Hi Phil,
the getTrait and setTrait methods are used by shapes, not morphs. All
instance variables of morphs are persistent a priori. I modified your
test code a bit:
Morph.subclass("MyPersistedMorph", {
handlesMouseDown : Functions.True,
initialize : function($super) {
console.log('PersistedMorph.initialize');
$super(new lively.scene.Rectangle(new Rectangle(100, 100, 200,
200)));
this.setFill(Color.green);
console.log('PersistedMorph.initialize weight: ' + this.weight); //
will always be undefined because
//
initialize isn't called for deserialization
},
onDeserialize: function() {
console.log('PersistedMorph.onDeserialize weight: ' +
this.weight); // This works
},
onMouseDown : function($super, event) {
console.log('PersistedMorph.onMouseDown');
console.log('PersistedMorph.onMouseDown weight: ' +
this.weight);
this.weight = 100;
return true;
}
});
Robert
On Mar 3, 2009, at 11:18 PM, Philip Weaver wrote:
I struggled with a very simple yet important subject and I just want
to post a possible solution here. I wanted to persist some simple
values when one of my morph instances was persisted. I am not using
the Widgets class at this time. My goal is persist some layout
constraints on a morph.
The Morph class does extend from lively.data.Wrapper.
lively.data.Wrapper provides methods for setTrait and getTrait which
do store and restore automatically when a Morph is serialized and
deserialized.
Another approach may be to use models. Because I'm not really yet
using the Widgets class I don't really have models working yet.
There appears to be no documentation yet for using models except for
Examples.js.
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