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/*******************************************************************************
* 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.graphics.*;
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;
int prevSelected = 0;
Text nameText;
final int NAME_COL = 0;
final int TOTAL_COLS = 2;
/**
* Creates the Tab within a given instance of LayoutExample.
*/
FillLayoutTab() {
}
/**
* 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);
}
});
// Add listener to add an element to the table
add.addListener(SWT.Selection, new Listener() {
public void handleEvent(Event event) {
if(event.detail == SWT.ARROW) {
ToolItem item = (ToolItem)event.widget;
ToolBar bar = item.getParent();
Display display = bar.getDisplay();
Shell shell = bar.getShell();
final Menu menu = new Menu(shell, SWT.POP_UP);
for (int i = 0; i < OPTIONS.length; i++) {
final MenuItem newItem = new MenuItem(menu, SWT.RADIO);
newItem.setText(OPTIONS[i]);
newItem.addSelectionListener(new SelectionAdapter (){
public void widgetSelected (SelectionEvent event) {
MenuItem menuItem = (MenuItem)event.widget;
if (menuItem.getSelection()) {
Menu menu = menuItem.getParent();
prevSelected = menu.indexOf(menuItem);
TableItem item = new TableItem (table, SWT.NONE);
String name = menuItem.getText().toLowerCase() + String.valueOf(table.getItemCount() - 1);
String[] insert = new String[] {name, menuItem.getText()};
item.setText(insert);
data.addElement(insert);
resetEditors();
}
}
});
newItem.setSelection(i == prevSelected);
}
Point pt = display.map(bar, null, event.x, event.y);
menu.setLocation(pt.x, pt.y);
menu.setVisible(true);
while(menu != null && !menu.isDisposed() && menu.isVisible()) {
if(!display.readAndDispatch()) {
display.sleep();
}
}
menu.dispose();
} else {
String selection = OPTIONS[prevSelected];
TableItem item = new TableItem(table, 0);
String name = selection.toLowerCase() + String.valueOf(table.indexOf(item));
String[] insert = new String[] {name, selection };
item.setText(insert);
data.addElement(insert);
resetEditors();
}
}
});
}
/**
* 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 FormLayout */
Group marginGroup = new Group(controlGroup, SWT.NONE);
marginGroup.setText (LayoutExample.getResourceString("Margins"));
marginGroup.setLayout(new GridLayout(2, false));
marginGroup.setLayoutData (new GridData(SWT.FILL, SWT.CENTER, true, false));
new Label(marginGroup, SWT.NONE).setText("Margin Width");
marginWidth = new Spinner(marginGroup, SWT.BORDER);
marginWidth.setSelection(0);
marginWidth.addSelectionListener(selectionListener);
new Label(marginGroup, SWT.NONE).setText("Margin Height");
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();
/* Position the sash */
sash.setWeights(new int[] {4,1});
// sash.setWeights(new int[] {6,4});
}
/**
* 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 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() {
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]);
}
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();
}
}
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