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/*******************************************************************************
* Copyright (c) 2001, 2004 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
* Jens Lukowski/Innoopract - initial renaming/restructuring
*
*******************************************************************************/
package org.eclipse.wst.xml.ui.internal.preferences;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.swt.SWT;
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.Combo;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.wst.sse.core.internal.encoding.CommonCharsetNames;
import org.eclipse.wst.xml.ui.internal.XMLUIMessages;
/**
* WorkbenchDefaultEncodingSettings is an extension of EncodingSettings. This
* composite contains EncodingSettings for users to select the encoding they
* desire as well as a checkbox for users to select to use the default
* workbench encoding instead.
*
* @see org.eclipse.wst.xml.ui.internal.preferences.EncodingSettings
*/
public class WorkbenchDefaultEncodingSettings extends Composite {
private final static int INDENT = 15;
private static final String WORKBENCH_DEFAULT = ""; //$NON-NLS-1$
private EncodingSettings fEncodingSettings;
private String fNonDefaultIANA = null;
private Button fUseDefaultButton;
public WorkbenchDefaultEncodingSettings(Composite parent) {
super(parent, SWT.NONE);
createControls();
}
private void createControls() {
GridLayout layout = new GridLayout();
layout.numColumns = 1;
layout.marginWidth = 0;
setLayout(layout);
GridData data = new GridData();
data.verticalAlignment = GridData.FILL;
data.horizontalAlignment = GridData.FILL;
data.grabExcessHorizontalSpace = true;
setLayoutData(data);
Composite defaultEncodingComposite = new Composite(this, SWT.NONE);
layout = new GridLayout();
layout.marginWidth = 0;
layout.marginHeight = 0;
data = new GridData(GridData.FILL_BOTH);
defaultEncodingComposite.setLayout(layout);
defaultEncodingComposite.setLayoutData(data);
fUseDefaultButton = new Button(defaultEncodingComposite, SWT.CHECK);
fUseDefaultButton.setText(XMLUIMessages.WorkbenchDefaultEncodingSettings_0); //$NON-NLS-1$
fUseDefaultButton.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent e) {
handleUseDefaultButtonSelected();
}
});
fEncodingSettings = new EncodingSettings(this);
((GridLayout) fEncodingSettings.getLayout()).marginWidth = 0;
((GridData) fEncodingSettings.getLayoutData()).horizontalIndent = INDENT;
}
private Combo getEncodingCombo() {
return fEncodingSettings.getEncodingCombo();
}
/**
* <code>getIANATag</code> Get the IANA tag equivalent of the selected
* descriptive encoding name. Returns empty string if using workbench
* encoding.
*
* @return a <code>String</code> value
*/
public String getIANATag() {
if (!isDefault())
return fEncodingSettings.getIANATag();
return WORKBENCH_DEFAULT;
}
private String getWorkbenchEncoding() {
return ResourcesPlugin.getEncoding();
}
private void handleUseDefaultButtonSelected() {
if (fUseDefaultButton.getSelection()) {
fNonDefaultIANA = fEncodingSettings.getIANATag();
String workbenchValue = getWorkbenchEncoding();
workbenchValue = CommonCharsetNames.getIanaPreferredCharsetName(workbenchValue);
fEncodingSettings.setIANATag(workbenchValue);
} else if (fNonDefaultIANA != null) {
fEncodingSettings.setIANATag(fNonDefaultIANA);
}
getEncodingCombo().setEnabled(!fUseDefaultButton.getSelection());
fEncodingSettings.setEnabled(!fUseDefaultButton.getSelection());
}
private boolean isDefault() {
return fUseDefaultButton.getSelection();
}
/**
* <code>setEncoding</code> Set the selection in the combo to the
* descriptive encoding name. Selects use workbench encoding if ianaTag is
* null or empty string.
*
*/
public void setIANATag(String ianaTag) {
if (ianaTag == null || ianaTag.equals(WORKBENCH_DEFAULT)) {
fUseDefaultButton.setSelection(true);
handleUseDefaultButtonSelected();
} else {
fUseDefaultButton.setSelection(false);
handleUseDefaultButtonSelected();
if (!isDefault())
fEncodingSettings.setIANATag(ianaTag);
}
}
}
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