java 在 JTable 中设置列的大小
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/5809143/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
提示：将鼠标放在中文语句上可以显示对应的英文。显示中英文
时间：2020-10-30 12:53:18 来源:igfitidea点击:
Set size of column in JTable
提问by Miljana
I have class that extends JTableand I have class implements TableModel, DefaultActionTableModel
我有扩展JTable 的类，我有类实现TableModel，DefaultActionTableModel
public class RingTable extends JTable {
private static final long serialVersionUID = -2828916773705542169L;
private RingTableModel model;
public RingTable () {
}
public RingTable (List<String> columns) { // NO_UCD
model = new RingTableModel(columns);
setModel(model);
}
public RingTable (List<String> columns, List<TableRing> tableRings) {
model = new RingTableModel(columns, tableRings);
setModel(model);
}
/**
* Dodaje novu vrstu u tabelu sa zadatim indeksom
* @param i
*/
public void addRow(int i) {
model.addRow(i);
}
public boolean addRow(TableRing tableRing) { // NO_UCD
return model.addRow(tableRing);
}
/**
* Uklanja vrstu iz tabele koja ima indeks kao prosledjeni parametar
* @param i
* @return
*/
private boolean removeRow(int i) {
model.removeRow(i);
return true;
}
/**
* Uklanja sleektovane vrste iz tabele
*/
public void removeSelectedRows() {
int[] indices = getSelectedRows();
Arrays.sort(indices);
removeRowSelectionInterval(0, getRowCount()-1);
for (int i = indices.length-1; i >= 0; i--)
removeRow(indices[i]);
}
/**
* Uklanja sve vrste iz tabele
*/
public void removeAllRows() { // NO_UCD
while (model.getRowCount() > 0) {
removeRow(0);
}
}
}
and
和
public class RingTableModel implements TableModel, DefaultActionTableModel {
private List<String> columns; // = new LinkedList<String>();
private List<TableRing> tableRings;
/**
*
*/
public RingTableModel() {
}
/**
*
*/
public RingTableModel(List<String> columns) {
this(columns, new LinkedList<TableRing>());
}
/**
*
*/
public RingTableModel(List<String> columns, List<TableRing> tableRings) {
this.columns = columns;
this.tableRings = tableRings;
}
/* (non-Javadoc)
* @see javax.swing.table.TableModel#addTableModelListener(javax.swing.event.TableModelListener)
*/
public void addTableModelListener(TableModelListener l) {
// TODO Auto-generated method stub
}
/* (non-Javadoc)
* @see javax.swing.table.TableModel#getColumnClass(int)
*/
public Class<?> getColumnClass(int columnIndex) {
switch (columnIndex) {
case 0: // Index
return Integer.class;
case 1: // Name
return String.class;
case 2: // Show Dampers
case 3: // Show Inputs
case 4: // Show Outputs
return Boolean.class;
case 5: // Host
return String.class;
default:
return Boolean.class;
}
}
/* (non-Javadoc)
* @see javax.swing.table.TableModel#getColumnCount()
*/
public int getColumnCount() {
return (columns!=null)?columns.size():0;
}
/* (non-Javadoc)
* @see javax.swing.table.TableModel#getColumnName(int)
*/
public String getColumnName(int columnIndex) {
if (columns == null)
return null;
if (columns.size() <= columnIndex)
return null;
if (columnIndex < 0)
return null;
return columns.get(columnIndex);
}
/* (non-Javadoc)
* @see javax.swing.table.TableModel#getRowCount()
*/
public int getRowCount() {
return (tableRings == null)?0:tableRings.size();
}
/* (non-Javadoc)
* @see javax.swing.table.TableModel#getValueAt(int, int)
*/
public Object getValueAt(int rowIndex, int columnIndex) {
if (tableRings == null)
return null;
if (rowIndex < 0 || rowIndex >= tableRings.size())
return null;
if (columnIndex < 0 || columnIndex >= columns.size())
return null;
TableRing tableRing = tableRings.get(rowIndex);
switch (columnIndex) {
case 0:
return rowIndex+1;
case 1:
return tableRing.getName();
case 2:
return tableRing.getShowDampers();
case 3:
return tableRing.getShowInputs();
case 4:
return tableRing.getShowOutputs();
case 5:
return tableRing.getHost();
default:
// TODO HARDCODE! broj kolona
// return tableRing.getTableAlarms().contains(RootData.getRootData().getEditableRingView().getTableAlarms().get(columnIndex-6));
if (tableRing.getTableAlarms().containsKey(columnIndex-RingTablePanel.COLUMN_NUMBER + 1)) {
return tableRing.getTableAlarms().get(columnIndex-RingTablePanel.COLUMN_NUMBER + 1);
}
return false;
}
}
/* (non-Javadoc)
* @see javax.swing.table.TableModel#isCellEditable(int, int)
*/
public boolean isCellEditable(int rowIndex, int columnIndex) {
switch (columnIndex) {
case 0:
return false;
case 1:
case 2:
case 3:
case 4:
case 5:
return true;
default:
return true;
}
}
/* (non-Javadoc)
* @see javax.swing.table.TableModel#removeTableModelListener(javax.swing.event.TableModelListener)
*/
public void removeTableModelListener(TableModelListener l) {
// TODO Auto-generated method stub
}
/* (non-Javadoc)
* @see javax.swing.table.TableModel#setValueAt(java.lang.Object, int, int)
*/
public void setValueAt(Object aValue, int rowIndex, int columnIndex) {
if (tableRings == null)
return ;
if (aValue == null) {
return;
}
if (rowIndex < 0 || rowIndex >= tableRings.size())
return ;
if (columnIndex < 0 || columnIndex >= columns.size())
return ;
TableRing tableRing = tableRings.get(rowIndex);
switch (columnIndex) {
case 0:
break;
case 1:
tableRing.setName((String)aValue);
break;
case 2:
tableRing.setShowDampers((Boolean)aValue);
break;
case 3:
tableRing.setShowInputs((Boolean)aValue);
break;
case 4:
tableRing.setShowOutputs((Boolean)aValue);
break;
case 5:
tableRing.setHost((String)aValue);
break;
default:
// HARDCODE! broj kolona
// TableAlarm tableAlarm = RootData.getRootData().getEditableRingView().getTableAlarms().get(columnIndex-RingTablePanel.COLUMN_NUMBER);
// if (tableAlarm != null && tableRing.getTableAlarms().containsKey(tableAlarm.getId())) {
// tableRing.getTableAlarms().remove(tableAlarm);
// } else if (tableAlarm != null && tableRing.getTableAlarms().size() < RootData.getRootData().getMaxNoOfAlarms()){
// tableRing.getTableAlarms().put(tableAlarm.getId(), true);
// } else {
// Actions.showErrorDialog(RootData.getRootData().getResource("Error.TooManyAlarms", "Too many alarms selected in ring! Maximum is:") + " " + RootData.getRootData().getMaxNoOfAlarms(), RootData.getRootData().getResource("Error.Default", "Error"));
// }
// return ;
if (tableRing.getTableAlarms().containsKey(columnIndex-RingTablePanel.COLUMN_NUMBER + 1)) {
tableRing.getTableAlarms().put(columnIndex-RingTablePanel.COLUMN_NUMBER + 1, !tableRing.getTableAlarms().get(columnIndex-RingTablePanel.COLUMN_NUMBER + 1));
} else {
tableRing.getTableAlarms().put(columnIndex-RingTablePanel.COLUMN_NUMBER + 1, true);
}
return;
}
}
// Non-interface methods
/**
* This method adds a new column to the table, if no columns were defined, a new list is created
*/
private void addColumn(String columnName) {
if (columns == null)
columns = new LinkedList<String>();
columns.add(columnName);
}
/**
* This method creates a new ring row
*
* @return <b>true</b> - always
*/
public void addRow(int i) {
tableRings.add(i, new TableRing(""));
}
public boolean addRow(TableRing tableRing) {
return tableRings.add(tableRing);
}
/**
* This method removes a single row from the table
* @param i the index of the row to be removed
*/
public void removeRow(int i) {
tableRings.remove(i);
}
public void setColumns(List<String> columns) {
this.columns = columns;
int noAlarms = RootData.getRootData().getEditableRingView().getTableAlarms().size();
for (int i=1; i<=noAlarms; i++) {
addColumn("A_" + i);
}
}
}
How to set size on 100px for columns "A_number" (A_1, A_2 ... from list ) ?
如何为“A_number”列（A_1、A_2 ...来自列表）设置 100px 的大小？
回答by jzd
From: http://download.oracle.com/javase/tutorial/uiswing/components/table.html
来自：http: //download.oracle.com/javase/tutorial/uiswing/components/table.html
To customize initial column widths, you can invoke setPreferredWidth on each of your table's columns. This sets both the preferred widths of the columns and their approximate relative widths. For example, adding the following code to SimpleTableDemo makes its third column bigger than the other columns:
要自定义初始列宽，您可以对表的每个列调用 setPreferredWidth。这将设置列的首选宽度及其近似的相对宽度。例如，将以下代码添加到 SimpleTableDemo 使其第三列大于其他列：
TableColumn column = null;
for (int i = 0; i < 5; i++) {
column = table.getColumnModel().getColumn(i);
if (i == 2) {
column.setPreferredWidth(100); //third column is bigger
} else {
column.setPreferredWidth(50);
}
}
So loop through your list of columns and set the preferred width to 100 for each of your columns that you want set.
因此，遍历您的列列表并将您要设置的每一列的首选宽度设置为 100。
