jquery/no_pager/no_pager.js

/*
        no pager, as seen at
        http://www.humanized.com/weblog/2006/04/28/reading_humanized/
        but using jquery

        2006-08-16 Dobrica Pavlinusic <dpavlin@rot13.org>
*/

var preloadDistance = 1000;
var isUpdating = false;
var isMouseDown = false;
var checker;
var v;
var cookie = 'no_pager';

function load_page() {
        setCookie(cookie+"_height", getScrollHeight() );
        setCookie(cookie+"_scroll", getScrollHeight() - _getWindowHeight() );

        if ( isUpdating == true
                || isMouseDown == true
                || getPageHeight() - getScrollHeight() > preloadDistance
                || v.page >= v.max_page
        ) return;

        v.page++;

        $.log.info(
                'get page: ' + v.page,
                'search: ' + v.search,
                'PageHeight:' + getPageHeight(),
                'ScrollHeight:' + getScrollHeight()
        );

        setCookie( cookie+'_page', v.page );
        isUpdating = true;

        $('#status').html(
                'Loading page '+ v.page + '...'
        );

        $.get(
                "index.cgi/snippet",
                {
                        page: v.page,
                        search: v.search
                },
                function ( response ) {
                        
                        $('#next_page').html( response );

                        eval( 'v=' + $('#json').val() );

                        isUpdating = false;
                        $('#status').html( v.status );
                }
        );


}

/*
        bind events and init no_pager
*/

$(document).ready( function() {

        $.log.info('no_page binding events');

        eval( 'v=' + $('#json').val() );

        var cookie_id = getCookie(cookie+'_id') || 0;

        $.log.debug("Page ID:" + v.id);
        $.log.debug("Page Cookie:" + cookie_id);

        var fromBackButton = false;
        if ( cookie_id == v.id ) {
                fromBackButton = true;
        } else {
                setCookie(cookie+'_id', v.id);
        }

        $.log.debug("from Back button? " + fromBackButton);
        if ( fromBackButton ) {
                $.log.info( 'Load ' + getCookie(cookie+'_page') + ' pages');
                $.log.debug( 'Scroll to:' + getCookie(cookie+'_scroll') );
                $('#spacer').height( getCookie(cookie+'_height')+"px" );
                scroll( 0, getCookie(cookie+'_scroll') );
        }

        $(window).mousedown( function () {
                isMouseDown = true;
        });
        $(window).mouseup( function () {
                isMouseDown = false;
        });

        checker = setInterval(function () {
                load_page();
        }, 100);


});

1	/*
2	no pager, as seen at
3	http://www.humanized.com/weblog/2006/04/28/reading_humanized/
4	but using jquery
5
6	2006-08-16 Dobrica Pavlinusic <dpavlin@rot13.org>
7	*/
8
9	var preloadDistance = 1000;
10	var isUpdating = false;
11	var isMouseDown = false;
12	var checker;
13	var v;
14	var cookie = 'no_pager';
15
16	function load_page() {
17	setCookie(cookie+"_height", getScrollHeight() );
18	setCookie(cookie+"_scroll", getScrollHeight() - _getWindowHeight() );
19
20	if ( isUpdating == true
21	\|\| isMouseDown == true
22	\|\| getPageHeight() - getScrollHeight() > preloadDistance
23	\|\| v.page >= v.max_page
24	) return;
25
26	v.page++;
27
28	$.log.info(
29	'get page: ' + v.page,
30	'search: ' + v.search,
31	'PageHeight:' + getPageHeight(),
32	'ScrollHeight:' + getScrollHeight()
33	);
34
35	setCookie( cookie+'_page', v.page );
36	isUpdating = true;
37
38	$('#status').html(
39	'Loading page '+ v.page + '...'
40	);
41
42	$.get(
43	"index.cgi/snippet",
44	{
45	page: v.page,
46	search: v.search
47	},
48	function ( response ) {
49
50	$('#next_page').html( response );
51
52	eval( 'v=' + $('#json').val() );
53
54	isUpdating = false;
55	$('#status').html( v.status );
56	}
57	);
58
59
60	}
61
62	/*
63	bind events and init no_pager
64	*/
65
66	$(document).ready( function() {
67
68	$.log.info('no_page binding events');
69
70	eval( 'v=' + $('#json').val() );
71
72	var cookie_id = getCookie(cookie+'_id') \|\| 0;
73
74	$.log.debug("Page ID:" + v.id);
75	$.log.debug("Page Cookie:" + cookie_id);
76
77	var fromBackButton = false;
78	if ( cookie_id == v.id ) {
79	fromBackButton = true;
80	} else {
81	setCookie(cookie+'_id', v.id);
82	}
83
84	$.log.debug("from Back button? " + fromBackButton);
85	if ( fromBackButton ) {
86	$.log.info( 'Load ' + getCookie(cookie+'_page') + ' pages');
87	$.log.debug( 'Scroll to:' + getCookie(cookie+'_scroll') );
88	$('#spacer').height( getCookie(cookie+'_height')+"px" );
89	scroll( 0, getCookie(cookie+'_scroll') );
90	}
91
92	$(window).mousedown( function () {
93	isMouseDown = true;
94	});
95	$(window).mouseup( function () {
96	isMouseDown = false;
97	});
98
99	checker = setInterval(function () {
100	load_page();
101	}, 100);
102
103
104	});
105