Java tutorial
/******************************************************************************* * Copyright (c) 2001, 2008 Oracle 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: * Oracle Corporation - initial API and implementation *******************************************************************************/ package org.eclipse.jst.jsf.ui.internal.component; import org.eclipse.jface.action.Action; import org.eclipse.jface.action.IToolBarManager; import org.eclipse.jface.viewers.IInputProvider; import org.eclipse.jface.viewers.ISelectionChangedListener; import org.eclipse.jface.viewers.LabelProvider; import org.eclipse.jface.viewers.SelectionChangedEvent; import org.eclipse.jface.viewers.TreeViewer; import org.eclipse.jface.viewers.Viewer; import org.eclipse.jface.viewers.ViewerSorter; import org.eclipse.jst.jsf.common.dom.TagIdentifier; import org.eclipse.jst.jsf.common.runtime.internal.model.ViewObject; import org.eclipse.jst.jsf.common.runtime.internal.model.component.ComponentInfo; import org.eclipse.jst.jsf.common.runtime.internal.model.decorator.ConverterDecorator; import org.eclipse.jst.jsf.common.runtime.internal.model.decorator.Decorator; import org.eclipse.jst.jsf.common.runtime.internal.model.decorator.ValidatorDecorator; import org.eclipse.jst.jsf.common.ui.JSFUICommonPlugin; import org.eclipse.jst.jsf.common.ui.internal.form.AbstractMasterForm; import org.eclipse.jst.jsf.common.ui.internal.utils.JSFSharedImages; import org.eclipse.jst.jsf.designtime.internal.view.DTUIViewRoot; import org.eclipse.jst.jsf.designtime.internal.view.XMLViewObjectMappingService; import org.eclipse.jst.jsf.designtime.internal.view.XMLViewObjectMappingService.ElementData; import org.eclipse.jst.jsf.ui.internal.common.MetadataTagImageManager; import org.eclipse.jst.jsf.ui.internal.component.ComponentTreeViewProvider.TreePlaceHolder; import org.eclipse.osgi.util.NLS; import org.eclipse.swt.SWT; import org.eclipse.swt.graphics.Image; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Control; import org.eclipse.swt.widgets.Text; import org.eclipse.swt.widgets.Tree; import org.eclipse.ui.ISharedImages; import org.eclipse.ui.PlatformUI; import org.eclipse.ui.forms.widgets.FormToolkit; /*package*/class ComponentMasterForm extends AbstractMasterForm { private final DTJSFViewModel _model; private TreeViewer _treeViewer; private Action _refreshAction; protected ComponentMasterForm(final FormToolkit toolkit, final DTJSFViewModel model) { super(toolkit); _model = model; } @Override public Control createClientArea(final Composite parent) { final Tree tree = getToolkit().createTree(parent, SWT.MULTI | SWT.H_SCROLL | SWT.V_SCROLL | SWT.BORDER); final GridData gridData = new GridData(SWT.FILL, SWT.FILL, true, true); tree.setLayoutData(gridData); _treeViewer = new TreeViewer(tree); _treeViewer.getTree().setLayoutData(gridData); _treeViewer.setContentProvider(new ComponentTreeViewProvider()); _treeViewer.setLabelProvider(new TreeViewLabelProvider(_treeViewer)); _treeViewer.setSorter(new ComponentTreeSorter()); _treeViewer.addSelectionChangedListener(new ISelectionChangedListener() { public void selectionChanged(final SelectionChangedEvent event) { getListener().selectionChanged(event); } }); _model.init(new Runnable() { public void run() { PlatformUI.getWorkbench().getDisplay().asyncExec(new Runnable() { public void run() { final Object[] expanded = _treeViewer.getExpandedElements(); _treeViewer.refresh(); _treeViewer.setExpandedElements(expanded); } }); } }); _treeViewer.setInput(_model); makeActions(); return tree; } @Override protected void contributeActions(final IToolBarManager formManager, final IToolBarManager localManager) { // contribute to local tool bar localManager.add(_refreshAction); localManager.update(false); } private void makeActions() { _refreshAction = new Action() { @Override public void run() { _model.update(); } }; _refreshAction.setText(Messages.ComponentMasterForm_RefreshView); _refreshAction.setToolTipText(Messages.ComponentMasterForm_RefreshView); _refreshAction.setImageDescriptor(JSFUICommonPlugin.getDefault().getImageDescriptor("refresh_nav_16.gif")); //$NON-NLS-1$ } @Override protected void contributeToHeadArea(final FormToolkit toolkit, final Composite container) { final Text label = new Text(container, SWT.READ_ONLY | SWT.SINGLE | SWT.LEFT); String viewId = _model.getViewId(); viewId = viewId == null ? Messages.ComponentMasterForm_Unknown : viewId; label.setText(NLS.bind(Messages.ComponentMasterForm_HeadAreaText, viewId, _model.getProject().getName())); } private static class TreeViewLabelProvider extends LabelProvider { private final IInputProvider _inputProvider; private final MetadataTagImageManager _metadataIconManager; /** * @param inputProvider */ private TreeViewLabelProvider(final IInputProvider inputProvider) { super(); _inputProvider = inputProvider; _metadataIconManager = new MetadataTagImageManager(); } @Override public String getText(final Object obj) { if (obj instanceof ComponentInfo) { String text = ""; //$NON-NLS-1$ final ComponentInfo compInfo = (ComponentInfo) obj; String className = compInfo.getComponentTypeInfo().getClassName(); final int dotIdx = className.lastIndexOf('.'); if (dotIdx > -1 && dotIdx + 1 < className.length()) { className = className.substring(dotIdx + 1); } text = className; final String id = compInfo.getId(); if (id != null) { text += " (id=" + id + ")"; //$NON-NLS-1$ //$NON-NLS-2$ } return text; } else if (obj instanceof TreePlaceHolder) { return Messages.ComponentMasterForm_CalculatingView; } return obj.toString(); } @Override public Image getImage(final Object obj) { Image image = null; if (obj instanceof ViewObject) { final XMLViewObjectMappingService mappingService = getMappingService(); if (mappingService != null) { final ElementData elementData = mappingService.findElementData((ViewObject) obj); if (elementData != null) { final TagIdentifier tagId = elementData.getTagId(); final DTJSFViewModel model = getModel(); if (model != null) { image = _metadataIconManager.getSmallIconImage(model.getFile(), tagId); } } } if (image == null) { image = getDefaultImage((ViewObject) obj); } } else if (obj instanceof TreePlaceHolder) { return JSFUICommonPlugin.getDefault().getImage("configs.gif"); //$NON-NLS-1$ } if (image == null) { final String imageKey = ISharedImages.IMG_OBJ_ELEMENT; image = PlatformUI.getWorkbench().getSharedImages().getImage(imageKey); } return image; } private XMLViewObjectMappingService getMappingService() { final DTJSFViewModel model = getModel(); if (model != null) { final DTUIViewRoot root = model.getRoot(); if (root != null) { return (XMLViewObjectMappingService) root.getServices() .getAdapter(XMLViewObjectMappingService.class); } } return null; } private DTJSFViewModel getModel() { final Object input = _inputProvider.getInput(); if (input instanceof DTJSFViewModel) { return (DTJSFViewModel) input; } return null; } private Image getDefaultImage(final ViewObject obj) { if (obj instanceof DTUIViewRoot) { return JSFUICommonPlugin.getDefault().getImage(JSFSharedImages.GENERIC_VIEWROOT_IMG); } if (obj instanceof ComponentInfo) { return JSFUICommonPlugin.getDefault().getImage(JSFSharedImages.GENERIC_OBJECT_IMG); } else if (obj instanceof ConverterDecorator) { return JSFUICommonPlugin.getDefault().getImage(JSFSharedImages.GENERIC_CONVERTER_IMG); } else if (obj instanceof ValidatorDecorator) { return JSFUICommonPlugin.getDefault().getImage(JSFSharedImages.GENERIC_VALIDATOR_IMG); } return JSFUICommonPlugin.getDefault().getImage(JSFSharedImages.DEFAULT_PALETTE_TAG_IMG); } } private static class ComponentTreeSorter extends ViewerSorter { @Override public int compare(final Viewer viewer, final Object e1, final Object e2) { return 0; } @Override public int category(final Object element) { // sort decorators first into their own category if (element instanceof Decorator) { return 0; } return 1; } } }