org.openscada.vi.details.swt.widgets.DataItemToolTip.java Source code

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Here is the source code for org.openscada.vi.details.swt.widgets.DataItemToolTip.java

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/*
 * This file is part of the openSCADA project
 * Copyright (C) 2006-2012 TH4 SYSTEMS GmbH (http://th4-systems.com)
 *
 * openSCADA is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License version 3
 * only, as published by the Free Software Foundation.
 *
 * openSCADA 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 Lesser General Public License version 3 for more details
 * (a copy is included in the LICENSE file that accompanied this code).
 *
 * You should have received a copy of the GNU Lesser General Public License
 * version 3 along with openSCADA. If not, see
 * <http://opensource.org/licenses/lgpl-3.0.html> for a copy of the LGPLv3 License.
 */

package org.openscada.vi.details.swt.widgets;

import org.eclipse.jface.resource.JFaceResources;
import org.eclipse.jface.resource.LocalResourceManager;
import org.eclipse.jface.viewers.StyledString;
import org.eclipse.jface.window.ToolTip;
import org.eclipse.swt.SWT;
import org.eclipse.swt.custom.StyledText;
import org.eclipse.swt.events.DisposeEvent;
import org.eclipse.swt.events.DisposeListener;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Label;
import org.openscada.da.ui.connection.data.Item;
import org.openscada.vi.details.swt.Activator;

public class DataItemToolTip extends ToolTip {
    private final Item item;

    private Label headerLabel;

    private StyledText text;

    private StyledString currentText;

    private final LocalResourceManager resourceManager;

    public DataItemToolTip(final Control control, final int style, final boolean manualActivation,
            final Item item) {
        super(control, style, manualActivation);

        this.resourceManager = new LocalResourceManager(JFaceResources.getResources());

        this.item = item;
    }

    public DataItemToolTip(final Control control, final Item item) {
        super(control);

        this.resourceManager = new LocalResourceManager(JFaceResources.getResources());

        this.item = item;
    }

    @Override
    protected Composite createToolTipContentArea(final Event event, final Composite parent) {
        parent.setLayout(new FillLayout());
        final Composite wrapper = new Composite(parent, SWT.NONE);

        wrapper.addDisposeListener(new DisposeListener() {

            @Override
            public void widgetDisposed(final DisposeEvent e) {
                DataItemToolTip.this.resourceManager.dispose();
            }
        });

        final GridLayout layout = new GridLayout(2, false);
        layout.marginHeight = 10;
        layout.marginWidth = 10;
        layout.horizontalSpacing = 20;
        layout.verticalSpacing = 20;

        wrapper.setLayout(layout);
        wrapper.setBackground(wrapper.getDisplay().getSystemColor(SWT.COLOR_WHITE));
        wrapper.setBackgroundMode(SWT.INHERIT_DEFAULT);

        this.headerLabel = new Label(wrapper, SWT.NONE);
        this.headerLabel.setText(this.item.getId());
        this.headerLabel.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, false, 2, 1));
        this.headerLabel.setFont(JFaceResources.getHeaderFont());

        final Label warnIcon = new Label(wrapper, SWT.NONE);
        warnIcon.setLayoutData(new GridData(SWT.CENTER, SWT.CENTER, false, false));
        warnIcon.setImage(Activator.getDefault().getImageRegistry().get(Activator.IMG_WARN_BIG));

        this.text = new StyledText(wrapper, SWT.MULTI);
        this.text.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));

        if (this.currentText != null) {
            this.text.setText(this.currentText.getString());
            this.text.setStyleRanges(this.currentText.getStyleRanges());
        }

        return wrapper;
    }

    public void setText(final StyledString text) {
        this.currentText = new StyledString();
        this.currentText.append(text);
    }

}