Tweet

Tweet

Slide 1

Slide 1 text

building evented single-page applications Sunday, September 13, 2009

Slide 2

Slide 2 text

1. who 2. why 3. demo 4. how Sunday, September 13, 2009

Slide 3

Slide 3 text

1. who Sunday, September 13, 2009

Slide 4

Slide 4 text

chancellor http://orderedlist.com/ Sunday, September 13, 2009

Slide 5

Slide 5 text

professor http://teaching.johnnunemaker.com/ Sunday, September 13, 2009

Slide 6

Slide 6 text

rubyist http://railstips.org/ Sunday, September 13, 2009

Slide 7

Slide 7 text

i’m not perfect Sunday, September 13, 2009

Slide 8

Slide 8 text

2. why Sunday, September 13, 2009

Slide 9

Slide 9 text

because? Sunday, September 13, 2009

Slide 10

Slide 10 text

because? Sunday, September 13, 2009

Slide 11

Slide 11 text

speed only send what changes across the wire Sunday, September 13, 2009

Slide 12

Slide 12 text

perceived speed Sunday, September 13, 2009

Slide 13

Slide 13 text

interactivity Sunday, September 13, 2009

Slide 14

Slide 14 text

experience but the greatest of these is... Sunday, September 13, 2009

Slide 15

Slide 15 text

3. demo Sunday, September 13, 2009

Slide 16

Slide 16 text

http://peoplebase.com/ http://harmonyapp.com/ Sunday, September 13, 2009

Slide 17

Slide 17 text

4. how Sunday, September 13, 2009

Slide 18

Slide 18 text

goals Sunday, September 13, 2009

Slide 19

Slide 19 text

no reloads Sunday, September 13, 2009

Slide 20

Slide 20 text

no reloads history/refresh Sunday, September 13, 2009

Slide 21

Slide 21 text

no reloads history/refresh easy Sunday, September 13, 2009

Slide 22

Slide 22 text

# Sunday, September 13, 2009

Slide 23

Slide 23 text

no reloads history/refresh easy Sunday, September 13, 2009

Slide 24

Slide 24 text

no reloads history/refresh easy Sunday, September 13, 2009

Slide 25

Slide 25 text

no reloads history/refresh easy Sunday, September 13, 2009

Slide 26

Slide 26 text

no reloads history/refresh easy Sunday, September 13, 2009

Slide 27

Slide 27 text

the end Sunday, September 13, 2009

Slide 28

Slide 28 text

no reloads Sunday, September 13, 2009

Slide 29

Slide 29 text

Items Sunday, September 13, 2009

Slide 30

Slide 30 text

$("a[href^='#/']").live('click', function (event) { var $link = $(this); window.location.hash = $link.attr('href'); $(document).trigger('hashchange'); return false; }); Sunday, September 13, 2009

Slide 31

Slide 31 text

$(document).bind('hashchange', Layout.reload); Sunday, September 13, 2009

Slide 32

Slide 32 text

var Layout = { reload: function() { Layout.load(window.location.hash); } }; Sunday, September 13, 2009

Slide 33

Slide 33 text

var Layout = { load: function(path, options) { path = path.replace(/^#/, ''); // trigger path loading events $.ajax({ url : path, dataType : 'json', success : function(json) { Layout.onSuccess(json); // trigger path success events if (options && options.success) { options.success(); } }, complete : function() { if (options && options.complete) { options.complete(); } } }); } }; Sunday, September 13, 2009

Slide 34

Slide 34 text

var Layout = { load: function(path, options) { path = path.replace(/^#/, ''); $(document).trigger('path:loading', [path]); $(document).trigger('path:loading:' + path); $.ajax({ url: path, dataType: 'json', success: function(json) { Layout.onSuccess(json); $(document).trigger('path:success', [path, json]); $(document).trigger('path:success:' + path, [json]); if (options && options.success) { options.success(); } }, complete: function() { if (options && options.complete) { options.complete(); } } }); } }; Sunday, September 13, 2009

Slide 35

Slide 35 text

var Layout = { onSuccess: function(json) { Layout.applyJSON(json); // trigger layout success }, }; Sunday, September 13, 2009

Slide 36

Slide 36 text

no reloads Sunday, September 13, 2009

Slide 37

Slide 37 text

history/refresh Sunday, September 13, 2009

Slide 38

Slide 38 text

setInterval(function() { var hash_is_new = window.location.hash && window.currentHash != window.location.hash; if (hash_is_new) { window.currentHash = window.location.hash; Layout.handlePageLoad(); } }, 300); Sunday, September 13, 2009

Slide 39

Slide 39 text

#/org/groups/12/45/new Sunday, September 13, 2009

Slide 40

Slide 40 text

org groups 12 45 new Sunday, September 13, 2009

Slide 41

Slide 41 text

org groups 12 45 new Sunday, September 13, 2009

Slide 42

Slide 42 text

org groups 12 45 new Sunday, September 13, 2009

Slide 43

Slide 43 text

org groups 12 45 new Sunday, September 13, 2009

Slide 44

Slide 44 text

org groups 12 45 new Sunday, September 13, 2009

Slide 45

Slide 45 text

org groups 12 45 new Sunday, September 13, 2009

Slide 46

Slide 46 text

var Layout = { handlePageLoad: function() { var segments = window.location.hash.replace(/^#\//, '').split('/'), total = segments.length, path = ''; function loadSectionsInOrder() { var segment = segments.shift(); path += '/' + segment; var onComplete = function() { var loaded = total - segments.length, finished = loaded == total; if (!finished) { loadSectionsInOrder(); } }; Layout.load(path, {complete: onComplete}); } loadSectionsInOrder(); } }; Sunday, September 13, 2009

Slide 47

Slide 47 text

var Layout = { handlePageLoad: function() { var segments = window.location.hash.replace(/^#\//, '').split('/'), total = segments.length, path = ''; $(document).trigger('page:loading'); function loadSectionsInOrder() { var segment = segments.shift(); path += '/' + segment; var onComplete = function() { var loaded = total - segments.length, finished = loaded == total; $(document).trigger('page:progress', [total, loaded]); if (finished) { $(document).trigger('page:loaded'); } else { loadSectionsInOrder(); } }; Layout.load(path, {complete: onComplete}); } loadSectionsInOrder(); } }; Sunday, September 13, 2009

Slide 48

Slide 48 text

$(document).bind('page:progress', function(e, total, loaded) { if (total != loaded) { var final_width = 114, new_width = (loaded/total) * final_width; $('#loading_progress').animate({width: new_width+'px'}, 200); } }); $(document).bind('page:loading', function() { $('#harmony_loading').show(); $('#loading_progress').css('width', 0); }); $(document).bind('page:loaded', function() { $('#loading_progress').animate({width:'114px'}, 300, 'linear', function() { $('#harmony_loading').hide(); }); }); Sunday, September 13, 2009

Slide 49

Slide 49 text

history/refresh Sunday, September 13, 2009

Slide 50

Slide 50 text

easy Sunday, September 13, 2009

Slide 51

Slide 51 text

rule #1: abuse events for better code separation and easier customization http://orderedlist.com/articles/jquery-evented-programming-primer Sunday, September 13, 2009

Slide 52

Slide 52 text

$('form').live('submit', function(event) { var $form = $(this); $form.ajaxSubmit({ dataType: 'json', beforeSend: function() { // trigger before send }, success: function(json) { // if errors, show them, else apply json and reset form }, error: function(response, status, error) { // trigger error }, complete: function() { // trigger complete } }); return false; }); Sunday, September 13, 2009

Slide 53

Slide 53 text

$('form').live('submit', function(event) { var $form = $(this); $form.ajaxSubmit({ dataType: 'json', beforeSend: function() { $form.trigger('form:beforeSend'); }, success: function(json) { if (json.errors) { $form.showErrors(json.errors); } else { Layout.onSuccess(json); $form.trigger('form:success', [json]); $form.resetForm(); } }, error: function(response, status, error) { $form.trigger('form:error', [response, status, error]); }, complete: function() { $form.trigger('form:complete'); } }); return false; }); Sunday, September 13, 2009

Slide 54

Slide 54 text

var Site = { onCreateSuccess: function(event, json) { Sidebar.highlight($('#site_' + json.id)) Layout.updateHashWithoutLoad(window.location.hash.replace(/new$/, json.id)); }, onUpdateSuccess: function(event, json) { Sidebar.highlight($('#site_' + json.id)) } }; $('form.new_site').live('form:success', Site.onCreateSuccess); $('form.edit_site').live('form:success', Site.onUpdateSuccess); Sunday, September 13, 2009

Slide 55

Slide 55 text

var Field = { onCreateSuccess: function(event, json) { $('#list_section_' + json.section_id) .addSectionField(json.field_title.toLowerCase()); }, onUpdateSuccess: function(event, json) { $('#list_section_' + json.section_id) .removeSectionField(json.old_title.toLowerCase()) .addSectionField(json.new_title.toLowerCase()); } }; $('form.new_field') .live('form:success', Field.onCreateSuccess); $('form.edit_field').live('form:success', Field.onUpdateSuccess); Sunday, September 13, 2009

Slide 56

Slide 56 text

Layout.applyJSON accepts json like below and “applies” it to the layout; gets called with each url load either from click or form Sunday, September 13, 2009

Slide 57

Slide 57 text

Layout.applyJSON { 'replace': { '#content': '

Heading

Yay!

' }, 'replaceWith': { '#post_12': '

...

' }, 'remove': ['#post_11', '#comment_12'] } Sunday, September 13, 2009

Slide 58

Slide 58 text

rule #2: the url dictates everything Sunday, September 13, 2009

Slide 59

Slide 59 text

var Layout = { livePath: function(event, path, callback) { if (typeof(test) === 'string') { $(document).bind('path:' + event + ':' + path, callback); } else { Layout.live_path_regex[event].push([path, callback]); } } }; Sunday, September 13, 2009

Slide 60

Slide 60 text

Layout.livePath('loading', /\/org\/([^\/]+)([0-9\/]+).*/, Groups.loading); Layout.livePath('loading', /\/sections\/([0-9]+)$/, Sections.markCurrent); Layout.livePath('success', '/org/groups', Groups.setup); Layout.livePath('success', '/sections', Sections.makeSortable); Layout.livePath('success', /\/admin\/assets(.*)/, Assets.init); Layout.livePath('success', /\/admin\/items\/(\d+)/, ItemForm.init); Layout.livePath('success', /\/admin\/items\/([0-9\/]+)/, Items.manageSidebar); Sunday, September 13, 2009

Slide 61

Slide 61 text

rule #3: do it live Sunday, September 13, 2009

Slide 62

Slide 62 text

$('a.field_form_toggler') .live('click', Fields.toggleAddFieldForm); $('form.new_section') .live('form:success', SectionForm.onCreateSuccess); $('form.edit_section') .live('form:success', SectionForm.onUpdateSuccess); $('form.new_field') .live('form:success', Field.onCreateSuccess); $('form.edit_field') .live('form:success', Field.onUpdateSuccess); $('a.field_destroy') .live('destroy:success', Field.onDestroySuccess); Sunday, September 13, 2009

Slide 63

Slide 63 text

easy Sunday, September 13, 2009