Prevent showing multiple network config views.

chrome/browser/chromeos/options/network_config_view.h

 // 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.
 
 #ifndef CHROME_BROWSER_CHROMEOS_OPTIONS_NETWORK_CONFIG_VIEW_H_
 #define CHROME_BROWSER_CHROMEOS_OPTIONS_NETWORK_CONFIG_VIEW_H_
 #pragma once
 
 #include <string>
 
@@ skipping 24 matching lines @@
     // Called when dialog "OK" button is pressed.
     virtual void OnDialogAccepted() = 0;
 
     // Called when dialog "Cancel" button is pressed.
     virtual void OnDialogCancelled() = 0;
 
    protected:
      virtual ~Delegate() {}
   };
 
-  // Login dialog for known networks.
-  explicit NetworkConfigView(Network* network);
-  // Login dialog for new/hidden networks.
-  explicit NetworkConfigView(ConnectionType type);
-  virtual ~NetworkConfigView() {}
+  // Shows a network connection dialog if none is currently visible.
+  // Returns false if a dialog is already visible.
+  static bool Show(Network* network, gfx::NativeWindow parent);
+  static bool ShowForType(ConnectionType type, gfx::NativeWindow parent);
 
   // Returns corresponding native window.
   gfx::NativeWindow GetNativeWindow() const;
 
   // views::DialogDelegate methods.
   virtual string16 GetDialogButtonLabel(ui::DialogButton button) const OVERRIDE;
   virtual bool IsDialogButtonEnabled(ui::DialogButton button) const OVERRIDE;
   virtual bool Cancel() OVERRIDE;
   virtual bool Accept() OVERRIDE;
   virtual views::View* GetExtraView() OVERRIDE;
@@ skipping 17 matching lines @@
 
  protected:
   // views::View overrides:
   virtual void Layout() OVERRIDE;
   virtual gfx::Size GetPreferredSize() OVERRIDE;
   virtual void ViewHierarchyChanged(bool is_add,
                                     views::View* parent,
                                     views::View* child) OVERRIDE;
 
  private:
+  // Login dialog for known networks.
+  explicit NetworkConfigView(Network* network);
+  // Login dialog for new/hidden networks.
+  explicit NetworkConfigView(ConnectionType type);
+  virtual ~NetworkConfigView();
+
   // Creates an "Advanced" button in the lower-left corner of the dialog.
   void CreateAdvancedButton();
 
   // Resets the underlying view to show advanced options.
   void ShowAdvancedView();
 
   // There's always only one child view, which will get deleted when
   // NetworkConfigView gets cleaned up.
   ChildNetworkConfigView* child_config_view_;
 
@@ skipping 74 matching lines @@
   views::ImageView* image_view_;
   const SkBitmap* gray_image_;
   const SkBitmap* color_image_;
 
   DISALLOW_COPY_AND_ASSIGN(ControlledSettingIndicatorView);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_OPTIONS_NETWORK_CONFIG_VIEW_H_