iOS: Finish support for key files

iOS/SelectKeyFileController.m

@@ -0,0 +1,95 @@
+/*
+ * Copyright (c) 2016, 2017, Jonathan Schleifer <js@heap.zone>
+ *
+ * https://heap.zone/git/scrypt-pwgen.git
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice is present in all copies.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#import "SelectKeyFileController.h"
+
+@implementation SelectKeyFileController
+- (void)viewDidLoad
+{
+	NSString *documentDirectory;
+	NSArray<NSString *> *keyFiles;
+	NSError *error;
+
+	[super viewDidLoad];
+
+	if ((documentDirectory = NSSearchPathForDirectoriesInDomains(
+	    NSDocumentDirectory, NSUserDomainMask, YES).firstObject) == nil) {
+		NSLog(@"Could not get key files: No documents directory");
+		[self.navigationController popViewControllerAnimated: YES];
+		return;
+	}
+
+	keyFiles = [NSFileManager.defaultManager
+	    contentsOfDirectoryAtPath: documentDirectory
+				error: &error];
+
+	if (keyFiles == nil) {
+		NSLog(@"Could not get key files: %@", error);
+		[self.navigationController popViewControllerAnimated: YES];
+		return;
+	}
+
+	_keyFiles = [[keyFiles sortedArrayUsingSelector:
+	    @selector(compare:)] retain];
+}
+
+- (void)dealloc
+{
+	[_keyFiles release];
+
+	[super dealloc];
+}
+
+-  (NSInteger)tableView: (UITableView *)tableView
+  numberOfRowsInSection: (NSInteger)section
+{
+	return _keyFiles.count + 1;
+}
+
+- (UITableViewCell *)tableView: (UITableView *)tableView
+	 cellForRowAtIndexPath: (NSIndexPath *)indexPath
+{
+	UITableViewCell *cell = [tableView
+	    dequeueReusableCellWithIdentifier: @"keyFile"];
+
+	if (cell == nil)
+		cell = [[[UITableViewCell alloc]
+		      initWithStyle: UITableViewCellStyleDefault
+		    reuseIdentifier: @"keyFile"] autorelease];
+
+	cell.textLabel.text =
+	    (indexPath.row > 0 ? _keyFiles[indexPath.row - 1] : @"None");
+
+	return cell;
+}
+
+-	  (void)tableView: (UITableView *)tableView
+  didSelectRowAtIndexPath: (NSIndexPath *)indexPath
+{
+	self.addSiteController.keyFile =
+	    (indexPath.row > 0 ? _keyFiles[indexPath.row - 1] : nil);
+	self.addSiteController.keyFileLabel.text =
+	    (indexPath.row > 0 ? _keyFiles[indexPath.row - 1] : @"None");
+
+	[self.navigationController popViewControllerAnimated: YES];
+}
+@end