com.xored.glance.ui.ccvs.TreeUtils.java Source code

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Here is the source code for com.xored.glance.ui.ccvs.TreeUtils.java

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/*******************************************************************************
 * Copyright (c) 2012 xored software, Inc.
 * 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:
 *     xored software, Inc. - initial API and implementation (Ivan Lobachev)
 ******************************************************************************/
package com.xored.glance.ui.ccvs;

import org.eclipse.jface.viewers.TreeViewer;
import org.eclipse.swt.events.DisposeEvent;
import org.eclipse.swt.events.DisposeListener;
import org.eclipse.swt.widgets.Tree;
import org.eclipse.swt.widgets.TreeItem;
import org.eclipse.team.internal.ccvs.core.CVSTag;
import org.eclipse.team.internal.ccvs.core.resources.RemoteFile;
import org.eclipse.team.internal.ccvs.core.resources.RemoteFolder;
import org.eclipse.team.internal.ccvs.ui.repo.RepositoryRoot;
import org.eclipse.team.internal.ui.Utils;
import org.eclipse.ui.progress.PendingUpdateAdapter;

@SuppressWarnings("restriction")
public class TreeUtils {

    public static String getFullPath(TreeItem item) {
        String res = "";
        TreeItem curItem = item;
        while (curItem != null) {
            String itemName;
            if (curItem.getData() instanceof RemoteFile) {
                itemName = ((RemoteFile) (curItem.getData())).getName();
            } else {
                itemName = curItem.getText();
            }
            if (res.length() == 0) {
                res = itemName;
            } else {
                res = itemName + "/" + res;
            }

            curItem = curItem.getParentItem();
        }
        return res;
    }

    public static String getTreeItemName(TreeItem treeItem) {
        if (treeItem.getData() instanceof RemoteFolder) {
            return ((RemoteFolder) treeItem.getData()).getName();
        } else if (treeItem.getData() instanceof RepositoryRoot) {
            return ((RepositoryRoot) treeItem.getData()).getRoot().toString();
        } else if (treeItem.getData() instanceof RemoteFile) {
            return ((RemoteFile) treeItem.getData()).getName();
        } else if (treeItem.getData() instanceof CVSTag) {
            return ((CVSTag) treeItem.getData()).getName();
        }
        return treeItem.getText();
    }

    public static TreeItem findTreeItem(Tree tree, String path, TreeItem item) {
        TreeItem[] items;
        if (item == null) {
            items = tree.getItems();
        } else {
            items = item.getItems();
        }
        if (path == null) {
            return item;
        }
        for (TreeItem treeItem : items) {
            String curFolder = TreeUtils.getTreeItemName(treeItem);
            if (treeItem.getData() != null && path.startsWith(curFolder)
                    && ((path.length() == curFolder.length()) || (path.charAt(curFolder.length()) == '/'))) {
                String tPath = path.replace(curFolder, "");
                if (tPath != null && tPath.length() > 0) {
                    tPath = (tPath.charAt(0) == '/') ? tPath.substring(1) : tPath;
                } else {
                    tPath = null;
                }
                return findTreeItem(tree, tPath, treeItem);
            }
        }
        return null;
    }

    /**
     * Expand Tree up to the element specified by <path>
     * 
     * @param treeViewer
     * @param path
     * @param item
     * @param treeExpandUpdater
     */
    public static void expandElement(final TreeViewer treeViewer, String path, final TreeItem item,
            ITreeExpandUpdater treeExpandUpdater) {
        TreeItem[] items;
        if (item == null) {
            items = treeViewer.getTree().getItems();
        } else {
            if (item != null && !(item.getData() instanceof RemoteFile) && !item.getExpanded()) {
                treeViewer.expandToLevel(item.getData(), 1);
                treeExpandUpdater.updateOnExpand(item);
                if (item.getItems().length > 0 && path != null) {
                    if (item.getItems()[0].getData() instanceof PendingUpdateAdapter) {
                        item.getItems()[0].addDisposeListener(
                                new PendingDisposeListener(treeViewer, path, item, treeExpandUpdater));
                    } else {
                        expandElement(treeViewer, path, item, treeExpandUpdater);
                    }
                    return;
                }
            }
            items = item.getItems();
        }

        if (path == null) {
            // treeViewer.getTree().setSelection(item);

            Utils.asyncExec(new Runnable() {
                public void run() {
                    treeViewer.getTree().setSelection(item);
                }
            }, treeViewer);
            // System.out.println("select: " + item.getText());
            // textSource.setMatch(textSource.newMatch);
            return;
        }
        for (TreeItem treeItem : items) {
            String curFolder = TreeUtils.getTreeItemName(treeItem);
            if (treeItem.getData() != null && path.startsWith(curFolder)
                    && ((path.length() == curFolder.length()) || (path.charAt(curFolder.length()) == '/'))) {
                String tPath = path.replace(curFolder, "");
                if (tPath != null && tPath.length() > 0) {
                    tPath = (tPath.charAt(0) == '/') ? tPath.substring(1) : tPath;
                } else {
                    tPath = null;
                }
                expandElement(treeViewer, tPath, treeItem, treeExpandUpdater);
                return;
            }
        }
    }

}

class PendingDisposeListener implements DisposeListener {
    private final TreeViewer treeViewer;
    private final String path;
    private final TreeItem item;
    private final ITreeExpandUpdater treeExpandUpdater;

    public PendingDisposeListener(TreeViewer treeViewer, String path, TreeItem item,
            ITreeExpandUpdater treeExpandUpdater) {
        this.treeViewer = treeViewer;
        this.path = path;
        this.item = item;
        this.treeExpandUpdater = treeExpandUpdater;
    }

    public void widgetDisposed(DisposeEvent e) {
        TreeUtils.expandElement(this.treeViewer, this.path, this.item, this.treeExpandUpdater);
    }
}