46 lines
1.1 KiB
Objective-C
46 lines
1.1 KiB
Objective-C
//
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// MPExpressionStorage.m
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// MathKit
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//
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// Created by Kim Wittenburg on 22.04.14.
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// Copyright (c) 2014 Kim Wittenburg. All rights reserved.
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//
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#import "MPExpressionStorage.h"
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#import "MPExpressionView.h"
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#import "MPExpressionLayout.h"
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#import "MPRangePath.h"
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@implementation MPExpressionStorage
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- (instancetype)initWithElements:(NSArray *)elements
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{
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self = [super initWithElements:elements];
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if (self) {
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_rootLayout = [[MPExpressionLayout alloc] initWithExpression:self parent:nil];
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}
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return self;
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}
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- (void)changedElementsInRangePath:(MPRangePath *)rangePath
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replacementLength:(NSUInteger)replacementLength
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{
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if (rangePath.location.length == 0) {
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return;
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}
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MPLayout *current = self.rootLayout;
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for (NSUInteger position = 0; position < rangePath.location.length-1; position++) {
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NSUInteger index = [rangePath.location indexAtPosition:position];
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current = [current childLayoutAtIndex:index];
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}
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[current clearCacheInRange:rangePath.rangeAtLastIndex
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replacementLength:replacementLength];
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}
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@end
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