package org.erlide.ui.internal.folding;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import org.eclipse.jface.preference.IPreferenceStore;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.events.SelectionListener;
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.Label;
import org.erlide.ui.editors.erl.folding.IErlangFoldingPreferenceBlock;
import org.erlide.ui.internal.ErlideUIPlugin;
import org.erlide.ui.prefs.PreferenceConstants;
import org.erlide.ui.util.OverlayPreferenceStore;
import org.erlide.ui.util.OverlayPreferenceStore.OverlayKey;
import org.erlide.ui.util.OverlayPreferenceStore.TypeDescriptor;
/**
* Erlang (erlide) default folding preferences.
*/
public class DefaultErlangFoldingPreferenceBlock implements IErlangFoldingPreferenceBlock {
private final IPreferenceStore fStore;
OverlayPreferenceStore fOverlayStore;
private final OverlayKey[] fKeys;
Map<Button, String> fCheckBoxes = new HashMap<Button, String>();
private final SelectionListener fCheckBoxListener = new SelectionListener() {
@Override
public void widgetDefaultSelected(final SelectionEvent e) {
}
@Override
public void widgetSelected(final SelectionEvent e) {
final Button button = (Button) e.widget;
fOverlayStore.setValue(fCheckBoxes.get(button), button.getSelection());
}
};
public DefaultErlangFoldingPreferenceBlock() {
fStore = ErlideUIPlugin.getDefault().getPreferenceStore();
fKeys = createKeys();
fOverlayStore = new OverlayPreferenceStore(fStore, fKeys);
}
private OverlayKey[] createKeys() {
final ArrayList<OverlayKey> overlayKeys = new ArrayList<OverlayKey>();
overlayKeys.add(new OverlayPreferenceStore.OverlayKey(TypeDescriptor.BOOLEAN,
PreferenceConstants.EDITOR_FOLDING_CLAUSES));
overlayKeys.add(new OverlayPreferenceStore.OverlayKey(TypeDescriptor.BOOLEAN,
PreferenceConstants.EDITOR_FOLDING_COMMENTS));
overlayKeys.add(new OverlayPreferenceStore.OverlayKey(TypeDescriptor.BOOLEAN,
PreferenceConstants.EDITOR_FOLDING_HEADER_COMMENTS));
overlayKeys.add(new OverlayPreferenceStore.OverlayKey(TypeDescriptor.BOOLEAN,
PreferenceConstants.EDITOR_FOLDING_TYPESPECS));
return overlayKeys.toArray(new OverlayKey[overlayKeys.size()]);
}
@Override
public Control createControl(final Composite composite) {
fOverlayStore.load();
fOverlayStore.start();
final Composite inner = new Composite(composite, SWT.NONE);
final GridLayout layout = new GridLayout(1, true);
layout.verticalSpacing = 3;
layout.marginWidth = 0;
inner.setLayout(layout);
final Label label = new Label(inner, SWT.LEFT);
label.setText(FoldingMessages.DefaultErlangFoldingPreferenceBlock_title);
addCheckBox(inner,
FoldingMessages.DefaultErlangFoldingPreferenceBlock_header_comments,
PreferenceConstants.EDITOR_FOLDING_HEADER_COMMENTS, 0);
addCheckBox(inner, FoldingMessages.DefaultErlangFoldingPreferenceBlock_clauses,
PreferenceConstants.EDITOR_FOLDING_CLAUSES, 0);
addCheckBox(inner, FoldingMessages.DefaultErlangFoldingPreferenceBlock_comments,
PreferenceConstants.EDITOR_FOLDING_COMMENTS, 0);
addCheckBox(inner, FoldingMessages.DefaultErlangFoldingPreferenceBlock_typespecs,
PreferenceConstants.EDITOR_FOLDING_TYPESPECS, 0);
return inner;
}
private Button addCheckBox(final Composite parent, final String label,
final String key, final int indentation) {
final Button checkBox = new Button(parent, SWT.CHECK);
checkBox.setText(label);
final GridData gd = new GridData(GridData.HORIZONTAL_ALIGN_BEGINNING);
gd.horizontalIndent = indentation;
gd.horizontalSpan = 1;
gd.grabExcessVerticalSpace = false;
checkBox.setLayoutData(gd);
checkBox.addSelectionListener(fCheckBoxListener);
fCheckBoxes.put(checkBox, key);
return checkBox;
}
private void initializeFields() {
final Iterator<Button> it = fCheckBoxes.keySet().iterator();
while (it.hasNext()) {
final Button b = it.next();
final String key = fCheckBoxes.get(b);
b.setSelection(fOverlayStore.getBoolean(key));
}
}
@Override
public void performOk() {
fOverlayStore.propagate();
}
@Override
public void initialize() {
initializeFields();
}
@Override
public void performDefaults() {
fOverlayStore.loadDefaults();
initializeFields();
}
@Override
public void dispose() {
fOverlayStore.stop();
}
}