The other way to do this is to give _calcX a dependency method. See
for instance LzDataElementTrait#getFirstChild. Clearly whatever you
do there will have to be updated to the new dependencies-method scheme
(when we figure out what that is!). There needs to be a general, user-
extensible way to write a method that computes the dependencies for
another method for the case where the compiler's simple analysis is
insufficient.
On 2008-03-19, at 23:57 EDT, Henry Minsky wrote:
I wanted to get rid of the deprecated "applyConstraint" call in
gridtext, which looks like
- var f = function() {
- this.setAttribute("x",
this._calcX());
- }
- var d = [this, "width"];
- this.applyConstraint("x", f, d);
so I replaced it with the LZX constraint on "x"
+ x="${ this._calcX() + this.width * 0}"
which should be equivalent; it has a dependency on "width", but
multiplies it by zero, and calls the _calcX() method
which is what the original applyConstraint was doing. So this should
do the same thing as the original call to applyConstraint, right?
Index: gridtext.lzx
===================================================================
--- gridtext.lzx (revision 8323)
+++ gridtext.lzx (working copy)
@@ -66,6 +66,7 @@
<text visible="${!parent.editing}" width="${parent.width}"
resize="false"
y="${ parent.height /2 - this.height/2}"
+ x="${ this._calcX() + this.width*0}"
fgcolor="${ parent.immediateparent.selected ?
classroot._textselectedcolor:
(parent.immediateparent.highlighted ?
@@ -76,11 +77,6 @@
<handler name="oninit">
<![CDATA[
this.setAttribute('selectable',
classroot.selectable);
- var f = function() {
- this.setAttribute("x",
this._calcX());
- }
- var d = [this, "width"];
- this.applyConstraint("x", f, d);
]]>
</handler>
--
Henry Minsky
Software Architect
[EMAIL PROTECTED]
