cocoa - OSX. Document & Window Controller design. How to interact with model -


i working on personal os x app, using cocoa, , have trouble designing interaction between document , window controller.

this summary of have far:

  • a document (nsdocument subclass), owns "model data", , in charge of loading, saving data from/to files, etc.
  • a window controller (nswindowcontroller subclass), attached document, creates window, , takes care "model data" displayed user.

now, question:

how window controller , document interact? more specifically: when event happens in view (e.g. user enters data), how window controller reaches model? see 2 options:

  1. the window controller takes care of updating data in model. seems straightforward, creates caos in how model accessed, since document 1 should manage model data.
  2. the window controller sends request document, , document takes care of updating model. keeps things more clear conceptually, implementation feels weird: window controller call document's "applychange:" method, , document perform "applychange:" on model; duplicating virtually going view model, since document act facade model, , window controller act facade of document... feels many facades!

i don't know do.

edited:

subclass of nsdocument is model controller (thanks correcting me).
more on that:nsdocument design perspective object in memory owns , manages document data.

enter image description here

to reach document window controller call @selector(document)

[self document]; //within windowcontroller subclass

design:

you follow mvc pattern , other design patterns (mostly delegates , notifications). take @ lister app. if don't have access have uploaded github wonderful example (behind wall) shapeart app demo during wwdc 2013 (bringing ios apps os x).

maybe question more suitable move codereview


Comments

Post a Comment

Popular posts from this blog

javascript - Jquery show_hide, what to add in order to make the page scroll to the bottom of the hidden field once button is clicked -

i have button on website when clicked, reveals map. button can seen when page first loads up, when clicked, section holding map slides open , goes out of screen since page loads @ top (normal). want page scroll down bottom of div select when button pushed, if map out of screen. if page scrolled down, , clicks show map button, don't want page jump bottom of map. i tried figure out myself, no luck. seasoned jquery coders able give me guidance? many thanks! map = mapdiv.gmap3("get"); infobox = new infobox({ pixeloffset: new google.maps.size(-220, -310), closeboxurl: '', enableeventpropagation: true }); mapdiv.delegate('.infobox .close','click',function () { infobox.close(); }); jquery(".slidingdiv").hide(); jquery(".show_hide").show(); jquery('.show_hide').click(function(){ lastcenter=map.getcenter(); jquery(".slidingdiv&quo
Read more

javascript - Highcharts multi-color line -

Image
i looking create highchart multi-colored line. if goes down under value, become red, , when comes on value, become green . here picture example: or maybe highcharts have other charts models differentiate high or low level color? you can achieve coloring using lineargradient coloring: color: { lineargradient: { x1: 0, x2: 0, y1: 0, y2: 1 }, stops: [ [0, 'red'], [0.25, 'yellow'], [0.50, 'green'], [0.75, 'yellow'], [1, 'red'] ] } here 0 in stops relates minimum value of series , 1 maximum value, , in between percentages between values. if find percentages according values prior creating chart use correct stops values make relate specific values in data (at least approximately). see this jsfiddle example .
Read more

javascript - Enter key does not work in search box -

tried search guys sorry. input in search box doesnt work (or search) when hit enter when user clicks search button. doing wrong? here code. thanks. <script type="text/javascript"> $(document).ready(function() { $("#submit").click(function() { var url = "http://asla.org/awardssearch.html"; url += "?s=" + $('#googlecse').val(); window.location = url; }); $('#googlecse').keydown(function(event) { if (event.keycode == '13') { $("#submit").click(); } else { //do nothing :) } }); }); </script> <form class="navbar-form navbar-right" role="search"> <div class="search"> <input id="googlecse" type="text" onblur="if(this.value=='')this.value=this.defaultvalue;" onfocus="if(this.value==this.defaultvalue)t
Read more