Java tutorial
/* * Copyright 2015 the original author or authors. * @https://github.com/scouter-project/scouter * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * */ package scouter.client.views; import java.util.ArrayList; import java.util.Enumeration; import java.util.List; import java.util.Properties; import org.eclipse.jface.action.Action; import org.eclipse.jface.action.IToolBarManager; import org.eclipse.jface.action.MenuManager; import org.eclipse.jface.layout.TableColumnLayout; import org.eclipse.jface.resource.ImageDescriptor; import org.eclipse.jface.viewers.ArrayContentProvider; import org.eclipse.jface.viewers.ColumnLabelProvider; import org.eclipse.jface.viewers.ColumnWeightData; import org.eclipse.jface.viewers.TableViewer; import org.eclipse.jface.viewers.TableViewerColumn; import org.eclipse.swt.SWT; import org.eclipse.swt.dnd.Clipboard; import org.eclipse.swt.dnd.TextTransfer; import org.eclipse.swt.dnd.Transfer; import org.eclipse.swt.events.ModifyEvent; import org.eclipse.swt.events.ModifyListener; import org.eclipse.swt.events.MouseAdapter; import org.eclipse.swt.events.MouseEvent; import org.eclipse.swt.events.SelectionAdapter; import org.eclipse.swt.events.SelectionEvent; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Event; import org.eclipse.swt.widgets.Group; import org.eclipse.swt.widgets.Label; import org.eclipse.swt.widgets.Listener; import org.eclipse.swt.widgets.Table; import org.eclipse.swt.widgets.TableColumn; import org.eclipse.swt.widgets.TableItem; import org.eclipse.swt.widgets.Text; import org.eclipse.ui.part.ViewPart; import scouter.client.Images; import scouter.client.popup.EditableMessageDialog; import scouter.client.sorter.ColumnLabelSorter; import scouter.client.util.ExUtil; import scouter.client.util.ImageUtil; import scouter.util.StringUtil; public class ClientEnvView extends ViewPart { public static final String ID = ClientEnvView.class.getName(); private Text filterTxt; private TableViewer viewer; private TableColumnLayout tableColumnLayout; Composite parent; private Clipboard clipboard; @Override public void createPartControl(Composite parent) { this.parent = parent; initialLayout(); clipboard = new Clipboard(null); IToolBarManager man = getViewSite().getActionBars().getToolBarManager(); man.add(new Action("Reload", ImageUtil.getImageDescriptor(Images.refresh)) { public void run() { load(); } }); load(); } private void initialLayout() { Composite composite = new Composite(parent, SWT.NONE); composite.setLayout(new GridLayout(1, true)); createUpperMenu(composite); Composite tableComposite = new Composite(composite, SWT.NONE); tableComposite.setLayoutData(new GridData(GridData.FILL, GridData.FILL, true, true)); tableComposite.setLayout(new GridLayout(1, true)); createTableViewer(tableComposite); } private void createTableViewer(Composite composite) { viewer = new TableViewer(composite, SWT.MULTI | SWT.FULL_SELECTION | SWT.BORDER); tableColumnLayout = new TableColumnLayout(); composite.setLayout(tableColumnLayout); createColumns(); final Table table = viewer.getTable(); table.setHeaderVisible(true); table.setLinesVisible(true); createTableContextMenu(); viewer.setContentProvider(new ArrayContentProvider()); viewer.setComparator(new ColumnLabelSorter(viewer)); GridData gridData = new GridData(GridData.FILL, GridData.FILL, true, true); viewer.getControl().setLayoutData(gridData); } private void createTableContextMenu() { MenuManager manager = new MenuManager(); viewer.getControl().setMenu(manager.createContextMenu(viewer.getControl())); manager.add(new Action("&Copy", ImageDescriptor.createFromImage(Images.copy)) { public void run() { selectionCopyToClipboard(); } }); viewer.getTable().addListener(SWT.KeyDown, new Listener() { public void handleEvent(Event e) { if (e.stateMask == SWT.CTRL) { if (e.keyCode == 'c' || e.keyCode == 'C') { selectionCopyToClipboard(); } } } }); viewer.getTable().addMouseListener(new MouseAdapter() { public void mouseDoubleClick(MouseEvent e) { TableItem[] items = viewer.getTable().getSelection(); if (items != null && items.length > 0) { VariableData data = (VariableData) items[0].getData(); new EditableMessageDialog().show(data.name, data.value); } } }); } private void selectionCopyToClipboard() { if (viewer != null) { TableItem[] items = viewer.getTable().getSelection(); if (items != null && items.length > 0) { StringBuffer sb = new StringBuffer(); for (int i = 0; i < items.length; i++) { VariableData data = (VariableData) items[i].getData(); sb.append(data.toString()); } clipboard.setContents(new Object[] { sb.toString() }, new Transfer[] { TextTransfer.getInstance() }); } } } ArrayList<VariableData> variableList; private void load() { ExUtil.asyncRun(new Runnable() { public void run() { variableList = new ArrayList<VariableData>(); Properties p = System.getProperties(); @SuppressWarnings("rawtypes") Enumeration en = p.keys(); while (en.hasMoreElements()) { VariableData data = new VariableData(); variableList.add(data); data.name = (String) en.nextElement(); ; data.value = p.getProperty(data.name); } ExUtil.exec(viewer.getTable(), new Runnable() { public void run() { viewer.setInput(variableList); } }); } }); } private void createUpperMenu(Composite composite) { Group parentGroup = new Group(composite, SWT.NONE); parentGroup.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, false)); GridLayout layout = new GridLayout(4, true); parentGroup.setLayout(layout); Label dummyLabel = new Label(parentGroup, SWT.NONE); dummyLabel = new Label(parentGroup, SWT.NONE); dummyLabel = new Label(parentGroup, SWT.NONE); dummyLabel.setLayoutData(new GridData()); filterTxt = new Text(parentGroup, SWT.BORDER); filterTxt.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, true)); filterTxt.addModifyListener(new ModifyListener() { public void modifyText(ModifyEvent e) { String searchText = filterTxt.getText(); if (StringUtil.isEmpty(searchText)) { viewer.setInput(variableList); } else { searchText = searchText.toLowerCase(); List<VariableData> tempList = new ArrayList<VariableData>(); for (VariableData data : variableList) { String name = data.name.toLowerCase(); String value = data.value.toLowerCase(); if (name.contains(searchText) || value.contains(searchText)) { tempList.add(data); } } viewer.setInput(tempList); } } }); } private void createColumns() { for (VariableEnum column : VariableEnum.values()) { TableViewerColumn c = createTableViewerColumn(column.getTitle(), column.getWidth(), column.getAlignment(), column.isResizable(), column.isMoveable(), column.isNumber()); ColumnLabelProvider labelProvider = null; switch (column) { case NAME: labelProvider = new ColumnLabelProvider() { @Override public String getText(Object element) { if (element instanceof VariableData) { return ((VariableData) element).name; } return null; } }; break; case VALUE: labelProvider = new ColumnLabelProvider() { @Override public String getText(Object element) { if (element instanceof VariableData) { return ((VariableData) element).value; } return null; } }; break; } if (labelProvider != null) { c.setLabelProvider(labelProvider); } } } private TableViewerColumn createTableViewerColumn(String title, int width, int alignment, boolean resizable, boolean moveable, final boolean isNumber) { final TableViewerColumn viewerColumn = new TableViewerColumn(viewer, SWT.NONE); final TableColumn column = viewerColumn.getColumn(); column.setText(title); column.setAlignment(alignment); column.setMoveable(moveable); tableColumnLayout.setColumnData(column, new ColumnWeightData(30, width, resizable)); column.setData("isNumber", isNumber); column.addSelectionListener(new SelectionAdapter() { public void widgetSelected(SelectionEvent e) { ColumnLabelSorter sorter = (ColumnLabelSorter) viewer.getComparator(); TableColumn selectedColumn = (TableColumn) e.widget; sorter.setColumn(selectedColumn); } }); return viewerColumn; } @Override public void setFocus() { } enum VariableEnum { NAME("Name", 50, SWT.LEFT, true, true, false), // VALUE("Value", 50, SWT.LEFT, true, true, false); private final String title; private final int width; private final int alignment; private final boolean resizable; private final boolean moveable; private final boolean isNumber; private VariableEnum(String text, int width, int alignment, boolean resizable, boolean moveable, boolean isNumber) { this.title = text; this.width = width; this.alignment = alignment; this.resizable = resizable; this.moveable = moveable; this.isNumber = isNumber; } public String getTitle() { return title; } public int getAlignment() { return alignment; } public boolean isResizable() { return resizable; } public boolean isMoveable() { return moveable; } public int getWidth() { return width; } public boolean isNumber() { return this.isNumber; } } class VariableData { public String name; public String value; public String toString() { return name + "\t" + value + "\n"; } } }