)];
53  [[textField_ cell] setLineBreakMode:NSLineBreakByTruncatingTail];
54  [alert_ setAccessoryView:textField_];
55  [[alert_ window] setInitialFirstResponder:textField_];
56  [textField_ release];
57
58  return textField_;
59}
60
61- (void)alertDidEnd:(NSAlert*)alert
62         returnCode:(int)returnCode
63        contextInfo:(void*)contextInfo {
64  if (returnCode == NSModalResponseStop)
65    return;
66
67  bool success = returnCode == NSAlertFirstButtonReturn;
68  std::u16string input;
69  if (textField_)
70    input = base::SysNSStringToUTF16([textField_ stringValue]);
71
72  std::move(callback_).Run(success, input);
73}
74
75- (void)cancel {
76  [NSApp endSheet:[alert_ window]];
77  alert_.reset();
78}
79
80@end
81
82CefJavaScriptDialogRunnerMac::CefJavaScriptDialogRunnerMac()
83    : weak_ptr_factory_(this) {}
84
85CefJavaScriptDialogRunnerMac::~CefJavaScriptDialogRunnerMac() {
86  Cancel();
87}
88
89void CefJavaScriptDialogRunnerMac::Run(
90    AlloyBrowserHostImpl* browser,
91    content::JavaScriptDialogType message_type,
92    const std::u16string& display_url,
93    const std::u16string& message_text,
94    const std::u16string& default_prompt_text,
95    DialogClosedCallback callback) {
96  DCHECK(!helper_.get());
97  callback_ = std::move(callback);
98
99  bool text_field = message_type == content::JAVASCRIPT_DIALOG_TYPE_PROMPT;
100  bool one_button = message_type == content::JAVASCRIPT_DIALOG_TYPE_ALERT;
101
102  helper_.reset([[CefJavaScriptDialogHelper alloc]
103      initHelperWithCallback:base::BindOnce(
104                                 &CefJavaScriptDialogRunnerMac::DialogClosed,
105                                 weak_ptr_factory_.GetWeakPtr())]);
106
107  // Show the modal dialog.
108  NSAlert* alert = [helper_ alert];
109  NSTextField* field = nil;
110  if (text_field) {
111    field = [helper_ textField];
112    [field setStringValue:base::SysUTF16ToNSString(default_prompt_text)];
113  }
114  [alert setDelegate:helper_];
115  [alert setInformativeText:base::SysUTF16ToNSString(message_text)];
116
117  std::u16string label;
118  switch (message_type) {
119    case content::JAVASCRIPT_DIALOG_TYPE_ALERT:
120      label = u"JavaScript Alert";
121      break;
122    case content::JAVASCRIPT_DIALOG_TYPE_PROMPT:
123      label = u"JavaScript Prompt";
124      break;
125    case content::JAVASCRIPT_DIALOG_TYPE_CONFIRM:
126      label = u"JavaScript Confirm";
127      break;
128  }
129  if (!display_url.empty())
130    label += u" - " + display_url;
131
132  [alert setMessageText:base::SysUTF16ToNSString(label)];
133
134  [alert addButtonWithTitle:@"OK"];
135  if (!one_button) {
136    NSButton* other = [alert addButtonWithTitle:@"Cancel"];
137    [other setKeyEquivalent:@"\e"];
138  }
139
140  // Calling beginSheetModalForWindow:nil is wrong API usage. For now work
141  // around the "callee requires a non-null argument" error that occurs when
142  // building with the 10.11 SDK. See http://crbug.com/383820 for related
143  // discussion.
144  // We can't use the newer beginSheetModalForWindow:completionHandler: variant
145  // because it fails silently when passed a nil argument (see issue #2726).
146  id nilArg = nil;
147#pragma clang diagnostic push
148#pragma clang diagnostic ignored "-Wdeprecated-declarations"
149  [alert beginSheetModalForWindow:nilArg  // nil here makes it app-modal
150                    modalDelegate:helper_
151                   didEndSelector:@selector(alertDidEnd:returnCode:contextInfo:)
152                      contextInfo:this];
153#pragma clang diagnostic pop
154
155  if ([alert accessoryView])
156    [[alert window] makeFirstResponder:[alert accessoryView]];
157}
158
159void CefJavaScriptDialogRunnerMac::Cancel() {
160  if (helper_.get()) {
161    [helper_ cancel];
162    helper_.reset(nil);
163  }
164}
165
166void CefJavaScriptDialogRunnerMac::DialogClosed(
167    bool success,
168    const std::u16string& user_input) {
169  helper_.reset(nil);
170  std::move(callback_).Run(success, user_input);
171}
172