libr-ios/librx/WebViewController.swift

//
//  WebViewController.swift
//  librx
//
//  Created by Yunlong Zheng on 15/8/20.
//  Copyright (c) 2015年 librx. All rights reserved.
//

import UIKit

class WebViewController: UIViewController {
    
    @IBOutlet weak var webView: UIWebView!
    
    @IBOutlet weak var likeButton: UIBarButtonItem!
    @IBOutlet weak var activeIndicatorView: UIActivityIndicatorView!
    
    @IBOutlet weak var bookmarkButton: UIBarButtonItem!
    private var hasFinishLoading = false
    private var isLikedPost = false
    private var isBookMarkPost = false

    var post : Post!
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        self.activeIndicatorView.hidden = false
        self.activeIndicatorView.startAnimating()
        
        loadPostContent(post)
        
        webView.delegate = self
        webView.scrollView.bounces = false;
        
        self.title = self.post.title
        
    }
    
    override func viewDidAppear(animated: Bool) {
        super.viewDidAppear(animated)
        LibrxService.viewPost(post.id)
        
        if self.isLikedPost {
            self.likeButton.image = UIImage(named: "Like")
        }else {
            self.likeButton.image = UIImage(named: "LikeEmpty")
        }
        
        if self.isBookMarkPost {
            self.bookmarkButton.image = UIImage(named: "BookmarkFilled")
        }else {
            self.bookmarkButton.image = UIImage(named: "Bookmark")
        }
        
    }
    
    override func didReceiveMemoryWarning() {
        if webView.loading {
            webView.stopLoading()
        }
        
        let alert = UIAlertController(title: "Stopped Loading",
            message: "This site is memory intensive and may cause a crash. Please use a browser instead.",
            preferredStyle: UIAlertControllerStyle.Alert)
        
        alert.addAction(UIAlertAction(title: "Dismiss",
            style: UIAlertActionStyle.Cancel, handler: { (action) -> Void in
        }))
        
        alert.addAction(UIAlertAction(title: "Open in Safari",
            style: UIAlertActionStyle.Default, handler: { (action) -> Void in
                UIApplication.sharedApplication().openURL(NSURL(string:self.post.url)!)
                return
        }))
        
        self.presentViewController(alert, animated: true, completion: nil)
    }
    
    override func preferredStatusBarStyle() -> UIStatusBarStyle {
        return UIStatusBarStyle.LightContent;
    }

    @IBAction func toggleLikePostAction(sender: AnyObject) {
        
        if self.isLikedPost {
            LibrxService.unlikePost(self.post.id)
            self.likeButton.image = UIImage(named: "LikeEmpty")
            self.isLikedPost = false
        }else {
            LibrxService.likePost(self.post.id)
            self.likeButton.image = UIImage(named: "Like")
            self.isLikedPost = true
        }
        
    }
    
    @IBAction func toggleBookMarkPostAction(sender: AnyObject) {
    
        if self.isBookMarkPost {
            LibrxService.unBookmarkPost(self.post.id)
            self.bookmarkButton.image = UIImage(named: "Bookmark")
            self.isBookMarkPost = false
        }else {
            LibrxService.bookmarkPost(self.post.id)
            self.bookmarkButton.image = UIImage(named: "BookmarkFilled")
            self.isBookMarkPost = true
        }
        
    }
    
    
    @IBAction func dismiss(sender: AnyObject) {
        
        if let _ = self.navigationController {
            self.navigationController?.popViewControllerAnimated(true)
            return
        }
        self.dismissViewControllerAnimated(true, completion: nil)
        
    }
    
    @IBAction func shareToWeChat(sender: AnyObject) {
        self.shareToSocialMedia(self.post)
    }
    
    func loadPostContent(post:Post) {
        
        LibrxService.postDetails(post.id) { [weak self](post) -> () in
            if let that = self {
                // mark: load static html content when post is good format
                if post.goodFormat {
                
                        that.webView.loadHTMLString(post.getFormatContent(), baseURL: nil)
                
                } else{
                    that.webView.loadRequest(NSURLRequest(URL:  NSURL(string:post.url)!))
                }

                that.isLikedPost = post.liked
                that.isBookMarkPost = post.bookmarked
            }
            
        }
        
    }
    
}

extension WebViewController: UMSocialUIDelegate{

    func shareToSocialMedia(post: Post) {
    
        UMSocialData.defaultData().urlResource.setResourceType(UMSocialUrlResourceTypeImage, url: post.thumbnail)
        
        UMSocialData.defaultData().extConfig.wechatSessionData.url = post.url
        UMSocialData.defaultData().extConfig.wechatSessionData.title = post.title
        UMSocialData.defaultData().extConfig.wechatSessionData.shareText = post.summary
        
        UMSocialData.defaultData().extConfig.wechatTimelineData.url = post.url
        UMSocialData.defaultData().extConfig.wechatTimelineData.title = post.title
        UMSocialData.defaultData().extConfig.wechatTimelineData.shareText = post.summary
        
        UMSocialData.defaultData().extConfig.wechatFavoriteData.url = post.url
        UMSocialData.defaultData().extConfig.wechatFavoriteData.title = post.title
        UMSocialData.defaultData().extConfig.wechatFavoriteData.shareText = post.summary
        
        UMSocialSnsService.presentSnsIconSheetView(self, appKey: UMSocialConstants.appKey, shareText: post.title, shareImage: UIImage(named: "AppIcon"),
            shareToSnsNames: [UMShareToSina,
                UMShareToWechatTimeline,
                UMShareToWechatSession,
                UMShareToEmail,
                UMShareToSms
            ],
            delegate:self)
    }
    
    func didFinishGetUMSocialDataInViewController(response: UMSocialResponseEntity!) {
        
        if(response.responseCode == UMSResponseCodeSuccess)
        {
            //得到分享到的微博平台名
            NSLog("share to sns name is \(response.data)")
        }
        
    }
    
}

extension WebViewController: UIWebViewDelegate{

    func webViewDidFinishLoad(webView: UIWebView) {
        self.activeIndicatorView.hidden = true
    }
    
    func webViewDidStartLoad(webView: UIWebView) {
        hasFinishLoading = false
        updateProgress()
    }
    
    func updateProgress() {
        
    }
    
}