/*******************************************************************************
* Copyright (c) 2009, 2010 Innovation Gate GmbH.
* 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:
* Innovation Gate GmbH - initial API and implementation
******************************************************************************/
package de.innovationgate.eclipse.utils.ui;
import org.eclipse.core.resources.IContainer;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.resources.IWorkspaceRoot;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.jdt.core.IJavaProject;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.TreeViewer;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.jface.viewers.ViewerSorter;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.events.SelectionListener;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Tree;
import org.eclipse.swt.widgets.TreeItem;
import org.eclipse.ui.model.WorkbenchContentProvider;
import org.eclipse.ui.model.WorkbenchLabelProvider;
import de.innovationgate.eclipse.utils.FolderSelectionViewFilter;
public abstract class FolderSelectionPage extends ValidatedWizardPage implements SelectionListener {
private TreeViewer _treeViewer;
private IResource _workspaceSelection;
public TreeViewer getTreeViewer() {
return _treeViewer;
}
public IResource getSelectedResource() {
TreeItem items[] = getTreeViewer().getTree().getSelection();
if (items != null && items.length > 0) {
Object selection = items[0].getData();
if (selection instanceof IResource) {
return (IResource) selection;
} else if (selection instanceof IJavaProject) {
return ((IJavaProject)selection).getProject();
}
}
return null;
}
public FolderSelectionPage(String title, String description, IStructuredSelection workspaceSelection) {
super(title);
setTitle(title);
setPageComplete(false);
setDescription(description);
if (workspaceSelection != null) {
Object selection = workspaceSelection.getFirstElement();
if (selection instanceof IResource) {
_workspaceSelection = (IResource) selection;
} else if (selection instanceof IJavaProject) {
_workspaceSelection = ((IJavaProject)selection).getProject();
}
}
}
public void createControl(Composite parent) {
Composite container = new Composite(parent, SWT.NULL);
GridLayout layout = new GridLayout();
container.setLayout(layout);
_treeViewer = createTreeViewer(container);
Tree treeWidget = _treeViewer.getTree();
GridData gridDataTree = new GridData(GridData.FILL_BOTH);
gridDataTree.horizontalSpan = 3;
gridDataTree.widthHint = convertWidthInCharsToPixels(80);
gridDataTree.heightHint = convertHeightInCharsToPixels(20);
treeWidget.setLayoutData(gridDataTree);
treeWidget.addSelectionListener(this);
setControl(container);
performValidation();
}
protected TreeViewer createTreeViewer(Composite parent) {
int style = SWT.BORDER | SWT.SINGLE;
TreeViewer treeViewer = new TreeViewer(new Tree(parent, style));
treeViewer.setContentProvider(new WorkbenchContentProvider());
treeViewer.setLabelProvider(WorkbenchLabelProvider.getDecoratingWorkbenchLabelProvider());
treeViewer.setComparator(new NameSorter());
treeViewer.addFilter(getFilter());
IWorkspaceRoot workspaceRoot = ResourcesPlugin.getWorkspace().getRoot();
treeViewer.setInput(workspaceRoot);
IStructuredSelection preSelection = getPreSelection(_workspaceSelection);
if (preSelection != null) {
treeViewer.setSelection(preSelection);
}
return treeViewer;
}
protected abstract FolderSelectionViewFilter getFilter();
/**
* computes a preselection for the folder tree based upon the given workspace selected resource
* @param workspaceSelection the selected resource in the workspace - might be null
* @return
*/
protected IStructuredSelection getPreSelection(IResource workspaceSelection) {
return null;
}
public void widgetDefaultSelected(SelectionEvent e) {
performValidation();
}
public void widgetSelected(SelectionEvent e) {
performValidation();
}
@Override
public void computeResponse() {
}
class NameSorter extends ViewerSorter {
public int compare(Viewer viewer, Object e1, Object e2) {
if (e1 instanceof IContainer && e2 instanceof IContainer) {
IContainer ct1 = (IContainer) e1;
IContainer ct2 = (IContainer) e2;
return ct1.getName().toLowerCase().compareTo(ct2.getName().toLowerCase());
}
return 0;
}
}
}