chrome/browser/ui/cocoa/base_bubble_controller.h

   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/memory/scoped_ptr.h"
   8
   9 @class InfoBubbleView;
  10 class TabStripModelObserverBridge;
  11
  12 // Base class for bubble controllers. Manages a xib that contains an
  13 // InfoBubbleWindow which contains an InfoBubbleView. Contains code to close
  14 // the bubble window on clicks outside of the window, and the like.
  15 // To use this class:
  16 // 1. Create a new xib that contains a window. Change the window's class to
  17 //    InfoBubbleWindow. Give it a child view that autosizes to the window's full
  18 //    size, give it class InfoBubbleView. Make the controller the window's
  19 //    delegate.
  20 // 2. Create a subclass of BaseBubbleController.
  21 // 3. Change the xib's File Owner to your subclass.
  22 // 4. Hook up the File Owner's |bubble_| to the InfoBubbleView in the xib.
  23 @interface BaseBubbleController : NSWindowController<NSWindowDelegate> {
  24  @private
  25   NSWindow* parentWindow_;  // weak
  26   NSPoint anchor_;
  27   // Offset of the anchor point relative to the parent window's upper-left-hand
  28   // corner. Used to ensure that if the parent window is resized with the bubble
  29   // remaining visible, the bubble continues to be anchored correctly.
  30   NSPoint anchorOffset_;
  31
  32   IBOutlet InfoBubbleView* bubble_;  // to set arrow position
  33   // Bridge for tab change notifications.
  34   scoped_ptr<TabStripModelObserverBridge> tabStripObserverBridge_;
  35
  36   // Non-nil only on 10.7+. Both weak, owned by AppKit.
  37   // A local event tap that will dismiss the bubble when a click is delivered
  38   // outside the window. This is needed because the window shares first
  39   // responder with its parent.
  40   id eventTap_;
  41   // A notification observer that gets triggered when any window resigns key.
  42   id resignationObserver_;
  43   // The controlled window should be the key window when it's opened. True by
  44   // default.
  45   BOOL shouldOpenAsKeyWindow_;
  46   // The bubble window should close if it (or its parent) resigns key status.
  47   BOOL shouldCloseOnResignKey_;
  48 }
  49
  50 @property(nonatomic, readonly) NSWindow* parentWindow;
  51 // The point in base screen coordinates at which the bubble should open and the
  52 // arrow tip points.
  53 @property(nonatomic, assign) NSPoint anchorPoint;
  54 @property(nonatomic, readonly) InfoBubbleView* bubble;
  55 @property(nonatomic, assign) BOOL shouldOpenAsKeyWindow;
  56 // Controls if the bubble auto-closes if the user clicks outside the bubble.
  57 @property(nonatomic, assign) BOOL shouldCloseOnResignKey;
  58
  59 // Creates a bubble. |nibPath| is just the basename, e.g. @"FirstRunBubble".
  60 // |anchoredAt| is in screen space. You need to call -showWindow: to make the
  61 // bubble visible. It will autorelease itself when the user dismisses the
  62 // bubble.
  63 // This is the designated initializer.
  64 - (id)initWithWindowNibPath:(NSString*)nibPath
  65                parentWindow:(NSWindow*)parentWindow
  66                  anchoredAt:(NSPoint)anchoredAt;
  67
  68
  69 // Creates a bubble. |nibPath| is just the basename, e.g. @"FirstRunBubble".
  70 // |view| must be in a window. The bubble will point at |offset| relative to
  71 // |view|'s lower left corner. You need to call -showWindow: to make the
  72 // bubble visible. It will autorelease itself when the user dismisses the
  73 // bubble.
  74 - (id)initWithWindowNibPath:(NSString*)nibPath
  75              relativeToView:(NSView*)view
  76                      offset:(NSPoint)offset;
  77
  78
  79 // For subclasses that do not load from a XIB, this will simply set the instance
  80 // variables appropriately. This will also replace the |-[self window]|'s
  81 // contentView with an instance of InfoBubbleView.
  82 - (id)initWithWindow:(NSWindow*)theWindow
  83         parentWindow:(NSWindow*)parentWindow
  84           anchoredAt:(NSPoint)anchoredAt;
  85
  86 // Creates an autoreleased horizontal separator view with a given frame. The
  87 // height of the frame is ignored.
  88 - (NSBox*)horizontalSeparatorWithFrame:(NSRect)frame;
  89
  90 // Creates an autoreleased vertical separator view with a given frame. The
  91 // width of frame is ignored.
  92 - (NSBox*)verticalSeparatorWithFrame:(NSRect)frame;
  93
  94
  95 @end
  96
  97 // Methods for use by subclasses.
  98 @interface BaseBubbleController (Protected)
  99 // Registers event taps *after* the window is shown so that the bubble is
 100 // dismissed when it resigns key. This only needs to be called if
 101 // |-showWindow:| is overriden and does not call super. Noop on OSes <10.7.
 102 - (void)registerKeyStateEventTap;
 103 @end