Java tutorial
/****************************************************************************** * Copyright (c) 2011 GitHub 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: * Kevin Sawicki (GitHub Inc.) - initial API and implementation *****************************************************************************/ package org.eclipse.egit.ui.internal.dialogs; import java.text.MessageFormat; import java.util.ArrayList; import java.util.Collection; import java.util.HashMap; import java.util.List; import java.util.Map; import java.util.Map.Entry; import org.eclipse.egit.ui.internal.UIText; import org.eclipse.egit.ui.internal.WorkbenchStyledLabelProvider; import org.eclipse.jface.dialogs.IDialogConstants; import org.eclipse.jface.dialogs.MessageDialog; import org.eclipse.jface.layout.GridDataFactory; import org.eclipse.jface.layout.GridLayoutFactory; import org.eclipse.jface.resource.ImageDescriptor; import org.eclipse.jface.viewers.AbstractTreeViewer; import org.eclipse.jface.viewers.DelegatingStyledCellLabelProvider; import org.eclipse.jface.viewers.DelegatingStyledCellLabelProvider.IStyledLabelProvider; import org.eclipse.jface.viewers.StyledString; import org.eclipse.jface.viewers.TreeViewer; import org.eclipse.jface.viewers.ViewerSorter; import org.eclipse.jgit.api.MergeResult; import org.eclipse.jgit.merge.ResolveMerger.MergeFailureReason; import org.eclipse.jgit.revwalk.RevCommit; import org.eclipse.swt.SWT; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Control; import org.eclipse.swt.widgets.Shell; import org.eclipse.ui.ISharedImages; import org.eclipse.ui.PlatformUI; import org.eclipse.ui.model.WorkbenchAdapter; import org.eclipse.ui.model.WorkbenchContentProvider; /** * Dialog to display when a revert fails */ public class RevertFailureDialog extends MessageDialog { /** * Show dialog for failure result * * @param shell * @param commit * @param result */ public static void show(Shell shell, RevCommit commit, MergeResult result) { String message; Map<String, MergeFailureReason> reasons = result != null ? result.getFailingPaths() : null; if (reasons != null && !reasons.isEmpty()) message = MessageFormat.format(UIText.RevertFailureDialog_Message, commit.abbreviate(7).name()); else message = MessageFormat.format(UIText.RevertFailureDialog_MessageNoFiles, commit.abbreviate(7).name()); RevertFailureDialog dialog = new RevertFailureDialog(shell, message, reasons); dialog.setShellStyle(dialog.getShellStyle() | SWT.SHEET | SWT.RESIZE); dialog.open(); } private static class Path extends WorkbenchAdapter { private final String path; private Path(String path) { this.path = path; } public String getLabel(Object object) { return path; } public ImageDescriptor getImageDescriptor(Object object) { String name = new org.eclipse.core.runtime.Path(path).lastSegment(); if (name != null) { return PlatformUI.getWorkbench().getEditorRegistry().getImageDescriptor(name); } else return PlatformUI.getWorkbench().getSharedImages().getImageDescriptor(ISharedImages.IMG_OBJ_FILE); } public StyledString getStyledText(Object object) { int lastSlash = path.lastIndexOf('/'); StyledString styled = new StyledString(); if (lastSlash != -1 && lastSlash + 1 < path.length()) { String name = path.substring(lastSlash + 1); styled.append(name).append(' '); styled.append("- ", StyledString.QUALIFIER_STYLER); //$NON-NLS-1$ styled.append(path.substring(0, lastSlash), StyledString.QUALIFIER_STYLER); } else styled.append(path); return styled; } } private static class RevertFailure extends WorkbenchAdapter { private final MergeFailureReason reason; private final List<Path> paths; private RevertFailure(MergeFailureReason reason) { this.reason = reason; this.paths = new ArrayList<Path>(); } private RevertFailure add(String path) { paths.add(new Path(path)); return this; } public Object[] getChildren(Object object) { return paths.toArray(); } public String getLabel(Object object) { switch (reason) { case DIRTY_INDEX: return UIText.RevertFailureDialog_ReasonChangesInIndex; case DIRTY_WORKTREE: return UIText.RevertFailureDialog_ReasonChangesInWorkingDirectory; case COULD_NOT_DELETE: return UIText.RevertFailureDialog_ReasonDeleteFailure; default: return super.getLabel(object); } } public StyledString getStyledText(Object object) { StyledString styled = new StyledString(getLabel(object)); styled.append(' '); styled.append(MessageFormat.format("({0})", //$NON-NLS-1$ Integer.valueOf(paths.size())), StyledString.COUNTER_STYLER); return styled; } } private final Map<String, MergeFailureReason> reasons; /** * Create dialog for merge result * * @param shell * @param message * @param reasons */ public RevertFailureDialog(Shell shell, String message, Map<String, MergeFailureReason> reasons) { super(shell, UIText.RevertFailureDialog_Title, null, message, ERROR, new String[] { IDialogConstants.OK_LABEL }, 0); this.reasons = reasons; } protected Control createCustomArea(Composite parent) { if (reasons == null || reasons.isEmpty()) return null; Composite fileArea = new Composite(parent, SWT.NONE); GridDataFactory.fillDefaults().grab(true, true).hint(SWT.DEFAULT, 80).applyTo(fileArea); GridLayoutFactory.fillDefaults().applyTo(fileArea); TreeViewer viewer = new TreeViewer(fileArea); viewer.setAutoExpandLevel(AbstractTreeViewer.ALL_LEVELS); GridDataFactory.fillDefaults().grab(true, true).applyTo(viewer.getControl()); viewer.setContentProvider(new WorkbenchContentProvider() { public Object[] getElements(Object element) { return ((Collection) element).toArray(); } }); final IStyledLabelProvider styleProvider = new WorkbenchStyledLabelProvider() { public StyledString getStyledText(Object element) { // TODO Replace with use of IWorkbenchAdapter3 when is no longer // supported if (element instanceof RevertFailure) return ((RevertFailure) element).getStyledText(element); if (element instanceof Path) return ((Path) element).getStyledText(element); return super.getStyledText(element); } }; viewer.setLabelProvider(new DelegatingStyledCellLabelProvider(styleProvider)); viewer.setSorter(new ViewerSorter()); Map<MergeFailureReason, RevertFailure> failures = new HashMap<MergeFailureReason, RevertFailure>(); for (Entry<String, MergeFailureReason> reason : reasons.entrySet()) { RevertFailure failure = failures.get(reason.getValue()); if (failure == null) { failure = new RevertFailure(reason.getValue()); failures.put(reason.getValue(), failure); } failure.add(reason.getKey()); } viewer.setInput(failures.values()); return fileArea; } }