org.eclipse.xtext.ui.preferences.ResetPromptDialogSettingsField.java Source code

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Here is the source code for org.eclipse.xtext.ui.preferences.ResetPromptDialogSettingsField.java

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/*******************************************************************************
 * Copyright (c) 2015 itemis AG (http://www.itemis.eu) 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
 *******************************************************************************/
package org.eclipse.xtext.ui.preferences;

import org.eclipse.jface.preference.FieldEditor;
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.Group;
import org.eclipse.swt.widgets.Label;
import org.eclipse.xtext.LanguageInfo;
import org.eclipse.xtext.ui.util.DontAskAgainDialogs;
import org.eclipse.xtext.ui.util.PixelConverter;
import org.eclipse.xtext.ui.util.SWTUtil;

import com.google.inject.Inject;

/**
 * @author Dennis Huebner - Initial contribution and API
 */
public class ResetPromptDialogSettingsField extends FieldEditor {

    private Group dontAskGroup;
    private @Inject DontAskAgainDialogs dialogs;
    private @Inject LanguageInfo languageInfo;

    @Override
    public int getNumberOfControls() {
        return 1;
    }

    public FieldEditor getFieldEditor(Composite parent) {
        return createField(parent, getNumberOfControls());
    }

    @Override
    protected void doStore() {
    }

    @Override
    protected void doLoadDefault() {
    }

    @Override
    protected void doLoad() {
    }

    @Override
    protected void doFillIntoGrid(Composite parent, int numColumns) {
        createField(parent, numColumns);
    }

    protected ResetPromptDialogSettingsField createField(Composite parent, int colums) {
        if (dontAskGroup == null) {
            GridLayout layout = new GridLayout(2, false);
            layout.marginHeight = 0;
            layout.marginWidth = 0;
            dontAskGroup = new Group(parent, SWT.NONE);
            dontAskGroup.setLayout(layout);
            GridData gridData = new GridData(GridData.FILL_HORIZONTAL);
            gridData.horizontalSpan = colums;
            dontAskGroup.setLayoutData(gridData);
            dontAskGroup.setText(languageInfo.getShortName() + Messages.ResetPromptDialogSettingsField_0);

            Label label = new Label(dontAskGroup, SWT.WRAP);
            label.setText(Messages.ResetPromptDialogSettingsField_1);
            label.setFont(parent.getFont());
            GridData data = new GridData(GridData.FILL, GridData.CENTER, true, false);
            data.widthHint = new PixelConverter(parent).convertHorizontalDLUsToPixels(40);
            label.setLayoutData(data);

            Button clearButton = new Button(dontAskGroup, SWT.PUSH);
            clearButton.setText("&Clear"); //$NON-NLS-1$
            GridData layoutData = new GridData(GridData.FILL, GridData.BEGINNING, false, false);
            clearButton.setLayoutData(layoutData);
            clearButton.addSelectionListener(new SelectionListener() {
                @Override
                public void widgetSelected(SelectionEvent e) {
                    unhideAllDialogs();
                }

                @Override
                public void widgetDefaultSelected(SelectionEvent e) {
                    unhideAllDialogs();
                }
            });
            layoutData.widthHint = SWTUtil.getButtonWidthHint(clearButton);
        }
        return this;
    }

    private void unhideAllDialogs() {
        dialogs.forgetAllUserDecisions();
    }

    @Override
    protected void adjustForNumColumns(int numColumns) {
        if (dontAskGroup != null) {
            GridData gd = (GridData) dontAskGroup.getLayoutData();
            gd.horizontalSpan = numColumns;
        }
    }
}