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/*******************************************************************************
* Copyright (c) 2000, 2017 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.SWT;
import org.eclipse.swt.custom.CCombo;
import org.eclipse.swt.custom.TableEditor;
import org.eclipse.swt.events.MouseListener;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Group;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Spinner;
import org.eclipse.swt.widgets.TableItem;
import org.eclipse.swt.widgets.Text;
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.
*/
@Override
void createChildWidgets () {
/* Add common controls */
super.createChildWidgets ();
/* Add TableEditors */
comboEditor = new TableEditor (table);
nameEditor = new TableEditor (table);
table.addMouseListener(MouseListener.mouseDownAdapter(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(data.get(index)[NAME_COL]);
createTextEditor(nameText, nameEditor, NAME_COL);
}));
}
/**
* Creates the control widgets.
*/
@Override
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.
*/
@Override
void createLayout () {
fillLayout = new FillLayout ();
layoutComposite.setLayout (fillLayout);
}
/**
* Disposes the editors without placing their contents
* into the table.
*/
@Override
void disposeEditors () {
comboEditor.setEditor (null, null, -1);
combo.dispose ();
nameText.dispose();
}
/**
* Generates code for the example layout.
*/
@Override
StringBuilder generateLayoutCode () {
StringBuilder code = new StringBuilder ();
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.
*/
@Override
String[] getInsertString (String name, String controlType) {
return new String [] {name, controlType};
}
/**
* Returns the layout data field names.
*/
@Override
String [] getLayoutDataFieldNames() {
return new String [] { "Control Name", "Control Type" };
}
/**
* Gets the text for the tab folder item.
*/
@Override
String getTabText () {
return "FillLayout";
}
/**
* Takes information from TableEditors and stores it.
*/
@Override
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.set (row, insert);
for (int i = 0 ; i < TOTAL_COLS; i++) {
oldItem.setText (i, data.get (row) [i]);
}
if (!tab) disposeEditors ();
}
setLayoutState ();
refreshLayoutComposite ();
layoutComposite.layout (true);
layoutGroup.layout (true);
}
/**
* Sets the state of the layout.
*/
@Override
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();
}
}
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