Creates common super class for bookmark handset and tablet view controllers

ios/chrome/browser/ui/bookmarks/bookmark_home_view_controller.mm

+// Copyright 2017 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/bookmark_home_view_controller.h"
+
+#include "components/bookmarks/browser/bookmark_model.h"
+#include "ios/chrome/browser/bookmarks/bookmark_model_factory.h"
+#include "ios/chrome/browser/browser_state/chrome_browser_state.h"
+#import "ios/chrome/browser/ui/bookmarks/bars/bookmark_navigation_bar.h"
+#import "ios/chrome/browser/ui/bookmarks/bookmark_collection_view.h"
+#import "ios/chrome/browser/ui/bookmarks/bookmark_home_primary_view.h"
+#import "ios/chrome/browser/ui/bookmarks/bookmark_home_waiting_view.h"
+#import "ios/chrome/browser/ui/bookmarks/bookmark_menu_item.h"
+#import "ios/chrome/browser/ui/bookmarks/bookmark_menu_view.h"
+#import "ios/chrome/browser/ui/bookmarks/bookmark_panel_view.h"
+#import "ios/chrome/browser/ui/rtl_geometry.h"
+#import "ios/chrome/browser/ui/ui_util.h"
+#import "ios/chrome/browser/ui/uikit_ui_util.h"
+#import "ios/chrome/browser/ui/url_loader.h"
+
+using bookmarks::BookmarkNode;
+
+namespace {
+// The width of the bookmark menu, displaying the different sections.
+const CGFloat kMenuWidth = 264;
+}
+
+@interface BookmarkHomeViewController ()
+// Read / write declaration of read only properties.
+@property(nonatomic, assign) bookmarks::BookmarkModel* bookmarks;
+@property(nonatomic, assign) ios::ChromeBrowserState* browserState;
+@property(nonatomic, strong) BookmarkCollectionView* folderView;
+@property(nonatomic, weak) id<UrlLoader> loader;
+@property(nonatomic, strong) BookmarkMenuView* menuView;
+@property(nonatomic, strong) BookmarkNavigationBar* navigationBar;
+@property(nonatomic, strong) BookmarkPanelView* panelView;
+@property(nonatomic, strong) BookmarkMenuItem* primaryMenuItem;
+@end
+
+@implementation BookmarkHomeViewController
+
+@synthesize bookmarks = _bookmarks;
+@synthesize browserState = _browserState;
+@synthesize folderView = _folderView;
+@synthesize loader = _loader;
+@synthesize menuView = _menuView;
+@synthesize navigationBar = _navigationBar;
+@synthesize panelView = _panelView;
+@synthesize primaryMenuItem = _primaryMenuItem;
+@synthesize waitForModelView = _waitForModelView;
+@synthesize scrollToTop = _scrollToTop;
+
+#if !defined(__has_feature) || !__has_feature(objc_arc)
+#error "This file requires ARC support."
+#endif
+
+#pragma mark - Initializer
+
+- (instancetype)initWithLoader:(id<UrlLoader>)loader
+                  browserState:(ios::ChromeBrowserState*)browserState {
+  DCHECK(browserState);
+  self = [super initWithNibName:nil bundle:nil];
+  if (self) {
+    _browserState = browserState->GetOriginalChromeBrowserState();
+    _loader = loader;
+
+    _bookmarks = ios::BookmarkModelFactory::GetForBrowserState(browserState);
+  }
+  return self;
+}
+
+#pragma mark - UIViewController
+
+- (void)viewDidLoad {
+  [super viewDidLoad];
+  self.navigationBar = [[BookmarkNavigationBar alloc] initWithFrame:CGRectZero];
+}
+
+#pragma mark - Public
+
+- (void)loadBookmarkViews {
+  LayoutRect menuLayout =
+      LayoutRectMake(0, self.view.bounds.size.width, 0, self.menuWidth,
+                     self.view.bounds.size.height);
+
+  // Create menu view.
+  self.menuView = [[BookmarkMenuView alloc]
+      initWithBrowserState:_browserState
+                     frame:LayoutRectGetRect(menuLayout)];
+  self.menuView.autoresizingMask =
+      UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
+
+  // Create panel view.
+  self.panelView = [[BookmarkPanelView alloc] initWithFrame:CGRectZero
+                                              menuViewWidth:self.menuWidth];
+  self.panelView.autoresizingMask =
+      UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
+
+  // Create folder view.
+  BookmarkCollectionView* view =
+      [[BookmarkCollectionView alloc] initWithBrowserState:self.browserState
+                                                     frame:CGRectZero];
+  self.folderView = view;
+  [self.folderView setEditing:self.editing animated:NO];
+  self.folderView.autoresizingMask =
+      UIViewAutoresizingFlexibleHeight | UIViewAutoresizingFlexibleWidth;
+}
+
+- (void)updatePrimaryMenuItem:(BookmarkMenuItem*)menuItem {
+  DCHECK(menuItem.type == bookmarks::MenuItemFolder);
+  if ([self.primaryMenuItem isEqual:menuItem])
+    return;
+
+  // TODO(crbug.com/705339): Folder view is the only primary view now,
+  // hence we don't need to remove primary view anymore.
+  // Simplify this code that removes primary view and adds it back
+  // in subclasses, once the addition code moves here.
+  [[self primaryView] removeFromSuperview];
+  self.primaryMenuItem = menuItem;
+
+  [self.folderView resetFolder:self.primaryMenuItem.folder];
+  [self.folderView promoStateChangedAnimated:NO];
+
+  [[self primaryView] changeOrientation:GetInterfaceOrientation()];
+  [[self primaryView] setScrollsToTop:!self.scrollToTop];
+
+  [self.menuView updatePrimaryMenuItem:self.primaryMenuItem];
+}
+
+- (UIView<BookmarkHomePrimaryView>*)primaryView {
+  if (self.primaryMenuItem.type == bookmarks::MenuItemFolder)
+    return self.folderView;
+  return nil;
+}
+
+- (void)loadWaitingView {
+  DCHECK(!self.waitForModelView);
+  DCHECK(self.view);
+
+  // Present a waiting view.
+  BookmarkHomeWaitingView* waitingView =
+      [[BookmarkHomeWaitingView alloc] initWithFrame:self.view.bounds];
+  self.waitForModelView = waitingView;
+  [self.view addSubview:self.waitForModelView];
+  [self.waitForModelView startWaiting];
+}
+
+- (CGFloat)menuWidth {
+  return kMenuWidth;
+}
+
+@end