OK, it's a bug. Here's a class that you can use that fixes the problem. I
didn't spend too much time testing it but the basic algorithm worked. I'll
file this too.
class FixedTree extends mx.controls.Tree
{
/**
* Returns the recommended width of the control based on its content.
You
* can calculate this width for all the contents of the control, or
* for a subset of items. This method can be quite time consuming
because
* it will measure each of the nodes in the Tree. The signature of this
method is<br>
* <pre>calculateWidth(count)</pre><br>
* <i>count</i> - Number of items to measure. This parameter is optional.
* @param count Number of nodes to measure.
*/
function calculateWidths(count)
{
if (count==undefined) count = 10000; // a hard limit on number of
nodes to measure.
var children = treeDataProvider.getChildNodes();
var idx = 0;
var len = children.length;
var curNode;
var hiddenRow =
listContent.createClassObjectWithStyles(__rowRenderer, "testRow", hiddenRowZ,
{_visible:false, owner:this, styleName:this, rowIndex:0});
hiddenRow.setSize(layoutWidth, hiddenRow.preferredHeight);
var maxW = 0;
var done=false;
var dStack = new Array();
var curCount = 0;
while (!done) {
curCount++;
curNode = children[idx];
if (curCount>count) break;
hiddenRow.setValue(curNode, "normal");
hiddenRow.setState("normal", false);
// trace("measuring " + curNode.getProperty("label")+ " " +
hiddenRow.cell._x + " " + hiddenRow.cell.getPreferredWidth());
maxW = Math.max(hiddenRow.calculateWidth(), maxW);
if (curNode.getChildNodes().length>0) {
//node has kids
if (idx+1 < len) {
dStack.push({children: children,idx: idx+1,len: len});
}
children = curNode.getChildNodes();
len = children.length;
idx = 0;
} else {
if (idx+1 < len) {
idx++;
} else if (dStack.length>0) {
var parentData = dStack.pop();
children = parentData.children;
len = parentData.len;
idx = parentData.idx;
} else {
done = true;
}
}
}
var o = getViewMetrics();
// trace(maxW + o.left + o.right);
listContent.destroyObject("testRow");
return maxW + o.left + o.right;
}
}
________________________________________
From: flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of pilby1
Sent: Tuesday, May 24, 2005 12:30 PM
To: flexcoders@yahoogroups.com
Subject: [flexcoders] Re: Tree component's calculateWidth() method, does it
work?
No, that's not the problem. I did notice how I had the missing 's'
after the fact, but in my code, it is calculateWidths(). If you would
just create a tree component and try it, you will see calculateWidths
() always returns NaN.
--- In flexcoders@yahoogroups.com, Manish Jethani
<[EMAIL PROTECTED]> wrote:
> On 5/23/05, pilby1 <[EMAIL PROTECTED]> wrote:
>
> > Checking the documentation, it seems like the method,
calculateWidth
> > (), is my answer. However, doing tree.calculateWidth() always
returns
> > NaN, making it useless.
>
> It's 'calculateWidths' (with an 's'). Could that be the problem?
________________________________________
Yahoo! Groups Links
* To visit your group on the web, go to:
http://groups.yahoo.com/group/flexcoders/
* To unsubscribe from this group, send an email to:
[EMAIL PROTECTED]
* Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Yahoo! Groups Links
<*> To visit your group on the web, go to:
http://groups.yahoo.com/group/flexcoders/
<*> To unsubscribe from this group, send an email to:
[EMAIL PROTECTED]
<*> Your use of Yahoo! Groups is subject to:
http://docs.yahoo.com/info/terms/
