Upstream Chrome on iOS source code [3/11].

ios/chrome/browser/ui/bookmarks/bars/bookmark_navigation_bar.mm

+// Copyright 2014 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 "ios/chrome/browser/ui/bookmarks/bars/bookmark_navigation_bar.h"
+
+#import <QuartzCore/QuartzCore.h>
+
+#include "base/mac/objc_property_releaser.h"
+#include "base/mac/scoped_nsobject.h"
+#import "ios/chrome/browser/ui/bookmarks/bookmark_extended_button.h"
+#import "ios/chrome/browser/ui/bookmarks/bookmark_utils_ios.h"
+#import "ios/chrome/browser/ui/rtl_geometry.h"
+#include "ios/chrome/browser/ui/ui_util.h"
+#include "ios/chrome/grit/ios_strings.h"
+#import "ios/third_party/material_components_ios/src/components/Typography/src/MaterialTypography.h"
+#include "ui/base/l10n/l10n_util.h"
+
+namespace {
+const CGFloat kButtonHeight = 24;
+const CGFloat kButtonWidth = 24;
+
+// The height of the content, not including possible extra space for the status
+// bar.
+const CGFloat kContentHeight = 56;
+// The distance between buttons.
+const CGFloat kInterButtonMargin = 24;
+};  // namespace
+
+@interface BookmarkNavigationBar () {
+  base::mac::ObjCPropertyReleaser _propertyReleaser_BookmarkNavigationBar;
+}
+@property(nonatomic, retain) BookmarkExtendedButton* cancelButton;
+// All subviews are added to |contentView|, which allows easy repositioning of
+// the content to account for iOS 6 and iOS 7+ layout differences.
+@property(nonatomic, retain) UIView* contentView;
+@property(nonatomic, retain) BookmarkExtendedButton* backButton;
+@property(nonatomic, retain) BookmarkExtendedButton* editButton;
+@property(nonatomic, retain) BookmarkExtendedButton* menuButton;
+@property(nonatomic, retain) UILabel* titleLabel;
+@end
+
+@implementation BookmarkNavigationBar
+@synthesize backButton = _backButton;
+@synthesize cancelButton = _cancelButton;
+@synthesize contentView = _contentView;
+@synthesize editButton = _editButton;
+@synthesize menuButton = _menuButton;
+@synthesize titleLabel = _titleLabel;
+
+- (id)initWithFrame:(CGRect)outerFrame {
+  self = [super initWithFrame:outerFrame];
+  if (self) {
+    _propertyReleaser_BookmarkNavigationBar.Init(self,
+                                                 [BookmarkNavigationBar class]);
+
+    self.backgroundColor = bookmark_utils_ios::mainBackgroundColor();
+    self.autoresizingMask = UIViewAutoresizingFlexibleBottomMargin |
+                            UIViewAutoresizingFlexibleWidth;
+
+    // Position the content view at the bottom of |self|.
+    CGFloat contentY = CGRectGetHeight(outerFrame) - kContentHeight;
+    self.contentView = base::scoped_nsobject<UIView>([[UIView alloc]
+        initWithFrame:CGRectMake(0, contentY, CGRectGetWidth(outerFrame),
+                                 kContentHeight)]);
+    [self addSubview:self.contentView];
+    self.contentView.backgroundColor = [UIColor clearColor];
+    self.contentView.autoresizingMask =
+        UIViewAutoresizingFlexibleTopMargin | UIViewAutoresizingFlexibleWidth;
+    CGRect contentViewBounds = self.contentView.bounds;
+
+    base::scoped_nsobject<UILabel> label([[UILabel alloc] init]);
+    self.titleLabel = label;
+    self.titleLabel.textColor = [UIColor colorWithWhite:68 / 255.0 alpha:1.0];
+    self.titleLabel.backgroundColor = [UIColor clearColor];
+    self.titleLabel.font = [MDCTypography titleFont];
+    [self.contentView addSubview:self.titleLabel];
+
+    // The buttons should be on the right side of the screen.
+    CGFloat buttonVerticalMargin =
+        floor((CGRectGetHeight(contentViewBounds) - kButtonHeight) / 2);
+    CGFloat buttonSideMargin = buttonVerticalMargin;
+    if (IsIPadIdiom())
+      buttonSideMargin = kInterButtonMargin;
+
+    CGFloat buttonX = CGRectGetWidth(contentViewBounds) - buttonSideMargin;
+
+    if (!IsIPadIdiom()) {
+      base::scoped_nsobject<BookmarkExtendedButton> button(
+          [[BookmarkExtendedButton alloc] initWithFrame:CGRectZero]);
+
+      self.cancelButton = button;
+      self.cancelButton.autoresizingMask =
+          UIViewAutoresizingFlexibleLeadingMargin();
+      self.cancelButton.backgroundColor = [UIColor clearColor];
+      [self.cancelButton
+          setTitle:l10n_util::GetNSString(IDS_IOS_NAVIGATION_BAR_DONE_BUTTON)
+                       .uppercaseString
+          forState:UIControlStateNormal];
+      [self.cancelButton
+          setTitleColor:[UIColor colorWithWhite:68 / 255.0 alpha:1.0]
+               forState:UIControlStateNormal];
+      [[self.cancelButton titleLabel] setFont:[MDCTypography buttonFont]];
+      self.cancelButton.accessibilityLabel =
+          l10n_util::GetNSString(IDS_IOS_NAVIGATION_BAR_DONE_BUTTON);
+      self.cancelButton.accessibilityIdentifier = @"Exit";
+
+      // Size the button.
+      [self.cancelButton sizeToFit];
+      buttonX = buttonX - CGRectGetWidth(self.cancelButton.bounds);
+      LayoutRect cancelButtonLayout = LayoutRectMake(
+          buttonX, CGRectGetWidth(self.bounds), buttonVerticalMargin,
+          CGRectGetWidth(self.cancelButton.bounds), kButtonHeight);
+      self.cancelButton.frame = LayoutRectGetRect(cancelButtonLayout);
+      self.cancelButton.extendedEdges =
+          UIEdgeInsetsMake(buttonVerticalMargin, kInterButtonMargin / 2.0,
+                           buttonVerticalMargin, buttonSideMargin);
+
+      [self.contentView addSubview:self.cancelButton];
+
+      buttonX = buttonX - kInterButtonMargin;
+    }
+
+    CGRect buttonFrame = LayoutRectGetRect(
+        LayoutRectMake(buttonX - kButtonWidth, CGRectGetWidth(self.bounds),
+                       buttonVerticalMargin, kButtonWidth, kButtonHeight));
+    UIEdgeInsets buttonInsets =
+        UIEdgeInsetsMake(buttonVerticalMargin, kInterButtonMargin / 2.0,
+                         buttonVerticalMargin, kInterButtonMargin / 2.0);
+
+    base::scoped_nsobject<BookmarkExtendedButton> editButton(
+        [[BookmarkExtendedButton alloc] initWithFrame:buttonFrame]);
+    self.editButton = editButton;
+    self.editButton.extendedEdges = buttonInsets;
+    self.editButton.autoresizingMask =
+        UIViewAutoresizingFlexibleLeadingMargin();
+    self.editButton.backgroundColor = [UIColor clearColor];
+    UIImage* editImage = [UIImage imageNamed:@"bookmark_gray_edit"];
+    [self.editButton setBackgroundImage:editImage
+                               forState:UIControlStateNormal];
+    self.editButton.accessibilityLabel =
+        l10n_util::GetNSString(IDS_IOS_BOOKMARK_NEW_EDIT_BUTTON_LABEL);
+    self.editButton.accessibilityIdentifier = @"Edit_navigation_bar";
+    [self.contentView addSubview:self.editButton];
+
+    CGRect leftButtonFrame = LayoutRectGetRect(
+        LayoutRectMake(buttonSideMargin, CGRectGetWidth(self.bounds),
+                       buttonVerticalMargin, kButtonWidth, kButtonHeight));
+    UIEdgeInsets leftButtonInsets =
+        UIEdgeInsetsMake(buttonVerticalMargin, buttonSideMargin,
+                         buttonVerticalMargin, buttonSideMargin);
+
+    base::scoped_nsobject<BookmarkExtendedButton> menuButton(
+        [[BookmarkExtendedButton alloc] initWithFrame:leftButtonFrame]);
+    self.menuButton = menuButton;
+    self.menuButton.extendedEdges = leftButtonInsets;
+    self.menuButton.autoresizingMask =
+        UIViewAutoresizingFlexibleTrailingMargin();
+    self.menuButton.backgroundColor = [UIColor clearColor];
+    UIImage* menuImage = [UIImage imageNamed:@"bookmark_gray_menu"];
+    [self.menuButton setBackgroundImage:menuImage
+                               forState:UIControlStateNormal];
+    self.menuButton.accessibilityLabel =
+        l10n_util::GetNSString(IDS_IOS_BOOKMARK_NEW_MENU_LABEL);
+    self.menuButton.accessibilityIdentifier = @"Menu";
+    [self.contentView addSubview:self.menuButton];
+    self.menuButton.hidden = YES;
+    base::scoped_nsobject<BookmarkExtendedButton> backButton(
+        [[BookmarkExtendedButton alloc] initWithFrame:leftButtonFrame]);
+    self.backButton = backButton;
+    self.backButton.extendedEdges = leftButtonInsets;
+    self.backButton.autoresizingMask =
+        UIViewAutoresizingFlexibleTrailingMargin();
+    self.backButton.backgroundColor = [UIColor clearColor];
+    UIImage* backImage = [UIImage imageNamed:@"bookmark_gray_back"];
+    [self.backButton setBackgroundImage:backImage
+                               forState:UIControlStateNormal];
+    self.backButton.accessibilityLabel =
+        l10n_util::GetNSString(IDS_IOS_BOOKMARK_NEW_BACK_LABEL);
+    self.backButton.accessibilityIdentifier = @"Parent";
+    self.backButton.alpha = 0;
+    [self.contentView addSubview:self.backButton];
+
+    [self setNeedsLayout];
+  }
+  return self;
+}
+
+- (void)layoutSubviews {
+  [super layoutSubviews];
+
+  // When the alpha of the button is less than this amount, the title is
+  // allowed to overrun the button. Generally, layoutSubviews should only be
+  // called with buttons having an alpha of 0.0 or 1.0, so the value of this
+  // constant doesn't matter too much.
+  const CGFloat buttonAlphaForTitleOverrun = 0.1;
+
+  LayoutOffset labelTrailing = 0;
+
+  // The title should not overrun the cancel or edit buttons.
+  if (self.editButton && self.editButton.alpha > buttonAlphaForTitleOverrun) {
+    labelTrailing = CGRectGetTrailingLayoutOffsetInBoundingRect(
+                        self.editButton.frame, self.contentView.bounds) +
+                    CGRectGetWidth(self.editButton.frame) + kInterButtonMargin;
+  } else if (self.cancelButton) {
+    labelTrailing = CGRectGetTrailingLayoutOffsetInBoundingRect(
+                        self.cancelButton.frame, self.contentView.bounds) +
+                    CGRectGetWidth(self.cancelButton.frame) +
+                    kInterButtonMargin;
+  }
+
+  CGRect leadingRect = self.menuButton.frame;
+  if (!bookmark_utils_ios::bookmarkMenuIsInSlideInPanel() &&
+      self.backButton.alpha < buttonAlphaForTitleOverrun) {
+    leadingRect = self.backButton.frame;
+  }
+
+  LayoutOffset labelLeading = CGRectGetLeadingLayoutOffsetInBoundingRect(
+                                  leadingRect, self.contentView.bounds) +
+                              CGRectGetWidth(leadingRect) + kInterButtonMargin;
+
+  CGFloat width =
+      CGRectGetWidth(self.contentView.bounds) - (labelTrailing + labelLeading);
+
+  self.titleLabel.frame = LayoutRectGetRect(
+      LayoutRectMake(labelLeading, CGRectGetWidth(self.contentView.bounds), 0,
+                     width, CGRectGetHeight(self.contentView.bounds)));
+
+  if (bookmark_utils_ios::bookmarkMenuIsInSlideInPanel())
+    self.menuButton.hidden = NO;
+  else
+    self.menuButton.hidden = YES;
+}
+
++ (CGFloat)expectedContentViewHeight {
+  return kContentHeight;
+}
+
+- (void)setCancelTarget:(id)target action:(SEL)action {
+  [self.cancelButton addTarget:target
+                        action:action
+              forControlEvents:UIControlEventTouchUpInside];
+  DCHECK(!IsIPadIdiom());
+}
+
+- (void)setEditTarget:(id)target action:(SEL)action {
+  [self.editButton addTarget:target
+                      action:action
+            forControlEvents:UIControlEventTouchUpInside];
+}
+
+- (void)setMenuTarget:(id)target action:(SEL)action {
+  [self.menuButton addTarget:target
+                      action:action
+            forControlEvents:UIControlEventTouchUpInside];
+}
+
+- (void)setBackTarget:(id)target action:(SEL)action {
+  [self.backButton addTarget:target
+                      action:action
+            forControlEvents:UIControlEventTouchUpInside];
+}
+
+- (void)setTitle:(NSString*)title {
+  self.titleLabel.text = title;
+  [self setNeedsLayout];
+}
+
+- (void)showEditButtonWithAnimationDuration:(CGFloat)duration {
+  if (self.editButton.alpha == 1.0)
+    return;
+  if (duration == 0.0) {
+    self.editButton.alpha = 1.0;
+    [self setNeedsLayout];
+    return;
+  }
+  [UIView animateWithDuration:duration
+      delay:0
+      options:UIViewAnimationOptionBeginFromCurrentState
+      animations:^{
+        self.editButton.alpha = 1.0;
+      }
+      completion:^(BOOL finished) {
+        if (finished)
+          [self setNeedsLayout];
+      }];
+}
+
+- (void)hideEditButtonWithAnimationDuration:(CGFloat)duration {
+  if (self.editButton.alpha == 0.0)
+    return;
+  if (duration == 0.0) {
+    self.editButton.alpha = 0.0;
+    [self setNeedsLayout];
+    return;
+  }
+  [UIView animateWithDuration:duration
+      delay:0
+      options:UIViewAnimationOptionBeginFromCurrentState
+      animations:^{
+        self.editButton.alpha = 0.0;
+      }
+      completion:^(BOOL finished) {
+        if (finished) {
+          [self setNeedsLayout];
+        }
+      }];
+}
+
+- (void)updateEditButtonVisibility:(CGFloat)visibility {
+  self.editButton.alpha = visibility;
+}
+
+- (void)showMenuButtonInsteadOfBackButton:(CGFloat)duration {
+  if (self.menuButton.alpha == 1.0 && self.backButton.alpha == 0.0)
+    return;
+  if (duration == 0.0) {
+    self.menuButton.alpha = 1.0;
+    self.backButton.alpha = 0.0;
+    [self setNeedsLayout];
+    return;
+  }
+  [UIView animateWithDuration:duration
+      delay:0
+      options:UIViewAnimationOptionBeginFromCurrentState
+      animations:^{
+        self.menuButton.alpha = 1.0;
+        self.backButton.alpha = 0.0;
+      }
+      completion:^(BOOL finished) {
+        if (finished) {
+          [self setNeedsLayout];
+        }
+      }];
+}
+
+- (void)showBackButtonInsteadOfMenuButton:(CGFloat)duration {
+  if (self.menuButton.alpha == 0.0 && self.backButton.alpha == 1.0)
+    return;
+  if (duration == 0.0) {
+    self.menuButton.alpha = 0.0;
+    self.backButton.alpha = 1.0;
+    [self setNeedsLayout];
+    return;
+  }
+  [UIView animateWithDuration:duration
+      delay:0
+      options:UIViewAnimationOptionBeginFromCurrentState
+      animations:^{
+        self.menuButton.alpha = 0.0;
+        self.backButton.alpha = 1.0;
+      }
+      completion:^(BOOL finished) {
+        if (finished) {
+          [self setNeedsLayout];
+        }
+      }];
+}
+
+@end