{"id":3585,"date":"2012-07-16T00:54:38","date_gmt":"2012-07-15T15:54:38","guid":{"rendered":"http:\/\/www.moonmile.net\/blog\/archives\/3585"},"modified":"2012-07-16T00:55:18","modified_gmt":"2012-07-15T15:55:18","slug":"c-%e3%81%a7-observablecollection-%e3%82%92%e5%ae%9f%e8%a3%85%e3%81%99%e3%82%8b","status":"publish","type":"post","link":"http:\/\/www.moonmile.net\/blog\/archives\/3585","title":{"rendered":"C++ \u3067 ObservableCollection \u3092\u5b9f\u88c5\u3059\u308b"},"content":{"rendered":"<p>\nObservableCollection(T) \u30af\u30e9\u30b9 (System.Collections.ObjectModel)<br \/>\n<a href=\"http:\/\/msdn.microsoft.com\/ja-jp\/library\/ms668604.aspx\">http:\/\/msdn.microsoft.com\/ja-jp\/library\/ms668604.aspx<\/a><br \/>\nSkeleton of GOF&#8217;s Design Pattern<br \/>\n<a href=\"http:\/\/www002.upp.so-net.ne.jp\/ys_oota\/mdp\/Observer\/index.htm\">http:\/\/www002.upp.so-net.ne.jp\/ys_oota\/mdp\/Observer\/index.htm<\/a>\n<\/p>\n<p>\n2\u3064\u306eView\u306e\u5909\u66f4\u304c\u3001\u540c\u6642\u306b\u884c\u308f\u308c\u308b\u3068\u304d\u306eModel\u306e\u6319\u52d5\u3092\u8003\u5bdf | Moonmile Solutions Blog<br \/>\n<a href=\"http:\/\/www.moonmile.net\/blog\/archives\/3575\">http:\/\/www.moonmile.net\/blog\/archives\/3575<\/a>\n<\/p>\n<p>\n\u3067\u3001__event\/__hook \u3067\u5b9f\u88c5\u3057\u3088\u3046\u3068\u601d\u3063\u3066\u3044\u305f\u306e\u3067\u3059\u304c\u3001\u57fa\u672c\u306b\u5e30\u3063\u3066 Observer \u30d1\u30bf\u30fc\u30f3\u3092\u8abf\u3079\u3066\u307f\u308b\u3068\u3001\u3042\u3042\u3001\u3053\u308c\u3067\u3044\u3044\u3058\u3083\u3093\u3068\u3044\u3046\u3053\u3068\u306b\u3057\u307e\u3057\u305f\u3002\u8eca\u8f2a\u306e\u518d\u767a\u660e\u3063\u3066\u3084\u3064\u3067\u3059\u3002\n<\/p>\n<p><a href='http:\/\/www.moonmile.net\/blog\/wp-content\/uploads\/2012\/07\/wpid-dworkblogimage20120716_01org.jpg'><img border='0' src='http:\/\/www.moonmile.net\/blog\/wp-content\/uploads\/2012\/07\/wpid-dworkblogimage20120716_01thum.jpg'\/><\/a><\/p>\n<ul>\n<li>View \u3068 Data\/Model \u3092\u72ec\u7acb\u3055\u305b\u3088\u3046<\/li>\n<li>Model \u306e\u5909\u66f4\u3092\u8907\u6570\u306e View \u306b\u4f1d\u3048\u308b<\/li>\n<\/ul>\n<p>\n\u3068\u3044\u3046\u70b9\u3082\u5f93\u6765\u306e Observer \u30d1\u30bf\u30fc\u30f3\u3067 ok \u3067\u3059\u3002<br \/>\n\u3053\u306e\u3042\u305f\u308a\u3001notify \u3067\u6e21\u3059\u6642\u306b\u3001notify( Model * ) \u306e\u3088\u3046\u306b Model \u306e\u578b\u3092\u6e21\u3057\u3066\u3057\u307e\u3046\u3068 Model \u306e\u578b\u306b\u7e1b\u3089\u308c\u308b\uff08\u5f53\u305f\u308a\u524d\uff09\u3063\u3066\u3053\u3068\u306b\u306a\u308b\u306e\u3067\u3059\u304c\u3001\u3053\u3053\u306f object \u578b\/void *\u3067\u5341\u5206\u306a\u8a33\u3067\u3059\u3002\u53d7\u3051\u308b\u5074\u3067\u3001(Model*)object \u3068\u3057\u3066\u30ad\u30e3\u30b9\u30c8\u3092\u3059\u308c\u3070\u826f\u3044\u308f\u3051\u3067&#8230;\u306a\u308b\u307b\u3069\u3002\n<\/p>\n<p>\n\u8907\u6570\u306e view \u3078\u306e\u901a\u77e5\u306b\u5bfe\u3057\u3066\u306f\u3001addObjserver\/revemoOPbserver\u3092\u5b9f\u88c5\u3057\u3066\u901a\u77e5\u5148\u306e Observable \u3092\u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u3057\u3066\u304a\u304d\u307e\u3059\u3002\u5143\u3005\u306e Observer \u30d1\u30bf\u30fc\u30f3\u304c\u3053\u3046\u306a\u306e\u3067\u3001\u79c1\u306e\u898b\u843d\u3068\u3057\u3067\u3059\u306d\u3002\n<\/p>\n<p>\n\u3067\u3001GridView \u3068 \u30c7\u30fc\u30bf\u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u3068\u306e\u9023\u643a\u3001\u3044\u308f\u3086\u308b\u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u306e\u30c7\u30fc\u30bf\u30d0\u30a4\u30f3\u30c9\u306b\u95a2\u3057\u3066\u306f\u3001ObservableCollection \u304c\u826f\u304f\u4f7f\u308f\u308c\u308b\u306e\u3067\u3001\u3053\u308c\u3092 C++ \u3067\u5b9f\u88c5\u3057\u3066\u307f\u307e\u3059\u3002\n<\/p>\n<pre class=\"brush: csharp; title: ; notranslate\" title=\"\">\n\/\/ Doc-View \u306b\u76f4\u3059\u66ab\u5b9a Observable \u30d1\u30bf\u30fc\u30f3\n#include &lt;string&gt;\n#include &lt;iostream&gt;\n#include &lt;list&gt;\n#include &lt;algorithm&gt;\n\nusing namespace std;\n\nclass IObserver {\npublic:\n\t\/\/ Action\n\tenum Action {\n\t\tAdd,\n\t\tRemove,\n\t\tReplace,\n\t\tMove,\n\t\tReset,\n\t};\n\tvirtual void CollectionChanged( void *ob, Action mode ) {}\n\tvirtual void PropertyChanged( void *ob, const char *propName ) {}\n};\n\nclass IObservable {\nprotected:\n\tstd::list&lt;IObserver*&gt; _lst;\npublic:\n\tvoid addObserver( IObserver *ob ) {\n\t\t_lst.push_back( ob );\n\t}\n\tvoid removeObserver( IObserver *ob ) {\n\t\t_lst.remove( ob );\n\t}\n\tvoid notify( const char *propName ) {\n\t\tfor ( auto it = _lst.begin(); it != _lst.end(); ++it ) {\n\t\t\t(*it)-&gt;PropertyChanged( this, propName );\n\t\t}\n\t}\n};\n\ntemplate &lt;class T&gt; class ObservableCollection : public std::list&lt;T&gt; {\nprotected:\n\tstd::list&lt;IObserver*&gt; _lst;\npublic:\n\tvoid addObserver( IObserver *ob ) {\n\t\t_lst.push_back( ob );\n\t}\n\tvoid removeObserver( IObserver *ob ) {\n\t\t_lst.remove( ob );\n\t}\n\tvoid notify( T item, IObserver::Action mode ) {\n\t\tfor ( auto it = _lst.begin(); it != _lst.end(); ++it ) {\n\t\t\t(*it)-&gt;CollectionChanged( item, mode );\n\t\t}\n\t}\npublic:\n\t\/\/ override\n\tvoid push_back( T item ) {\n\t\tstd::list&lt;T&gt;::push_back( item );\n\t\tnotify( item, IObserver::Add );\n\t}\n\tvoid remove( T item ) {\n\t\tstd::list&lt;T&gt;::remove( item );\n\t\tnotify( item, IObserver::Remove );\n\t}\n\tvoid removeAt( int index ) {\n\t\tfor ( auto it=begin(); it!=end(); ++it ) {\n\t\t\tif ( index-- == 0 ) {\n\t\t\t\tremove( *it );\n\t\t\t}\n\t\t}\n\t}\n\tvoid insert( std::list&lt;T&gt;::iterator it, T item ) {\n\t\tstd::list&lt;T&gt;::insert( it, item );\n\t\tnotify( item, IObserver::Add );\n\t}\n\t\t\n\tvoid insertAt( int index, T item ) {\n\t\tfor ( auto it=begin(); it!=end(); ++it ) {\n\t\t\tif ( index-- == 0 ) {\n\t\t\t\tinsert( it, item );\n\t\t\t}\n\t\t}\n\t}\n\tvoid clear() {\n\t\tstd::list&lt;T&gt;::clear();\n\t\tnotify( item, IObserver::Reset );\n\t}\n};\n\n#define PROPERTY( _t, _m ) \\\npublic:\t_t m_##_m;\t\\\npublic:\t\t\t\t\\\n\t__declspec(property(get=get##_m,put=set##_m)) _t _m;\t\\\n\t_t get##_m() { return m_##_m; }\t\\\n\tvoid set##_m( _t v ) {\t\t\t\\\n\t\tif ( m_##_m != v ) {\t\t\\\n\t\t\tm_##_m = v;\t\t\t\t\\\n\t\t\tnotify( #_m );\t\t\t\\\n\t\t}\t\t\t\t\t\t\t\\\n\t}\n\nclass Data : public IObservable {\npublic:\n\tPROPERTY( string, Name );\n\tPROPERTY( int, Age );\npublic:\n\tData( string name, int age ) {\n\t\tthis-&gt;m_Name = name;\n\t\tthis-&gt;m_Age = age;\n\t}\n};\nclass View : public IObserver\n{\npublic:\t\n\tvirtual void CollectionChanged( void *sender, IObserver::Action mode ) \n\t{\n\t\tData *data = (Data*)sender;\n\t\tcout &lt;&lt; &amp;quot;name: &amp;quot; &lt;&lt; data-&gt;Name &lt;&lt; &amp;quot; &amp;quot; &lt;&lt; mode  &lt;&lt; endl;\n\t}\n\tvirtual void PropertyChanged( void *sender, const char *propName ) \n\t{\n\t\tData *data = (Data*)sender;\n\t\tcout &lt;&lt; &amp;quot;name: &amp;quot; &lt;&lt; data-&gt;Name &lt;&lt; &amp;quot; &amp;quot; &lt;&lt; propName  &lt;&lt; endl;\n\t}\n};\n\nint main( void )\n{\n\tObservableCollection&lt;Data*&gt; lst;\n\t\n\tlst.push_back( new Data( &amp;quot;masuda&amp;quot;, 20 ));\n\tlst.push_back( new Data( &amp;quot;tomoaki&amp;quot;, 30 ));\n\tlst.push_back( new Data( &amp;quot;alice&amp;quot;, 10 ));\n\t\n\tView view;\n\t\/\/ append handler\n\tlst.addObserver( &amp;view );\n\tfor_each( lst.begin(), lst.end(), \n\t\t&#x5B;&amp;view](Data *v){ v-&gt;addObserver( &amp;view );});\n\t\n\tData *d = new Data( &amp;quot;nanashi&amp;quot;, 20 );\n\td-&gt;addObserver( &amp;view );\n\t\/\/ append item\n\tlst.push_back(d);\n\t\/\/ change property\n\td-&gt;Name = &amp;quot;NANASHI&amp;quot;;\n\t\n\treturn 0;\n}\n<\/pre>\n<p>\nC#\/VB \u306e ObservableCollection \u3068\u5408\u308f\u305b\u308b\u305f\u3081\u306b\u3001CollectionChanged \u3068 PropertyChanged \u3068\u3044\u3046\u30a4\u30d9\u30f3\u30c8\u304c\u767a\u751f\u3057\u307e\u3059\u3002\u901a\u77e5\u5143\u306e Model\/Data \u3067\u306f IObservable \u3092\u7d99\u627f\u3057\u3066\u3001\u901a\u77e5\u5148\u306e View \u3067\u306f IObserver \u3092\u7d99\u627f\u3057\u307e\u3059\u3002__event\/__hook \u3092\u4f7f\u3046\u3068\u3001\u76f4\u63a5\u30e1\u30f3\u30d0\u95a2\u6570\u306b\u30de\u30c3\u30d4\u30f3\u30b0\u304c\u3067\u304d\u308b\u306e\u3067\u7d99\u627f\u81ea\u4f53\u304c\u3044\u3089\u306a\u3044\u306e\u3067\u3059\u304c\u3001\u540d\u79f0\u306e\u7d71\u4e00\u6027\u3092\u8003\u3048\u308b\u3068\u660e\u793a\u7684\u306b\u7d99\u627f\u3057\u305f\u307b\u3046\u304c\u3088\u3055\u305d\u3046\u3067\u3059\u3002\n<\/p>\n<p>\nCollection \u306b\u3057\u305f\u5834\u5408\u3001\u305d\u308c\u305e\u308c\u306e\u8981\u7d20\u306e IObserver \u306e\u30b3\u30ec\u30af\u30b7\u30e7\u30f3 _lst \u304c\u7121\u99c4\u306b\u601d\u3048\u308b\u306e\u3067\u3001\u3082\u3046\u5c11\u3057\u6539\u4fee\u306f\u5fc5\u8981\u3067\u3057\u3087\u3046\u306d\u3047\u3002\u307e\u3041\u3001\u6628\u4eca\u306e\u30e1\u30e2\u30ea\u4e8b\u60c5\u306a\u3089\u3070\u3053\u306e\u307e\u307e\u3067\u3082\u826f\u3044\u304b\u3068\u3002\n<\/p>\n<p>\nIObserver\/IObservable \u3068\u3044\u3046\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e\u3088\u3046\u306a\u540d\u524d\u306b\u3057\u3066\u3044\u307e\u3059\u304c\u3001\u5b9f\u88c5\u304c\u5165\u3063\u3066\u3044\u307e\u3059\u3002\u7d14\u7c8b\u95a2\u6570\u306b\u3057\u3066\u3082\u826f\u3044\u306e\u3067\u3059\u304c\u3001\u7d99\u627f\u3059\u308b\u3051\u3069\u901a\u77e5\u3055\u308c\u305f\u304f\u306a\u3044\uff08\uff1f\uff09\u3068\u3044\u3046\u4e2d\u9014\u534a\u7aef\u306a\u72b6\u614b\u3067\u3082 ok \u306a\u306e\u3067\u3001\u3053\u308c\u3067\u3088\u3044\u304b\u3068\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>ObservableCollection(T) \u30af\u30e9\u30b9 (System.Collections.ObjectModel) http:\/\/msdn.microsoft.com\/ja-jp\/library\/ms668604. &hellip; <a href=\"http:\/\/www.moonmile.net\/blog\/archives\/3585\">\u7d9a\u304d\u3092\u8aad\u3080 <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[22],"tags":[],"class_list":["post-3585","post","type-post","status-publish","format-standard","hentry","category-c"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"http:\/\/www.moonmile.net\/blog\/wp-json\/wp\/v2\/posts\/3585","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.moonmile.net\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.moonmile.net\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.moonmile.net\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"http:\/\/www.moonmile.net\/blog\/wp-json\/wp\/v2\/comments?post=3585"}],"version-history":[{"count":1,"href":"http:\/\/www.moonmile.net\/blog\/wp-json\/wp\/v2\/posts\/3585\/revisions"}],"predecessor-version":[{"id":3586,"href":"http:\/\/www.moonmile.net\/blog\/wp-json\/wp\/v2\/posts\/3585\/revisions\/3586"}],"wp:attachment":[{"href":"http:\/\/www.moonmile.net\/blog\/wp-json\/wp\/v2\/media?parent=3585"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.moonmile.net\/blog\/wp-json\/wp\/v2\/categories?post=3585"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.moonmile.net\/blog\/wp-json\/wp\/v2\/tags?post=3585"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}