com.appnativa.studio.dialogs.SplitPaneEditor.java Source code

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Here is the source code for com.appnativa.studio.dialogs.SplitPaneEditor.java

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/*
 * @(#)SplitPaneEditor.java
 *
 * Copyright (c) appNativa. All rights reserved.
 *
 * Use is subject to license terms.
 */

package com.appnativa.studio.dialogs;

import com.appnativa.studio.Studio;

import org.eclipse.jface.dialogs.Dialog;
import org.eclipse.jface.dialogs.IDialogConstants;
import org.eclipse.swt.SWT;
import org.eclipse.swt.custom.SashForm;
import org.eclipse.swt.events.ControlEvent;
import org.eclipse.swt.events.ControlListener;
import org.eclipse.swt.graphics.Point;
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.Shell;
import org.eclipse.swt.widgets.Text;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;

public class SplitPaneEditor extends Dialog implements ControlListener {
    float splits[];
    private Label lblSplits;
    private SashForm sashForm;

    /**
     * Create the dialog.
     * @param parentShell
     */
    public SplitPaneEditor(Shell parentShell, float[] splits) {
        super(parentShell);
        this.splits = splits;
    }

    @Override
    public void controlMoved(ControlEvent e) {
    }

    @Override
    public void controlResized(ControlEvent e) {
        calculateSplits();
    }

    public float[] getSplits() {
        return splits;
    }

    protected void calculateSplits() {
        int[] w = sashForm.getWeights();
        float[] s = new float[w.length - 1];

        for (int i = 0; i < w.length - 1; i++) {
            s[i] = (float) w[i] / 1000;
            s[i] = Math.round(s[i] * 100f) / 100f;
        }

        StringBuilder sb = new StringBuilder();

        sb.append(s[0]);

        for (int i = 1; i < s.length; i++) {
            sb.append(",");
            sb.append(s[i]);
        }

        splits = s;
        lblSplits.setText(sb.toString());
    }

    /**
     * Create contents of the button bar.
     * @param parent
     */
    @Override
    protected void createButtonsForButtonBar(Composite parent) {
        createButton(parent, IDialogConstants.OK_ID, IDialogConstants.OK_LABEL, true);
        createButton(parent, IDialogConstants.CANCEL_ID, IDialogConstants.CANCEL_LABEL, false);
    }

    protected void createChildren(float[] splits) {
        this.splits = splits;

        int weights[] = new int[splits.length + 1];
        int total = 1000;
        Text l;

        for (int i = 0; i < splits.length; i++) {
            float n = splits[i];
            int w = (int) Math.floor(n * 1000);

            weights[i] = w;
            total -= w;
            l = new Text(sashForm, SWT.BORDER | SWT.READ_ONLY);
            l.addControlListener(this);
            ;
        }

        l = new Text(sashForm, SWT.BORDER | SWT.READ_ONLY);
        l.addControlListener(this);
        ;
        weights[splits.length] = total;
        sashForm.setWeights(weights);
    }

    /**
     * Create contents of the dialog.
     * @param parent
     */
    @Override
    protected Control createDialogArea(Composite parent) {
        Composite container = (Composite) super.createDialogArea(parent);
        Label lblAdjustTheSplit = new Label(container, SWT.NONE);

        lblAdjustTheSplit.setText(Studio.getResourceAsString("Studio.text.design.adjust_split"));
        sashForm = new SashForm(container, SWT.NONE);
        sashForm.setSashWidth(5);
        sashForm.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true, 1, 1));
        createChildren(splits);

        Composite composite = new Composite(container, SWT.NONE);
        composite.setLayout(new GridLayout(2, false));
        composite.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, false, 1, 1));
        lblSplits = new Label(composite, SWT.NONE);
        lblSplits.setAlignment(SWT.CENTER);
        lblSplits.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, false, 1, 1));

        Button btnNewButton = new Button(composite, SWT.NONE);
        btnNewButton.addSelectionListener(new SelectionAdapter() {
            @Override
            public void widgetSelected(SelectionEvent e) {
                int[] w = sashForm.getWeights();
                int s = (int) Math.floor(1000 / w.length);
                for (int i = 0; i < w.length; i++) {
                    w[i] = s;
                }
                sashForm.setWeights(w);
                calculateSplits();
            }
        });
        btnNewButton.setText("Split Evenly");

        Label label = new Label(container, SWT.SEPARATOR | SWT.HORIZONTAL);

        label.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, false, false, 1, 1));

        return container;
    }

    /**
     * Return the initial size of the dialog.
     */
    @Override
    protected Point getInitialSize() {
        return new Point(450, 300);
    }
}