60760b8b3d
- Combined MPExpression and MPMutableExpression - Abstracted children of MPExpression into MPExpressionElement protocol - Abstracted most of MPExpressionLayout and MPFunctionLayout into common superclass MPLayout
59 lines
1.6 KiB
Objective-C
59 lines
1.6 KiB
Objective-C
//
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// MPFunctionLayout.m
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// MathPad
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//
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// Created by Kim Wittenburg on 07.08.14.
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// Copyright (c) 2014 Kim Wittenburg. All rights reserved.
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//
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#import "MPFunctionLayout.h"
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#import "MPFunction.h"
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#import "MPExpressionLayout.h"
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#import "MPSumFunction.h"
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#import "MPSumFunctionLayout.h"
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@implementation MPFunctionLayout
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#pragma mark Creation Methods
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+ (MPFunctionLayout *)functionLayoutForFunctionAtIndexPath:(NSIndexPath *)path
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parent:(MPExpressionLayout *)parent
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{
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MPFunction *function = [parent.expressionStorage elementAtIndexPath:path];
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Class class = [function class];
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if (class == [MPSumFunction class]) {
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return [[MPSumFunctionLayout alloc] initWithPath:path parent:parent];
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}
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return [[self alloc] initWithPath:path parent:parent];
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}
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#pragma mark Properties
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- (MPFunction *)function
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{
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return [self.expressionStorage elementAtIndexPath:self.path];
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}
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#pragma mark Cache Methods
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- (MPLayout *)childLayoutAtIndex:(NSUInteger)index
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{
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return [self cachableObjectForIndex:index generator:^id{
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NSIndexPath *childPath = [self.path indexPathByAddingIndex:index];
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MPExpressionLayout *layout = [[MPExpressionLayout alloc] initWithPath:childPath
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parent:self];
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return layout;
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}];
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}
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- (NSSize)sizeForChildAtIndex:(NSUInteger)index
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{
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MPLayout *childLayout = [self childLayoutAtIndex:index];
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return [childLayout size];
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}
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- (NSBezierPath *)generateBezierPath
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{
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return [NSBezierPath bezierPath];
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}
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@end
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