remoting/host/continue_window_mac.mm

   1 // Copyright (c) 2012 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 #import <Cocoa/Cocoa.h>
   6
   7 #include "base/compiler_specific.h"
   8 #include "base/logging.h"
   9 #include "base/mac/scoped_nsautorelease_pool.h"
  10 #include "base/mac/scoped_nsobject.h"
  11 #include "base/strings/sys_string_conversions.h"
  12 #include "remoting/base/string_resources.h"
  13 #include "remoting/host/continue_window.h"
  14 #include "ui/base/l10n/l10n_util_mac.h"
  15
  16 // Handles the ContinueWindow.
  17 @interface ContinueWindowMacController : NSObject {
  18  @private
  19   base::scoped_nsobject<NSMutableArray> shades_;
  20   base::scoped_nsobject<NSAlert> continue_alert_;
  21   remoting::ContinueWindow* continue_window_;
  22 }
  23
  24 - (id)initWithWindow:(remoting::ContinueWindow*)continue_window;
  25 - (void)show;
  26 - (void)hide;
  27 - (void)onCancel:(id)sender;
  28 - (void)onContinue:(id)sender;
  29 @end
  30
  31 namespace remoting {
  32
  33 // A bridge between C++ and ObjC implementations of ContinueWindow.
  34 // Everything important occurs in ContinueWindowMacController.
  35 class ContinueWindowMac : public ContinueWindow {
  36  public:
  37   ContinueWindowMac();
  38   virtual ~ContinueWindowMac();
  39
  40  protected:
  41   // ContinueWindow overrides.
  42   virtual void ShowUi() OVERRIDE;
  43   virtual void HideUi() OVERRIDE;
  44
  45  private:
  46   base::scoped_nsobject<ContinueWindowMacController> controller_;
  47
  48   DISALLOW_COPY_AND_ASSIGN(ContinueWindowMac);
  49 };
  50
  51 ContinueWindowMac::ContinueWindowMac() {
  52 }
  53
  54 ContinueWindowMac::~ContinueWindowMac() {
  55   DCHECK(CalledOnValidThread());
  56 }
  57
  58 void ContinueWindowMac::ShowUi() {
  59   DCHECK(CalledOnValidThread());
  60
  61   base::mac::ScopedNSAutoreleasePool pool;
  62   controller_.reset(
  63       [[ContinueWindowMacController alloc] initWithWindow:this]);
  64   [controller_ show];
  65 }
  66
  67 void ContinueWindowMac::HideUi() {
  68   DCHECK(CalledOnValidThread());
  69
  70   base::mac::ScopedNSAutoreleasePool pool;
  71   [controller_ hide];
  72 }
  73
  74 // static
  75 scoped_ptr<HostWindow> HostWindow::CreateContinueWindow() {
  76   return scoped_ptr<HostWindow>(new ContinueWindowMac());
  77 }
  78
  79 }  // namespace remoting
  80
  81 @implementation ContinueWindowMacController
  82
  83 - (id)initWithWindow:(remoting::ContinueWindow*)continue_window {
  84   if ((self = [super init])) {
  85     continue_window_ = continue_window;
  86   }
  87   return self;
  88 }
  89
  90 - (void)show {
  91   // Generate window shade
  92   NSArray* screens = [NSScreen screens];
  93   shades_.reset([[NSMutableArray alloc] initWithCapacity:[screens count]]);
  94   for (NSScreen *screen in screens) {
  95     NSWindow* shade =
  96       [[[NSWindow alloc] initWithContentRect:[screen frame]
  97                                    styleMask:NSBorderlessWindowMask
  98                                      backing:NSBackingStoreBuffered
  99                                        defer:NO
 100                                       screen:screen] autorelease];
 101     [shade setReleasedWhenClosed:NO];
 102     [shade setAlphaValue:0.8];
 103     [shade setOpaque:NO];
 104     [shade setBackgroundColor:[NSColor blackColor]];
 105     // Raise the window shade above just about everything else.
 106     // Leave the dock and menu bar exposed so the user has some basic level
 107     // of control (like they can quit Chromium).
 108     [shade setLevel:NSModalPanelWindowLevel - 1];
 109     [shade orderFront:nil];
 110     [shades_ addObject:shade];
 111   }
 112
 113   // Create alert.
 114   continue_alert_.reset([[NSAlert alloc] init]);
 115   [continue_alert_ setMessageText:l10n_util::GetNSString(IDR_CONTINUE_PROMPT)];
 116
 117   NSButton* continue_button =
 118       [continue_alert_ addButtonWithTitle:l10n_util::GetNSString(
 119           IDR_CONTINUE_BUTTON)];
 120   [continue_button setAction:@selector(onContinue:)];
 121   [continue_button setTarget:self];
 122
 123   NSButton* cancel_button =
 124       [continue_alert_ addButtonWithTitle:l10n_util::GetNSString(
 125           IDR_STOP_SHARING_BUTTON)];
 126   [cancel_button setAction:@selector(onCancel:)];
 127   [cancel_button setTarget:self];
 128
 129   NSBundle *bundle = [NSBundle bundleForClass:[self class]];
 130   NSString *imagePath = [bundle pathForResource:@"chromoting128" ofType:@"png"];
 131   base::scoped_nsobject<NSImage> image(
 132       [[NSImage alloc] initByReferencingFile:imagePath]);
 133   [continue_alert_ setIcon:image];
 134   [continue_alert_ layout];
 135
 136   // Force alert to be at the proper level and location.
 137   NSWindow* continue_window = [continue_alert_ window];
 138   [continue_window center];
 139   [continue_window setLevel:NSModalPanelWindowLevel];
 140   [continue_window orderWindow:NSWindowAbove
 141                     relativeTo:[[shades_ lastObject] windowNumber]];
 142   [continue_window makeKeyWindow];
 143 }
 144
 145 - (void)hide {
 146   // Remove window shade.
 147   for (NSWindow* window in shades_.get()) {
 148     [window close];
 149   }
 150   shades_.reset();
 151   continue_alert_.reset();
 152 }
 153
 154 - (void)onCancel:(id)sender {
 155   [self hide];
 156   continue_window_->DisconnectSession();
 157 }
 158
 159 - (void)onContinue:(id)sender {
 160   [self hide];
 161   continue_window_->ContinueSession();
 162 }
 163
 164 @end