CyteKit/ListController.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/ListController.h"
  28 #include "CyteKit/extern.h"
  29
  30 #include "iPhonePrivate.h"
  31 #include <Menes/ObjectHandle.h>
  32
  33 static CGFloat CYStatusBarHeight() {
  34     CGSize size([[UIApplication sharedApplication] statusBarFrame].size);
  35     return UIInterfaceOrientationIsPortrait([[UIApplication sharedApplication] statusBarOrientation]) ? size.height : size.width;
  36 }
  37
  38 @implementation CyteListController {
  39     _H<UITableView, 2> list_;
  40 }
  41
  42 - (bool) shouldYield {
  43     return false;
  44 }
  45
  46 - (void) deselectWithAnimation:(BOOL)animated {
  47     [list_ deselectRowAtIndexPath:[list_ indexPathForSelectedRow] animated:animated];
  48 }
  49
  50 - (void) resizeForKeyboardBounds:(CGRect)bounds duration:(NSTimeInterval)duration curve:(UIViewAnimationCurve)curve {
  51     CGRect base = [[self view] bounds];
  52     base.size.height -= bounds.size.height;
  53     base.origin = [list_ frame].origin;
  54
  55     [UIView beginAnimations:nil context:NULL];
  56     [UIView setAnimationBeginsFromCurrentState:YES];
  57     [UIView setAnimationCurve:curve];
  58     [UIView setAnimationDuration:duration];
  59     [list_ setFrame:base];
  60     [UIView commitAnimations];
  61 }
  62
  63 - (void) resizeForKeyboardBounds:(CGRect)bounds duration:(NSTimeInterval)duration {
  64     [self resizeForKeyboardBounds:bounds duration:duration curve:UIViewAnimationCurveLinear];
  65 }
  66
  67 - (void) resizeForKeyboardBounds:(CGRect)bounds {
  68     [self resizeForKeyboardBounds:bounds duration:0];
  69 }
  70
  71 - (void) getKeyboardCurve:(UIViewAnimationCurve *)curve duration:(NSTimeInterval *)duration forNotification:(NSNotification *)notification {
  72     if (&UIKeyboardAnimationCurveUserInfoKey == NULL)
  73         *curve = UIViewAnimationCurveEaseInOut;
  74     else
  75         [[[notification userInfo] objectForKey:UIKeyboardAnimationCurveUserInfoKey] getValue:curve];
  76
  77     if (&UIKeyboardAnimationDurationUserInfoKey == NULL)
  78         *duration = 0.3;
  79     else
  80         [[[notification userInfo] objectForKey:UIKeyboardAnimationDurationUserInfoKey] getValue:duration];
  81 }
  82
  83 - (void) keyboardWillShow:(NSNotification *)notification {
  84     CGRect bounds;
  85     CGPoint center;
  86     [[[notification userInfo] objectForKey:UIKeyboardBoundsUserInfoKey] getValue:&bounds];
  87     [[[notification userInfo] objectForKey:UIKeyboardCenterEndUserInfoKey] getValue:&center];
  88
  89     NSTimeInterval duration;
  90     UIViewAnimationCurve curve;
  91     [self getKeyboardCurve:&curve duration:&duration forNotification:notification];
  92
  93     CGRect kbframe = CGRectMake(Retina(center.x - bounds.size.width / 2), Retina(center.y - bounds.size.height / 2), bounds.size.width, bounds.size.height);
  94     UIViewController *base([self rootViewController]);
  95     CGRect viewframe = [[base view] convertRect:[list_ frame] fromView:[list_ superview]];
  96     CGRect intersection = CGRectIntersection(viewframe, kbframe);
  97
  98     if (kCFCoreFoundationVersionNumber < kCFCoreFoundationVersionNumber_iPhoneOS_3_0) // XXX: _UIApplicationLinkedOnOrAfter(4)
  99         intersection.size.height += CYStatusBarHeight();
 100
 101     [self resizeForKeyboardBounds:intersection duration:duration curve:curve];
 102 }
 103
 104 - (void) keyboardWillHide:(NSNotification *)notification {
 105     NSTimeInterval duration;
 106     UIViewAnimationCurve curve;
 107     [self getKeyboardCurve:&curve duration:&duration forNotification:notification];
 108
 109     [self resizeForKeyboardBounds:CGRectZero duration:duration curve:curve];
 110 }
 111
 112 - (void) viewWillAppear:(BOOL)animated {
 113     [super viewWillAppear:animated];
 114
 115     [self resizeForKeyboardBounds:CGRectZero];
 116     [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillShow:) name:UIKeyboardWillShowNotification object:nil];
 117     [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillHide:) name:UIKeyboardWillHideNotification object:nil];
 118 }
 119
 120 - (void) viewWillDisappear:(BOOL)animated {
 121     [super viewWillDisappear:animated];
 122
 123     [self resizeForKeyboardBounds:CGRectZero];
 124     [[NSNotificationCenter defaultCenter] removeObserver:self name:UIKeyboardWillShowNotification object:nil];
 125     [[NSNotificationCenter defaultCenter] removeObserver:self name:UIKeyboardWillHideNotification object:nil];
 126 }
 127
 128 - (void) viewDidAppear:(BOOL)animated {
 129     [super viewDidAppear:animated];
 130     [self deselectWithAnimation:animated];
 131 }
 132
 133 - (void) releaseSubviews {
 134     list_ = nil;
 135     [super releaseSubviews];
 136 }
 137
 138 - (CGFloat) rowHeight {
 139     return 0;
 140 }
 141
 142 - (void) updateHeight {
 143     [list_ setRowHeight:[self rowHeight]];
 144 }
 145
 146 - (void) loadView {
 147     UIView *view([[[UIView alloc] initWithFrame:[[UIScreen mainScreen] applicationFrame]] autorelease]);
 148     [view setAutoresizingMask:(UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight)];
 149     [self setView:view];
 150
 151     list_ = [[[UITableView alloc] initWithFrame:[[self view] bounds] style:UITableViewStylePlain] autorelease];
 152     [list_ setAutoresizingMask:(UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight)];
 153     [view addSubview:list_];
 154
 155     // XXX: is 20 the most optimal number here?
 156     [list_ setSectionIndexMinimumDisplayRowCount:20];
 157
 158     [list_ setDataSource:(id)self];
 159     [list_ setDelegate:(id)self];
 160
 161     [self updateHeight];
 162 }
 163
 164 - (void) _reloadData {
 165     [self updateHeight];
 166
 167     [list_ setDataSource:(id)self];
 168     [list_ reloadData];
 169 }
 170
 171 - (void) reloadData {
 172     [super reloadData];
 173
 174     if ([self shouldYield])
 175         [self performSelector:@selector(_reloadData) withObject:nil afterDelay:0];
 176     else
 177         [self _reloadData];
 178 }
 179
 180 - (void) resetCursor {
 181     [list_ scrollRectToVisible:CGRectMake(0, 0, 1, 1) animated:NO];
 182 }
 183
 184 - (void) clearData {
 185     [self updateHeight];
 186
 187     [list_ setDataSource:nil];
 188     [list_ reloadData];
 189
 190     [self resetCursor];
 191 }
 192
 193 @end