Java tutorial
/******************************************************************************* * Copyright (c) 2005, 2006 Subclipse project and others. * 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: * Subclipse project committers - initial API and implementation ******************************************************************************/ package org.tigris.subversion.subclipse.ui.history; import java.util.HashSet; import java.util.Set; import java.util.TreeMap; import org.eclipse.jface.resource.JFaceResources; import org.eclipse.jface.viewers.IColorProvider; import org.eclipse.jface.viewers.IContentProvider; import org.eclipse.jface.viewers.IFontProvider; import org.eclipse.jface.viewers.ITreeContentProvider; import org.eclipse.jface.viewers.LabelProvider; import org.eclipse.jface.viewers.TreeViewer; import org.eclipse.jface.viewers.Viewer; import org.eclipse.swt.SWT; import org.eclipse.swt.events.DisposeEvent; import org.eclipse.swt.events.DisposeListener; import org.eclipse.swt.graphics.Color; import org.eclipse.swt.graphics.Font; import org.eclipse.swt.graphics.FontData; import org.eclipse.swt.graphics.Image; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Display; import org.tigris.subversion.subclipse.core.ISVNRemoteResource; import org.tigris.subversion.subclipse.core.ISVNResource; import org.tigris.subversion.subclipse.core.SVNProviderPlugin; import org.tigris.subversion.subclipse.core.history.ILogEntry; import org.tigris.subversion.subclipse.core.history.LogEntryChangePath; import org.tigris.subversion.subclipse.ui.ISVNUIConstants; import org.tigris.subversion.subclipse.ui.Policy; import org.tigris.subversion.subclipse.ui.SVNUIPlugin; import org.tigris.subversion.svnclientadapter.SVNUrl; /** * Compressed folder representation of the affected paths panel. * * @author Eugene Kuleshov */ public class ChangePathsTreeViewer extends TreeViewer { ILogEntry currentLogEntry; Font currentPathFont; public ChangePathsTreeViewer(Composite parent, SVNHistoryPage page) { this(parent, new ChangePathsTreeContentProvider(page)); } public ChangePathsTreeViewer(Composite parent, IContentProvider contentProvider) { super(parent, SWT.BORDER | SWT.H_SCROLL | SWT.V_SCROLL | SWT.MULTI /*| SWT.FULL_SELECTION*/); GridData data = new GridData(GridData.FILL_BOTH); getControl().setLayoutData(data); getControl().addDisposeListener(new DisposeListener() { public void widgetDisposed(DisposeEvent e) { if (currentPathFont != null) { currentPathFont.dispose(); } } }); setLabelProvider(new ChangePathLabelProvider()); setContentProvider(contentProvider); } protected void inputChanged(Object input, Object oldInput) { super.inputChanged(input, oldInput); this.currentLogEntry = (ILogEntry) input; expandAll(); } /** * The label provider. */ class ChangePathLabelProvider extends LabelProvider implements IFontProvider, IColorProvider { public String getText(Object element) { if (element instanceof LogEntryChangePath) { LogEntryChangePath changePath = (LogEntryChangePath) element; String path = changePath.getPath(); int n = path.lastIndexOf('/'); if (n > -1) path = path.substring(n + 1); if (changePath.getCopySrcPath() == null) { return path; } return path + " [" + //$NON-NLS-1$ Policy.bind("ChangePathsTableProvider.copiedfrom", //$NON-NLS-1$ changePath.getCopySrcPath(), changePath.getCopySrcRevision().toString()) + "]"; } else if (element instanceof HistoryFolder) { HistoryFolder f = (HistoryFolder) element; if (f.getCopySrcPath() == null) { return f.getPath() + (f.getChildCount() == 0 ? "" : " [" + f.getChildCount() + "]"); } return f.getPath() + (f.getChildCount() == 0 ? " [" : " [" + f.getChildCount() + "] [") + Policy.bind("ChangePathsTableProvider.copiedfrom", //$NON-NLS-1$ f.getCopySrcPath(), f.getCopySrcRevision().toString()) + "]"; } return element.toString(); } public Image getImage(Object element) { String id = null; if (element instanceof LogEntryChangePath) { LogEntryChangePath changePath = (LogEntryChangePath) element; switch (changePath.getAction()) { case 'A': id = ISVNUIConstants.IMG_FILEADD_PENDING; break; case 'D': id = ISVNUIConstants.IMG_FILEDELETE_PENDING; break; // case 'M': default: id = ISVNUIConstants.IMG_FILEMODIFIED_PENDING; break; } } else if (element instanceof HistoryFolder) { HistoryFolder folder = (HistoryFolder) element; if (folder.getChildren().length == 0) { switch (folder.getAction()) { case 'A': id = ISVNUIConstants.IMG_FILEADD_PENDING; break; case 'D': id = ISVNUIConstants.IMG_FILEDELETE_PENDING; break; // case 'M': default: id = ISVNUIConstants.IMG_FILEMODIFIED_PENDING; break; } } else { switch (folder.getAction()) { case 'A': id = ISVNUIConstants.IMG_FOLDERADD_PENDING; break; case 'D': id = ISVNUIConstants.IMG_FOLDERDELETE_PENDING; break; case 'M': id = ISVNUIConstants.IMG_FOLDERMODIFIED_PENDING; break; default: id = ISVNUIConstants.IMG_FOLDER; break; } } } if (id == null) return null; return SVNUIPlugin.getImage(id); } /* * (non-Javadoc) * @see org.eclipse.jface.viewers.IFontProvider#getFont(java.lang.Object) */ public Font getFont(Object element) { if (element == null || currentLogEntry == null || !(element instanceof LogEntryChangePath)) { return null; } ISVNRemoteResource remoteResource = currentLogEntry.getRemoteResource(); if (remoteResource == null) { return null; } SVNUrl currentUrl = remoteResource.getUrl(); if (currentUrl == null) { return null; } SVNUrl url = ((LogEntryChangePath) element).getUrl(); if (currentUrl.equals(url)) { if (currentPathFont == null) { Font defaultFont = JFaceResources.getDefaultFont(); FontData[] data = defaultFont.getFontData(); for (int i = 0; i < data.length; i++) { data[i].setStyle(SWT.BOLD); } currentPathFont = new Font(getControl().getDisplay(), data); } return currentPathFont; } return null; } public Color getBackground(Object element) { return null; } public Color getForeground(Object element) { if (currentLogEntry == null) { return null; } ISVNResource resource = currentLogEntry.getResource(); if (resource == null) return null; boolean isPartOfSelection = false; if (element instanceof HistoryFolder) { HistoryFolder historyFolder = (HistoryFolder) element; isPartOfSelection = (resource.getRepository().getUrl().toString() + historyFolder.getPath()) .startsWith(currentLogEntry.getResource().getUrl().toString()); } if (element instanceof LogEntryChangePath) { LogEntryChangePath logEntryChangePath = (LogEntryChangePath) element; isPartOfSelection = (resource.getRepository().getUrl().toString() + logEntryChangePath.getPath()) .startsWith(currentLogEntry.getResource().getUrl().toString()); } if (!isPartOfSelection) return Display.getDefault().getSystemColor(SWT.COLOR_GRAY); return null; } } static final LogEntryChangePath[] EMPTY_CHANGE_PATHS = new LogEntryChangePath[0]; static class ChangePathsTreeContentProvider implements ITreeContentProvider { private final SVNHistoryPage page; ChangePathsTreeContentProvider(SVNHistoryPage page) { this.page = page; } public Object[] getChildren(Object parentElement) { if (page != null && !page.isShowChangePaths()) return null; if (parentElement instanceof HistoryFolder) { return ((HistoryFolder) parentElement).getChildren(); } return null; } public Object getParent(Object element) { return null; } public boolean hasChildren(Object element) { if (element instanceof HistoryFolder) { HistoryFolder folder = (HistoryFolder) element; return folder.getChildren().length > 0; } return false; } public Object[] getElements(Object inputElement) { if ((page != null && !this.page.isShowChangePaths()) || !(inputElement instanceof ILogEntry)) { return EMPTY_CHANGE_PATHS; } if (page != null && this.page.currentLogEntryChangePath != null) { } ILogEntry logEntry = (ILogEntry) inputElement; if (SVNProviderPlugin.getPlugin().getSVNClientManager().isFetchChangePathOnDemand()) { if (page != null && this.page.currentLogEntryChangePath != null) { return getGroups(this.page.currentLogEntryChangePath); } if (page != null) this.page.scheduleFetchChangePathJob(logEntry); return EMPTY_CHANGE_PATHS; } return getGroups(logEntry.getLogEntryChangePaths()); } private Object[] getGroups(LogEntryChangePath[] changePaths) { // 1st pass. Collect folder names Set folderNames = new HashSet(); for (int i = 0; i < changePaths.length; i++) { folderNames.add(getFolderName(changePaths[i])); } // 2nd pass. Sorting out explicitly changed folders TreeMap folders = new TreeMap(); for (int i = 0; i < changePaths.length; i++) { LogEntryChangePath changePath = changePaths[i]; String path = changePath.getPath(); if (folderNames.contains(path)) { // changed folder HistoryFolder folder = (HistoryFolder) folders.get(path); if (folder == null) { folder = new HistoryFolder(changePath); folders.put(path, folder); } } else { // changed resource path = getFolderName(changePath); HistoryFolder folder = (HistoryFolder) folders.get(path); if (folder == null) { folder = new HistoryFolder(path); folders.put(path, folder); } folder.add(changePath); } } return folders.values().toArray(new Object[folders.size()]); } private String getFolderName(LogEntryChangePath changePath) { String path = changePath.getPath(); int n = path.lastIndexOf('/'); return n > -1 ? path.substring(0, n) : path; } public void dispose() { } public void inputChanged(Viewer viewer, Object oldInput, Object newInput) { if (page != null) this.page.currentLogEntryChangePath = null; } } public void setCurrentLogEntry(ILogEntry currentLogEntry) { this.currentLogEntry = currentLogEntry; } }