import org.eclipse.swt.widgets.TableColumn;
/**
- * A special composite to layout columns inside a table. The composite is needed since we have
- * to layout the columns "before" the actual table gets layouted. Hence we can't use a normal
- * layout manager.
+ * A special composite to layout columns inside a table. The composite is needed
+ * since we have to layout the columns "before" the actual table gets layouted.
+ * Hence we can't use a normal layout manager.
*/
public class TableLayoutComposite extends Composite {
- private List columns= new ArrayList();
+ private List columns = new ArrayList();
/**
* Creates a new <code>TableLayoutComposite</code>.
*/
public TableLayoutComposite(Composite parent, int style) {
super(parent, style);
- addControlListener(new ControlAdapter() {
- public void controlResized(ControlEvent e) {
- Rectangle area= getClientArea();
- Table table= (Table)getChildren()[0];
- Point preferredSize= computeTableSize(table);
- int width= area.width - 2 * table.getBorderWidth();
- if (preferredSize.y > area.height) {
- // Subtract the scrollbar width from the total column width
- // if a vertical scrollbar will be required
- Point vBarSize = table.getVerticalBar().getSize();
- width -= vBarSize.x;
- }
- layoutTable(table, width, area, table.getSize().x < area.width);
- }
- });
+ addControlListener(new ControlAdapter() {
+ public void controlResized(ControlEvent e) {
+ Rectangle area = getClientArea();
+ Table table = (Table) getChildren()[0];
+ Point preferredSize = computeTableSize(table);
+ int width = area.width - 2 * table.getBorderWidth();
+ if (preferredSize.y > area.height) {
+ // Subtract the scrollbar width from the total column width
+ // if a vertical scrollbar will be required
+ Point vBarSize = table.getVerticalBar().getSize();
+ width -= vBarSize.x;
+ }
+ layoutTable(table, width, area, table.getSize().x < area.width);
+ }
+ });
}
-
+
/**
* Adds a new column of data to this table layout.
- *
- * @param data the column layout data
+ *
+ * @param data
+ * the column layout data
*/
public void addColumnData(ColumnLayoutData data) {
columns.add(data);
}
-
- //---- Helpers -------------------------------------------------------------------------------------
-
+
+ // ---- Helpers
+ // -------------------------------------------------------------------------------------
+
private Point computeTableSize(Table table) {
- Point result= table.computeSize(SWT.DEFAULT, SWT.DEFAULT);
-
- int width= 0;
- int size= columns.size();
- for (int i= 0; i < size; ++i) {
- ColumnLayoutData layoutData= (ColumnLayoutData) columns.get(i);
+ Point result = table.computeSize(SWT.DEFAULT, SWT.DEFAULT);
+
+ int width = 0;
+ int size = columns.size();
+ for (int i = 0; i < size; ++i) {
+ ColumnLayoutData layoutData = (ColumnLayoutData) columns.get(i);
if (layoutData instanceof ColumnPixelData) {
- ColumnPixelData col= (ColumnPixelData) layoutData;
+ ColumnPixelData col = (ColumnPixelData) layoutData;
width += col.width;
} else if (layoutData instanceof ColumnWeightData) {
- ColumnWeightData col= (ColumnWeightData) layoutData;
+ ColumnWeightData col = (ColumnWeightData) layoutData;
width += col.minimumWidth;
} else {
Assert.isTrue(false, "Unknown column layout data"); //$NON-NLS-1$
}
}
if (width > result.x)
- result.x= width;
+ result.x = width;
return result;
}
-
- private void layoutTable(Table table, int width, Rectangle area, boolean increase) {
+
+ private void layoutTable(Table table, int width, Rectangle area,
+ boolean increase) {
// XXX: Layout is being called with an invalid value the first time
// it is being called on Linux. This method resets the
// Layout to null so we make sure we run it only when
if (width <= 1)
return;
- TableColumn[] tableColumns= table.getColumns();
- int size= Math.min(columns.size(), tableColumns.length);
- int[] widths= new int[size];
- int fixedWidth= 0;
- int numberOfWeightColumns= 0;
- int totalWeight= 0;
+ TableColumn[] tableColumns = table.getColumns();
+ int size = Math.min(columns.size(), tableColumns.length);
+ int[] widths = new int[size];
+ int fixedWidth = 0;
+ int numberOfWeightColumns = 0;
+ int totalWeight = 0;
// First calc space occupied by fixed columns
- for (int i= 0; i < size; i++) {
- ColumnLayoutData col= (ColumnLayoutData) columns.get(i);
+ for (int i = 0; i < size; i++) {
+ ColumnLayoutData col = (ColumnLayoutData) columns.get(i);
if (col instanceof ColumnPixelData) {
- int pixels= ((ColumnPixelData) col).width;
- widths[i]= pixels;
+ int pixels = ((ColumnPixelData) col).width;
+ widths[i] = pixels;
fixedWidth += pixels;
} else if (col instanceof ColumnWeightData) {
- ColumnWeightData cw= (ColumnWeightData) col;
+ ColumnWeightData cw = (ColumnWeightData) col;
numberOfWeightColumns++;
- // first time, use the weight specified by the column data, otherwise use the actual width as the weight
- // int weight = firstTime ? cw.weight : tableColumns[i].getWidth();
- int weight= cw.weight;
+ // first time, use the weight specified by the column data,
+ // otherwise use the actual width as the weight
+ // int weight = firstTime ? cw.weight :
+ // tableColumns[i].getWidth();
+ int weight = cw.weight;
totalWeight += weight;
} else {
Assert.isTrue(false, "Unknown column layout data"); //$NON-NLS-1$
// Do we have columns that have a weight
if (numberOfWeightColumns > 0) {
// Now distribute the rest to the columns with weight.
- int rest= width - fixedWidth;
- int totalDistributed= 0;
- for (int i= 0; i < size; ++i) {
- ColumnLayoutData col= (ColumnLayoutData) columns.get(i);
+ int rest = width - fixedWidth;
+ int totalDistributed = 0;
+ for (int i = 0; i < size; ++i) {
+ ColumnLayoutData col = (ColumnLayoutData) columns.get(i);
if (col instanceof ColumnWeightData) {
- ColumnWeightData cw= (ColumnWeightData) col;
+ ColumnWeightData cw = (ColumnWeightData) col;
// calculate weight as above
- // int weight = firstTime ? cw.weight : tableColumns[i].getWidth();
- int weight= cw.weight;
- int pixels= totalWeight == 0 ? 0 : weight * rest / totalWeight;
+ // int weight = firstTime ? cw.weight :
+ // tableColumns[i].getWidth();
+ int weight = cw.weight;
+ int pixels = totalWeight == 0 ? 0 : weight * rest
+ / totalWeight;
if (pixels < cw.minimumWidth)
- pixels= cw.minimumWidth;
+ pixels = cw.minimumWidth;
totalDistributed += pixels;
- widths[i]= pixels;
+ widths[i] = pixels;
}
}
// Distribute any remaining pixels to columns with weight.
- int diff= rest - totalDistributed;
- for (int i= 0; diff > 0; ++i) {
+ int diff = rest - totalDistributed;
+ for (int i = 0; diff > 0; ++i) {
if (i == size)
- i= 0;
- ColumnLayoutData col= (ColumnLayoutData) columns.get(i);
+ i = 0;
+ ColumnLayoutData col = (ColumnLayoutData) columns.get(i);
if (col instanceof ColumnWeightData) {
++widths[i];
--diff;
}
}
}
-
+
if (increase) {
table.setSize(area.width, area.height);
}
- for (int i= 0; i < size; i++) {
+ for (int i = 0; i < size; i++) {
tableColumns[i].setWidth(widths[i]);
}
if (!increase) {
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