* $Id$
*
* Written by Keith Marshall <keith@users.osdn.me>
- * Copyright (C) 2020, MinGW.org Project
+ * Copyright (C) 2020, 2021, MinGW.OSDN Project
*
*
* Permission is hereby granted, free of charge, to any person obtaining a
*/
var element = document.getElementById( item );
if( element ) element.innerHTML = value;
+ return element;
}
-function no_break( text )
-{ /* Helper function to replace all occurrences of ASCII hyphen-minus,
- * within "text", by substitution of HTML non-breaking hyphen.
+function set_page( title, text )
+{ /* Helper function, for use in overlay page scripts, to update
+ * the "title" and "subtitle" fields within the page header; note
+ * that "text" may, and should, use ASCII hyphen-minus where any
+ * hyphen is to be represented; these will be replaced by HTML
+ * non-breaking hyphen entities, on header field assignment.
*/
- return text.replace( /-/g, "‑" );
-}
-
-function update_page_content_header( tag )
-{ /* Update the "page-title" and "page-subtitle" content-header text,
- * by substitution into the "as-page-title" and "as-page-subtitle"
- * place-holder elements, respectively.
- */
- var element = document.getElementById( "page-".concat( tag ));
- if( element )
- { if( tag == "title" ) document.title = element.innerHTML;
- set_content( "as-page-".concat( tag ), no_break( element.innerHTML ));
- }
+ if( title == "title" ) document.title = text;
+ set_content( "page-".concat( title ), text.replace( /-/g, "‑" ));
}
function load_content( container, src )
{ if( this.readyState == this.DONE )
switch( this.status )
{ case 200:
- set_content( container, this.responseText );
- update_page_content_header( "title" );
- update_page_content_header( "subtitle" );
+ var element = set_content( container, this.responseText );
+ var idx; element = element.getElementsByTagName( "script" );
set_content( "e404-missing-page", document.URL );
+ for( idx = 0; idx < element.length; idx++ )
+ { var onload_action = Function( element[idx].innerHTML );
+ onload_action();
+ }
+ if( src.includes("#") )
+ { src = src.substring( src.indexOf("#") + 1, src.length );
+ element = document.getElementById( src );
+ if( element ) element.scrollIntoView();
+ }
break;
case 404:
load_content( container, "missing.html" );
load_content( div, src );
}
+/* Web-Search Widget Helper Functions
+ * ----------------------------------
+ * Derived from the DuckDuckGo.com search widget implementation by
+ * Juri Wornowitski, as described at https://www.plainlight.com/ddg,
+ * these facilitate incorporation of multiple search widget variants,
+ * at multiple locations across the site.
+ *
+ */
+function ddg_widget( ref )
+{ /* Acquire a reference to the "submit" button, within the search
+ * widget; the containing "form" element uses this to simulate a
+ * click event, if the form is submitted by pressing the "enter"
+ * key, when the "input" field has the focus.
+ */
+ ref = ref.getElementsByTagName( "button" );
+ for( idx = 0; idx < ref.length; idx++ )
+ if( ref[idx].type == "submit" ) return ref[idx];
+ return undefined;
+}
+
+function ddg_google_search_site( domain )
+{ /* Encode a search "domain" as a "site:" reference, to be appended
+ * to the query URL, when a DuckDuckGo.com search is directed to the
+ * Google search engine, via DuckDuckGo.com's "bang" facility.
+ */
+ return "+".concat( encodeURIComponent( "site:".concat( domain )));
+}
+
+function ddg_bang( src, query, domain )
+{ /* Set up a query, using DuckDuckGo.com's "bang" facility, (directed
+ * to the "bang" identified by "src"); append the query, appropriately
+ * encoded, and optionally a "domain" URL whence the query results are
+ * to be retrieved.
+ */
+ const bang = "https://duckduckgo.com?q=".concat( encodeURIComponent( "!" ));
+ query = bang.concat( src.concat( "+".concat( encodeURIComponent( query ))));
+ return query.concat( domain );
+}
+
+function ddg_query( widget )
+{ /* Retrieve the current value entered into the query "input" field;
+ * (this is identified by having a "name" property value of "q").
+ */
+ widget = widget.getElementsByTagName( "input" );
+ for( idx = 0; idx < widget.length; idx++ )
+ if( widget[idx].name == "q" ) return widget[idx].value;
+ return undefined;
+}
+
+function ddg_google_search( widget, target, domain )
+{ /* Initiate a Google search, from the DuckDuckGo.com search widget;
+ * (the "widget" reference is initially associated with the "submit"
+ * button, whence we retrieve the query context via the parent form).
+ * If "domain" is not null, it is assumed to represent a "site:" URL,
+ * where the search is to be performed, while boolean value "target"
+ * indicates whether or not a new browser window is to be opened to
+ * display the search results.
+ */
+ var query = ddg_query( widget.parentElement );
+ if( domain.length > 0 ) domain = ddg_google_search_site( domain );
+ if( target ) window.open( ddg_bang( "g", query, domain ));
+ else ddg_bang( "g", query, domain );
+ return false;
+}
+
+function osdn_archive( project, list )
+{ /* Construct a URL to represent the search domain for an OSDN.net
+ * mailing list archive, for any specified "list", belonging to a
+ * specified "project".
+ */
+ const template = "https://osdn.net/projects/%P%/lists/archive/";
+ return template.replace( "%P%", project ).concat( list );
+}
+
/* $RCSfile$: end of file */
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