ios/chrome/browser/ui/omnibox/popup/omnibox_popup_presenter.mm - chromium/src - Git at Google

 // Copyright 2018 The Chromium Authors
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.

 #import "ios/chrome/browser/ui/omnibox/popup/omnibox_popup_presenter.h"

 #import "base/time/time.h"
 #import "ios/chrome/browser/shared/public/features/features.h"
 #import "ios/chrome/browser/shared/ui/util/layout_guide_names.h"
 #import "ios/chrome/browser/shared/ui/util/uikit_ui_util.h"
 #import "ios/chrome/browser/shared/ui/util/util_swift.h"
 #import "ios/chrome/browser/ui/omnibox/omnibox_ui_features.h"
 #import "ios/chrome/browser/ui/omnibox/popup/content_providing.h"
 #import "ios/chrome/browser/ui/omnibox/popup/omnibox_popup_container_view.h"
 #import "ios/chrome/browser/ui/toolbar/buttons/toolbar_configuration.h"
 #import "ios/chrome/browser/ui/toolbar/public/toolbar_constants.h"
 #import "ios/chrome/common/ui/colors/semantic_color_names.h"
 #import "ios/chrome/common/ui/util/constraints_ui_util.h"
 #import "ios/chrome/grit/ios_theme_resources.h"
 #import "ui/base/device_form_factor.h"
 #import "ui/gfx/ios/uikit_util.h"

 #if !defined(__has_feature) || !__has_feature(objc_arc)
 #error "This file requires ARC support."
 #endif

 namespace {
 const CGFloat kVerticalOffset = 6;
 const CGFloat kPopupBottomPaddingTablet = 80;

 /// Duration of the fade in animation.
 constexpr NSTimeInterval kFadeInAnimationDuration =
     base::Milliseconds(300).InSecondsF();
 /// Vertical offset of the suggestions when fading in.
 const CGFloat kFadeAnimationVerticalOffset = 12;

 }  // namespace

 @interface OmniboxPopupPresenter ()
 /// Constraint for the bottom anchor of the popup when form factor is phone.
 @property(nonatomic, strong) NSLayoutConstraint* bottomConstraintPhone;
 /// Constraint for the bottom anchor of the popup when form factor is tablet.
 @property(nonatomic, strong) NSLayoutConstraint* bottomConstraintTablet;

 @property(nonatomic, weak) id<OmniboxPopupPresenterDelegate> delegate;
 @property(nonatomic, weak) UIViewController<ContentProviding>* viewController;
 @property(nonatomic, strong) UIView* popupContainerView;
 /// Separator for the bottom edge of the popup on iPad.
 @property(nonatomic, strong) UIView* bottomSeparator;

 // The layout guide center to use to refer to the omnibox.
 @property(nonatomic, strong) LayoutGuideCenter* layoutGuideCenter;

 @end

 @implementation OmniboxPopupPresenter {
   /// Type of the toolbar that contains the omnibox when it's not focused. The
   /// animation of focusing/defocusing the omnibox changes depending on this
   /// position.
   ToolbarType _unfocusedOmniboxToolbarType;
 }

 - (instancetype)
     initWithPopupPresenterDelegate:(id<OmniboxPopupPresenterDelegate>)delegate
                popupViewController:
                    (UIViewController<ContentProviding>*)viewController
                  layoutGuideCenter:(LayoutGuideCenter*)layoutGuideCenter
                          incognito:(BOOL)incognito {
   self = [super init];
   if (self) {
     _delegate = delegate;
     _viewController = viewController;
     _layoutGuideCenter = layoutGuideCenter;

     // Popup uses same colors as the toolbar, so the ToolbarConfiguration is
     // used to get the style.
     ToolbarConfiguration* configuration = [[ToolbarConfiguration alloc]
         initWithStyle:incognito ? ToolbarStyle::kIncognito
                                 : ToolbarStyle::kNormal];

     UIView* containerView = [[OmniboxPopupContainerView alloc] init];
     [containerView addSubview:viewController.view];
     _popupContainerView = containerView;

     UIUserInterfaceStyle userInterfaceStyle =
         incognito ? UIUserInterfaceStyleDark : UIUserInterfaceStyleUnspecified;
     // Both the container view and the popup view controller need
     // overrideUserInterfaceStyle set because the overall popup background
     // comes from the container, but overrideUserInterfaceStyle won't
     // propagate from a view to any subviews in a different view controller.
     _popupContainerView.overrideUserInterfaceStyle = userInterfaceStyle;
     viewController.overrideUserInterfaceStyle = userInterfaceStyle;

     _popupContainerView.backgroundColor = [configuration backgroundColor];

     _popupContainerView.translatesAutoresizingMaskIntoConstraints = NO;
     viewController.view.translatesAutoresizingMaskIntoConstraints = NO;

     if (IsIpadPopoutOmniboxEnabled()) {
       _popupContainerView.clipsToBounds = YES;
       _popupContainerView.layer.cornerRadius = 11.0f;

       UIColor* borderColor =
           incognito ? [UIColor.whiteColor colorWithAlphaComponent:0.12]
                     : [UIColor.blackColor colorWithAlphaComponent:0.12];

       _popupContainerView.layer.borderColor = borderColor.CGColor;
       _popupContainerView.layer.borderWidth = 2.0f;
       AddSameConstraints(viewController.view, _popupContainerView);
     } else {
       AddSameConstraints(viewController.view, _popupContainerView);
     }

     // Add bottom separator. This will only be visible on iPad where
     // the omnibox doesn't fill the whole screen.
     _bottomSeparator = [[UIView alloc] initWithFrame:CGRectZero];
     _bottomSeparator.translatesAutoresizingMaskIntoConstraints = NO;
     _bottomSeparator.backgroundColor = [UIColor colorNamed:kToolbarShadowColor];

     [_popupContainerView addSubview:self.bottomSeparator];
     CGFloat separatorHeight =
         ui::AlignValueToUpperPixel(kToolbarSeparatorHeight);
     [NSLayoutConstraint activateConstraints:@[
       [self.bottomSeparator.heightAnchor
           constraintEqualToConstant:separatorHeight],
       [self.bottomSeparator.leadingAnchor
           constraintEqualToAnchor:_popupContainerView.leadingAnchor],
       [self.bottomSeparator.trailingAnchor
           constraintEqualToAnchor:_popupContainerView.trailingAnchor],
       [self.bottomSeparator.topAnchor
           constraintEqualToAnchor:_popupContainerView.bottomAnchor],
     ]];
   }
   return self;
 }

 - (void)updatePopupOnFocus:(BOOL)isFocusingOmnibox {
   BOOL popupHasContent = self.viewController.hasContent;
   BOOL popupIsOnscreen = self.popupContainerView.superview != nil;
   if (!popupHasContent && popupIsOnscreen) {
     // If intrinsic size is 0 and popup is onscreen, we want to remove the
     // popup view.
     if (ui::GetDeviceFormFactor() != ui::DEVICE_FORM_FACTOR_TABLET) {
       self.bottomConstraintPhone.active = NO;
       self.bottomSeparator.hidden = YES;
     } else if (!IsIpadPopoutOmniboxEnabled()) {
       self.bottomConstraintTablet.active = NO;
     }

     [self.viewController willMoveToParentViewController:nil];
     [self.popupContainerView removeFromSuperview];
     [self.viewController removeFromParentViewController];

     self.open = NO;
     [self.delegate popupDidCloseForPresenter:self];
   } else if (popupHasContent && !popupIsOnscreen) {
     // If intrinsic size is nonzero and popup is offscreen, we want to add it.
     UIViewController* parentVC =
         [self.delegate popupParentViewControllerForPresenter:self];
     [parentVC addChildViewController:self.viewController];
     [[self.delegate popupParentViewForPresenter:self]
         addSubview:self.popupContainerView];
     [self.viewController didMoveToParentViewController:parentVC];

     BOOL enableFocusAnimation =
         IsBottomOmniboxSteadyStateEnabled() && isFocusingOmnibox &&
         _unfocusedOmniboxToolbarType == ToolbarType::kSecondary;

     [self initialLayoutAnimated:enableFocusAnimation];

     if (ui::GetDeviceFormFactor() != ui::DEVICE_FORM_FACTOR_TABLET) {
       self.bottomConstraintPhone.active = YES;
       self.bottomSeparator.hidden = NO;
     } else if (!IsIpadPopoutOmniboxEnabled()) {
       self.bottomConstraintTablet.active = YES;
     }

     self.open = YES;
     [self.delegate popupDidOpenForPresenter:self];
   }
 }

 /// With popout omnibox, the popup might be in either of two states:
 /// a) regular x regular state, where the popup matches OB width
 /// b) compact state, where popup takes whole screen width
 /// Therefore, on trait collection change, re-add the popup and recreate the
 /// constraints to make sure the correct ones are used.
 - (void)updatePopupAfterTraitCollectionChange {
   DCHECK(IsIpadPopoutOmniboxEnabled());

   if (!self.open) {
     return;
   }

   // Re-add the popup container to break any existing constraints.
   [self.popupContainerView removeFromSuperview];
   [[self.delegate popupParentViewForPresenter:self]
       addSubview:self.popupContainerView];

   // Re-add necessary constraints.
   [self initialLayoutAnimated:NO];

   if (ui::GetDeviceFormFactor() != ui::DEVICE_FORM_FACTOR_TABLET) {
     self.bottomConstraintPhone.active = YES;
     self.bottomSeparator.hidden = NO;
   }
 }

 #pragma mark - ToolbarOmniboxConsumer

 - (void)steadyStateOmniboxMovedToToolbar:(ToolbarType)toolbarType {
   _unfocusedOmniboxToolbarType = toolbarType;
 }

 #pragma mark - Private

 /// Layouts the popup when it is just added to the view hierarchy.
 - (void)initialLayoutAnimated:(BOOL)isAnimated {
   UIView* popup = self.popupContainerView;
   // Creates the constraints if the view is newly added to the view hierarchy.

   // On phone form factor the popup is taking the full height.
   self.bottomConstraintPhone =
       [popup.bottomAnchor constraintEqualToAnchor:popup.superview.bottomAnchor];
   // On tablet form factor the popup is padded on the bottom to allow the user
   // to defocus the omnibox.
   self.bottomConstraintTablet = [popup.superview.bottomAnchor
       constraintGreaterThanOrEqualToAnchor:popup.bottomAnchor
                                   constant:kPopupBottomPaddingTablet];

   // Install in the superview the guide tracking the top omnibox.
   UILayoutGuide* topOmniboxGuide =
       [self.layoutGuideCenter makeLayoutGuideNamed:kTopOmniboxGuide];
   [[popup superview] addLayoutGuide:topOmniboxGuide];
   // Position the top anchor of the popup relatively to that layout guide.
   NSLayoutConstraint* topConstraint =
       [popup.topAnchor constraintEqualToAnchor:topOmniboxGuide.bottomAnchor
                                       constant:kVerticalOffset];

   NSMutableArray<NSLayoutConstraint*>* constraintsToActivate =
       [NSMutableArray arrayWithObject:topConstraint];

   if (IsIpadPopoutOmniboxEnabled() &&
       IsRegularXRegularSizeClass(self.popupContainerView)) {
     [constraintsToActivate addObjectsFromArray:@[
       [popup.leadingAnchor
           constraintEqualToAnchor:topOmniboxGuide.leadingAnchor],
       [popup.trailingAnchor
           constraintEqualToAnchor:topOmniboxGuide.trailingAnchor],
     ]];
   } else {
     [constraintsToActivate addObjectsFromArray:@[
       [popup.leadingAnchor
           constraintEqualToAnchor:popup.superview.leadingAnchor],
       [popup.trailingAnchor
           constraintEqualToAnchor:popup.superview.trailingAnchor],
     ]];
   }

   [NSLayoutConstraint activateConstraints:constraintsToActivate];

   [[popup superview] layoutIfNeeded];

   if (isAnimated) {
     CHECK(IsBottomOmniboxSteadyStateEnabled());
     popup.alpha = 0.0;
     topConstraint.constant = kVerticalOffset + kFadeAnimationVerticalOffset;
     [[popup superview] layoutIfNeeded];

     [UIView animateWithDuration:kFadeInAnimationDuration
                      animations:^{
                        popup.alpha = 1.0;
                        topConstraint.constant = kVerticalOffset;
                        [[popup superview] layoutIfNeeded];
                      }];
   }
 }

 @end
	// Copyright 2018 The Chromium Authors
	// Use of this source code is governed by a BSD-style license that can be
	// found in the LICENSE file.

	#import "ios/chrome/browser/ui/omnibox/popup/omnibox_popup_presenter.h"

	#import "base/time/time.h"
	#import "ios/chrome/browser/shared/public/features/features.h"
	#import "ios/chrome/browser/shared/ui/util/layout_guide_names.h"
	#import "ios/chrome/browser/shared/ui/util/uikit_ui_util.h"
	#import "ios/chrome/browser/shared/ui/util/util_swift.h"
	#import "ios/chrome/browser/ui/omnibox/omnibox_ui_features.h"
	#import "ios/chrome/browser/ui/omnibox/popup/content_providing.h"
	#import "ios/chrome/browser/ui/omnibox/popup/omnibox_popup_container_view.h"
	#import "ios/chrome/browser/ui/toolbar/buttons/toolbar_configuration.h"
	#import "ios/chrome/browser/ui/toolbar/public/toolbar_constants.h"
	#import "ios/chrome/common/ui/colors/semantic_color_names.h"
	#import "ios/chrome/common/ui/util/constraints_ui_util.h"
	#import "ios/chrome/grit/ios_theme_resources.h"
	#import "ui/base/device_form_factor.h"
	#import "ui/gfx/ios/uikit_util.h"

	#if !defined(__has_feature) \|\| !__has_feature(objc_arc)
	#error "This file requires ARC support."
	#endif

	namespace {
	const CGFloat kVerticalOffset = 6;
	const CGFloat kPopupBottomPaddingTablet = 80;

	/// Duration of the fade in animation.
	constexpr NSTimeInterval kFadeInAnimationDuration =
	base::Milliseconds(300).InSecondsF();
	/// Vertical offset of the suggestions when fading in.
	const CGFloat kFadeAnimationVerticalOffset = 12;

	} // namespace

	@interface OmniboxPopupPresenter ()
	/// Constraint for the bottom anchor of the popup when form factor is phone.
	@property(nonatomic, strong) NSLayoutConstraint* bottomConstraintPhone;
	/// Constraint for the bottom anchor of the popup when form factor is tablet.
	@property(nonatomic, strong) NSLayoutConstraint* bottomConstraintTablet;

	@property(nonatomic, weak) id<OmniboxPopupPresenterDelegate> delegate;
	@property(nonatomic, weak) UIViewController<ContentProviding>* viewController;
	@property(nonatomic, strong) UIView* popupContainerView;
	/// Separator for the bottom edge of the popup on iPad.
	@property(nonatomic, strong) UIView* bottomSeparator;

	// The layout guide center to use to refer to the omnibox.
	@property(nonatomic, strong) LayoutGuideCenter* layoutGuideCenter;

	@end

	@implementation OmniboxPopupPresenter {
	/// Type of the toolbar that contains the omnibox when it's not focused. The
	/// animation of focusing/defocusing the omnibox changes depending on this
	/// position.
	ToolbarType _unfocusedOmniboxToolbarType;
	}

	- (instancetype)
	initWithPopupPresenterDelegate:(id<OmniboxPopupPresenterDelegate>)delegate
	popupViewController:
	(UIViewController<ContentProviding>*)viewController
	layoutGuideCenter:(LayoutGuideCenter*)layoutGuideCenter
	incognito:(BOOL)incognito {
	self = [super init];
	if (self) {
	_delegate = delegate;
	_viewController = viewController;
	_layoutGuideCenter = layoutGuideCenter;

	// Popup uses same colors as the toolbar, so the ToolbarConfiguration is
	// used to get the style.
	ToolbarConfiguration* configuration = [[ToolbarConfiguration alloc]
	initWithStyle:incognito ? ToolbarStyle::kIncognito
	: ToolbarStyle::kNormal];

	UIView* containerView = [[OmniboxPopupContainerView alloc] init];
	[containerView addSubview:viewController.view];
	_popupContainerView = containerView;

	UIUserInterfaceStyle userInterfaceStyle =
	incognito ? UIUserInterfaceStyleDark : UIUserInterfaceStyleUnspecified;
	// Both the container view and the popup view controller need
	// overrideUserInterfaceStyle set because the overall popup background
	// comes from the container, but overrideUserInterfaceStyle won't
	// propagate from a view to any subviews in a different view controller.
	_popupContainerView.overrideUserInterfaceStyle = userInterfaceStyle;
	viewController.overrideUserInterfaceStyle = userInterfaceStyle;

	_popupContainerView.backgroundColor = [configuration backgroundColor];

	_popupContainerView.translatesAutoresizingMaskIntoConstraints = NO;
	viewController.view.translatesAutoresizingMaskIntoConstraints = NO;

	if (IsIpadPopoutOmniboxEnabled()) {
	_popupContainerView.clipsToBounds = YES;
	_popupContainerView.layer.cornerRadius = 11.0f;

	UIColor* borderColor =
	incognito ? [UIColor.whiteColor colorWithAlphaComponent:0.12]
	: [UIColor.blackColor colorWithAlphaComponent:0.12];

	_popupContainerView.layer.borderColor = borderColor.CGColor;
	_popupContainerView.layer.borderWidth = 2.0f;
	AddSameConstraints(viewController.view, _popupContainerView);
	} else {
	AddSameConstraints(viewController.view, _popupContainerView);
	}

	// Add bottom separator. This will only be visible on iPad where
	// the omnibox doesn't fill the whole screen.
	_bottomSeparator = [[UIView alloc] initWithFrame:CGRectZero];
	_bottomSeparator.translatesAutoresizingMaskIntoConstraints = NO;
	_bottomSeparator.backgroundColor = [UIColor colorNamed:kToolbarShadowColor];

	[_popupContainerView addSubview:self.bottomSeparator];
	CGFloat separatorHeight =
	ui::AlignValueToUpperPixel(kToolbarSeparatorHeight);
	[NSLayoutConstraint activateConstraints:@[
	[self.bottomSeparator.heightAnchor
	constraintEqualToConstant:separatorHeight],
	[self.bottomSeparator.leadingAnchor
	constraintEqualToAnchor:_popupContainerView.leadingAnchor],
	[self.bottomSeparator.trailingAnchor
	constraintEqualToAnchor:_popupContainerView.trailingAnchor],
	[self.bottomSeparator.topAnchor
	constraintEqualToAnchor:_popupContainerView.bottomAnchor],
	]];
	}
	return self;
	}

	- (void)updatePopupOnFocus:(BOOL)isFocusingOmnibox {
	BOOL popupHasContent = self.viewController.hasContent;
	BOOL popupIsOnscreen = self.popupContainerView.superview != nil;
	if (!popupHasContent && popupIsOnscreen) {
	// If intrinsic size is 0 and popup is onscreen, we want to remove the
	// popup view.
	if (ui::GetDeviceFormFactor() != ui::DEVICE_FORM_FACTOR_TABLET) {
	self.bottomConstraintPhone.active = NO;
	self.bottomSeparator.hidden = YES;
	} else if (!IsIpadPopoutOmniboxEnabled()) {
	self.bottomConstraintTablet.active = NO;
	}

	[self.viewController willMoveToParentViewController:nil];
	[self.popupContainerView removeFromSuperview];
	[self.viewController removeFromParentViewController];

	self.open = NO;
	[self.delegate popupDidCloseForPresenter:self];
	} else if (popupHasContent && !popupIsOnscreen) {
	// If intrinsic size is nonzero and popup is offscreen, we want to add it.
	UIViewController* parentVC =
	[self.delegate popupParentViewControllerForPresenter:self];
	[parentVC addChildViewController:self.viewController];
	[[self.delegate popupParentViewForPresenter:self]
	addSubview:self.popupContainerView];
	[self.viewController didMoveToParentViewController:parentVC];

	BOOL enableFocusAnimation =
	IsBottomOmniboxSteadyStateEnabled() && isFocusingOmnibox &&
	_unfocusedOmniboxToolbarType == ToolbarType::kSecondary;

	[self initialLayoutAnimated:enableFocusAnimation];

	if (ui::GetDeviceFormFactor() != ui::DEVICE_FORM_FACTOR_TABLET) {
	self.bottomConstraintPhone.active = YES;
	self.bottomSeparator.hidden = NO;
	} else if (!IsIpadPopoutOmniboxEnabled()) {
	self.bottomConstraintTablet.active = YES;
	}

	self.open = YES;
	[self.delegate popupDidOpenForPresenter:self];
	}
	}

	/// With popout omnibox, the popup might be in either of two states:
	/// a) regular x regular state, where the popup matches OB width
	/// b) compact state, where popup takes whole screen width
	/// Therefore, on trait collection change, re-add the popup and recreate the
	/// constraints to make sure the correct ones are used.
	- (void)updatePopupAfterTraitCollectionChange {
	DCHECK(IsIpadPopoutOmniboxEnabled());

	if (!self.open) {
	return;
	}

	// Re-add the popup container to break any existing constraints.
	[self.popupContainerView removeFromSuperview];
	[[self.delegate popupParentViewForPresenter:self]
	addSubview:self.popupContainerView];

	// Re-add necessary constraints.
	[self initialLayoutAnimated:NO];

	if (ui::GetDeviceFormFactor() != ui::DEVICE_FORM_FACTOR_TABLET) {
	self.bottomConstraintPhone.active = YES;
	self.bottomSeparator.hidden = NO;
	}
	}

	#pragma mark - ToolbarOmniboxConsumer

	- (void)steadyStateOmniboxMovedToToolbar:(ToolbarType)toolbarType {
	_unfocusedOmniboxToolbarType = toolbarType;
	}

	#pragma mark - Private

	/// Layouts the popup when it is just added to the view hierarchy.
	- (void)initialLayoutAnimated:(BOOL)isAnimated {
	UIView* popup = self.popupContainerView;
	// Creates the constraints if the view is newly added to the view hierarchy.

	// On phone form factor the popup is taking the full height.
	self.bottomConstraintPhone =
	[popup.bottomAnchor constraintEqualToAnchor:popup.superview.bottomAnchor];
	// On tablet form factor the popup is padded on the bottom to allow the user
	// to defocus the omnibox.
	self.bottomConstraintTablet = [popup.superview.bottomAnchor
	constraintGreaterThanOrEqualToAnchor:popup.bottomAnchor
	constant:kPopupBottomPaddingTablet];

	// Install in the superview the guide tracking the top omnibox.
	UILayoutGuide* topOmniboxGuide =
	[self.layoutGuideCenter makeLayoutGuideNamed:kTopOmniboxGuide];
	[[popup superview] addLayoutGuide:topOmniboxGuide];
	// Position the top anchor of the popup relatively to that layout guide.
	NSLayoutConstraint* topConstraint =
	[popup.topAnchor constraintEqualToAnchor:topOmniboxGuide.bottomAnchor
	constant:kVerticalOffset];

	NSMutableArray<NSLayoutConstraint> constraintsToActivate =
	[NSMutableArray arrayWithObject:topConstraint];

	if (IsIpadPopoutOmniboxEnabled() &&
	IsRegularXRegularSizeClass(self.popupContainerView)) {
	[constraintsToActivate addObjectsFromArray:@[
	[popup.leadingAnchor
	constraintEqualToAnchor:topOmniboxGuide.leadingAnchor],
	[popup.trailingAnchor
	constraintEqualToAnchor:topOmniboxGuide.trailingAnchor],
	]];
	} else {
	[constraintsToActivate addObjectsFromArray:@[
	[popup.leadingAnchor
	constraintEqualToAnchor:popup.superview.leadingAnchor],
	[popup.trailingAnchor
	constraintEqualToAnchor:popup.superview.trailingAnchor],
	]];
	}

	[NSLayoutConstraint activateConstraints:constraintsToActivate];

	[[popup superview] layoutIfNeeded];

	if (isAnimated) {
	CHECK(IsBottomOmniboxSteadyStateEnabled());
	popup.alpha = 0.0;
	topConstraint.constant = kVerticalOffset + kFadeAnimationVerticalOffset;
	[[popup superview] layoutIfNeeded];

	[UIView animateWithDuration:kFadeInAnimationDuration
	animations:^{
	popup.alpha = 1.0;
	topConstraint.constant = kVerticalOffset;
	[[popup superview] layoutIfNeeded];
	}];
	}
	}

	@end