import org.eclipse.swt.widgets.ToolBar; //导入方法依赖的package包/类

protected ToolBar createToolbar() {

final ToolBar t = new ToolBar(composite, SWT.FLAT | SWT.LEFT | SWT.HORIZONTAL | SWT.WRAP);

final GridData d = new GridData(SWT.FILL, SWT.TOP, false, false);

t.setLayoutData(d);

final String unitText = computeUnitLabel();

if (!unitText.isEmpty()) {

unitItem = new ToolItem(t, SWT.READ_ONLY | SWT.FLAT);

unitItem.setText(unitText);

unitItem.setEnabled(false);

}

if (!isEditable)

return t;

final int[] codes = this.getToolItems();

for (final int i : codes) {

ToolItem item = null;

switch (i) {

case REVERT:

item = createItem(t, "Revert to original value", GamaIcons.create("small.revert").image());

break;

case PLUS:

item = createPlusItem(t);

break;

case MINUS:

item = createItem(t, "Decrement the parameter", GamaIcons.create(IGamaIcons.SMALL_MINUS).image());

break;

case EDIT:

item = createItem(t, "Edit the parameter", GamaIcons.create("small.edit").image());

break;

case INSPECT:

item = createItem(t, "Inspect the agent", GamaIcons.create("small.inspect").image());

break;

case BROWSE:

item = createItem(t, "Browse the list of agents", GamaIcons.create("small.browse").image());

break;

case CHANGE:

item = createItem(t, "Choose another agent", GamaIcons.create("small.change").image());

break;

case DEFINE:

item = createItem(t, "Set the parameter to undefined", GamaIcons.create("small.undefine").image());

}

if (item != null) {

items[i] = item;

item.addSelectionListener(new ItemSelectionListener(i));

}

}

t.layout();

t.pack();

return t;

}