blob: f1b5eded1cf261915cdece586b8b9aae4d7196fb [file] [log] [blame]
/*
* Copyright (C) 2016 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#import "WebViewController.h"
#import "TabViewController.h"
#import <WebKit/WKNavigation.h>
#import <WebKit/WKNavigationDelegate.h>
#import <WebKit/WKWebView.h>
#import <WebKit/WKWebViewConfiguration.h>
@implementation NSURL (BundleURLMethods)
+ (NSURL *)__bundleURLForFileURL:(NSURL *)url bundle:(NSBundle *)bundle
{
if (![url.scheme isEqualToString:@"file"])
return nil;
NSString *resourcePath = [bundle.resourcePath stringByAppendingString:@"/"];
if (![url.path hasPrefix:resourcePath])
return nil;
NSURLComponents *bundleComponents = [[NSURLComponents alloc] init];
bundleComponents.scheme = @"bundle";
bundleComponents.path = [url.path substringFromIndex:resourcePath.length];
return [bundleComponents.URL copy];
}
+ (NSURL *)__fileURLForBundleURL:(NSURL *)url bundle:(NSBundle *)bundle
{
if (![url.scheme isEqualToString:@"bundle"])
return nil;
return [bundle.resourceURL URLByAppendingPathComponent:url.path];
}
@end
@interface WebViewController () <WKNavigationDelegate> {
WKWebView *_currentWebView;
}
- (WKWebView *)createWebView;
- (void)removeWebView:(WKWebView *)webView;
- (void)setCurrentWebView:(WKWebView *)webView;
@end
void* EstimatedProgressContext = &EstimatedProgressContext;
void* TitleContext = &TitleContext;
void* URLContext = &URLContext;
@implementation WebViewController
- (void)viewDidLoad
{
[super viewDidLoad];
self.webViews = [[NSMutableArray alloc] initWithCapacity:1];
self.tabViewController = [self.storyboard instantiateViewControllerWithIdentifier:@"idTabViewController"];
self.tabViewController.parent = self;
self.tabViewController.modalPresentationStyle = UIModalPresentationPopover;
WKWebView *webView = [self createWebView];
[webView loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:@"https://webkit.org"]]];
[self setCurrentWebView:webView];
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
}
#pragma mark Actions
- (IBAction)reload:(id)sender
{
[self.currentWebView reload];
}
- (IBAction)goBack:(id)sender
{
[self.currentWebView goBack];
}
- (IBAction)goForward:(id)sender
{
[self.currentWebView goForward];
}
- (IBAction)urlFieldEditingBegan:(id)sender
{
self.urlField.selectedTextRange = [self.urlField textRangeFromPosition:self.urlField.beginningOfDocument toPosition:self.urlField.endOfDocument];
}
- (IBAction)navigateTo:(id)sender
{
[self.urlField resignFirstResponder];
NSString* requestedDestination = self.urlField.text;
if ([requestedDestination rangeOfString:@"^[\\p{Alphabetic}]+:" options:(NSRegularExpressionSearch | NSCaseInsensitiveSearch | NSAnchoredSearch)].location == NSNotFound)
requestedDestination = [@"http://" stringByAppendingString:requestedDestination];
NSURL* requestedURL = [NSURL URLWithString:requestedDestination];
if ([requestedURL.scheme isEqualToString:@"bundle"]) {
NSBundle *frameworkBundle = [NSBundle bundleForClass:[WebViewController class]];
requestedURL = [NSURL __fileURLForBundleURL:requestedURL bundle:frameworkBundle];
[self.currentWebView loadFileURL:requestedURL allowingReadAccessToURL:frameworkBundle.resourceURL];
}
[self.currentWebView loadRequest:[NSURLRequest requestWithURL:requestedURL]];
}
- (IBAction)showTabs:(id)sender
{
[self presentViewController:self.tabViewController animated:YES completion:nil];
self.tabViewController.popoverPresentationController.barButtonItem = self.tabButton;
}
#pragma mark Public methods
@dynamic currentWebView;
- (WKWebView *)currentWebView
{
return _currentWebView;
}
- (void)setCurrentWebView:(WKWebView *)webView
{
[_currentWebView removeObserver:self forKeyPath:@"estimatedProgress" context:EstimatedProgressContext];
[_currentWebView removeObserver:self forKeyPath:@"URL" context:URLContext];
[_currentWebView removeFromSuperview];
_currentWebView = webView;
[_currentWebView addObserver:self forKeyPath:@"estimatedProgress" options:(NSKeyValueObservingOptionInitial | NSKeyValueObservingOptionNew) context:EstimatedProgressContext];
[_currentWebView addObserver:self forKeyPath:@"URL" options:(NSKeyValueObservingOptionInitial | NSKeyValueObservingOptionNew) context:URLContext];
[self.webViewContainer addSubview:_currentWebView];
}
- (void)selectWebViewAtIndex:(NSUInteger)index
{
if (index >= self.webViews.count)
return;
self.currentWebView = self.webViews[index];
}
- (void)removeWebViewAtIndex:(NSUInteger)index
{
if (index >= self.webViews.count)
return;
[self removeWebView:self.webViews[index]];
}
- (void)addWebView
{
self.currentWebView = [self createWebView];
}
#pragma mark Internal methods
- (WKWebView *)createWebView
{
WKWebViewConfiguration *configuration = [[WKWebViewConfiguration alloc] init];
WKWebView *webView = [[WKWebView alloc] initWithFrame:self.webViewContainer.bounds configuration:configuration];
webView.navigationDelegate = self;
webView.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
[webView addObserver:self forKeyPath:@"title" options:NSKeyValueObservingOptionNew context:TitleContext];
[self.webViews addObject:webView];
[self.tabViewController.tableView reloadData];
return webView;
}
- (void)removeWebView:(WKWebView *)webView
{
NSUInteger index = [self.webViews indexOfObject:webView];
if (index != NSNotFound) {
[self.webViews[index] removeObserver:self forKeyPath:@"title" context:TitleContext];
[self.webViews removeObjectAtIndex:index];
} if (!self.webViews.count)
[self createWebView];
if (index >= self.webViews.count)
index = self.webViews.count - 1;
[self setCurrentWebView:self.webViews[index]];
[self.tabViewController.tableView reloadData];
}
#pragma mark Navigation Delegate
- (void)webView:(WKWebView *)webView didFailNavigation:(null_unspecified WKNavigation *)navigation withError:(NSError *)error
{
[webView loadHTMLString:[error description] baseURL:nil];
}
#pragma mark KVO
- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary *)change context:(void *)context
{
if (context == EstimatedProgressContext) {
float value = [[change valueForKey:NSKeyValueChangeNewKey] floatValue];
[self.progressView setProgress:value animated:YES];
} else if (context == URLContext) {
NSURL *newURLValue = [change valueForKey:NSKeyValueChangeNewKey];
if ([newURLValue isKindOfClass:[NSURL class]]) {
if ([newURLValue.scheme isEqualToString:@"file"])
newURLValue = [NSURL __bundleURLForFileURL:newURLValue bundle:[NSBundle bundleForClass:[WebViewController class]]];
self.urlField.text = [newURLValue absoluteString];
} else if ([newURLValue isKindOfClass:[NSNull class]])
self.urlField.text = @"";
} else if (context == TitleContext)
[self.tabViewController.tableView reloadData];
else
[super observeValueForKeyPath:keyPath ofObject:object change:change context:context];
}
@end