Java tutorial
/* ****************************************************************************** * Copyright (c) 2006-2012 XMind Ltd. and others. * * This file is a part of XMind 3. XMind releases 3 and * above are dual-licensed under the Eclipse Public License (EPL), * which is available at http://www.eclipse.org/legal/epl-v10.html * and the GNU Lesser General Public License (LGPL), * which is available at http://www.gnu.org/licenses/lgpl.html * See http://www.xmind.net/license.html for details. * * Contributors: * XMind Ltd. - initial API and implementation *******************************************************************************/ package org.xmind.ui.internal.views; import org.eclipse.jface.action.IAction; import org.eclipse.jface.resource.JFaceResources; import org.eclipse.swt.SWT; import org.eclipse.swt.layout.FillLayout; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.Button; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Control; import org.eclipse.swt.widgets.Event; import org.eclipse.swt.widgets.Listener; import org.eclipse.ui.IActionBars; import org.eclipse.ui.IEditorPart; import org.eclipse.ui.IPropertyListener; import org.eclipse.ui.actions.ActionFactory; import org.eclipse.ui.part.Page; import org.xmind.core.Core; import org.xmind.core.IMeta; import org.xmind.core.IWorkbook; import org.xmind.core.event.CoreEvent; import org.xmind.core.event.ICoreEventListener; import org.xmind.core.event.ICoreEventRegistration; import org.xmind.core.event.ICoreEventSource; import org.xmind.gef.command.Command; import org.xmind.gef.command.ICommandStack; import org.xmind.gef.ui.actions.IActionRegistry; import org.xmind.gef.ui.editor.IGraphicalEditor; import org.xmind.gef.ui.editor.IGraphicalEditorPage; import org.xmind.ui.commands.CommandMessages; import org.xmind.ui.commands.ModifyMetadataCommand; import org.xmind.ui.internal.MindMapMessages; import org.xmind.ui.resources.FontUtils; import org.xmind.ui.tabfolder.PageBookPage; public class WorkbookRevisionsPage extends PageBookPage implements ICoreEventListener, Listener, IPropertyListener { private static final String K_AUTO_SAVE = IMeta.CONFIG_AUTO_REVISION_GENERATION; private static final String V_YES = IMeta.V_YES; private static final String V_NO = IMeta.V_NO; private Button autoSaveOption = null; private IWorkbook workbook; private ICoreEventRegistration coreEventReg = null; private Composite container; /** * */ public WorkbookRevisionsPage(IGraphicalEditor editor) { super(editor); this.workbook = (IWorkbook) editor.getAdapter(IWorkbook.class); } public IGraphicalEditor getEditor() { return (IGraphicalEditor) super.getSourcePageProvider(); } /* * (non-Javadoc) * * @see * org.xmind.ui.tabfolder.PageBookPage#createControl(org.eclipse.swt.widgets * .Composite) */ @Override public void createControl(Composite parent) { container = new Composite(parent, SWT.NONE); GridLayout gridLayout = new GridLayout(1, false); gridLayout.marginWidth = 0; gridLayout.marginHeight = 0; gridLayout.verticalSpacing = 0; gridLayout.horizontalSpacing = 0; container.setLayout(gridLayout); Composite contentContainer = new Composite(container, SWT.NONE); contentContainer.setLayout(new FillLayout()); GridData contentLayoutData = new GridData(SWT.FILL, SWT.FILL, true, true); contentLayoutData.widthHint = SWT.DEFAULT; contentLayoutData.heightHint = SWT.DEFAULT; contentContainer.setLayoutData(contentLayoutData); super.createControl(contentContainer); Composite optionContainer = new Composite(container, SWT.NONE); GridLayout optionLayout = new GridLayout(1, false); optionLayout.marginWidth = 5; optionLayout.marginHeight = 5; optionLayout.verticalSpacing = 5; optionLayout.horizontalSpacing = 5; optionContainer.setLayout(optionLayout); GridData optionLayoutData = new GridData(SWT.FILL, SWT.FILL, true, false); optionLayoutData.widthHint = SWT.DEFAULT; optionLayoutData.heightHint = SWT.DEFAULT; optionContainer.setLayoutData(optionLayoutData); fillOptions(optionContainer); handleWorkbookChange(); getEditor().addPropertyListener(this); autoSaveOption.addListener(SWT.Selection, this); } /* * (non-Javadoc) * * @see org.xmind.ui.tabfolder.PageBookPage#getControl() */ @Override public Control getControl() { return container; } /* * (non-Javadoc) * * @see org.xmind.ui.tabfolder.PageBookPage#dispose() */ @Override public void dispose() { getEditor().removePropertyListener(this); if (coreEventReg != null) { coreEventReg.unregister(); coreEventReg = null; } super.dispose(); } private void fillOptions(Composite parent) { // titleLabel = new Label(parent, SWT.NONE); // titleLabel.setFont(FontUtils.getNewHeight(JFaceResources.DEFAULT_FONT, // 11)); // GridData layoutData = new GridData(SWT.FILL, SWT.FILL, true, false); // titleLabel.setLayoutData(layoutData); autoSaveOption = new Button(parent, SWT.CHECK | SWT.WRAP); autoSaveOption.setFont(FontUtils.getNewHeight(JFaceResources.DEFAULT_FONT, -1)); autoSaveOption.setText(MindMapMessages.WorkbookRevisionsPage_AutoSaveRevisionsCheck_text); autoSaveOption.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, false)); } /* * (non-Javadoc) * * @see * org.xmind.ui.tabfolder.PageBookPage#createDefaultPage(org.eclipse.swt * .widgets.Composite) */ @Override protected Control createDefaultPage(Composite parent) { return new Composite(parent, SWT.NONE); } /* * (non-Javadoc) * * @see * org.xmind.ui.tabfolder.PageBookPage#doCreateNestedPage(java.lang.Object) */ @Override protected Page doCreateNestedPage(Object sourcePage) { return new RevisionsPage((IGraphicalEditorPage) sourcePage); } /* * (non-Javadoc) * * @see org.xmind.ui.tabfolder.PageBookPage#refreshGlobalActionHandlers() */ @Override protected void refreshGlobalActionHandlers() { super.refreshGlobalActionHandlers(); // Set new actions from editor. IActionRegistry registry = (IActionRegistry) getEditor().getAdapter(IActionRegistry.class); if (registry != null) { initGlobalActionHandlers(getSite().getActionBars(), registry); } } protected void initGlobalActionHandlers(IActionBars bars, IActionRegistry registry) { setGlobalActionHandler(bars, registry, ActionFactory.UNDO.getId()); setGlobalActionHandler(bars, registry, ActionFactory.REDO.getId()); } protected void setGlobalActionHandler(IActionBars bars, IActionRegistry registry, String actionId) { IAction action = registry.getAction(actionId); if (action != null) { bars.setGlobalActionHandler(actionId, action); } } /* * (non-Javadoc) * * @see * org.xmind.core.event.ICoreEventListener#handleCoreEvent(org.xmind.core * .event.CoreEvent) */ public void handleCoreEvent(CoreEvent event) { if (getControl() == null || getControl().isDisposed()) return; if (K_AUTO_SAVE.equals(event.getTarget())) { getControl().getDisplay().asyncExec(new Runnable() { public void run() { updateAutoSaveOption(); } }); } } /** * */ private void updateAutoSaveOption() { if (workbook != null) { autoSaveOption.setEnabled(true); autoSaveOption.setSelection(isAutoSave(workbook)); } else { autoSaveOption.setEnabled(false); } } private static final boolean isAutoSave(IWorkbook workbook) { String value = workbook.getMeta().getValue(K_AUTO_SAVE); return value == null || V_YES.equalsIgnoreCase(value); } /* * (non-Javadoc) * * @see * org.eclipse.swt.widgets.Listener#handleEvent(org.eclipse.swt.widgets. * Event) */ public void handleEvent(Event event) { if (event.type == SWT.Selection) { boolean selection = ((Button) event.widget).getSelection(); Command command = new ModifyMetadataCommand(workbook, K_AUTO_SAVE, selection ? V_YES : V_NO); command.setLabel(selection ? CommandMessages.Command_TurnOnAutoRevisionSaving : CommandMessages.Command_TurnOffAutoRevisionSaving); ICommandStack commandStack = getEditor().getCommandStack(); if (commandStack != null) { commandStack.execute(command); } else { command.execute(); } } } /* * (non-Javadoc) * * @see org.eclipse.ui.IPropertyListener#propertyChanged(java.lang.Object, * int) */ public void propertyChanged(Object source, int propId) { if (propId == IEditorPart.PROP_INPUT) { handleWorkbookChange(); } } private void handleWorkbookChange() { if (coreEventReg != null) { coreEventReg.unregister(); coreEventReg = null; } workbook = (IWorkbook) getEditor().getAdapter(IWorkbook.class); if (workbook != null) { IMeta meta = workbook.getMeta(); if (meta instanceof ICoreEventSource) { coreEventReg = ((ICoreEventSource) meta).registerCoreEventListener(Core.Metadata, this); } } updateAutoSaveOption(); } }