chrome/browser/cocoa/page_info_bubble_controller.mm - platform/external/chromium - Git at Google

 // Copyright (c) 2010 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.

 #import "chrome/browser/cocoa/page_info_bubble_controller.h"

 #include "app/l10n_util.h"
 #include "app/l10n_util_mac.h"
 #include "base/message_loop.h"
 #include "base/sys_string_conversions.h"
 #include "base/task.h"
 #include "chrome/browser/browser_list.h"
 #include "chrome/browser/cert_store.h"
 #include "chrome/browser/certificate_viewer.h"
 #import "chrome/browser/cocoa/browser_window_controller.h"
 #import "chrome/browser/cocoa/hyperlink_button_cell.h"
 #import "chrome/browser/cocoa/info_bubble_view.h"
 #import "chrome/browser/cocoa/info_bubble_window.h"
 #import "chrome/browser/cocoa/location_bar/location_bar_view_mac.h"
 #include "chrome/browser/google/google_util.h"
 #include "chrome/browser/profile.h"
 #include "chrome/common/url_constants.h"
 #include "grit/generated_resources.h"
 #include "grit/locale_settings.h"
 #include "net/base/cert_status_flags.h"
 #include "net/base/x509_certificate.h"
 #import "third_party/GTM/AppKit/GTMUILocalizerAndLayoutTweaker.h"

 @interface PageInfoBubbleController (Private)
 - (PageInfoModel*)model;
 - (NSButton*)certificateButtonWithFrame:(NSRect)frame;
 - (void)configureTextFieldAsLabel:(NSTextField*)textField;
 - (CGFloat)addHeadlineViewForInfo:(const PageInfoModel::SectionInfo&)info
                        toSubviews:(NSMutableArray*)subviews
                           atPoint:(NSPoint)point;
 - (CGFloat)addDescriptionViewForInfo:(const PageInfoModel::SectionInfo&)info
                           toSubviews:(NSMutableArray*)subviews
                              atPoint:(NSPoint)point;
 - (CGFloat)addCertificateButtonToSubviews:(NSMutableArray*)subviews
                                  atOffset:(CGFloat)offset;
 - (void)addImageViewForInfo:(const PageInfoModel::SectionInfo&)info
                  toSubviews:(NSMutableArray*)subviews
                    atOffset:(CGFloat)offset;
 - (CGFloat)addHelpButtonToSubviews:(NSMutableArray*)subviews
                           atOffset:(CGFloat)offset;
 - (CGFloat)addSeparatorToSubviews:(NSMutableArray*)subviews
                          atOffset:(CGFloat)offset;
 - (NSPoint)anchorPointForWindowWithHeight:(CGFloat)bubbleHeight
                              parentWindow:(NSWindow*)parent;
 @end

 // This simple NSView subclass is used as the single subview of the page info
 // bubble's window's contentView. Drawing is flipped so that layout of the
 // sections is easier. Apple recommends flipping the coordinate origin when
 // doing a lot of text layout because it's more natural.
 @interface PageInfoContentView : NSView {
 }
 @end
 @implementation PageInfoContentView
 - (BOOL)isFlipped {
   return YES;
 }
 @end

 namespace {

 // The width of the window, in view coordinates. The height will be determined
 // by the content.
 const NSInteger kWindowWidth = 380;

 // Spacing in between sections.
 const NSInteger kVerticalSpacing = 10;

 // Padding along on the X-axis between the window frame and content.
 const NSInteger kFramePadding = 20;

 // Spacing between the optional headline and description text views.
 const NSInteger kHeadlineSpacing = 2;

 // Spacing between the image and the text.
 const NSInteger kImageSpacing = 10;

 // Square size of the image.
 const CGFloat kImageSize = 30;

 // The X position of the text fields. Variants for with and without an image.
 const CGFloat kTextXPositionNoImage = kFramePadding;
 const CGFloat kTextXPosition = kTextXPositionNoImage + kImageSize +
     kImageSpacing;

 // Width of the text fields.
 const CGFloat kTextWidth = kWindowWidth - (kImageSize + kImageSpacing +
     kFramePadding * 2);

 // Bridge that listens for change notifications from the model.
 class PageInfoModelBubbleBridge : public PageInfoModel::PageInfoModelObserver {
  public:
   PageInfoModelBubbleBridge()
       : controller_(nil),
         ALLOW_THIS_IN_INITIALIZER_LIST(task_factory_(this)) {
   }

   // PageInfoModelObserver implementation.
   virtual void ModelChanged() {
     // Check to see if a layout has already been scheduled.
     if (!task_factory_.empty())
       return;

     // Delay performing layout by a second so that all the animations from
     // InfoBubbleWindow and origin updates from BaseBubbleController finish, so
     // that we don't all race trying to change the frame's origin.
     //
     // Using ScopedRunnableMethodFactory is superior here to |-performSelector:|
     // because it will not retain its target; if the child outlives its parent,
     // zombies get left behind (http://crbug.com/59619). This will also cancel
     // the scheduled Tasks if the controller (and thus this bridge) get
     // destroyed before the message can be delivered.
     MessageLoop::current()->PostDelayedTask(FROM_HERE,
         task_factory_.NewRunnableMethod(
             &PageInfoModelBubbleBridge::PerformLayout),
         1000 /* milliseconds */);
   }

   // Sets the controller.
   void set_controller(PageInfoBubbleController* controller) {
     controller_ = controller;
   }

  private:
   void PerformLayout() {
     [controller_ performLayout];
   }

   PageInfoBubbleController* controller_;  // weak

   // Factory that vends RunnableMethod tasks for scheduling layout.
   ScopedRunnableMethodFactory<PageInfoModelBubbleBridge> task_factory_;
 };

 }  // namespace

 namespace browser {

 void ShowPageInfoBubble(gfx::NativeWindow parent,
                         Profile* profile,
                         const GURL& url,
                         const NavigationEntry::SSLStatus& ssl,
                         bool show_history) {
   PageInfoModelBubbleBridge* bridge = new PageInfoModelBubbleBridge();
   PageInfoModel* model =
       new PageInfoModel(profile, url, ssl, show_history, bridge);
   PageInfoBubbleController* controller =
       [[PageInfoBubbleController alloc] initWithPageInfoModel:model
                                                 modelObserver:bridge
                                                  parentWindow:parent];
   bridge->set_controller(controller);
   [controller setCertID:ssl.cert_id()];
   [controller showWindow:nil];
 }

 }  // namespace browser

 @implementation PageInfoBubbleController

 @synthesize certID = certID_;

 - (id)initWithPageInfoModel:(PageInfoModel*)model
               modelObserver:(PageInfoModel::PageInfoModelObserver*)bridge
                parentWindow:(NSWindow*)parentWindow {
   // Use an arbitrary height because it will be changed by the bridge.
   NSRect contentRect = NSMakeRect(0, 0, kWindowWidth, 0);
   // Create an empty window into which content is placed.
   scoped_nsobject<InfoBubbleWindow> window(
       [[InfoBubbleWindow alloc] initWithContentRect:contentRect
                                           styleMask:NSBorderlessWindowMask
                                             backing:NSBackingStoreBuffered
                                               defer:NO]);

   if ((self = [super initWithWindow:window.get()
                        parentWindow:parentWindow
                          anchoredAt:NSZeroPoint])) {
     model_.reset(model);
     bridge_.reset(bridge);
     [[self bubble] setArrowLocation:info_bubble::kTopLeft];
     [self performLayout];
   }
   return self;
 }

 - (PageInfoModel*)model {
   return model_.get();
 }

 - (IBAction)showCertWindow:(id)sender {
   DCHECK(certID_ != 0);
   ShowCertificateViewerByID([self parentWindow], certID_);
 }

 - (IBAction)showHelpPage:(id)sender {
   GURL url = google_util::AppendGoogleLocaleParam(
       GURL(chrome::kPageInfoHelpCenterURL));
   Browser* browser = BrowserList::GetLastActive();
   browser->OpenURL(url, GURL(), NEW_FOREGROUND_TAB, PageTransition::LINK);
 }

 // This will create the subviews for the page info window. The general layout
 // is 2 or 3 boxed and titled sections, each of which has a status image to
 // provide visual feedback and a description that explains it. The description
 // text is usually only 1 or 2 lines, but can be much longer. At the bottom of
 // the window is a button to view the SSL certificate, which is disabled if
 // not using HTTPS.
 - (void)performLayout {
   // |offset| is the Y position that should be drawn at next.
   CGFloat offset = kFramePadding;

   // Keep the new subviews in an array that gets replaced at the end.
   NSMutableArray* subviews = [NSMutableArray array];

   // The subviews will be attached to the PageInfoContentView, which has a
   // flipped origin. This allows the code to build top-to-bottom.
   const int sectionCount = model_->GetSectionCount();
   for (int i = 0; i < sectionCount; ++i) {
     PageInfoModel::SectionInfo info = model_->GetSectionInfo(i);

     // Only certain sections have images. This affects the X position.
     BOOL hasImage = model_->GetIconImage(info.icon_id) != nil;
     CGFloat xPosition = (hasImage ? kTextXPosition : kTextXPositionNoImage);

     // Insert the image subview for sections that are appropriate.
     CGFloat imageBaseline = offset + kImageSize;
     if (hasImage) {
       [self addImageViewForInfo:info toSubviews:subviews atOffset:offset];
     }

     // Add the title.
     if (!info.headline.empty()) {
       offset += [self addHeadlineViewForInfo:info
                                   toSubviews:subviews
                                      atPoint:NSMakePoint(xPosition, offset)];
       offset += kHeadlineSpacing;
     }

     // Create the description of the state.
     offset += [self addDescriptionViewForInfo:info
                                    toSubviews:subviews
                                       atPoint:NSMakePoint(xPosition, offset)];

     if (info.type == PageInfoModel::SECTION_INFO_IDENTITY && certID_) {
       offset += kVerticalSpacing;
       offset += [self addCertificateButtonToSubviews:subviews atOffset:offset];
     }

     // If at this point the description and optional headline and button are
     // not as tall as the image, adjust the offset by the difference.
     CGFloat imageBaselineDelta = imageBaseline - offset;
     if (imageBaselineDelta > 0)
       offset += imageBaselineDelta;

     // Add the separators.
     offset += kVerticalSpacing;
     offset += [self addSeparatorToSubviews:subviews atOffset:offset];
   }

   // The last item at the bottom of the window is the help center link.
   offset += [self addHelpButtonToSubviews:subviews atOffset:offset];
   offset += kVerticalSpacing;

   // Create the dummy view that uses flipped coordinates.
   NSRect contentFrame = NSMakeRect(0, 0, kWindowWidth, offset);
   scoped_nsobject<PageInfoContentView> contentView(
       [[PageInfoContentView alloc] initWithFrame:contentFrame]);
   [contentView setSubviews:subviews];

   // Replace the window's content.
   [[[self window] contentView] setSubviews:
       [NSArray arrayWithObject:contentView]];

   NSRect windowFrame = NSMakeRect(0, 0, kWindowWidth, offset);
   windowFrame.size = [[[self window] contentView] convertSize:windowFrame.size
                                                        toView:nil];
   // Adjust the origin by the difference in height.
   windowFrame.origin = [[self window] frame].origin;
   windowFrame.origin.y -= NSHeight(windowFrame) -
       NSHeight([[self window] frame]);

   // Resize the window. Only animate if the window is visible, otherwise it
   // could be "growing" while it's opening, looking awkward.
   [[self window] setFrame:windowFrame
                   display:YES
                   animate:[[self window] isVisible]];

   NSPoint anchorPoint =
       [self anchorPointForWindowWithHeight:NSHeight(windowFrame)
                               parentWindow:[self parentWindow]];
   [self setAnchorPoint:anchorPoint];
 }

 // Creates the button with a given |frame| that, when clicked, will show the
 // SSL certificate information.
 - (NSButton*)certificateButtonWithFrame:(NSRect)frame {
   NSButton* certButton = [[[NSButton alloc] initWithFrame:frame] autorelease];
   [certButton setTitle:
       l10n_util::GetNSStringWithFixup(IDS_PAGEINFO_CERT_INFO_BUTTON)];
   [certButton setButtonType:NSMomentaryPushInButton];
   [certButton setBezelStyle:NSRoundRectBezelStyle];
   [certButton setTarget:self];
   [certButton setAction:@selector(showCertWindow:)];
   [[certButton cell] setControlSize:NSSmallControlSize];
   NSFont* font = [NSFont systemFontOfSize:
       [NSFont systemFontSizeForControlSize:NSSmallControlSize]];
   [[certButton cell] setFont:font];
   return certButton;
 }

 // Sets proprties on the given |field| to act as the title or description labels
 // in the bubble.
 - (void)configureTextFieldAsLabel:(NSTextField*)textField {
   [textField setEditable:NO];
   [textField setDrawsBackground:NO];
   [textField setBezeled:NO];
 }

 // Adds the title text field at the given x,y position, and returns the y
 // position for the next element.
 - (CGFloat)addHeadlineViewForInfo:(const PageInfoModel::SectionInfo&)info
                        toSubviews:(NSMutableArray*)subviews
                           atPoint:(NSPoint)point {
   NSRect frame = NSMakeRect(point.x, point.y, kTextWidth, kImageSpacing);
   scoped_nsobject<NSTextField> textField(
       [[NSTextField alloc] initWithFrame:frame]);
   [self configureTextFieldAsLabel:textField.get()];
   [textField setStringValue:base::SysUTF16ToNSString(info.headline)];
   NSFont* font = [NSFont boldSystemFontOfSize:[NSFont smallSystemFontSize]];
   [textField setFont:font];
   frame.size.height +=
       [GTMUILocalizerAndLayoutTweaker sizeToFitFixedWidthTextField:
           textField];
   [textField setFrame:frame];
   [subviews addObject:textField.get()];
   return NSHeight(frame);
 }

 // Adds the description text field at the given x,y position, and returns the y
 // position for the next element.
 - (CGFloat)addDescriptionViewForInfo:(const PageInfoModel::SectionInfo&)info
                           toSubviews:(NSMutableArray*)subviews
                              atPoint:(NSPoint)point {
   NSRect frame = NSMakeRect(point.x, point.y, kTextWidth, kImageSize);
   scoped_nsobject<NSTextField> textField(
       [[NSTextField alloc] initWithFrame:frame]);
   [self configureTextFieldAsLabel:textField.get()];
   [textField setStringValue:base::SysUTF16ToNSString(info.description)];
   [textField setFont:[NSFont labelFontOfSize:[NSFont smallSystemFontSize]]];

   // If the text is oversized, resize the text field.
   frame.size.height +=
       [GTMUILocalizerAndLayoutTweaker sizeToFitFixedWidthTextField:
           textField];
   [subviews addObject:textField.get()];
   return NSHeight(frame);
 }

 // Adds the certificate button at a pre-determined x position and the given y.
 // Returns the y position for the next element.
 - (CGFloat)addCertificateButtonToSubviews:(NSMutableArray*)subviews
                                  atOffset:(CGFloat)offset {
   // The certificate button should only be added if there is SSL information.
   DCHECK(certID_);

   // Create the certificate button. The frame will be fixed up by GTM, so
   // use arbitrary values.
   NSRect frame = NSMakeRect(kTextXPosition, offset, 100, 14);
   NSButton* certButton = [self certificateButtonWithFrame:frame];
   [subviews addObject:certButton];
   [GTMUILocalizerAndLayoutTweaker sizeToFitView:certButton];

   // By default, assume that we don't have certificate information to show.
   scoped_refptr<net::X509Certificate> cert;
   CertStore::GetSharedInstance()->RetrieveCert(certID_, &cert);

   // Don't bother showing certificates if there isn't one. Gears runs
   // with no OS root certificate.
   if (!cert.get() || !cert->os_cert_handle()) {
     // This should only ever happen in unit tests.
     [certButton setEnabled:NO];
   }

   return NSHeight([certButton frame]);
 }

 // Adds the state image at a pre-determined x position and the given y. This
 // does not affect the next Y position because the image is placed next to
 // a text field that is larger and accounts for the image's size.
 - (void)addImageViewForInfo:(const PageInfoModel::SectionInfo&)info
                  toSubviews:(NSMutableArray*)subviews
                    atOffset:(CGFloat)offset {
   NSRect frame = NSMakeRect(kFramePadding, offset, kImageSize,
       kImageSize);
   scoped_nsobject<NSImageView> imageView(
       [[NSImageView alloc] initWithFrame:frame]);
   [imageView setImageFrameStyle:NSImageFrameNone];
   [imageView setImage:model_->GetIconImage(info.icon_id)];
   [subviews addObject:imageView.get()];
 }

 // Adds the help center button that explains the icons. Returns the y position
 // delta for the next offset.
 - (CGFloat)addHelpButtonToSubviews:(NSMutableArray*)subviews
                           atOffset:(CGFloat)offset {
   NSRect frame = NSMakeRect(kFramePadding, offset, 100, 10);
   scoped_nsobject<NSButton> button([[NSButton alloc] initWithFrame:frame]);
   NSString* string =
       l10n_util::GetNSStringWithFixup(IDS_PAGE_INFO_HELP_CENTER_LINK);
   scoped_nsobject<HyperlinkButtonCell> cell(
       [[HyperlinkButtonCell alloc] initTextCell:string]);
   [cell setControlSize:NSSmallControlSize];
   [button setCell:cell.get()];
   [button setButtonType:NSMomentaryPushInButton];
   [button setBezelStyle:NSRegularSquareBezelStyle];
   [button setTarget:self];
   [button setAction:@selector(showHelpPage:)];
   [subviews addObject:button.get()];

   // Call size-to-fit to fixup for the localized string.
   [GTMUILocalizerAndLayoutTweaker sizeToFitView:button.get()];
   return NSHeight([button frame]);
 }

 // Adds a 1px separator between sections. Returns the y position delta for the
 // next offset.
 - (CGFloat)addSeparatorToSubviews:(NSMutableArray*)subviews
                          atOffset:(CGFloat)offset {
   scoped_nsobject<NSBox> spacer(
       [[NSBox alloc] initWithFrame:NSMakeRect(0, offset, kWindowWidth, 1)]);
   [spacer setBoxType:NSBoxSeparator];
   [spacer setBorderType:NSLineBorder];
   [spacer setAlphaValue:0.2];
   [subviews addObject:spacer.get()];
   return kVerticalSpacing;
 }

 // Takes in the bubble's height and the parent window, which should be a
 // BrowserWindow, and gets the proper anchor point for the bubble. The returned
 // point is in screen coordinates.
 - (NSPoint)anchorPointForWindowWithHeight:(CGFloat)bubbleHeight
                              parentWindow:(NSWindow*)parent {
   BrowserWindowController* controller = [parent windowController];
   NSPoint origin = NSZeroPoint;
   if ([controller isKindOfClass:[BrowserWindowController class]]) {
     LocationBarViewMac* locationBar = [controller locationBarBridge];
     if (locationBar) {
       NSPoint bubblePoint = locationBar->GetPageInfoBubblePoint();
       origin = [parent convertBaseToScreen:bubblePoint];
     }
   }
   return origin;
 }

 @end
	// Copyright (c) 2010 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.

	#import "chrome/browser/cocoa/page_info_bubble_controller.h"

	#include "app/l10n_util.h"
	#include "app/l10n_util_mac.h"
	#include "base/message_loop.h"
	#include "base/sys_string_conversions.h"
	#include "base/task.h"
	#include "chrome/browser/browser_list.h"
	#include "chrome/browser/cert_store.h"
	#include "chrome/browser/certificate_viewer.h"
	#import "chrome/browser/cocoa/browser_window_controller.h"
	#import "chrome/browser/cocoa/hyperlink_button_cell.h"
	#import "chrome/browser/cocoa/info_bubble_view.h"
	#import "chrome/browser/cocoa/info_bubble_window.h"
	#import "chrome/browser/cocoa/location_bar/location_bar_view_mac.h"
	#include "chrome/browser/google/google_util.h"
	#include "chrome/browser/profile.h"
	#include "chrome/common/url_constants.h"
	#include "grit/generated_resources.h"
	#include "grit/locale_settings.h"
	#include "net/base/cert_status_flags.h"
	#include "net/base/x509_certificate.h"
	#import "third_party/GTM/AppKit/GTMUILocalizerAndLayoutTweaker.h"

	@interface PageInfoBubbleController (Private)
	- (PageInfoModel*)model;
	- (NSButton*)certificateButtonWithFrame:(NSRect)frame;
	- (void)configureTextFieldAsLabel:(NSTextField*)textField;
	- (CGFloat)addHeadlineViewForInfo:(const PageInfoModel::SectionInfo&)info
	toSubviews:(NSMutableArray*)subviews
	atPoint:(NSPoint)point;
	- (CGFloat)addDescriptionViewForInfo:(const PageInfoModel::SectionInfo&)info
	toSubviews:(NSMutableArray*)subviews
	atPoint:(NSPoint)point;
	- (CGFloat)addCertificateButtonToSubviews:(NSMutableArray*)subviews
	atOffset:(CGFloat)offset;
	- (void)addImageViewForInfo:(const PageInfoModel::SectionInfo&)info
	toSubviews:(NSMutableArray*)subviews
	atOffset:(CGFloat)offset;
	- (CGFloat)addHelpButtonToSubviews:(NSMutableArray*)subviews
	atOffset:(CGFloat)offset;
	- (CGFloat)addSeparatorToSubviews:(NSMutableArray*)subviews
	atOffset:(CGFloat)offset;
	- (NSPoint)anchorPointForWindowWithHeight:(CGFloat)bubbleHeight
	parentWindow:(NSWindow*)parent;
	@end

	// This simple NSView subclass is used as the single subview of the page info
	// bubble's window's contentView. Drawing is flipped so that layout of the
	// sections is easier. Apple recommends flipping the coordinate origin when
	// doing a lot of text layout because it's more natural.
	@interface PageInfoContentView : NSView {
	}
	@end
	@implementation PageInfoContentView
	- (BOOL)isFlipped {
	return YES;
	}
	@end

	namespace {

	// The width of the window, in view coordinates. The height will be determined
	// by the content.
	const NSInteger kWindowWidth = 380;

	// Spacing in between sections.
	const NSInteger kVerticalSpacing = 10;

	// Padding along on the X-axis between the window frame and content.
	const NSInteger kFramePadding = 20;

	// Spacing between the optional headline and description text views.
	const NSInteger kHeadlineSpacing = 2;

	// Spacing between the image and the text.
	const NSInteger kImageSpacing = 10;

	// Square size of the image.
	const CGFloat kImageSize = 30;

	// The X position of the text fields. Variants for with and without an image.
	const CGFloat kTextXPositionNoImage = kFramePadding;
	const CGFloat kTextXPosition = kTextXPositionNoImage + kImageSize +
	kImageSpacing;

	// Width of the text fields.
	const CGFloat kTextWidth = kWindowWidth - (kImageSize + kImageSpacing +
	kFramePadding * 2);

	// Bridge that listens for change notifications from the model.
	class PageInfoModelBubbleBridge : public PageInfoModel::PageInfoModelObserver {
	public:
	PageInfoModelBubbleBridge()
	: controller_(nil),
	ALLOW_THIS_IN_INITIALIZER_LIST(task_factory_(this)) {
	}

	// PageInfoModelObserver implementation.
	virtual void ModelChanged() {
	// Check to see if a layout has already been scheduled.
	if (!task_factory_.empty())
	return;

	// Delay performing layout by a second so that all the animations from
	// InfoBubbleWindow and origin updates from BaseBubbleController finish, so
	// that we don't all race trying to change the frame's origin.
	//
	// Using ScopedRunnableMethodFactory is superior here to \|-performSelector:\|
	// because it will not retain its target; if the child outlives its parent,
	// zombies get left behind (http://crbug.com/59619). This will also cancel
	// the scheduled Tasks if the controller (and thus this bridge) get
	// destroyed before the message can be delivered.
	MessageLoop::current()->PostDelayedTask(FROM_HERE,
	task_factory_.NewRunnableMethod(
	&PageInfoModelBubbleBridge::PerformLayout),
	1000 /* milliseconds */);
	}

	// Sets the controller.
	void set_controller(PageInfoBubbleController* controller) {
	controller_ = controller;
	}

	private:
	void PerformLayout() {
	[controller_ performLayout];
	}

	PageInfoBubbleController* controller_; // weak

	// Factory that vends RunnableMethod tasks for scheduling layout.
	ScopedRunnableMethodFactory<PageInfoModelBubbleBridge> task_factory_;
	};

	} // namespace

	namespace browser {

	void ShowPageInfoBubble(gfx::NativeWindow parent,
	Profile* profile,
	const GURL& url,
	const NavigationEntry::SSLStatus& ssl,
	bool show_history) {
	PageInfoModelBubbleBridge* bridge = new PageInfoModelBubbleBridge();
	PageInfoModel* model =
	new PageInfoModel(profile, url, ssl, show_history, bridge);
	PageInfoBubbleController* controller =
	[[PageInfoBubbleController alloc] initWithPageInfoModel:model
	modelObserver:bridge
	parentWindow:parent];
	bridge->set_controller(controller);
	[controller setCertID:ssl.cert_id()];
	[controller showWindow:nil];
	}

	} // namespace browser

	@implementation PageInfoBubbleController

	@synthesize certID = certID_;

	- (id)initWithPageInfoModel:(PageInfoModel*)model
	modelObserver:(PageInfoModel::PageInfoModelObserver*)bridge
	parentWindow:(NSWindow*)parentWindow {
	// Use an arbitrary height because it will be changed by the bridge.
	NSRect contentRect = NSMakeRect(0, 0, kWindowWidth, 0);
	// Create an empty window into which content is placed.
	scoped_nsobject<InfoBubbleWindow> window(
	[[InfoBubbleWindow alloc] initWithContentRect:contentRect
	styleMask:NSBorderlessWindowMask
	backing:NSBackingStoreBuffered
	defer:NO]);

	if ((self = [super initWithWindow:window.get()
	parentWindow:parentWindow
	anchoredAt:NSZeroPoint])) {
	model_.reset(model);
	bridge_.reset(bridge);
	[[self bubble] setArrowLocation:info_bubble::kTopLeft];
	[self performLayout];
	}
	return self;
	}

	- (PageInfoModel*)model {
	return model_.get();
	}

	- (IBAction)showCertWindow:(id)sender {
	DCHECK(certID_ != 0);
	ShowCertificateViewerByID([self parentWindow], certID_);
	}

	- (IBAction)showHelpPage:(id)sender {
	GURL url = google_util::AppendGoogleLocaleParam(
	GURL(chrome::kPageInfoHelpCenterURL));
	Browser* browser = BrowserList::GetLastActive();
	browser->OpenURL(url, GURL(), NEW_FOREGROUND_TAB, PageTransition::LINK);
	}

	// This will create the subviews for the page info window. The general layout
	// is 2 or 3 boxed and titled sections, each of which has a status image to
	// provide visual feedback and a description that explains it. The description
	// text is usually only 1 or 2 lines, but can be much longer. At the bottom of
	// the window is a button to view the SSL certificate, which is disabled if
	// not using HTTPS.
	- (void)performLayout {
	// \|offset\| is the Y position that should be drawn at next.
	CGFloat offset = kFramePadding;

	// Keep the new subviews in an array that gets replaced at the end.
	NSMutableArray* subviews = [NSMutableArray array];

	// The subviews will be attached to the PageInfoContentView, which has a
	// flipped origin. This allows the code to build top-to-bottom.
	const int sectionCount = model_->GetSectionCount();
	for (int i = 0; i < sectionCount; ++i) {
	PageInfoModel::SectionInfo info = model_->GetSectionInfo(i);

	// Only certain sections have images. This affects the X position.
	BOOL hasImage = model_->GetIconImage(info.icon_id) != nil;
	CGFloat xPosition = (hasImage ? kTextXPosition : kTextXPositionNoImage);

	// Insert the image subview for sections that are appropriate.
	CGFloat imageBaseline = offset + kImageSize;
	if (hasImage) {
	[self addImageViewForInfo:info toSubviews:subviews atOffset:offset];
	}

	// Add the title.
	if (!info.headline.empty()) {
	offset += [self addHeadlineViewForInfo:info
	toSubviews:subviews
	atPoint:NSMakePoint(xPosition, offset)];
	offset += kHeadlineSpacing;
	}

	// Create the description of the state.
	offset += [self addDescriptionViewForInfo:info
	toSubviews:subviews
	atPoint:NSMakePoint(xPosition, offset)];

	if (info.type == PageInfoModel::SECTION_INFO_IDENTITY && certID_) {
	offset += kVerticalSpacing;
	offset += [self addCertificateButtonToSubviews:subviews atOffset:offset];
	}

	// If at this point the description and optional headline and button are
	// not as tall as the image, adjust the offset by the difference.
	CGFloat imageBaselineDelta = imageBaseline - offset;
	if (imageBaselineDelta > 0)
	offset += imageBaselineDelta;

	// Add the separators.
	offset += kVerticalSpacing;
	offset += [self addSeparatorToSubviews:subviews atOffset:offset];
	}

	// The last item at the bottom of the window is the help center link.
	offset += [self addHelpButtonToSubviews:subviews atOffset:offset];
	offset += kVerticalSpacing;

	// Create the dummy view that uses flipped coordinates.
	NSRect contentFrame = NSMakeRect(0, 0, kWindowWidth, offset);
	scoped_nsobject<PageInfoContentView> contentView(
	[[PageInfoContentView alloc] initWithFrame:contentFrame]);
	[contentView setSubviews:subviews];

	// Replace the window's content.
	[[[self window] contentView] setSubviews:
	[NSArray arrayWithObject:contentView]];

	NSRect windowFrame = NSMakeRect(0, 0, kWindowWidth, offset);
	windowFrame.size = [[[self window] contentView] convertSize:windowFrame.size
	toView:nil];
	// Adjust the origin by the difference in height.
	windowFrame.origin = [[self window] frame].origin;
	windowFrame.origin.y -= NSHeight(windowFrame) -
	NSHeight([[self window] frame]);

	// Resize the window. Only animate if the window is visible, otherwise it
	// could be "growing" while it's opening, looking awkward.
	[[self window] setFrame:windowFrame
	display:YES
	animate:[[self window] isVisible]];

	NSPoint anchorPoint =
	[self anchorPointForWindowWithHeight:NSHeight(windowFrame)
	parentWindow:[self parentWindow]];
	[self setAnchorPoint:anchorPoint];
	}

	// Creates the button with a given \|frame\| that, when clicked, will show the
	// SSL certificate information.
	- (NSButton*)certificateButtonWithFrame:(NSRect)frame {
	NSButton* certButton = [[[NSButton alloc] initWithFrame:frame] autorelease];
	[certButton setTitle:
	l10n_util::GetNSStringWithFixup(IDS_PAGEINFO_CERT_INFO_BUTTON)];
	[certButton setButtonType:NSMomentaryPushInButton];
	[certButton setBezelStyle:NSRoundRectBezelStyle];
	[certButton setTarget:self];
	[certButton setAction:@selector(showCertWindow:)];
	[[certButton cell] setControlSize:NSSmallControlSize];
	NSFont* font = [NSFont systemFontOfSize:
	[NSFont systemFontSizeForControlSize:NSSmallControlSize]];
	[[certButton cell] setFont:font];
	return certButton;
	}

	// Sets proprties on the given \|field\| to act as the title or description labels
	// in the bubble.
	- (void)configureTextFieldAsLabel:(NSTextField*)textField {
	[textField setEditable:NO];
	[textField setDrawsBackground:NO];
	[textField setBezeled:NO];
	}

	// Adds the title text field at the given x,y position, and returns the y
	// position for the next element.
	- (CGFloat)addHeadlineViewForInfo:(const PageInfoModel::SectionInfo&)info
	toSubviews:(NSMutableArray*)subviews
	atPoint:(NSPoint)point {
	NSRect frame = NSMakeRect(point.x, point.y, kTextWidth, kImageSpacing);
	scoped_nsobject<NSTextField> textField(
	[[NSTextField alloc] initWithFrame:frame]);
	[self configureTextFieldAsLabel:textField.get()];
	[textField setStringValue:base::SysUTF16ToNSString(info.headline)];
	NSFont* font = [NSFont boldSystemFontOfSize:[NSFont smallSystemFontSize]];
	[textField setFont:font];
	frame.size.height +=
	[GTMUILocalizerAndLayoutTweaker sizeToFitFixedWidthTextField:
	textField];
	[textField setFrame:frame];
	[subviews addObject:textField.get()];
	return NSHeight(frame);
	}

	// Adds the description text field at the given x,y position, and returns the y
	// position for the next element.
	- (CGFloat)addDescriptionViewForInfo:(const PageInfoModel::SectionInfo&)info
	toSubviews:(NSMutableArray*)subviews
	atPoint:(NSPoint)point {
	NSRect frame = NSMakeRect(point.x, point.y, kTextWidth, kImageSize);
	scoped_nsobject<NSTextField> textField(
	[[NSTextField alloc] initWithFrame:frame]);
	[self configureTextFieldAsLabel:textField.get()];
	[textField setStringValue:base::SysUTF16ToNSString(info.description)];
	[textField setFont:[NSFont labelFontOfSize:[NSFont smallSystemFontSize]]];

	// If the text is oversized, resize the text field.
	frame.size.height +=
	[GTMUILocalizerAndLayoutTweaker sizeToFitFixedWidthTextField:
	textField];
	[subviews addObject:textField.get()];
	return NSHeight(frame);
	}

	// Adds the certificate button at a pre-determined x position and the given y.
	// Returns the y position for the next element.
	- (CGFloat)addCertificateButtonToSubviews:(NSMutableArray*)subviews
	atOffset:(CGFloat)offset {
	// The certificate button should only be added if there is SSL information.
	DCHECK(certID_);

	// Create the certificate button. The frame will be fixed up by GTM, so
	// use arbitrary values.
	NSRect frame = NSMakeRect(kTextXPosition, offset, 100, 14);
	NSButton* certButton = [self certificateButtonWithFrame:frame];
	[subviews addObject:certButton];
	[GTMUILocalizerAndLayoutTweaker sizeToFitView:certButton];

	// By default, assume that we don't have certificate information to show.
	scoped_refptr<net::X509Certificate> cert;
	CertStore::GetSharedInstance()->RetrieveCert(certID_, &cert);

	// Don't bother showing certificates if there isn't one. Gears runs
	// with no OS root certificate.
	if (!cert.get() \|\| !cert->os_cert_handle()) {
	// This should only ever happen in unit tests.
	[certButton setEnabled:NO];
	}

	return NSHeight([certButton frame]);
	}

	// Adds the state image at a pre-determined x position and the given y. This
	// does not affect the next Y position because the image is placed next to
	// a text field that is larger and accounts for the image's size.
	- (void)addImageViewForInfo:(const PageInfoModel::SectionInfo&)info
	toSubviews:(NSMutableArray*)subviews
	atOffset:(CGFloat)offset {
	NSRect frame = NSMakeRect(kFramePadding, offset, kImageSize,
	kImageSize);
	scoped_nsobject<NSImageView> imageView(
	[[NSImageView alloc] initWithFrame:frame]);
	[imageView setImageFrameStyle:NSImageFrameNone];
	[imageView setImage:model_->GetIconImage(info.icon_id)];
	[subviews addObject:imageView.get()];
	}

	// Adds the help center button that explains the icons. Returns the y position
	// delta for the next offset.
	- (CGFloat)addHelpButtonToSubviews:(NSMutableArray*)subviews
	atOffset:(CGFloat)offset {
	NSRect frame = NSMakeRect(kFramePadding, offset, 100, 10);
	scoped_nsobject<NSButton> button([[NSButton alloc] initWithFrame:frame]);
	NSString* string =
	l10n_util::GetNSStringWithFixup(IDS_PAGE_INFO_HELP_CENTER_LINK);
	scoped_nsobject<HyperlinkButtonCell> cell(
	[[HyperlinkButtonCell alloc] initTextCell:string]);
	[cell setControlSize:NSSmallControlSize];
	[button setCell:cell.get()];
	[button setButtonType:NSMomentaryPushInButton];
	[button setBezelStyle:NSRegularSquareBezelStyle];
	[button setTarget:self];
	[button setAction:@selector(showHelpPage:)];
	[subviews addObject:button.get()];

	// Call size-to-fit to fixup for the localized string.
	[GTMUILocalizerAndLayoutTweaker sizeToFitView:button.get()];
	return NSHeight([button frame]);
	}

	// Adds a 1px separator between sections. Returns the y position delta for the
	// next offset.
	- (CGFloat)addSeparatorToSubviews:(NSMutableArray*)subviews
	atOffset:(CGFloat)offset {
	scoped_nsobject<NSBox> spacer(
	[[NSBox alloc] initWithFrame:NSMakeRect(0, offset, kWindowWidth, 1)]);
	[spacer setBoxType:NSBoxSeparator];
	[spacer setBorderType:NSLineBorder];
	[spacer setAlphaValue:0.2];
	[subviews addObject:spacer.get()];
	return kVerticalSpacing;
	}

	// Takes in the bubble's height and the parent window, which should be a
	// BrowserWindow, and gets the proper anchor point for the bubble. The returned
	// point is in screen coordinates.
	- (NSPoint)anchorPointForWindowWithHeight:(CGFloat)bubbleHeight
	parentWindow:(NSWindow*)parent {
	BrowserWindowController* controller = [parent windowController];
	NSPoint origin = NSZeroPoint;
	if ([controller isKindOfClass:[BrowserWindowController class]]) {
	LocationBarViewMac* locationBar = [controller locationBarBridge];
	if (locationBar) {
	NSPoint bubblePoint = locationBar->GetPageInfoBubblePoint();
	origin = [parent convertBaseToScreen:bubblePoint];
	}
	}
	return origin;
	}

	@end