| /******************************************************************************* |
| * Copyright (c) 2006, 2007 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.wst.sse.ui; |
| |
| import java.util.ResourceBundle; |
| |
| import org.eclipse.jface.action.IAction; |
| import org.eclipse.jface.action.IMenuManager; |
| import org.eclipse.jface.preference.IPreferenceStore; |
| import org.eclipse.jface.text.ITextOperationTarget; |
| import org.eclipse.jface.text.ITextViewer; |
| import org.eclipse.jface.text.source.projection.IProjectionListener; |
| import org.eclipse.jface.text.source.projection.ProjectionViewer; |
| import org.eclipse.ui.actions.ActionGroup; |
| import org.eclipse.ui.editors.text.IFoldingCommandIds; |
| import org.eclipse.ui.texteditor.ITextEditor; |
| import org.eclipse.ui.texteditor.IUpdate; |
| import org.eclipse.ui.texteditor.ResourceAction; |
| import org.eclipse.ui.texteditor.TextOperationAction; |
| import org.eclipse.wst.sse.ui.internal.SSEUIMessages; |
| import org.eclipse.wst.sse.ui.internal.SSEUIPlugin; |
| import org.eclipse.wst.sse.ui.internal.projection.IStructuredTextFoldingProvider; |
| |
| class FoldingActionGroup extends ActionGroup { |
| private static abstract class PreferenceAction extends ResourceAction implements IUpdate { |
| PreferenceAction(ResourceBundle bundle, String prefix, int style) { |
| super(bundle, prefix, style); |
| } |
| } |
| |
| private ProjectionViewer fViewer; |
| |
| private final PreferenceAction fToggle; |
| private final TextOperationAction fExpandAll; |
| private final IProjectionListener fProjectionListener; |
| private final TextOperationAction fCollapseAll; |
| |
| |
| /** |
| * Creates a new projection action group for <code>editor</code>. If |
| * the supplied viewer is not an instance of <code>ProjectionViewer</code>, |
| * the action group is disabled. |
| * |
| * @param editor |
| * the text editor to operate on |
| * @param viewer |
| * the viewer of the editor |
| */ |
| public FoldingActionGroup(final ITextEditor editor, ITextViewer viewer) { |
| if (!(viewer instanceof ProjectionViewer)) { |
| fToggle = null; |
| fExpandAll = null; |
| fCollapseAll = null; |
| fProjectionListener = null; |
| return; |
| } |
| |
| fViewer = (ProjectionViewer) viewer; |
| |
| fProjectionListener = new IProjectionListener() { |
| |
| public void projectionEnabled() { |
| update(); |
| } |
| |
| public void projectionDisabled() { |
| update(); |
| } |
| }; |
| |
| fViewer.addProjectionListener(fProjectionListener); |
| |
| fToggle = new PreferenceAction(SSEUIMessages.getResourceBundle(), "Projection_Toggle_", IAction.AS_CHECK_BOX) { //$NON-NLS-1$ |
| public void run() { |
| IPreferenceStore store = SSEUIPlugin.getDefault().getPreferenceStore(); |
| boolean current = store.getBoolean(IStructuredTextFoldingProvider.FOLDING_ENABLED); |
| store.setValue(IStructuredTextFoldingProvider.FOLDING_ENABLED, !current); |
| } |
| |
| public void update() { |
| ITextOperationTarget target = (ITextOperationTarget) editor.getAdapter(ITextOperationTarget.class); |
| |
| boolean isEnabled = (target != null && target.canDoOperation(ProjectionViewer.TOGGLE)); |
| setEnabled(isEnabled); |
| } |
| }; |
| |
| IPreferenceStore store = SSEUIPlugin.getDefault().getPreferenceStore(); |
| boolean checked = store.getBoolean(IStructuredTextFoldingProvider.FOLDING_ENABLED); |
| fToggle.setChecked(checked); |
| fToggle.setActionDefinitionId(IFoldingCommandIds.FOLDING_TOGGLE); |
| editor.setAction("FoldingToggle", fToggle); //$NON-NLS-1$ |
| |
| fExpandAll = new TextOperationAction(SSEUIMessages.getResourceBundle(), "Projection_ExpandAll_", editor, ProjectionViewer.EXPAND_ALL, true); //$NON-NLS-1$ |
| fExpandAll.setActionDefinitionId(IFoldingCommandIds.FOLDING_EXPAND_ALL); |
| editor.setAction("FoldingExpandAll", fExpandAll); //$NON-NLS-1$ |
| |
| fCollapseAll = new TextOperationAction(SSEUIMessages.getResourceBundle(), "Projection_CollapseAll_", editor, ProjectionViewer.COLLAPSE_ALL, true); //$NON-NLS-1$ |
| fCollapseAll.setActionDefinitionId(IFoldingCommandIds.FOLDING_COLLAPSE_ALL); |
| editor.setAction("FoldingCollapseAll", fCollapseAll); //$NON-NLS-1$ |
| } |
| |
| /** |
| * Returns <code>true</code> if the group is enabled. |
| * |
| * <pre> |
| * Invariant: isEnabled() <=> fViewer and all actions are != null. |
| * </pre> |
| * |
| * @return <code>true</code> if the group is enabled |
| */ |
| protected boolean isEnabled() { |
| return fViewer != null; |
| } |
| |
| /* |
| * @see org.eclipse.ui.actions.ActionGroup#dispose() |
| */ |
| public void dispose() { |
| if (isEnabled()) { |
| fViewer.removeProjectionListener(fProjectionListener); |
| fViewer = null; |
| } |
| super.dispose(); |
| } |
| |
| /** |
| * Updates the actions. |
| */ |
| protected void update() { |
| if (isEnabled()) { |
| fToggle.update(); |
| fToggle.setChecked(fViewer.isProjectionMode()); |
| fExpandAll.update(); |
| fCollapseAll.update(); |
| } |
| } |
| |
| /** |
| * Fills the menu with all folding actions. |
| * |
| * @param manager |
| * the menu manager for the folding submenu |
| */ |
| public void fillMenu(IMenuManager manager) { |
| if (isEnabled()) { |
| update(); |
| manager.add(fToggle); |
| manager.add(fExpandAll); |
| manager.add(fCollapseAll); |
| } |
| } |
| |
| /* |
| * @see org.eclipse.ui.actions.ActionGroup#updateActionBars() |
| */ |
| public void updateActionBars() { |
| update(); |
| } |
| } |