de.walware.statet.r.internal.ui.dataeditor.GotoCellDialog.java Source code

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Here is the source code for de.walware.statet.r.internal.ui.dataeditor.GotoCellDialog.java

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/*=============================================================================#
 # Copyright (c) 2013-2015 Stephan Wahlbrink (WalWare.de) 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
 # 
 # Contributors:
 #     Stephan Wahlbrink - initial API and implementation
 #=============================================================================*/

package de.walware.statet.r.internal.ui.dataeditor;

import static org.eclipse.nebula.widgets.nattable.coordinate.Orientation.HORIZONTAL;
import static org.eclipse.nebula.widgets.nattable.coordinate.Orientation.VERTICAL;

import org.eclipse.core.databinding.UpdateValueStrategy;
import org.eclipse.core.databinding.observable.value.WritableValue;
import org.eclipse.jface.databinding.swt.SWTObservables;
import org.eclipse.nebula.widgets.nattable.coordinate.Orientation;
import org.eclipse.nebula.widgets.nattable.coordinate.Range;
import org.eclipse.nebula.widgets.nattable.viewport.IViewportDim;
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Text;

import de.walware.ecommons.databinding.LongValidator;
import de.walware.ecommons.databinding.jface.DataBindingSupport;
import de.walware.ecommons.ui.dialogs.ExtStatusDialog;
import de.walware.ecommons.ui.util.LayoutUtil;

import de.walware.statet.r.ui.dataeditor.RDataTableComposite;

public class GotoCellDialog extends ExtStatusDialog {

    private final RDataTableComposite table;

    private final Text[] indexControls = new Text[2];

    private final Range[] indexRanges = new Range[2]; // 0-based
    private final WritableValue[] indexValues = new WritableValue[2]; // 1-based

    public GotoCellDialog(final RDataTableComposite table) {
        super(table.getShell(), WITH_DATABINDING_CONTEXT);

        this.table = table;

        setTitle("Go to Cell");
        setBlockOnOpen(true);
        setStatusLineAboveButtons(true);
        setHelpAvailable(false);

        for (final Orientation orientation : Orientation.values()) {
            final IViewportDim viewportDim = this.table.getViewport(orientation);
            this.indexRanges[orientation.ordinal()] = new Range(viewportDim.getMinimumOriginPosition(),
                    viewportDim.getScrollable().getPositionCount());
            this.indexValues[orientation.ordinal()] = new WritableValue(
                    Long.valueOf(viewportDim.getOriginPosition() + 1), Long.TYPE);
        }
    }

    @Override
    protected Control createDialogArea(final Composite parent) {
        final Composite composite = new Composite(parent, SWT.NONE);
        composite.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
        composite.setLayout(LayoutUtil.createDialogGrid(2));

        {
            final Label label = new Label(composite, SWT.NONE);
            label.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, false, false));
            label.setText("&Row index:");

            final Text text = new Text(composite, SWT.BORDER | SWT.SINGLE);
            text.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false));
            indexControls[VERTICAL.ordinal()] = text;
        }
        {
            final Label label = new Label(composite, SWT.NONE);
            label.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, false, false));
            label.setText("Co&lumn index:");

            final Text text = new Text(composite, SWT.BORDER | SWT.SINGLE);
            final GridData gd = new GridData(SWT.FILL, SWT.CENTER, true, false);
            gd.widthHint = LayoutUtil.hintWidth(text, 25);
            text.setLayoutData(gd);
            indexControls[HORIZONTAL.ordinal()] = text;
        }

        applyDialogFont(composite);
        return composite;
    }

    @Override
    protected void addBindings(final DataBindingSupport db) {
        for (final Orientation orientation : Orientation.values()) {
            final Range range = this.indexRanges[orientation.ordinal()];
            db.getContext()
                    .bindValue(SWTObservables.observeText(this.indexControls[orientation.ordinal()], SWT.Modify),
                            this.indexValues[orientation.ordinal()],
                            new UpdateValueStrategy()
                                    .setAfterGetValidator(
                                            new LongValidator((range.start + 1), range.end,
                                                    "Invalid " + getLabel(orientation) + " index ("
                                                            + (range.start + 1) + "\u2013" + range.end + ").")),
                            null);
            this.indexControls[orientation.ordinal()].selectAll();
        }
    }

    protected String getLabel(final Orientation orientation) {
        return (orientation == HORIZONTAL) ? "column" : "row";
    }

    public void set(final Orientation orientation, final long index) {
        if (this.indexRanges[orientation.ordinal()].contains(index)) {
            this.indexValues[orientation.ordinal()].setValue(Long.valueOf(index + 1));
        }
    }

    public long get(final Orientation orientation) {
        return ((Long) this.indexValues[orientation.ordinal()].getValue()).longValue() - 1;
    }

}