org.ganoro.phing.ui.internal.preferences.AddPropertyDialog.java Source code

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Here is the source code for org.ganoro.phing.ui.internal.preferences.AddPropertyDialog.java

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/*******************************************************************************
 * Copyright (c) 2000, 2008 IBM Corporation 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:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.ganoro.phing.ui.internal.preferences;

import org.eclipse.debug.ui.StringVariableSelectionDialog;
import org.eclipse.jface.dialogs.Dialog;
import org.eclipse.jface.dialogs.IDialogConstants;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.ModifyEvent;
import org.eclipse.swt.events.ModifyListener;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Button;
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;

public class AddPropertyDialog extends Dialog {

    private String fName;
    private String fValue;

    private String fTitle;

    private Label fNameLabel;
    private Text fNameText;
    private Label fValueLabel;
    private Text fValueText;

    private String[] fInitialValues;

    public AddPropertyDialog(Shell shell, String title, String[] initialValues) {
        super(shell);
        fTitle = title;
        fInitialValues = initialValues;
    }

    /* (non-Javadoc)
     * @see org.eclipse.jface.dialogs.Dialog#createDialogArea(org.eclipse.swt.widgets.Composite)
     */
    protected Control createDialogArea(Composite parent) {
        Composite comp = (Composite) super.createDialogArea(parent);
        ((GridLayout) comp.getLayout()).numColumns = 2;

        fNameLabel = new Label(comp, SWT.NONE);
        fNameLabel.setText(AntPreferencesMessages.AddPropertyDialog__Name__1);
        fNameLabel.setFont(comp.getFont());

        fNameText = new Text(comp, SWT.BORDER | SWT.SINGLE);
        fNameText.setText(fInitialValues[0]);
        GridData gd = new GridData(GridData.FILL_HORIZONTAL);
        gd.widthHint = 300;
        fNameText.setLayoutData(gd);
        fNameText.setFont(comp.getFont());
        fNameText.addModifyListener(new ModifyListener() {
            public void modifyText(ModifyEvent e) {
                updateButtons();
            }
        });

        fValueLabel = new Label(comp, SWT.NONE);
        fValueLabel.setText(AntPreferencesMessages.AddPropertyDialog__Value__2);
        fValueLabel.setFont(comp.getFont());

        fValueText = new Text(comp, SWT.BORDER | SWT.SINGLE);
        fValueText.setText(fInitialValues[1]);
        gd = new GridData(GridData.FILL_HORIZONTAL);
        gd.widthHint = 300;
        fValueText.setLayoutData(gd);
        fValueText.setFont(comp.getFont());
        fValueText.addModifyListener(new ModifyListener() {
            public void modifyText(ModifyEvent e) {
                updateButtons();
            }
        });

        Button variablesButton = new Button(comp, SWT.PUSH);
        variablesButton.setText(AntPreferencesMessages.AddPropertyDialog_2);
        gd = new GridData(GridData.HORIZONTAL_ALIGN_END);
        gd.horizontalSpan = 2;
        int widthHint = convertHorizontalDLUsToPixels(IDialogConstants.BUTTON_WIDTH);
        gd.widthHint = Math.max(widthHint, variablesButton.computeSize(SWT.DEFAULT, SWT.DEFAULT, true).x);
        variablesButton.setLayoutData(gd);
        variablesButton.setFont(comp.getFont());

        variablesButton.addSelectionListener(new SelectionAdapter() {
            public void widgetSelected(SelectionEvent se) {
                getVariable();
            }
        });

        return comp;
    }

    protected void getVariable() {
        StringVariableSelectionDialog variablesDialog = new StringVariableSelectionDialog(getShell());
        int returnCode = variablesDialog.open();
        if (returnCode == IDialogConstants.OK_ID) {
            String variable = variablesDialog.getVariableExpression();
            if (variable != null) {
                fValueText.insert(variable.trim());
            }
        }
    }

    /**
     * Return the name/value pair entered in this dialog.  If the cancel button was hit,
     * both will be <code>null</code>.
     */
    public String[] getNameValuePair() {
        return new String[] { fName, fValue };
    }

    /* (non-Javadoc)
     * @see org.eclipse.jface.dialogs.Dialog#buttonPressed(int)
     */
    protected void buttonPressed(int buttonId) {
        if (buttonId == IDialogConstants.OK_ID) {
            //https://bugs.eclipse.org/bugs/show_bug.cgi?id=248316
            fName = fNameText.getText().trim();
            fValue = fValueText.getText().trim();
        } else {
            fName = null;
            fValue = null;
        }
        super.buttonPressed(buttonId);
    }

    /* (non-Javadoc)
     * @see org.eclipse.jface.window.Window#configureShell(org.eclipse.swt.widgets.Shell)
     */
    protected void configureShell(Shell shell) {
        super.configureShell(shell);
        if (fTitle != null) {
            shell.setText(fTitle);
        }
    }

    /**
     * Enable the OK button if valid input
     */
    protected void updateButtons() {
        String name = fNameText.getText().trim();
        String value = fValueText.getText().trim();
        getButton(IDialogConstants.OK_ID).setEnabled((name.length() > 0) && (value.length() > 0));
    }

    /**
     * Enable the buttons on creation.
     * @see org.eclipse.jface.window.Window#create()
     */
    public void create() {
        super.create();
        updateButtons();
    }
}