de.carne.swt.widgets.logview.LogViewUI Maven / Gradle / Ivy
/*
* Copyright (c) 2007-2020 Holger de Carne and contributors, All Rights Reserved.
*
* This program 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.
*
* This program 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 this program. If not, see logoMap;
private final Late logTableHolder = new Late<>();
public LogViewUI(Shell root, Logger logger, NavigableMap logoMap) {
super(root);
this.resources = ResourceTracker.forDevice(root.getDisplay()).forShell(root);
this.logger = logger;
this.logoMap = logoMap;
}
@Override
public void open() throws ResourceException {
ShellBuilder rootBuilder = buildRoot();
rootBuilder.pack();
rootBuilder.position(SWT.CENTER, SWT.CENTER);
Shell root = rootBuilder.get();
root.setMinimumSize(root.getSize());
root.open();
}
private ShellBuilder buildRoot() {
// Setup all widgets
ShellBuilder rootBuilder = new ShellBuilder(root());
CompositeBuilder logTable = rootBuilder.addCompositeChild(Table.class,
SWT.H_SCROLL | SWT.V_SCROLL | SWT.BORDER);
CompositeBuilder buttons = rootBuilder.addCompositeChild(SWT.NONE);
rootBuilder.withText(LogViewI18N.i18nTitle()).withDefaultImages();
rootBuilder.onDisposed(() -> LogBuffer.removeHandler(this.logger, this.logHandler));
buildLogTable(logTable);
buildButtons(buttons);
// Populate log table
String loggerName = this.logger.getName();
LOG.notice("Viewing log: ''{0}''...", (Strings.notEmpty(loggerName) ? loggerName : ""));
LogBuffer logBuffer = LogBuffer.get(this.logger);
if (logBuffer == null) {
throw new IllegalStateException("LogBuffer not configured");
}
logBuffer.addHandler(this.logHandler, true);
// Layout UI
for (TableColumn logTableColumn : this.logTableHolder.get().getColumns()) {
logTableColumn.pack();
}
Point logTableSize = logTable.get().computeSize(SWT.DEFAULT, SWT.DEFAULT);
logTableSize.x = Math.min(logTableSize.x, MAX_PREFERRED_WIDTH);
logTableSize.y = Math.min(logTableSize.y, MAX_PREFERRED_HEIGHT);
GridLayoutBuilder.layout(1).apply(rootBuilder);
GridLayoutBuilder.data(GridData.FILL_BOTH).preferredSize(logTableSize.x, logTableSize.y).apply(logTable);
GridLayoutBuilder.data(GridData.FILL_HORIZONTAL).align(SWT.END, SWT.CENTER).apply(buttons);
return rootBuilder;
}
private void buildLogTable(CompositeBuilder logTable) {
Table logTableControl = this.logTableHolder.set(logTable);
logTableControl.setHeaderVisible(true);
logTableControl.setLinesVisible(true);
TableColumn levelColumn = new TableColumn(logTableControl, SWT.NONE);
TableColumn timeColumn = new TableColumn(logTableControl, SWT.NONE);
TableColumn messageColumn = new TableColumn(logTableControl, SWT.NONE);
levelColumn.setText(LogViewI18N.i18nLabelLevel());
timeColumn.setText(LogViewI18N.i18nLabelTime());
messageColumn.setText(LogViewI18N.i18nLabelMessage());
}
private void buildButtons(CompositeBuilder buttons) {
ButtonBuilder clearButton = buttons.addButtonChild(SWT.PUSH);
ButtonBuilder exportButton = buttons.addButtonChild(SWT.PUSH);
ButtonBuilder closeButton = buttons.addButtonChild(SWT.PUSH);
clearButton.withText(LogViewI18N.i18nButtonClear());
clearButton.onSelected(this::onClear);
exportButton.withText(LogViewI18N.i18nButtonExport());
exportButton.onSelected(this::onExport);
closeButton.withText(LogViewI18N.i18nButtonClose());
closeButton.onSelected(() -> root().close());
root().setDefaultButton(closeButton.get());
RowLayoutBuilder.layout().fill(true).apply(buttons);
RowLayoutBuilder.data().apply(clearButton);
RowLayoutBuilder.data().apply(exportButton);
RowLayoutBuilder.data().apply(closeButton);
}
private void onClear() {
LogBuffer.flush(this.logger);
this.logTableHolder.get().removeAll();
LOG.notice("Log cleared");
}
private void onExport() {
try {
FileDialog fileDialog = FileDialogBuilder.save(get()).withFilter("*.log")
.withFileName(Display.getAppName() + ".log").get();
String fileName = fileDialog.open();
if (fileName != null) {
LogBuffer.exportTo(this.logger, new File(fileName), false);
}
} catch (Exception e) {
LOG.error(e, "Failed to export log");
}
}
void publish(LogRecord record) {
Display display = get().getDisplay();
if (Thread.currentThread().equals(display.getThread())) {
Table logTable = this.logTableHolder.get();
int itemCount = logTable.getItemCount();
while (itemCount > MAX_ENTRIES) {
logTable.remove(0);
itemCount--;
}
TableItem logTableItem = new TableItem(logTable, SWT.NONE);
if (this.logoMap.isEmpty()) {
logTableItem.setText(0, record.getLevel().getLocalizedName());
} else {
Map.Entry logoEntry = this.logoMap.floorEntry(record.getLevel().intValue());
if (logoEntry != null) {
logTableItem.setImage(this.resources.getImage(logoEntry.getValue()));
}
}
logTableItem.setText(1, LOG_LINE_FORMATTER.formatMillis(record));
logTableItem.setText(2, LOG_LINE_FORMATTER.formatMessage(record));
int selection = logTable.getSelectionIndex();
if (selection == -1 || (selection + 1) == itemCount) {
logTable.select(itemCount);
logTable.setTopIndex(itemCount);
}
logTableItem.setData(record);
} else {
display.syncExec(() -> publish(record));
}
}
private class LogHandler extends Handler {
private final AtomicBoolean locked = new AtomicBoolean();
LogHandler() {
// Nothing to do here
}
@Override
public void publish(LogRecord record) {
if (this.locked.compareAndSet(false, true)) {
try {
LogViewUI.this.publish(record);
} finally {
this.locked.set(false);
}
}
}
@Override
public void flush() {
// Nothing to here
}
@Override
public void close() {
// Nothing to here
}
}
}
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