| /******************************************************************************* |
| * 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 |
| *******************************************************************************/ |
| 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.*; |
| |
| class FillLayoutTab extends Tab { |
| /* Controls for setting layout parameters */ |
| Button horizontal, vertical; |
| Spinner marginWidth, marginHeight, spacing; |
| /* The example layout instance */ |
| FillLayout fillLayout; |
| /* TableEditors and related controls*/ |
| TableEditor comboEditor, nameEditor; |
| CCombo combo; |
| Text nameText; |
| final int NAME_COL = 0; |
| final int TOTAL_COLS = 2; |
| |
| /** |
| * Creates the Tab within a given instance of LayoutExample. |
| */ |
| FillLayoutTab(LayoutExample instance) { |
| super(instance); |
| } |
| |
| /** |
| * Creates the widgets in the "child" group. |
| */ |
| void createChildWidgets () { |
| /* Add common controls */ |
| super.createChildWidgets (); |
| |
| /* Add TableEditors */ |
| comboEditor = new TableEditor (table); |
| nameEditor = new TableEditor (table); |
| table.addMouseListener(new MouseAdapter() { |
| public void mouseDown(MouseEvent e) { |
| resetEditors (); |
| index = table.getSelectionIndex (); |
| if (index == -1) return; |
| TableItem oldItem = comboEditor.getItem (); |
| newItem = table.getItem (index); |
| if (newItem == oldItem || newItem != lastSelected) { |
| lastSelected = newItem; |
| return; |
| } |
| table.showSelection (); |
| |
| combo = new CCombo (table, SWT.READ_ONLY); |
| createComboEditor (combo, comboEditor); |
| |
| nameText = new Text(table, SWT.SINGLE); |
| nameText.setText(((String[])data.elementAt(index))[NAME_COL]); |
| createTextEditor(nameText, nameEditor, NAME_COL); |
| } |
| }); |
| } |
| |
| /** |
| * Creates the control widgets. |
| */ |
| void createControlWidgets () { |
| /* Controls the type of FillLayout */ |
| Group typeGroup = new Group (controlGroup, SWT.NONE); |
| typeGroup.setText (LayoutExample.getResourceString ("Type")); |
| typeGroup.setLayout (new GridLayout ()); |
| typeGroup.setLayoutData (new GridData (SWT.FILL, SWT.FILL, true, false)); |
| horizontal = new Button (typeGroup, SWT.RADIO); |
| horizontal.setText ("SWT.HORIZONTAL"); |
| horizontal.setLayoutData(new GridData (SWT.FILL, SWT.CENTER, true, false)); |
| horizontal.setSelection(true); |
| horizontal.addSelectionListener (selectionListener); |
| vertical = new Button (typeGroup, SWT.RADIO); |
| vertical.setText ("SWT.VERTICAL"); |
| vertical.setLayoutData(new GridData (SWT.FILL, SWT.CENTER, true, false)); |
| vertical.addSelectionListener (selectionListener); |
| |
| /* Controls the margins and spacing of the FillLayout */ |
| Group marginGroup = new Group(controlGroup, SWT.NONE); |
| marginGroup.setText (LayoutExample.getResourceString("Margins_Spacing")); |
| marginGroup.setLayout(new GridLayout(2, false)); |
| marginGroup.setLayoutData (new GridData(SWT.FILL, SWT.CENTER, false, false)); |
| new Label(marginGroup, SWT.NONE).setText("marginWidth"); |
| marginWidth = new Spinner(marginGroup, SWT.BORDER); |
| marginWidth.setSelection(0); |
| marginWidth.addSelectionListener(selectionListener); |
| new Label(marginGroup, SWT.NONE).setText("marginHeight"); |
| marginHeight = new Spinner(marginGroup, SWT.BORDER); |
| marginHeight.setSelection(0); |
| marginHeight.setLayoutData(new GridData(SWT.BEGINNING, SWT.CENTER, false, false)); |
| marginHeight.addSelectionListener(selectionListener); |
| new Label(marginGroup, SWT.NONE).setText ("spacing"); |
| spacing = new Spinner(marginGroup, SWT.BORDER); |
| spacing.setSelection(0); |
| spacing.addSelectionListener(selectionListener); |
| |
| /* Add common controls */ |
| super.createControlWidgets (); |
| } |
| |
| /** |
| * Creates the example layout. |
| */ |
| void createLayout () { |
| fillLayout = new FillLayout (); |
| layoutComposite.setLayout (fillLayout); |
| } |
| |
| /** |
| * Disposes the editors without placing their contents |
| * into the table. |
| */ |
| void disposeEditors () { |
| comboEditor.setEditor (null, null, -1); |
| combo.dispose (); |
| nameText.dispose(); |
| } |
| |
| |
| /** |
| * Generates code for the example layout. |
| */ |
| StringBuffer generateLayoutCode () { |
| StringBuffer code = new StringBuffer (); |
| code.append ("\t\tFillLayout fillLayout = new FillLayout ();\n"); |
| if (fillLayout.type == SWT.VERTICAL) { |
| code.append ("\t\tfillLayout.type = SWT.VERTICAL;\n"); |
| } |
| if (fillLayout.marginWidth != 0) { |
| code.append("\t\tfillLayout.marginWidth = " + fillLayout.marginWidth + ";\n"); |
| } |
| if (fillLayout.marginHeight != 0) { |
| code.append("\t\tfillLayout.marginHeight = " + fillLayout.marginHeight + ";\n"); |
| } |
| if (fillLayout.spacing != 0) { |
| code.append("\t\tfillLayout.spacing = " + fillLayout.spacing + ";\n"); |
| } |
| code.append("\t\tshell.setLayout (fillLayout);\n"); |
| for(int i = 0; i < children.length; i++) { |
| Control control = children[i]; |
| code.append(getChildCode(control, i)); |
| } |
| return code; |
| } |
| |
| /** |
| * Returns the string to insert when a new child control is added to the table. |
| */ |
| String[] getInsertString (String name, String controlType) { |
| return new String [] {name, controlType}; |
| } |
| |
| /** |
| * Returns the layout data field names. |
| */ |
| String [] getLayoutDataFieldNames() { |
| return new String [] { "Control Name", "Control Type" }; |
| } |
| |
| /** |
| * Gets the text for the tab folder item. |
| */ |
| String getTabText () { |
| return "FillLayout"; |
| } |
| |
| /** |
| * Takes information from TableEditors and stores it. |
| */ |
| void resetEditors (boolean tab) { |
| TableItem oldItem = comboEditor.getItem (); |
| comboEditor.setEditor (null, null, -1); |
| if (oldItem != null) { |
| int row = table.indexOf (oldItem); |
| try { |
| new String (nameText.getText ()); |
| } catch (NumberFormatException e) { |
| nameText.setText (oldItem.getText (NAME_COL)); |
| } |
| String [] insert = new String [] {nameText.getText (), combo.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 (); |
| layoutComposite.layout (true); |
| layoutGroup.layout (true); |
| } |
| |
| /** |
| * Sets the state of the layout. |
| */ |
| void setLayoutState () { |
| if (vertical.getSelection()) { |
| fillLayout.type = SWT.VERTICAL; |
| } else { |
| fillLayout.type = SWT.HORIZONTAL; |
| } |
| |
| /* Set the margins and spacing */ |
| fillLayout.marginWidth = marginWidth.getSelection(); |
| fillLayout.marginHeight = marginHeight.getSelection(); |
| fillLayout.spacing = spacing.getSelection(); |
| } |
| } |