Java tutorial
/******************************************************************************* * Copyright (c) 2006 Sybase, Inc. 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: * Sybase, Inc. - initial API and implementation *******************************************************************************/ package org.eclipse.jst.pagedesigner.editors.palette; import java.beans.PropertyChangeEvent; import java.beans.PropertyChangeListener; import java.util.ArrayList; import java.util.Iterator; import java.util.List; import org.eclipse.gef.palette.PaletteEntry; import org.eclipse.gef.ui.palette.PaletteCustomizer; import org.eclipse.gef.ui.palette.customize.PaletteCustomizationAction; import org.eclipse.gef.ui.palette.customize.PaletteCustomizerDialog; import org.eclipse.jface.action.Action; import org.eclipse.jface.viewers.ITreeContentProvider; import org.eclipse.jface.viewers.TreeViewer; import org.eclipse.jface.viewers.Viewer; import org.eclipse.jst.jsf.common.ui.internal.utils.PluginImageHelper; import org.eclipse.jst.pagedesigner.PDPlugin; import org.eclipse.jst.pagedesigner.editors.pagedesigner.PageDesignerResources; import org.eclipse.jst.pagedesigner.editors.palette.impl.PaletteItemManager; import org.eclipse.jst.pagedesigner.editors.palette.impl.TaglibPaletteDrawer; import org.eclipse.swt.widgets.Button; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.FileDialog; import org.eclipse.swt.widgets.Shell; /** * Customization dialog for Web Page Designer palette items * @author mengbo * @version 1.5 */ public class DesignerPaletteCustomizerDialog extends PaletteCustomizerDialog { private static final String DEFAULT_CUSTOMIZATIONS_EXPORT_FILENAME = "WPDPaletteCustomizations.xml"; //$NON-NLS-1$ private static String DEFAULTEXTENSION = ".xml";//$NON-NLS-1$ /** * Constructor * @param shell * @param customizer * @param root */ public DesignerPaletteCustomizerDialog(Shell shell, PaletteCustomizer customizer, DesignerPaletteRoot root) { super(shell, customizer, root); } private PropertyChangeListener applyButtonUpdater = new PropertyChangeListener() { public void propertyChange(PropertyChangeEvent evt) { Button applyButton = getButton(PaletteCustomizerDialog.APPLY_ID); if (applyButton == null) { return; } applyButton.setEnabled(true); } }; /* (non-Javadoc) * @see org.eclipse.jface.window.Window#open() */ public int open() { // save the current state before open // save(); return super.open(); } /* * (non-Javadoc) * * @see org.eclipse.gef.ui.palette.customize.PaletteCustomizerDialog#setActiveEntry(org.eclipse.gef.palette.PaletteEntry) */ protected void setActiveEntry(PaletteEntry entry) { //remove listener on previous entry before adding to new entry PaletteEntry pre = getSelectedPaletteEntry(); if (pre != null) { pre.removePropertyChangeListener(applyButtonUpdater); } else { getButton(APPLY_ID).setEnabled(false); } if (entry != null) entry.addPropertyChangeListener(applyButtonUpdater); super.setActiveEntry(entry); } /* * (non-Javadoc) * * @see org.eclipse.gef.ui.palette.customize.PaletteCustomizerDialog#save() */ protected void save() { super.save(); Button applyButton = getButton(PaletteCustomizerDialog.APPLY_ID); if (applyButton != null) { applyButton.setEnabled(false); } } /* (non-Javadoc) * @see org.eclipse.gef.ui.palette.customize.PaletteCustomizerDialog#createButtonsForButtonBar(org.eclipse.swt.widgets.Composite) */ protected void createButtonsForButtonBar(Composite parent) { super.createButtonsForButtonBar(parent); getButton(APPLY_ID).setEnabled(false); // save(); } /* (non-Javadoc) * Export action * */ private class ExportAction extends PaletteCustomizationAction { /** * Constructor */ public ExportAction() { setEnabled(true); setText(PageDesignerResources.getInstance().getString("DesignerPaletteCustomizerDialog.label.export")); //$NON-NLS-1$ setImageDescriptor(PluginImageHelper.getInstance() .getImageDescriptor(DesignerPaletteImages.IMG_ELCL_EXPORT, PDPlugin.getPluginId())); setDisabledImageDescriptor(PluginImageHelper.getInstance() .getImageDescriptor(DesignerPaletteImages.IMG_DLCL_EXPORT, PDPlugin.getPluginId())); setHoverImageDescriptor(PluginImageHelper.getInstance() .getImageDescriptor(DesignerPaletteImages.IMG_CLCL_EXPORT, PDPlugin.getPluginId())); } private void handleExport() { final FileDialog fileDialog = new FileDialog(PDPlugin.getActiveWorkbenchShell()); fileDialog.setFileName(DEFAULT_CUSTOMIZATIONS_EXPORT_FILENAME); String[] filterExtensions = new String[2]; filterExtensions[0] = "*.xml"; //$NON-NLS-1$ filterExtensions[1] = "*.*"; //$NON-NLS-1$ fileDialog.setFilterExtensions(filterExtensions); fileDialog.setText(Messages.DesignerPaletteCustomizerDialog_ExportCustomizations); String filename = fileDialog.open(); if (filename != null) { if (!filename.endsWith(DEFAULTEXTENSION)) { filename = filename + DEFAULTEXTENSION; } final IPaletteContext context = PaletteItemManager .createPaletteContext(((DesignerPaletteRoot) getPaletteRoot()).getFile()); DesignerPaletteCustomizationsHelper.exportCustomizations(PaletteItemManager.getInstance(context), filename); updateActions(); } } /* (non-Javadoc) * @see org.eclipse.jface.action.Action#run() */ public void run() { handleExport(); } /* (non-Javadoc) * @see org.eclipse.gef.ui.palette.customize.PaletteCustomizationAction#update() */ public void update() { //boolean enabled = false; // PaletteEntry entry = getSelectedPaletteEntry(); // if (entry != null) { // if (getCustomizer() instanceof DesignerPaletteCustomizer) // enabled = ((DesignerPaletteCustomizer) // getCustomizer()).canExport(entry); // } setEnabled(true); } } /* (non-Javadoc) * Import action */ private class ImportAction extends PaletteCustomizationAction { private DesignerPaletteCustomizerDialog designerPaletteCustomizerDialog; /** * Constructor * @param designerPaletteCustomizerDialog */ public ImportAction(DesignerPaletteCustomizerDialog designerPaletteCustomizerDialog) { super(); this.designerPaletteCustomizerDialog = designerPaletteCustomizerDialog; setEnabled(true); setText(PageDesignerResources.getInstance().getString("DesignerPaletteCustomizerDialog.label.import")); //$NON-NLS-1$ setImageDescriptor(PluginImageHelper.getInstance() .getImageDescriptor(DesignerPaletteImages.IMG_ELCL_IMPORT, PDPlugin.getPluginId())); setDisabledImageDescriptor(PluginImageHelper.getInstance() .getImageDescriptor(DesignerPaletteImages.IMG_DLCL_IMPORT, PDPlugin.getPluginId())); setHoverImageDescriptor(PluginImageHelper.getInstance() .getImageDescriptor(DesignerPaletteImages.IMG_CLCL_IMPORT, PDPlugin.getPluginId())); } private void handleImport() { // PaletteEntry entry = designerPaletteCustomizerDialog.getSelectedPaletteEntry(); final FileDialog fileDialog = new FileDialog(PDPlugin.getActiveWorkbenchShell()); fileDialog.setFileName(DEFAULT_CUSTOMIZATIONS_EXPORT_FILENAME); String[] filterExtensions = new String[2]; filterExtensions[0] = "*.xml"; //$NON-NLS-1$ filterExtensions[1] = "*.*"; //$NON-NLS-1$ fileDialog.setFilterExtensions(filterExtensions); fileDialog.setText(Messages.DesignerPaletteCustomizerDialog_ImportCustomizations); String filename = fileDialog.open(); if (filename != null) { //deselect current entry first designerPaletteCustomizerDialog.close(); // getCustomizer().revertToSaved(); DesignerPaletteCustomizationsHelper .importCustomizations((DesignerPaletteCustomizer) getCustomizer(), filename); // designerPaletteCustomizerDialog.setActiveEntry(entry); ((DesignerPaletteCustomizer) getCustomizer()).getDesignerPaletteRoot().refresh(); designerPaletteCustomizerDialog.open(); // designerPaletteCustomizerDialog.setActiveEntry(entry); } } public void run() { handleImport(); } /* * (non-Javadoc) * * @see org.eclipse.gef.ui.palette.customize.PaletteCustomizationAction#update() */ public void update() { //nothing to do } } /** * @return import action */ public Action getImportAction() { return new ImportAction(this); } /** * @return export action */ public Action getExportAction() { return new ExportAction(); } /* (non-Javadoc) * @see org.eclipse.gef.ui.palette.customize.PaletteCustomizerDialog#createOutlineActions() */ protected List createOutlineActions() { List actions = super.createOutlineActions(); actions.remove(0);// remove new action actions.remove(0);// remove delete action actions.add(new ImportAction(this)); actions.add(new ExportAction()); return actions; } @Override protected TreeViewer createOutlineTreeViewer(Composite composite) { TreeViewer viewer = super.createOutlineTreeViewer(composite); viewer.setContentProvider(new DesignerPaletteContentProvider()); return viewer; } /** * Content provider for dialog. * Displays only {@link TaglibPaletteDrawer}s */ private static class DesignerPaletteContentProvider implements ITreeContentProvider { public Object[] getChildren(Object parentElement) { if (parentElement instanceof DesignerPaletteRoot) { List libs = new ArrayList(); List children = ((DesignerPaletteRoot) parentElement).getChildren(); if (!children.isEmpty()) { for (Iterator it = children.iterator(); it.hasNext();) { PaletteEntry entry = (PaletteEntry) it.next(); if (entry instanceof TaglibPaletteDrawer) libs.add(entry); } if (!libs.isEmpty()) return libs.toArray(); } } return null; } /* (non-Javadoc) * @see org.eclipse.jface.viewers.ITreeContentProvider#getParent(java.lang.Object) */ public Object getParent(Object element) { return ((PaletteEntry) element).getParent(); } /* (non-Javadoc) * @see org.eclipse.jface.viewers.ITreeContentProvider#hasChildren(java.lang.Object) */ public boolean hasChildren(Object element) { return false; } /* (non-Javadoc) * @see org.eclipse.jface.viewers.IStructuredContentProvider#getElements(java.lang.Object) */ public Object[] getElements(Object inputElement) { Object[] elements = new Object[0]; if (inputElement instanceof DesignerPaletteRoot) { elements = getChildren(inputElement); if (elements == null) { elements = new Object[0]; } } return elements; } /* (non-Javadoc) * @see org.eclipse.jface.viewers.IContentProvider#dispose() */ public void dispose() { //nothing to do } /* (non-Javadoc) * @see org.eclipse.jface.viewers.IContentProvider#inputChanged(org.eclipse.jface.viewers.Viewer, java.lang.Object, java.lang.Object) */ public void inputChanged(Viewer viewer, Object oldInput, Object newInput) { //won't change } } }