src/ui/message_center/cocoa/popup_controller.mm

   1 // Copyright (c) 2013 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 "ui/message_center/cocoa/popup_controller.h"
   6
   7 #include <cmath>
   8
   9 #import "base/mac/foundation_util.h"
  10 #import "base/mac/sdk_forward_declarations.h"
  11 #import "ui/base/cocoa/window_size_constants.h"
  12 #import "ui/message_center/cocoa/notification_controller.h"
  13 #import "ui/message_center/cocoa/popup_collection.h"
  14 #include "ui/message_center/message_center.h"
  15
  16 #if !defined(MAC_OS_X_VERSION_10_7) || \
  17     MAC_OS_X_VERSION_MAX_ALLOWED < MAC_OS_X_VERSION_10_7
  18 enum {
  19   NSWindowCollectionBehaviorFullScreenAuxiliary = 1 << 8
  20 };
  21 #endif  // MAC_OS_X_VERSION_10_7
  22
  23 ////////////////////////////////////////////////////////////////////////////////
  24
  25 @interface MCPopupController (Private)
  26 - (void)notificationSwipeStarted;
  27 - (void)notificationSwipeMoved:(CGFloat)amount;
  28 - (void)notificationSwipeEnded:(BOOL)ended complete:(BOOL)isComplete;
  29 @end
  30
  31 // Window Subclass /////////////////////////////////////////////////////////////
  32
  33 @interface MCPopupWindow : NSPanel {
  34   // The cumulative X and Y scrollingDeltas since the -scrollWheel: event began.
  35   NSPoint totalScrollDelta_;
  36 }
  37 @end
  38
  39 @implementation MCPopupWindow
  40
  41 - (void)scrollWheel:(NSEvent*)event {
  42   // Gesture swiping only exists on 10.7+.
  43   if (![event respondsToSelector:@selector(phase)])
  44     return;
  45
  46   NSEventPhase phase = [event phase];
  47   BOOL shouldTrackSwipe = NO;
  48
  49   if (phase == NSEventPhaseBegan) {
  50     totalScrollDelta_ = NSZeroPoint;
  51   } else if (phase == NSEventPhaseChanged) {
  52     shouldTrackSwipe = YES;
  53     totalScrollDelta_.x += [event scrollingDeltaX];
  54     totalScrollDelta_.y += [event scrollingDeltaY];
  55   }
  56
  57   // Only allow horizontal scrolling.
  58   if (std::abs(totalScrollDelta_.x) < std::abs(totalScrollDelta_.y))
  59     return;
  60
  61   if (shouldTrackSwipe) {
  62     MCPopupController* controller =
  63         base::mac::ObjCCastStrict<MCPopupController>([self windowController]);
  64     BOOL directionInverted = [event isDirectionInvertedFromDevice];
  65
  66     auto handler = ^(CGFloat gestureAmount, NSEventPhase phase,
  67                      BOOL isComplete, BOOL* stop) {
  68         // The swipe direction should match the direction the user's fingers
  69         // are moving, not the interpreted scroll direction.
  70         if (directionInverted)
  71           gestureAmount *= -1;
  72
  73         if (phase == NSEventPhaseBegan) {
  74           [controller notificationSwipeStarted];
  75           return;
  76         }
  77
  78         [controller notificationSwipeMoved:gestureAmount];
  79
  80         BOOL ended = phase == NSEventPhaseEnded;
  81         if (ended || isComplete)
  82           [controller notificationSwipeEnded:ended complete:isComplete];
  83     };
  84     [event trackSwipeEventWithOptions:NSEventSwipeTrackingLockDirection
  85              dampenAmountThresholdMin:-1
  86                                   max:1
  87                          usingHandler:handler];
  88   }
  89 }
  90
  91 @end
  92
  93 ////////////////////////////////////////////////////////////////////////////////
  94
  95 @implementation MCPopupController
  96
  97 - (id)initWithNotification:(const message_center::Notification*)notification
  98              messageCenter:(message_center::MessageCenter*)messageCenter
  99            popupCollection:(MCPopupCollection*)popupCollection {
 100   base::scoped_nsobject<MCPopupWindow> window(
 101       [[MCPopupWindow alloc] initWithContentRect:ui::kWindowSizeDeterminedLater
 102                                        styleMask:NSBorderlessWindowMask |
 103                                                  NSNonactivatingPanelMask
 104                                          backing:NSBackingStoreBuffered
 105                                            defer:YES]);
 106   if ((self = [super initWithWindow:window])) {
 107     messageCenter_ = messageCenter;
 108     popupCollection_ = popupCollection;
 109     notificationController_.reset(
 110         [[MCNotificationController alloc] initWithNotification:notification
 111                                                  messageCenter:messageCenter_]);
 112     isClosing_ = NO;
 113     bounds_ = [[notificationController_ view] frame];
 114
 115     [window setReleasedWhenClosed:NO];
 116
 117     [window setLevel:NSFloatingWindowLevel];
 118     [window setExcludedFromWindowsMenu:YES];
 119     [window setCollectionBehavior:
 120         NSWindowCollectionBehaviorIgnoresCycle |
 121         NSWindowCollectionBehaviorFullScreenAuxiliary];
 122
 123     [window setHasShadow:YES];
 124     [window setContentView:[notificationController_ view]];
 125
 126     trackingArea_.reset(
 127         [[CrTrackingArea alloc] initWithRect:NSZeroRect
 128                                      options:NSTrackingInVisibleRect |
 129                                              NSTrackingMouseEnteredAndExited |
 130                                              NSTrackingActiveAlways
 131                                        owner:self
 132                                     userInfo:nil]);
 133     [[window contentView] addTrackingArea:trackingArea_.get()];
 134   }
 135   return self;
 136 }
 137
 138 - (void)close {
 139   if (boundsAnimation_) {
 140     [boundsAnimation_ stopAnimation];
 141     [boundsAnimation_ setDelegate:nil];
 142     boundsAnimation_.reset();
 143   }
 144   if (trackingArea_.get())
 145     [[[self window] contentView] removeTrackingArea:trackingArea_.get()];
 146   [super close];
 147   [self performSelectorOnMainThread:@selector(release)
 148                          withObject:nil
 149                       waitUntilDone:NO
 150                               modes:@[ NSDefaultRunLoopMode ]];
 151 }
 152
 153 - (MCNotificationController*)notificationController {
 154   return notificationController_.get();
 155 }
 156
 157 - (const message_center::Notification*)notification {
 158   return [notificationController_ notification];
 159 }
 160
 161 - (const std::string&)notificationID {
 162   return [notificationController_ notificationID];
 163 }
 164
 165 // Private /////////////////////////////////////////////////////////////////////
 166
 167 - (void)notificationSwipeStarted {
 168   originalFrame_ = [[self window] frame];
 169   swipeGestureEnded_ = NO;
 170 }
 171
 172 - (void)notificationSwipeMoved:(CGFloat)amount {
 173   NSWindow* window = [self window];
 174
 175   [window setAlphaValue:1.0 - std::abs(amount)];
 176   NSRect frame = [window frame];
 177   CGFloat originalMin = NSMinX(originalFrame_);
 178   frame.origin.x = originalMin + (NSMidX(originalFrame_) - originalMin) *
 179                    -amount;
 180   [window setFrame:frame display:YES];
 181 }
 182
 183 - (void)notificationSwipeEnded:(BOOL)ended complete:(BOOL)isComplete {
 184   swipeGestureEnded_ |= ended;
 185   if (swipeGestureEnded_ && isComplete) {
 186     messageCenter_->RemoveNotification([self notificationID], /*by_user=*/true);
 187     [popupCollection_ onPopupAnimationEnded:[self notificationID]];
 188   }
 189 }
 190
 191 - (void)animationDidEnd:(NSAnimation*)animation {
 192   if (animation != boundsAnimation_.get())
 193     return;
 194   boundsAnimation_.reset();
 195
 196   [popupCollection_ onPopupAnimationEnded:[self notificationID]];
 197
 198   if (isClosing_)
 199     [self close];
 200 }
 201
 202 - (void)showWithAnimation:(NSRect)newBounds {
 203   bounds_ = newBounds;
 204   NSRect startBounds = newBounds;
 205   startBounds.origin.x += startBounds.size.width;
 206   [[self window] setFrame:startBounds display:NO];
 207   [[self window] setAlphaValue:0];
 208   [self showWindow:nil];
 209
 210   // Slide-in and fade-in simultaneously.
 211   NSDictionary* animationDict = @{
 212     NSViewAnimationTargetKey : [self window],
 213     NSViewAnimationEndFrameKey : [NSValue valueWithRect:newBounds],
 214     NSViewAnimationEffectKey : NSViewAnimationFadeInEffect
 215   };
 216   DCHECK(!boundsAnimation_);
 217   boundsAnimation_.reset([[NSViewAnimation alloc]
 218       initWithViewAnimations:[NSArray arrayWithObject:animationDict]]);
 219   [boundsAnimation_ setDuration:[popupCollection_ popupAnimationDuration]];
 220   [boundsAnimation_ setDelegate:self];
 221   [boundsAnimation_ startAnimation];
 222 }
 223
 224 - (void)closeWithAnimation {
 225   if (isClosing_)
 226     return;
 227
 228   isClosing_ = YES;
 229
 230   // If the notification was swiped closed, do not animate it as the
 231   // notification has already faded out.
 232   if (swipeGestureEnded_) {
 233     [self close];
 234     return;
 235   }
 236
 237   NSDictionary* animationDict = @{
 238     NSViewAnimationTargetKey : [self window],
 239     NSViewAnimationEffectKey : NSViewAnimationFadeOutEffect
 240   };
 241   DCHECK(!boundsAnimation_);
 242   boundsAnimation_.reset([[NSViewAnimation alloc]
 243       initWithViewAnimations:[NSArray arrayWithObject:animationDict]]);
 244   [boundsAnimation_ setDuration:[popupCollection_ popupAnimationDuration]];
 245   [boundsAnimation_ setDelegate:self];
 246   [boundsAnimation_ startAnimation];
 247 }
 248
 249 - (void)markPopupCollectionGone {
 250   popupCollection_ = nil;
 251 }
 252
 253 - (NSRect)bounds {
 254   return bounds_;
 255 }
 256
 257 - (void)setBounds:(NSRect)newBounds {
 258   if (isClosing_ || NSEqualRects(bounds_ , newBounds))
 259     return;
 260   bounds_ = newBounds;
 261
 262   NSDictionary* animationDict = @{
 263     NSViewAnimationTargetKey :   [self window],
 264     NSViewAnimationEndFrameKey : [NSValue valueWithRect:newBounds]
 265   };
 266   DCHECK(!boundsAnimation_);
 267   boundsAnimation_.reset([[NSViewAnimation alloc]
 268       initWithViewAnimations:[NSArray arrayWithObject:animationDict]]);
 269   [boundsAnimation_ setDuration:[popupCollection_ popupAnimationDuration]];
 270   [boundsAnimation_ setDelegate:self];
 271   [boundsAnimation_ startAnimation];
 272 }
 273
 274 - (void)mouseEntered:(NSEvent*)event {
 275   messageCenter_->PausePopupTimers();
 276 }
 277
 278 - (void)mouseExited:(NSEvent*)event {
 279   messageCenter_->RestartPopupTimers();
 280 }
 281
 282 @end