src/content/shell/browser/shell_javascript_dialog_mac.mm

   1 // Copyright 2013 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 #include "content/shell/browser/shell_javascript_dialog.h"
   6
   7 #import <Cocoa/Cocoa.h>
   8
   9 #import "base/mac/scoped_nsobject.h"
  10 #include "base/strings/sys_string_conversions.h"
  11 #include "content/shell/browser/shell_javascript_dialog_manager.h"
  12
  13 // Helper object that receives the notification that the dialog/sheet is
  14 // going away. Is responsible for cleaning itself up.
  15 @interface ShellJavaScriptDialogHelper : NSObject<NSAlertDelegate> {
  16  @private
  17   base::scoped_nsobject<NSAlert> alert_;
  18   NSTextField* textField_;  // WEAK; owned by alert_
  19
  20   // Copies of the fields in ShellJavaScriptDialog because they're private.
  21   content::ShellJavaScriptDialogManager* manager_;
  22   content::JavaScriptDialogManager::DialogClosedCallback callback_;
  23 }
  24
  25 - (id)initHelperWithManager:(content::ShellJavaScriptDialogManager*)manager
  26    andCallback:(content::JavaScriptDialogManager::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 ShellJavaScriptDialogHelper
  37
  38 - (id)initHelperWithManager:(content::ShellJavaScriptDialogManager*)manager
  39   andCallback:(content::JavaScriptDialogManager::DialogClosedCallback)callback {
  40   if (self = [super init]) {
  41     manager_ = manager;
  42     callback_ = callback;
  43   }
  44
  45   return self;
  46 }
  47
  48 - (NSAlert*)alert {
  49   alert_.reset([[NSAlert alloc] init]);
  50   return alert_;
  51 }
  52
  53 - (NSTextField*)textField {
  54   textField_ = [[NSTextField alloc] initWithFrame:NSMakeRect(0, 0, 300, 22)];
  55   [[textField_ cell] setLineBreakMode:NSLineBreakByTruncatingTail];
  56   [alert_ setAccessoryView:textField_];
  57   [textField_ release];
  58
  59   return textField_;
  60 }
  61
  62 - (void)alertDidEnd:(NSAlert*)alert
  63          returnCode:(int)returnCode
  64         contextInfo:(void*)contextInfo {
  65   if (returnCode == NSRunStoppedResponse)
  66     return;
  67
  68   bool success = returnCode == NSAlertFirstButtonReturn;
  69   string16 input;
  70   if (textField_)
  71     input = base::SysNSStringToUTF16([textField_ stringValue]);
  72
  73   content::ShellJavaScriptDialog* native_dialog =
  74       reinterpret_cast<content::ShellJavaScriptDialog*>(contextInfo);
  75   callback_.Run(success, input);
  76   manager_->DialogClosed(native_dialog);
  77 }
  78
  79 - (void)cancel {
  80   [NSApp endSheet:[alert_ window]];
  81   alert_.reset();
  82 }
  83
  84 @end
  85
  86 namespace content {
  87
  88 ShellJavaScriptDialog::ShellJavaScriptDialog(
  89     ShellJavaScriptDialogManager* manager,
  90     gfx::NativeWindow parent_window,
  91     JavaScriptMessageType message_type,
  92     const string16& message_text,
  93     const string16& default_prompt_text,
  94     const JavaScriptDialogManager::DialogClosedCallback& callback)
  95     : manager_(manager),
  96       callback_(callback) {
  97   bool text_field = message_type == JAVASCRIPT_MESSAGE_TYPE_PROMPT;
  98   bool one_button = message_type == JAVASCRIPT_MESSAGE_TYPE_ALERT;
  99
 100   helper_ =
 101       [[ShellJavaScriptDialogHelper alloc] initHelperWithManager:manager
 102                                                      andCallback:callback];
 103
 104   // Show the modal dialog.
 105   NSAlert* alert = [helper_ alert];
 106   NSTextField* field = nil;
 107   if (text_field) {
 108     field = [helper_ textField];
 109     [field setStringValue:base::SysUTF16ToNSString(default_prompt_text)];
 110   }
 111   [alert setDelegate:helper_];
 112   [alert setInformativeText:base::SysUTF16ToNSString(message_text)];
 113   [alert setMessageText:@"Javascript alert"];
 114   [alert addButtonWithTitle:@"OK"];
 115   if (!one_button) {
 116     NSButton* other = [alert addButtonWithTitle:@"Cancel"];
 117     [other setKeyEquivalent:@"\e"];
 118   }
 119
 120   [alert
 121       beginSheetModalForWindow:nil  // nil here makes it app-modal
 122                  modalDelegate:helper_
 123                 didEndSelector:@selector(alertDidEnd:returnCode:contextInfo:)
 124                    contextInfo:this];
 125
 126   if ([alert accessoryView])
 127     [[alert window] makeFirstResponder:[alert accessoryView]];
 128 }
 129
 130 ShellJavaScriptDialog::~ShellJavaScriptDialog() {
 131   [helper_ release];
 132 }
 133
 134 void ShellJavaScriptDialog::Cancel() {
 135   [helper_ cancel];
 136 }
 137
 138 }  // namespace content