--- Webpacus/root/js/webpac.js	2005/11/24 22:29:34	136
+++ Webpacus/root/js/webpac.js	2005/11/26 16:39:56	162
@@ -3,33 +3,119 @@
 // Documented in this code only, I'm afraid. Beware of dragons!
 // Dobrica Pavlinusic dpavlin(at)rot13(dot)org 2005-11-22
 
+/*
+	load another template
+*/
 function load_template(template_name) {
-//	alert('load_template '+template_name+' old template is '+$('template_name').value);
+
+	var old_template = $('template_name').value;
+
+	Logger.info('load_template: '+template_name+' (old: '+old_template+')');
+
+	if (template_name == old_template) {
+		Logger.error('why reload same template?');
+		return false;
+	}
 
 	$('template_name').value = template_name;
+	submit_results_form();
+	return false;
+}
+
+/*
+	pager
+*/
+function load_results_page(page_nr) {
+
+	if (parseInt(page_nr) != page_nr) {
+		Logger.error("load_results_page can't parseInt "+page_nr);
+		return false;
+	}
+
+	var old_page = get_page_nr();
+
+	if (page_nr < 1) {
+		Logger.error("load_results_page called with '"+page_nr+"' < 1");
+		return false;
+	}
+
+	Logger.info('load_results_page: '+page_nr+' (from page: '+old_page+')');
+
+	if (page_nr == old_page) {
+		Logger.error('why reload same page?');
+		return false;
+	}
+
+	$('page_nr').value = page_nr;
+	submit_results_form();
+
+	return false;
+}
+
+function get_page_nr() {
+	var page_nr = parseInt( $('page_nr').value ) || 1;
+	return page_nr;
+}
+
+/* syntaxtic sugar */
+function set_page_nr(nr) {
+	return load_results_page(nr);
+}
+
+function next_page() {
+	load_results_page( get_page_nr() + 1 );
+	return false;
+}
 
-	new Ajax.Updater( 'results', '/results', {
-		parameters: Form.serialize( $('results_form') ),
-		asynchronous: 1,
-		onLoading: function(request) {
-			show_searching();
-		},
-		onLoaded: function(request) {
-			Element.hide('searching');
-/*			hide_searching(); */
-		}
-	} ) ;
+function prev_page() {
+	load_results_page( get_page_nr() - 1 );
 	return false;
 }
 
+/*
+	submit results form using AJAX
+*/
+function submit_results_form() {
+	var results_form = $('results_form');
+
+	if (results_form) {
+		var form_params = Form.serialize( results_form );
+
+		Logger.debug('Ajax.Updater(results,/results) '+form_params);
+
+		new Ajax.Updater( 'results', '/search/results', {
+			parameters: form_params,
+			asynchronous: 1,
+			onLoading: function(request) {
+				show_searching();
+			},
+			onLoaded: function(request) {
+				hide_searching();
+			}
+		} ) ;
+		return false;
+	} else {
+		Logger.debug('no results_form element');
+		return undef;
+	}
+	return false;
+}
+
+/*
+	helper functions for submit_results_form()
+*/
 function show_searching() {
+	Logger.debug('show_searching');
 	Element.show('searching');
 	new Effect.Fade('results', { duration: 0.3 });
+	return false;
 }
 
 function hide_searching() {
+	Logger.debug('hide_searching');
 	Element.hide('searching');
 	//new Effect.Highlight('results');
 	new Effect.Appear('results', { duration: 0.3 });
+	return false;
 }