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Height of droplist adjustable [message #406606]

Fri, 26 January 2007 08:11

Ronald
Messages: 68
Registered: July 2009

Member

Hi all,

Just a minor thing, which would life make a little easier though.
Is it possible to increase / set the number of items visible in a drop list
of the properties view?
Now, only 4 or 5 items are visible at the same time, but I'd like to
increase that to 10 or more.

Is there a reason for displaying only a few items at once?

I suppose somewhere a drop list JFace (?) thing is created somewhere, where
the height is set, but I can't find it.
And is it changeable by either setting a property somewhere or by inheriting
a certain class?

btw, I'm still using emf 2.2.0 v200605231736. I guess I should update one of
these days.

TIA
Ronald

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Re: Height of droplist adjustable [message #406607 is a reply to message #406606]

Fri, 26 January 2007 10:21

Ed Merks
Messages: 25226
Registered: July 2009

Senior Member

This is a multi-part message in MIME format.
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Content-Transfer-Encoding: 7bit

Ronald,

I think you'd need to create a specialized version of PropertyDescriptor
(as for when you want a customized cell editor) and use it to create a
specialized version of ExtendedComboBoxCellEditor that uses this method
of CCombo to set the number of visible items:

/**
* Sets the number of items that are visible in the drop
* down portion of the receiver's list.
*
* @param count the new number of items to be visible
*
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the
thread that created the receiver</li>
* </ul>
*
* @since 3.0
*/
public void setVisibleItemCount (int count) {
checkWidget ();
if (count < 0) return;
visibleItemCount = count;
}

I think you'd need to override createControl to have access to the
CCombo control because comboBox is a package protected field; getControl
should return it after createControl creates it and sets it, but you
need to cast in either case. Perhaps we can make this easier to control
somehow...

Ronald wrote:
> Hi all,
>
> Just a minor thing, which would life make a little easier though.
> Is it possible to increase / set the number of items visible in a drop list
> of the properties view?
> Now, only 4 or 5 items are visible at the same time, but I'd like to
> increase that to 10 or more.
>
> Is there a reason for displaying only a few items at once?
>
> I suppose somewhere a drop list JFace (?) thing is created somewhere, where
> the height is set, but I can't find it.
> And is it changeable by either setting a property somewhere or by inheriting
> a certain class?
>
> btw, I'm still using emf 2.2.0 v200605231736. I guess I should update one of
> these days.
>
> TIA
> Ronald
>
>
>

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Content-Transfer-Encoding: 7bit

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<meta content="text/html;charset=ISO-8859-1" http-equiv="Content-Type">
<title></title>
</head>
<body bgcolor="#ffffff" text="#000000">
Ronald, 
 
I think you'd need to create a specialized version of
PropertyDescriptor (as for when you want a customized cell editor) and
use it to create a specialized version of ExtendedComboBoxCellEditor
that uses this method of CCombo to set the number of visible items: 
<blockquote>/** 
 * Sets the number of items that are visible in the drop 
 * down portion of the receiver's list. 
 * 
 * @param count the new number of items to be visible 
 * 
 * @exception SWTException <ul> 
 *    <li>ERROR_WIDGET_DISPOSED - if the receiver has
been disposed</li> 
 *    <li>ERROR_THREAD_INVALID_ACCESS - if not called
from the thread that created the receiver</li> 
 * </ul> 
 * 
 * @since 3.0 
 */ 
public void setVisibleItemCount (int count) { 
    checkWidget (); 
    if (count < 0) return; 
    visibleItemCount = count; 
} 
</blockquote>
I think you'd need to override createControl to have access to the
CCombo control because comboBox is a package protected field;
getControl should return it after createControl creates it and sets it,
but you need to cast in either case.  Perhaps we can make this easier
to control somehow... 
 
 
Ronald wrote:
<blockquote cite="midepcumf$39m$1@utils.eclipse.org" type="cite">
<pre wrap="">Hi all,

Just a minor thing, which would life make a little easier though.
Is it possible to increase / set the number of items visible in a drop list
of the properties view?
Now, only 4 or 5 items are visible at the same time, but I'd like to
increase that to 10 or more.

Is there a reason for displaying only a few items at once?

I suppose somewhere a drop list JFace (?) thing is created somewhere, where
the height is set, but I can't find it.
And is it changeable by either setting a property somewhere or by inheriting
a certain class?

btw, I'm still using emf 2.2.0 v200605231736. I guess I should update one of
these days.

TIA
Ronald

</pre>
</blockquote>
 
</body>
</html>

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