CyteKit/ViewController.mm

   1 /* Cydia - iPhone UIKit Front-End for Debian APT
   2  * Copyright (C) 2008-2012  Jay Freeman (saurik)
   3 */
   4
   5 /* Modified BSD License {{{ */
   6 /*
   7  *        Redistribution and use in source and binary
   8  * forms, with or without modification, are permitted
   9  * provided that the following conditions are met:
  10  *
  11  * 1. Redistributions of source code must retain the
  12  *    above copyright notice, this list of conditions
  13  *    and the following disclaimer.
  14  * 2. Redistributions in binary form must reproduce the
  15  *    above copyright notice, this list of conditions
  16  *    and the following disclaimer in the documentation
  17  *    and/or other materials provided with the
  18  *    distribution.
  19  * 3. The name of the author may not be used to endorse
  20  *    or promote products derived from this software
  21  *    without specific prior written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS''
  24  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
  25  * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  26  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  27  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE
  28  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  29  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  30  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  31  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  32  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
  33  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
  34  * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
  35  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
  36  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  37 */
  38 /* }}} */
  39
  40 #include "CyteKit/ViewController.h"
  41
  42 #include <Foundation/Foundation.h>
  43 #include <UIKit/UIKit.h>
  44
  45 extern bool IsWildcat_;
  46
  47 @implementation UIViewController (Cydia)
  48
  49 - (BOOL) hasLoaded {
  50     return YES;
  51 }
  52
  53 - (void) reloadData {
  54     [self view];
  55 }
  56
  57 - (void) unloadData {
  58     if (UIViewController *modal = [self modalViewController])
  59         [modal unloadData];
  60 }
  61
  62 - (UIViewController *) parentOrPresentingViewController {
  63     if (UIViewController *parent = [self parentViewController])
  64         return parent;
  65     if ([self respondsToSelector:@selector(presentingViewController)])
  66         return [self presentingViewController];
  67     return nil;
  68 }
  69
  70 @end
  71
  72 @implementation CyteViewController
  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 - (NSURL *) navigationURL {
 124     return nil;
 125 }
 126
 127 - (BOOL) shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)orientation {
 128     return IsWildcat_ || orientation == UIInterfaceOrientationPortrait;
 129 }
 130
 131 @end