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//
// SVWebViewController.m
//
// Created by Sam Vermette on 08.11.10.
// Copyright 2010 Sam Vermette. All rights reserved.
//
// https://github.com/samvermette/SVWebViewController
#import "SVWebViewControllerActivityChrome.h"
#import "SVWebViewControllerActivitySafari.h"
#import "SVWebViewController.h"
@interface SVWebViewController () <UIWebViewDelegate>
@property (nonatomic, strong) UIBarButtonItem *backBarButtonItem;
@property (nonatomic, strong) UIBarButtonItem *forwardBarButtonItem;
@property (nonatomic, strong) UIBarButtonItem *refreshBarButtonItem;
@property (nonatomic, strong) UIBarButtonItem *stopBarButtonItem;
@property (nonatomic, strong) UIBarButtonItem *actionBarButtonItem;
@property (nonatomic, strong) UIWebView *webView;
@property (nonatomic, strong) NSURLRequest *request;
@end
@implementation SVWebViewController
#pragma mark - Initialization
- (void)dealloc {
[self.webView stopLoading];
[[UIApplication sharedApplication] setNetworkActivityIndicatorVisible:NO];
self.webView.delegate = nil;
self.delegate = nil;
}
- (instancetype)initWithAddress:(NSString *)urlString {
return [self initWithURL:[NSURL URLWithString:urlString]];
}
- (instancetype)initWithURL:(NSURL*)pageURL {
return [self initWithURLRequest:[NSURLRequest requestWithURL:pageURL]];
}
- (instancetype)initWithURLRequest:(NSURLRequest*)request {
self = [super init];
if (self) {
self.request = request;
}
return self;
}
- (void)loadRequest:(NSURLRequest*)request {
[self.webView loadRequest:request];
}
#pragma mark - View lifecycle
- (void)loadView {
self.view = self.webView;
[self loadRequest:self.request];
}
- (void)viewDidLoad {
[super viewDidLoad];
[self updateToolbarItems];
}
- (void)viewDidUnload {
[super viewDidUnload];
self.webView = nil;
_backBarButtonItem = nil;
_forwardBarButtonItem = nil;
_refreshBarButtonItem = nil;
_stopBarButtonItem = nil;
_actionBarButtonItem = nil;
}
- (void)viewWillAppear:(BOOL)animated {
NSAssert(self.navigationController, @"SVWebViewController needs to be contained in a UINavigationController. If you are presenting SVWebViewController modally, use SVModalWebViewController instead.");
[super viewWillAppear:animated];
if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPhone) {
[self.navigationController setToolbarHidden:NO animated:animated];
}
else if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad) {
[self.navigationController setToolbarHidden:YES animated:animated];
}
}
- (void)viewWillDisappear:(BOOL)animated {
[super viewWillDisappear:animated];
if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPhone) {
[self.navigationController setToolbarHidden:YES animated:animated];
}
}
- (void)viewDidDisappear:(BOOL)animated {
[super viewDidDisappear:animated];
[[UIApplication sharedApplication] setNetworkActivityIndicatorVisible:NO];
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation {
if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad)
return YES;
return toInterfaceOrientation != UIInterfaceOrientationPortraitUpsideDown;
}
#pragma mark - Getters
- (UIWebView*)webView {
if(!_webView) {
_webView = [[UIWebView alloc] initWithFrame:[UIScreen mainScreen].bounds];
_webView.delegate = self;
_webView.scalesPageToFit = YES;
}
return _webView;
}
- (UIBarButtonItem *)backBarButtonItem {
if (!_backBarButtonItem) {
_backBarButtonItem = [[UIBarButtonItem alloc] initWithImage:[UIImage imageNamed:@"SVWebViewController.bundle/SVWebViewControllerBack"]
style:UIBarButtonItemStylePlain
target:self
action:@selector(goBackTapped:)];
_backBarButtonItem.width = 18.0f;
}
return _backBarButtonItem;
}
- (UIBarButtonItem *)forwardBarButtonItem {
if (!_forwardBarButtonItem) {
_forwardBarButtonItem = [[UIBarButtonItem alloc] initWithImage:[UIImage imageNamed:@"SVWebViewController.bundle/SVWebViewControllerNext"]
style:UIBarButtonItemStylePlain
target:self
action:@selector(goForwardTapped:)];
_forwardBarButtonItem.width = 18.0f;
}
return _forwardBarButtonItem;
}
- (UIBarButtonItem *)refreshBarButtonItem {
if (!_refreshBarButtonItem) {
_refreshBarButtonItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemRefresh target:self action:@selector(reloadTapped:)];
}
return _refreshBarButtonItem;
}
- (UIBarButtonItem *)stopBarButtonItem {
if (!_stopBarButtonItem) {
_stopBarButtonItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemStop target:self action:@selector(stopTapped:)];
}
return _stopBarButtonItem;
}
- (UIBarButtonItem *)actionBarButtonItem {
if (!_actionBarButtonItem) {
_actionBarButtonItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemAction target:self action:@selector(actionButtonTapped:)];
}
return _actionBarButtonItem;
}
#pragma mark - Toolbar
- (void)updateToolbarItems {
self.backBarButtonItem.enabled = self.self.webView.canGoBack;
self.forwardBarButtonItem.enabled = self.self.webView.canGoForward;
UIBarButtonItem *refreshStopBarButtonItem = self.self.webView.isLoading ? self.stopBarButtonItem : self.refreshBarButtonItem;
UIBarButtonItem *fixedSpace = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFixedSpace target:nil action:nil];
UIBarButtonItem *flexibleSpace = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil];
if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad) {
CGFloat toolbarWidth = 250.0f;
fixedSpace.width = 35.0f;
NSArray *items = [NSArray arrayWithObjects:
fixedSpace,
refreshStopBarButtonItem,
fixedSpace,
self.backBarButtonItem,
fixedSpace,
self.forwardBarButtonItem,
fixedSpace,
self.actionBarButtonItem,
nil];
UIToolbar *toolbar = [[UIToolbar alloc] initWithFrame:CGRectMake(0.0f, 0.0f, toolbarWidth, 44.0f)];
toolbar.items = items;
toolbar.barStyle = self.navigationController.navigationBar.barStyle;
toolbar.tintColor = self.navigationController.navigationBar.tintColor;
self.navigationItem.rightBarButtonItems = items.reverseObjectEnumerator.allObjects;
}
else {
NSArray *items = [NSArray arrayWithObjects:
fixedSpace,
self.backBarButtonItem,
flexibleSpace,
self.forwardBarButtonItem,
flexibleSpace,
refreshStopBarButtonItem,
flexibleSpace,
self.actionBarButtonItem,
fixedSpace,
nil];
self.navigationController.toolbar.barStyle = self.navigationController.navigationBar.barStyle;
self.navigationController.toolbar.tintColor = self.navigationController.navigationBar.tintColor;
self.toolbarItems = items;
}
}
#pragma mark - UIWebViewDelegate
- (void)webViewDidStartLoad:(UIWebView *)webView {
[[UIApplication sharedApplication] setNetworkActivityIndicatorVisible:YES];
[self updateToolbarItems];
if ([self.delegate respondsToSelector:@selector(webViewDidStartLoad:)]) {
[self.delegate webViewDidStartLoad:webView];
}
}
- (void)webViewDidFinishLoad:(UIWebView *)webView {
[[UIApplication sharedApplication] setNetworkActivityIndicatorVisible:NO];
if (self.navigationItem.title == nil) {
self.navigationItem.title = [webView stringByEvaluatingJavaScriptFromString:@"document.title"];
}
[self updateToolbarItems];
if ([self.delegate respondsToSelector:@selector(webViewDidFinishLoad:)]) {
[self.delegate webViewDidFinishLoad:webView];
}
}
- (void)webView:(UIWebView *)webView didFailLoadWithError:(NSError *)error {
[[UIApplication sharedApplication] setNetworkActivityIndicatorVisible:NO];
[self updateToolbarItems];
if ([self.delegate respondsToSelector:@selector(webView:didFailLoadWithError:)]) {
[self.delegate webView:webView didFailLoadWithError:error];
}
}
- (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType {
if ([self.delegate respondsToSelector:@selector(webView:shouldStartLoadWithRequest:navigationType:)]) {
return [self.delegate webView:webView shouldStartLoadWithRequest:request navigationType:navigationType];
}
return YES;
}
#pragma mark - Target actions
- (void)goBackTapped:(UIBarButtonItem *)sender {
[self.webView goBack];
}
- (void)goForwardTapped:(UIBarButtonItem *)sender {
[self.webView goForward];
}
- (void)reloadTapped:(UIBarButtonItem *)sender {
[self.webView reload];
}
- (void)stopTapped:(UIBarButtonItem *)sender {
[self.webView stopLoading];
[self updateToolbarItems];
}
- (void)actionButtonTapped:(id)sender {
NSURL *url = self.webView.request.URL ? self.webView.request.URL : self.request.URL;
if (url != nil) {
NSArray *activities = @[[SVWebViewControllerActivitySafari new], [SVWebViewControllerActivityChrome new]];
if ([[url absoluteString] hasPrefix:@"file:///"]) {
UIDocumentInteractionController *dc = [UIDocumentInteractionController interactionControllerWithURL:url];
[dc presentOptionsMenuFromRect:self.view.bounds inView:self.view animated:YES];
} else {
UIActivityViewController *activityController = [[UIActivityViewController alloc] initWithActivityItems:@[url] applicationActivities:activities];
#ifdef __IPHONE_8_0
if (floor(NSFoundationVersionNumber) > NSFoundationVersionNumber_iOS_7_1 &&
UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad)
{
UIPopoverPresentationController *ctrl = activityController.popoverPresentationController;
ctrl.sourceView = self.view;
ctrl.barButtonItem = sender;
}
#endif
[self presentViewController:activityController animated:YES completion:nil];
}
}
}
- (void)doneButtonTapped:(id)sùender {
[self dismissViewControllerAnimated:YES completion:NULL];
}
@end
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