ejmartin504

import Foundation
import WebKit

// See https://developer.apple.com/library/content/documentation/Swift/Conceptual/BuildingCocoaApps/AdoptingCocoaDesignPatterns.html for more details.
private var observerContext = 0

class StackableWebView: WKWebView {
    
    // Keep track of height which will change when the view is loaded.
    var webViewHeight: CGFloat = 0.0

catlan

# You need #import <objc/runtime.h>

#ifdef DEBUG

void pspdf_swizzle(Class c, SEL orig, SEL new) {
    Method origMethod = class_getInstanceMethod(c, orig);
    Method newMethod = class_getInstanceMethod(c, new);
    if(class_addMethod(c, orig, method_getImplementation(newMethod), method_getTypeEncoding(newMethod))) {
        class_replaceMethod(c, new, method_getImplementation(origMethod), method_getTypeEncoding(origMethod));
    }else {