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506 lines
20 KiB
506 lines
20 KiB
//
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// FLEXFileBrowserTableViewController.m
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// Flipboard
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//
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// Created by Ryan Olson on 6/9/14.
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//
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//
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#import "FLEXFileBrowserTableViewController.h"
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#import "FLEXUtility.h"
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#import "FLEXWebViewController.h"
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#import "FLEXImagePreviewViewController.h"
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#import "FLEXTableListViewController.h"
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#import "FLEXObjectExplorerFactory.h"
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#import "FLEXObjectExplorerViewController.h"
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@interface FLEXFileBrowserTableViewCell : UITableViewCell
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@end
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@interface FLEXFileBrowserTableViewController () <FLEXFileBrowserSearchOperationDelegate>
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@property (nonatomic, copy) NSString *path;
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@property (nonatomic, copy) NSArray<NSString *> *childPaths;
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@property (nonatomic) NSArray<NSString *> *searchPaths;
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@property (nonatomic) NSNumber *recursiveSize;
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@property (nonatomic) NSNumber *searchPathsSize;
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@property (nonatomic) NSOperationQueue *operationQueue;
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@property (nonatomic) UIDocumentInteractionController *documentController;
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@end
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@implementation FLEXFileBrowserTableViewController
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+ (instancetype)path:(NSString *)path
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{
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return [[self alloc] initWithPath:path];
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}
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- (id)init
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{
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return [self initWithPath:NSHomeDirectory()];
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}
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- (id)initWithPath:(NSString *)path
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{
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self = [super init];
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if (self) {
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self.path = path;
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self.title = [path lastPathComponent];
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self.operationQueue = [NSOperationQueue new];
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//computing path size
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FLEXFileBrowserTableViewController *__weak weakSelf = self;
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dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
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NSFileManager *fileManager = NSFileManager.defaultManager;
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NSDictionary<NSString *, id> *attributes = [fileManager attributesOfItemAtPath:path error:NULL];
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uint64_t totalSize = [attributes fileSize];
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for (NSString *fileName in [fileManager enumeratorAtPath:path]) {
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attributes = [fileManager attributesOfItemAtPath:[path stringByAppendingPathComponent:fileName] error:NULL];
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totalSize += [attributes fileSize];
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// Bail if the interested view controller has gone away.
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if (!weakSelf) {
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return;
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}
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}
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dispatch_async(dispatch_get_main_queue(), ^{
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FLEXFileBrowserTableViewController *__strong strongSelf = weakSelf;
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strongSelf.recursiveSize = @(totalSize);
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[strongSelf.tableView reloadData];
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});
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});
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[self reloadCurrentPath];
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}
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return self;
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}
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#pragma mark - UIViewController
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- (void)viewDidLoad
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{
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[super viewDidLoad];
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self.showsSearchBar = YES;
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self.searchBarDebounceInterval = kFLEXDebounceForAsyncSearch;
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}
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#pragma mark - FLEXGlobalsEntry
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+ (NSString *)globalsEntryTitle:(FLEXGlobalsRow)row {
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switch (row) {
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case FLEXGlobalsRowBrowseBundle: return @"📁 Browse Bundle Directory";
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case FLEXGlobalsRowBrowseContainer: return @"📁 Browse Container Directory";
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default: return nil;
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}
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}
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+ (UIViewController *)globalsEntryViewController:(FLEXGlobalsRow)row {
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switch (row) {
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case FLEXGlobalsRowBrowseBundle: return [[self alloc] initWithPath:NSBundle.mainBundle.bundlePath];
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case FLEXGlobalsRowBrowseContainer: return [[self alloc] initWithPath:NSHomeDirectory()];
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default: return [self new];
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}
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}
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#pragma mark - FLEXFileBrowserSearchOperationDelegate
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- (void)fileBrowserSearchOperationResult:(NSArray<NSString *> *)searchResult size:(uint64_t)size
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{
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self.searchPaths = searchResult;
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self.searchPathsSize = @(size);
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[self.tableView reloadData];
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}
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#pragma mark - Search bar
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- (void)updateSearchResults:(NSString *)newText
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{
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[self reloadDisplayedPaths];
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}
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#pragma mark UISearchControllerDelegate
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- (void)willDismissSearchController:(UISearchController *)searchController
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{
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[self.operationQueue cancelAllOperations];
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[self reloadCurrentPath];
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[self.tableView reloadData];
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}
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#pragma mark - Table view data source
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- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
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{
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return 1;
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}
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- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
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{
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return self.searchController.isActive ? self.searchPaths.count : self.childPaths.count;
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}
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- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section
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{
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BOOL isSearchActive = self.searchController.isActive;
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NSNumber *currentSize = isSearchActive ? self.searchPathsSize : self.recursiveSize;
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NSArray<NSString *> *currentPaths = isSearchActive ? self.searchPaths : self.childPaths;
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NSString *sizeString = nil;
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if (!currentSize) {
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sizeString = @"Computing size…";
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} else {
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sizeString = [NSByteCountFormatter stringFromByteCount:[currentSize longLongValue] countStyle:NSByteCountFormatterCountStyleFile];
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}
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return [NSString stringWithFormat:@"%lu files (%@)", (unsigned long)currentPaths.count, sizeString];
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}
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- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
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{
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NSString *fullPath = [self filePathAtIndexPath:indexPath];
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NSDictionary<NSString *, id> *attributes = [NSFileManager.defaultManager attributesOfItemAtPath:fullPath error:NULL];
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BOOL isDirectory = [attributes.fileType isEqual:NSFileTypeDirectory];
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NSString *subtitle = nil;
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if (isDirectory) {
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NSUInteger count = [NSFileManager.defaultManager contentsOfDirectoryAtPath:fullPath error:NULL].count;
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subtitle = [NSString stringWithFormat:@"%lu item%@", (unsigned long)count, (count == 1 ? @"" : @"s")];
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} else {
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NSString *sizeString = [NSByteCountFormatter stringFromByteCount:attributes.fileSize countStyle:NSByteCountFormatterCountStyleFile];
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subtitle = [NSString stringWithFormat:@"%@ - %@", sizeString, attributes.fileModificationDate ?: @"Never modified"];
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}
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static NSString *textCellIdentifier = @"textCell";
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static NSString *imageCellIdentifier = @"imageCell";
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UITableViewCell *cell = nil;
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// Separate image and text only cells because otherwise the separator lines get out-of-whack on image cells reused with text only.
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UIImage *image = [UIImage imageWithContentsOfFile:fullPath];
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NSString *cellIdentifier = image ? imageCellIdentifier : textCellIdentifier;
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if (!cell) {
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cell = [[FLEXFileBrowserTableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:cellIdentifier];
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cell.textLabel.font = [FLEXUtility defaultTableViewCellLabelFont];
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cell.detailTextLabel.font = [FLEXUtility defaultTableViewCellLabelFont];
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cell.detailTextLabel.textColor = UIColor.grayColor;
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cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
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}
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NSString *cellTitle = [fullPath lastPathComponent];
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cell.textLabel.text = cellTitle;
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cell.detailTextLabel.text = subtitle;
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if (image) {
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cell.imageView.contentMode = UIViewContentModeScaleAspectFit;
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cell.imageView.image = image;
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}
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return cell;
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}
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- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
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{
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[self.tableView deselectRowAtIndexPath:indexPath animated:YES];
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NSString *fullPath = [self filePathAtIndexPath:indexPath];
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NSString *subpath = fullPath.lastPathComponent;
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NSString *pathExtension = subpath.pathExtension;
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BOOL isDirectory = NO;
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BOOL stillExists = [NSFileManager.defaultManager fileExistsAtPath:fullPath isDirectory:&isDirectory];
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UITableViewCell *cell = [self.tableView cellForRowAtIndexPath:indexPath];
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UIImage *image = cell.imageView.image;
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if (!stillExists) {
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[FLEXAlert showAlert:@"File Not Found" message:@"The file at the specified path no longer exists." from:self];
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[self reloadDisplayedPaths];
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return;
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}
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UIViewController *drillInViewController = nil;
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if (isDirectory) {
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drillInViewController = [[[self class] alloc] initWithPath:fullPath];
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} else if (image) {
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drillInViewController = [[FLEXImagePreviewViewController alloc] initWithImage:image];
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} else {
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NSData *fileData = [NSData dataWithContentsOfFile:fullPath];
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if (!fileData.length) {
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[FLEXAlert showAlert:@"Empty File" message:@"No data returned from the file." from:self];
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return;
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}
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// Special case keyed archives, json, and plists to get more readable data.
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NSString *prettyString = nil;
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if ([pathExtension isEqualToString:@"json"]) {
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prettyString = [FLEXUtility prettyJSONStringFromData:fileData];
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} else {
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// Regardless of file extension...
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id object = nil;
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@try {
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// Try to decode an archived object regardless of file extension
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object = [NSKeyedUnarchiver unarchiveObjectWithData:fileData];
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} @catch (NSException *e) { }
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// Try to decode other things instead
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object = object
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?: [NSPropertyListSerialization propertyListWithData:fileData
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options:0
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format:NULL
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error:NULL]
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?: [NSDictionary dictionaryWithContentsOfFile:fullPath]
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?: [NSArray arrayWithContentsOfFile:fullPath];
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if (object) {
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drillInViewController = [FLEXObjectExplorerFactory explorerViewControllerForObject:object];
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}
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}
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if (prettyString.length) {
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drillInViewController = [[FLEXWebViewController alloc] initWithText:prettyString];
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} else if ([FLEXWebViewController supportsPathExtension:pathExtension]) {
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drillInViewController = [[FLEXWebViewController alloc] initWithURL:[NSURL fileURLWithPath:fullPath]];
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} else if ([FLEXTableListViewController supportsExtension:pathExtension]) {
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drillInViewController = [[FLEXTableListViewController alloc] initWithPath:fullPath];
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}
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else if (!drillInViewController) {
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NSString *fileString = [NSString stringWithUTF8String:fileData.bytes];
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if (fileString.length) {
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drillInViewController = [[FLEXWebViewController alloc] initWithText:fileString];
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}
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}
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}
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if (drillInViewController) {
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drillInViewController.title = subpath.lastPathComponent;
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[self.navigationController pushViewController:drillInViewController animated:YES];
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} else {
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// Share the file otherwise
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[self openFileController:fullPath];
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}
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}
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- (BOOL)tableView:(UITableView *)tableView shouldShowMenuForRowAtIndexPath:(NSIndexPath *)indexPath
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{
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UIMenuItem *rename = [[UIMenuItem alloc] initWithTitle:@"Rename" action:@selector(fileBrowserRename:)];
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UIMenuItem *delete = [[UIMenuItem alloc] initWithTitle:@"Delete" action:@selector(fileBrowserDelete:)];
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UIMenuItem *copyPath = [[UIMenuItem alloc] initWithTitle:@"Copy Path" action:@selector(fileBrowserCopyPath:)];
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UIMenuItem *share = [[UIMenuItem alloc] initWithTitle:@"Share" action:@selector(fileBrowserShare:)];
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UIMenuController.sharedMenuController.menuItems = @[rename, delete, copyPath, share];
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return YES;
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}
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- (BOOL)tableView:(UITableView *)tableView canPerformAction:(SEL)action forRowAtIndexPath:(NSIndexPath *)indexPath withSender:(id)sender
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{
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return action == @selector(fileBrowserDelete:)
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|| action == @selector(fileBrowserRename:)
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|| action == @selector(fileBrowserCopyPath:)
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|| action == @selector(fileBrowserShare:);
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}
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- (void)tableView:(UITableView *)tableView performAction:(SEL)action forRowAtIndexPath:(NSIndexPath *)indexPath withSender:(id)sender
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{
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// Empty, but has to exist for the menu to show
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// The table view only calls this method for actions in the UIResponderStandardEditActions informal protocol.
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// Since our actions are outside of that protocol, we need to manually handle the action forwarding from the cells.
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}
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#if FLEX_AT_LEAST_IOS13_SDK
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- (UIContextMenuConfiguration *)tableView:(UITableView *)tableView contextMenuConfigurationForRowAtIndexPath:(NSIndexPath *)indexPath point:(CGPoint)point __IOS_AVAILABLE(13.0)
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{
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__weak typeof(self) weakSelf = self;
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return [UIContextMenuConfiguration configurationWithIdentifier:nil
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previewProvider:nil
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actionProvider:^UIMenu * _Nullable(NSArray<UIMenuElement *> * _Nonnull suggestedActions) {
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UITableViewCell * const cell = [tableView cellForRowAtIndexPath:indexPath];
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UIAction *rename = [UIAction actionWithTitle:@"Rename"
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image:nil
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identifier:@"Rename"
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handler:^(__kindof UIAction * _Nonnull action) {
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[weakSelf fileBrowserRename:cell];
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}];
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UIAction *delete = [UIAction actionWithTitle:@"Delete"
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image:nil
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identifier:@"Delete"
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handler:^(__kindof UIAction * _Nonnull action) {
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[weakSelf fileBrowserDelete:cell];
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}];
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UIAction *copyPath = [UIAction actionWithTitle:@"Copy Path"
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image:nil
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identifier:@"Copy Path"
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handler:^(__kindof UIAction * _Nonnull action) {
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[weakSelf fileBrowserCopyPath:cell];
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}];
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UIAction *share = [UIAction actionWithTitle:@"Share"
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image:nil
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identifier:@"Share"
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handler:^(__kindof UIAction * _Nonnull action) {
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[weakSelf fileBrowserShare:cell];
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}];
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return [UIMenu menuWithTitle:@"Manage File" image:nil identifier:@"Manage File" options:UIMenuOptionsDisplayInline children:@[rename, delete, copyPath, share]];
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}];
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}
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#endif
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- (void)openFileController:(NSString *)fullPath
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{
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UIDocumentInteractionController *controller = [UIDocumentInteractionController new];
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controller.URL = [NSURL fileURLWithPath:fullPath];
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[controller presentOptionsMenuFromRect:self.view.bounds inView:self.view animated:YES];
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self.documentController = controller;
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}
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- (void)fileBrowserRename:(UITableViewCell *)sender
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{
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NSIndexPath *indexPath = [self.tableView indexPathForCell:sender];
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NSString *fullPath = [self filePathAtIndexPath:indexPath];
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BOOL stillExists = [NSFileManager.defaultManager fileExistsAtPath:self.path isDirectory:NULL];
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if (stillExists) {
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[FLEXAlert makeAlert:^(FLEXAlert *make) {
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make.title([NSString stringWithFormat:@"Rename %@?", fullPath.lastPathComponent]);
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make.configuredTextField(^(UITextField *textField) {
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textField.placeholder = @"New file name";
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textField.text = fullPath.lastPathComponent;
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});
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make.button(@"Rename").handler(^(NSArray<NSString *> *strings) {
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NSString *newFileName = strings.firstObject;
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NSString *newPath = [fullPath.stringByDeletingLastPathComponent stringByAppendingPathComponent:newFileName];
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[NSFileManager.defaultManager moveItemAtPath:fullPath toPath:newPath error:NULL];
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[self reloadDisplayedPaths];
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});
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make.button(@"Cancel").cancelStyle();
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} showFrom:self];
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} else {
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[FLEXAlert showAlert:@"File Removed" message:@"The file at the specified path no longer exists." from:self];
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}
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}
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- (void)fileBrowserDelete:(UITableViewCell *)sender
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{
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NSIndexPath *indexPath = [self.tableView indexPathForCell:sender];
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NSString *fullPath = [self filePathAtIndexPath:indexPath];
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BOOL isDirectory = NO;
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BOOL stillExists = [NSFileManager.defaultManager fileExistsAtPath:fullPath isDirectory:&isDirectory];
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if (stillExists) {
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[FLEXAlert makeAlert:^(FLEXAlert *make) {
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make.title(@"Confirm Deletion");
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make.message([NSString stringWithFormat:
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@"The %@ '%@' will be deleted. This operation cannot be undone",
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(isDirectory ? @"directory" : @"file"), fullPath.lastPathComponent
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]);
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make.button(@"Delete").destructiveStyle().handler(^(NSArray<NSString *> *strings) {
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[NSFileManager.defaultManager removeItemAtPath:fullPath error:NULL];
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[self reloadDisplayedPaths];
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});
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make.button(@"Cancel").cancelStyle();
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} showFrom:self];
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} else {
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[FLEXAlert showAlert:@"File Removed" message:@"The file at the specified path no longer exists." from:self];
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}
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}
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- (void)fileBrowserCopyPath:(UITableViewCell *)sender
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{
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NSIndexPath *indexPath = [self.tableView indexPathForCell:sender];
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NSString *fullPath = [self filePathAtIndexPath:indexPath];
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UIPasteboard.generalPasteboard.string = fullPath;
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}
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- (void)fileBrowserShare:(UITableViewCell *)sender
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{
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NSIndexPath *indexPath = [self.tableView indexPathForCell:sender];
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NSString *pathString = [self filePathAtIndexPath:indexPath];
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NSURL *filePath = [NSURL fileURLWithPath:pathString];
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BOOL isDirectory = NO;
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[NSFileManager.defaultManager fileExistsAtPath:pathString isDirectory:&isDirectory];
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if (isDirectory) {
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// UIDocumentInteractionController for folders
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[self openFileController:pathString];
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} else {
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// Share sheet for files
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UIActivityViewController *shareSheet = [[UIActivityViewController alloc] initWithActivityItems:@[filePath] applicationActivities:nil];
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[self presentViewController:shareSheet animated:true completion:nil];
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}
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}
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- (void)reloadDisplayedPaths
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{
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if (self.searchController.isActive) {
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[self updateSearchPaths];
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} else {
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[self reloadCurrentPath];
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[self.tableView reloadData];
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}
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}
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- (void)reloadCurrentPath
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{
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NSMutableArray<NSString *> *childPaths = [NSMutableArray array];
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NSArray<NSString *> *subpaths = [NSFileManager.defaultManager contentsOfDirectoryAtPath:self.path error:NULL];
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for (NSString *subpath in subpaths) {
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[childPaths addObject:[self.path stringByAppendingPathComponent:subpath]];
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}
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self.childPaths = childPaths;
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}
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- (void)updateSearchPaths
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{
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self.searchPaths = nil;
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self.searchPathsSize = nil;
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//clear pre search request and start a new one
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[self.operationQueue cancelAllOperations];
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FLEXFileBrowserSearchOperation *newOperation = [[FLEXFileBrowserSearchOperation alloc] initWithPath:self.path searchString:self.searchText];
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newOperation.delegate = self;
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[self.operationQueue addOperation:newOperation];
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}
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- (NSString *)filePathAtIndexPath:(NSIndexPath *)indexPath
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{
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return self.searchController.isActive ? self.searchPaths[indexPath.row] : self.childPaths[indexPath.row];
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}
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@end
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@implementation FLEXFileBrowserTableViewCell
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- (void)forwardAction:(SEL)action withSender:(id)sender
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{
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id target = [self.nextResponder targetForAction:action withSender:sender];
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[UIApplication.sharedApplication sendAction:action to:target from:self forEvent:nil];
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}
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- (void)fileBrowserRename:(UIMenuController *)sender
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{
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[self forwardAction:_cmd withSender:sender];
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}
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- (void)fileBrowserDelete:(UIMenuController *)sender
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{
|
|
[self forwardAction:_cmd withSender:sender];
|
|
}
|
|
|
|
- (void)fileBrowserCopyPath:(UIMenuController *)sender
|
|
{
|
|
[self forwardAction:_cmd withSender:sender];
|
|
}
|
|
|
|
- (void)fileBrowserShare:(UIMenuController *)sender
|
|
{
|
|
[self forwardAction:_cmd withSender:sender];
|
|
}
|
|
|
|
@end
|