amazedkoumei/sample_api.rb

## sample_api.rb
# -*- coding: utf-8 -*-
class SampleAPI

  def initialize(content, &block)
    @content = content
    fetch do
      block.call() if block
    end
  end

  def fetch(&block)
    q = @content
    url = "http://sample.com/api"
    query = BW::HTTP.get("#{url}?q=#{q}") do |res|
      if res.ok?
        # DispatchはNSURLConnectionDelegate内に書く！
        @queue = Dispatch::Queue.new(q)
        @queue.async{
          doSomething()
          block.call() if block
        }
      else
        errorMessage = "Error!!"
        block.call(errorMessage) if block
      end
    end
    @connection = query.connection
  end

  def doSomething()
    # 重い処理
  end

  def close()
    # 閉じる！！
    @connection.cancel() if !@connection.nil?
    # 閉じる！！
    @queue.suspend! if !@queue.nil?
  end
end

## sample_view_controller.rb
# -*- coding: utf-8 -*-
class SampleViewController < UIViewController

  def viewDidLoad()
    super
    content = content()
    @webView = UIWebView.new.tap do |v|
      v.frame = self.view.bounds
      v.delegate = self
      view.addSubview(v)
      v.loadHTMLString(content, baseURL:nil)
    end
  end

  def viewDidDisappear(animated)
    super
    # 閉じる！
    # 12/12/18 deallocに移動
    # @webView.stopLoading() if !@webView.nil?

    # 閉じる！
    if !@sampleAPIList.nil?
      @sampleAPIList.each do |s|
        s.close() if !s.nil?
      end
    end
  end

  def dealloc()
    super
    # 12/12/18 追記
    # 開放前にdelegateに明示的にnilを設定すればOK
    @webView.delegate = nil
  end

  def webViewDidFinishLoad(webView)
    p "webViewDidFinishLoad"
    # コンテンツにiframeがあると2回呼ばれるので1回しか実行したくない処理は要工夫！
    if @contentText.nil?
      javaScript = "$('body').text()"
      @contentText= webView.stringByEvaluatingJavaScriptFromString(javaScript)
      @contentList = @contentText.strip().split("\n")
      @contentList.delete("")

      # ここで非同期処理実行
      @sampleAPIList = []
      @contentList.each do |c|
        @sampleAPIList<<SampleAPI.new(c) do |error|
          if error.nil?
            p "OK"
          else
            p error
          end
        end
      end
    end
  end

  def content()
    preHtml = <<-EOS
<!doctype html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta charset="UTF-8" />
<title>SampleContent</title>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.8.2/jquery.min.js"></script>
</head>
<body>

aaa<br />
bbb<br />
ccc<br />
ddd

<iframe width="560" height="315" src="http://www.youtube.com/embed/kjLO6utw_Tc" frameborder="0" allowfullscreen></iframe>
</body>
</html>
      EOS
  end
end
	# -- coding: utf-8 --
	class SampleAPI

	def initialize(content, &block)
	@content = content
	fetch do
	block.call() if block
	end
	end

	def fetch(&block)
	q = @content
	url = "http://sample.com/api"
	query = BW::HTTP.get("#{url}?q=#{q}") do \|res\|
	if res.ok?
	# DispatchはNSURLConnectionDelegate内に書く！
	@queue = Dispatch::Queue.new(q)
	@queue.async{
	doSomething()
	block.call() if block
	}
	else
	errorMessage = "Error!!"
	block.call(errorMessage) if block
	end
	end
	@connection = query.connection
	end

	def doSomething()
	# 重い処理
	end

	def close()
	# 閉じる！！
	@connection.cancel() if !@connection.nil?
	# 閉じる！！
	@queue.suspend! if !@queue.nil?
	end
	end
	# -- coding: utf-8 --
	class SampleViewController < UIViewController

	def viewDidLoad()
	super
	content = content()
	@webView = UIWebView.new.tap do \|v\|
	v.frame = self.view.bounds
	v.delegate = self
	view.addSubview(v)
	v.loadHTMLString(content, baseURL:nil)
	end
	end

	def viewDidDisappear(animated)
	super
	# 閉じる！
	# 12/12/18 deallocに移動
	# @webView.stopLoading() if !@webView.nil?

	# 閉じる！
	if !@sampleAPIList.nil?
	@sampleAPIList.each do \|s\|
	s.close() if !s.nil?
	end
	end
	end

	def dealloc()
	super
	# 12/12/18 追記
	# 開放前にdelegateに明示的にnilを設定すればOK
	@webView.delegate = nil
	end

	def webViewDidFinishLoad(webView)
	p "webViewDidFinishLoad"
	# コンテンツにiframeがあると2回呼ばれるので1回しか実行したくない処理は要工夫！
	if @contentText.nil?
	javaScript = "$('body').text()"
	@contentText= webView.stringByEvaluatingJavaScriptFromString(javaScript)
	@contentList = @contentText.strip().split("\n")
	@contentList.delete("")

	# ここで非同期処理実行
	@sampleAPIList = []
	@contentList.each do \|c\|
	@sampleAPIList<<SampleAPI.new(c) do \|error\|
	if error.nil?
	p "OK"
	else
	p error
	end
	end
	end
	end
	end

	def content()
	preHtml = <<-EOS
	<!doctype html>
	<html xmlns="http://www.w3.org/1999/xhtml">
	<head>
	<meta charset="UTF-8" />
	<title>SampleContent</title>
	<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.8.2/jquery.min.js"></script>
	</head>
	<body>

	aaa<br />
	bbb<br />
	ccc<br />
	ddd

	<iframe width="560" height="315" src="http://www.youtube.com/embed/kjLO6utw_Tc" frameborder="0" allowfullscreen></iframe>
	</body>
	</html>
	EOS
	end
	end