UNSUPPORTED_ENCODING=Project {0} specifies an unknown character encoding {1}

CLOSE=Close

import java.nio.charset.Charset;

    public static Charset showUnsupportedEncodingDialog(String projectName, String unknownCharset) {

        return UnsupportedEncodingDialog.showDialog (projectName, unknownCharset);

    }

<?xml version="1.0" encoding="UTF-8" ?>

<Form version="1.5" maxVersion="1.7" type="org.netbeans.modules.form.forminfo.JPanelFormInfo">

  <AuxValues>

    <AuxValue name="FormSettings_autoResourcing" type="java.lang.Integer" value="1"/>

    <AuxValue name="FormSettings_autoSetComponentName" type="java.lang.Boolean" value="false"/>

    <AuxValue name="FormSettings_generateFQN" type="java.lang.Boolean" value="true"/>

    <AuxValue name="FormSettings_generateMnemonicsCode" type="java.lang.Boolean" value="false"/>

    <AuxValue name="FormSettings_i18nAutoMode" type="java.lang.Boolean" value="true"/>

    <AuxValue name="FormSettings_layoutCodeTarget" type="java.lang.Integer" value="2"/>

    <AuxValue name="FormSettings_listenerGenerationStyle" type="java.lang.Integer" value="0"/>

    <AuxValue name="FormSettings_variablesLocal" type="java.lang.Boolean" value="false"/>

    <AuxValue name="FormSettings_variablesModifier" type="java.lang.Integer" value="2"/>

    <AuxValue name="designerSize" type="java.awt.Dimension" value="-84,-19,0,5,115,114,0,18,106,97,118,97,46,97,119,116,46,68,105,109,101,110,115,105,111,110,65,-114,-39,-41,-84,95,68,20,2,0,2,73,0,6,104,101,105,103,104,116,73,0,5,119,105,100,116,104,120,112,0,0,0,80,0,0,1,-113"/>

  </AuxValues>

  <Layout class="org.netbeans.modules.form.compat2.layouts.DesignGridBagLayout"/>

  <SubComponents>

    <Component class="javax.swing.JLabel" name="instructions">

      <Properties>

        <Property name="labelFor" type="java.awt.Component" editor="org.netbeans.modules.form.ComponentChooserEditor">

          <ComponentRef name="charsetComboBox"/>

        </Property>

        <Property name="text" type="java.lang.String" editor="org.netbeans.modules.i18n.form.FormI18nStringEditor">

          <ResourceString bundle="org/netbeans/modules/javacard/project/ui/Bundle.properties" key="UnsupportedEncodingDialog.instructions.text" replaceFormat="org.openide.util.NbBundle.getMessage({sourceFileName}.class, &quot;{key}&quot;, {arguments})"/>

        </Property>

      </Properties>

      <Constraints>

        <Constraint layoutClass="org.netbeans.modules.form.compat2.layouts.DesignGridBagLayout" value="org.netbeans.modules.form.compat2.layouts.DesignGridBagLayout$GridBagConstraintsDescription">

          <GridBagConstraints gridX="-1" gridY="-1" gridWidth="1" gridHeight="1" fill="0" ipadX="0" ipadY="0" insetsTop="12" insetsLeft="12" insetsBottom="0" insetsRight="12" anchor="18" weightX="0.5" weightY="0.0"/>

        </Constraint>

      </Constraints>

    </Component>

    <Component class="javax.swing.JComboBox" name="charsetComboBox">

      <Properties>

        <Property name="model" type="javax.swing.ComboBoxModel" editor="org.netbeans.modules.form.editors2.ComboBoxModelEditor">

          <StringArray count="1">

            <StringItem index="0" value="[Loading all character sets]"/>

          </StringArray>

        </Property>

        <Property name="enabled" type="boolean" value="false"/>

      </Properties>

      <Constraints>

        <Constraint layoutClass="org.netbeans.modules.form.compat2.layouts.DesignGridBagLayout" value="org.netbeans.modules.form.compat2.layouts.DesignGridBagLayout$GridBagConstraintsDescription">

          <GridBagConstraints gridX="0" gridY="1" gridWidth="1" gridHeight="1" fill="2" ipadX="0" ipadY="0" insetsTop="5" insetsLeft="12" insetsBottom="12" insetsRight="12" anchor="18" weightX="0.5" weightY="0.0"/>

        </Constraint>

      </Constraints>

    </Component>

  </SubComponents>

</Form>

package org.netbeans.modules.java.api.common.project.ui;

import java.awt.Cursor;

import java.awt.EventQueue;

import java.nio.charset.Charset;

import java.text.MessageFormat;

import java.util.Map;

import java.util.SortedMap;

import javax.swing.DefaultComboBoxModel;

import org.netbeans.api.queries.FileEncodingQuery;

import org.openide.DialogDescriptor;

import org.openide.DialogDisplayer;

import org.openide.util.HelpCtx;

import org.openide.util.NbBundle;

import org.openide.util.RequestProcessor;

/**

 *

 * @author Tim Boudreau

 */

final class UnsupportedEncodingDialog extends javax.swing.JPanel implements Runnable {

    private final DefaultComboBoxModel mdl = new DefaultComboBoxModel();

    private DialogDescriptor descriptor;

    /** Creates new form UnsupportedEncodingDialog */

    public UnsupportedEncodingDialog() {

        initComponents();

        Cursor cursor = Cursor.getPredefinedCursor(Cursor.WAIT_CURSOR);

        setCursor(cursor);

        instructions.setCursor(cursor);

        charsetComboBox.setCursor(cursor);

    }

    void setDialogDescriptor(DialogDescriptor d) {

        this.descriptor = d;

    }

    public static Charset showDialog(String projectName, String requestedCharset) {

        UnsupportedEncodingDialog pnl = new UnsupportedEncodingDialog();

        String s = pnl.instructions.getText();

        MessageFormat.format(s, new Object[] { requestedCharset });

        String title = NbBundle.getMessage(UnsupportedEncodingDialog.class,

                "UNSUPPORTED_ENCODING", requestedCharset, projectName); //NO18N

        String close = NbBundle.getMessage(UnsupportedEncodingDialog.class,

                "CLOSE"); //NOI18N

        DialogDescriptor des = new DialogDescriptor (pnl,

                title, true, new Object[] { close },

                close, DialogDescriptor.DEFAULT_ALIGN,

                HelpCtx.DEFAULT_HELP, null); //NOI18N

        pnl.setDialogDescriptor(des);

        DialogDisplayer.getDefault().notify(des);

        return pnl.getSelectedCharset();

    }

    private Charset getSelectedCharset() {

        Object o = charsetComboBox.getSelectedItem();

        if (o instanceof Entry) {

            return ((Entry) o).charset;

        } else {

            //should never happen

            return FileEncodingQuery.getDefaultEncoding();

        }

    }

    /** This method is called from within the constructor to

     * initialize the form.

     * WARNING: Do NOT modify this code. The content of this method is

     * always regenerated by the Form Editor.

     */

    @SuppressWarnings("unchecked")

    // <editor-fold defaultstate="collapsed" desc="Generated Code">//GEN-BEGIN:initComponents

    private void initComponents() {

        java.awt.GridBagConstraints gridBagConstraints;

        instructions = new javax.swing.JLabel();

        charsetComboBox = new javax.swing.JComboBox();

        setLayout(new java.awt.GridBagLayout());

        instructions.setLabelFor(charsetComboBox);

        instructions.setText(org.openide.util.NbBundle.getMessage(UnsupportedEncodingDialog.class, "UnsupportedEncodingDialog.instructions.text", new Object[] {})); // NOI18N

        gridBagConstraints = new java.awt.GridBagConstraints();

        gridBagConstraints.anchor = java.awt.GridBagConstraints.NORTHWEST;

        gridBagConstraints.weightx = 0.5;

        gridBagConstraints.insets = new java.awt.Insets(12, 12, 0, 12);

        add(instructions, gridBagConstraints);

        charsetComboBox.setModel(new javax.swing.DefaultComboBoxModel(new String[] { "[Loading all character sets]" }));

        charsetComboBox.setEnabled(false);

        gridBagConstraints = new java.awt.GridBagConstraints();

        gridBagConstraints.gridx = 0;

        gridBagConstraints.gridy = 1;

        gridBagConstraints.fill = java.awt.GridBagConstraints.HORIZONTAL;

        gridBagConstraints.anchor = java.awt.GridBagConstraints.NORTHWEST;

        gridBagConstraints.weightx = 0.5;

        gridBagConstraints.insets = new java.awt.Insets(5, 12, 12, 12);

        add(charsetComboBox, gridBagConstraints);

    }// </editor-fold>//GEN-END:initComponents

    @Override

    public void addNotify() {

        super.addNotify();

        RequestProcessor.getDefault().post(this);

    }

    // Variables declaration - do not modify//GEN-BEGIN:variables

    private javax.swing.JComboBox charsetComboBox;

    private javax.swing.JLabel instructions;

    // End of variables declaration//GEN-END:variables

    @Override

    public void run() {

        if (!EventQueue.isDispatchThread()) {

            try {

                Entry use = null;

                Charset def = FileEncodingQuery.getDefaultEncoding();

                if (!EventQueue.isDispatchThread()) {

                    SortedMap<String, Charset> m = Charset.availableCharsets();

                    for (Map.Entry<String, Charset> e : m.entrySet()) {

                        Entry entry = new Entry(e.getKey(), e.getValue());

                        if (def.equals(e.getValue())) {

                            use = entry;

                        }

                        mdl.addElement(entry);

                    }

                }

                if (use != null) {

                    mdl.setSelectedItem(use);

                }

            } finally {

                EventQueue.invokeLater(this);

            }

        } else {

            charsetComboBox.setModel(mdl);

            charsetComboBox.setEnabled(true);

            Cursor cursor = Cursor.getPredefinedCursor(Cursor.DEFAULT_CURSOR);

            setCursor(cursor);

            instructions.setCursor(cursor);

            charsetComboBox.setCursor(cursor);

            if (descriptor != null) {

                descriptor.setValid(false);

            }

        }

    }

    private static final class Entry {

        String nm;

        Charset charset;

        public Entry(String nm, Charset charset) {

            this.nm = nm;

            this.charset = charset;

        }

        @Override

        public String toString() {

            return charset.displayName();

        }

    }

}

import org.netbeans.modules.java.api.common.project.ui.ProjectUISupport;

            String prop = eval.getProperty(J2SEProjectProperties.SOURCE_ENCODING);

            Charset c = null;

            boolean updated = false;

            if (prop != null) {

                try {

                    c = Charset.forName(prop);

                } catch (IllegalCharsetNameException e) {

                    //Broken property, log & ignore

                    Logger LOG = Logger.getLogger(J2SEProject.class.getName());

                    LOG.warning("Illegal charset: " + prop + " in project: " + FileUtil.getFileDisplayName(getProjectDirectory())); //NOI18N

                    } catch (UnsupportedCharsetException e) {

                    //todo: Needs UI notification like broken references.

                    Logger LOG = Logger.getLogger(J2SEProject.class.getName());

                    LOG.warning("Unsupported charset: " + prop + " in project: " + FileUtil.getFileDisplayName(getProjectDirectory())); //NOI18N

                    }

                if (c == null) {

                    String name = getLookup().lookup(ProjectInformation.class).getDisplayName();

                    c = ProjectUISupport.showUnsupportedEncodingDialog(name, prop);

                    updated = true;

                }

            }

            final Charset updatedCharset = updated ? c : null;

                                if (updatedCharset != null) {

                                    ep.setProperty(J2SEProjectProperties.SOURCE_ENCODING,

                                            updatedCharset.name());

                                }