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+//
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+// FLEXBookmarksViewController.m
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+// FLEX
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+//
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+// Created by Tanner on 2/6/20.
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+// Copyright © 2020 Flipboard. All rights reserved.
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+//
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+
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+#import "FLEXBookmarksViewController.h"
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+#import "FLEXExplorerViewController.h"
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+#import "FLEXNavigationController.h"
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+#import "FLEXObjectExplorerFactory.h"
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+#import "FLEXBookmarkManager.h"
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+#import "UIBarButtonItem+FLEX.h"
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+#import "FLEXColor.h"
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+#import "FLEXUtility.h"
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+#import "FLEXRuntimeUtility.h"
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+#import "FLEXTableView.h"
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+
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+@interface FLEXBookmarksViewController ()
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+@property (nonatomic, copy) NSArray *bookmarks;
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+@property (nonatomic, readonly) FLEXExplorerViewController *corePresenter;
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+@end
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+
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+@implementation FLEXBookmarksViewController
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+
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+#pragma mark - Initialization
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+
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+- (id)init {
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+ return [self initWithStyle:UITableViewStylePlain];
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+}
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+
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+- (void)viewDidLoad {
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+ [super viewDidLoad];
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+
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+ self.navigationController.hidesBarsOnSwipe = NO;
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+ self.tableView.allowsMultipleSelectionDuringEditing = YES;
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+
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+ [self reloadData];
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+}
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+
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+- (void)viewWillAppear:(BOOL)animated {
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+ [super viewWillAppear:animated];
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+ [self setupDefaultBarItems];
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+}
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+
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+
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+#pragma mark - Private
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+
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+- (void)reloadData {
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+ // We assume the bookmarks aren't going to change out from under us, since
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+ // presenting any other tool via keyboard shortcuts should dismiss us first
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+ self.bookmarks = FLEXBookmarkManager.bookmarks;
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+ self.title = [NSString stringWithFormat:@"Bookmarks (%@)", @(self.bookmarks.count)];
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+}
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+
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+- (void)setupDefaultBarItems {
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+ self.navigationItem.rightBarButtonItem = FLEXBarButtonItemSystem(Done, self, @selector(dismissAnimated));
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+ self.toolbarItems = @[
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+ UIBarButtonItem.flex_flexibleSpace,
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+ FLEXBarButtonItemSystem(Edit, self, @selector(toggleEditing)),
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+ ];
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+
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+ // Disable editing if no bookmarks available
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+ self.toolbarItems.lastObject.enabled = self.bookmarks.count > 0;
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+}
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+
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+- (void)setupEditingBarItems {
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+ self.navigationItem.rightBarButtonItem = nil;
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+ self.toolbarItems = @[
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+ [UIBarButtonItem itemWithTitle:@"Close All" target:self action:@selector(closeAllButtonPressed)],
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+ UIBarButtonItem.flex_flexibleSpace,
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+ // We use a non-system done item because we change its title dynamically
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+ [UIBarButtonItem doneStyleitemWithTitle:@"Done" target:self action:@selector(toggleEditing)]
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+ ];
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+
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+ self.toolbarItems.firstObject.tintColor = FLEXColor.destructiveColor;
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+}
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+
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+- (FLEXExplorerViewController *)corePresenter {
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+ // We must be presented by a FLEXExplorerViewController, or presented
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+ // by another view controller that was presented by FLEXExplorerViewController
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+ FLEXExplorerViewController *presenter = (id)self.presentingViewController;
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+ presenter = (id)presenter.presentingViewController ?: presenter;
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+ presenter = (id)presenter.presentingViewController ?: presenter;
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+ NSAssert(
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+ [presenter isKindOfClass:[FLEXExplorerViewController class]],
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+ @"The bookmarks view controller expects to be presented by the explorer controller"
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+ );
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+ return presenter;
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+}
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+
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+#pragma mark Button Actions
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+
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+- (void)dismissAnimated {
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+ [self dismissAnimated:nil];
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+}
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+
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+- (void)dismissAnimated:(id)selectedObject {
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+ if (selectedObject) {
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+ UIViewController *explorer = [FLEXObjectExplorerFactory
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+ explorerViewControllerForObject:selectedObject
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+ ];
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+ if ([self.presentingViewController isKindOfClass:[FLEXNavigationController class]]) {
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+ // I am presented on an existing navigation stack, so
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+ // dismiss myself and push the bookmark there
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+ UINavigationController *presenter = (id)self.presentingViewController;
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+ [presenter dismissViewControllerAnimated:YES completion:^{
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+ [presenter pushViewController:explorer animated:YES];
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+ }];
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+ } else {
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+ // Dismiss myself and present explorer
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+ UIViewController *presenter = self.corePresenter;
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+ [presenter dismissViewControllerAnimated:YES completion:^{
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+ [presenter presentViewController:[FLEXNavigationController
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+ withRootViewController:explorer
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+ ] animated:YES completion:nil];
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+ }];
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+ }
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+ } else {
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+ // Just dismiss myself
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+ [self dismissViewControllerAnimated:YES completion:nil];
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+ }
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+}
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+
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+- (void)toggleEditing {
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+ NSArray<NSIndexPath *> *selected = self.tableView.indexPathsForSelectedRows;
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+ self.editing = !self.editing;
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+
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+ if (self.isEditing) {
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+ [self setupEditingBarItems];
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+ } else {
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+ [self setupDefaultBarItems];
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+
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+ // Get index set of bookmarks to close
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+ NSMutableIndexSet *indexes = [NSMutableIndexSet new];
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+ for (NSIndexPath *ip in selected) {
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+ [indexes addIndex:ip.row];
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+ }
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+
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+ if (selected.count) {
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+ // Close bookmarks and update data source
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+ [FLEXBookmarkManager.bookmarks removeObjectsAtIndexes:indexes];
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+ [self reloadData];
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+
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+ // Remove deleted rows
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+ [self.tableView deleteRowsAtIndexPaths:selected withRowAnimation:UITableViewRowAnimationAutomatic];
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+ }
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+ }
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+}
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+
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+- (void)closeAllButtonPressed {
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+ [FLEXAlert makeSheet:^(FLEXAlert *make) {
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+ NSInteger count = self.bookmarks.count;
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+ NSString *title = FLEXPluralFormatString(count, @"Remove %@ bookmarks", @"Remove %@ bookmark");
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+ make.button(title).destructiveStyle().handler(^(NSArray<NSString *> *strings) {
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+ [self closeAll];
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+ [self toggleEditing];
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+ });
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+ make.button(@"Cancel").cancelStyle();
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+ } showFrom:self];
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+}
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+
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+- (void)closeAll {
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+ NSInteger rowCount = self.bookmarks.count;
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+
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+ // Close bookmarks and update data source
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+ [FLEXBookmarkManager.bookmarks removeAllObjects];
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+ [self reloadData];
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+
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+ // Delete rows from table view
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+ NSArray<NSIndexPath *> *allRows = [NSArray flex_forEachUpTo:rowCount map:^id(NSUInteger row) {
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+ return [NSIndexPath indexPathForRow:row inSection:0];
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+ }];
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+ [self.tableView deleteRowsAtIndexPaths:allRows withRowAnimation:UITableViewRowAnimationAutomatic];
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+}
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+
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+
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+#pragma mark - Table View Data Source
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+
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+- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
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+ return self.bookmarks.count;
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+}
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+
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+- (UITableViewCell *)tableView:(FLEXTableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
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+ UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:kFLEXDetailCell forIndexPath:indexPath];
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+
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+ id object = self.bookmarks[indexPath.row];
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+ cell.textLabel.text = [FLEXRuntimeUtility safeDescriptionForObject:object];
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+ cell.detailTextLabel.text = [NSString stringWithFormat:@"%@ — %p", [object class], object];
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+
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+ return cell;
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+}
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+
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+
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+#pragma mark - Table View Delegate
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+
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+- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
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+ if (self.editing) {
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+ // Case: editing with multi-select
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+ self.toolbarItems.lastObject.title = @"Remove Selected";
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+ self.toolbarItems.lastObject.tintColor = FLEXColor.destructiveColor;
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+ } else {
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+ // Case: selected a bookmark
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+ [self dismissAnimated:self.bookmarks[indexPath.row]];
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+ }
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+}
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+
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+- (void)tableView:(UITableView *)tableView didDeselectRowAtIndexPath:(NSIndexPath *)indexPath {
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+ NSParameterAssert(self.editing);
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+
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+ if (tableView.indexPathsForSelectedRows.count == 0) {
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+ self.toolbarItems.lastObject.title = @"Done";
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+ self.toolbarItems.lastObject.tintColor = self.view.tintColor;
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+ }
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+}
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+
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+- (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath {
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+ return YES;
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+}
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+
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+- (void)tableView:(UITableView *)table
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+commitEditingStyle:(UITableViewCellEditingStyle)edit
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+forRowAtIndexPath:(NSIndexPath *)indexPath {
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+ NSParameterAssert(edit == UITableViewCellEditingStyleDelete);
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+
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+ // Remove bookmark and update data source
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+ [FLEXBookmarkManager.bookmarks removeObjectAtIndex:indexPath.row];
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+ [self reloadData];
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+
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+ // Delete row from table view
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+ [table deleteRowsAtIndexPaths:@[indexPath] withRowAnimation:UITableViewRowAnimationAutomatic];
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+}
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+
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+@end
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Tanner Bennett