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import java.text.MessageFormat;
import java.util.MissingResourceException;
import java.util.ResourceBundle;
import java.util.Vector;
import org.eclipse.swt.SWT;
import org.eclipse.swt.custom.CCombo;
import org.eclipse.swt.custom.SashForm;
import org.eclipse.swt.custom.StyledText;
import org.eclipse.swt.custom.TableEditor;
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.events.SelectionListener;
import org.eclipse.swt.events.ShellAdapter;
import org.eclipse.swt.events.ShellEvent;
import org.eclipse.swt.events.TraverseEvent;
import org.eclipse.swt.events.TraverseListener;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.graphics.Rectangle;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.layout.FormAttachment;
import org.eclipse.swt.layout.FormData;
import org.eclipse.swt.layout.FormLayout;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.layout.RowData;
import org.eclipse.swt.layout.RowLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Canvas;
import org.eclipse.swt.widgets.Combo;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.CoolBar;
import org.eclipse.swt.widgets.CoolItem;
import org.eclipse.swt.widgets.Dialog;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Group;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.List;
import org.eclipse.swt.widgets.Menu;
import org.eclipse.swt.widgets.MenuItem;
import org.eclipse.swt.widgets.ProgressBar;
import org.eclipse.swt.widgets.Scale;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Slider;
import org.eclipse.swt.widgets.TabFolder;
import org.eclipse.swt.widgets.TabItem;
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.swt.widgets.ToolBar;
import org.eclipse.swt.widgets.ToolItem;
import org.eclipse.swt.widgets.Tree;
import org.eclipse.swt.widgets.TreeItem;
public class LayoutExample {
private TabFolder tabFolder;
/**
* Creates an instance of a LayoutExample embedded inside the supplied
* parent Composite.
*
* @param parent
* the container of the example
*/
public LayoutExample(Composite parent) {
tabFolder = new TabFolder(parent, SWT.NULL);
Tab[] tabs = new Tab[] { new FillLayoutTab(this),
new RowLayoutTab(this), new GridLayoutTab(this),
new FormLayoutTab(this), };
for (int i = 0; i < tabs.length; i++) {
TabItem item = new TabItem(tabFolder, SWT.NULL);
item.setText(tabs[i].getTabText());
item.setControl(tabs[i].createTabFolderPage(tabFolder));
}
}
/**
* Grabs input focus.
*/
public void setFocus() {
tabFolder.setFocus();
}
/**
* Disposes of all resources associated with a particular instance of the
* LayoutExample.
*/
public void dispose() {
tabFolder = null;
}
/**
* Invokes as a standalone program.
*/
public static void main(String[] args) {
final Display display = new Display();
final Shell shell = new Shell(display);
shell.setLayout(new FillLayout());
new LayoutExample(shell);
shell.setText(getResourceString("window.title"));
shell.addShellListener(new ShellAdapter() {
public void shellClosed(ShellEvent e) {
Shell[] shells = display.getShells();
for (int i = 0; i < shells.length; i++) {
if (shells[i] != shell)
shells[i].close();
}
}
});
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch())
display.sleep();
}
}
/**
* Gets a string from the resource bundle. We don't want to crash because of
* a missing String. Returns the key if not found.
*/
static String getResourceString(String key) {
return key;
}
/**
* Gets a string from the resource bundle and binds it with the given
* arguments. If the key is not found, return the key.
*/
static String getResourceString(String key, Object[] args) {
try {
return MessageFormat.format(getResourceString(key), args);
} catch (MissingResourceException e) {
return key;
} catch (NullPointerException e) {
return "!" + key + "!";
}
}
}
/*******************************************************************************
* Copyright (c) 2000, 2003 IBM Corporation 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: IBM Corporation - initial API and implementation
******************************************************************************/
/**
* <code>Tab</code> is the abstract superclass of every page in the example's
* tab folder. Each page in the tab folder displays a layout, and allows the
* user to manipulate the layout.
*
* A typical page in a Tab contains a two column composite. The left column
* contains the layout group, which contains the "layout composite" (the one
* that has the example layout). The right column contains the "control" group.
* The "control" group allows the user to interact with the example. Typical
* operations are modifying layout parameters, adding children to the "layout
* composite", and modifying child layout data. The "Code" button in the
* "control" group opens a new window containing code that will regenerate the
* layout. This code (or parts of it) can be selected and copied to the
* clipboard.
*/
abstract class Tab {
/* Common groups and composites */
Composite tabFolderPage;
SashForm sash;
Group layoutGroup, controlGroup, childGroup;
/* The composite that contains the example layout */
Composite layoutComposite;
/* Common controls for modifying the example layout */
String[] names;
Control[] children;
Button size, add, delete, clear, code;
/* Common values for working with TableEditors */
Table table;
int index;
TableItem newItem, lastSelected;
Vector data = new Vector();
/* Controlling instance */
final LayoutExample instance;
/* Listeners */
SelectionListener selectionListener = new SelectionAdapter() {
public void widgetSelected(SelectionEvent e) {
resetEditors();
}
};
TraverseListener traverseListener = new TraverseListener() {
public void keyTraversed(TraverseEvent e) {
if (e.detail == SWT.TRAVERSE_RETURN) {
e.doit = false;
resetEditors();
}
}
};
/**
* Creates the Tab within a given instance of LayoutExample.
*/
Tab(LayoutExample instance) {
this.instance = instance;
}
/**
* Creates the "child" group. This is the group that allows you to add
* children to the layout. It exists within the controlGroup.
*/
void createChildGroup() {
childGroup = new Group(controlGroup, SWT.NONE);
childGroup.setText(LayoutExample.getResourceString("Children"));
GridLayout layout = new GridLayout();
layout.numColumns = 3;
childGroup.setLayout(layout);
GridData data = new GridData(GridData.FILL_BOTH);
data.horizontalSpan = 2;
childGroup.setLayoutData(data);
createChildWidgets();
}
/**
* Creates the controls for modifying the "children" table, and the table
* itself. Subclasses override this method to augment the standard table.
*/
void createChildWidgets() {
/* Controls for adding and removing children */
add = new Button(childGroup, SWT.PUSH);
add.setText(LayoutExample.getResourceString("Add"));
add.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
delete = new Button(childGroup, SWT.PUSH);
delete.setText(LayoutExample.getResourceString("Delete"));
delete.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
delete.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent e) {
resetEditors();
int[] selected = table.getSelectionIndices();
table.remove(selected);
/* Refresh the control indices of the table */
for (int i = 0; i < table.getItemCount(); i++) {
table.getItem(i).setText(0, String.valueOf(i));
}
refreshLayoutComposite();
layoutComposite.layout(true);
layoutGroup.layout(true);
}
});
clear = new Button(childGroup, SWT.PUSH);
clear.setText(LayoutExample.getResourceString("Clear"));
clear.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
clear.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent e) {
resetEditors();
children = layoutComposite.getChildren();
for (int i = 0; i < children.length; i++) {
children[i].dispose();
}
table.removeAll();
data.clear();
children = new Control[0];
layoutGroup.layout(true);
}
});
/* Create the "children" table */
table = new Table(childGroup, SWT.MULTI | SWT.BORDER | SWT.H_SCROLL
| SWT.V_SCROLL | SWT.FULL_SELECTION | SWT.HIDE_SELECTION);
table.setLinesVisible(true);
table.setHeaderVisible(true);
GridData gridData = new GridData(GridData.FILL_BOTH);
gridData.horizontalSpan = 3;
gridData.heightHint = 150;
table.setLayoutData(gridData);
table.addTraverseListener(traverseListener);
/* Add columns to the table */
String[] columnHeaders = getLayoutDataFieldNames();
for (int i = 0; i < columnHeaders.length; i++) {
TableColumn column = new TableColumn(table, SWT.NONE);
column.setText(columnHeaders[i]);
if (i == 0)
column.setWidth(20);
else if (i == 1)
column.setWidth(80);
else
column.pack();
}
}
/**
* Creates the TableEditor with a CCombo in the first column of the table.
* This CCombo lists all the controls that the user can select to place on
* their layout.
*/
void createComboEditor(CCombo combo, TableEditor comboEditor) {
combo.setItems(new String[] { "Button", "Canvas", "Combo", "Composite",
"CoolBar", "Group", "Label", "List", "ProgressBar", "Scale",
"Slider", "StyledText", "Table", "Text", "ToolBar", "Tree" });
combo.setText(newItem.getText(1));
/* Set up editor */
comboEditor.horizontalAlignment = SWT.LEFT;
comboEditor.grabHorizontal = true;
comboEditor.minimumWidth = 50;
comboEditor.setEditor(combo, newItem, 1);
/* Add listener */
combo.addTraverseListener(new TraverseListener() {
public void keyTraversed(TraverseEvent e) {
if (e.detail == SWT.TRAVERSE_TAB_NEXT
|| e.detail == SWT.TRAVERSE_RETURN) {
resetEditors();
}
if (e.detail == SWT.TRAVERSE_ESCAPE) {
disposeEditors();
}
}
});
}
/**
* Creates the "control" group. This is the group on the right half of each
* example tab. It contains controls for adding new children to the
* layoutComposite, and for modifying the children's layout data.
*/
void createControlGroup() {
controlGroup = new Group(sash, SWT.NONE);
controlGroup.setText(LayoutExample.getResourceString("Parameters"));
GridLayout layout = new GridLayout();
layout.numColumns = 2;
controlGroup.setLayout(layout);
size = new Button(controlGroup, SWT.CHECK);
size.setText(LayoutExample.getResourceString("Preferred_Size"));
size.setSelection(false);
size.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent e) {
resetEditors();
if (size.getSelection()) {
layoutComposite.setLayoutData(new GridData());
layoutGroup.layout(true);
} else {
layoutComposite.setLayoutData(new GridData(
GridData.FILL_BOTH));
layoutGroup.layout(true);
}
}
});
GridData data = new GridData(GridData.FILL_HORIZONTAL);
data.horizontalSpan = 2;
size.setLayoutData(data);
createControlWidgets();
}
/**
* Creates the "control" widget children. Subclasses override this method to
* augment the standard controls created.
*/
void createControlWidgets() {
createChildGroup();
code = new Button(controlGroup, SWT.PUSH);
code.setText(LayoutExample.getResourceString("Code"));
GridData gridData = new GridData(GridData.HORIZONTAL_ALIGN_CENTER
| GridData.GRAB_HORIZONTAL);
gridData.horizontalSpan = 2;
code.setLayoutData(gridData);
code.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent e) {
final Shell shell = new Shell();
shell
.setText(LayoutExample
.getResourceString("Generated_Code"));
shell.setLayout(new FillLayout());
final StyledText text = new StyledText(shell, SWT.BORDER
| SWT.MULTI | SWT.V_SCROLL | SWT.H_SCROLL);
String layoutCode = generateCode().toString();
if (layoutCode.length() == 0)
return;
text.setText(layoutCode);
Menu bar = new Menu(shell, SWT.BAR);
shell.setMenuBar(bar);
MenuItem editItem = new MenuItem(bar, SWT.CASCADE);
editItem.setText(LayoutExample.getResourceString("Edit"));
Menu menu = new Menu(bar);
MenuItem select = new MenuItem(menu, SWT.PUSH);
select.setText(LayoutExample.getResourceString("Select_All"));
select.setAccelerator(SWT.MOD1 + 'A');
select.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent e) {
text.selectAll();
}
});
MenuItem copy = new MenuItem(menu, SWT.PUSH);
copy.setText(LayoutExample.getResourceString("Copy"));
copy.setAccelerator(SWT.MOD1 + 'C');
copy.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent e) {
text.copy();
}
});
MenuItem exit = new MenuItem(menu, SWT.PUSH);
exit.setText(LayoutExample.getResourceString("Exit"));
exit.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent e) {
shell.close();
}
});
editItem.setMenu(menu);
shell.pack();
shell.setSize(400, 500);
shell.open();
Display display = shell.getDisplay();
while (!shell.isDisposed())
if (!display.readAndDispatch())
display.sleep();
}
});
}
/**
* Creates the example layout. Subclasses override this method.
*/
void createLayout() {
}
/**
* Creates the composite that contains the example layout.
*/
void createLayoutComposite() {
layoutComposite = new Composite(layoutGroup, SWT.BORDER);
layoutComposite.setLayoutData(new GridData(GridData.FILL_BOTH));
createLayout();
}
/**
* Creates the layout group. This is the group on the left half of each
* example tab.
*/
void createLayoutGroup() {
layoutGroup = new Group(sash, SWT.NONE);
layoutGroup.setText(LayoutExample.getResourceString("Layout"));
layoutGroup.setLayout(new GridLayout());
createLayoutComposite();
}
/**
* Creates the tab folder page.
*
* @param tabFolder
* org.eclipse.swt.widgets.TabFolder
* @return the new page for the tab folder
*/
Composite createTabFolderPage(TabFolder tabFolder) {
/* Create a two column page with a SashForm */
tabFolderPage = new Composite(tabFolder, SWT.NULL);
tabFolderPage.setLayout(new FillLayout());
sash = new SashForm(tabFolderPage, SWT.HORIZONTAL);
/* Create the "layout" and "control" columns */
createLayoutGroup();
createControlGroup();
return tabFolderPage;
}
/**
* Creates the TableEditor with a Text in the given column of the table.
*/
void createTextEditor(Text text, TableEditor textEditor, int column) {
text.setFont(table.getFont());
text.selectAll();
textEditor.horizontalAlignment = SWT.LEFT;
textEditor.grabHorizontal = true;
textEditor.setEditor(text, newItem, column);
text.addTraverseListener(new TraverseListener() {
public void keyTraversed(TraverseEvent e) {
if (e.detail == SWT.TRAVERSE_TAB_NEXT) {
resetEditors(true);
}
if (e.detail == SWT.TRAVERSE_ESCAPE) {
disposeEditors();
}
}
});
}
/**
* Disposes the editors without placing their contents into the table.
* Subclasses override this method.
*/
void disposeEditors() {
}
/**
* Generates the code needed to produce the example layout.
*/
StringBuffer generateCode() {
/* Make sure all information being entered is stored in the table */
resetEditors();
/* Get names for controls in the layout */
names = new String[children.length];
for (int i = 0; i < children.length; i++) {
Control control = children[i];
String controlClass = control.getClass().toString();
String controlType = controlClass.substring(controlClass
.lastIndexOf('.') + 1);
names[i] = controlType.toLowerCase() + i;
}
/* Create StringBuffer containing the code */
StringBuffer code = new StringBuffer();
code.append("import org.eclipse.swt.*;\n");
code.append("import org.eclipse.swt.custom.*;\n");
code.append("import org.eclipse.swt.graphics.*;\n");
code.append("import org.eclipse.swt.layout.*;\n");
code.append("import org.eclipse.swt.widgets.*;\n\n");
code.append("public class MyLayout {\n");
code.append("\tpublic static void main (String [] args) {\n");
code.append("\t\tDisplay display = new Display ();\n");
code.append("\t\tShell shell = new Shell (display);\n");
/* Get layout specific code */
code.append(generateLayoutCode());
code.append("\n\t\tshell.pack ();\n\t\tshell.open ();\n\n");
code.append("\t\twhile (!shell.isDisposed ()) {\n");
code.append("\t\t\tif (!display.readAndDispatch ())\n");
code
.append("\t\t\t\tdisplay.sleep ();\n\t\t}\n\t\tdisplay.dispose ();\n\t}\n}");
return code;
}
/**
* Generates layout specific code for the example layout. Subclasses
* override this method.
*/
StringBuffer generateLayoutCode() {
return new StringBuffer();
}
/**
* Returns the StringBuffer for the code which will create a child control.
*/
StringBuffer getChildCode(Control control, int i) {
StringBuffer code = new StringBuffer();
/* Find the type of control */
String controlClass = control.getClass().toString();
String controlType = controlClass.substring(controlClass
.lastIndexOf('.') + 1);
/* Find the style of the control */
String styleString;
if (controlType.equals("Button")) {
styleString = "SWT.PUSH";
} else if (controlType.equals("Text")) {
styleString = "SWT.BORDER";
} else if (controlType.equals("StyledText")) {
styleString = "SWT.MULTI | SWT.BORDER | SWT.V_SCROLL | SWT.H_SCROLL";
} else if (controlType.equals("Canvas")
|| controlType.equals("Composite")
|| controlType.equals("Table")
|| controlType.equals("StyledText")
|| controlType.equals("ToolBar") || controlType.equals("Tree")
|| controlType.equals("List")) {
styleString = "SWT.BORDER";
} else
styleString = "SWT.NONE";
/* Write out the control being declared */
code.append("\n\t\t" + controlType + " " + names[i] + " = new "
+ controlType + " (shell, " + styleString + ");\n");
/* Add items to those controls that need items */
if (controlType.equals("Combo") || controlType.equals("List")) {
code
.append("\t\t"
+ names[i]
+ ".setItems (new String [] {\"Item 1\", \"Item 2\", \"Item 2\"});\n");
} else if (controlType.equals("Table")) {
code.append("\t\t" + names[i] + ".setLinesVisible (true);\n");
for (int j = 1; j < 3; j++) {
code.append("\t\tTableItem tableItem" + j
+ " = new TableItem (" + names[i] + ", SWT.NONE);\n");
code.append("\t\ttableItem" + j + ".setText (\"Item" + j
+ "\");\n");
}
} else if (controlType.equals("Tree")) {
for (int j = 1; j < 3; j++) {
code.append("\t\tTreeItem treeItem" + j + " = new TreeItem ("
+ names[i] + ", SWT.NONE);\n");
code.append("\t\ttreeItem" + j + ".setText (\"Item" + j
+
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