/*******************************************************************************
* Copyright (c) 2003, 2016 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.server.ui.internal.viewers;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.core.runtime.jobs.Job;
import org.eclipse.jface.dialogs.Dialog;
import org.eclipse.jface.viewers.*;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.*;
import org.eclipse.ui.dialogs.FilteredTree;
import org.eclipse.wst.server.ui.ServerUIUtil;
import org.eclipse.wst.server.ui.internal.Messages;
import org.eclipse.wst.server.ui.internal.ServerUIPlugin;
/**
*
*/
public abstract class AbstractTreeComposite extends Composite {
protected FilteredTree tree;
protected TreeViewer treeViewer;
protected Label description;
protected Button showAdapters;
protected Link prefLink;
protected AbstractTreeContentProvider contentProvider;
boolean showAdaptersLink = false; // To control the display of Show Downloadable Adpaters Link
public AbstractTreeComposite(Composite parent) {
super(parent, SWT.NONE);
createWidgets();
}
protected void createWidgets() {
GridLayout layout = new GridLayout();
layout.horizontalSpacing = 3;
layout.verticalSpacing = 3;
layout.marginWidth = 0;
layout.marginHeight = 0;
layout.numColumns = 2;
setLayout(layout);
String descriptionText = getDescriptionLabel();
if (descriptionText != null) {
Label label = new Label(this, SWT.WRAP);
label.setText(descriptionText);
GridData data = new GridData(GridData.FILL_HORIZONTAL | GridData.VERTICAL_ALIGN_CENTER);
data.horizontalSpan = 2;
label.setLayoutData(data);
}
String details = getDetailsLabel();
if (details != null) {
Composite comp = new Composite(this, SWT.NONE);
layout = new GridLayout();
layout.numColumns = 3;
comp.setLayout(layout);
GridData data = new GridData(GridData.HORIZONTAL_ALIGN_END);
data.horizontalSpan = 2;
comp.setLayoutData(data);
Dialog.applyDialogFont(comp);
if (getDetailsLink()){
showAdapters = new Button(comp, SWT.CHECK);
showAdapters.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent e) {
handleShowAdapterSelection(showAdapters.getSelection());
}
});
if (!showAdaptersLink && !ServerUIPlugin.getPreferences().getExtAdapter())
ServerUIPlugin.getPreferences().setExtAdapter(true); // If the preference was changed in previous version
showAdapters.setSelection(ServerUIPlugin.getPreferences().getExtAdapter());
showAdapters.setVisible(showAdaptersLink);
}
prefLink = new Link(comp, SWT.NONE);
prefLink.setText("<a>" + details + "</a>");
prefLink.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent e) {
detailsSelected();
}
});
if (getDetailsLink()){
prefLink.setEnabled(!ServerUIPlugin.getPreferences().getExtAdapter());
}
prefLink.setVisible(showAdaptersLink);
}
Label label = new Label(this, SWT.WRAP);
label.setText(getTitleLabel());
GridData data = new GridData(GridData.FILL_HORIZONTAL | GridData.VERTICAL_ALIGN_CENTER);
if (descriptionText != null && details == null)
data.verticalIndent = 7;
data.horizontalSpan = 2;
label.setLayoutData(data);
createTree();
data = new GridData(GridData.FILL_BOTH);
data.horizontalSpan = 2;
tree.setLayoutData(data);
treeViewer = tree.getViewer();
treeViewer.setSorter(new ViewerSorter());
treeViewer.addDoubleClickListener(new IDoubleClickListener() {
public void doubleClick(DoubleClickEvent event) {
IStructuredSelection s = (IStructuredSelection) event.getSelection();
Object element = s.getFirstElement();
if (treeViewer.isExpandable(element))
treeViewer.setExpandedState(element, !treeViewer.getExpandedState(element));
}
});
if (hasDescription()) {
description = new Label(this, SWT.WRAP);
description.setText("Multi\nLine\nMessage");
Dialog.applyDialogFont(this);
Point p = description.computeSize(SWT.DEFAULT, SWT.DEFAULT);
description.setText("");
data = new GridData(GridData.FILL_HORIZONTAL | GridData.VERTICAL_ALIGN_CENTER);
data.horizontalSpan = 1;
if (p.y > 10)
data.heightHint = p.y;
else
data.heightHint = 42;
description.setLayoutData(data);
}
tree.forceFocus();
}
protected void createTree() {
tree = new FilteredTree(this, SWT.BORDER | SWT.V_SCROLL | SWT.H_SCROLL | SWT.SINGLE, new ServerPatternFilter(), true);
}
protected abstract String getDescriptionLabel();
protected abstract String getTitleLabel();
protected boolean hasDescription() {
return true;
}
protected void setDescription(String text) {
if (description != null && text != null)
description.setText(text);
}
protected TreeViewer getTreeViewer() {
return treeViewer;
}
protected Object getSelection(ISelection sel2) {
IStructuredSelection sel = (IStructuredSelection) sel2;
return sel.getFirstElement();
}
public void refresh() {
treeViewer.refresh();
}
public void refresh(Object obj) {
treeViewer.refresh(obj);
}
public void remove(Object obj) {
treeViewer.remove(obj);
}
protected String getDetailsLabel() {
return null;
}
protected boolean getDetailsLink() {
return false;
}
protected void detailsSelected() {
// do nothing
}
protected void refreshServerNode(){
// class implementing will provide the details if required
}
protected void downloadAdaptersSelectionChanged(boolean action) {
ServerUIPlugin.getPreferences().setExtAdapter(action);
Job job = new Job(Messages.jobInitializingServersView) {
public IStatus run(final IProgressMonitor monitor) {
Display.getDefault().asyncExec(new Runnable() {
public void run() {
try {
if (ServerUIPlugin.getPreferences().getExtAdapter()){
handleShowAdapters(monitor);
}
else {
contentProvider.fillTree();
refresh("root");
if (contentProvider.getInitialSelection() != null){
treeViewer.setSelection(new StructuredSelection(contentProvider.getInitialSelection()), true);
}
}
} catch (Exception e) {
// ignore - wizard has already been closed
}
}
});
return Status.OK_STATUS;
}
};
job.setSystem(true);
job.setPriority(Job.SHORT);
job.schedule();
}
protected void handleShowAdapterSelection(boolean selection){
showAdapters.setSelection(selection);
prefLink.setEnabled(!selection);
downloadAdaptersSelectionChanged(selection);
}
protected void deferInitialization() {
ServerUIUtil.refreshServerNode(false);
Job job = new Job(Messages.jobInitializingServersView) {
public IStatus run(final IProgressMonitor monitor) {
Display.getDefault().asyncExec(new Runnable() {
public void run() {
try {
if (ServerUIPlugin.getPreferences().getExtAdapter()){
handleShowAdapters(monitor);
}
else if (contentProvider.getInitialSelection() != null){
treeViewer.setSelection(new StructuredSelection(contentProvider.getInitialSelection()), true);
}
} catch (Exception e) {
// ignore - wizard has already been closed
}
}
});
return Status.OK_STATUS;
}
};
job.setSystem(true);
job.setPriority(Job.SHORT);
job.schedule();
}
protected void handleShowAdapters(IProgressMonitor monitor){
contentProvider.fillAdapterTree(treeViewer, monitor);
if (contentProvider.getInitialSelection() != null && !treeViewer.getTree().isDisposed()){
treeViewer.setSelection(new StructuredSelection(contentProvider.getInitialSelection()), true);
}
}
}