Integrate the Windows 8 code into the Chromium tree.

win8/metro_driver/metro_dialog_box.cc

Index: win8/metro_driver/metro_dialog_box.cc
diff --git a/win8/metro_driver/metro_dialog_box.cc b/win8/metro_driver/metro_dialog_box.cc
new file mode 100644
index 0000000000000000000000000000000000000000..25e70827710326f905bc8c3f7fe9a40e6f9aead3
--- /dev/null
+++ b/win8/metro_driver/metro_dialog_box.cc
@@ -0,0 +1,160 @@
+// 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.
+
+#include "win8/metro_driver/stdafx.h"
+
+#include "win8/metro_driver/chrome_app_view.h"
+#include "win8/metro_driver/metro_dialog_box.h"
+#include "win8/metro_driver/winrt_utils.h"
+
+typedef winfoundtn::Collections::
+    IVector<ABI::Windows::UI::Popups::IUICommand*> WindowsUICommands;
+
+typedef winfoundtn::IAsyncOperation<ABI::Windows::UI::Popups::IUICommand*>
+    AsyncCommandStatus;
+
+MetroDialogBox::MetroDialogBox() {
+  DVLOG(1) << __FUNCTION__;
+  dialog_box_info_.button1_handler = NULL;
+  dialog_box_info_.button2_handler = NULL;
+}
+
+MetroDialogBox::~MetroDialogBox() {
+  DVLOG(1) << __FUNCTION__;
+}
+
+void MetroDialogBox::Show(
+    const DialogBoxInfo& dialog_box_info) {
+  DVLOG(1) << __FUNCTION__;
+
+  // Only one dialog can be displayed at a given time.
+  DCHECK(dialog_box_.Get() == NULL);
+
+  // The message dialog display does not work correctly in snapped mode.
+  mswr::ComPtr<winui::Popups::IMessageDialogFactory> message_dialog_factory;
+  HRESULT hr = winrt_utils::CreateActivationFactory(
+      RuntimeClass_Windows_UI_Popups_MessageDialog,
+      message_dialog_factory.GetAddressOf());
+  CheckHR(hr, "Failed to activate IMessageDialogFactory");
+
+  mswrw::HString message_title;
+  message_title.Attach(MakeHString(dialog_box_info.title));
+
+  mswrw::HString message_content;
+  message_content.Attach(MakeHString(dialog_box_info.content));
+
+  hr = message_dialog_factory->CreateWithTitle(
+      message_content.Get(),
+      message_title.Get(),
+      dialog_box_.GetAddressOf());
+  CheckHR(hr, "Failed to create message dialog");
+
+  mswr::ComPtr<WindowsUICommands> commands;
+  hr = dialog_box_->get_Commands(commands.GetAddressOf());
+  CheckHR(hr, "Failed to create ui command collection");
+
+  mswr::ComPtr<winui::Popups::IUICommandFactory> ui_command_factory;
+  hr = winrt_utils::CreateActivationFactory(
+      RuntimeClass_Windows_UI_Popups_UICommand,
+      ui_command_factory.GetAddressOf());
+  CheckHR(hr, "Failed to activate IUICommandFactory");
+
+  mswrw::HString label1;
+  label1.Attach(MakeHString(dialog_box_info.button1_label));
+
+  mswr::ComPtr<winui::Popups::IUICommand> label1_command;
+  hr = ui_command_factory->CreateWithHandler(
+      label1.Get(), this, label1_command.GetAddressOf());
+  CheckHR(hr, "Failed to add button1");
+
+  mswrw::HString label2;
+  label2.Attach(MakeHString(dialog_box_info.button2_label));
+
+  mswr::ComPtr<winui::Popups::IUICommand> label2_command;
+  hr = ui_command_factory->CreateWithHandler(label2.Get(), this,
+                                             label2_command.GetAddressOf());
+  CheckHR(hr, "Failed to add button2");
+
+  commands->Append(label1_command.Get());
+  commands->Append(label2_command.Get());
+
+  mswr::ComPtr<AsyncCommandStatus> ret;
+  hr = dialog_box_->ShowAsync(ret.GetAddressOf());
+  CheckHR(hr, "Failed to show dialog");
+
+  dialog_box_info_ = dialog_box_info;
+}
+
+// The dialog box displayed via the MessageDialog interface has the class name
+// 'Shell_Dialog'. The dialog box is top level window. To find it we enumerate
+// all top level windows and compare the class names. If we find a matching
+// window class we compare its process id with ours and return the same.
+BOOL CALLBACK DialogBoxFinder(HWND hwnd, LPARAM lparam) {
+  char classname[MAX_PATH] = {0};
+
+  if (::GetClassNameA(hwnd, classname, ARRAYSIZE(classname))) {
+    if (lstrcmpiA("Shell_Dialog", classname) == 0) {
+      if (GetWindowLong(hwnd, GWL_EXSTYLE) & WS_EX_TOPMOST) {
+        DVLOG(1) << "Found top most dialog box: " << classname;
+        DVLOG(1) << "HWND: " << hwnd;
+        DWORD window_pid = 0;
+        DWORD window_tid = GetWindowThreadProcessId(hwnd, &window_pid);
+        DVLOG(1) << "Window tid: " << window_tid;
+        DVLOG(1) << "Window pid: " << window_pid;
+
+        if (window_pid == ::GetCurrentProcessId()) {
+          HWND* dialog_window = reinterpret_cast<HWND*>(lparam);
+          *dialog_window = hwnd;
+          return FALSE;
+        }
+      }
+    }
+  }
+  return TRUE;
+}
+
+void MetroDialogBox::Dismiss() {
+  DVLOG(1) << __FUNCTION__;
+  if (!dialog_box_)
+    return;
+
+  dialog_box_info_.button1_handler = NULL;
+  dialog_box_info_.button2_handler = NULL;
+  dialog_box_info_.button1_label.clear();
+  dialog_box_info_.button2_label.clear();
+  dialog_box_.Reset();
+
+  // We don't have a good way to dismiss the dialog box. Hack for now is to
+  // find the dialog box class in our process and close it via the WM_CLOSE
+  // message.
+  HWND dialog_box = NULL;
+  ::EnumWindows(&DialogBoxFinder, reinterpret_cast<LPARAM>(&dialog_box));
+  if (::IsWindow(dialog_box))
+    PostMessage(dialog_box, WM_CLOSE, 0, 0);
+}
+
+HRESULT STDMETHODCALLTYPE MetroDialogBox::Invoke(
+    winui::Popups::IUICommand* command) {
+  DVLOG(1) << __FUNCTION__;
+
+  mswrw::HString label;
+  command->get_Label(label.GetAddressOf());
+
+  string16 button_label = MakeStdWString(label.Get());
+  DVLOG(1) << "Clicked button label is : " << button_label;
+  if (button_label == dialog_box_info_.button1_label) {
+    DVLOG(1) << "Button1 clicked";
+    DCHECK(dialog_box_info_.button1_handler);
+    dialog_box_info_.button1_handler();
+  } else if (button_label == dialog_box_info_.button2_label) {
+    DVLOG(1) << "Button2 clicked";
+    DCHECK(dialog_box_info_.button2_handler);
+    dialog_box_info_.button2_handler();
+  }
+  // The dialog box is destroyed once we return from invoke. Go ahead and
+  // dismiss it.
+  Dismiss();
+  return S_OK;
+}
+