examples/org.eclipse.swt.examples/src/org/eclipse/swt/examples/layoutexample/GridLayoutTab.java - platform/eclipse.platform.swt - Git at Google

 /*******************************************************************************
  * Copyright (c) 2000, 2005 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
  *******************************************************************************/
 package org.eclipse.swt.examples.layoutexample;


 import org.eclipse.swt.*;
 import org.eclipse.swt.custom.*;
 import org.eclipse.swt.events.*;
 import org.eclipse.swt.layout.*;
 import org.eclipse.swt.widgets.*;
 import org.eclipse.swt.graphics.*;

 class GridLayoutTab extends Tab {
 	/* Controls for setting layout parameters */
 	Text numColumns;
 	Button makeColumnsEqualWidth;
 	Combo marginHeight, marginWidth, horizontalSpacing, verticalSpacing;
 	/* The example layout instance */
 	GridLayout gridLayout;
 	/* TableEditors and related controls*/
 	TableEditor comboEditor, widthEditor, heightEditor;
 	TableEditor vAlignEditor, hAlignEditor, hIndentEditor;
 	TableEditor hSpanEditor, vSpanEditor, hGrabEditor, vGrabEditor;
 	CCombo combo, vAlign, hAlign, hGrab, vGrab;
 	Text widthText, heightText, hIndent, hSpan, vSpan;

 	/* Constants */
 	final int COMBO_COL = 1;
 	final int WIDTH_COL = 2;
 	final int HEIGHT_COL = 3;
 	final int HALIGN_COL = 4;
 	final int VALIGN_COL = 5;
 	final int HINDENT_COL = 6;
 	final int HSPAN_COL = 7;
 	final int VSPAN_COL = 8;
 	final int HGRAB_COL = 9;
 	final int VGRAB_COL = 10;

 	final int TOTAL_COLS = 11;

 	/**
 	 * Creates the Tab within a given instance of LayoutExample.
 	 */
 	GridLayoutTab(LayoutExample instance) {
 		super(instance);
 	}

 	/**
 	 * Creates the widgets in the "child" group.
 	 */
 	void createChildWidgets () {
 		/* Create the TraverseListener */
 		final TraverseListener traverseListener = new TraverseListener () {
 			public void keyTraversed (TraverseEvent e) {
 				if (e.detail == SWT.TRAVERSE_RETURN || e.detail == SWT.TRAVERSE_TAB_NEXT)
 					resetEditors ();
 				if (e.detail == SWT.TRAVERSE_ESCAPE)
 					disposeEditors ();
 			}
 		};

 		/* Add common controls */
 		super.createChildWidgets ();

 		/* Add TableEditors */
 		comboEditor = new TableEditor (table);
 		widthEditor = new TableEditor (table);
 		heightEditor = new TableEditor (table);
 		vAlignEditor = new TableEditor (table);
 		hAlignEditor = new TableEditor (table);
 		hIndentEditor = new TableEditor (table);
 		hSpanEditor = new TableEditor (table);
 		vSpanEditor = new TableEditor (table);
 		hGrabEditor = new TableEditor (table);
 		vGrabEditor = new TableEditor (table);
 		table.addMouseListener (new MouseAdapter () {
 			public void mouseDown(MouseEvent e) {
 				resetEditors();
 				index = table.getSelectionIndex ();
 				Point pt = new Point (e.x, e.y);
                 newItem = table.getItem (pt);
                 if (newItem == null) return;
                 TableItem oldItem = comboEditor.getItem ();
                 if (newItem == oldItem || newItem != lastSelected) {
 					lastSelected = newItem;
 					return;
 				}
 				table.showSelection ();

 				combo = new CCombo (table, SWT.READ_ONLY);
 				createComboEditor (combo, comboEditor);

 				widthText = new Text (table, SWT.SINGLE);
 				widthText.setText (((String [])data.elementAt (index)) [WIDTH_COL]);
 				createTextEditor (widthText, widthEditor, WIDTH_COL);

 				heightText = new Text (table, SWT.SINGLE);
 				heightText.setText (((String [])data.elementAt (index)) [HEIGHT_COL]);
 				createTextEditor (heightText, heightEditor, HEIGHT_COL);
 				String [] alignValues = new String [] {"BEGINNING","CENTER","END","FILL"};
 				hAlign = new CCombo (table, SWT.NONE);
 				hAlign.setItems (alignValues);
 				hAlign.setText (newItem.getText (HALIGN_COL));
 				hAlignEditor.horizontalAlignment = SWT.LEFT;
 				hAlignEditor.grabHorizontal = true;
 				hAlignEditor.minimumWidth = 50;
 				hAlignEditor.setEditor (hAlign, newItem, HALIGN_COL);
 				hAlign.addTraverseListener (traverseListener);

 				vAlign = new CCombo (table, SWT.NONE);
 				vAlign.setItems (alignValues);
 				vAlign.setText (newItem.getText (VALIGN_COL));
 				vAlignEditor.horizontalAlignment = SWT.LEFT;
 				vAlignEditor.grabHorizontal = true;
 				vAlignEditor.minimumWidth = 50;
 				vAlignEditor.setEditor (vAlign, newItem, VALIGN_COL);
 				vAlign.addTraverseListener (traverseListener);

 				hIndent = new Text (table, SWT.SINGLE);
 				hIndent.setText (((String [])data.elementAt (index)) [HINDENT_COL]);
 				createTextEditor (hIndent, hIndentEditor, HINDENT_COL);

 				hSpan = new Text (table, SWT.SINGLE);
 				hSpan.setText (((String [])data.elementAt (index)) [HSPAN_COL]);
 				createTextEditor (hSpan, hSpanEditor, HSPAN_COL);

 				vSpan = new Text (table, SWT.SINGLE);
 				vSpan.setText (((String [])data.elementAt (index)) [VSPAN_COL]);
 				createTextEditor (vSpan, vSpanEditor, VSPAN_COL);

 				String [] boolValues = new String [] {"false","true"};
 				hGrab = new CCombo (table, SWT.NONE);
 				hGrab.setItems (boolValues);
 				hGrab.setText (newItem.getText (HGRAB_COL));
 				hGrabEditor.horizontalAlignment = SWT.LEFT;
 				hGrabEditor.grabHorizontal = true;
 				hGrabEditor.minimumWidth = 50;
 				hGrabEditor.setEditor (hGrab, newItem, HGRAB_COL);
 				hGrab.addTraverseListener (traverseListener);

 				vGrab = new CCombo (table, SWT.NONE);
 				vGrab.setItems (boolValues);
 				vGrab.setText (newItem.getText (VGRAB_COL));
 				vGrabEditor.horizontalAlignment = SWT.LEFT;
 				vGrabEditor.grabHorizontal = true;
 				vGrabEditor.minimumWidth = 50;
 				vGrabEditor.setEditor (vGrab, newItem, VGRAB_COL);
 				vGrab.addTraverseListener (traverseListener);

                 for (int i=0; i<table.getColumnCount (); i++) {
                 	Rectangle rect = newItem.getBounds (i);
                     if (rect.contains (pt)) {
                     	switch (i) {
 							case COMBO_COL :
 								combo.setFocus ();
 								break;
 							case WIDTH_COL :
 								widthText.setFocus ();
 								break;
 							case HEIGHT_COL :
 								heightText.setFocus ();
 								break;
 							case HALIGN_COL :
 								hAlign.setFocus ();
 								break;
 							case VALIGN_COL :
 								vAlign.setFocus ();
 								break;
 							case HINDENT_COL :
 								hIndent.setFocus ();
 								break;
 							case HSPAN_COL :
 								hSpan.setFocus ();
 								break;
 							case VSPAN_COL :
 								vSpan.setFocus ();
 								break;
 							case HGRAB_COL :
 								hGrab.setFocus ();
 								break;
 							case VGRAB_COL :
 								vGrab.setFocus ();
 								break;
 							default :
 								resetEditors ();
 								break;
 						}
                     }
                 }
 			}
 		});

 		/* Add listener to add an element to the table */
 		add.addSelectionListener(new SelectionAdapter () {
 			public void widgetSelected(SelectionEvent e) {
 				TableItem item = new TableItem (table, 0);
 				String [] insert = new String [] {
 					String.valueOf (table.indexOf (item)), "Button",
 					"-1","-1","BEGINNING","CENTER",
 					"0","1","1","false","false"};
 				item.setText (insert);
 				data.addElement (insert);
 				resetEditors ();
 			}
 		});
 	}

 	/**
 	 * Creates the control widgets.
 	 */
 	void createControlWidgets () {
 		/* Rearrange the layout of the control group */
 		size.setLayoutData (new GridData ());

 		/* Controls the margins and spacing of the GridLayout */
 		String [] marginValues = new String [] {"0","3","5","10"};
 		Group marginGroup = new Group (controlGroup, SWT.NONE);
 		marginGroup.setText (LayoutExample.getResourceString ("Margins_Spacing"));
 		GridData data = new GridData (GridData.FILL_HORIZONTAL);
 		data.verticalSpan = 2;
 		marginGroup.setLayoutData (data);
 		GridLayout layout = new GridLayout ();
 		layout.numColumns = 2;
 		marginGroup.setLayout (layout);
 		new Label (marginGroup, SWT.NONE).setText ("marginHeight");
 		marginHeight = new Combo (marginGroup, SWT.NONE);
 		marginHeight.setItems (marginValues);
 		marginHeight.select (2);
 		data = new GridData (GridData.FILL_HORIZONTAL);
 		data.widthHint = 60;
 		marginHeight.setLayoutData (data);
 		marginHeight.addSelectionListener (selectionListener);
 		marginHeight.addTraverseListener (traverseListener);
 		new Label (marginGroup, SWT.NONE).setText ("marginWidth");
 		marginWidth = new Combo (marginGroup, SWT.NONE);
 		marginWidth.setItems (marginValues);
 		marginWidth.select (2);
 		data = new GridData (GridData.FILL_HORIZONTAL);
 		data.widthHint = 60;
 		marginWidth.setLayoutData (data);
 		marginWidth.addSelectionListener (selectionListener);
 		marginWidth.addTraverseListener (traverseListener);
 		new Label (marginGroup, SWT.NONE).setText ("horizontalSpacing");
 		horizontalSpacing = new Combo (marginGroup, SWT.NONE);
 		horizontalSpacing.setItems (marginValues);
 		horizontalSpacing.select (2);
 		data = new GridData (GridData.FILL_HORIZONTAL);
 		data.widthHint = 60;
 		horizontalSpacing.setLayoutData (data);
 		horizontalSpacing.addSelectionListener (selectionListener);
 		horizontalSpacing.addTraverseListener (traverseListener);
 		new Label (marginGroup, SWT.NONE).setText ("verticalSpacing");
 		verticalSpacing = new Combo (marginGroup, SWT.NONE);
 		verticalSpacing.setItems (marginValues);
 		verticalSpacing.select (2);
 		data = new GridData (GridData.FILL_HORIZONTAL);
 		data.widthHint = 60;
 		verticalSpacing.setLayoutData (data);
 		verticalSpacing.addSelectionListener (selectionListener);
 		verticalSpacing.addTraverseListener (traverseListener);

         /* Controls the columns in the GridLayout */
 		Group columnGroup = new Group (controlGroup, SWT.NONE);
 		columnGroup.setText (LayoutExample.getResourceString ("Columns"));
 		layout = new GridLayout ();
 		layout.numColumns = 2;
 		columnGroup.setLayout (layout);
 		data = new GridData (GridData.VERTICAL_ALIGN_FILL);
 		columnGroup.setLayoutData (data);
 		numColumns = new Text (columnGroup, SWT.BORDER);
 		numColumns.setText ("1");
 		numColumns.addSelectionListener (selectionListener);
 		numColumns.addTraverseListener (traverseListener);
        	data = new GridData (GridData.FILL_HORIZONTAL);
        	data.widthHint = 15;
        	numColumns.setLayoutData (data);
        	new Label (columnGroup, SWT.NONE).setText ("numColumns");
 		makeColumnsEqualWidth = new Button (columnGroup, SWT.CHECK);
 		makeColumnsEqualWidth.setText ("makeColumnsEqualWidth");
 		makeColumnsEqualWidth.addSelectionListener (selectionListener);
 		data = new GridData (GridData.FILL_HORIZONTAL);
 		data.horizontalSpan = 2;
 		data.horizontalIndent = 14;
 		makeColumnsEqualWidth.setLayoutData (data);

 		/* Add common controls */
 		super.createControlWidgets ();
 		controlGroup.pack();
 	}

 	/**
 	 * Creates the example layout.
 	 */
 	void createLayout () {
 		gridLayout = new GridLayout ();
 		layoutComposite.setLayout (gridLayout);
 	}

 	/**
 	 * Disposes the editors without placing their contents
 	 * into the table.
 	 */
 	void disposeEditors () {
 		comboEditor.setEditor (null, null, -1);
 		combo.dispose ();
 		widthText.dispose ();
 		heightText.dispose ();
 		hAlign.dispose ();
 		vAlign.dispose ();
 		hIndent.dispose ();
 		hSpan.dispose ();
 		vSpan.dispose ();
 		hGrab.dispose ();
 		vGrab.dispose ();
 	}

 	/**
 	 * Generates code for the example layout.
 	 */
 	StringBuffer generateLayoutCode () {
 		StringBuffer code = new StringBuffer ();
 		code.append ("\t\tGridLayout gridLayout = new GridLayout ();\n");
 		if (gridLayout.numColumns != 1) {
 			code.append ("\t\tgridLayout.numColumns = " + gridLayout.numColumns + ";\n");
 		}
 		if (gridLayout.makeColumnsEqualWidth) {
 			code.append ("\t\tgridLayout.makeColumnsEqualWidth = true;\n");
 		}
 		if (gridLayout.marginHeight != 5) {
 			code.append ("\t\tgridLayout.marginHeight = " + gridLayout.marginHeight + ";\n");
 		}
 		if (gridLayout.marginWidth != 5) {
 			code.append ("\t\tgridLayout.marginWidth = " + gridLayout.marginWidth + ";\n");
 		}
 		if (gridLayout.horizontalSpacing != 5) {
 			code.append ("\t\tgridLayout.horizontalSpacing = " + gridLayout.horizontalSpacing + ";\n");
 		}
 		if (gridLayout.verticalSpacing != 5) {
 			code.append ("\t\tgridLayout.verticalSpacing = " + gridLayout.verticalSpacing + ";\n");
 		}
 		code.append ("\t\tshell.setLayout (gridLayout);\n");

 		boolean first = true;
 		for (int i = 0; i < children.length; i++) {
 			Control control = children [i];
 			code.append (getChildCode (control, i));
 			GridData data = (GridData) control.getLayoutData ();
 			if (data != null) {
 				code.append ("\t\t");
 				if (first) {
 					code.append ("GridData ");
 					first = false;
 				}
 				code.append ("data = new GridData ();\n");
 				if (data.widthHint != SWT.DEFAULT) {
 					code.append ("\t\tdata.widthHint = " + data.widthHint + ";\n");
 				}
 				if (data.heightHint != SWT.DEFAULT) {
 					code.append ("\t\tdata.heightHint = " + data.heightHint + ";\n");
 				}
 				if (data.horizontalAlignment != GridData.BEGINNING) {
 					String alignment;
 					int hAlignment = data.horizontalAlignment;
 					if (hAlignment == GridData.CENTER) alignment = "GridData.CENTER";
 					else if (hAlignment == GridData.END) alignment = "GridData.END";
 					else alignment = "GridData.FILL";
 					code.append ("\t\tdata.horizontalAlignment = " + alignment + ";\n");
 				}
 				if (data.verticalAlignment != GridData.CENTER) {
 					String alignment;
 					int vAlignment = data.verticalAlignment;
 					if (vAlignment == GridData.BEGINNING) alignment = "GridData.BEGINNING";
 					else if (vAlignment == GridData.END) alignment = "GridData.END";
 					else alignment = "GridData.FILL";
 					code.append ("\t\tdata.verticalAlignment = " + alignment + ";\n");
 				}
 				if (data.horizontalIndent != 0) {
 					code.append ("\t\tdata.horizontalIndent = " + data.horizontalIndent + ";\n");
 				}
 				if (data.horizontalSpan != 1) {
 					code.append ("\t\tdata.horizontalSpan = " + data.horizontalSpan + ";\n");
 				}
 				if (data.verticalSpan != 1) {
 					code.append ("\t\tdata.verticalSpan = " + data.verticalSpan + ";\n");
 				}
 				if (data.grabExcessHorizontalSpace) {
 					code.append ("\t\tdata.grabExcessHorizontalSpace = true;\n");
 				}
 				if (data.grabExcessVerticalSpace) {
 					code.append ("\t\tdata.grabExcessVerticalSpace = true;\n");
 				}
 				if (code.substring (code.length () - 33).equals ("GridData data = new GridData ();\n")) {
 					code.delete (code.length () - 33, code.length ());
 					first = true;
 				} else if (code.substring (code.length () - 24).equals ("data = new GridData ();\n")) {
 					code.delete (code.length () - 24, code.length ());
 				} else {
 					code.append ("\t\t" + names [i] + ".setLayoutData (data);\n");
 				}
 			}
 		}
 		return code;
 	}

 	/**
 	 * Returns the layout data field names.
 	 */
 	String [] getLayoutDataFieldNames() {
 		return new String [] {
 			"",
 			"Control",
 			"width",
 			"height",
 			"horizontalAlignment",
 			"verticalAlignment",
 			"horizontalIndent",
 			"horizontalSpan",
 			"verticalSpan",
 			"grabExcessHorizontalSpace",
 			"grabExcessVerticalSpace"
 		};
 	}

 	/**
 	 * Gets the text for the tab folder item.
 	 */
 	String getTabText () {
 		return "GridLayout";
 	}

 	/**
 	 * Takes information from TableEditors and stores it.
 	 */
 	void resetEditors () {
 		resetEditors (false);
 	}

 	void resetEditors (boolean tab) {
 		TableItem oldItem = comboEditor.getItem ();
 		if (oldItem != null) {
 			int row = table.indexOf (oldItem);
 			try {
 				new Integer (widthText.getText ()).intValue ();
 			} catch (NumberFormatException e) {
 				widthText.setText (oldItem.getText (WIDTH_COL));
 			}
 			try {
 				new Integer (heightText.getText ()).intValue ();
 			} catch (NumberFormatException e) {
 				heightText.setText (oldItem.getText (HEIGHT_COL));
 			}
 			try {
 				new Integer (hIndent.getText ()).intValue ();
 			} catch (NumberFormatException e) {
 				hIndent.setText (oldItem.getText (HINDENT_COL));
 			}
 			try {
 				new Integer (hSpan.getText ()).intValue ();
 			} catch (NumberFormatException e) {
 				hSpan.setText (oldItem.getText (HSPAN_COL));
 			}
 			try {
 				new Integer (vSpan.getText ()).intValue ();
 			} catch (NumberFormatException e) {
 				vSpan.setText (oldItem.getText (VSPAN_COL));
 			}
 			String [] insert = new String [] {
 				String.valueOf (row), combo.getText (), widthText.getText (), heightText.getText (),
 				hAlign.getText (), vAlign.getText (), hIndent.getText (),
 				hSpan.getText (), vSpan.getText (), hGrab.getText (), vGrab.getText ()
 			};
 			data.setElementAt (insert, row);
 			for (int i = 0; i < TOTAL_COLS; i++) {
 				oldItem.setText (i, ((String [])data.elementAt (row)) [i]);
 			}
 			if (!tab) disposeEditors ();
 		}
 		setLayoutState ();
 		refreshLayoutComposite ();
 		setLayoutData ();
 		layoutComposite.layout (true);
 		layoutGroup.layout (true);
 	}

 	/**
 	 * Sets the layout data for the children of the layout.
 	 */
 	void setLayoutData () {
 		Control [] children = layoutComposite.getChildren ();
 		TableItem [] items = table.getItems ();
 		GridData data;
 		int hIndent, hSpan, vSpan;
 		String vAlign, hAlign, vGrab, hGrab;
 		for (int i = 0; i < children.length; i++) {
 			data = new GridData ();
 			/* Set widthHint and heightHint */
 			data.widthHint = new Integer (items [i].getText (WIDTH_COL)).intValue ();
 			data.heightHint = new Integer (items [i].getText (HEIGHT_COL)).intValue ();
 			/* Set vertical alignment and horizontal alignment */
 			hAlign = items [i].getText (HALIGN_COL);
 			if (hAlign.equals ("CENTER")) {
 				data.horizontalAlignment = GridData.CENTER;
 			} else if (hAlign.equals ("END")) {
 				data.horizontalAlignment = GridData.END;
 			} else if (hAlign.equals ("FILL")) {
 				data.horizontalAlignment = GridData.FILL;
 			} else {
 				data.horizontalAlignment = GridData.BEGINNING;
 			}
 			vAlign = items [i].getText (VALIGN_COL);
 			if (vAlign.equals ("BEGINNING")) {
 				data.verticalAlignment = GridData.BEGINNING;
 			} else if (vAlign.equals ("END")) {
 				data.verticalAlignment = GridData.END;
 			} else if (vAlign.equals ("FILL")) {
 				data.verticalAlignment = GridData.FILL;
 			} else {
 				data.verticalAlignment = GridData.CENTER;
 			}
 			/* Set indents and spans */
 			hIndent = new Integer (items [i].getText (HINDENT_COL)).intValue ();
 			data.horizontalIndent = hIndent;
 			hSpan = new Integer (items [i].getText (HSPAN_COL)).intValue ();
 			data.horizontalSpan = hSpan;
 			vSpan = new Integer (items [i].getText (VSPAN_COL)).intValue ();
 			data.verticalSpan = vSpan;
 			/* Set grabbers */
 			hGrab = items [i].getText (HGRAB_COL);
 			if (hGrab.equals ("true")) {
 				data.grabExcessHorizontalSpace = true;
 			} else {
 				data.grabExcessHorizontalSpace = false;
 			}
 			vGrab = items [i].getText (VGRAB_COL);
 			if (vGrab.equals ("true")) {
 				data.grabExcessVerticalSpace = true;
 			} else {
 				data.grabExcessVerticalSpace = false;
 			}
 			children [i].setLayoutData (data);
 		}
 	}

 	/**
 	 * Sets the state of the layout.
 	 */
 	void setLayoutState () {
 		/* Set the columns for the layout */
 		try {
 			gridLayout.numColumns = new Integer (numColumns.getText ()).intValue ();
 		} catch (NumberFormatException e) {
 			gridLayout.numColumns = 1;
 		}
 		gridLayout.makeColumnsEqualWidth = makeColumnsEqualWidth.getSelection ();

 		/* Set the margins and spacing */
 		try {
 			gridLayout.marginHeight = new Integer (marginHeight.getText ()).intValue ();
 		} catch (NumberFormatException e) {
 			gridLayout.marginHeight = 5;
 			marginHeight.select (2);
 		}
 		try {
 			gridLayout.marginWidth = new Integer (marginWidth.getText ()).intValue ();
 		} catch (NumberFormatException e) {
 			gridLayout.marginWidth = 5;
 			marginWidth.select (2);
 		}
 		try {
 			gridLayout.horizontalSpacing = new Integer (horizontalSpacing.getText ()).intValue ();
 		} catch (NumberFormatException e) {
 			gridLayout.horizontalSpacing = 5;
 			horizontalSpacing.select (2);
 		}
 		try {
 			gridLayout.verticalSpacing = new Integer (verticalSpacing.getText ()).intValue ();
 		} catch (NumberFormatException e) {
 			gridLayout.verticalSpacing = 5;
 			verticalSpacing.select (2);
 		}
 	}
 }
	/*******************************************************************************
	* Copyright (c) 2000, 2005 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
	*******************************************************************************/
	package org.eclipse.swt.examples.layoutexample;


	import org.eclipse.swt.*;
	import org.eclipse.swt.custom.*;
	import org.eclipse.swt.events.*;
	import org.eclipse.swt.layout.*;
	import org.eclipse.swt.widgets.*;
	import org.eclipse.swt.graphics.*;

	class GridLayoutTab extends Tab {
	/* Controls for setting layout parameters */
	Text numColumns;
	Button makeColumnsEqualWidth;
	Combo marginHeight, marginWidth, horizontalSpacing, verticalSpacing;
	/* The example layout instance */
	GridLayout gridLayout;
	/* TableEditors and related controls*/
	TableEditor comboEditor, widthEditor, heightEditor;
	TableEditor vAlignEditor, hAlignEditor, hIndentEditor;
	TableEditor hSpanEditor, vSpanEditor, hGrabEditor, vGrabEditor;
	CCombo combo, vAlign, hAlign, hGrab, vGrab;
	Text widthText, heightText, hIndent, hSpan, vSpan;

	/* Constants */
	final int COMBO_COL = 1;
	final int WIDTH_COL = 2;
	final int HEIGHT_COL = 3;
	final int HALIGN_COL = 4;
	final int VALIGN_COL = 5;
	final int HINDENT_COL = 6;
	final int HSPAN_COL = 7;
	final int VSPAN_COL = 8;
	final int HGRAB_COL = 9;
	final int VGRAB_COL = 10;

	final int TOTAL_COLS = 11;

	/**
	* Creates the Tab within a given instance of LayoutExample.
	*/
	GridLayoutTab(LayoutExample instance) {
	super(instance);
	}

	/**
	* Creates the widgets in the "child" group.
	*/
	void createChildWidgets () {
	/* Create the TraverseListener */
	final TraverseListener traverseListener = new TraverseListener () {
	public void keyTraversed (TraverseEvent e) {
	if (e.detail == SWT.TRAVERSE_RETURN \|\| e.detail == SWT.TRAVERSE_TAB_NEXT)
	resetEditors ();
	if (e.detail == SWT.TRAVERSE_ESCAPE)
	disposeEditors ();
	}
	};

	/* Add common controls */
	super.createChildWidgets ();

	/* Add TableEditors */
	comboEditor = new TableEditor (table);
	widthEditor = new TableEditor (table);
	heightEditor = new TableEditor (table);
	vAlignEditor = new TableEditor (table);
	hAlignEditor = new TableEditor (table);
	hIndentEditor = new TableEditor (table);
	hSpanEditor = new TableEditor (table);
	vSpanEditor = new TableEditor (table);
	hGrabEditor = new TableEditor (table);
	vGrabEditor = new TableEditor (table);
	table.addMouseListener (new MouseAdapter () {
	public void mouseDown(MouseEvent e) {
	resetEditors();
	index = table.getSelectionIndex ();
	Point pt = new Point (e.x, e.y);
	newItem = table.getItem (pt);
	if (newItem == null) return;
	TableItem oldItem = comboEditor.getItem ();
	if (newItem == oldItem \|\| newItem != lastSelected) {
	lastSelected = newItem;
	return;
	}
	table.showSelection ();

	combo = new CCombo (table, SWT.READ_ONLY);
	createComboEditor (combo, comboEditor);

	widthText = new Text (table, SWT.SINGLE);
	widthText.setText (((String [])data.elementAt (index)) [WIDTH_COL]);
	createTextEditor (widthText, widthEditor, WIDTH_COL);

	heightText = new Text (table, SWT.SINGLE);
	heightText.setText (((String [])data.elementAt (index)) [HEIGHT_COL]);
	createTextEditor (heightText, heightEditor, HEIGHT_COL);
	String [] alignValues = new String [] {"BEGINNING","CENTER","END","FILL"};
	hAlign = new CCombo (table, SWT.NONE);
	hAlign.setItems (alignValues);
	hAlign.setText (newItem.getText (HALIGN_COL));
	hAlignEditor.horizontalAlignment = SWT.LEFT;
	hAlignEditor.grabHorizontal = true;
	hAlignEditor.minimumWidth = 50;
	hAlignEditor.setEditor (hAlign, newItem, HALIGN_COL);
	hAlign.addTraverseListener (traverseListener);

	vAlign = new CCombo (table, SWT.NONE);
	vAlign.setItems (alignValues);
	vAlign.setText (newItem.getText (VALIGN_COL));
	vAlignEditor.horizontalAlignment = SWT.LEFT;
	vAlignEditor.grabHorizontal = true;
	vAlignEditor.minimumWidth = 50;
	vAlignEditor.setEditor (vAlign, newItem, VALIGN_COL);
	vAlign.addTraverseListener (traverseListener);

	hIndent = new Text (table, SWT.SINGLE);
	hIndent.setText (((String [])data.elementAt (index)) [HINDENT_COL]);
	createTextEditor (hIndent, hIndentEditor, HINDENT_COL);

	hSpan = new Text (table, SWT.SINGLE);
	hSpan.setText (((String [])data.elementAt (index)) [HSPAN_COL]);
	createTextEditor (hSpan, hSpanEditor, HSPAN_COL);

	vSpan = new Text (table, SWT.SINGLE);
	vSpan.setText (((String [])data.elementAt (index)) [VSPAN_COL]);
	createTextEditor (vSpan, vSpanEditor, VSPAN_COL);

	String [] boolValues = new String [] {"false","true"};
	hGrab = new CCombo (table, SWT.NONE);
	hGrab.setItems (boolValues);
	hGrab.setText (newItem.getText (HGRAB_COL));
	hGrabEditor.horizontalAlignment = SWT.LEFT;
	hGrabEditor.grabHorizontal = true;
	hGrabEditor.minimumWidth = 50;
	hGrabEditor.setEditor (hGrab, newItem, HGRAB_COL);
	hGrab.addTraverseListener (traverseListener);

	vGrab = new CCombo (table, SWT.NONE);
	vGrab.setItems (boolValues);
	vGrab.setText (newItem.getText (VGRAB_COL));
	vGrabEditor.horizontalAlignment = SWT.LEFT;
	vGrabEditor.grabHorizontal = true;
	vGrabEditor.minimumWidth = 50;
	vGrabEditor.setEditor (vGrab, newItem, VGRAB_COL);
	vGrab.addTraverseListener (traverseListener);

	for (int i=0; i<table.getColumnCount (); i++) {
	Rectangle rect = newItem.getBounds (i);
	if (rect.contains (pt)) {
	switch (i) {
	case COMBO_COL :
	combo.setFocus ();
	break;
	case WIDTH_COL :
	widthText.setFocus ();
	break;
	case HEIGHT_COL :
	heightText.setFocus ();
	break;
	case HALIGN_COL :
	hAlign.setFocus ();
	break;
	case VALIGN_COL :
	vAlign.setFocus ();
	break;
	case HINDENT_COL :
	hIndent.setFocus ();
	break;
	case HSPAN_COL :
	hSpan.setFocus ();
	break;
	case VSPAN_COL :
	vSpan.setFocus ();
	break;
	case HGRAB_COL :
	hGrab.setFocus ();
	break;
	case VGRAB_COL :
	vGrab.setFocus ();
	break;
	default :
	resetEditors ();
	break;
	}
	}
	}
	}
	});

	/* Add listener to add an element to the table */
	add.addSelectionListener(new SelectionAdapter () {
	public void widgetSelected(SelectionEvent e) {
	TableItem item = new TableItem (table, 0);
	String [] insert = new String [] {
	String.valueOf (table.indexOf (item)), "Button",
	"-1","-1","BEGINNING","CENTER",
	"0","1","1","false","false"};
	item.setText (insert);
	data.addElement (insert);
	resetEditors ();
	}
	});
	}

	/**
	* Creates the control widgets.
	*/
	void createControlWidgets () {
	/* Rearrange the layout of the control group */
	size.setLayoutData (new GridData ());

	/* Controls the margins and spacing of the GridLayout */
	String [] marginValues = new String [] {"0","3","5","10"};
	Group marginGroup = new Group (controlGroup, SWT.NONE);
	marginGroup.setText (LayoutExample.getResourceString ("Margins_Spacing"));
	GridData data = new GridData (GridData.FILL_HORIZONTAL);
	data.verticalSpan = 2;
	marginGroup.setLayoutData (data);
	GridLayout layout = new GridLayout ();
	layout.numColumns = 2;
	marginGroup.setLayout (layout);
	new Label (marginGroup, SWT.NONE).setText ("marginHeight");
	marginHeight = new Combo (marginGroup, SWT.NONE);
	marginHeight.setItems (marginValues);
	marginHeight.select (2);
	data = new GridData (GridData.FILL_HORIZONTAL);
	data.widthHint = 60;
	marginHeight.setLayoutData (data);
	marginHeight.addSelectionListener (selectionListener);
	marginHeight.addTraverseListener (traverseListener);
	new Label (marginGroup, SWT.NONE).setText ("marginWidth");
	marginWidth = new Combo (marginGroup, SWT.NONE);
	marginWidth.setItems (marginValues);
	marginWidth.select (2);
	data = new GridData (GridData.FILL_HORIZONTAL);
	data.widthHint = 60;
	marginWidth.setLayoutData (data);
	marginWidth.addSelectionListener (selectionListener);
	marginWidth.addTraverseListener (traverseListener);
	new Label (marginGroup, SWT.NONE).setText ("horizontalSpacing");
	horizontalSpacing = new Combo (marginGroup, SWT.NONE);
	horizontalSpacing.setItems (marginValues);
	horizontalSpacing.select (2);
	data = new GridData (GridData.FILL_HORIZONTAL);
	data.widthHint = 60;
	horizontalSpacing.setLayoutData (data);
	horizontalSpacing.addSelectionListener (selectionListener);
	horizontalSpacing.addTraverseListener (traverseListener);
	new Label (marginGroup, SWT.NONE).setText ("verticalSpacing");
	verticalSpacing = new Combo (marginGroup, SWT.NONE);
	verticalSpacing.setItems (marginValues);
	verticalSpacing.select (2);
	data = new GridData (GridData.FILL_HORIZONTAL);
	data.widthHint = 60;
	verticalSpacing.setLayoutData (data);
	verticalSpacing.addSelectionListener (selectionListener);
	verticalSpacing.addTraverseListener (traverseListener);

	/* Controls the columns in the GridLayout */
	Group columnGroup = new Group (controlGroup, SWT.NONE);
	columnGroup.setText (LayoutExample.getResourceString ("Columns"));
	layout = new GridLayout ();
	layout.numColumns = 2;
	columnGroup.setLayout (layout);
	data = new GridData (GridData.VERTICAL_ALIGN_FILL);
	columnGroup.setLayoutData (data);
	numColumns = new Text (columnGroup, SWT.BORDER);
	numColumns.setText ("1");
	numColumns.addSelectionListener (selectionListener);
	numColumns.addTraverseListener (traverseListener);
	data = new GridData (GridData.FILL_HORIZONTAL);
	data.widthHint = 15;
	numColumns.setLayoutData (data);
	new Label (columnGroup, SWT.NONE).setText ("numColumns");
	makeColumnsEqualWidth = new Button (columnGroup, SWT.CHECK);
	makeColumnsEqualWidth.setText ("makeColumnsEqualWidth");
	makeColumnsEqualWidth.addSelectionListener (selectionListener);
	data = new GridData (GridData.FILL_HORIZONTAL);
	data.horizontalSpan = 2;
	data.horizontalIndent = 14;
	makeColumnsEqualWidth.setLayoutData (data);

	/* Add common controls */
	super.createControlWidgets ();
	controlGroup.pack();
	}

	/**
	* Creates the example layout.
	*/
	void createLayout () {
	gridLayout = new GridLayout ();
	layoutComposite.setLayout (gridLayout);
	}

	/**
	* Disposes the editors without placing their contents
	* into the table.
	*/
	void disposeEditors () {
	comboEditor.setEditor (null, null, -1);
	combo.dispose ();
	widthText.dispose ();
	heightText.dispose ();
	hAlign.dispose ();
	vAlign.dispose ();
	hIndent.dispose ();
	hSpan.dispose ();
	vSpan.dispose ();
	hGrab.dispose ();
	vGrab.dispose ();
	}

	/**
	* Generates code for the example layout.
	*/
	StringBuffer generateLayoutCode () {
	StringBuffer code = new StringBuffer ();
	code.append ("\t\tGridLayout gridLayout = new GridLayout ();\n");
	if (gridLayout.numColumns != 1) {
	code.append ("\t\tgridLayout.numColumns = " + gridLayout.numColumns + ";\n");
	}
	if (gridLayout.makeColumnsEqualWidth) {
	code.append ("\t\tgridLayout.makeColumnsEqualWidth = true;\n");
	}
	if (gridLayout.marginHeight != 5) {
	code.append ("\t\tgridLayout.marginHeight = " + gridLayout.marginHeight + ";\n");
	}
	if (gridLayout.marginWidth != 5) {
	code.append ("\t\tgridLayout.marginWidth = " + gridLayout.marginWidth + ";\n");
	}
	if (gridLayout.horizontalSpacing != 5) {
	code.append ("\t\tgridLayout.horizontalSpacing = " + gridLayout.horizontalSpacing + ";\n");
	}
	if (gridLayout.verticalSpacing != 5) {
	code.append ("\t\tgridLayout.verticalSpacing = " + gridLayout.verticalSpacing + ";\n");
	}
	code.append ("\t\tshell.setLayout (gridLayout);\n");

	boolean first = true;
	for (int i = 0; i < children.length; i++) {
	Control control = children [i];
	code.append (getChildCode (control, i));
	GridData data = (GridData) control.getLayoutData ();
	if (data != null) {
	code.append ("\t\t");
	if (first) {
	code.append ("GridData ");
	first = false;
	}
	code.append ("data = new GridData ();\n");
	if (data.widthHint != SWT.DEFAULT) {
	code.append ("\t\tdata.widthHint = " + data.widthHint + ";\n");
	}
	if (data.heightHint != SWT.DEFAULT) {
	code.append ("\t\tdata.heightHint = " + data.heightHint + ";\n");
	}
	if (data.horizontalAlignment != GridData.BEGINNING) {
	String alignment;
	int hAlignment = data.horizontalAlignment;
	if (hAlignment == GridData.CENTER) alignment = "GridData.CENTER";
	else if (hAlignment == GridData.END) alignment = "GridData.END";
	else alignment = "GridData.FILL";
	code.append ("\t\tdata.horizontalAlignment = " + alignment + ";\n");
	}
	if (data.verticalAlignment != GridData.CENTER) {
	String alignment;
	int vAlignment = data.verticalAlignment;
	if (vAlignment == GridData.BEGINNING) alignment = "GridData.BEGINNING";
	else if (vAlignment == GridData.END) alignment = "GridData.END";
	else alignment = "GridData.FILL";
	code.append ("\t\tdata.verticalAlignment = " + alignment + ";\n");
	}
	if (data.horizontalIndent != 0) {
	code.append ("\t\tdata.horizontalIndent = " + data.horizontalIndent + ";\n");
	}
	if (data.horizontalSpan != 1) {
	code.append ("\t\tdata.horizontalSpan = " + data.horizontalSpan + ";\n");
	}
	if (data.verticalSpan != 1) {
	code.append ("\t\tdata.verticalSpan = " + data.verticalSpan + ";\n");
	}
	if (data.grabExcessHorizontalSpace) {
	code.append ("\t\tdata.grabExcessHorizontalSpace = true;\n");
	}
	if (data.grabExcessVerticalSpace) {
	code.append ("\t\tdata.grabExcessVerticalSpace = true;\n");
	}
	if (code.substring (code.length () - 33).equals ("GridData data = new GridData ();\n")) {
	code.delete (code.length () - 33, code.length ());
	first = true;
	} else if (code.substring (code.length () - 24).equals ("data = new GridData ();\n")) {
	code.delete (code.length () - 24, code.length ());
	} else {
	code.append ("\t\t" + names [i] + ".setLayoutData (data);\n");
	}
	}
	}
	return code;
	}

	/**
	* Returns the layout data field names.
	*/
	String [] getLayoutDataFieldNames() {
	return new String [] {
	"",
	"Control",
	"width",
	"height",
	"horizontalAlignment",
	"verticalAlignment",
	"horizontalIndent",
	"horizontalSpan",
	"verticalSpan",
	"grabExcessHorizontalSpace",
	"grabExcessVerticalSpace"
	};
	}

	/**
	* Gets the text for the tab folder item.
	*/
	String getTabText () {
	return "GridLayout";
	}

	/**
	* Takes information from TableEditors and stores it.
	*/
	void resetEditors () {
	resetEditors (false);
	}

	void resetEditors (boolean tab) {
	TableItem oldItem = comboEditor.getItem ();
	if (oldItem != null) {
	int row = table.indexOf (oldItem);
	try {
	new Integer (widthText.getText ()).intValue ();
	} catch (NumberFormatException e) {
	widthText.setText (oldItem.getText (WIDTH_COL));
	}
	try {
	new Integer (heightText.getText ()).intValue ();
	} catch (NumberFormatException e) {
	heightText.setText (oldItem.getText (HEIGHT_COL));
	}
	try {
	new Integer (hIndent.getText ()).intValue ();
	} catch (NumberFormatException e) {
	hIndent.setText (oldItem.getText (HINDENT_COL));
	}
	try {
	new Integer (hSpan.getText ()).intValue ();
	} catch (NumberFormatException e) {
	hSpan.setText (oldItem.getText (HSPAN_COL));
	}
	try {
	new Integer (vSpan.getText ()).intValue ();
	} catch (NumberFormatException e) {
	vSpan.setText (oldItem.getText (VSPAN_COL));
	}
	String [] insert = new String [] {
	String.valueOf (row), combo.getText (), widthText.getText (), heightText.getText (),
	hAlign.getText (), vAlign.getText (), hIndent.getText (),
	hSpan.getText (), vSpan.getText (), hGrab.getText (), vGrab.getText ()
	};
	data.setElementAt (insert, row);
	for (int i = 0; i < TOTAL_COLS; i++) {
	oldItem.setText (i, ((String [])data.elementAt (row)) [i]);
	}
	if (!tab) disposeEditors ();
	}
	setLayoutState ();
	refreshLayoutComposite ();
	setLayoutData ();
	layoutComposite.layout (true);
	layoutGroup.layout (true);
	}

	/**
	* Sets the layout data for the children of the layout.
	*/
	void setLayoutData () {
	Control [] children = layoutComposite.getChildren ();
	TableItem [] items = table.getItems ();
	GridData data;
	int hIndent, hSpan, vSpan;
	String vAlign, hAlign, vGrab, hGrab;
	for (int i = 0; i < children.length; i++) {
	data = new GridData ();
	/* Set widthHint and heightHint */
	data.widthHint = new Integer (items [i].getText (WIDTH_COL)).intValue ();
	data.heightHint = new Integer (items [i].getText (HEIGHT_COL)).intValue ();
	/* Set vertical alignment and horizontal alignment */
	hAlign = items [i].getText (HALIGN_COL);
	if (hAlign.equals ("CENTER")) {
	data.horizontalAlignment = GridData.CENTER;
	} else if (hAlign.equals ("END")) {
	data.horizontalAlignment = GridData.END;
	} else if (hAlign.equals ("FILL")) {
	data.horizontalAlignment = GridData.FILL;
	} else {
	data.horizontalAlignment = GridData.BEGINNING;
	}
	vAlign = items [i].getText (VALIGN_COL);
	if (vAlign.equals ("BEGINNING")) {
	data.verticalAlignment = GridData.BEGINNING;
	} else if (vAlign.equals ("END")) {
	data.verticalAlignment = GridData.END;
	} else if (vAlign.equals ("FILL")) {
	data.verticalAlignment = GridData.FILL;
	} else {
	data.verticalAlignment = GridData.CENTER;
	}
	/* Set indents and spans */
	hIndent = new Integer (items [i].getText (HINDENT_COL)).intValue ();
	data.horizontalIndent = hIndent;
	hSpan = new Integer (items [i].getText (HSPAN_COL)).intValue ();
	data.horizontalSpan = hSpan;
	vSpan = new Integer (items [i].getText (VSPAN_COL)).intValue ();
	data.verticalSpan = vSpan;
	/* Set grabbers */
	hGrab = items [i].getText (HGRAB_COL);
	if (hGrab.equals ("true")) {
	data.grabExcessHorizontalSpace = true;
	} else {
	data.grabExcessHorizontalSpace = false;
	}
	vGrab = items [i].getText (VGRAB_COL);
	if (vGrab.equals ("true")) {
	data.grabExcessVerticalSpace = true;
	} else {
	data.grabExcessVerticalSpace = false;
	}
	children [i].setLayoutData (data);
	}
	}

	/**
	* Sets the state of the layout.
	*/
	void setLayoutState () {
	/* Set the columns for the layout */
	try {
	gridLayout.numColumns = new Integer (numColumns.getText ()).intValue ();
	} catch (NumberFormatException e) {
	gridLayout.numColumns = 1;
	}
	gridLayout.makeColumnsEqualWidth = makeColumnsEqualWidth.getSelection ();

	/* Set the margins and spacing */
	try {
	gridLayout.marginHeight = new Integer (marginHeight.getText ()).intValue ();
	} catch (NumberFormatException e) {
	gridLayout.marginHeight = 5;
	marginHeight.select (2);
	}
	try {
	gridLayout.marginWidth = new Integer (marginWidth.getText ()).intValue ();
	} catch (NumberFormatException e) {
	gridLayout.marginWidth = 5;
	marginWidth.select (2);
	}
	try {
	gridLayout.horizontalSpacing = new Integer (horizontalSpacing.getText ()).intValue ();
	} catch (NumberFormatException e) {
	gridLayout.horizontalSpacing = 5;
	horizontalSpacing.select (2);
	}
	try {
	gridLayout.verticalSpacing = new Integer (verticalSpacing.getText ()).intValue ();
	} catch (NumberFormatException e) {
	gridLayout.verticalSpacing = 5;
	verticalSpacing.select (2);
	}
	}
	}