CyteKit/ViewController.mm

   1 /* Cydia - iPhone UIKit Front-End for Debian APT
   2  * Copyright (C) 2008-2015  Jay Freeman (saurik)
   3 */
   4
   5 /* GNU General Public License, Version 3 {{{ */
   6 /*
   7  * Cydia is free software: you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published
   9  * by the Free Software Foundation, either version 3 of the License,
  10  * or (at your option) any later version.
  11  *
  12  * Cydia is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with Cydia.  If not, see <http://www.gnu.org/licenses/>.
  19 **/
  20 /* }}} */
  21
  22 #include "CyteKit/UCPlatform.h"
  23
  24 #include <Foundation/Foundation.h>
  25 #include <UIKit/UIKit.h>
  26
  27 #include "CyteKit/ViewController.h"
  28
  29 #include "iPhonePrivate.h"
  30 #include <Menes/ObjectHandle.h>
  31
  32 @implementation UIViewController (Cydia)
  33
  34 - (BOOL) hasLoaded {
  35     return YES;
  36 }
  37
  38 - (void) reloadData {
  39     [self view];
  40 }
  41
  42 - (void) unloadData {
  43     if (UIViewController *modal = [self modalViewController])
  44         [modal unloadData];
  45 }
  46
  47 - (UIViewController *) parentOrPresentingViewController {
  48     if (UIViewController *parent = [self parentViewController])
  49         return parent;
  50     if ([self respondsToSelector:@selector(presentingViewController)])
  51         return [self presentingViewController];
  52     return nil;
  53 }
  54
  55 - (UIViewController *) rootViewController {
  56     UIViewController *base(self);
  57     while ([base parentOrPresentingViewController] != nil)
  58         base = [base parentOrPresentingViewController];
  59     return base;
  60 }
  61
  62 - (NSURL *) navigationURL {
  63     return nil;
  64 }
  65
  66 @end
  67
  68 @implementation CyteViewController {
  69     _transient id delegate_;
  70     BOOL loaded_;
  71     _H<UIColor> color_;
  72 }
  73
  74 - (void) setDelegate:(id)delegate {
  75     delegate_ = delegate;
  76 }
  77
  78 - (id) delegate {
  79     return delegate_;
  80 }
  81
  82 - (void) viewWillAppear:(BOOL)animated {
  83     [super viewWillAppear:animated];
  84
  85     // Load on first appearance. We don't need to set the loaded flag here
  86     // because it is set for us the first time -reloadData is called.
  87     if (![self hasLoaded])
  88         [self reloadData];
  89 }
  90
  91 - (BOOL) hasLoaded {
  92     return loaded_;
  93 }
  94
  95 - (void) releaseSubviews {
  96     loaded_ = NO;
  97 }
  98
  99 - (void) setView:(UIView *)view {
 100     // Nasty hack for 2.x-compatibility. In 3.0+, we can and
 101     // should just override -viewDidUnload instead.
 102     if (view == nil)
 103         [self releaseSubviews];
 104
 105     [super setView:view];
 106 }
 107
 108 - (void) reloadData {
 109     [super reloadData];
 110
 111     // This is called automatically on the first appearance of a controller,
 112     // or any other time it needs to reload the information shown. However (!),
 113     // this is not called by any tab bar or navigation controller's -reloadData
 114     // method unless this controller returns YES from -hadLoaded.
 115     loaded_ = YES;
 116 }
 117
 118 - (void) unloadData {
 119     loaded_ = NO;
 120     [super unloadData];
 121 }
 122
 123 - (void) setPageColor:(UIColor *)color {
 124     if (color == nil)
 125         color = [UIColor groupTableViewBackgroundColor];
 126     color_ = color;
 127 }
 128
 129 - (UIColor *) pageColor {
 130     return color_;
 131 }
 132
 133 #include "InterfaceOrientation.h"
 134
 135 @end