Package uk.ac.starlink.topcat
Class MetaColumnTableSorter
- java.lang.Object
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- uk.ac.starlink.topcat.MetaColumnTableSorter
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public class MetaColumnTableSorter extends java.lang.Object
Handles the GUI aspects of sorting a MetaColumnTableModel. It provides the mouse listeners that set up sorting and ensures that the sorting methods are called on the table model as required to keep the row order up to date.- Since:
- 15 Aug 2017
- Author:
- Mark Taylor
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Constructor Summary
Constructors Constructor Description MetaColumnTableSorter(MetaColumnTableModel model)
Constructor.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description int
getSortIndex()
Returns the index of the column on which sorting is in effect.javax.swing.JComponent
getUnsortLabel()
Returns a component that will display an indication of when the natural (unsorted) sequence is in use.void
install(javax.swing.table.JTableHeader header)
Sets this object up to allow sorting its model by clicking on a given JTable header.boolean
isDescending()
Returns sort sense.void
setSorting(int icol, boolean descending)
Instructs this sorter to keep the table model sorted according to a given column.
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Constructor Detail
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MetaColumnTableSorter
public MetaColumnTableSorter(MetaColumnTableModel model)
Constructor.- Parameters:
model
- the model whose sorting this sorter orchestrates
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Method Detail
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install
public void install(javax.swing.table.JTableHeader header)
Sets this object up to allow sorting its model by clicking on a given JTable header. Currently only one header can be installed at a time. You can uninstall it by calling this method with a null argument.- Parameters:
header
- table header component
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getUnsortLabel
public javax.swing.JComponent getUnsortLabel()
Returns a component that will display an indication of when the natural (unsorted) sequence is in use. Clicking on this component will cause natural order to resume.- Returns:
- small label indicating unsortedness
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setSorting
public void setSorting(int icol, boolean descending)
Instructs this sorter to keep the table model sorted according to a given column. If no sort order is defined for the requested column, nothing happens.- Parameters:
icol
- sort column index, or -1 for no sortingdescending
- true for descending sequence, false for ascending; ignored for no sort column
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getSortIndex
public int getSortIndex()
Returns the index of the column on which sorting is in effect.- Returns:
- index of column in this sorter's table model on which sorting is being performed, or -1 for natural order
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isDescending
public boolean isDescending()
Returns sort sense. Irrelevant if no sort column.- Returns:
- true for descending, false for ascending
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