added basic support for htmx (ajax)

- if there is HX-Request header present we sent only a part of the whole html
- we return only specific stream defined by [out ...] ezc statement
- the name of the stream is passed in the 'frame' parameter
  (if not present then 'content' is assumed)
- added ezc function: winix_is_htmx_request

winixd/core/app.cpp

@@ -724,6 +724,25 @@ void App::SaveSessionsIfNeeded()
 
 
 
+const std::wstring * App::CreateFrameAnswer()
+{
+	Request & req = *cur.request;
+	auto i = req.out_streams.streams_map.begin();
+	const std::wstring * frame = cur.request->ParamValuep(L"frame");
+
+	for( ; i != req.out_streams.streams_map.end() ; ++i)
+	{
+		if( (frame && i->first == *frame) || (!frame && i->first == L"content") )
+		{
+			return &i->second->Str();
+			break;
+		}
+	}
+
+	return nullptr;
+}
+
+
 void App::CreateJSONAnswer()
 {
 	Request & req = *cur.request;
@@ -1764,11 +1783,12 @@ return header;
 
 void App::SendTextAnswer()
 {
-const std::wstring * source;
+const std::wstring * source = nullptr;
 bool compressing = false;
 int compress_encoding = 0;
 size_t output_size = 0;
 
+
 	Header header = GetHTTPStatusCode();
 
 	if( CanSendContent() )
@@ -1781,6 +1801,17 @@ size_t output_size = 0;
 			source = &json_out_stream.Str(); // json_out_stream was prepared by CreateJSONAnswer()
 		}
 		else
+		if( cur.request->headers_in.has_key(L"HX-Request") || cur.request->headers_in.has_key(L"hx_request") ) // fastcgi will change the header to hx_request
+		{
+			source = CreateFrameAnswer();
+
+			if( !source )
+			{
+				empty_response.clear();
+				source = &empty_response;
+			}
+		}
+		else
 		{
 			source = &cur.request->out_main_stream.Str();
 		}

winixd/core/app.h

@@ -164,6 +164,7 @@ private:
 	std::wstring http_header_name;
 	std::wstring http_header_value;
 	std::string http_header_8bit;
+	std::wstring empty_response;
 
 	morm::ModelConnector model_connector; // main thread model connector, each thread has its own connector
 	morm::JSONConnector json_connector;
@@ -206,6 +207,7 @@ private:
 	void SaveSessionsIfNeeded(); // !! IMPROVE ME wywalic do menagera sesji??
 	void LogAccess();
 	void SendData(const BinaryPage & page, FCGX_Stream * out);
+	const std::wstring * CreateFrameAnswer();
 	void CreateJSONAnswer();
 
 	void ReadRequest();

winixd/html/ckeditor.html

@@ -3,13 +3,17 @@
 
 [# blocks are not connected with languages yet, so don't use \{ but {]
 
-
-
-if ( CKEDITOR.env.ie && CKEDITOR.env.version < 9 )
-{
-	CKEDITOR.tools.enableHtml5Elements( document );
+function winix_ckeditor_old_browser_support() {
+	if ( CKEDITOR.env.ie && CKEDITOR.env.version < 9 )
+	{
+		CKEDITOR.tools.enableHtml5Elements( document );
+	}
 }
 
+[if not winix_is_htmx_request]
+	winix_ckeditor_old_browser_support();
+[end]
+
 </script>
 [end]
 
@@ -22,6 +26,7 @@ if ( CKEDITOR.env.ie && CKEDITOR.env.version < 9 )
 [block ckeditor]
 <script>
 
+function winix_ckeditor_initialize() {
 
 var editorElement = CKEDITOR.document.getById( '[0]' );
 editorElement.setAttribute( 'contenteditable', 'true' );
@@ -83,6 +88,13 @@ extraAllowedContent : 'aside caption figure figcaption article footer header sec
 
 });
 
+
+}
+
+[if not winix_is_htmx_request]
+	winix_ckeditor_initialize();
+[end]
+
 </script>
 
 

winixd/html/index_bottom_adder.html

@@ -1,2 +1,180 @@
 
+[if winix_has_htmx]
+	<div id="winix-oob" hx-swap-oob="true">
+	[# content added by htmx library when using hx-swap-oob]
+
+	[if winix_is_htmx_request]
+
+	
+	[out "content"]
+		<script>
+				
+		function winix_css_download_by_index(css_files, index, callback)
+		\{
+			if( index < css_files.length ) 
+			\{
+				var link = document.createElement('link');
+				link.classList.add("winix-auto-delete");
+				link.rel = 'stylesheet'; 
+				link.type = 'text/css';
+				
+				link.onload = function() \{
+					console.log("loading external css: " + css_files\[index\]);
+					winix_css_download_by_index(css_files, index+1, callback);
+				\}
+				
+				link.href = css_files\[index\];
+				document.head.appendChild(link);
+			\}
+			else
+			\{
+				console.log("all css files downloaded");
+				callback();
+			\}
+		\}
+				
+		function winix_css_download(css_files, callback)
+		\{
+			// add test if css_files is a table
+			winix_css_download_by_index(css_files, 0, callback);
+		\}
+
+
+		function winix_js_download_by_index(js_files, index, callback)
+		\{
+			if( index < js_files.length ) 
+			\{
+				var script = document.createElement('script');
+				script.classList.add("winix-auto-delete");
+				
+				script.onload = function() \{
+					console.log("loading external js: " + js_files\[index\]);
+					winix_js_download_by_index(js_files, index+1, callback);
+				\}
+				
+				script.src = js_files\[index\];
+				document.head.appendChild(script);
+			\}
+			else
+			\{
+				console.log("all js files downloaded");
+				callback();
+			\}
+		\}
+				
+		function winix_js_download(js_files, callback)
+		\{
+			// add test if js_files is a table
+			winix_js_download_by_index(js_files, 0, callback);
+		\}
+		
+		</script>
+	[end] [# out "content"]
+	
+	
+	
+	[if winix_function_is "emacs"]
+	[out "content"]
+
+		<style>
+		.CodeMirror-matchingtag \{
+			font-weight: bold;
+			background: none;
+		\}
+
+		.CodeMirror-activeline-background \{
+			background: #f3f3f3;
+		\}
+
+		.CodeMirror \{
+			border: 1px solid #dedede;
+		\}
+		</style>
+
+
+		<script>
+		var winix_code_mirror_editor;
+		
+		js_files = \[
+			"[doc_base_url_common]/codemirror/5.59.2/lib/codemirror.js",
+			"[doc_base_url_common]/codemirror/5.59.2/mode/css/css.js",
+			"[doc_base_url_common]/codemirror/5.59.2/mode/javascript/javascript.js",
+			"[doc_base_url_common]/codemirror/5.59.2/mode/xml/xml.js",
+			"[doc_base_url_common]/codemirror/5.59.2/mode/htmlmixed/htmlmixed.js",
+			"[doc_base_url_common]/codemirror/5.59.2/addon/display/fullscreen.js",
+			"[doc_base_url_common]/codemirror/5.59.2/addon/fold/xml-fold.js",
+			"[doc_base_url_common]/codemirror/5.59.2/addon/edit/matchtags.js",
+			"[doc_base_url_common]/codemirror/5.59.2/addon/selection/active-line.js",
+		\];
+		
+		css_files = \[
+			"[doc_base_url_common]/codemirror/5.59.2/lib/codemirror.css",
+			"[doc_base_url_common]/codemirror/5.59.2/addon/display/fullscreen.css",
+		\];
+		
+		winix_js_download(js_files, winix_initialize_editor);
+		winix_css_download(css_files, function()\{\});
+		
+		
+		function winix_initialize_editor()
+		\{
+			var text_area = document.getElementById("winix_content_id");
+			if( text_area )
+			\{
+				winix_code_mirror_editor = CodeMirror.fromTextArea(text_area, \{
+					mode: "htmlmixed",
+					theme: "default",
+					indentUnit: 4,
+					smartIndent: true,
+					tabSize: 4,
+					indentWithTabs: true,
+					extraKeys: \{
+						"F11": function(cm) \{ cm.setOption("fullScreen", !cm.getOption("fullScreen")); \},
+						"Esc": function(cm) \{ if (cm.getOption("fullScreen")) cm.setOption("fullScreen", false); \}
+					\},
+					lineNumbers: true,
+					lineWiseCopyCut: false,
+					dragDrop: false,
+					matchTags: true,
+					styleActiveLine: true
+				\});
+			\}
+		\}
+
+		</script>
+	[end] [# out "content"]
+	[end] [# if winix_function_is "emacs"]
+
+
+
+	[if winix_function_is "ckeditor"]
+	[out "content"]
+
+		[# what about winix_has_jquery?]
+		
+		<script>
+		js_files = \[
+			"[doc_base_url_common]/ckeditor_4.9.2/ckeditor.js",
+			"[doc_base_url_common]/jquery/1.12.4/jquery.min.js",
+			"[doc_base_url_common]/winix/update_button.js",
+		\];
+
+		winix_js_download(js_files, winix_ckeditor_initialize);
+		
+		</script>
+	[end]
+
+
+	[end] [# out "content"]
+	[end] [# if winix_function_is "emacs"]
+
+
+	[end] [# if winix_is_htmx_request]
+	</div>
+[end] [# if winix_has_htmx]
+
+
+
+
+
 

winixd/html/index_head_adder.html

@@ -37,10 +37,27 @@
 
 [if winix_load_htmx]
 	[def winix_has_htmx true]
+
 	<script src="[doc_base_url_common]/htmx.org/1.4.0/dist/htmx.min.js"></script>
 [end]
 
 
+[if winix_has_htmx]
+	<script>htmx.on("htmx:afterOnLoad", function(evt) \{
+	
+	[# we can optimize it by searching first the <head> tag]
+	var winix_elements = htmx.findAll(".winix-auto-delete");
+	
+	for(var i=0 ; i<winix_elements.length ; ++i)
+	\{
+		console.log("removing:");
+		console.log(winix_elements\[i\]);
+		htmx.remove(winix_elements\[i\]);
+	\}
+	
+	\});
+	</script>
+[end]
 
 
 [if winix_function_is "emacs"]

winixd/templates/templates.cpp

@@ -766,6 +766,7 @@ void Templates::CreateFunctions()
 	ezc_functions.Insert("winix_locale_tab",                       winix_locale_tab);
 	ezc_functions.Insert("winix_locale_tab_id",                    winix_locale_tab_id);
 	ezc_functions.Insert("winix_locale_tab_name",                  winix_locale_tab_name);
+	ezc_functions.Insert("winix_is_htmx_request",                  winix_is_htmx_request);
 
 
 	/*

winixd/templates/templates.h

@@ -661,7 +661,7 @@ namespace TemplatesFunctions
 	void winix_locale_tab(Info & i);
 	void winix_locale_tab_id(Info & i);
 	void winix_locale_tab_name(Info & i);
-
+	void winix_is_htmx_request(Info & i);
 
 	/*
 		who

winixd/templates/winix.cpp

@@ -375,6 +375,15 @@ void winix_locale_tab_name(Info & i)
 }
 
 
+void winix_is_htmx_request(Info & i)
+{
+	if( cur->request->headers_in.has_key(L"HX-Request") || cur->request->headers_in.has_key(L"hx_request") )
+	{
+		// fastcgi will change the header to hx_request
+		i.res = true;
+	}
+}
+