#
# highlight.rb: Highlighting the element jumped from other pages.
#
# Copyright (C) 2003 by Ryuji SAKAI
# Copyright (C) 2003 by Kazuhiro NISHIYAMA
# You can redistribute it and/or modify it under GPL2.
#
if @mode == 'day' and not bot? then
	diary_date = @date.strftime('%Y%m%d')
	diary_title = h( @conf.html_title )
	section_anchor = apply_plugin( @conf.section_anchor, true )
	jsstr = lambda{|s| s.gsub(/["\\]/){|x| "\\#{x}" } }
	add_footer_proc do
		<<-SCRIPT.gsub(/^\t\t/, '')
		<script type="text/javascript">
		/*<![CDATA[*/
			var HighlightElement = function(){
				var self = {
					highlightingElement: null,
					highlight: function(){
						if (document.location.hash && document.location.hash != "#c") {
							self.highlightElement(document.location.hash.substr(1));
						}
					},
					highlightElement: function(name) {
						if (self.highlightingElement) {
							self.highlightingElement.className = self.highlightingElement.className.replace(/(^|\\s+)highlight(?=\\s|$)/, "");
							self.highlightingElement = null;
						}

						var highlightTarget = self.getHighlightElement(name);
						if (!highlightTarget) return;

						highlightTarget.className += " highlight";
						self.highlightingElement = highlightTarget;

						if (highlightTarget.tagName.toLowerCase() == 'h3') {
							var section_title = highlightTarget.innerHTML.
								replace(/<[^>]+>/g, "").                  // remove tags
								substr(self.section_anchor.length).       // remove section anchor
								replace(/^ *(?:\\[[^[\\]]+])*| +$/g, ""); // remove category & strip leading/trailing white-spaces
							document.title = self.doctitle_format.
								replace(/\\$(dtitle|date|name|title)/g, function($0){
									return { $dtitle:self.diary_title, $date:self.diary_date, $name:name, $title:section_title }[$0];
								}).
								replace(/&(amp|quot|lt|gt);/g, function($0, $1){
									return { amp:"&", quot:'"', lt:"<", gt:">" }[$1];
								});
						}
					},
					getHighlightElement: function(name) {
						for (var i=0, l=document.anchors.length; i<l; ++i) {
							var anchor = document.anchors[i];
							if (anchor.name == name) {
								return anchor.parentElement || anchor.parentNode;
							}
						}
						return null;
					},
					diary_date    : "#{jsstr.call diary_date }",
					diary_title   : "#{jsstr.call diary_title }",
					section_anchor: "#{jsstr.call section_anchor }",
					doctitle_format: "$dtitle[$date$name] $title"
				};

				var handleLinkClick = function() {
					self.highlightElement(this.hash.substr(1));
				};
				var hereURL = document.location.href.split(/\#[pc]/)[0];
				for (var i=0; i<document.links.length; ++i) {
					if (hereURL == document.links[i].href.split(/#/)[0]) {
						document.links[i].onclick = handleLinkClick;
					}
				};

				return self;
			}();
			HighlightElement.highlight();
		/*]]>*/
		</script>
		SCRIPT
	end
end

# Local Variables:
# mode: ruby
# indent-tabs-mode: t
# tab-width: 3
# ruby-indent-level: 3
# End:
# vi: ts=3 sw=3