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/*****************************************************************************
* Copyright (c) 2010 CEA LIST.
*
* 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:
* Nicolas Guyomar (Mia-Software) - initial API and implementation
* Nicolas Guyomar (Mia-Software) - Bug 334546 - [celleditors] no border on Text field
* Nicolas Bros (Mia-Software) - Bug 334539 - [celleditors] change listener
*****************************************************************************/
package org.eclipse.papyrus.emf.facet.widgets.celleditors.ecore.composite;
import org.eclipse.papyrus.emf.facet.util.core.Logger;
import org.eclipse.papyrus.emf.facet.widgets.celleditors.AbstractCellEditorComposite;
import org.eclipse.papyrus.emf.facet.widgets.celleditors.ecore.Activator;
import org.eclipse.papyrus.emf.facet.widgets.celleditors.ecore.ui.MultiLineDialog;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.DisposeEvent;
import org.eclipse.swt.events.DisposeListener;
import org.eclipse.swt.events.KeyAdapter;
import org.eclipse.swt.events.KeyEvent;
import org.eclipse.swt.events.ModifyEvent;
import org.eclipse.swt.events.ModifyListener;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.swt.widgets.Text;
/** A cell editor for Strings */
public class StringMultiComposite<T> extends AbstractCellEditorComposite<String> {
/** the control that is used to edit the contents of the cell */
private final Button button;
private Text text = null;
private final Composite parentControl;
/** the original value of the cell */
private String originalFieldValue;
public StringMultiComposite(final Composite parent, final Object originalValue, final int style) {
super(parent);
this.parentControl = parent;
GridLayout gd = new GridLayout(2, false);
gd.marginHeight = 0;
gd.marginWidth = 0;
gd.horizontalSpacing = 0;
setLayout(gd);
this.text = new Text(this, style);
this.text.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, false));
this.button = new Button(this, SWT.PUSH);
this.button.setText("..."); //$NON-NLS-1$
GridData data = new GridData(SWT.FILL, SWT.FILL, false, true);
this.button.setLayoutData(data);
if (originalValue != null) {
if (originalValue instanceof String) {
this.setValue((String) originalValue);
this.text.setSelection(0, ((String) originalValue).length());
} else {
Logger.logError("An instance of String was expected", Activator.getDefault()); //$NON-NLS-1$
}
}
this.button.addSelectionListener(new SelectionAdapter() {
@Override
public void widgetSelected(final SelectionEvent e) {
MultiLineDialog dialog = new MultiLineDialog(StringMultiComposite.this
.getParentControl().getShell(), StringMultiComposite.this.getValue()) {
@Override
protected void okPressed() {
StringMultiComposite.this.originalFieldValue = getTextArea().getText();
StringMultiComposite.this.getText().setText(getTextArea().getText());
StringMultiComposite.this.commit();
super.okPressed();
}
};
dialog.open();
}
});
// commit the cell editor when the mouse is clicked
// anywhere outside the text field
final Listener clickListener = new Listener() {
public void handleEvent(final Event event) {
if (event.widget instanceof Control) {
Control control = (Control) event.widget;
if (control.getShell() == StringMultiComposite.this.getParentControl()
.getShell()) {
if (event.widget != StringMultiComposite.this.getButton()) {
if (event.widget != StringMultiComposite.this.getText()) {
if (StringMultiComposite.this.getText().getEditable()) {
StringMultiComposite.this.commit();
} else {
StringMultiComposite.this.close();
}
}
}
}
}
}
};
Display.getDefault().addFilter(SWT.MouseDown, clickListener);
// this listener is only here to remove
// the other listener from the Display
this.text.addDisposeListener(new DisposeListener() {
public void widgetDisposed(final DisposeEvent e) {
Display.getDefault().removeFilter(SWT.MouseDown, clickListener);
}
});
this.text.addKeyListener(new KeyAdapter() {
@Override
public void keyPressed(final KeyEvent event) {
// Enter key pressed
if ((event.keyCode == SWT.CR && event.stateMask == 0)
|| (event.keyCode == SWT.KEYPAD_CR && event.stateMask == 0)) {
if (StringMultiComposite.this.getText().getEditable()) {
StringMultiComposite.this.commit();
}
} else if (event.keyCode == SWT.ESC && event.stateMask == 0) {
// Escape key pressed
close();
}
}
});
this.text.addModifyListener(new ModifyListener() {
public void modifyText(final ModifyEvent e) {
fireChanged();
}
});
this.text.forceFocus();
}
public StringMultiComposite(final Composite parent, final int style) {
this(parent, null, style);
}
public StringMultiComposite(final Composite parent, final Object originalValue) {
this(parent, originalValue, SWT.NONE);
}
protected void commit() {
fireCommit();
}
public void setValue(final String value) {
this.originalFieldValue = value;
if (value == null) {
this.text.setText(""); //$NON-NLS-1$
} else {
// If the text contains a newline then edition is not possible, the user
// has to use the Dialog Editor
if (value.indexOf('\n') != -1) {
String truncatedValue = value.substring(0, value.indexOf('\n') - 1).concat("..."); //$NON-NLS-1$
this.text.setText(truncatedValue);
this.text.setEditable(false);
} else {
this.text.setText(value);
this.text.setSelection(0, value.length());
}
}
}
public String getValue() {
if (this.text.getEditable()) {
return this.text.getText();
}
return getOriginalFieldValue();
}
public Button getButton() {
return this.button;
}
public Composite getParentControl() {
return this.parentControl;
}
public String getOriginalFieldValue() {
return this.originalFieldValue;
}
protected Text getText() {
return this.text;
}
}
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