root/branches/0.2/controlexample/progressbartab.d

/*******************************************************************************
 * Copyright (c) 2000, 2003 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials 
 * are made available under the terms of the Common Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/cpl-v10.html
 * 
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
module controlexample.progressbartab;

private {
import swt.all;
import controlexample.tab;
import controlexample.rangetab;
import controlexample.controlexample;
}


class ProgressBarTab : RangeTab {
    /* Example widgets and groups that contain them */
    ProgressBar progressBar1;
    Group progressBarGroup;

    /* Style widgets added to the "Style" group */
    Button smoothButton;
    Button indeterminateButton;

    /**
     * Creates the Tab within a given instance_ren of ControlExample.
     */
    this(ControlExample instance_ren) {
        super(instance_ren);
    }

    /**
     * Creates the "Example" group.
     */
    void createExampleGroup() {
        super.createExampleGroup ();

        /* Create a group for the progress bar */
        progressBarGroup = new Group (exampleGroup, SWT.NONE);
        progressBarGroup.setLayout (new GridLayout ());
        progressBarGroup.setLayoutData (new GridData (GridData.GRAB_HORIZONTAL | GridData.HORIZONTAL_ALIGN_FILL | GridData.VERTICAL_ALIGN_FILL));
        progressBarGroup.setText ("ProgressBar");
    }

    /**
     * Creates the "Example" widgets.
     */
    void createExampleWidgets () {

        /* Compute the widget style */
        int style = getDefaultStyle();
        if (horizontalButton.getSelection ()) style |= SWT.HORIZONTAL;
        if (verticalButton.getSelection ()) style |= SWT.VERTICAL;
        if (smoothButton.getSelection ()) style |= SWT.SMOOTH;
        if (borderButton.getSelection ()) style |= SWT.BORDER;
        if (indeterminateButton.getSelection ()) style |= SWT.INDETERMINATE;

        /* Create the example widgets */
        progressBar1 = new ProgressBar (progressBarGroup, style);
        progressBar1.setMaximum (100);
        progressBar1.setSelection (50);
    }

    /**
     * Creates the "Style" group.
     */
    void createStyleGroup () {
        super.createStyleGroup ();

        /* Create the extra widgets */
        smoothButton = new Button (styleGroup, SWT.CHECK);
        smoothButton.setText ("SWT.SMOOTH");
        indeterminateButton = new Button (styleGroup, SWT.CHECK);
        indeterminateButton.setText ("SWT.INDETERMINATE");
    }

    /**
     * Gets the "Example" widget children.
     */
    Control [] getExampleWidgets () {
        Control[] controls;
        controls ~= progressBar1;
        return controls;
    }

    /**
     * Gets the text for the tab folder item.
     */
    String getTabText () {
        return "ProgressBar";
    }

    /**
     * Sets the state of the "Example" widgets.
     */
    void setExampleWidgetState () {
        super.setExampleWidgetState ();
        if (indeterminateButton.getSelection ()) {
            selectionScale.setEnabled (false);
            minimumScale.setEnabled (false);
            maximumScale.setEnabled (false);
        } else {
            selectionScale.setEnabled (true);
            minimumScale.setEnabled (true);
            maximumScale.setEnabled (true);
        }
        maximumScale.setMaximum (progressBar1.getMaximum ());
        smoothButton.setSelection ((progressBar1.getStyle () & SWT.SMOOTH) != 0);
        indeterminateButton.setSelection ((progressBar1.getStyle () & SWT.INDETERMINATE) != 0);
    }

    /**
     * Sets the maximum of the "Example" widgets.
     */
    void setWidgetMaximum () {
        progressBar1.setMaximum (maximumScale.getSelection ());
        updateScales ();
    }

    /**
     * Sets the minimim of the "Example" widgets.
     */
    void setWidgetMinimum () {
        progressBar1.setMinimum (minimumScale.getSelection ());
        updateScales ();
    }

    /**
     * Sets the selection of the "Example" widgets.
     */
    void setWidgetSelection () {
        progressBar1.setSelection (selectionScale.getSelection ());
        updateScales ();
    }

    /**
     * Update the scale widgets to reflect the actual value set 
     * on the "Example" widget.
     */
    void updateScales () {
        minimumScale.setSelection (progressBar1.getMinimum ());
        selectionScale.setSelection (progressBar1.getSelection ());
        maximumScale.setSelection (progressBar1.getMaximum ());
    }
}