Help/GUI/SimpleController.html

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  34 <p class="p1"><b>SimpleController</b></p>
  35 <p class="p2"><br></p>
  36 <p class="p3">SimpleController can be used as a controller according to the model-view-controller (M-V-C) paradigm. It provides an <a href="../Collections/IdentityDictionary.html"><span class="s1">IdentityDictionary</span></a> of actions, which are called whenever the attached model sends a notification by calling <b>changed</b>.</p>
  37 <p class="p4"><br></p>
  38 <p class="p5"><br></p>
  39 <p class="p6"><b>Class Methods</b></p>
  40 <p class="p7"><br></p>
  41 <p class="p8"><b><span class="Apple-tab-span">  </span>*new(model)</b></p>
  42 <p class="p9"><b><span class="Apple-tab-span">  </span><span class="Apple-tab-span">    </span></b></p>
  43 <p class="p8"><b><span class="Apple-tab-span">  </span><span class="Apple-tab-span">    </span></b>Creates a SimpleController instance with the <b>model</b> to be observed. <b>Model</b> can an object of any class</p>
  44 <p class="p9"><br></p>
  45 <p class="p6"><b>Instance Methods</b></p>
  46 <p class="p2"><br></p>
  47 <p class="p8"><span class="Apple-tab-span">     </span><b>put(what, action)</b></p>
  48 <p class="p9"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span></p>
  49 <p class="p8"><span class="Apple-tab-span">     </span><span class="Apple-tab-span">    </span>Register an action, which is called when the model invokes <b>changed(what, moreArgs)</b>.</p>
  50 <p class="p9"><span class="Apple-tab-span">     </span></p>
  51 <p class="p9"><br></p>
  52 <p class="p10"><b>Examples:</b></p>
  53 <p class="p11"><br></p>
  54 <p class="p12">(</p>
  55 <p class="p12"><span class="Apple-tab-span">    </span><span class="s2">var</span> controller, model, view;</p>
  56 <p class="p13"><span class="Apple-tab-span">    </span></p>
  57 <p class="p12"><span class="Apple-tab-span">    </span>model = <span class="s2">Ref</span>(0.5);</p>
  58 <p class="p12"><span class="Apple-tab-span">    </span>controller = <span class="s2">SimpleController</span>(model);</p>
  59 <p class="p12"><span class="Apple-tab-span">    </span>controller.put(<span class="s3">\value</span>,<span class="Apple-converted-space"> </span></p>
  60 <p class="p14"><span class="s4"><span class="Apple-tab-span">   </span><span class="Apple-tab-span">    </span>{</span>|theChanger, what, moreArgs|<span class="s4"><span class="Apple-converted-space"> </span></span></p>
  61 <p class="p12"><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span>view.value_(theChanger.value);</p>
  62 <p class="p12"><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span>});</p>
  63 <p class="p13"><span class="Apple-tab-span">    </span></p>
  64 <p class="p12"><span class="Apple-tab-span">    </span>view = <span class="s2">Slider</span>(<span class="s2">Window</span>(<span class="s5">"slider"</span>, <span class="s2">Rect</span>(100, 100, 330, 38)).front, <span class="s2">Rect</span>(5, 5, 320, 20));</p>
  65 <p class="p12"><span class="Apple-tab-span">    </span>view.onClose_{controller.remove};</p>
  66 <p class="p13"><span class="Apple-tab-span">    </span></p>
  67 <p class="p15"><span class="s4"><span class="Apple-tab-span">   </span></span>// run a routine to change the model's value:</p>
  68 <p class="p12"><span class="Apple-tab-span">    </span>r{</p>
  69 <p class="p12"><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span>100.do{</p>
  70 <p class="p12"><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span>model.value_(1.0.rand.postln).changed(<span class="s3">\value</span>);</p>
  71 <p class="p12"><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span>0.5.wait;</p>
  72 <p class="p12"><span class="Apple-tab-span">    </span><span class="Apple-tab-span">    </span>}</p>
  73 <p class="p12"><span class="Apple-tab-span">    </span>}.play(<span class="s2">AppClock</span>)</p>
  74 <p class="p12">)</p>
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