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      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 #ifndef CHROME_BROWSER_FIRST_RUN_TRY_CHROME_DIALOG_VIEW_H_
      6 #define CHROME_BROWSER_FIRST_RUN_TRY_CHROME_DIALOG_VIEW_H_
      7 #pragma once
      8 
      9 #include "base/basictypes.h"
     10 #include "base/compiler_specific.h"
     11 #include "views/controls/button/button.h"
     12 #include "views/controls/link.h"
     13 #include "ui/gfx/native_widget_types.h"
     14 
     15 class ProcessSingleton;
     16 
     17 namespace gfx {
     18 class Rect;
     19 }
     20 
     21 namespace views {
     22 class RadioButton;
     23 class Widget;
     24 }
     25 
     26 // This class displays a modal dialog using the views system. The dialog asks
     27 // the user to give chrome another try. This class only handles the UI so the
     28 // resulting actions are up to the caller. One version looks like this:
     29 //
     30 //   +-----------------------------------------------+
     31 //   | |icon| You stopped using Google Chrome    [x] |
     32 //   | |icon| Would you like to:                     |
     33 //   |        [o] Give the new version a try         |
     34 //   |        [ ] Uninstall Google Chrome            |
     35 //   |        [ OK ] [Don't bug me]                  |
     36 //   |                                               |
     37 //   |        _why_am_I_seeing this?_                |
     38 //   +-----------------------------------------------+
     39 //
     40 class TryChromeDialogView : public views::ButtonListener,
     41                             public views::LinkController {
     42  public:
     43   enum Result {
     44     TRY_CHROME,          // Launch chrome right now.
     45     NOT_NOW,             // Don't launch chrome. Exit now.
     46     UNINSTALL_CHROME,    // Initiate chrome uninstall and exit.
     47     DIALOG_ERROR,        // An error occurred creating the dialog.
     48     COUNT
     49   };
     50 
     51   // Shows a modal dialog asking the user to give chrome another try. See
     52   // above for the possible outcomes of the function. This is an experimental,
     53   // non-localized dialog.
     54   // |version| can be 0, 1 or 2 and selects what strings to present.
     55   // |process_singleton| needs to be valid and it will be locked while
     56   // the dialog is shown.
     57   // Note that the dialog has no parent and it will position itself in a lower
     58   // corner of the screen. The dialog does not steal focus and does not have an
     59   // entry in the taskbar.
     60   static Result Show(size_t version, ProcessSingleton* process_singleton);
     61 
     62  private:
     63   enum ButtonTags {
     64     BT_NONE,
     65     BT_CLOSE_BUTTON,
     66     BT_OK_BUTTON,
     67   };
     68 
     69   explicit TryChromeDialogView(size_t version);
     70   virtual ~TryChromeDialogView();
     71 
     72   Result ShowModal(ProcessSingleton* process_singleton);
     73 
     74   // Returns a screen rectangle that is fit to show the window. In particular
     75   // it has the following properties: a) is visible and b) is attached to the
     76   // bottom of the working area. For LTR machines it returns a left side
     77   // rectangle and for RTL it returns a right side rectangle so that the dialog
     78   // does not compete with the standar place of the start menu.
     79   gfx::Rect ComputeWindowPosition(int width, int height, bool is_RTL);
     80 
     81   // Create a windows region that looks like a toast of width |w| and height
     82   // |h|. This is best effort, so we don't care much if the operation fails.
     83   void SetToastRegion(gfx::NativeWindow window, int w, int h);
     84 
     85   // views::ButtonListener:
     86   // We have two buttons and according to what the user clicked we set |result_|
     87   // and we should always close and end the modal loop.
     88   virtual void ButtonPressed(views::Button* sender,
     89                              const views::Event& event) OVERRIDE;
     90 
     91   // views::LinkController:
     92   // If the user selects the link we need to fire off the default browser that
     93   // by some convoluted logic should not be chrome.
     94   virtual void LinkActivated(views::Link* source, int event_flags) OVERRIDE;
     95 
     96   // Controls which version of the text to use.
     97   size_t version_;
     98 
     99   // We don't own any of these pointers. The |popup_| owns itself and owns the
    100   // other views.
    101   views::Widget* popup_;
    102   views::RadioButton* try_chrome_;
    103   views::RadioButton* kill_chrome_;
    104   Result result_;
    105 
    106   DISALLOW_COPY_AND_ASSIGN(TryChromeDialogView);
    107 };
    108 
    109 #endif  // CHROME_BROWSER_FIRST_RUN_TRY_CHROME_DIALOG_VIEW_H_
    110