| package org.eclipse.ui.internal; |
| /* |
| * (c) Copyright IBM Corp. 2000, 2001. |
| * All Rights Reserved. |
| */ |
| import org.eclipse.swt.SWT; |
| import org.eclipse.swt.widgets.Table; |
| import org.eclipse.swt.widgets.TableItem; |
| |
| import org.eclipse.ui.*; |
| import org.eclipse.ui.help.WorkbenchHelp; |
| import org.eclipse.ui.internal.dialogs.PerspLabelProvider; |
| /** |
| * Implements a action to enable the user switch between perspectives |
| * using keyboard. |
| */ |
| public class CyclePerspectiveAction extends CyclePartAction { |
| private PerspLabelProvider labelProvider = new PerspLabelProvider(false);; |
| /** |
| * Creates a CyclePerspectiveAction. |
| */ |
| protected CyclePerspectiveAction(IWorkbenchWindow window, boolean forward) { |
| super(window,forward); //$NON-NLS-1$ |
| window.addPerspectiveListener(new IPerspectiveListener() { |
| public void perspectiveActivated(IWorkbenchPage page, IPerspectiveDescriptor perspective) { |
| updateState(); |
| } |
| public void perspectiveChanged(IWorkbenchPage page, IPerspectiveDescriptor perspective, String changeId) {} |
| }); |
| updateState(); |
| } |
| |
| protected void setText() { |
| // TBD: Remove text and tooltip when this becomes an invisible action. |
| if (forward) { |
| setText(WorkbenchMessages.getString("CyclePerspectiveAction.next.text")); //$NON-NLS-1$ |
| setToolTipText(WorkbenchMessages.getString("CyclePerspectiveAction.next.toolTip")); //$NON-NLS-1$ |
| WorkbenchHelp.setHelp(this, IHelpContextIds.CYCLE_PERSPECTIVE_FORWARD_ACTION); |
| } |
| else { |
| setText(WorkbenchMessages.getString("CyclePerspectiveAction.prev.text")); //$NON-NLS-1$ |
| setToolTipText(WorkbenchMessages.getString("CyclePerspectiveAction.prev.toolTip")); //$NON-NLS-1$ |
| WorkbenchHelp.setHelp(this, IHelpContextIds.CYCLE_PERSPECTIVE_BACKWARD_ACTION); |
| } |
| } |
| /** |
| * Dispose the resources cached by this action. |
| */ |
| protected void dispose() { |
| labelProvider.dispose(); |
| } |
| /** |
| * Activate the selected item. |
| */ |
| public void activate(IWorkbenchPage page, Object selection) { |
| if (selection != null) { |
| IPerspectiveDescriptor persp = (IPerspectiveDescriptor)selection; |
| page.setPerspective(persp); |
| } |
| } |
| /** |
| * Updates the enabled state. |
| */ |
| public void updateState() { |
| WorkbenchPage page = (WorkbenchPage) getActivePage(); |
| if (page == null) { |
| setEnabled(false); |
| return; |
| } |
| // enable iff there is at least one other editor to switch to |
| setEnabled(page.getSortedPerspectives().length >= 1); |
| } |
| |
| /** |
| * Add all views to the dialog in the activation order |
| */ |
| protected void addItems(Table table,WorkbenchPage page) { |
| IPerspectiveDescriptor perspectives[] = page.getSortedPerspectives(); |
| for (int i = perspectives.length - 1; i >= 0 ; i--) { |
| TableItem item = new TableItem(table,SWT.NONE); |
| IPerspectiveDescriptor desc = perspectives[i]; |
| item.setText(labelProvider.getText(desc)); |
| item.setImage(labelProvider.getImage(desc)); |
| item.setData(desc); |
| } |
| } |
| /** |
| * Returns the string which will be shown in the table header. |
| */ |
| protected String getTableHeader() { |
| return WorkbenchMessages.getString("CyclePerspectiveAction.header"); //$NON-NLS-1$ |
| } |
| } |