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| 1 // Copyright 2016 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 "ios/clean/chrome/browser/ui/tab_strip/tab_strip_container_view_controll
er.h" | |
| 6 | |
| 7 #import "base/mac/foundation_util.h" | |
| 8 #import "ios/clean/chrome/browser/ui/actions/tab_strip_actions.h" | |
| 9 #import "ios/clean/chrome/browser/ui/ui_types.h" | |
| 10 | |
| 11 #if !defined(__has_feature) || !__has_feature(objc_arc) | |
| 12 #error "This file requires ARC support." | |
| 13 #endif | |
| 14 | |
| 15 namespace { | |
| 16 CGFloat kStripHeight = 200.0; | |
| 17 } | |
| 18 | |
| 19 @interface TabStripContainerViewController ()<TabStripActions> | |
| 20 | |
| 21 // Whichever view controller is at the top of the screen. This view controller | |
| 22 // controls the status bar. | |
| 23 @property(nonatomic, weak) UIViewController* topmostViewController; | |
| 24 | |
| 25 @property(nonatomic, strong) Constraints* contentConstraintsWithStrip; | |
| 26 @property(nonatomic, strong) Constraints* contentConstraintsWithoutStrip; | |
| 27 @property(nonatomic, strong) Constraints* stripConstraints; | |
| 28 | |
| 29 // Cache for forwarding methods to child view controllers. | |
| 30 @property(nonatomic, assign) SEL actionToForward; | |
| 31 @property(nonatomic, weak) UIResponder* forwardingTarget; | |
| 32 | |
| 33 @property(nonatomic, strong) NSLayoutConstraint* stripHeightConstraint; | |
| 34 | |
| 35 // Contained view controller utility methods. This method cannot be named | |
| 36 //-removeChildViewController:, as that is a private superclass method. | |
| 37 - (void)detachChildViewController:(UIViewController*)viewController; | |
| 38 | |
| 39 // Called after a new content view controller is set, but before | |
| 40 // |-didMoveToParentViewController:| is called on that view controller. | |
| 41 - (void)didAddContentViewController; | |
| 42 | |
| 43 // Called after a new strip view controller is set, but before | |
| 44 // |-didMoveToParentViewController:| is called on that view controller. | |
| 45 - (void)didAddTabStripViewController; | |
| 46 | |
| 47 // Methods to populate the constraint properties. | |
| 48 - (void)updateContentConstraintsWithStrip; | |
| 49 - (void)updateContentConstraintsWithoutStrip; | |
| 50 - (void)updateStripConstraints; | |
| 51 | |
| 52 @end | |
| 53 | |
| 54 @implementation TabStripContainerViewController | |
| 55 | |
| 56 @synthesize contentViewController = _contentViewController; | |
| 57 @synthesize tabStripViewController = _tabStripViewController; | |
| 58 @synthesize topmostViewController = _topmostViewController; | |
| 59 @synthesize contentConstraintsWithStrip = _contentConstraintsWithStrip; | |
| 60 @synthesize contentConstraintsWithoutStrip = _contentConstraintsWithoutStrip; | |
| 61 @synthesize stripConstraints = _stripConstraints; | |
| 62 @synthesize actionToForward = _actionToForward; | |
| 63 @synthesize forwardingTarget = _forwardingTarget; | |
| 64 @synthesize stripHeightConstraint = _stripHeightConstraint; | |
| 65 | |
| 66 #pragma mark - Public properties | |
| 67 | |
| 68 - (void)setContentViewController:(UIViewController*)contentViewController { | |
| 69 if (self.contentViewController == contentViewController) | |
| 70 return; | |
| 71 | |
| 72 // Remove the current content view controller, if any. | |
| 73 [NSLayoutConstraint | |
| 74 deactivateConstraints:self.contentConstraintsWithoutStrip]; | |
| 75 [NSLayoutConstraint deactivateConstraints:self.contentConstraintsWithStrip]; | |
| 76 [self detachChildViewController:self.contentViewController]; | |
| 77 | |
| 78 // Add the new content view controller. | |
| 79 [self addChildViewController:contentViewController]; | |
| 80 contentViewController.view.translatesAutoresizingMaskIntoConstraints = NO; | |
| 81 [self.view addSubview:contentViewController.view]; | |
| 82 _contentViewController = contentViewController; | |
| 83 [self didAddContentViewController]; | |
| 84 [self.view setNeedsUpdateConstraints]; | |
| 85 [self.contentViewController didMoveToParentViewController:self]; | |
| 86 } | |
| 87 | |
| 88 - (void)setTabStripViewController:(UIViewController*)tabStripViewController { | |
| 89 if (self.tabStripViewController == tabStripViewController) | |
| 90 return; | |
| 91 | |
| 92 // Remove the current strip view controller, if any. | |
| 93 [NSLayoutConstraint deactivateConstraints:self.stripConstraints]; | |
| 94 [NSLayoutConstraint deactivateConstraints:self.contentConstraintsWithStrip]; | |
| 95 [self detachChildViewController:self.tabStripViewController]; | |
| 96 | |
| 97 // Add the new strip view controller. | |
| 98 [self addChildViewController:tabStripViewController]; | |
| 99 tabStripViewController.view.translatesAutoresizingMaskIntoConstraints = NO; | |
| 100 [self.view addSubview:tabStripViewController.view]; | |
| 101 _tabStripViewController = tabStripViewController; | |
| 102 [self didAddTabStripViewController]; | |
| 103 [self.view setNeedsUpdateConstraints]; | |
| 104 [self.tabStripViewController didMoveToParentViewController:self]; | |
| 105 } | |
| 106 | |
| 107 #pragma mark - UIViewController | |
| 108 | |
| 109 - (void)updateViewConstraints { | |
| 110 if (self.tabStripViewController) { | |
| 111 [NSLayoutConstraint activateConstraints:self.stripConstraints]; | |
| 112 [NSLayoutConstraint activateConstraints:self.contentConstraintsWithStrip]; | |
| 113 } else { | |
| 114 [NSLayoutConstraint | |
| 115 activateConstraints:self.contentConstraintsWithoutStrip]; | |
| 116 } | |
| 117 [super updateViewConstraints]; | |
| 118 } | |
| 119 | |
| 120 - (UIViewController*)childViewControllerForStatusBarHidden { | |
| 121 return self.topmostViewController; | |
| 122 } | |
| 123 | |
| 124 - (UIViewController*)childViewControllerForStatusBarStyle { | |
| 125 return self.topmostViewController; | |
| 126 } | |
| 127 | |
| 128 #pragma mark - UIResponder | |
| 129 | |
| 130 // Before forwarding actions up the responder chain, give both contained | |
| 131 // view controllers a chance to handle them. | |
| 132 - (BOOL)canPerformAction:(SEL)action withSender:(id)sender { | |
| 133 self.actionToForward = nullptr; | |
| 134 self.forwardingTarget = nil; | |
| 135 for (UIResponder* responder in | |
| 136 @[ self.contentViewController, self.tabStripViewController ]) { | |
| 137 if ([responder canPerformAction:action withSender:sender]) { | |
| 138 self.actionToForward = action; | |
| 139 self.forwardingTarget = responder; | |
| 140 return YES; | |
| 141 } | |
| 142 } | |
| 143 return [super canPerformAction:action withSender:sender]; | |
| 144 } | |
| 145 | |
| 146 #pragma mark - NSObject method forwarding | |
| 147 | |
| 148 - (id)forwardingTargetForSelector:(SEL)aSelector { | |
| 149 if (aSelector == self.actionToForward) { | |
| 150 return self.forwardingTarget; | |
| 151 } | |
| 152 return nil; | |
| 153 } | |
| 154 | |
| 155 #pragma mark - TabStripActions | |
| 156 | |
| 157 // Action to toggle visibility of tab strip. | |
| 158 - (void)showTabStrip:(id)sender { | |
| 159 self.stripHeightConstraint.constant = kStripHeight; | |
| 160 } | |
| 161 | |
| 162 - (void)hideTabStrip:(id)sender { | |
| 163 self.stripHeightConstraint.constant = 0.0f; | |
| 164 } | |
| 165 | |
| 166 #pragma mark - MenuPresentationDelegate | |
| 167 | |
| 168 - (CGRect)frameForMenuPresentation:(UIPresentationController*)presentation { | |
| 169 CGSize menuSize = presentation.presentedView.frame.size; | |
| 170 CGRect menuRect; | |
| 171 menuRect.size = menuSize; | |
| 172 | |
| 173 CGRect menuOriginRect = [self rectForZoomWithKey:@"" inView:self.view]; | |
| 174 if (CGRectIsNull(menuOriginRect)) { | |
| 175 menuRect.origin = CGPointMake(50, 50); | |
| 176 return menuRect; | |
| 177 } | |
| 178 // Calculate which corner of the menu the origin rect is in. This is | |
| 179 // determined by comparing frames, and thus is RTL-independent. | |
| 180 if (CGRectGetMinX(menuOriginRect) - CGRectGetMinX(self.view.bounds) < | |
| 181 CGRectGetMaxX(self.view.bounds) - CGRectGetMaxX(menuOriginRect)) { | |
| 182 // Origin rect is closer to the left edge of |self.view| than to the right. | |
| 183 menuRect.origin.x = CGRectGetMinX(menuOriginRect); | |
| 184 } else { | |
| 185 // Origin rect is closer to the right edge of |self.view| than to the left. | |
| 186 menuRect.origin.x = CGRectGetMaxX(menuOriginRect) - menuSize.width; | |
| 187 } | |
| 188 | |
| 189 if (CGRectGetMinY(menuOriginRect) - CGRectGetMinY(self.view.bounds) < | |
| 190 CGRectGetMaxY(self.view.bounds) - CGRectGetMaxY(menuOriginRect)) { | |
| 191 // Origin rect is closer to the top edge of |self.view| than to the bottom. | |
| 192 menuRect.origin.y = CGRectGetMinY(menuOriginRect); | |
| 193 } else { | |
| 194 // Origin rect is closer to the bottom edge of |self.view| than to the top. | |
| 195 menuRect.origin.y = CGRectGetMaxY(menuOriginRect) - menuSize.height; | |
| 196 } | |
| 197 | |
| 198 return menuRect; | |
| 199 } | |
| 200 | |
| 201 #pragma mark - ZoomTransitionDelegate | |
| 202 | |
| 203 - (CGRect)rectForZoomWithKey:(NSObject*)key inView:(UIView*)view { | |
| 204 if ([self.contentViewController | |
| 205 conformsToProtocol:@protocol(ZoomTransitionDelegate)]) { | |
| 206 return [reinterpret_cast<id<ZoomTransitionDelegate>>( | |
| 207 self.contentViewController) rectForZoomWithKey:key | |
| 208 inView:view]; | |
| 209 } | |
| 210 return CGRectNull; | |
| 211 } | |
| 212 | |
| 213 #pragma mark - Private methods | |
| 214 | |
| 215 - (void)detachChildViewController:(UIViewController*)viewController { | |
| 216 if (viewController.parentViewController != self) | |
| 217 return; | |
| 218 [viewController willMoveToParentViewController:nil]; | |
| 219 [viewController.view removeFromSuperview]; | |
| 220 [viewController removeFromParentViewController]; | |
| 221 } | |
| 222 | |
| 223 - (void)didAddContentViewController { | |
| 224 if (self.tabStripViewController) { | |
| 225 [self updateContentConstraintsWithStrip]; | |
| 226 } else { | |
| 227 self.topmostViewController = self.contentViewController; | |
| 228 [self updateContentConstraintsWithoutStrip]; | |
| 229 } | |
| 230 } | |
| 231 | |
| 232 - (void)didAddTabStripViewController { | |
| 233 [self updateStripConstraints]; | |
| 234 // If there's already a content view controller, update the constraints for | |
| 235 // that, too. | |
| 236 if (self.contentViewController) { | |
| 237 [self updateContentConstraintsWithStrip]; | |
| 238 } | |
| 239 self.topmostViewController = self.tabStripViewController; | |
| 240 } | |
| 241 | |
| 242 - (void)updateContentConstraintsWithoutStrip { | |
| 243 UIView* contentView = self.contentViewController.view; | |
| 244 self.contentConstraintsWithoutStrip = @[ | |
| 245 [contentView.topAnchor constraintEqualToAnchor:self.view.topAnchor], | |
| 246 [contentView.bottomAnchor constraintEqualToAnchor:self.view.bottomAnchor], | |
| 247 [contentView.leadingAnchor constraintEqualToAnchor:self.view.leadingAnchor], | |
| 248 [contentView.trailingAnchor | |
| 249 constraintEqualToAnchor:self.view.trailingAnchor], | |
| 250 ]; | |
| 251 } | |
| 252 | |
| 253 - (void)updateContentConstraintsWithStrip { | |
| 254 UIView* contentView = self.contentViewController.view; | |
| 255 self.contentConstraintsWithStrip = @[ | |
| 256 [contentView.topAnchor | |
| 257 constraintEqualToAnchor:self.tabStripViewController.view.bottomAnchor], | |
| 258 [contentView.bottomAnchor constraintEqualToAnchor:self.view.bottomAnchor], | |
| 259 [contentView.leadingAnchor constraintEqualToAnchor:self.view.leadingAnchor], | |
| 260 [contentView.trailingAnchor | |
| 261 constraintEqualToAnchor:self.view.trailingAnchor], | |
| 262 ]; | |
| 263 } | |
| 264 | |
| 265 - (void)updateStripConstraints { | |
| 266 UIView* stripView = self.tabStripViewController.view; | |
| 267 self.stripHeightConstraint = | |
| 268 [stripView.heightAnchor constraintEqualToConstant:0.0]; | |
| 269 self.stripConstraints = @[ | |
| 270 [stripView.topAnchor constraintEqualToAnchor:self.view.topAnchor], | |
| 271 [stripView.leadingAnchor constraintEqualToAnchor:self.view.leadingAnchor], | |
| 272 [stripView.trailingAnchor constraintEqualToAnchor:self.view.trailingAnchor], | |
| 273 self.stripHeightConstraint, | |
| 274 ]; | |
| 275 } | |
| 276 | |
| 277 @end | |
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Chromium Code Reviews
Issue 2711343003:
[tab_container] Remove tab_strip container (Closed)
