net.tourbook.preferences.PrefPageAppearanceTourEditor.java Source code

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Here is the source code for net.tourbook.preferences.PrefPageAppearanceTourEditor.java

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/*******************************************************************************
 * Copyright (C) 2005, 2013  Wolfgang Schramm and Contributors
 * 
 * This program is free software; you can redistribute it and/or modify it under
 * the terms of the GNU General Public License as published by the Free Software
 * Foundation version 2 of the License.
 * 
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License along with
 * this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110, USA
 *******************************************************************************/
package net.tourbook.preferences;

import net.tourbook.Messages;
import net.tourbook.application.TourbookPlugin;
import net.tourbook.common.UI;

import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.jface.layout.GridDataFactory;
import org.eclipse.jface.layout.GridLayoutFactory;
import org.eclipse.jface.preference.FieldEditorPreferencePage;
import org.eclipse.jface.preference.IPreferenceStore;
import org.eclipse.jface.preference.IntegerFieldEditor;
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Group;
import org.eclipse.ui.IWorkbench;
import org.eclipse.ui.IWorkbenchPreferencePage;

public class PrefPageAppearanceTourEditor extends FieldEditorPreferencePage implements IWorkbenchPreferencePage {

    private int fOldDescriptionLines;

    @Override
    protected void createFieldEditors() {

        final Composite parent = getFieldEditorParent();
        GridLayoutFactory.fillDefaults().applyTo(parent);

        createUI(parent);

    }

    private void createUI(final Composite parent) {

        final Group group = new Group(parent, SWT.NONE);
        GridDataFactory.fillDefaults().grab(true, false).applyTo(group);

        // text: description height
        final IntegerFieldEditor fieldEditor = new IntegerFieldEditor(
                ITourbookPreferences.TOUR_EDITOR_DESCRIPTION_HEIGHT, Messages.pref_tour_editor_description_height,
                group);
        fieldEditor.setValidRange(2, 100);
        fieldEditor.getLabelControl(group).setToolTipText(Messages.pref_tour_editor_description_height_tooltip);
        UI.setFieldWidth(group, fieldEditor, UI.DEFAULT_FIELD_WIDTH);
        addField(fieldEditor);

        // set margins after the field editors are added
        final GridLayout groupLayout = (GridLayout) group.getLayout();
        groupLayout.marginWidth = 5;
        groupLayout.marginHeight = 5;
    }

    public void init(final IWorkbench workbench) {
        final IPreferenceStore prefStore = TourbookPlugin.getDefault().getPreferenceStore();
        setPreferenceStore(prefStore);

        fOldDescriptionLines = prefStore.getInt(ITourbookPreferences.TOUR_EDITOR_DESCRIPTION_HEIGHT);
    }

    @Override
    public boolean performOk() {

        final boolean isOK = super.performOk();

        final IPreferenceStore prefStore = TourbookPlugin.getDefault().getPreferenceStore();
        final int newDescriptionLines = prefStore.getInt(ITourbookPreferences.TOUR_EDITOR_DESCRIPTION_HEIGHT);
        if (fOldDescriptionLines != newDescriptionLines) {
            MessageDialog.openInformation(Display.getCurrent().getActiveShell(),
                    Messages.pref_tour_editor_dlg_desc_height_title,
                    Messages.pref_tour_editor_dlg_desc_height_message);
        }
        return isOK;
    }
}