1 // Copyright (c) 2011 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 "chrome/browser/ui/app_modal_dialogs/js_modal_dialog.h"
6
7 #include "base/string_util.h"
8 #include "base/utf_string_conversions.h"
9 #include "chrome/browser/browser_shutdown.h"
10 #include "chrome/browser/extensions/extension_host.h"
11 #include "chrome/browser/ui/app_modal_dialogs/native_app_modal_dialog.h"
12 #include "content/browser/tab_contents/tab_contents.h"
13 #include "content/common/notification_service.h"
14 #include "content/common/notification_type.h"
15 #include "ui/base/text/text_elider.h"
16
17 namespace {
18
19 // Control maximum sizes of various texts passed to us from javascript.
20 #ifdef OS_LINUX
21 // Two-dimensional eliding. Reformat the text of the message dialog
22 // inserting line breaks because otherwise a single long line can overflow
23 // the message dialog (and crash/hang the GTK, depending on the version).
24 const int kMessageTextMaxRows = 32;
25 const int kMessageTextMaxCols = 132;
26 const int kDefaultPromptMaxRows = 24;
27 const int kDefaultPromptMaxCols = 132;
EnforceMaxTextSize(const string16 & in_string,string16 * out_string)28 void EnforceMaxTextSize(const string16& in_string, string16* out_string) {
29 ui::ElideRectangleString(in_string, kMessageTextMaxRows,
30 kMessageTextMaxCols, false, out_string);
31 }
EnforceMaxPromptSize(const string16 & in_string,string16 * out_string)32 void EnforceMaxPromptSize(const string16& in_string, string16* out_string) {
33 ui::ElideRectangleString(in_string, kDefaultPromptMaxRows,
34 kDefaultPromptMaxCols, false, out_string);
35 }
36 #else
37 // One-dimensional eliding. Trust the window system to break the string
38 // appropriately, but limit its overall length to something reasonable.
39 const int kMessageTextMaxSize = 3000;
40 const int kDefaultPromptMaxSize = 2000;
41 void EnforceMaxTextSize(const string16& in_string, string16* out_string) {
42 ui::ElideString(in_string, kMessageTextMaxSize, out_string);
43 }
44 void EnforceMaxPromptSize(const string16& in_string, string16* out_string) {
45 ui::ElideString(in_string, kDefaultPromptMaxSize, out_string);
46 }
47 #endif
48
49 } // namespace
50
JavaScriptAppModalDialog(JavaScriptAppModalDialogDelegate * delegate,const std::wstring & title,int dialog_flags,const std::wstring & message_text,const std::wstring & default_prompt_text,bool display_suppress_checkbox,bool is_before_unload_dialog,IPC::Message * reply_msg)51 JavaScriptAppModalDialog::JavaScriptAppModalDialog(
52 JavaScriptAppModalDialogDelegate* delegate,
53 const std::wstring& title,
54 int dialog_flags,
55 const std::wstring& message_text,
56 const std::wstring& default_prompt_text,
57 bool display_suppress_checkbox,
58 bool is_before_unload_dialog,
59 IPC::Message* reply_msg)
60 : AppModalDialog(delegate->AsTabContents(), title),
61 delegate_(delegate),
62 extension_host_(delegate->AsExtensionHost()),
63 dialog_flags_(dialog_flags),
64 display_suppress_checkbox_(display_suppress_checkbox),
65 is_before_unload_dialog_(is_before_unload_dialog),
66 reply_msg_(reply_msg) {
67 string16 elided_text;
68 EnforceMaxTextSize(WideToUTF16(message_text), &elided_text);
69 message_text_ = UTF16ToWide(elided_text);
70 EnforceMaxPromptSize(WideToUTF16Hack(default_prompt_text),
71 &default_prompt_text_);
72
73 DCHECK((tab_contents_ != NULL) != (extension_host_ != NULL));
74 InitNotifications();
75 }
76
~JavaScriptAppModalDialog()77 JavaScriptAppModalDialog::~JavaScriptAppModalDialog() {
78 }
79
CreateNativeDialog()80 NativeAppModalDialog* JavaScriptAppModalDialog::CreateNativeDialog() {
81 gfx::NativeWindow parent_window = tab_contents_ ?
82 tab_contents_->GetMessageBoxRootWindow() :
83 extension_host_->GetMessageBoxRootWindow();
84 return NativeAppModalDialog::CreateNativeJavaScriptPrompt(this,
85 parent_window);
86 }
87
Observe(NotificationType type,const NotificationSource & source,const NotificationDetails & details)88 void JavaScriptAppModalDialog::Observe(NotificationType type,
89 const NotificationSource& source,
90 const NotificationDetails& details) {
91 if (skip_this_dialog_)
92 return;
93
94 if (NotificationType::EXTENSION_HOST_DESTROYED == type &&
95 Details<ExtensionHost>(extension_host_) != details)
96 return;
97
98 // If we reach here, we know the notification is relevant to us, either
99 // because we're only observing applicable sources or because we passed the
100 // check above. Both of those indicate that we should ignore this dialog.
101 // Also clear the delegate, since it's now invalid.
102 skip_this_dialog_ = true;
103 delegate_ = NULL;
104 if (native_dialog_)
105 CloseModalDialog();
106 }
107
InitNotifications()108 void JavaScriptAppModalDialog::InitNotifications() {
109 // Make sure we get relevant navigation notifications so we know when our
110 // parent contents will disappear or navigate to a different page.
111 if (tab_contents_) {
112 registrar_.Add(this, NotificationType::NAV_ENTRY_COMMITTED,
113 Source<NavigationController>(&tab_contents_->controller()));
114 registrar_.Add(this, NotificationType::TAB_CONTENTS_DESTROYED,
115 Source<TabContents>(tab_contents_));
116 } else if (extension_host_) {
117 // EXTENSION_HOST_DESTROYED uses the Profile as its source, but we care
118 // about the ExtensionHost (which is passed in the details).
119 registrar_.Add(this, NotificationType::EXTENSION_HOST_DESTROYED,
120 NotificationService::AllSources());
121 } else {
122 NOTREACHED();
123 }
124 }
125
OnCancel(bool suppress_js_messages)126 void JavaScriptAppModalDialog::OnCancel(bool suppress_js_messages) {
127 // If we are shutting down and this is an onbeforeunload dialog, cancel the
128 // shutdown.
129 if (is_before_unload_dialog_)
130 browser_shutdown::SetTryingToQuit(false);
131
132 // We need to do this before WM_DESTROY (WindowClosing()) as any parent frame
133 // will receive its activation messages before this dialog receives
134 // WM_DESTROY. The parent frame would then try to activate any modal dialogs
135 // that were still open in the ModalDialogQueue, which would send activation
136 // back to this one. The framework should be improved to handle this, so this
137 // is a temporary workaround.
138 CompleteDialog();
139
140 NotifyDelegate(false, L"", suppress_js_messages);
141 }
142
OnAccept(const std::wstring & prompt_text,bool suppress_js_messages)143 void JavaScriptAppModalDialog::OnAccept(const std::wstring& prompt_text,
144 bool suppress_js_messages) {
145 CompleteDialog();
146 NotifyDelegate(true, prompt_text, suppress_js_messages);
147 }
148
OnClose()149 void JavaScriptAppModalDialog::OnClose() {
150 NotifyDelegate(false, L"", false);
151 }
152
NotifyDelegate(bool success,const std::wstring & prompt_text,bool suppress_js_messages)153 void JavaScriptAppModalDialog::NotifyDelegate(bool success,
154 const std::wstring& prompt_text,
155 bool suppress_js_messages) {
156 if (skip_this_dialog_)
157 return;
158
159 delegate_->OnMessageBoxClosed(reply_msg_, success, prompt_text);
160 if (suppress_js_messages)
161 delegate_->SetSuppressMessageBoxes(true);
162
163 // On Views, we can end up coming through this code path twice :(.
164 // See crbug.com/63732.
165 skip_this_dialog_ = true;
166 }
167