org.eclipse.ui.forms.widgets
Interface ILayoutExtension
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All Known Implementing Classes:
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ColumnLayout,
TableWrapLayout
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public interface ILayoutExtension
Classes that extend abstract class Layout and implement this interface can
take part in layout computation of the TableWrapLayout manager. This layout
uses alternative algorithm that computes columns before rows. It allows it
to 'flow' wrapped text proportionally (similar to the way web browser
renders tables). Custom layout managers that implement this interface will
allow TableWrapLayout to properly compute width hint to pass.
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Since:
- 3.0
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See Also:
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TableWrapLayout
,
ColumnLayout
computeMinimumWidth
int computeMinimumWidth(
Composite parent,
boolean changed)
- Computes the minimum width of the parent. All widgets capable of word
wrapping should return the width of the longest word that cannot be
broken any further.
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Parameters:
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parent
- the parent composite -
changed
- true
if the cached information should be
flushed, false
otherwise.
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Returns:
- the minimum width of the parent composite
computeMaximumWidth
int computeMaximumWidth(
Composite parent,
boolean changed)
- Computes the maximum width of the parent. All widgets capable of word
wrapping should return the length of the entire text with wrapping
turned off.
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Parameters:
-
parent
- the parent composite -
changed
- true
if the cached information
should be flushed, false
otherwise.
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Returns:
- the maximum width of the parent composite
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