Java tutorial
/******************************************************************************* * Copyright (c) 2007 Exadel, Inc. and Red Hat, Inc. * Distributed under license by Red Hat, Inc. All rights reserved. * This program is 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: * Exadel, Inc. and Red Hat, Inc. - initial API and implementation ******************************************************************************/ package org.jboss.tools.vpe.ui.palette; import java.net.URL; import java.net.MalformedURLException; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Control; import org.eclipse.ui.IActionBars; import org.eclipse.jface.action.Action; import org.eclipse.jface.resource.ImageDescriptor; import org.eclipse.core.runtime.Platform; import org.jboss.tools.common.model.XModel; import org.jboss.tools.common.model.XModelObject; import org.jboss.tools.common.model.event.XModelTreeEvent; import org.jboss.tools.common.model.event.XModelTreeListener; import org.jboss.tools.common.model.util.EclipseResourceUtil; import org.jboss.tools.common.model.ui.ModelUIPlugin; import org.jboss.tools.common.model.ui.views.palette.IPaletteAdapter; import org.jboss.tools.common.model.ui.views.palette.IPalettePageAdapter; import org.jboss.tools.common.model.ui.views.palette.PaletteContents; import org.jboss.tools.common.model.ui.views.palette.PaletteViewPart; import org.jboss.tools.vpe.ui.palette.model.PaletteModel; import org.jboss.tools.vpe.ui.palette.model.PaletteRoot; import org.jboss.tools.vpe.ui.palette.PaletteUIMessages; public class PaletteAdapter implements IPaletteAdapter { private static final URL BASE_URL = EclipseResourceUtil .getInstallURL(Platform.getBundle(ModelUIPlugin.PLUGIN_ID)); private static final String IMAGE_PATH = "images/xstudio/palette/"; //$NON-NLS-1$ private IPalettePageAdapter viewPart = null; private PaletteModel model = null; private PaletteViewer viewer = null; private Control palette = null; private DescriptionManager descriptionManager = null; private DropTargetManager dropManager = null; private PaletteModelListener modelListener = null; private PaletteContents paletteContents; public void setPaletteViewPart(IPalettePageAdapter viewPart) { this.viewPart = viewPart; } public void initActionBars() { IActionBars bars = viewPart.getActionBars(); if (bars != null) { bars.getToolBarManager().add(new PaletteEditAction()); bars.getToolBarManager().add(new ShowHideTabsAction()); bars.getToolBarManager().add(new ImportTLDAction()); } } public Control createControl(Composite root) { model = PaletteModel.getInstance(paletteContents); viewer = new PaletteViewer(viewPart); palette = viewer.createControl(root); viewer.setPaletteViewerPreferences(new PaletteViewerPreferences()); PaletteRoot paletteRoot = model.getPaletteRoot(); viewer.setPaletteRoot(paletteRoot); // initActionBars(); descriptionManager = new DescriptionManager(viewer); descriptionManager.install(palette); dropManager = new DropTargetManager(viewer, model); dropManager.install(palette); modelListener = new PaletteModelListener(); model.addModelTreeListener(modelListener); viewer.addDragStartSupport(); return palette; } public void setEnabled(boolean enabled) { if (viewer != null) { viewer.setEnabled(enabled); } } public void dispose() { model.removeModelTreeListener(modelListener); dropManager.dispose(); descriptionManager.dispose(); viewPart.getActionBars().getToolBarManager().removeAll(); viewer = null; viewPart = null; } public void setPaletteContents(PaletteContents contents) { paletteContents = contents; if (model != null) { model.setPaletteContents(contents); } } private void reload(XModelObject lastAddedXCat) { if (viewer != null) { viewer.deselectAll(); } model.load(lastAddedXCat); setEnabled(true); /// setEnabled(viewPart.idEnabled()); } private ImageDescriptor getImageDescriptor(String fileName) { try { URL url = new URL(BASE_URL, IMAGE_PATH + fileName); return ImageDescriptor.createFromURL(url); } catch (MalformedURLException e) { PalettePlugin.getPluginLog().logError(e); } return ImageDescriptor.getMissingImageDescriptor(); } private class PaletteEditAction extends Action { public PaletteEditAction() { super(PaletteUIMessages.PALETTE_EDITOR, PaletteAdapter.this.getImageDescriptor("palette_editor.gif")); //$NON-NLS-1$ setToolTipText(PaletteUIMessages.PALETTE_EDITOR); } public void run() { model.openEditor(palette.getShell()); } } private class ShowHideTabsAction extends Action { public ShowHideTabsAction() { super(PaletteUIMessages.SHOW_HIDE_TABS, PaletteAdapter.this.getImageDescriptor("visibility.gif")); //$NON-NLS-1$ setToolTipText(PaletteUIMessages.SHOW_HIDE); } public void run() { model.runShowHideDialog(); } } private class ImportTLDAction extends Action { public ImportTLDAction() { super(PaletteUIMessages.IMPORT_TLD, PaletteAdapter.this.getImageDescriptor("tld_import.gif")); //$NON-NLS-1$ setToolTipText(PaletteUIMessages.IMPORT); } public void run() { model.runImportTLDDialog(); } } private class PaletteModelListener implements XModelTreeListener { private boolean isTransaction = false; private boolean isDirty = false; private XModelObject lastAddedCat = null; public void nodeChanged(XModelTreeEvent event) { run(event); } public void structureChanged(XModelTreeEvent event) { run(event); } private void run(XModelTreeEvent event) { if ("transaction_begin".equals(event.getInfo())) { //$NON-NLS-1$ isTransaction = true; return; } if ("transaction_end".equals(event.getInfo())) { //$NON-NLS-1$ isTransaction = false; if (isDirty) { isDirty = false; reload(lastAddedCat); lastAddedCat = null; } return; } XModel xmodel = model.getXModel(); XModelObject exo = event.getModelObject(); boolean q = event.kind() == XModelTreeEvent.STRUCTURE_CHANGED && xmodel.getRoot().getPath().equals(exo.getPath()); XModelObject xroot = xmodel.getRoot("Palette"); //$NON-NLS-1$ if (xroot == null || isExist(xroot, event.getModelObject()) || q) { if (event.kind() == XModelTreeEvent.CHILD_ADDED && xroot != null && xroot.getPath().equals(exo.getPath())) { Object info = event.getInfo(); if (info instanceof XModelObject) { lastAddedCat = (XModelObject) info; } } if (isTransaction) { isDirty = true; } else { reload(lastAddedCat); lastAddedCat = null; } } } private boolean isExist(XModelObject root, XModelObject modelObject) { if (root == null || modelObject == null) { return false; } if (modelObject.getPath() == null || root.getPath() == null) { return false; } return (modelObject.getPath() + "/").startsWith(root.getPath() + "/"); //$NON-NLS-1$ //$NON-NLS-2$ } } /** * Test method * @return */ public PaletteViewer getViewer() { return viewer; } }