Java tutorial
/******************************************************************************* * Copyright (c) 2009 the CHISEL group and contributors. * 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: * the CHISEL group - initial API and implementation *******************************************************************************/ package ca.uvic.chisel.javasketch.ui.internal.search; import java.text.DateFormat; import java.util.Calendar; import java.util.List; import org.eclipse.core.resources.IProject; import org.eclipse.debug.core.ILaunchConfiguration; import org.eclipse.jdt.ui.ISharedImages; import org.eclipse.jdt.ui.JavaUI; import org.eclipse.jface.viewers.IBaseLabelProvider; import org.eclipse.jface.viewers.StyledCellLabelProvider; import org.eclipse.jface.viewers.ViewerCell; import org.eclipse.search.ui.text.Match; import org.eclipse.swt.SWT; import org.eclipse.swt.custom.StyleRange; import org.eclipse.swt.graphics.Color; import org.eclipse.swt.graphics.Image; import org.eclipse.ui.model.WorkbenchLabelProvider; import ca.uvic.chisel.javasketch.IProgramSketch; import ca.uvic.chisel.javasketch.SketchPlugin; import ca.uvic.chisel.javasketch.data.model.IActivation; import ca.uvic.chisel.javasketch.data.model.IThread; import ca.uvic.chisel.javasketch.data.model.ITrace; import ca.uvic.chisel.javasketch.data.model.ITraceClassMethod; import ca.uvic.chisel.javasketch.data.model.ITraceModel; import ca.uvic.chisel.javasketch.data.model.ITraceModelProxy; import ca.uvic.chisel.javasketch.ui.ISketchImageConstants; import ca.uvic.chisel.javasketch.ui.internal.presentation.metadata.PresentationData; import ca.uvic.chisel.javasketch.ui.internal.views.ParentedCalendar; import ca.uvic.chisel.widgets.TimeField; /** * @author Del Myers * */ public class TraceSearchResultLabelProvider extends StyledCellLabelProvider implements IBaseLabelProvider { private WorkbenchLabelProvider wbProvider; /** * */ public TraceSearchResultLabelProvider() { wbProvider = new WorkbenchLabelProvider(); } /* (non-Javadoc) * @see org.eclipse.jface.viewers.ITableLabelProvider#getColumnImage(java.lang.Object, int) */ public Image getColumnImage(Object element, int columnIndex) { switch (columnIndex) { case 0: return getImage(element); } return null; } public Image getImage(Object element) { if (element instanceof IProgramSketch) { String key = ISketchImageConstants.ICON_PROCESS_TRACE; return SketchPlugin.getDefault().getImageRegistry().get(key); } else if (element instanceof IThread) { return SketchPlugin.getDefault().getImageRegistry().get(ISketchImageConstants.ICON_THREAD_TRACE); } else if (element instanceof ILaunchConfiguration) { return SketchPlugin.getDefault().getImageRegistry().get(ISketchImageConstants.ICON_TRACE); } else if (element instanceof ParentedCalendar) { return SketchPlugin.getDefault().getImageRegistry().get(ISketchImageConstants.ICON_CALENDAR); } else if (element instanceof ITraceModel) { switch (((ITraceModel) element).getKind()) { case ITraceModel.TRACE_CLASS: return JavaUI.getSharedImages().getImage(ISharedImages.IMG_OBJS_CLASS); case ITraceModel.TRACE_CLASS_METHOD: return JavaUI.getSharedImages().getImage(ISharedImages.IMG_OBJS_PUBLIC); case ITraceModel.ACTIVATION: return SketchPlugin.getDefault().getImageRegistry().get(ISketchImageConstants.ICON_ACTIVATION); case ITraceModel.TRACE: return SketchPlugin.getDefault().getImageRegistry().get(ISketchImageConstants.ICON_TRACE); } } else if (element instanceof List<?>) { return SketchPlugin.getDefault().getImageRegistry().get(ISketchImageConstants.ICON_ANNOTATIONS); } else if (element instanceof Match) { return SketchPlugin.getDefault().getImageRegistry().get(ISketchImageConstants.ICON_ANNOTATION); } return null; } /* (non-Javadoc) * @see org.eclipse.jface.viewers.ITableLabelProvider#getColumnText(java.lang.Object, int) */ public String getColumnText(Object element, int columnIndex) { if (element instanceof ITraceModel) { ITraceModel mElement = (ITraceModel) element; switch (columnIndex) { case 0: return getText(element); case 1: switch (mElement.getKind()) { case ITraceModel.ACTIVATION: return "Activation"; case ITraceModel.TRACE_CLASS: return "Class"; case ITraceModel.TRACE_CLASS_METHOD: return "Method"; case ITraceModel.THREAD: return "Thread"; case ITraceModel.TRACE: return "Trace"; } if ((mElement.getKind() & ITraceModel.MESSAGE) != 0) { return "Message"; } break; case 2: return getText(mElement.getTrace()); } } else if (element instanceof IProgramSketch) { IProgramSketch sketch = (IProgramSketch) element; switch (columnIndex) { case 0: return getText(element); case 1: return "Traced Launch"; case 2: return getText(sketch.getTraceData()); } } else if (element instanceof List<?>) { if (columnIndex == 0) { return "Notes"; } } return ""; } public String getText(Object element) { if (element instanceof IThread) { IThread thread = (IThread) element; return thread.getName() + " (" + thread.getID() + ")"; } else if (element instanceof IProgramSketch) { IProgramSketch sketch = (IProgramSketch) element; DateFormat timeFormat = DateFormat.getTimeInstance(DateFormat.SHORT); return sketch.getLabel() + " " + timeFormat.format(sketch.getProcessTime()); } else if (element instanceof IProject) { return ((IProject) element).getName(); } else if (element instanceof ParentedCalendar) { Calendar day = ((ParentedCalendar) element).getCalendar(); DateFormat format = DateFormat.getDateInstance(DateFormat.MEDIUM); return format.format(day.getTime()); } else if (element instanceof ITraceModel) { switch (((ITraceModel) element).getKind()) { case ITraceModel.ACTIVATION: long time = ((IActivation) element).getTime(); return "Activated at " + TimeField.toString(time); case ITraceModel.TRACE: String lid = ((ITrace) element).getLaunchID(); int dot = lid.lastIndexOf('.'); if (dot > 0) { lid = lid.substring(0, dot); } return lid; case ITraceModel.TRACE_CLASS_METHOD: return ((ITraceClassMethod) element).getName(); } } return element.toString(); } /* (non-Javadoc) * @see org.eclipse.jface.viewers.BaseLabelProvider#dispose() */ @Override public void dispose() { wbProvider.dispose(); super.dispose(); } /* (non-Javadoc) * @see org.eclipse.jface.viewers.CellLabelProvider#update(org.eclipse.jface.viewers.ViewerCell) */ @Override public void update(ViewerCell cell) { Object element = cell.getElement(); int columnIndex = cell.getColumnIndex(); cell.setImage(getColumnImage(element, columnIndex)); if (element instanceof Match) { String text = ""; switch (columnIndex) { case 0: setMatchText(cell); break; case 1: ITraceModelProxy mElement = (ITraceModelProxy) ((Match) element).getElement(); switch (mElement.getKind()) { case ITraceModel.ACTIVATION: text = "Activation"; break; case ITraceModel.TRACE_CLASS: text = "Class"; break; case ITraceModel.TRACE_CLASS_METHOD: text = "Method"; break; case ITraceModel.THREAD: text = "Thread"; break; case ITraceModel.TRACE: text = "Trace"; break; } if ((mElement.getKind() & ITraceModel.MESSAGE) == ITraceModel.MESSAGE) { text = "Message"; } cell.setText(text); } } else { cell.setText(getColumnText(element, columnIndex)); } } /** * @param cell */ private void setMatchText(ViewerCell cell) { Match match = (Match) cell.getElement(); ITraceModelProxy proxy = (ITraceModelProxy) match.getElement(); IProgramSketch sketch = SketchPlugin.getDefault().getSketch(proxy.getTrace()); PresentationData pd = PresentationData.connect(sketch); try { String annotation = pd.getAnnotation(proxy.getElementId()); if (annotation != null) { annotation = annotation.replaceAll("\\s+", " "); if (annotation.length() >= match.getOffset() + match.getLength()) { int summaryOffset = 0; String summary = annotation.substring(match.getOffset(), match.getOffset() + match.getLength()); StringBuilder builder = new StringBuilder(summary); int wordCount = 0; int index = match.getOffset() - 1; while (wordCount < 3 && index >= 0) { char c = annotation.charAt(index); if (Character.isWhitespace(c)) { wordCount++; if (wordCount > 3) { break; } } builder.insert(0, c); summaryOffset++; index--; } if (index >= 0) { builder.insert(0, "..."); summaryOffset += 3; } index = match.getOffset() + match.getLength(); wordCount = 0; while (wordCount < 3 && index < annotation.length()) { char c = annotation.charAt(index); if (Character.isWhitespace(c)) { wordCount++; if (wordCount > 3) { break; } } builder.append(c); index++; } if (index < annotation.length()) { builder.append("..."); } cell.setText(builder.toString()); Color fg = cell.getForeground(); Color bg = cell.getFont().getDevice().getSystemColor(SWT.COLOR_YELLOW); StyleRange range = new StyleRange(summaryOffset, match.getLength(), fg, bg); cell.setStyleRanges(new StyleRange[] { range }); } } } finally { pd.disconnect(); } } }