/*
* Created on Feb 27, 2004
*
* The MIT License
* Copyright (c) 2004 Rob Rohan
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the Software
* is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
package org.cfeclipse.cfml.views.snips;
/**
* @author Rob
*
* To change the template for this generated type comment go to
* Window - Preferences - Java - Code Generation - Code and Comments
*
* This class was influenced by the aricle:
* How to use the JFace Tree Viewer
* By Chris Grindstaff, Applied Reasoning (chrisg at appliedReasoning.com)
* May 5, 2002
*/
import java.io.File;
import java.io.FileFilter;
import java.net.MalformedURLException;
import java.net.URL;
import org.cfeclipse.snipex.SnipEx;
import org.cfeclipse.snipex.Library;
import org.cfeclipse.snipex.Snippet;
import org.eclipse.jface.viewers.IContentProvider;
import org.eclipse.jface.viewers.IStructuredContentProvider;
import org.eclipse.jface.viewers.ITreeContentProvider;
import org.eclipse.jface.viewers.TreeViewer;
import org.eclipse.jface.viewers.Viewer;
class SnippetFileFilter implements FileFilter {
public boolean accept(File f)
{
String sflower = f.getAbsoluteFile().toString().toLowerCase();
if(sflower.endsWith(SnipTreeView.DW_SNIP_EXT)
|| sflower.endsWith(SnipTreeView.CFE_SNIP_EXT)
|| (f.isDirectory() && !f.getName().startsWith(".")))
{
return true;
}
return false;
}
public String getDescription()
{
return "A snippet file filter";
}
}
public class SnipTreeViewContentProvider implements ITreeContentProvider { //, IDeltaListener {
/** scratch pad */
protected static Object[] EMPTY_ARRAY = new Object[0];
protected static FileFilter snippetfilter = new SnippetFileFilter();
protected TreeViewer viewer;
protected File rootdir;
public SnipTreeViewContentProvider(File root)
{
rootdir = root;
}
/**
* Notifies this content provider that the given viewer's input
* has been switched to a different element.
* <p>
* A typical use for this method is registering the content provider as a listener
* to changes on the new input (using model-specific means), and deregistering the viewer
* from the old input. In response to these change notifications, the content provider
* propagates the changes to the viewer.
* </p>
*
* @see IContentProvider#inputChanged(Viewer, Object, Object)
*
* @param viewer the viewer
* @param oldInput the old input element, or <code>null</code> if the viewer
* did not previously have an input
* @param newInput the new input element, or <code>null</code> if the viewer
* does not have an input
*/
public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
//System.err.println("Doing input changed " + oldInput + " " + newInput);
this.viewer = (TreeViewer)viewer;
}
/**
* Gets all the children from a parent
* @see ITreeContentProvider#getChildren(Object)
*/
public Object[] getChildren(Object parentElement)
{
if(parentElement instanceof File) {
if(((File)parentElement).isDirectory()) {
if(parentElement.equals(rootdir)) {
Object[] files = ((File)parentElement).listFiles(snippetfilter);
Object[] snipex = SnipTreeView.getSnipExURLs();
return SnipTreeView.appendArrays(files, snipex);
} else {
return ((File)parentElement).listFiles(snippetfilter);
}
}
} else if(parentElement instanceof Library || parentElement instanceof SnipEx) {
Library lib = (Library)parentElement;
return SnipTreeView.appendArrays(lib.getLibraries().toArray(), lib.getSnippets().toArray());
}
return EMPTY_ARRAY;
}
/**
* Get the parent of element
* @see ITreeContentProvider#getParent(Object)
*/
public Object getParent(Object element)
{
if(element instanceof File && !element.equals(rootdir))
{
return ((File)element).getParentFile();
}
return null;
}
/**
* does element have any children?
* @see ITreeContentProvider#hasChildren(Object)
*/
public boolean hasChildren(Object element) {
if(element instanceof SnipEx || element instanceof Library) {
return true;
} else if(element instanceof Snippet) {
return false;
}
return getChildren(element).length > 0;
}
/**
* get inputelements children
* @see IStructuredContentProvider#getElements(Object)
*/
public Object[] getElements(Object inputElement)
{
return getChildren(inputElement);
}
/**
* @see IContentProvider#dispose()
*/
public void dispose(){;}
}