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/*
* This file is part of WebLookAndFeel library.
*
* WebLookAndFeel library is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* WebLookAndFeel library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with WebLookAndFeel library. If not, see .
*/
package com.alee.extended.tree;
import com.alee.extended.drag.FileDragAndDropHandler;
import com.alee.managers.log.Log;
import com.alee.managers.style.StyleId;
import com.alee.utils.CollectionUtils;
import com.alee.utils.FileUtils;
import com.alee.utils.compare.Filter;
import javax.swing.tree.TreeModel;
import javax.swing.tree.TreePath;
import java.awt.*;
import java.io.File;
import java.util.ArrayList;
import java.util.List;
/**
* This component is a file tree with asynchronous children loading.
* It also contains a few additional methods to find, select and edit visible in tree files.
*
* @author Mikle Garin
*/
public class WebFileTree extends WebAsyncTree
{
/**
* Whether allow files location search by dropping a file onto the tree or not.
*/
protected boolean filesDropSearchEnabled;
/**
* File lookup drop handler.
*/
protected FileDragAndDropHandler fileLookupDropHandler = null;
/**
* Delayed selection ID operations lock.
*/
protected final Object delayedSelectionLock = new Object ();
/**
* Delayed selection ID to determine wether it is the last one requested or not.
*/
protected int delayedSelectionId = 0;
/**
* Costructs file tree with system hard drives as root.
*/
public WebFileTree ()
{
this ( StyleId.filetree, FileTreeRootType.drives );
}
/**
* Constructs file tree with the specified root type.
*
* @param rootType file tree root type
*/
public WebFileTree ( final FileTreeRootType rootType )
{
this ( StyleId.filetree, rootType.getRoots () );
}
/**
* Constructs file tree with file under specified path as root.
*
* @param rootPath path to root file
*/
public WebFileTree ( final String rootPath )
{
this ( StyleId.filetree, new File ( rootPath ) );
}
/**
* Constructs file tree with specified files as root.
*
* @param rootFiles root files
*/
public WebFileTree ( final File... rootFiles )
{
this ( StyleId.filetree, CollectionUtils.asList ( rootFiles ) );
}
/**
* Constructs file tree with specified files as root.
*
* @param rootFiles root files
*/
public WebFileTree ( final List rootFiles )
{
this ( StyleId.filetree, rootFiles );
}
/**
* Costructs file tree with system hard drives as root.
*
* @param id style ID
*/
public WebFileTree ( final StyleId id )
{
this ( id, FileTreeRootType.drives );
}
/**
* Constructs file tree with the specified root type.
*
* @param id style ID
* @param rootType file tree root type
*/
public WebFileTree ( final StyleId id, final FileTreeRootType rootType )
{
this ( id, rootType.getRoots () );
}
/**
* Constructs file tree with file under specified path as root.
*
* @param id style ID
* @param rootPath path to root file
*/
public WebFileTree ( final StyleId id, final String rootPath )
{
this ( id, new File ( rootPath ) );
}
/**
* Constructs file tree with specified files as root.
*
* @param id style ID
* @param rootFiles root files
*/
public WebFileTree ( final StyleId id, final File... rootFiles )
{
this ( id, CollectionUtils.asList ( rootFiles ) );
}
/**
* Constructs file tree with specified files as root.
*
* @param id style ID
* @param rootFiles root files
*/
public WebFileTree ( final StyleId id, final List rootFiles )
{
super ( id, new FileTreeDataProvider ( rootFiles ) );
// Visual settings
setEditable ( false );
setRootVisible ( rootFiles != null && rootFiles.size () == 1 );
setCellEditor ( new WebFileTreeCellEditor () );
// Transfer handler
setFilesDropSearchEnabled ( true );
}
@Override
public FileTreeDataProvider getDataProvider ()
{
return ( FileTreeDataProvider ) super.getDataProvider ();
}
@Override
public void setModel ( final TreeModel newModel )
{
// Disable asynchronous loading for the model installation time
// This made to load initial data without delay using EDT
// This is some kind of workaround for file chooser to allow it proper file expansion on first load
final boolean async = isAsyncLoading ();
setAsyncLoading ( false );
super.setModel ( newModel );
setAsyncLoading ( async );
}
/**
* Returns file drop handler that locates file in the tree when dropped.
*
* @return file lookup drop handler
*/
protected FileDragAndDropHandler getFileLookupDropHandler ()
{
if ( fileLookupDropHandler == null )
{
fileLookupDropHandler = new FileDragAndDropHandler ()
{
@Override
public boolean isDropEnabled ()
{
return filesDropSearchEnabled;
}
@Override
public boolean filesDropped ( final List files )
{
// Selecting dragged files in tree
if ( files.size () > 0 )
{
setSelectedFile ( files.get ( 0 ), true );
return true;
}
return false;
}
};
}
return fileLookupDropHandler;
}
/**
* Returns whether files search by dropping system files on the tree enabled or not.
*
* @return true if files search by dropping system files on the tree enabled, false otherwise
*/
public boolean isFilesDropSearchEnabled ()
{
return filesDropSearchEnabled;
}
/**
* Sets whether files search by dropping system files on the tree enabled or not
*
* @param filesDropSearchEnabled whether files search by dropping system files on the tree enabled or not
*/
public void setFilesDropSearchEnabled ( final boolean filesDropSearchEnabled )
{
this.filesDropSearchEnabled = filesDropSearchEnabled;
final FileDragAndDropHandler lookupDropHandler = getFileLookupDropHandler ();
if ( filesDropSearchEnabled )
{
setTransferHandler ( lookupDropHandler );
}
else if ( getTransferHandler () == lookupDropHandler )
{
setTransferHandler ( null );
}
}
/**
* Returns tree files filter.
*
* @return files filter
*/
public Filter getFileFilter ()
{
final Filter filter = getFilter ();
return filter instanceof FileTreeNodeFilter ? ( ( FileTreeNodeFilter ) filter ).getFilter () : null;
}
/**
* Sets tree files filter.
*
* @param filter new files filter
*/
public void setFileFilter ( final Filter filter )
{
// We don't update old FileTreeNodeFilter with new file filter as this will force us to manually update tree
// So we simply create and set new FileTreeNodeFilter so that model can handle filter change and upate the tree
setFilter ( filter != null ? new FileTreeNodeFilter ( filter ) : null );
}
/**
* Changes displayed tree root name.
*
* @param rootName new root name
*/
public void setRootName ( final String rootName )
{
final FileTreeNode rootNode = getRootNode ();
rootNode.setTitle ( rootName );
getAsyncModel ().updateNode ( rootNode );
}
/**
* Finds and selects specified file in tree.
* This method might not have any effect in case the specified field doesn't exist under the file tree root.
*
* @param file file to select
*/
public void setSelectedFile ( final File file )
{
setSelectedFile ( file, false );
}
/**
* Finds and selects specified file in tree.
* This method might not have any effect in case the specified field doesn't exist under the file tree root.
*
* @param file file to select
* @param expand whether to expand selected file or not
*/
public void setSelectedFile ( final File file, final boolean expand )
{
expandToFile ( file, true, expand );
}
/**
* Expands tree structure to the specified file and expands that file node.
* This method might not have any effect in case the specified field doesn't exist under the file tree root.
*
* @param file file to expand
*/
public void expandFile ( final File file )
{
expandToFile ( file, false, true );
}
/**
* Expands tree structure to the specified file.
* This method might not have any effect in case the specified field doesn't exist under the file tree root.
*
* @param file file to expand tree sctructure to
*/
public void expandToFile ( final File file )
{
expandToFile ( file, false, false );
}
/**
* Expands tree structure to the specified file.
* This method might not have any effect in case the specified field doesn't exist under the file tree root.
*
* @param file file to expand tree sctructure to
* @param select whether to select file or not
*/
public void expandToFile ( final File file, final boolean select )
{
expandToFile ( file, select, false );
}
/**
* Expands tree structure to the specified file.
* This method might not have any effect in case the specified field doesn't exist under the file tree root.
*
* @param file file to expand tree sctructure to
* @param select whether to select file or not
* @param expand whether to expand file or not
*/
public void expandToFile ( final File file, final boolean select, final boolean expand )
{
expandToFile ( file, select, expand, null );
}
/**
* Expands tree structure to the specified file.
* This method might not have any effect in case the specified field doesn't exist under the file tree root.
*
* @param file file to expand tree sctructure to
* @param select whether to select file or not
* @param expand whether to expand file or not
* @param finalAction action performed after maximum possible file path has been expanded
*/
// todo Replace Runnable with listener (nodeExpanded, beforeSelection, afterSelection, completed)
public void expandToFile ( final File file, final boolean select, final boolean expand, final Runnable finalAction )
{
if ( file != null )
{
final int selectionId;
synchronized ( delayedSelectionLock )
{
delayedSelectionId++;
selectionId = delayedSelectionId;
}
// Expanding whole path
final FileTreeNode node = getClosestNode ( file );
if ( node != null )
{
if ( FileUtils.equals ( node.getFile (), file ) )
{
if ( select && selectionId == delayedSelectionId )
{
performFileSelection ( node, expand );
}
else
{
if ( expand )
{
expandNode ( node );
}
scrollToNode ( node );
}
if ( finalAction != null )
{
finalAction.run ();
}
}
else
{
final List path = FileUtils.getFilePath ( file );
// Removing already opened nodes
final int index = path.indexOf ( node.getFile () );
for ( int i = index; i >= 0; i-- )
{
path.remove ( i );
}
// Opening path to file
addAsyncTreeListener ( new AsyncTreeAdapter ()
{
private FileTreeNode lastNode = node;
@Override
public void loadCompleted ( final FileTreeNode parent, final List children )
{
if ( parent == lastNode )
{
// Searching for path part in children
boolean found = false;
for ( final FileTreeNode child : children )
{
if ( child.getFile ().equals ( path.get ( 0 ) ) )
{
found = true;
if ( path.size () == 1 )
{
removeAsyncTreeListener ( this );
if ( select && selectionId == delayedSelectionId )
{
performFileSelection ( child, expand );
}
else
{
if ( expand )
{
expandNode ( child );
}
scrollToNode ( child );
}
if ( finalAction != null )
{
finalAction.run ();
}
break;
}
else
{
lastNode = child;
path.remove ( 0 );
reloadNode ( child );
break;
}
}
}
if ( !found )
{
removeAsyncTreeListener ( this );
if ( select && selectionId == delayedSelectionId )
{
performFileSelection ( parent, false );
}
else
{
scrollToNode ( parent );
}
if ( finalAction != null )
{
finalAction.run ();
}
}
}
}
@Override
public void loadFailed ( final FileTreeNode parent, final Throwable cause )
{
if ( parent == lastNode )
{
removeAsyncTreeListener ( this );
if ( select && selectionId == delayedSelectionId )
{
performFileSelection ( parent, false );
}
else
{
scrollToNode ( parent );
}
if ( finalAction != null )
{
finalAction.run ();
}
}
}
} );
// Reload node to make sure we see up-to-date files list
reloadNode ( node );
}
}
}
else if ( select )
{
clearSelection ();
}
}
/**
* Performs the actual file selection.
*
* @param node node to select
* @param expand should expand the node
*/
protected void performFileSelection ( final FileTreeNode node, final boolean expand )
{
try
{
// Selecting node
final TreePath path = node.getTreePath ();
setSelectionPath ( path );
// Expanding if requested
if ( expand )
{
// Expanding
if ( !isAutoExpandSelectedNode () )
{
expandPath ( path );
}
// todo Use a better view rect?
// Scrolling view to node children
final Rectangle pathBounds = getPathBounds ( path );
if ( pathBounds != null )
{
final Rectangle vr = getVisibleRect ();
final Rectangle rect = new Rectangle ( vr.x, pathBounds.y, vr.width, vr.height );
scrollRectToVisible ( rect );
}
}
else
{
// todo Use a better view rect?
// Properly scrolling view
scrollPathToVisible ( path );
}
}
catch ( final Throwable e )
{
Log.error ( this, e );
}
}
/**
* Returns selected file.
*
* @return selected file
*/
public File getSelectedFile ()
{
final FileTreeNode selectedNode = getSelectedNode ();
return selectedNode != null ? selectedNode.getFile () : null;
}
/**
* Returns selected files.
*
* @return selected files
*/
public List getSelectedFiles ()
{
final List selectedFiles = new ArrayList ();
if ( getSelectionPaths () != null )
{
for ( final TreePath path : getSelectionPaths () )
{
selectedFiles.add ( getNodeForPath ( path ).getFile () );
}
}
return selectedFiles;
}
/**
* Returns selected nodes.
*
* @return selected nodes
*/
@Override
public List getSelectedNodes ()
{
final List selectedNodes = new ArrayList ();
if ( getSelectionPaths () != null )
{
for ( final TreePath path : getSelectionPaths () )
{
selectedNodes.add ( getNodeForPath ( path ) );
}
}
return selectedNodes;
}
/**
* Adds new file into tree structure.
* This method will have effect only if node with parent file exists and it has already loaded children.
*
* @param parent parent file
* @param file added file
* @return true if tree structure was changed by the operation, false otherwise
*/
public boolean addFile ( final File parent, final File file )
{
return addFiles ( parent, file );
}
/**
* Adds new file into tree structure.
* This method will have effect only if node with parent file exists and it has already loaded children.
*
* @param parentNode parent node
* @param file added file
* @return true if tree structure was changed by the operation, false otherwise
*/
public boolean addFile ( final FileTreeNode parentNode, final File file )
{
return addFiles ( parentNode, file );
}
/**
* Adds new files into tree structure.
* This method will have effect only if node with parent file exists and it has already loaded children.
*
* @param parent parent file
* @param files added files
* @return true if tree structure was changed by the operation, false otherwise
*/
public boolean addFiles ( final File parent, final File... files )
{
return addFiles ( parent, CollectionUtils.asList ( files ) );
}
/**
* Adds new files into tree structure.
* This method will have effect only if node with parent file exists and it has already loaded children.
*
* @param parentNode parent node
* @param files added files
* @return true if tree structure was changed by the operation, false otherwise
*/
public boolean addFiles ( final FileTreeNode parentNode, final File... files )
{
return addFiles ( parentNode, CollectionUtils.asList ( files ) );
}
/**
* Adds new files into tree structure.
* This method will have effect only if node with parent file exists and it has already loaded children.
*
* @param parent parent file
* @param files added files
* @return true if tree structure was changed by the operation, false otherwise
*/
public boolean addFiles ( final File parent, final List files )
{
// Checking that node for the file exists
final FileTreeNode parentNode = getNode ( parent );
return parentNode != null && addFiles ( parentNode, files );
}
/**
* Adds new files into tree structure.
* This method will have effect only if node with parent file exists and it has already loaded children.
*
* @param parentNode parent node
* @param files added files
* @return true if tree structure was changed by the operation, false otherwise
*/
public boolean addFiles ( final FileTreeNode parentNode, final List files )
{
if ( hasBeenExpanded ( getPathForNode ( parentNode ) ) )
{
final List childNodes = new ArrayList ( files.size () );
for ( final File file : files )
{
childNodes.add ( new FileTreeNode ( file ) );
}
addChildNodes ( parentNode, childNodes );
return true;
}
else
{
return false;
}
}
/**
* Removes file from tree structure.
* This method will have effect only if node with the specified file exists.
*
* @param file removed file
* @return true if tree structure was changed by the operation, false otherwise
*/
public boolean removeFile ( final File file )
{
return removeNode ( getNode ( file ) );
}
/**
* Removes files from tree structure.
* This method only works if nodes with the specified files exist.
*
* @param files removed files
* @return true if tree structure was changed by the operation, false otherwise
*/
public boolean removeFiles ( final File... files )
{
// todo Optimize (multi-node delete method in model)
boolean changed = false;
for ( final File file : files )
{
changed |= removeFile ( file );
}
return changed;
}
/**
* Removes files from tree structure.
* This method only works if nodes with the specified files exist.
*
* @param files removed files
* @return true if tree structure was changed by the operation, false otherwise
*/
public boolean removeFiles ( final List files )
{
boolean changed = false;
for ( final File file : files )
{
changed |= removeFile ( file );
}
return changed;
}
/**
* Starts editing cell with the specified file.
*
* @param file file to edit
*/
public void startEditingFile ( final File file )
{
final FileTreeNode node = getNode ( file );
if ( node != null )
{
startEditingNode ( node );
}
else
{
expandToFile ( file, false, false, new Runnable ()
{
@Override
public void run ()
{
final FileTreeNode node = getNode ( file );
if ( node != null )
{
startEditingNode ( node );
}
}
} );
}
}
/**
* Returns files collected from loaded node children.
* This method will not force children load.
*
* @param node node
* @return files from node children
*/
public List getFileChildren ( final FileTreeNode node )
{
final List files = new ArrayList ();
for ( int i = 0; i < node.getChildCount (); i++ )
{
files.add ( node.getChildAt ( i ).getFile () );
}
return files;
}
/**
* Returns node for the specified file if it is already loaded.
* Returns null if node for this file was not loaded yet or if the specified file doesn't exist under the file tree root.
*
* @param file file to search for
* @return file node
*/
public FileTreeNode getNode ( final File file )
{
final FileTreeNode node = getClosestNode ( file );
return node != null && FileUtils.equals ( file, node.getFile () ) ? node : null;
}
/**
* Returns loaded and closest to file node.
* Might return null in case file path parts were not found in tree.
*
* @param file file to look for
* @return closest to file node
*/
public FileTreeNode getClosestNode ( final File file )
{
return getClosestNode ( ( FileTreeNode ) getModel ().getRoot (), FileUtils.getFilePath ( file ) );
}
/**
* Returns loaded and closest to file node.
* Might return null in case file path parts were not found in tree.
*
* @param node node to look into
* @param path path of the file to look for
* @return closest to file node
*/
protected FileTreeNode getClosestNode ( final FileTreeNode node, final List path )
{
// Check if this file is part of the file path
final File file = node.getFile ();
if ( file != null )
{
if ( path.contains ( file ) )
{
// Filter out upper levels of path
final int index = path.indexOf ( file );
for ( int i = index; i >= 0; i-- )
{
path.remove ( i );
}
// Find the deepest laoded path node
return getDeepestPathNode ( node, path );
}
}
// Check child nodes
for ( int i = 0; i < node.getChildCount (); i++ )
{
final FileTreeNode found = getClosestNode ( node.getChildAt ( i ), path );
if ( found != null )
{
return found;
}
}
// No nodes found
return null;
}
/**
* Returns deepest path node available.
*
* @param pathNode current path node
* @param path files path
* @return deepest path node available
*/
protected FileTreeNode getDeepestPathNode ( final FileTreeNode pathNode, final List path )
{
if ( path.size () > 0 )
{
for ( int i = 0; i < pathNode.getChildCount (); i++ )
{
final FileTreeNode child = pathNode.getChildAt ( i );
if ( child.getFile ().equals ( path.get ( 0 ) ) )
{
path.remove ( 0 );
return getDeepestPathNode ( child, path );
}
}
}
return pathNode;
}
/**
* Reloads child files for the specified folder.
* Unlike asynchronous methods this one works in EDT and forces to wait until the nodes load finishes.
*
* @param folder folder to reload children for
*/
public void reloadChildrenSync ( final File folder )
{
reloadChildrenSync ( folder, false );
}
/**
* Reloads child files for the specified folder and selects folder node if requested.
* Unlike asynchronous methods this one works in EDT and forces to wait until the nodes load finishes.
*
* @param folder folder to reload children for
* @param select whether select folder node or not
*/
public void reloadChildrenSync ( final File folder, final boolean select )
{
final FileTreeNode node = getNode ( folder );
if ( node != null )
{
reloadNodeSync ( node, select );
}
}
/**
* Reloads child files for the specified folder.
*
* @param folder folder to reload children for
*/
public void reloadChildren ( final File folder )
{
reloadChildren ( folder, false );
}
/**
* Reloads child files for the specified folder and selects folder node if requested.
*
* @param folder folder to reload children for
* @param select whether select folder node or not
*/
public void reloadChildren ( final File folder, final boolean select )
{
final FileTreeNode node = getNode ( folder );
if ( node != null )
{
reloadNode ( node, select );
}
}
}
