mirror of
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313 lines
15 KiB
Objective-C
313 lines
15 KiB
Objective-C
/*
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Copyright 2016 OpenMarket Ltd
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Copyright 2017 Vector Creations Ltd
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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#import "TableViewCellWithCheckBoxes.h"
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// The space between 2 check boxes
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#define TABLEVIEWCELLWITHCHECKBOXES_MARGIN 8
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@interface TableViewCellWithCheckBoxes ()
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{
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NSMutableArray *checkBoxesArray;
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NSMutableArray *labelArray;
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}
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@end
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@implementation TableViewCellWithCheckBoxes
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- (void)setCheckBoxesNumber:(NSUInteger)checkBoxesNumber
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{
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if (_checkBoxesNumber == checkBoxesNumber)
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{
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return;
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}
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// Remove existing items
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NSArray *subviews = self.mainContainer.subviews;
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for (UIView *view in subviews)
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{
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[view removeFromSuperview];
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}
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_checkBoxesNumber = checkBoxesNumber;
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if (!_checkBoxesNumber)
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{
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// Nothing to do
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return;
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}
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checkBoxesArray = [NSMutableArray arrayWithCapacity:checkBoxesNumber];
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labelArray = [NSMutableArray arrayWithCapacity:checkBoxesNumber];
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CGFloat containerWidth = (self.mainContainer.frame.size.width - ((checkBoxesNumber - 1.0) * TABLEVIEWCELLWITHCHECKBOXES_MARGIN)) / checkBoxesNumber;
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UIView *previousContainer = nil;
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NSLayoutConstraint *topConstraint, *leftConstraint, *bottomConstraint;
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NSLayoutConstraint *widthConstraint, *heightConstraint, *centerYConstraint, *centerXConstraint;
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for (NSInteger index = 0; index < checkBoxesNumber; index++)
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{
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UIView *checkboxContainer = [[UIView alloc] initWithFrame:CGRectMake(index * (containerWidth + TABLEVIEWCELLWITHCHECKBOXES_MARGIN), 0, containerWidth, self.mainContainer.frame.size.height)];
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checkboxContainer.backgroundColor = [UIColor clearColor];
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[self.mainContainer addSubview:checkboxContainer];
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// Add container constraints
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checkboxContainer.translatesAutoresizingMaskIntoConstraints = NO;
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if (!previousContainer)
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{
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leftConstraint = [NSLayoutConstraint constraintWithItem:checkboxContainer
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attribute:NSLayoutAttributeLeading
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relatedBy:NSLayoutRelationEqual
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toItem:self.mainContainer
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attribute:NSLayoutAttributeLeading
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multiplier:1
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constant:0];
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widthConstraint = [NSLayoutConstraint constraintWithItem:checkboxContainer
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attribute:NSLayoutAttributeWidth
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relatedBy:NSLayoutRelationEqual
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toItem:self.mainContainer
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attribute:NSLayoutAttributeWidth
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multiplier:(1.0 / checkBoxesNumber)
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constant:(- ((checkBoxesNumber - 1.0) * TABLEVIEWCELLWITHCHECKBOXES_MARGIN) / checkBoxesNumber)];
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}
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else
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{
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leftConstraint = [NSLayoutConstraint constraintWithItem:checkboxContainer
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attribute:NSLayoutAttributeLeading
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relatedBy:NSLayoutRelationEqual
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toItem:previousContainer
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attribute:NSLayoutAttributeTrailing
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multiplier:1
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constant:TABLEVIEWCELLWITHCHECKBOXES_MARGIN];
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widthConstraint = [NSLayoutConstraint constraintWithItem:checkboxContainer
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attribute:NSLayoutAttributeWidth
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relatedBy:NSLayoutRelationEqual
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toItem:previousContainer
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attribute:NSLayoutAttributeWidth
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multiplier:1
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constant:0];
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}
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topConstraint = [NSLayoutConstraint constraintWithItem:checkboxContainer
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attribute:NSLayoutAttributeTop
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relatedBy:NSLayoutRelationEqual
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toItem:self.mainContainer
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attribute:NSLayoutAttributeTop
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multiplier:1
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constant:0];
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bottomConstraint = [NSLayoutConstraint constraintWithItem:checkboxContainer
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attribute:NSLayoutAttributeBottom
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relatedBy:NSLayoutRelationEqual
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toItem:self.mainContainer
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attribute:NSLayoutAttributeBottom
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multiplier:1
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constant:0];
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[NSLayoutConstraint activateConstraints:@[leftConstraint, widthConstraint, topConstraint, bottomConstraint]];
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previousContainer = checkboxContainer;
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// Add Checkbox and Label
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UIImageView *checkbox = [[UIImageView alloc] initWithFrame:CGRectMake(14, 11, 22, 22)];
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checkbox.translatesAutoresizingMaskIntoConstraints = NO;
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[checkboxContainer addSubview:checkbox];
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// Store the new check box unselected by default
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checkbox.image = [UIImage imageNamed:@"selection_untick"];
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checkbox.tag = 0;
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[checkBoxesArray addObject:checkbox];
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UILabel *theLabel = [[UILabel alloc] initWithFrame:CGRectMake(60, 0, containerWidth - 60, 31)];
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theLabel.translatesAutoresizingMaskIntoConstraints = NO;
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[checkboxContainer addSubview:theLabel];
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[labelArray addObject:theLabel];
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UIView *checkboxMask = [[UIView alloc] initWithFrame:CGRectMake(7, 4, 36, 36)];
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checkboxMask.translatesAutoresizingMaskIntoConstraints = NO;
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[checkboxContainer addSubview:checkboxMask];
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// Listen to check box tap
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checkboxMask.tag = index;
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checkboxMask.userInteractionEnabled = YES;
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UITapGestureRecognizer *tapGesture = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(onCheckBoxTap:)];
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[tapGesture setNumberOfTouchesRequired:1];
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[tapGesture setNumberOfTapsRequired:1];
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[tapGesture setDelegate:self];
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[checkboxMask addGestureRecognizer:tapGesture];
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// Add switch constraints
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leftConstraint = [NSLayoutConstraint constraintWithItem:checkbox
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attribute:NSLayoutAttributeLeading
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relatedBy:NSLayoutRelationEqual
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toItem:checkboxContainer
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attribute:NSLayoutAttributeLeading
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multiplier:1
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constant:14];
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widthConstraint = [NSLayoutConstraint constraintWithItem:checkbox
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attribute:NSLayoutAttributeWidth
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relatedBy:NSLayoutRelationEqual
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toItem:nil
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attribute:NSLayoutAttributeNotAnAttribute
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multiplier:1
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constant:22];
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centerYConstraint = [NSLayoutConstraint constraintWithItem:checkbox
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attribute:NSLayoutAttributeCenterY
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relatedBy:NSLayoutRelationEqual
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toItem:checkboxContainer
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attribute:NSLayoutAttributeCenterY
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multiplier:1
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constant:0.0f];
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[NSLayoutConstraint activateConstraints:@[leftConstraint, widthConstraint, centerYConstraint]];
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// Add Label constraints
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topConstraint = [NSLayoutConstraint constraintWithItem:theLabel
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attribute:NSLayoutAttributeTop
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relatedBy:NSLayoutRelationEqual
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toItem:checkboxContainer
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attribute:NSLayoutAttributeTop
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multiplier:1
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constant:0];
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leftConstraint = [NSLayoutConstraint constraintWithItem:theLabel
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attribute:NSLayoutAttributeLeading
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relatedBy:NSLayoutRelationEqual
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toItem:checkbox
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attribute:NSLayoutAttributeTrailing
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multiplier:1
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constant:9];
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centerYConstraint = [NSLayoutConstraint constraintWithItem:theLabel
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attribute:NSLayoutAttributeCenterY
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relatedBy:NSLayoutRelationEqual
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toItem:checkboxContainer
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attribute:NSLayoutAttributeCenterY
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multiplier:1
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constant:0.0f];
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[NSLayoutConstraint activateConstraints:@[topConstraint, leftConstraint, centerYConstraint]];
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// Add check box mask constraints
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widthConstraint = [NSLayoutConstraint constraintWithItem:checkboxMask
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attribute:NSLayoutAttributeWidth
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relatedBy:NSLayoutRelationEqual
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toItem:nil
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attribute:NSLayoutAttributeNotAnAttribute
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multiplier:1
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constant:36];
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heightConstraint = [NSLayoutConstraint constraintWithItem:checkboxMask
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attribute:NSLayoutAttributeHeight
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relatedBy:NSLayoutRelationEqual
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toItem:nil
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attribute:NSLayoutAttributeNotAnAttribute
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multiplier:1
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constant:36];
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centerXConstraint = [NSLayoutConstraint constraintWithItem:checkboxMask
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attribute:NSLayoutAttributeCenterX
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relatedBy:NSLayoutRelationEqual
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toItem:checkbox
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attribute:NSLayoutAttributeCenterX
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multiplier:1
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constant:0.0f];
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centerYConstraint = [NSLayoutConstraint constraintWithItem:checkboxMask
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attribute:NSLayoutAttributeCenterY
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relatedBy:NSLayoutRelationEqual
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toItem:checkbox
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attribute:NSLayoutAttributeCenterY
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multiplier:1
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constant:0.0f];
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[NSLayoutConstraint activateConstraints:@[widthConstraint, heightConstraint, centerXConstraint, centerYConstraint]];
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}
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}
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- (NSArray*)checkBoxes
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{
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return [NSArray arrayWithArray:checkBoxesArray];
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}
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- (NSArray*)labels
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{
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return [NSArray arrayWithArray:labelArray];
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}
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- (void)setCheckBoxValue:(BOOL)isSelected atIndex:(NSUInteger)index
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{
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if (index < checkBoxesArray.count)
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{
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UIImageView *checkBox = checkBoxesArray[index];
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if (isSelected && !checkBox.tag)
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{
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checkBox.image = [UIImage imageNamed:@"selection_tick"];
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checkBox.tag = 1;
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if (!self.allowsMultipleSelection)
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{
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// Unselect others check boxes
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for (NSUInteger k = 0; k < checkBoxesArray.count; k++)
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{
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if (k != index)
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{
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checkBox = checkBoxesArray[k];
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if (checkBox.tag)
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{
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checkBox.image = [UIImage imageNamed:@"selection_untick"];
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checkBox.tag = 0;
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}
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}
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}
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}
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}
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else if (!isSelected && checkBox.tag)
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{
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checkBox.image = [UIImage imageNamed:@"selection_untick"];
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checkBox.tag = 0;
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}
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}
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}
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- (BOOL)checkBoxValueAtIndex:(NSUInteger)index
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{
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if (index < checkBoxesArray.count)
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{
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UIImageView *checkBox = checkBoxesArray[index];
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return ((BOOL)checkBox.tag);
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}
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return NO;
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}
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#pragma mark - Action
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- (IBAction)onCheckBoxTap:(UITapGestureRecognizer*)sender
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{
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if (_delegate)
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{
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[_delegate tableViewCellWithCheckBoxes:self didTapOnCheckBoxAtIndex:sender.view.tag];
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}
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}
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@end
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