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// **********************************************************************
//
// Copyright (c) 2003-2011 ZeroC, Inc. All rights reserved.
//
// This plug-in is provided to you under the terms and conditions
// of the Eclipse Public License Version 1.0 ("EPL"). A copy of
// the EPL is available at http://www.eclipse.org/legal/epl-v10.html.
//
// **********************************************************************
package com.zeroc.slice2javaplugin.properties;
import java.util.ArrayList;
import java.util.Iterator;
import org.eclipse.core.resources.IContainer;
import org.eclipse.core.resources.IFolder;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.jface.viewers.CheckStateChangedEvent;
import org.eclipse.jface.viewers.CheckboxTreeViewer;
import org.eclipse.jface.viewers.ICheckStateListener;
import org.eclipse.jface.viewers.ISelectionChangedListener;
import org.eclipse.jface.viewers.ITreeContentProvider;
import org.eclipse.jface.viewers.SelectionChangedEvent;
import org.eclipse.jface.viewers.TreeSelection;
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Tree;
import org.eclipse.ui.dialogs.SelectionDialog;
import org.eclipse.ui.model.WorkbenchContentProvider;
import org.eclipse.ui.model.WorkbenchLabelProvider;
class SourceSelectionDialog extends SelectionDialog
{
// Do we allow multiple selections?
private boolean multiple = true;
// the root element to populate the viewer with
private IProject root;
// the visual selection widget group
private CheckboxTreeViewer selectionGroup;
// constants
private final static int SIZING_SELECTION_WIDGET_WIDTH = 400;
private final static int SIZING_SELECTION_WIDGET_HEIGHT = 300;
/**
* Creates a resource selection dialog rooted at the given element.
*
* @param parentShell
* the parent shell
* @param rootElement
* the root element to populate this dialog with
* @param message
* the message to be displayed at the top of this dialog, or
* <code>null</code> to display a default message
*/
public SourceSelectionDialog(Shell parentShell, IProject project, String message)
{
super(parentShell);
setTitle("Source Folder Selection");
root = project;
if(message != null)
{
setMessage(message);
}
else
{
setMessage("Select source folder:");
}
}
public void setMultiple(boolean m)
{
multiple = m;
}
/*
* (non-Javadoc) Method declared in Window.
*/
protected void configureShell(Shell shell)
{
super.configureShell(shell);
//PlatformUI.getWorkbench().getHelpSystem().setHelp(shell, IIDEHelpContextIds.RESOURCE_SELECTION_DIALOG);
}
public void create()
{
super.create();
initializeDialog();
}
/*
* (non-Javadoc) Method declared on Dialog.
*/
protected Control createDialogArea(Composite parent)
{
// page group
Composite composite = (Composite) super.createDialogArea(parent);
// create the input element, which has the root resource
// as its only child
ArrayList<IProject> input = new ArrayList<IProject>();
input.add(root);
createMessageArea(composite);
Tree tree = new Tree(composite, ((multiple) ? SWT.CHECK : SWT.SINGLE) | SWT.BORDER);
GridData data = new GridData(GridData.FILL_BOTH);
data.widthHint = SIZING_SELECTION_WIDGET_WIDTH;
data.heightHint = SIZING_SELECTION_WIDGET_HEIGHT;
tree.setLayoutData(data);
tree.setFont(parent.getFont());
selectionGroup = new CheckboxTreeViewer(tree);
selectionGroup.setContentProvider(getResourceProvider(IResource.FILE | IResource.PROJECT));
selectionGroup.setLabelProvider(WorkbenchLabelProvider.getDecoratingWorkbenchLabelProvider());
selectionGroup.setInput(input);
selectionGroup.expandToLevel(2);
return composite;
}
/**
* Returns a content provider for <code>IResource</code>s that returns only
* children of the given resource type.
*/
private ITreeContentProvider getResourceProvider(final int resourceType)
{
return new WorkbenchContentProvider()
{
@SuppressWarnings("unchecked")
public Object[] getChildren(Object o)
{
if(o instanceof IContainer)
{
IResource[] members = null;
try
{
members = ((IContainer) o).members();
}
catch(CoreException e)
{
// just return an empty set of children
return new Object[0];
}
// filter out the desired resource types
ArrayList<Object> results = new ArrayList<Object>();
for(int i = 0; i < members.length; i++)
{
if(members[i] instanceof IFolder)
{
results.add(members[i]);
}
}
return results.toArray();
}
// input element case
if(o instanceof ArrayList)
{
return ((ArrayList<Object>) o).toArray();
}
return new Object[0];
}
};
}
/**
* Initializes this dialog's controls.
*/
private void initializeDialog()
{
getOkButton().setEnabled(false);
if(multiple)
{
selectionGroup.addCheckStateListener(new ICheckStateListener()
{
public void checkStateChanged(CheckStateChangedEvent event)
{
if(!event.getChecked() && selectionGroup.getGrayed(event.getElement()))
{
selectionGroup.setChecked(event.getElement(), true);
}
else
{
int count = selectionGroup.getCheckedElements().length - getInitialElementSelections().size();
getOkButton().setEnabled(count > 0);
}
}
});
for(Iterator<?> iter = getInitialElementSelections().iterator(); iter.hasNext(); )
{
IResource cur = (IResource)iter.next();
selectionGroup.setGrayChecked(cur, true);
}
}
else
{
selectionGroup.addSelectionChangedListener(new ISelectionChangedListener()
{
public void selectionChanged(SelectionChangedEvent event)
{
getOkButton().setEnabled(true);
}
});
}
}
/**
* The <code>ResourceSelectionDialog</code> implementation of this
* <code>Dialog</code> method builds a list of the selected resources for
* later retrieval by the client and closes this dialog.
*/
protected void okPressed()
{
/*
* Iterator resultEnum = selectionGroup.getAllCheckedListItems();
* ArrayList list = new ArrayList(); while (resultEnum.hasNext()) {
* list.add(resultEnum.next()); } setResult(list);
*/
ArrayList<Object> list = new ArrayList<Object>();
if(multiple)
{
Object[] objs = selectionGroup.getCheckedElements();
for(int i = 0; i < objs.length; ++i)
{
if(!selectionGroup.getGrayed(objs[i]))
{
list.add(objs[i]);
}
}
}
else
{
TreeSelection obj = (TreeSelection)selectionGroup.getSelection();
if(!obj.isEmpty())
{
list.add(obj.getFirstElement());
}
}
setResult(list);
super.okPressed();
}
}
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