org.eclipse.etrice.ui.common.preferences.ETricePreferencePage.java Source code

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Here is the source code for org.eclipse.etrice.ui.common.preferences.ETricePreferencePage.java

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/*******************************************************************************
 * Copyright (c) 2011 protos software gmbh (http://www.protos.de).
 * 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:
 *       Henrik Rentz-Reichert (initial contribution)
 * 
 *******************************************************************************/

package org.eclipse.etrice.ui.common.preferences;

import org.eclipse.draw2d.ColorConstants;
import org.eclipse.etrice.ui.common.Activator;
import org.eclipse.jface.preference.BooleanFieldEditor;
import org.eclipse.jface.preference.FieldEditorPreferencePage;
import org.eclipse.jface.preference.StringFieldEditor;
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.widgets.Button;
import org.eclipse.swt.widgets.Label;
import org.eclipse.ui.IWorkbench;
import org.eclipse.ui.IWorkbenchPreferencePage;

public class ETricePreferencePage extends FieldEditorPreferencePage implements IWorkbenchPreferencePage {

    private BooleanFieldEditor snap;
    private StringFieldEditor hor;
    private StringFieldEditor ver;
    private Button useGridCheck;

    public ETricePreferencePage() {
        super(GRID);
        setPreferenceStore(Activator.getDefault().getPreferenceStore());
        setDescription("eTrice Preferences");
    }

    public void createFieldEditors() {
        addLabel("");
        addLabel("Diagram Editors");
        addField(new BooleanFieldEditor(PreferenceConstants.CONFIRM_DELETE, "&Confirm diagram element deletion",
                getFieldEditorParent()));

        BooleanFieldEditor useGrid = new BooleanFieldEditor(PreferenceConstants.USE_GRID,
                "Use &Grid (grid settings apply to new diagrams only)", getFieldEditorParent());
        addField(useGrid);

        snap = new BooleanFieldEditor(PreferenceConstants.SNAP_TO_GRID, "&Snap to Grid", getFieldEditorParent());
        addField(snap);

        hor = new StringFieldEditor(PreferenceConstants.HOR_GRID_UNIT, "&Horizontal Grid Unit [px]:",
                getFieldEditorParent());
        addField(hor);

        ver = new StringFieldEditor(PreferenceConstants.VER_GRID_UNIT, "&Vertical Grid Unit [px]:",
                getFieldEditorParent());
        addField(ver);

        useGridCheck = (Button) useGrid.getDescriptionControl(getFieldEditorParent());
        useGridCheck.addSelectionListener(new SelectionListener() {

            @Override
            public void widgetSelected(SelectionEvent e) {
                updateGridFields();
            }

            @Override
            public void widgetDefaultSelected(SelectionEvent e) {
                updateGridFields();
            }
        });
    }

    @Override
    protected void initialize() {
        super.initialize();
        updateGridFields();
    }

    private void updateGridFields() {
        boolean enabled = useGridCheck.getSelection();
        snap.setEnabled(enabled, getFieldEditorParent());
        hor.setEnabled(enabled, getFieldEditorParent());
        ver.setEnabled(enabled, getFieldEditorParent());
    }

    /* (non-Javadoc)
     * @see org.eclipse.ui.IWorkbenchPreferencePage#init(org.eclipse.ui.IWorkbench)
     */
    public void init(IWorkbench workbench) {
    }

    private void addLabel(String message) {
        Label label = new Label(getFieldEditorParent(), SWT.None);
        GridData data = new GridData(SWT.BEGINNING, SWT.BEGINNING, true, false, 2, 1);
        label.setLayoutData(data);
        label.setForeground(ColorConstants.red);
        if (message != null)
            label.setText(message);
    }

    /* (non-Javadoc)
     * @see org.eclipse.jface.preference.FieldEditorPreferencePage#performOk()
     */
    @Override
    public boolean performOk() {
        boolean ok = super.performOk();

        if (ok) {
            // TODO: apply to open editors
            //         IPreferenceStore store = Activator.getDefault().getPreferenceStore();
            //         boolean snap = store.getBoolean(PreferenceConstants.SNAP_TO_GRID);
            //         boolean useGrid = store.getBoolean(PreferenceConstants.USE_GRID);
            //         int horUnit = useGrid? store.getInt(PreferenceConstants.HOR_GRID_UNIT) : 0;
            //         int verUnit = useGrid? store.getInt(PreferenceConstants.VER_GRID_UNIT) : 0;
            //
            //         IWorkbench wb = PlatformUI.getWorkbench();
            //         IWorkbenchWindow win = wb.getActiveWorkbenchWindow();
            //         IWorkbenchPage page = win.getActivePage();
            //         IEditorReference[] editorReferences = page.getEditorReferences();
            //         for (IEditorReference ref : editorReferences) {
            //            IEditorPart editor = ref.getEditor(true);
            //            if (editor instanceof RoomDiagramEditor) {
            //               Diagram diagram = ((DiagramEditorInput)editor.getEditorInput()).getDiagram();
            //               diagram.setSnapToGrid(snap);
            //               diagram.setGridUnit(horUnit);
            //               diagram.setVerticalGridUnit(verUnit);
            //            }
            //         }
        }

        return ok;
    }
}